SU550644A1 - Device for monitoring parameters of electronic products - Google Patents

Description

one

The invention relates to computing and can be used in equipment for monitoring parameters and diagnostics of electrical circuits.

A device for monitoring electronic products, containing its address switch, a unit for analyzing faults and logic processing, blocks for detecting faults, memory of faults, generating stimulating influences, switching stimulating influences, control and operational memory, is known. In this device, it is not possible to automatically determine (read out) the type and sequence number of the product under test without the operator’s fate. It is also known a device comprising a control unit connected to a normalizer switch, an analog-to-digital converter, digital and analogue comparators, and a recording unit. The output of the sensor switch through the normalizer switch, the normalizers, and the analog-to-digital converter (ADC) is connected to the recording unit. Valid values of parameters of electric circuits are entered from the control unit into the comparators. In accordance with the signals of the control unit, the sensor switch selects one of the sensor signals and, via the switch of the normalizers, connects this signal in direct or via normalizers to the inputs of the ADC and analog comparator. A digital signal from the output of the ADC is fed to the input of the comparator. Both comparators compare the signal with the settings. Comparison results are sent to the analyzer, which issues a validity rating to the recording unit only if the comparators' estimates coincide. However, this device is characterized by a small degree of automation of the process of quality control of products, namely, it does not allow to control the parameters of branched electrical and logical circuits, it does not. The possibility of automated input of control signals to the tested product is provided; there is no indication of the location of the malfunction of the tested product. In addition, the device has limited capabilities in the range of products to be tested, it is narrowly specialized and operates according to a rigid program laid down in the circuit of the control unit. Of the known devices, the closest to the invention to the technical essence is the device containing the switches.

sensors and stimulating signals, an analog-to-digital converter, digital registration and input of control programs, a command register, a generator of stimulating signals, the control inputs of which are connected to the corresponding outputs of the control unit, the first input of which is connected to the control input of the device, and the comparison unit. This known device is also characterized by the lack of the ability to automatically (read) the type and the order number of the product being tested without the operator's fate, which decreases the reliability of the control, since erroneously the result of testing one product can be attributed to another. In addition, there is no possibility to save the original information entered for the first frame of the check for a longer time, which complicates the check program and increases its volume. The aim of the invention is to enhance the functionality and increase the reliability of operation by making it possible to determine the type and sequence number of the product without the operator. In the described device, this is achieved by inserting a wiring and identification unit connected to a controlled product, a control input — to the corresponding output of the control unit and outputs — respectively, to the first inputs of the comparison unit, the sensor switch and the stimulus switch, the second and third the inputs of which are connected respectively to the first output of the command register and the output of the generator of stimulating signals, the input of which is connected to the second output of the command register, the third, fourth and the fifth outputs of which are connected respectively to the second inputs of the sensor switch, the comparison unit and the input of the digital recording unit, the output of which is connected to the second input of the control unit, the third input of the control unit is connected to the output of the comparison unit, the third input of which is connected to the output of the analog-digital converter connected by the input to the output of the sensor switch, the input of the command register is connected to the output of the input block of the control program. The drawing shows the block diagram of the device described and the number of signs: 1 - a controlled item; 2 - generator of stimulating signals; 3 - switch stimulating signals; 4 — connection and identification unit; 5 - sensor switch; 6 - analog-to-digital converter; 7- command register; 8 is a comparison unit; 9 - control program input block; 10 - digital registration unit; And - control unit; 12 - device input. The controlled article 1 is connected to the device with the help of the connection and identification unit 4. At the same time, in the reading part of block 4 of connection and identification, type codes and sequence numbers of the tested item are formed. On the "Start" signal, which is fed to the input 12 of the device, the control AND block generates a signal to transmit the read information from the code output of block 4 to one of the inputs of block 8 of the comparison. Simultaneously, by the signal "Start-up, control unit 11, output signals to start unit 9. The first frame of the control program containing information about the type of tested product, from block 9 goes to command register 7 and then through command register 7 goes to block 8. Comparison result goes from block 8 to control block 11, where it is analyzed. In the case of equality of codes, which means the compliance of the entered program and the type of product, on the control unit 10 of the digital registration there is a printout of the words of the following content: "Item XXX. ХХХ.ХХХ Л ХХХХХХ. If the product type codes according to the control program and from the connection and identification block 4 do not match, the digital registration block 10 prints the words “Product” Program. This means that the program is entered incorrectly or the wrong type of product is checked. At the end of the printout of the words "Item XXX.XXX.XXX of L / XXXXXX" control unit 11 sends a signal to block 9; On this signal from block 9 to the command register 7, the 2nd frame of the control program is written. This frame contains information on the output signals of the generator, on the numbers of the contacts of the circuit to be monitored and on the value parameters on the intervals between the contacts. Codes from the register of commands 7 are fed to the generator 2 of the stimulating signals, the switch 3 of the stimulating signals and the switch 5 sensors. For one frame check, all command codes are stored in command register 7, which is a chain of shift registers. As a result of the operations performed, the output of the stimulating signal generator 2 through the stimulating signal switch 3, through the tested section of the circuit 1 and through the sensor switch 5 is connected to the input of the analog-digital converter 6. After further monitoring, the switch 5 of the sensors is commanded from the command register 7, selected by the signals of the control unit 11, alternately connects to the input of the ADC 6 all the output contacts of the controlled product. Each time, after the next command is processed, the digital parameter code of the connected circuit from the ADC 6 output goes to block 8. The result of comparing this parameter code of the tested circuit from the ADC 6 and tolerance limit codes specified in the program, previously entered into the command register 7, goes block 8 to block 11 controls. If there is no signal about the presence of a circuit, the signals from the control unit 11 at the input of the switch 5 of the sensors change the contact codes so that all the contacts are sequentially crossed. If, as a result of comparing the codes from the output of the ADC 6 and the boundary tolerance codes from the command register 7, the comparison block 8 records the presence of a circuit, then the AND block analyzes the belonging of this contact to the controlled circuit. In this case, the codes do not arrive at the output of the top 5 sensor, and it is closed around the specified contact. On the signal from block 11, the control code of the connected contact (output end of the tested zeppe) is fed to the input of block 8, to the second input of which from the register of commands 7 alternately the contact codes of the controlled circuit are issued. The code corresponding to the closed contact in the switch 5 of the sensors is successively compared with the contact codes of the circuit under test, and the comparison results in the form of signals from the output of the block 8 are fed to the control block 11. The coincidence of the output contact code with one of the circuit codes specified by the program, and the correspondence of the signal to the specified tolerances (the previous result of monitoring the signal parameter for this contact is stored in the AND control unit) indicates an operable circuit. If the contact code does not match the specified circuit codes, the control unit 11 provides a printout of the words "Contacts XXX-XXX circuit." At the end of the verification frame, the monitoring of the parameters of the circuit itself can be repeated. In this case, from the register of commands 7, only codes corresponding to the contacts of the controlled circuit are supplied to the switch 5 of the sensors. The conformity of the circuit parameters to the specified tolerances is monitored. If a break in value or inconsistency is detected, the signals from control unit 11 on digital registration block 10 print the words "Chain XXX-XXX break or" Chain XXX-XXX does not meet the technical conditions. After testing one chain, the program is shifted by one frame , the commands of the next frame are read into the command register 7, and the monitoring cycle is repeated.

When checking the logic circuits, several codes can be sequentially fed to the switch 3 of the stimulating signals, providing contact closure and a set of test code. The verification of the output parameters of logic devices is performed in the same way as for the contacts of extensive electrical circuits.

Thus, the described device provides a complete automated control of the parameters of electro-radio engineering

chain of products, parameters of logical Circuits of Products, parameters of analog and logical functional units and blocks. As a result of monitoring, the location and type of failure are determined with automatic recording of monitoring results on the unit. In addition, it allows flexibility to switch from checking one type of product to another with a program change and a generator of stimulating signals.

Claims (1)

Invention Formula A device for controlling the parameters of radioelectronic products, containing switches of sensors and stimulating signals, an analog-digital converter, blocks of digital registration and entry of a control program, a command register, a generator of stimulating signals, the control inputs of which are connected to the corresponding outputs of the control unit, the first input of which is connected to the control input of the device, the comparison unit, characterized in that, in order to expand the functionality and increase the reliability of the operation, the Liver ability to determine the type and order number of a product without the operator’s participation; a connection and identification block is inserted in it, connected to a controlled product, a control input — with a corresponding output of a control block, and outputs — respectively, with the first inputs of a comparison block, a sensor switch, and a switch signals, the second and third inputs of which are connected respectively to the first output of the command register and the output of the stimulating signal generator, the input of which is connected to the second output of the command register, the third, fourth and fifth outputs of which are connected respectively to the second inputs of the sensor switch, the comparison unit and the input of the digital recording unit, the output of which is connected to the second input of the unit control unit, the third input of the control unit is connected to the output of the comparator unit, the third input of which is connected to the output of the analog-digital converter connected to the output of the switch pa sensors instruction register input connected to the output of the input unit control program.