SU408354A1 - DEVICE FOR DETERMINATION OF CHANGE CODE CORNER CONVERTER - CODE - Google Patents

Description

one

The invention relates to automation and computing and serves to determine the change of the code of the angle-code converter.

Devices are known for determining the change of the angle converter code — a code containing a program block whose nerve output is connected to the input of the ANGLE transducer — a code whose outputs are connected to the corresponding input of the former, whose outputs are connected to the first inputs of the corresponding And, second the inputs of which are connected to the second output of the program block, the pulse counter, the inputs of which are connected to the third output of the program block, and the outputs are connected to the third inputs of the corresponding first circuits " The outputs of which are connected to the inputs of the second circuit “And, the output of the second circuit“ And connected through the circuit “NOT to the first input of the third circuit“ And, the second input of which is connected to the second output of the program block, and the output is connected to the counting input of the pulse counter, two triggers , two differentiating circuits, the same vibration, the fourth and fifth And schemes, and the delay line.

Such devices are characterized by a low reliability of determining the change of the code of the angle-code converters.

To increase the reliability of the device in it, the output of the third circuit "And connected

with the first input of the first trigger, the second input of which is connected to the output of the second circuit “And, and the output through the first differentiating circuit is connected to the first input of the second trigger and to the input of the one-vibrator, the output of which is connected to the first input of the fourth circuit“ And through the second differentiating circuit and the delay line - kp to the second input of the second trigger, the output of which is connected to the first input of the fifth circuit “And, the second input of which is connected to the output of the second differentiating value, the second input of the fourth circuit“ And connected to the output of the second circuit "And, and the output - with the second entrance

home of the second trigger.

The drawing shows a functional diagram of the proposed device.

The device contains a converter 1, a software block 2, a driver 3, a pulse counter 4, the circuit “AND 5, the second circuit“ And, and the first 5, the second 6, the third 7, the fourth 8 and the fifth 9 circuit “And, the circuit“ NOT 10, the first 11 and second 12 triggers, the first 13 and the second 14 differentiating circuits, the one-shot 15 1P delay line 16.

Program block 2 generates pyemuls of a certain frequency. A predetermined number of pulses is necessary to sequentially convert the code of the converter 1 to the natural binary code by means of the generator 3.

The next pulse is a clock and comes from the output of software block 2 to the inputs of the "And 5 and" And 7 circuits. Counter 4 has a number of bits equal to the number of bits of the converter, and in a "similar state, it contains a zero code.

When the converter 1 shaft rotates in one direction, the output code is formed in each cycle. Through the And 5 circuits, this code is compared with the code recorded in counter 4. If the converter 1 code is changed, then with the arrival of the clock pulse, the And 6 circuit does not work, and through the NOT 10 circuit, a high potential is applied to the input of the And 7 circuit. Since the clock signal from program block 2 arrives at its second input, a signal appears at its output, which indicates that the converter 1 code is mixed. The output signal of the AND 7 circuit is the output signal of the device, and is also fed to the count input of the counter 4 and changes its code to one. From this point on, the device circuit is ready for the next change in the converter code. However, before this, the device checks the correctness of the code change.

For this, the signal from the output of the circuit 7 changes its state trigger 11, as a result of which, through differentiator 13, the trigger 12 is transferred to the new state and the one-shot 15 is triggered. The duration of the one-shot 15 is chosen so as to cover the time of the next clock pulse by an amount, for example, about half the time between adjacent clock pulses. Due to the operation of the odiovibrator 15, the corresponding input of the circuit "And 8 during the time the one-vibrator is in a temporarily stable state will be under high voltage.

With the arrival of the next clock pulse from software block 2, if the code of converter 1 is correctly interleaved, signal “AND 6” appears at the output. In this case, circuit “AND 8” and returns trigger 12 to initial initialization. This removes the high potential from the input of the circuit "AND 9. Now, although at the moment the one-shot 15 returns to steady state, a signal is formed through the differential circuit 14 at the other input of the circuit" AND 9, the output of the last signal about an incorrect change of the converter code does not occur . With the output of the differentiating circuit 14, the correct state of the trigger 12 is confirmed with a certain delay.

With the arrival of the same clock pulse

if the code of the tested converter is not interleaved and the output of the circuit “AND 6 signal does not occur. In connection with this, the < 8 > does not work " " trigger 12 does not return to its original position. At the appropriate input of the circuit "And 9, the potential is high. When the one-shot 15 goes to a permanently stable state, the differentiating circuit operates

14, and the signal is fed to the second input of the " 9 " circuit. The latter triggers and signals an incorrect sequence of code change of the converter 1.

The described control is convenient not only for

testing the correctness of the test transducer, but also allows all the time to automatically monitor the test device and the comparability of the test device, which is very useful in practice.

Subject invention

Device for determining the change of the angle converter code — a code containing

the software block, the first output of which is connected to the input of the angle converter - the code, the outputs of which are connected to the corresponding inputs of the imaging device, the outputs of which are connected to the first inputs of the corresponding first I circuits, the second inputs of which are connected to the second output of the program block, a pulse counter whose inputs are connected with the third output of the software block: ka, and the outputs are connected to

to the third inputs of the corresponding first circuits “H, the outputs of which are connected to the inputs of the second circuit“ And, the output of the second circuit “They are connected through the circuit“ NOT to the first input of the third circuit “And, the second input of which is soy

It is connected to the second output of the software unit, and the output is connected to the counting input of the pulse counter, two triggers, two differentiating circuits, a one-shot, fourth and fifth And schemes, and a delay line, in order to increase the reliability of the device , the output of the third circuit "And connected to the first input of the first trigger, the second input of which is connected to the output of the second circuit" And, and the output through

the first differentiating circuit is connected to the first input of the second trigger and to the input of a single vibrator, the output of which is connected to the first input of the fourth circuit “P” and through the second differentiating circuit and the delay line to the second input of the second trigger, whose output is connected to the first input of the fifth circuit “I , the second input of which is connected to the output of the second differentiating circuit, the second input of the fourth AND circuit is connected to the output of the second AND circuit, and the output is connected to the second input of the second trigger,