SU570998A1 - Unit for monitoring voltage-code, time delay-coden-discharge converters and arithmetic devices manipulating converted codes - Google Patents

Description

changes, and the output to the second input of the controlled time delay converter – code, the second input of the correction input block is connected to the first output of the control unit, and the output to the first input of the second switchboard, the second input of which is connected to the second output of the program block, the third input to the third output of the program block and to the input of the reference converter, the code is voltage, and the fourth input is to the second output of the control unit, the first input of the display unit and the first input of the first switch code, the second input of which is The time delay is the code and the first input of the controlled arithmetic unit, the output of which is connected to the third input of the first switch of codes, the fourth input of which is connected to the output of the monitored voltage converter and the second input of the monitored arithmetic unit, and the output to the third the input of the display unit and the second input of the code comparison unit, the third input of which is connected to the output of the second code switch and the fourth input of the display unit and. The drawing shows a block diagram of the proposed device. The device includes a controlled object 1, a time delay converter 2 — a code, an exemplary code 3 converter — a time delay, a periodic sequence generator 4, an arithmetic unit 5, a first switch 6 of controlled codes, a program block 7, a control block 8, a voltage converter 9 - code, exemplary converter 10 code - voltage, display unit 11, block 12 compare codes, second switch 13 control codes, block 14 input correction. Block 7 contains information, which is entered in it in the form of binary codes, about the repetition period with which the sequence should start to run converters 2 and 3, codes of checked points of converters 2 and 9 of the device being monitored, corresponding device codes 5 after executing it certain arithmetic operations, codes for the permissible deviation of the monitored parameter, and correction codes for the monitored parameters. The generator 4 generates three pulse sequences, the period of which is specified by the binary code received from block 7 "and its input. Moreover, the sequences on the iBOM and the third outputs are delayed relative to the sequence on the second output. The pulse sequence from the second output of the generator 4 records the code in the converter 3, which comes from block 7 to its third input. The pulse sequence from the first output of the generator 4 starts the converters 2 and 3, and the sequence from the third output interrogates the result of the comparison and switches the codes of the monitored parameters. The exemplary converter 3 incorporates an "-sized binary counter and a reference frequency generator, the value of which is related to the frequency of the reference generator of the converter 2 as follows: (OPZ - / OPg / OPa (4, o) / OP; where jonf is the frequency generator in converter 3; fon, -frequency of generator in converter 2. The time delay s, which is formed at the output of converter 3, is associated with the control code as follows: t, N. where L is the decimal number expressing the value of the number with base 2 reduced to base 1 0; A is the error introduced into the delay by instability of the frequency of the reference oscillator and elements. Typically, the value of A does not exceed the value of N. 22, where l is the number of bits of the converter 3. For determining the value of L, those values 2 are summed up, the corresponding code bit of which has Value 1. Monitored converter 2 performs the inverse operation, namely, converts the time delay, which is generated by converter 3, into a proportional binary. The exemplary converter 9 converts the code arriving at its input from block 7 into proportional voltage. Again, converter 10 is composed of a resistive TNP matrix. The output voltage of the converter 10 is associated with the binary code as follows:, o: L: –A, o ± L :, de AI is the error introduced into the transformed voltage due to instability of the circuit parameters. To reduce the error AI, converters 2 and 3 have a common power voltage. The monitored inverter will invert the voltage to a proportional binary code.

Consequently, if converters 2 and 9 have a discrete conversion equal to the standard converters, then they form codes whose continuity differs from the control one by the value determined by the conversion error of the specified converters.

By analyzing the magnitude of the error by comparing it with a given value, it can be concluded that the time delay or voltage is correctly converted to a proportional binary code.

Arithmetic devices that perform certain operations on the converted codes are monitored by comparing the calculated code values (control code) with the codes received from device 5 after performing the corresponding operation.

Comparison of codes and analysis of the measured conversion error is carried out in block 12. To do this, the input of block 12 through the switch 6 and the switch 13 receives the codes of the monitored and control parameters. Block 12 determines the difference between the control and monitored codes and compares the resulting difference with the tolerance code for this parameter, which is included in block 7. If the code difference is less than or equal to the allowable one, then the monitored parameter (functional node) is good, if it is greater, then the parameter is recognized faulty. The result of the analysis from block 12 is output to display unit 11.

Block 8 generates commands that, in block 7, select the code of the checked point for converters 10 and 3, the code to form the generator 4 repetition period, the tolerance code of the monitored parameter; in block 12, the comparison of the monitored parameter is permitted or denied, and through the code switches, the input of block 12 is connected to the code of the controlled and control parameters.

The device works as follows. At the operator’s command to start the product control, block 8 generates commands that select from block 7 codes for generator 4, converters 3 and 10 of the first point to be checked, through switch 6 are selected directly from block 7 or through block 14, the control code buying} ia the second input of the block 12, and the first input through the switch 6 is connected to the code of the first control parameter (for example, the code from the converter 2).

The pulse sequence from the second output of the generator 4 records the code of the tested point in converter 3, and after some time the pulse sequence from the first output of generator 4 starts converters 2 and 3. Then, at the output of converter 3, a pulse is formed, according to which converter 2 finishes converting the codes.

At the same time, the voltage is converted from the converter 10, controlled by the converter 9. Until the pulse sequence appears at the third output of the generator 4, block 12 is prohibited from outputting the comparison result.

The pulse sequence from the third output of the generator 4 is polled

the result of comparing the difference code of the control and monitored parameters with the tolerance code. If the tolerance code is greater than or equal to the difference code, then after n measurements in block 8, a command is generated, according to which in block 12

through switch 6, the code of the next monitored parameter is supplied, and through switch 13 to the second input of the 12 block of the block 7 of the control code of this parameter, after which the measurement cycle will be repeated. To this moment

The conversion of voltage to code in the controlled converter 9 is completed, since the repetition period of generator 4 is output so that the time spent on controlling the converter, the time delay - the code is longer than the conversion time. The monitoring process continues until all parameters at all control points in block 7 are checked, then from block 8 to block 11

The signal "product is formed correctly. If in the control process a deviation is detected in any parameter by an amount greater than the tolerance code of this parameter, in block 8, a ' parameter is not suitable, which is output to block 11 for display. In addition, in block 11 of block 8, a signal is issued indicating the name of the malfunctioning parameter, and from switches 6 and 13 the value of the codes ko) 1 controlled

and control parameters.

Thus, the proposed device provides control of the entire device as a whole, and in case of failure of one of its functional units, it indicates specific

faulty functional unit.

 o rm u l a i 3 o o teren u

Device control / g-bit converter converters - code, time delay - code and arithmetic devices that perform operations on unresolved codes, containing an exemplary converter code - voltage, the output of which is connected to the input of the voltage converter - code, generator of non-periodic sequences connected to the output

the program block, the first input of the control unit and the first input of the code comparison and analysis unit of the measured error, which is connected to the first input of the display unit, characterized by

that, in order to expand the functionality of the device, an exemplary code-time converter, a correction input block, first and second code switches were entered into it, the first input of the model code-time converter connected to the first input of the time-controlled converter being the code and the first the output of the generator of periodic sequences, the second output of which is connected to the second input of the model converter code - time delay, the third input of which is connected It is connected to the first output of the program block and the first input of the correction input block, and the output to the second input of the controlled converter; time delay — code, the second input of the correction input block is connected to the first output of the control unit, and the output to the first input of the second switch of codes, the second input which is connected to the second output of the program block, the third input is connected to the third output of the program block and to the input of the reference code converter

voltage, and the fourth input - to the second output of the control unit, the first input of the display unit and the first input of the first switch of codes, the second input of which is connected to the OUTPUT of the controlled converter; time delay - the code and the first input of the monitored arithmetic device, the output of which is connected to the third input of the first switch codes fourth

the input of which is connected to the output of the controlled voltage converter - the code and the second input of the monitored arithmetic unit, and the output to the third input of the display unit and the second input of the code comparison unit, the third input of which is connected to the output of the second code switch and the fourth input of the display unit.

Sources of information taken into account in the examination

1. USSR author's certificate 337932, cl. NOZK 13/02, 10.28.69.

2. USSR author's certificate No. 399059, cl. D 01H 7/20, 10.27.69.