SU1167504A1 - Device for measuring travel speed - Google Patents

Abstract

A DEVICE FOR DETERMINING THE SPEED OF SPEECH, containing a pulse speed sensor, a counter connected to a speed sensor, a pulse distributor connected to a counter, a first and second register, a subtractor and an adder. characterized in that, in order to increase accuracy, it is additionally equipped with third and fourth registers, the first inputs of which are connected to the pulse distributor, the output of the counter is connected (Г by the first input of the adder, the second input of the adder is connected to the output of the second register, the output of the adder is connected to the second input the first registrar, the outputs of which are connected to the second inputs of the second and third registers and the first input of the subtractor, the second input of which is connected to the output of the third register, and the output connected to the second input m fourth register.

Description

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The invention relates to computing and automation and can be used to measure the speed of an angular or linear re, for example, the speed of rotation of a room, shaft. The aim of the invention is to improve the accuracy of the device. FIG. 1 shows a diagram of the device; in fig. 2 is a timing diagram of the imulso distributor operation. The device contains a pulse counter 1 from a pulse displacement sensor connected to the first input of the adder 2 signals in half of the measurement interval, the output of which is connected to the first input of the first register 3, and the second input to the output of the second register 4 (auxiliary ). The outputs of the first register 3 are connected to the first inputs of the second register 4, register 5 storing the sum of signals of the first half of the measurement interval, subtractor 6 sums of the signals of the first half of the measuring interval from the sums of the signals of the second half of the measuring interval, the second input of which is connected to the output of the register 5 of storage the sum of the signals of the first half of the measurement interval and the output is connected to the first input of the register 7 of the storage signal of the velocity of movement. The second inputs of the counter 1 and the registers 3, 4, 5 and 7 are connected to the outputs of the distributor 8 pulses, the input of which is connected to the output of the generator 9 pulses of a stable frequency. The device works as follows. The pulses from the generator 9 of stable frequency pulses arrive at the distributor 8, which generates (Fig. 2) for each interval of measuring the speed of movement one pulse setting the zero of counter 1 and registers 3, 4, 5 and 7; t pulses ) from adder 2 register 3, m pulses ZpRg 4 code entries from register 3 to register 4, one impulse Zprg 5 record the intermediate amount from register 3 to register 5, one impulse Zprg 7 recording the resulting signal of the movement speed into register 7. 042 After setting zero counter 1 counts the number of them pulses from a pulse displacement sensor, while the number (code) obtained in block 1 is proportional to the displacement coordinate from the moment block 1 is set to zero. Codes of coordinates of movement through the adder 2 times during the measurement interval are rewritten by pulses of ZpRg 3 into register 3. For the first time, the code of the first coordinate is recorded in register 3, the second time the sum of the first and second coordinates, then the sum of the first, second and third coordinates and etc. The resulting sum is transferred by pulses Rsg 4 to the auxiliary register 4. After register 3 forms an intermediate sum of the codes of the coordinates of the first half of the measurement interval, it cuts the Cpr3 pulse in the middle of the measurement interval ne written in register 5. In the second half of the measurement interval, the operation of blocks 1,2,3 and 4 is repeated, after which in register 3 a second intermediate m sum of the coordinate codes of the second half of the measurement interval is formed. The unit 6 subtracts the first intermediate sum of the coordinates of register 5 from the second intermediate sum of the coordinates of register 3 and at the time Zprg 7, this difference is written to the register 7 of the resulting signal of the speed of movement. Since the first intermediate sum of coordinates is proportional to the average value of the coordinate of the displacement in the first half of the measurement interval, the second intermediate sum of coordinates is proportional to the average value of the coordinates of the displacement. in the second half of the measurement interval, and the measurement interval remains constant, the difference obtained in register 7 is proportional to the change in coordinates over the final (constant) time interval, i.e. proportional to the speed of movement in this range.

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Claims (1)

DEVICE FOR DETERMINING MOVEMENT SPEED, comprising a pulse speed sensor, a counter connected to a speed sensor, a pulse distributor connected to a counter, first and second register, a subtractor and an adder, characterized in that, in order to improve accuracy, it is additionally equipped with a third and fourth registers, the first inputs of which are connected to the pulse distributor, the output of the counter is connected to ~ the first input of the adder, the second input of the adder is connected to the output of the second register, the output of the adder is connected to the second input of the first register, the outputs of which are connected to the second inputs of the second and third registers and the first input of the subtractor, the second input of which is connected to the output of the third register, and the output is connected to the second input of the fourth register. Fig. 1 „„ SU ,,,, 1167504 1 167504