Computer-based instrumentation

FIELD: instrumentation engineering; serviceability check of multichannel communication systems.

SUBSTANCE: proposed equipment includes personal computer, multiplexing switch, circuit checkup unit, control unit, multichannel comparison unit, virtual standard, switching unit, output signal shaper, multiplexer, and normalizing unit that has voltage meter and circuit meter.

EFFECT: enlarged functional capabilities of device.

3 cl, 1 dwg

 

The proposed invention relates to the field controlno and test equipment and can be used to test multi-channel communication systems.

It is known, is selected as the closest analogue, the centralized control device containing a multi-line block of comparison and United with him the virtual pattern and the block normalization, the input of which is connected to the outputs of the controlled object (Pat. Of the Russian Federation No. 2141722, CL IPC H 04 3/46, publ. 20.11.99, bull. No. 32).

The disadvantage of this device is that it does not impact on the controlled object channels simulated using the virtual reference.

The technical objective of the proposed invention is to expand the functional capabilities of the device.

This object is achieved in that in the automated test equipment containing multi-block comparison, United with him the virtual pattern and the block normalization introduced connected with its inputs to the outputs of the controlled circuits, multiplexer, switch, connected by their inputs to the outputs of the multiplexer, and outputs to the inputs of the block normalization, the shaper output signals are connected by their outputs to the inputs of controllable circuits and input of the multiplexer, the control unit, the connection is hydrated with multi-unit comparison virtual standard switch and driver output signals connected to the control unit switch channels and cause the connected PC, and the control unit, multi-unit comparison, virtual reference, block normalization, multiplexer, switch, and the driver output signals are combined in the control unit circuits; in addition, it switch channels connected to at least three blocks of the control circuits; however, the block normalization is made in the form of a voltage meter and meter circuit, whose inputs are connected to outputs of the switch, and outputs - inputs multi-Comparer.

The proposed invention is explained using the flowchart shown in the drawing, where the following notation:

- PC 1,

switch 2 channels

- unit 3 control circuits

unit 4 management,

- multi-unit 5 comparison

virtual reference 6,

switch 7,

driver 8 output signals,

the multiplexer 9,

unit 10 normalization

the meter 11 voltage (ADC)

- measures 12 circuit (ADC).

Automated test equipment is as follows.

Before conducting inspections circuits multichannel communication systems operator on the PC 1 selects a program corresponding to a specific mode of the test. After running the program, check the PC 1 through the switch 2 channels transmitting unit 3 control circuits for the unit 4 control command set for checking circuits. Unit 4 control sorts the received command, and sends them to the virtual reference 6 and the imaging unit 8 output signals.

Virtual reference 6 on the basis of the received command generates and transmits a multi-line block 5 comparison signals, the magnitude of the voltage corresponding to the signals of the controlled circuits in digital form during their normal operation.

Driver 8 generates output signals on their outputs and passes on the chain of the controlled object pulse and analog signals, the magnitude of the voltage corresponding to the pulse and analog signals interacting with the circuits of the controlled object. The same signals from the imaging unit 8 transmits output signals to the multiplexer 9 and then through the switch 7 to the inputs of the block 10 normalization in accordance with the commands of the control unit 4. Unit 10 the normalization converts the received pulse and analog signals to digital and sends them to a multi-line block 5 compare, where they are compared with the signals that should be generated at the outputs of the driver 8 output signals in accordance with a given program verification. The results of the comparison are passed on the command BC is ka 4 control through the switch 2 channels on the PC 1. Thus, the PC 1 performs the operation control of the imaging unit 8 output signals. In case of unacceptable deviations of the signals generated by the imaging unit 8 output signals from signals that should be generated, the PC 1 transmits to the control unit 4 a command to terminate the operation of the imaging unit 8 output signals.

Then, the multiplexer 9 receives at its inputs the signals from the controlled circuits and transmits them via the switch 7 to the inputs of the block 10 normalization in accordance with the commands of the control unit 4.

Unit 10 the normalization converts the received pulse and analog signals to digital and sends them to a multi-line block 5 compare, where they are compared with the signals from the virtual reference 6 in real time. Unit 10 the normalization includes meter 11 voltage, determining and converting into digital form the voltage coming from the circuits of the controlled object, and the measuring circuit 12, the incoming signals defining features or no break in one way or another circuit, and converts this information into a digital code. The results of the processing of signals from unit 10 normalization method comparison with signals received from the virtual reference 6, are transmitted multi-channel unit 5 compare to the PC 1 using the unit the 4 control through the switch channel 2. On the basis of the results of the signal processing personal computer 1 decides on the validity of the controlled circuits.

Thus, due to the fact that the automated test equipment introduced the PC, the control unit, multi-unit comparison, virtual reference, block normalization, multiplexer, switch, and the driver output signals are combined in the block control circuits, functional possibilities of the device.

1. Automated test equipment containing multi-block comparison, United with him the virtual pattern and the block normalization, characterized in that it introduced connected with its inputs to the outputs of the controlled circuits, multiplexer, switch, connected by their inputs to the outputs of the multiplexer, and outputs to the inputs of the block normalization, the shaper output signals are connected by their outputs to the inputs of controllable circuits and input of the multiplexer, a control unit connected to the multi-unit comparison, a virtual standard switch and driver output signals connected to the control unit switch channels and cause the connected PC, the block management, multi-unit comparison, virtual reference, block normalization, multiplexer, switch, and forms Novatel output signals are combined in the block control circuits.

2. Automated test equipment according to claim 1, characterized in that it switch channels connected to at least three blocks of the control circuits.

3. Automated test equipment according to claim 1, characterized in that the block in its normalization is made in the form of a voltage meter and meter circuit, whose inputs are connected to outputs of the switch, and outputs to the multichannel inputs of the Comparer.



 

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