Control system parameters radios

 

(57) Abstract:

Control system parameters radios intended for use in the process of setting up and controlling for serial and mass production. The system contains a set of centralized generators CGS, the number of which is determined by the selected control methods. In the system frequency CGS shifted in frequency relative to the working frequency bands, and jobs contain at least one transfer unit of frequency, switch, and communication lines to generators CGS driven frequency generator, the device standardization of the signal level of the radio. The output of the radio device is connected analysis of the output signal, the indicating unit. Transfer spectra frequencies CGS in operating ranges of the radio is made by changing the frequency entered generator, and the introduction of advanced modulation generator allows you to quickly and independently at each workplace to change the modulation parameters entered generator and to modify the characteristics of the input signal to the radio. When the control parameters of superheterodyne receivers there is a link between the frequency of the local oscillator of the radio, and often the school technique and can be used to adjust and control the parameters of the radios and high-frequency blocks in serial and mass production of radio and television equipment.

Setting up radios and control parameters are manufactured using high-frequency test signals, spectral composition and levels are defined in the relevant standards and technical specifications for products. The choice of means and standard design non-standard measuring equipment are dependent on the scale of production. Currently, the most effective as performance, and the quality control parameters of the radios is equipment, which is implemented mnogorigelnyj method of control parameters. The control system incorporates a generator-synthesizer complex signal, "useful part" which automatically adjusts the frequency mid bandwidth of the radio, using information about the frequency of the local oscillator of the radio. Simultaneously to the input of the radio receiver receiving frequency of the additional signal-jamming with different modulation parameters and the corresponding shifts in frequency from the main signal. Analysis of the output signal of the receiver determine the parameters of linear and nonlinear selectivity, sensitivity, linear and nonlinear distortion.

The complexity of the generator portion of the system is not high enough specifications, defined in large part by a method of synthesis of complex signal synthesizer does not allow to effectively use this system on the radio manufacturing plants in the industry, often for economic reasons in the process of Assembly and adjustment of products requires a large number and variety of jobs with different technical characteristics of high-frequency test signal.

The closest analogue to the proposed technical solution is widely implemented at the enterprises of the system configuration and control parameters radios, containing in its structure centralized generators test signals, connected by communication lines with jobs of regulators and supervisors. The workplace provides switch signals CGS, the unit of analysis of the output signal of the receiver, a display and a control unit that organizes the work of the constituent parts of the workplace regulator. The frequency of the volume located within controlled channels and reception of the radio.

Such a control system when the relative simplicity of the hardware part of the workplace regulator has drawbacks. Here you have a large number of generators CGS, the number of which is determined by the number of controlled ranges, the number of control points in each range, the number of species and nominal modulation of these generators and the number of which is determined by control parameters radios relevant standards and technical specifications for the radio. Measurement parameters is possible only on the frequencies generated CGS, and tuning the receiver to signals CGS can only be made by the management bodies of the controlled radio. Because the system configuration generator CGS-radio" it is necessary, in terms of the measurement parameters such as frequency response through path, the harmonic distortion, the real sensitivity and others, to carry on the middle of the bandwidth of the radio, then, considering the possible imperfection of the controllers settings controlled radio, the exact configuration is difficult to implement fairly quickly, which increases the complexity of production. Another disadvantage of the system, hampering designed to help drivers is astate CGS lie within the operating frequency bands controlled radios.

The purpose of the invention to enhance the functionality of the system control parameters radios.

This objective is achieved in that the control system parameters radios, containing CGS connected line of communication with jobs controllers, each of which contains a radio receiver, the unit normalization of the input signal input through the communication line to the centralized signal generator, and the output to the input of the radio, the unit of analysis of the output signal of the radio connected to the output of the radio, the control unit, the Central frequency of the signal generator offset controlled channels and radio, and on the workplace of the regulator introduced at least one transfer unit frequency, is connected to the first input through the communication line to the centralized signal generator, the second input to output first entered controlled oscillator, the output of the transfer unit frequency through the regulation of the input signal of the radio receiver is connected to the input of the receiver, and the control input entered generator connected to the control unit.

The first input is entered blakeny switch, moreover, the control input of the switch is connected to the control device.

In addition, first introduced controllable oscillator may be included in ring PLL, and the control input of the first put of the generator is connected to the output of the introduced phase detector, the first input of which is connected to the local oscillator of a radio receiver, a second input connected to the output put of the second transfer unit frequency, the first input of which is connected to the output of the first put of the generator, and the second input to the output of the second entered generator.

The second introduced the generator may be common to all jobs, i.e. to be part of CGS.

The offset frequency CGS relatively controlled receiving channels of the radios, the introduction into the working space of the transfer unit of the frequency controlled oscillator, a frequency change which it has become possible to transfer spectra frequencies CGS (or range very first entered generator) any point or area of the working frequency range of the receiver, has expanded the functionality of the control system, because it allowed us to control parameters of the radio on any frequency settings.

Spectra of signals CGS can be placed n the channel to generate the input signal of the receiver, included in series with the device rating of the input signal of the receiver between the generator CGS and the receiver input can be performed using both one and, for example, multiple cascaded units transfer frequencies, each of which is connected to one of the inputs to its (first) generator, and to achieve the goal of the invention is sufficient that only one of these generators was managed, and the remaining (first) generators can serve as, for example, "coasters" to transfer spectrum generator CGS in the desired frequency region of the receiver. In the latter case, these, other, generators can be part of CGS.

In the simple case (for example, when performing a block transfer frequencies on a single balanced mixer with an appropriate filter at the output to eliminate unwanted spectral components of the results of multiplying the input radio frequency radio settings Ftowhere is the control parameters can be determined from the expression:

FtoFCGSF1, (1)

where FCGSthe carrier frequency generator CGS;

F1 is the carrier frequency of the first generator.

For Superga is R>FtoFgFFCFcm, (2)

where Fgthe frequency of the local oscillator of the receiver;

FFCintermediate frequency;

Fcmthe offset frequency from the carrier main receiving channel corresponding to the controlled (main, adjacent, mirror, additional and so on) the receive channel defined test methods and specifications for the receiver. In particular, for the main receive channel offset frequency Fcmzero for mirrored channel superheterodyne receiver Fcmequal to the largest 2FFCand so on

From expressions (1) and (2) that the frequency of the control channel receiver Ftoat a particular offset Fcmand the selected carrier frequency FCGSis determined by the value of the carrier frequency of the first generator, and the formation of a certain input signal of the receiver, characterized by the value of the carrier frequency, type and magnitude of the modulation is possible by selecting the appropriate carrier frequency FCGSwith a certain type and magnitude of the modulation, and the changing of the carrier frequency, the type and value of the modulation introduced the first generator connected to the transfer unit frequency CGS.

Except, maybe, the simplest variant is R with invariant in time parameters and spectrum shift generator CGS is controlled in the receiving channels of the receiver by means of the transfer unit frequency by changing the frequency of the first generator without the use of switch signals CGS, perhaps the formation of a qualitatively different input signals of the receiver by the change in time of the output parameters of CGS: carrier frequency, the type and amount of modulation. Information about the changes in time of the signal CGS can optionally enter the workplace on separate lines.

The presence of a switch included in the channel forming the input test signal receiver, between generators CGS and receiver input connected to the control device of the workplace allows independently, at each workplace, at any point in time to form at the receiver input high-frequency signal with the modulation parameters used in the generators CGS and, probably, in most cases, it is advisable for economic reasons, to design the proposed control system with the method of the modulation generators CGS and generate the test signal receiver in the workplace regulator transfer the selected switch of the spectrum of the generator CGS on the monitored channel receiving frequency change of the first generator, connected to the second input of the transfer unit of frequency.

The carrier frequency generators CGS modulated razlichnykh parameters of the same control channel receiver, can be the same or different from each other technically feasible values of the offset frequency. In the latter case, the spectrum shift generator CGS selected by the switch on the controlled channel reception can be a corresponding change in frequency of the first put of the generator, and the technical advantage here would be the elimination of a considerable extent of the problems associated with cross-passage signals CGS lines CGS with jobs, compared with the case where the carrier frequency generators CGS used to control various parameters (for example, the real sensitivity and uneven frequency response through path) of the same control channel receiver, not offset.

The proposed control system supports two-signal, and mnogorigelnyj methods of control parameters of the selectivity of the receiver. At the workplace is at least one transfer unit of frequency, the first input of which is connected through the introduction of a managed switch to one of the generators CGS generating a signal corresponding to the interference, and the second can be connected to the output of the first or entered generator, or the output is of the input signal of the receiver when implementing on the considered control system mnogogrannogo method of control selectivity. In one embodiment, the carrier frequencies used generators CGS to generate the input signal of the receiver is shifted by an arbitrary (technically feasible) distance according to frequency. In this case, the transfer of spectrum signals CGS for each of the channels used for the control of the receiver (for example, if you control two-signal selectivity adjacent signal in the two channels forming a test signal to the receiver generated signal for the main channel of reception and signal interference to adjacent channel) is made by setting a frequency of the first put of the generator in accordance with the expression (1) description and, hence, the number of first generators here will be equal to the number of the number of channels of the formation of the test signals. In another embodiment, it is possible to use generators CGS shifted by the carrier frequency at fixed values, standards, and monitoring parameters selectivity mnogogrannom method of control. In this case, can be used one first entered the generator, and the required number of generators CGS must at least be one more than the number of controlled selectively. The choice of frequencies CGS are introduced managed the Finance of the input test signal is possible as frequency modulation of the first put of the generator, and modulation generator CGS. In the latter case, the modulating generators CGS low-frequency signals, or information about that individual lines to enter the jobs of the regulator to ensure synchronization of the display device of the analyzing device used in panoramic method of monitoring parameters.

The drawing shows a structural system electrical circuitry of the control parameters of the receiver.

The control system contains CGS 1, workplace options 2, 3, 4, connected to the generator CGS 1 lines 5, and jobs 2 and 3 are connected to the generators CGS 1 through a managed switch 7. Each workstation contains a controlled receiver 6, a first transfer unit frequency 8, first introduced controlled oscillator 9, the unit normalization of the input signal of the receiver device 10 analysis of the output signal of the receiver 11, the control unit 12. Variant workplace 4 contains in addition, a phase detector 13, the second introduced the transfer unit frequency 14 and the second entered generator 15.

Control system parameters receiver operates as follows. In one embodiment of the organization system control Chinii connection 5 and a managed switch 7 is coming to jobs controllers 2 and 3. The workplace 4 the signal generator output CGS directly. Jobs 2 and 4 contain one channel generate the input signal of the receiver and the workplace 3 contains two channel formation and it implements a two-signal method of control. Each of the channels forming the input signal of the receiver workplace 2 and 3 is connected in series to the transfer unit frequency CHS 8 and device for regulation of the input signal of the receiver, and the first inputs of the blocks of the transfer frequency is connected through the switch 7 to the generator CGS 1, and output devices regulation input level 10 is connected to the input of the receiver. In the workplace 3 the signal at the receiver input comes from the output of device regulation through a summation device 16. The second input transfer unit frequency connected to the output of the first put of the generator 9, a control input connected to the control unit 12 of the workplace. Control signals from the control unit 12 receives the switch signal CHS 7 and device regulation input signals of the receiver 10.

The output signal of the receiver is fed to the unit of analysis 11. The unit of analysis is the processing and analysis of the output of the fir diagnose controlled parameters, to assess their level. The unit of analysis is also used to set the receiver in terms of measurement parameters, which correspond to the accepted methods of control, i.e., using equipment analysis device sets the output level of the receiver, setting the tone controls, balance, tuning into the middle of the bandwidth, etc. In a simple case, the unit of analysis may be a meter or simply the presence indicator signal at the output of the receiver. The communication unit of analysis 11 to the control unit 12 or to other blocks of the system may not exist or be exercised by the regulator, when the evaluation of output from the unit of analysis, the regulator makes a decision about changing the conditions of the measurement parameter using available (for example, via the control unit) blocks of the control system.

The control parameters of the receivers at the workplace 2 and 3 as follows. The traffic controller through the control unit 12 which communicate with the switch signals CHS 7, the generator 9, the device of the regulation of the input signal 10, sets the input signal of the receiver the desired spectral composition and level, and the selection of a particular signal CGO of the control channel reception) is performed by setting the frequency of the first put of the generator 9, setting the input level of the receiver control device for regulation of signal 10. Then install a receiver in the control conditions corresponding to the accepted method of control parameter, i.e., sets of controls receiver: controls output level, balance, bass & treble controls so you can use the unit of analysis. Next is the count value of the controlled parameter of the indicator unit of analysis 11 or assessed or registration option in response to the input test signal to the receiver.

When the control parameters of the superheterodyne receiver in the system for the purpose of automating the configuration of the receiver in the middle of the bandwidth as informative can be used, the frequency of the controlled oscillator of the receiver. In the structural diagram of the connection between the receiver 6 (the frequency of its local oscillator, for example) and first introduced, the generator 9 (frequency) via the control device 12. In this case, jobs can be supplemented by a frequency counter for measuring the frequency of the local oscillator of the receiver, and as the first controlled oscillator may be used in the t set the frequency of the first controlled oscillator in the system configuration process: "generator CGS receiver", provided in the workplace 4. Here managed the first generator 9 is included in the ring PLL. The control input of the generator 9 is connected to the output of the introduced phase detector 13, the first input of which is connected to the local oscillator of the receiver, and the second to the output of the second introduced transfer unit frequency 14. The first input is entered transfer unit frequency 14 is connected to the generator 9 and the second input is introduced to the second generator 15. The frequency of the second put of the generator 15 is determined from the expression:

(3) F2FCGSFFC,

where FCGSfrequency equal to the carrier frequency CGS that is transferred to the controlled channel reception;

FFCintermediate frequency of the receiver.

When the specific location of the carrier frequencies CGS about the working frequency of the monitored receiver the choice of the sign before the value of the intermediate frequency FFCdepends, above or below the frequency of the local oscillator of the receiver tuning frequency of the main receiving channel of the receiver. Under this condition, when normally operating the ring PLL, the output of the second transfer unit frequency 14 will set the frequency equal to the frequency of the local oscillator of the receiver, and the output frequency is controlled first wedenig the Scriptures. This will configure the signal generator CGS in the middle of the bandwidth of the receiver with the error defined almost the tolerance on the value of the intermediate frequency of the receiver. The generator 15 may be common to all jobs and to be part of the set of generators CGS. If it is necessary to consider the actual value of the intermediate frequency of the receiver and to fine-tune the receiver to the middle of the strip passing it, or to form the output frequency transfer unit frequency 8 for control of various receiving channels of the receivers, using only one (or at least a smaller set of generators CGS) generator CGS, generator 15 may be installed on the workstation and change the settings of the input signal of the receiver, changing only the frequency of this oscillator signals from the control unit 12.

Thus, the proposed control system parameters of the receiver decides the most expensive task metrological support of production REA the task of creating the input test signal receiver. The control system receivers are distinguished by high technical and economic characteristics, because the build system, its structure provide sravnitel point working range of the receiver, using a variety of quality signals CGS. The cost of each equipment of the workplace, i.e. the cost of its constituent units and devices may be optimized by placing in accordance with the requirements of a specific workplace settings and the quality of the synthesized test signal.

According to the proposed technical solution is developed control system parameters receivers and experimental operation. The proposed control system parameters receivers supports most of the known methods of control parameters of the receiver and has the qualities to become the standard tool of control in the industry.

1. Control system parameters radios, containing centralized signal generator, connected to a communication line with the workplace of controllers, each of which contains consistently connected the power rating of the input signal of the radio, the radio, the unit of analysis of the output signal of the radio receiver and control unit, wherein the Central frequency of the signal generator offset of the control channel of the radio, working on michem the first input of the first transfer unit of frequency is the entrance workplace regulator, the output of the transfer unit frequency connected to the input of the unit normalization of the input signal of the receiver, and the output of the control unit, through the introduction of a controllable oscillator connected to the second input of the first transfer unit frequency.

2. The system under item 1, characterized in that tsentralizovannye the signal generator is connected by a communication line with employment regulations through the introduction of the switch, the control input of which is connected to the output of the control unit of the relevant workplace regulator.

3. The system under item 1, characterized in that the input-driven generator included in the ring phase-locked loop, and the input entered controlled oscillator connected to the output of the introduced phase detector, the first input of which is connected to the local oscillator of the radio receiver, the output to the input of the controlled oscillator and a second input connected to the output of the additionally introduced the second transfer unit frequency, the first input of which is connected to the output of the controlled oscillator and the second input to output added generator.

 

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