SU1278909A1 - Device for determining machine loads - Google Patents

Abstract

The invention relates to instrumentation and measurement technology and can be used when testing machines under operational conditions. The purpose of the invention is to improve the accuracy of the device. The device contains a load sensor, a path sensor, AND, OR, comparison, frequency divider, keys, switch, key register, memory block, encoder, re-. a hysterator, a frequency generator, an input driver and an operator console. 2 Il.

Description

The invention relates to instrumentation and measurement technology and can be used to determine the loads of mobile machines under operational conditions.

The aim of the invention is to improve the accuracy of the device.

Figure 1 shows the structural diagram of the proposed device; 2 shows timing diagrams for the operation of the device.

The device contains a load sensor, made in the form of a sensor 1 of the working operation of the machine and a motion sensor 2, the first element FROM, the divider 4 frequencies, the comparison element 5, the sensor 6, the input driver 7, made in the form of two serially connected waiting multivibrators, third fourth and fifth elements And 8-11, respectively, frequency generator 12, first and second elements OR 13 and 14, respectively, operator’s console 15, keys 16, switch 17, encoder 18, memory block 19, register 20,, recorder 21, unit 22 write-and in Numerals 23 car.

The device works as follows.

When the machine performs a working operation while it is moving, the outputs of the sensor 1 of the working operation of the machine and the sensor 2 of the movement appear

.signals of logical 1 and through the first element of AND 3 the frequency divider receives a signal whose frequency

proportional to the load of the machine. Divider 4 is the frequency of the signal divided by the division factor set depending on the number of quantization levels selected. Received frequency signal arrives.

.on comparison element 5, made in the form of a shift register. With the appearance of a pulse at the input of the comparison element 5 (Fig. 2a), a logical level 1 appears on its first output bus (Fig. 2.U. As the next input pulses arrive, the level of logic 1 shifts along the buses 2.3 ... n (Fig. 26.2). The number of buses of the comparison element 5 is equal to the selected number of quantization levels. During the movement of the MAGEY from the sensor 6 of the path, the input of the imager, 7 of the input signal, receive pulses at regular intervals of the distance traveled.

From the leading edge of these pulses, pulses are generated at the first output of the imaging device 7 of the input signal. the duration of q (Fig.2A), which

arrive at the first input of the third element And 9. The same pulses of duration J, (fig.2a) come from the second output of the generator 12 to the first input of the fifth element And 11. At

The console 15 is set to the measurement mode: the dependence of the load on the path (s) or on time (t). In the first case, the level of logical 1 appears on the first

the output of the operator's console 15, in the second - the second output. If there is a logical 1 on the first output of the console 15 operator signal from the first output of the driver 7 input signal

passes through the third element AND 9 and the second element OR 14 to the controlled inputs of the switch 17, the encoder 18, and the keys 16, which are opened for the time S ,. If there is a logical 1

at the second output of the operator’s console

the signal from the first outputs of the generator 12 frequency passes through the fifth element AND 11. and the second element OR 14 to the same inputs of the switch 17, the encoder 18

and keys 16. During time T,

the switch 17 makes its inputs serially connected to the output busbars of keys 16-1. . ., 16-11 and encoder coding 18

cell numbers of memory block 19. Of

memory block 19 during the time f (Fig. 2e), information is output to the register of the 20th number in the following sequence: through the distance covered path E (or quantization level polling period T) from the start of measurements - from the 1 st memory cells; after 2 (2T) from the beginning of measurements -: from n + 1 by memory cells; through ZR

(ЗТ) from the beginning of measurements from 2p + 1 to .. 2p + to memory cells, etc. In the register of the 20th number, the number or 0 is added to the nth format that was derived from memory block 19. A unit is added if one of the inputs 1, ..., n of the switch 17 simultaneously contains levels of logical 1, and the read cell number of the block 19 corresponds to the number of the input

Claims (1)

switch bus 17. A unit in register 20 of the number is also added to the information output from memory block 19 and corresponding to the number of gaps E traveled and polling periods of quantization levels T for the total running time and for the duration of the useful work (running time in the presence of movement of the machine). In memory block 19, the information is rewritten from register 20 and read switch 17 for a time (or T + T,) from the start of measurement, where V is the speed of the machine, information is copied into the following cells of memory block 18: 1 according to the p from the switch, p + 1 to p + n from the register 20. Similarly, the information on the number of gaps of the traversed path E and the polling periods of the quantization levels for the total time of work and for the time of useful work is written to other block 19. After writing the number to the memory block 19, the signal from the second output of the input signal generator through the second element AND 8 and the first element OR 13 or the frequency generator 12 through the fourth element AND 10 and the 1st element OR 13 (Fig. 2g) is reset. the frequency divider 4 and the comparison element 5, after which the processes of frequency division, pulse shifting, reading and writing information 1 are repeated in time with the arrival of signals from the driver 7 of the input signal or frequency generator 12. The information accumulated in block 19 allows the operator to determine the duration of the load at each quantization level or load distribution over the path traveled by quantization levels (i.e., construct a histogram of the machine loads): total work time and useful time; common path and the path of useful work. All this information is output to the recorder 21 and by commands from the third output of the remote 15. The device is located on the mobile machine. In addition to the above, the memory block 19 stores information on the distribution of load across quantization levels at discrete points in time (through a quantization level polling period T) or at equal intervals of the distance traveled 2 obtained during operation. After completion of the work, this information is output to the recorder 21 and can be output from the memory block 19 to the recording block 22 or the computer 23 according to commands from the third output of the operator’s console 15 (information can be output in stationary conditions). The information recorded by the recording unit 22 allows the process of changing the load of the machine to be restored and analyzed, and the processing of this information on the computer 23 allows obtaining the statistical characteristics of the processes. An apparatus for determining the loads of a machine, comprising a machine load sensor, a comparison element, keys, a frequency divider, the first OR element, a pulse generator and a recorder, characterized in that, in order to improve accuracy, the AND elements, the switch, the cipher ; torus, memory unit, number register, path sensor, input driver, second OR element and operator console, load sensor output through the first element AND is connected to the first input of a frequency divider, the output of which is connected to the first input of the reference element whose outputs are connected to the first inputs of the corresponding keys, the outputs of which are connected to the first inputs of the switch, the first and second outputs of which are connected respectively to the first input of the number register and to the first input of the memory block, the second input of which is connected with the output of the digitizer, the third with the output of the number register, the second input of which is connected to the first output of the memory unit, the second output of which is connected to the recorder input, the output of the path sensor through the input signal conditioner connected to the first inputs of the second and third elements And, the second inputs of which are connected to the first output of the operator's console, the second output of which is connected to the first inputs of the fourth and fifth elements And, the second inputs of which are connected to the outputs of the pulse generator, the outputs of the second and fourth elements And black Without the first element OR are connected to the second inputs of the frequency divider and the comparison element, the outputs of the receiver and the fifth elements AND through 5. 12789096 the second OR element is connected to the second third output of the operator’s console with the key inputs, with the second key input to the fourth input of the switch unit and with the encoder input,; mi ti 20 AND t7 AND 21 P Mr.P - “22 J g- J