SU1016744A1 - Displacement speed meter - Google Patents

Abstract

THE METER OF SPEED OF MOVEMENT containing the generator of frequency stabilizer / output of which is connected to the first input of the first key, the output of which is connected to the counting time counter, sensor. the time interval of the interval, the output of which is connected to the second input of the second key, the first input of which is connected to the output of the last bit of the adder. and the output through a ring-closed shear resistor is connected to the input of a velocity counter, the outputs of the bits of the shift register are connected to the first inputs of the AND circuits, the outputs of which are connected to the inputs of the digits of the adder, —that, in order to increase speed and ensuring its operation in the low speed range, a high-frequency generator and a memory register are entered into the meter, the time sensor output being connected to the memory register information write input and the time counter zero input and, the overflow output of which is connected to the second input of the first key, and the outputs of the bits through the corresponding bits of the memory memory rectifier are connected to the second inputs of the corresponding AND circuits, while the output of the high-frequency generator is connected to § the third input of the second key.

Description

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"I The invention relates to measuring equipment and instrumentation and is intended to measure linear and angular velocities. A vehicle meter is known, in which division blocks 13 are used to obtain speed values over measured time intervals. The disadvantages of this meter are complexity and limited speed due to the presence of division blocks. A moving speed meter is also known, which contains a temporal spacing sensor, a first key, a stabilized frequency generator, a speed counter and a counting device, consisting of a shift register, a time counter, an adder, a block circuit And 5 and a second key, while the stabilizer frequency generator outputs and a time interval sensor are connected to the first and second inputs of the first and second keys, the output (the first key is connected to the input, a time reference, and the output of the second key is connected to the speed counter via a lock The circular shift register outputs of the bits of which are pairwise with the corresponding outputs of the bits of the time counter are connected via the AND circuits to the inputs of the bits of the adder, the output of the last bit of which is connected to the third input of the second C2 key. The disadvantages of the known motion speed meter are low speed and inoperability in the range of low speeds. The purpose of the invention is to increase the speed of the rotor speed meter and ensure its efficiency in the range of low speeds. The goal is achieved. The meter that contains the stabilized frequency generator, the output of which is connected to the first input of the first key, the output of which is connected to the counting input of the time counter, time sensor, the output of which is connected to the second input of the second key, the first input of which is connected to the output of the last bit of the adder, and the output via a loop-closed shift register to the input of the speed counter, the bits of the shift register are connected to the first inputs of the AND circuits whose outputs are connected The inputs of the totalizer bits are entered into a high-frequency generator and memory register, the npH4ef4 output of the Time Interval sensor is connected to input 3 with an alias memory register information and the installation input zero time counter, the overflow output of which is connected to the second input of the first key, and the outputs bits through the corresponding bits of the memory register to the second inputs of the corresponding circuits AND, while the output of the high-frequency generator is connected to the third input of the second key. The drawing shows a structural diagram of a motion speed meter. The meter contains a sensor 1 time interval, the first key 2, the generator 3 stabilized frequency, counter 4 time, counting device 5, counter 6 speed, shift register 7, circuit And 8, adder 9, second key 10, the second high-frequency generator 11 and register 12 memory Sensor 1 is connected to the fault input of the counter 4, the input of the key 10 and the input for recording the information of the memory register 12, the generator 3 is connected to the counter 4 via the first key 2, the generator 11 via the second key 10 and the looped ring 7 is connected to the counter 6. The outputs (to +1) of the register bits 7, except for the first, and the outputs of the K-s bits of the register 12 are connected in pairs to the inputs of the AND 8 circuits. The outputs of the AND 8 circuits are connected to the inputs of the K-th bits of the adder 9, the output of the last the bits of which are connected to the input of the key 10. The outputs of the k-th bits of the counter 4 are connected to the inputs of the k-th bits of the reg Istra 12, and the signal about the overflow of the counter 4 is fed to the input of the key 2. The speed meter works as follows. In the initial state, the adder 9 is cleared, the unit is recorded in the first digit of the register 7, the key 2 is open, and the key 10 is closed, the signal from the sensor 1 is absent. When the next pulse is received from sensor 1, the code proportional to the previous time interval - from counter 4 is copied to register 12. With the same sensor 1 pulse, counter 4 starts to zero and begins to receive the time pulses of the next interval from generator 3. At the same time, in counting device 5 the time code is converted into a speed code. The same pulse from sensor 1 opens key 10 and high-frequency pulses from generator 11 move the unit recorded for the first bit by bit of register 7. In this case, bit by bit, starting from the first, the adder 9 is rewritten from register 12. the turnover of the unit in register 7 is the number from register 12 is rewritten in the adder 9 once. Each time the next unit turns over in register 7, the number in adder 9 is summed with the number from counter 4. The summation continues until the cyNwaTopa 9 is filled, i.e. before recording the unit in the last.

310167444

SRI discharge. This signal closes the growth when it can overflow.

with key 10, the circulation of the unit in the re-counter 4, feedback is introduced by

the horn 7 stops and ends-overflow of the counter 4. At the same time

The conversion of the code tj in the code signal closes key 2 and measurement V}. . In this case, in memory 6, the memory shows the minimum value of the number of revolutions of the unit per speed, gistre 7, proportional to,. The effect of using the proposed method is provided by a single-rate speed meter by temporarily measuring the intervals to reduce the discreteness and,

meni and fast speed calculation in this way; Measurement errors of a scale .10growth growing in a known device for ensuring operability in accordance with an increase in the speed measuring device in the range of low speeds.

Claims (1)

MOVEMENT SPEED METER, comprising a stabilized frequency generator, the output of which is connected to the first input of the first key, the output of which is connected to the counting input of a time counter, a sensor, of a time interval, the output of which is connected to the second input of the second key, the first input of which is connected to the output of the last digit of the adder and the output through a shear resistor closed in a ring - to the input of the speed counter, the outputs of the bits of the shift register are connected to the first inputs of the I circuits, the outputs of which are connected to the inputs of adder bits, in that with the aim of increasing speed and ensuring its operability in the low-speed range, a high-frequency generator and a memory register are introduced into the meter, and the output of the time interval sensor is connected to an input for recording information of the memory register and with an input for setting the zero of the time counter, the overflow output of which is connected to the second input of the first key, and the outputs of the bits through the corresponding bits of the memory register to the second inputs of the corresponding AND circuits the generator is connected to the third input of the second key. □ Eye inputs υυυιнет- _ while EXIT High- Q.