SU568959A1 - Displacement measuring system - Google Patents

Description

to the inputs of the controllable keys block, the first output of which is connected to the first input of the first counting block, the output of each previous counting block through the connected memory elements and OR connected to the first input of each subsequent counting block, the second input of each counting block is connected to the corresponding even the output of the controllable keys block, other odd outputs of which are connected to other inputs of the OR elements, the output of the Last counting block is connected to the input of the computer.

Such an embodiment of the device allows the recording of any number in fewer cycles and provides simultaneous recording of information throughout all decades (counting blocks), which increases the speed outside the device and extends its functionality.

FIG. 1 shows a block diagram of the proposed device; in fig. 2 - diagram of the counting unit.

The displacement meter contains a displacement transducer 1, a computing device 2, a generator of 3 pulses, a unit of 4 directional keys and counting units, elements of Memory 6i-6ga-1, and elements OR 7i-7 '-1.

The combination of elements 5i-5p, 6i-Qn-i and 7i-7.1-1 is a scaling unit.

Each counting unit (see Fig. 2) is made of a five-meter counter 8, a one-bit binary counter 9 and an element 10 OR connected between them. The first input of each block 5 is formed by the counting input of the counter 8, the second input is one of the inputs of the element 10 OR, and the output of the block 5 by the output of the counter 9. Depending on the code in which the blocks 5 operate, the order of switching on the counters 8 and 9 can be reverse.

The blocks 5 are connected to each other by means of the OR elements 7 and the memory elements 6. Each memory element 6 is a one-shot or trigger and is designed to memorize the overflow of the corresponding decade (block 5).

The output of sensor 1 is connected to the input of the generator 3 pulses, which are connected by I-il5 with a block of 4 controlled keys and a bus 16 with the setting inputs of elements 6. The outputs of block 4 are connected to the first input of the first block 5i, to the second inputs of all blocks 5i-5i and the second inputs of the interdecade elements 7 OR, the output of the last block 5p (of the last decade) is connected to the input of the calculating device 2. The task for the table-wapia is set in block 4.

The generator 3 pulses from the input signal of the sensor 1 generates and sends the following measures from the bus: on the bus through the bus 12 -T1, T2, on the bus 13 -T1, T2, TZ, on the bus 14 -T1, T2, TZ, T4, on bus 15 - T5, for each element 6 - one

impulse following T5 cycles, in this case T6, T7 and T8.

Consider the operation of the device, assuming that all circuit elements are in the initial (zero) state.

When the Object is moved, the pulses from the sensor -1 are fed to the input of the generator of 3 pulses. Bundles of pulses through their channels arrive at block 4 of the control keys. From block 4 of controlled keys, depending on the value of the specified conversion coefficient, the bursts of pulses are fed to the corresponding inputs of the blocks 5. The bursts of pulses containing from 0 to 4 pulses of clock cycles T1, T2, TZ, T4 are fed to pteric counters 8: in the first block 5i - directly, and in blocks bz, 5z, ..., 5p - through elements 7 OR. Pa input of each binary counter 9 can receive up to one pulse of the clock T5 through the element 10 OR.

When a single pulse arrives at the generator 3 in each block 5, a digit is written to indicate the scale of the corresponding bit.

In the process of recording information in decades, their Overflow is memorized by the memory elements 6, from the output of the generator 3 to the inputs of the corresponding elements 6 clock signals T6, T7, T8 are sent and the elements are interrogated and the overflow signal transmitted to the subsequent blocks 5 and sent a scaled signal from the output of the last block 5P to the computing device 2.

The maximum number of ticks when converting in the proposed device is Sj-) - (l-1), where n is the number of counting blocks 5. The maximum number is recorded in 4 ticks at the input of a five-digit counter 8, with one measure at the input of the binary counter 9 and ( n-1) polling steps of the memory elements 6.

As an example, consider the mass stabilization of the pulses of the displacement transducer 1 having a value of 0.9747 mm. At the output of the proposed device, it is necessary to obtain information about the length in millimeters with an accuracy of no worse than ± 0.0001 (0.01%).

When a conversion coefficient of 0.9747 is set in block 4, from each pulse of sensor 1, both of the inputs of each block 5 receive the number of pulses according to the same face.

In the initial state, when all blocks 5 are in the zero state, from the first momentum of the change in them the number 9747 is written in 5 cycles (in block 5i digit 9), all elements of the 6 memories will remain in the initial state, since In the decades there was no overflow. Therefore, there will be no signal at the output of the device. From the second movement pulse, the number 9747 is also added in five strokes to the grain number. In the first, third and fourth decades there will be an overflow and the memory elements of these decades will be remembered, and in blocks 5 the number 8484 will be recorded. The next three cycles will poll the memory elements 6, while the scaled signal corresponding to 1 mm of movement, the counting device 2 will arrive, and in blocks 5, after the final recalculation, the number 9494 will remain. Thus, the value of one pulse will be converted in 8 cycles.

When the next impulses are sent from sensor 1, the fractional parts of the impulse price value are summed, and the calculating device 2 emits impulses corresponding to movement in millimeters.

The device will work in the same way, if a single-bit binary counter 9 is installed at the input of block 5, and a counter at the output of the counter 8. In this case, only the weight of pulses entering the input of the five-counter counter changes - it will be 2 Instead of 5.

The proposed device, in contrast to the known, provides a measurement of the movement of products at higher speeds of movement. The performance of the proposed device is 40% higher than the known - 8 cycles against 14; besides, it possesses more

Because of the operational capabilities that enable it to be used in measurement systems that require operational control of the scale transformation, since only four switching elements in the decimal code are controlled, instead of i4 elements in the binary code, which are inconvenient for operators.

Claims (2)

1. US patent number 3713139, cl. 340-347, 1974. 2. USSR author's certificate number 220097, cl. G 08 C 9/00, 1966.