Automated control and diagnostic complex (variants)

FIELD: automated control and diagnostics systems.

SUBSTANCE: first variant of complex includes control computer, mating block, commutator, local data exchange main, tests forming block, logical analyzer, signature analyzer, synchronization block, digital oscillographs block, special form signals programmed generators block, programmed power-sources block. Second variant of complex additionally includes block for forming high-frequency test signals and block for measuring high-frequency signals.

EFFECT: broader functional capabilities, higher efficiency, higher reliability.

2 cl, 2 dwg

 

The invention relates to automated control and diagnostics of electronic equipment complex objects, which include replaceable functional units.

The complex can be used at different stages of the life cycle of complex objects from development replaceable functional units to maintenance and repair of complex objects in the course of their operation.

The known device for the automated control of electronic equipment used for quality control of electronic equipment according to the principle of “good - bad”.

Known devices contain sources stimulating effects (test signal), the device control signal response (a measure of output parameters) and the computer.

Examples include devices for the automated control of electronic products on ABT. mon. The USSR №1383306, patent RU No. 2106677, patent RU No. 2150730, 2157559.

A disadvantage of the known control devices is their limited functionality, not allowing accurate diagnosis of a malfunction in the composition of the controlled electronic equipment.

Known automated control system according to patent RU NO. 2015622 (N 04 17/00)containing the switch, the Converter analogue-code, two block matching, a buffer sapom the kăđẫa block, the parallel Converter code serial decoder, the block of electronic keys, computers, block I / o, synchronization unit, interface unit, two optical receiving transmitter, fiber-optic communication line, a personal computer (PC), interface unit, local highway interchange, General highway interchange highway interchange multiplexor channel Manchester-2”, the control object.

The disadvantages of this automated monitoring system are:

the redundancy and complexity of implementing control replaceable functional units of electronic equipment;

the inability to achieve an accurate diagnosis of faults replaceable functional units.

Closest to the invention from the prior art is an invention by the author. mon. The USSR №1513418 “Device to control the parameters of 1988, a G 05, 23/02, containing a block of output data, the control computing machine, terminal, block register addresses, two switches, power management modes, the synchronization unit, the register input unit comparison, the analyzer block, the register output information block of the stimulating signals, and flow transducers, input-output UVM connected to the unit output terminal, outputs the synchronization unit is connected to the clock inputs of registers, the block of the control modes, the analyzer block, block the stimulating signals, the output of which is connected with the corresponding input of the switch.

The disadvantages of this device are: redundancy patterns and the complexity of the control replaceable functional units of electronic equipment, the inability to achieve an accurate diagnosis of faults replaceable functional units, the lack of reliability control analog-to-digital and digital to analog circuits.

The technical result from the use of the invention is:

the possibility of creation on the basis of the claimed complex compact workstations for control, fault diagnosis and repair of a wide range of replaceable functional units (including in terms of mobile repair shops);

ensuring higher precision quality control of a wide range of interchangeable functional modules REA, contain digital, analog to digital and digital to analog circuits;

providing deep diagnose the problem replaceable functional units REA (with depth of the detected fault to a particular failed active schema element).

This technical result is achieved by the fact that automated control and diagnostics, including the block sync the organization, the forming unit tests, interface unit and the host computer, interface unit installed in a free slot highway system control computer, switch, group o and group inputs which are respectively the group of outputs and inputs automated system monitoring and diagnostics for connection to a control object, a first output forming unit tests connected to the first input switch, the first output of the synchronization unit is connected to the clock input of the shaping unit tests, characterized in that it further comprises logic analyzer, signature analyzer, the block of digital oscilloscopes, block programmable power supply, the unit is programmable signal generators and local highway data exchange through which the connection unit is connected to the forming unit tests, logic analyzer, signature analyzer, a block of digital oscilloscopes, the synchronization unit, the block of the programmable power supply unit programmable signal generators special form, switch, second, third, fourth and fifth outputs of the synchronization unit is connected to the clock inputs, respectively, signature analyzer, a block of digital oscilloscopes, logic analisado the a and block programmable power sources, the first output of which is connected to the second input of the switch, the third input of which is connected to the output of block programmable signal generators special form, the output switch connected to the first input of the logic analyzer, the second input of which the input signature analyzer and block digital oscilloscopes are the corresponding inputs of the automated system monitoring and diagnostics for connection to a control object, the outputs of the shaping unit tests and unit programmable power sources are the corresponding outputs of the automated system monitoring and diagnostics, for connection to a control object, and the information output from the control computer is an information output of the complex.

This automated control and diagnostics is intended, as all known from the prior art, for control and diagnostics of digital, digital-analog and analog-to-digital circuit equipment inspection object.

In practice, however, there is a need for control and diagnostics of objects containing not only digital, digital-analog, analog-to-digital and RF circuit. To solve this problem is a variant of the automated system is shown in figure 2.

The technical result from the use of this waveguide is automated complex control and diagnostics is to achieve a technical result from the use of the first version of an automated system for monitoring and diagnosis is provided, and the expansion of the scope of the complex due to the possibility of control and diagnostics of the high-frequency parts of the test object.

This technical result is achieved by the fact that automated control and diagnostics, including the synchronization unit, forming unit tests, interface unit and the host computer, interface unit installed in a free slot of the highway system of the computer, switch, group o and group inputs which are respectively the group of outputs and inputs automated system monitoring and diagnostics for connection to a control object, a first output forming unit tests connected to the first input switch, the first output of the synchronization unit is connected to the clock input of the shaping unit tests, characterized in that it further comprises logic analyzer, signature analyzer, the digital block oscilloscopes, block programmable power supply, the unit is programmable signal generators special form, the power generation of high frequency test signals, the unit of measurement of parameters of high-frequency signals and the local highway interchange, through which the connection unit is connected to the forming unit tests, logic analyzer, signature analyzer unit digital OSCE is lograto, the synchronization unit, the block of the programmable power supply unit programmable signal generators special form, the switch block formation of the high-frequency test signals and the unit of measurement of parameters of high-frequency signals, the second, third, fourth and fifth outputs of the synchronization unit is connected to the clock inputs, respectively, signature analyzer, a block of digital oscilloscopes, logic analyzer and block programmable power sources, the first output of which is connected to the second input of the switch, the third input of which is connected to the output of block programmable signal generators special form, the output switch connected to the first input of the logic analyzer, the second input of which the input signature analyzer, digital block oscilloscopes and unit of measurement of parameters of high-frequency signals are the respective inputs of the automated system monitoring and diagnostics for connection to a control object, the outputs of the shaping unit tests, unit programmable power sources and power generation of high frequency test signals are the respective outputs of the automated system monitoring and diagnostics for connection to a control object.

Figures 1 and 2 image is the awives options automated system control and diagnostics.

They include the switch 1, the control computer 2 connected to the inputs and outputs with unit 3 pair set out on a free slot on the system line control computer 1, block 3 mates through the local highway 4 interchange is connected to the unit 5 forming tests, logic analyzer 6, the signature analyzer 7, block 8 digital oscilloscopes, block 9 programmable power supply unit 10 programmable signal generators special form, block 11 synchronization, which outputs are connected to the clock inputs of the block 8 oscilloscopes, signature analyzer 7, logic analyzer 6, unit 5 generation tests unit 10 programmable signal generators special form, the output of switch 1 is connected to the input of the logic analyzer 6 and the inputs of the switch 1 are connected respectively to the outputs of block 5 formation tests, unit 9 programmable power source and the unit 10 programmable signal generators of a special form.

The complex shown in figure 2, includes a block 12 forming the high-frequency signals and the block 13 measurement of parameters of high-frequency signals. Both figures depict the object 14 control and its connection to the blocks automated system.

Group o and group the and inputs of the switch 1 is the corresponding group of outputs and inputs of the system for connection to the test object, separate inputs of which are connected to the outputs of block 5 formation tests, unit 9 programmable power supplies and (2) block 12 forming a high-frequency test signals, which are the corresponding outputs of automated system control and diagnostics. The input signature analyzer 7, block 8 digital oscilloscopes and block 13 measurement of parameters of high-frequency signals are the respective inputs of the automated system monitoring and diagnostics for connection to respective outputs of the control object. Block 12 forming a high-frequency test signals and the block 13 measurement of parameters of high-frequency signals through the local highway 4 interchange is connected to the connection unit, and inputs the synchronization of these blocks are connected with the corresponding outputs of the synchronization unit 11.

Automated control and diagnostics has several modes of operation, including:

1) programming mode tests;

2) control mode REA;

3) mode of failure diagnosis REA;

4) mode built-in health monitoring of complex.

When in programming mode tests on the basis of a priori information about the objects of control and diagnostics, and in accordance with specifications on controlled instruments which is formed a set of test signals. Each set of test signals corresponds to a set of reference signals at the outputs of control objects (in the technique of automated control called the response signals supplied on the tests). Data about the reference values of the parameters sets of test signals and parameters of the corresponding reference signals of the response is recorded in the database of the computer 2. Further, controlling for the corresponding objects control tests before control enters the block 5 formation tests. Then they in turn (according to the clock signals from the block 11 synchronization) is extracted from the buffer memory unit 5 forming tests, given to the object 14 controls and the parameters of the response signals (obtained using blocks 6, 7, 8) are compared with reference values previously listed in the database of the computer 2 when programming tests. If the deviations of the measured parameters from the reference are within the specified tolerances, the test object 14 is considered suitable. When the deviation of the measured parameters outside the tolerances of the test object 14 is recognized is faulty and fault diagnosis.

The complex provides two options for the implementation of the programming mode tests:

1) based on the analysis of schema objects of control and analysis of the signals in the circuit (considered the above);

2) on the basis of the reference objects of the control.

When in programming mode tests on the basis of the reference object reference object control (known good and with parameters that are in the middle of the field tolerances) connects the complex. On the basis of technical specifications parameters test (stimulating) signals and the sequence of their submission. Next, a step behind a step is applying to the object of control tests with the given parameters and for each set of tests is the measurement of the response signals from the outputs of the control object. The measured values of the response signals are recorded in a database as a reference and used to monitor the health of control objects of the given type.

After obtaining the reference of the response signals to monitor the health replaceable functional units in a similar way is automated preparation of the response signals for fault diagnosis. To this end (after the formation of the reference signals in response to control health discussed above) in the schema of the reference object control in turn mimic the most likely fault. After the introduction of each type of defect on the inspection object 14 serves input benchmarks, by means of which ontrol (logic analyzer 6, signature analyzer 7, the digital oscilloscope 8)forming part of the complex, measured parameters of the reference response signals as output from the test object, and an intermediate point (point of the injected faults). The resulting set of reference parameters of the response signals identify (logically belong) entered by the type of fault and entered into the computer database. Further, when the coincidence signal response from the monitored faulty inspection object with a corresponding set of reference signals of the response (for a particular type of fault) complex will automatically identify (recognize) faults, and provides information about the type of fault and the fault in the circuit of the controlled object.

In control mode, the system operates as follows. Before control is another object 14 control is connected to the switch 1 and to other component parts of the complex in accordance with scheme 1, 2. On the host computer 2 sets the object type of the control. On the basis of the specified type code of the test object from the database, the computer retrieves the control program, including benchmarks that are written in the buffer memory block 5 development of digital tests. Issuance of test signals is performed by teams of upravlyayushchaiya 2 complex, which also manages the installation of signal parameters of a special form (to control analog and analog-to-digital circuits and high-frequency signals (to control objects with high-frequency part). The whole control process is performed in stages (steps), and the synchronization of sources of supply test signals (block 5 formation tests, unit 10 signal generator special form of block 12 forming a high-frequency signal) and measuring the response signals (logic analyzer 6, the signature analyzer 7, block 8 digital oscilloscopes, block 13 measurement of parameters of high-frequency signals) is provided by applying a clock signal of a given frequency from the programmable unit 11 synchronization, and the control sequence of the issuance of the test signals, measurement of the response signals and comparing them with a reference is made under the program under computer control 2 complex. In each step of collectively supplied to the control object reference test signals (logic and analog) receive a combination of measured parameters of the response signals, which are compared to reference values of the response signals for a given quantum. The result of the comparison (for a given field tolerance) is fixed in the memory of the host computer 2 and switched the PC on to the next cycle. After completion of the entire cycle of the control computer 2 analyzes the results of the comparison reference signal response and the measured response signals for each measure. When the measured signals within the tolerance of objects 14 are considered valid, and the computer 2 displays a message about the positive results of the control.

When the parameters measured signals for field access computer 2 generates a fault report of this inspection object 14 and the need for Troubleshooting.

Mode Troubleshooting complex works as follows. On computer 2 sets the type of the object being diagnosed control 14 and from the database is retrieved diagnostic program, including a set of sequentially-issued diagnostic tests. In connection with the necessity of receiving the response signals from the intermediate points of the circuit of the inspection object 14, the diagnostic process is conducted in stages in interactive mode. At the first stage of the inspection object 14 serves diagnostic tests, allowing you to pre-locate faults in the scheme of the inspection object 14 (e.g., output stages of the circuit of the inspection object 14). After a preliminary localizing failure drill through the point of refusal. With this purpose, the diagnostic program, the computer 2 generates EC on the ane monitor instructions on connecting the probes signature analyzer 7 and the digital oscilloscope 8 at corresponding intermediate points in the circuit. Based on the analysis of parameters of signals received with a signature analyzer 7, logic analyzer 6 and the digital oscilloscope 8 computer identifies problems or issues clarification on a similar analysis of other portions of the electrical circuit inspection object 14. The process of measuring signals in the intermediate points of the inspection object 14 and the subsequent comparison with the corresponding parameters of the reference signals (retrieved from the database) for the same points continues until all the diagnostics are completed, the entire circuit of the inspection object 14.

The sequence view of the intermediate points of the circuit of the test object 14 is set when programming tests based on the characteristics of the circuit constructing the inspection object 14, and also taking into account the principle scheme of the inspection object 14.

Based on the results of diagnostic repair object control (elimination of detected errors), then re-inspected the repaired object control (replacement item REA) of the above. If the control is successful, the object of control is recognized as valid (refurbished). If you are installing the deviation from the reference characteristics, which means that an open fault, the object of control again passes diagnostics to identify the penalty is Anenii fault. The repair process and control ends when the object of control is recognized as valid.

Mode built-in health monitoring complex works as follows. The inspection object 14 in this case, the complex is not included, and inputs the measuring units of the complex digital oscilloscope 8, logic analyzer 6, the signature analyzer 7) switch 1 are alternately connected to the outputs of the blocks forming the stimulating effects (unit 5 forming tests, unit 10 signal generators special form of block 10 programmable power sources). The sequence of connection is defined by the program of integrated control complex by issuing appropriate instructions on the monitor host computer 2. At the command from the host computer 2, the corresponding blocks of the formation given the specified parameters of the test signals, which are controlled by the respective measuring units of the complex. The parameters of the measuring signals are compared with reference values previously entered in the computer database.

If the measured values of the parameters of the stimulating effects do not extend beyond the tolerances (which means the reliability of generating output signals, and on the reliability of the measurement parameters is quiet signals), the complex is considered to be fit for work. For the implementation of internal control, in addition to special software package, the complex is given an additional switch 1.

An integral part of automated system control and diagnostics are implementations of well-known technical solutions. Concrete circuit and constructive-technological implementation is determined by the current level of technology. In particular, the switch in the simplest case, can be implemented as a plug-in transition cards (adapters), one connector installed in the local highway interchange, and the second end having a connector for connection of control objects (replaceable functional units REA). Unit 9 programmable power sources is a set of regulated power supplies, the output voltage which is set by using part of them digital to analog converters on commands supplied from the host computer 2 via the local highway 4 interchange. Unit 11 synchronization (in the simplest case) is a chain of series-connected reference frequency generator, the programmable frequency divider and the output driver clock pulses. Logic analyzer 6 is (in the simplest case) a set of Comparators l is the logical “zero” and logic “unit” (for the appropriate number of bits) and the output register.

Signature analyzer 7 (in the simplest case) is a combination of the two Comparators (logical “zero” and logic “unit”) and a shift register, in which is formed a few cycles code “signatures”that shows the reaction scheme at the point of connection of the probe to the sequence of input test impacts. Digital oscilloscope 8 (in the simplest case) is a high-speed ADC, strobing clock pulses and an intermediate memory in which the beat with the beat of recorded codes of the signals measured at the reference point of the circuit (the connection point (ADC) in each moment of time defined by the clock.

Unit 3 pair represents (in the simplest case) a set of main amplifiers, providing coordination system bus of the computer 2 and the system bus complex (local highway interchange 4).

Unit 5 generation tests (in the simplest case) is connected in series with the output line of the amplifier-shaper, the intermediate register, memory storage tests and the corresponding control circuit (providing tact recording tests with line sharing, tact reading tests from the buffer memory and transferred to the control object).

Before you start monitoring and diagnostics the ISR database host computer in the memory unit 5 of the formation test is written codes of logical tests in the sequence they must be submitted to the inspection object 14 by program monitoring and diagnostics. When the program starts monitoring (diagnostics) at each step under the influence of clock pulses from block 11 synchronization of the memory unit 5 forming tests is extracted and stored in the intermediate register another test code. In accordance with the state of the bits of the intermediate register connected to the output of the respective bits of the register amplifiers-formers form on their outputs of parallel logic test (with the given parameters of the signal)which is transmitted to the test object 14.

The control computer 2 is a set of standard personal computer that includes a system unit with the process and RAM, monitor, disk subsystem drives, hard disk drives, floppy disks, CD-ROM, printer, keyboard, and pointing device type mouse. In the disk subsystem HDD organized database of tests and results database monitoring and diagnostics, as well as hosted software, which implements the algorithms of complex operation in all modes.

Thus, automated complex figure 1 and figure 2 is implemented on the basis of component parts, the principle of which is known from the existing level of technology is I.

In the composition of electronic equipment, subject to the control and diagnosis using automated complex than the digital, analog to digital and digital to analog circuits may include an RF circuit and the circuit. To ensure monitoring and diagnostics this equipment is designed variant of the complex (figure 2), further containing block 12 forming a high-frequency test signals and the block 13 measurement of parameters of high-frequency signals connected with other parts of the complex in accordance with the scheme of figure 2. As block 12 forming a high-frequency test signals may be used, for example, software-controlled frequency synthesizer appropriate range enabled at the output of the program-controlled attenuator. As units of measurement of parameters of high-frequency signals can be used, for example, software-controlled spectrum analyzers, measuring receivers and selective microvoltmeter corresponding frequency range digital output.

Thus, as can be seen from the structure of the automated system and describe its operation of the claimed technical result is achieved.

1. Automated monitoring and fault diagnosis of electronic equipment, including block synchro is Itachi, the forming unit tests, interface unit and a control computer connected inputs-outputs outputs-inputs of the connection unit, the connection unit is installed in a free slot highway system control computer, switch, group o and group inputs which are respectively the group of outputs and inputs automated system monitoring and diagnostics for connection to a control object, a first output forming unit tests connected to the first input switch, the first output of the synchronization unit is connected to the clock input of the shaping unit tests, characterized in that it further comprises logic analyzer, signature analyzer, the block of digital oscilloscopes, programmable block sources power supply unit programmable signal generators and local highway interchange, through which the connection unit is connected to the forming unit tests, logic analyzer, signature analyzer, a block of digital oscilloscopes, the synchronization unit, the block of the programmable power supply unit programmable signal generators special form, switch, second, third, fourth and fifth outputs of the synchronization unit is connected to the clock inputs, respectively, of the signal is to become analyzer, block digital oscilloscope, logic analyzer and block programmable power sources, the first output of which is connected to the second input of the switch, the third input of which is connected to the output of block programmable signal generators special form, the output switch connected to the first input of the logic analyzer, the second input of which the input signature analyzer and block digital oscilloscopes are the corresponding inputs of the automated system monitoring and diagnostics for connection to a control object, the outputs of the shaping unit tests and unit programmable power sources are the corresponding outputs of the automated system monitoring and diagnostics for connection to a control object, and information outputs a control computer outputs are complex, when this switch contains a group of inputs and outputs to connect the complex to the object of control, but also provides additional inputs, which are connected respectively to the outputs of the shaping unit tests, unit programmable power supply unit programmable signal generators special form contains separate output connected with the input of the logic analyzer for transmission from the output of the control object to the input logical the ski analyzer measured the response signals, when this switch is designed for implementation in complex operation mode built-in direct control of a serial connection of the inputs of the measuring units to the outputs of the blocks forming the respective stimulating effects on commands from a control computer, as well as for the implementation in complex operation modes of the control and diagnostics of the corresponding connection object control to the outputs of the sources stimulating effects and to the inputs of the logic analyzer control computer complex is intended for database storage and work programme of the complex, is retrieved from the database control program for a given type of object, including benchmarks, ensuring that all component parts of the complex for a given program, entry tests the buffer memory unit formation tests, control the issuance of test signals from the shaping unit tests, control setting signals special forms for control analog and analog-to-digital circuits, control the issuance of test signals, measurement of the response signals and comparing the response signals with the reference signals according to the program, commit the comparison result obtained in each step, analysis of the results of the comparison of reference signals and the response signals for each is about quantum generate messages about the positive results of the control, issue error message object control and the need for fault diagnosis, the issuance by the diagnostic program instructions for connecting probes signature analyzer, logic analyzer and digital oscilloscope at corresponding intermediate points of the schema identification based on the analysis of parameters of signals received with a signature analyzer, logic analyzer and digital oscilloscope fault and issue clarification on the analysis of other portions of the electric circuit of the control object, the control sequence of a serial connection of the inputs of the measuring blocks of complex digital oscilloscope, logic analyzer, signature analyzer) switch to the outputs of the blocks forming the stimulating influences (the forming unit tests, unit programmable generators special form of block programmable power sources) the built-in control, logic analyzer is supplied to the input set of Comparators logical zero and a logical unit and is designed to connect the input circuits to the outputs of the switch, and through the switch to the outputs of the control object, receiving, from the output of the control object through a switch on the input circuit is of Ignatov response the level of which may correspond to a value of logical zero or a logical unit, identification of the output signals of the response object control values zero or units entering these values into the corresponding bits of the output register logic analyzer, code generation response filed on object control input test work simultaneously with forming unit tests under the control of the synchronization unit.

2. Automated complex for diagnostics and Troubleshooting of electronic equipment that includes a synchronization unit, forming unit tests, interface unit and a control computer connected inputs and outputs with the outputs and inputs of the connection unit, the connection unit is installed on the free layer highway system control computer, switch, group o and group inputs which are respectively the group of outputs and inputs automated system monitoring and diagnostics for connection to a control object, a first output forming unit tests connected to the first input switch, the first output of the synchronization unit is connected to the clock input of the shaping unit tests, characterized in that further comprises logic analyzer, signature analyzer, the block of digital oscill the graph the unit is programmable power supply unit programmable signal generators special form, the power generation of high frequency test signals, the unit of measurement of parameters of high-frequency signals and the local highway interchange, through which the connection unit is connected to the forming unit tests, logic analyzer, signature analyzer, a block of digital oscilloscopes, the synchronization unit, the block of the programmable power supply unit programmable signal generators special form, the switch block formation of the high-frequency test signals and the unit of measurement of parameters of high-frequency signals, the second, third, fourth and fifth outputs of the synchronization unit is connected to the clock inputs, respectively, signature analyzer, a block of digital oscilloscopes, logic analyzer and block programmable power sources, the first output of which is connected to the second information to the switch input, the third input of which is connected to the output of block programmable signal generators special form, the output switch connected to the first input of the logic analyzer, the second input of which the input signature analyzer, a block of digital oscilloscopes and unit of measurement of parameters of high fre is now signals are the respective inputs of the automated system monitoring and diagnostics for connection to a control object, the outputs of the shaping unit tests, unit programmable power sources and power generation of high frequency test signals are the respective outputs of the automated system monitoring and diagnostics for connection to a control object, the inputs of the synchronization unit of measurement of parameters of high-frequency signals and block the formation of the high-frequency test signals are connected to respective inputs of the synchronization unit, and information outputs a control computer outputs are complex, and the switch contains a group of inputs and outputs to connect the complex to the object of control, but also provides additional inputs, which are connected respectively to the outputs of the shaping unit tests, unit programmable power supply unit programmable signal generators of the special form and block the formation of high-frequency signals, contains a separate output connected with the input of the logic analyzer for transmission from the output of the control object to the input logic analyzer measured the response signals, the switch is designed for implementation in complex operation mode built-in direct control of a serial connection of the inputs of the measuring units to the outputs of the blocks forming according to the respective stimulating effects on commands from a control computer, also for implementation in complex operation modes of the control and diagnostics of the corresponding connection object control to the outputs of the sources stimulating effects and to the inputs of the logic analyzer control computer complex is intended for database storage and work programme of the complex, is retrieved from the database control program for a given type of object, including benchmarks, ensuring that all component parts of the complex for a given program, entry tests in the buffer memory forming unit tests, control the issuance of test signals from the shaping unit tests, control setting signals special forms for control analog and analog-to-digital circuits, control installation parameters of high-frequency signals from the processing unit of high-frequency signals, control the issuance of test signals, measurement of the response signals and comparing the response signals with the reference signals according to the program, commit the comparison result obtained in each step, analysis of the results of the comparison of reference signals and the response signals for each clock cycle, the formation of messages about the positive results of the control, issue error message object control and the need for fault diagnosis, the issue of prog is the Amma diagnostic instructions on connecting rods, signature analyzer, logic and digital oscilloscope at corresponding intermediate points of the schema identification based on the analysis of parameters of signals received with a signature analyzer, logic analyzer and digital oscilloscope fault and issue clarification on the analysis of other portions of the electric circuit of the control object, the control sequence of a serial connection of the inputs of the measuring blocks of complex digital oscilloscope, logic analyzer, signature analyzer, meter parameters of high-frequency signals) switch to the outputs of the blocks forming the stimulating effects (forming unit tests, unit programmable generators special form of block programmable power sources, power generation of high frequency test signals) according to the program of internal control, logic analyzer equipped with input set of Comparators logical zero and a logical unit and is designed to connect the input circuits to the outputs of the switch, and through the switch to the outputs of the control object, receiving, from the output of the control object through a switch on the input circuit of the response signals, which may correspond to a value of logical zero or a logical unit, identification of the output signals of the response object is ontrol values either zero or one, entering these values into the corresponding bits of the output register logic analyzer, code generation response filed on object control input test work simultaneously with forming unit tests under the control of the synchronization unit.



 

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The invention relates to the field of measurement technology and can be used in systems of automated control and diagnostics of electronic objects

FIELD: automatic control, applicable in systems with excessive quality of transducers, for example, accelerometers, a failure of one of which should not result in a failure of the control system.

SUBSTANCE: the method is based on a periodic check-up of relation between the measured parameters of motion characterizing the correct operation of the transducers, fixation of the moment of failure of the relation, comparison of the readings of the transducers at this moment and at the moment preceding the moment of disturbance of the relation, and determination of the failed transducer by the results of the comparison.

EFFECT: expanded functional potentialities due to possibility of determination of the failed transducer in any excess system.

1 dwg

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