SU1059559A1 - Device for implementing input of information from discrete-type transduers - Google Patents

Abstract

DEVICE FOR INPUT OF INFORMATION FROM DISCRETE SENSORS, containing the shift register, the output of the serial code of which is the output of the device, the outputs of the parallel code of the shift register are the outputs of the parallel code of the first group of the device, the clock input of the sequential recording of the information of the shift register is the input of the device, and aa with it so that, with a view to increasing. speed, pulse shaper, delay element, first and second OR elements are entered, the output of the first element OR is connected to the clock input of the parallel recording of the shift register information, the first contacts of the discrete sensors are connected to the inputs of the parallel recording of the shift register information, except for the last input, and are the outputs of the parallel code of the second group of the device, the last input of the parallel recording of information in the shift register is connected to the second discrete contacts of the sensors and to the output the second OR element, the first input of which is connected to the second i input of the first OR element with the output of the delay element, the input (which is connected to the first input of the first OR element and the output of the pulse former, the input of which is connected to the second input of the second OR element the second input of the device, the output of the sequential code of the shift register 1 is connected to the input of the sequential recording of the information of the shift register.

Description

The invention relates to computing and can be used to enter information from bits of a discrete sensor and to prepare information for output to a higher level device in serial or parallel code.

A device for inputting information from discrete sensors is known, which contains a generator of reference pulses, the output of which is connected to the input of a pulse counter, the inverse bit outputs of which are connected to the inputs of the corresponding bits of the sensor, the output of which is connected to ONE generator input, the other input is connected to the inputs Installation in O pulse counter and with input control bus l.

The disadvantages of this device are low speed, because when the sensor’s -th digit is triggered, 5 generator pulses are necessary for the 5th poll, and therefore even at a frequency that is extremely high for the element base used, the time of one poll can reach and exceed not only minutes, but also the clock (so, if i 10 MHz, and the sensor’s 30 bits triggered, the polling time will exceed a minute, and if the sensor’s 40 bits worked, then one polling time will exceed 24 hours).

The closest to the proposed technical entity is a device for entering information from discrete sensors, which contains a (pt1) -shift shift register, the inputs of the first bit are connected directly and through the inverter to the output of the sensor, whose inputs are connected to the outputs of the circuit And the polling pulse generator, the unit output of each of the shift register bits, except the last bit, is connected to the first input of the corresponding circuit, and the polling pulse generator, the single output tn + D-ro bit register and the shift is connected to the input of the clock pulse generator, the output of which is connected to the counting inputs of the bits of the shift register, the resolution block executed on the (I-1) AND circuits, the first input of each i-th circuit AND the resolution block is connected to the zero output (1) -th bit of the shift register, and the output of the i-th circuit And the same flea is connected to the second inputs of the (i-1) -th circuit AND the resolution block and the th circuit And the polling pulse generator, the zero output of the last (h 1) -th the bit of the shift register is connected to the second input of the i-th circuit AND formed 1 .l pulses op dew 2J.

The disadvantages of this ycTiioflcTPH are the complexity and, as a result, the low reliability of operation, as it contains (2ti-l) two-input elements and, where n 5 is the number of sensor bits; additional complication of the device in the case of using standard registers having only one output in each bit (for example, when using scientific research institutes of K155 chip registers to obtain zero output, it is necessary to install an inverter for each discharge); the inability to use the sensor contacts in other

5 diagrams (for example, if at the location of the sensor it is necessary to indicate the position of the contact or if it is necessary to fix the moment of the change of the position of the contact) that

Q is especially significant if each bit of the sensor has one contact, as in this case it is necessary to multiply the contacts, which greatly complicates the device and reduces

5 reliability of its functioning; The low speed of the device, since for reading information about the position of the contacts of the sensor bits it is necessary (n + 1) generator pulses, i.e. The information reading time is i c (l + 1) T, where T is the period of the generator pulses.

The purpose of the invention is to increase the speed of the device,

This goal is achieved in that a device for inputting information from discrete sensors, containing a shift register, the output of which serial code is

0 output device, the outputs of the parallel shift register code are the outputs of the parallel code of the first group of the device, the clock input of the sequential recording of the register of the shift register is the first input of the device, the pulse generator, the delay element, the first and second elements OR, and the output of the first the OR element is connected to the clock input of the parallel recording of the shift register information; the first contacts of the discrete sensors are connected to the inputs of the parallel recording of the register information The motor, except the last input, is the output of the parallel code of the second group of the device, the last input of the parallel recording of information in the shift register is connected to the second contacts of discrete sensors and to the output of the second OR element, the first input of which is connected: the second input of the first IL element , 1 and with the output of the delay element, whose BXfX is connected to the first input

5 of the first OR element and with the output of the pulse generator, whose input is connected to the second input of the second OR element and is the second device input / output of the serial shift register code; connected to the input of the sequential recording of the shift register information. FIG. 1 shows the structural functional scheme of the proposed device; in fig. 2 is a diagram of the connection of discrete sensors. A device for reading information from discrete sensors contains a pulse shaping device 1, a delay element 2, the first element OR 3, the second element OR 4, discrete sensors 5, the Shift register 6, the second device input 7, the first device input 8, the outputs 9. device groups, output 10 of the serial device code, outputs 11 of the parallel code of the second device group, the first 12 and second 13 contacts of discrete sensors. The element delay value should somewhat (by 5-10%) exceed the duration of transients in register 6 when writing information in parallel code, i.e. be such that by the time a delayed pulse is output at the output of the element OR 3 in register 6, all transients caused by the impulse received from the output of the former 1 impulses without delay are completed. The device is started by applying a second zero signal to its second input 7, the duration of which must exceed twice the recording time of information in a parallel code to register 6. The output of the serial code of register 6 is synchronized with pulses of the clock frequency, i.e. single pulses of information have a duration equal to the period of clock pulses. A device for reading information from discrete sensors operates as follows. In the initial state in the bits of register 6 from the first to the l-and the position code of the contacts of the sensors 5 corresponding to the time of the last survey was recorded, the () -th digit contains the code, there are no single signals at the first input 8 of the device and the outputs 10 of the second group of the device (i.e., there are zero signals), there is a single signal at the second input 7 of the device, at the outputs 9 of the parallel code of the first group there is a code recorded in register 6, at the outputs 11 of the second group there is the position code of the sensors 5. When arriving at the second input 7 device zero pulse shaper 1 generates a pulse coming through the element OR 3 at the clock input of the parallel recording of information register 6, and tdk As at the inputs of the element OR 4 there are no single signals, then at its output and at the outputs of sensors 5 regardless of the position of their contacts and At the inputs of the parallel recording of information (D ,,,,, Dpl1) of register b, there are zero signals and therefore a zero code is written to register b. KjxDMe addition, the pulse c in the “stroke of shaper 1 is fed to the input of the delay element 2, from the output of which through the time delay. the pulse goes through the OR 3 element again to the clock input of the parallel recording of the information of register b, and through the OR 4 element to the (n + 1) -th input of the parallel recording, information (D + 1) of the register 6 and to the input of the sensors 5, from the outputs which, in accordance with their position (through closed contacts), a pulse passes to the inputs of parallel recording of information from the first through P (D ;, ..., D ") register b, C, register b is recorded into bits from the first according to p - and the position code of the contacts of the sensors 5, and in (P4 1) -th bit d -. Information input to the external device about the position of the contacts of the sensor 5 in the parallel code is carried out from the outputs 9 of the parallel code during the {Galichi) single signal at the second input 7 of the device. Input information about the position of the contacts of the sensors 5 in the serial code is also carried out. If there is a single signal at the second input 7 of the device by applying clock pulses to the first input 8 of the device 8, the serial code of the information is output to the outputs 10. In addition, since the output of the serial information code is connected to the input of the sequential recording of information of register b, then simultaneously with the issuance of the serial code, information is overwritten into the register of bits at the end of the output of information in p The register of the position of the contacts of the sensors 5, and in (n-1-1) -th position, the device is prepared for the next reading of information. The introduction of the pulse generator, the delay element, the two OR elements and the new connections favorably distinguishes the proposed device from the prototype, since the device is simplified when the number of sensors (bits) is three or more (except for the shift register, the device always contains four elements regardless of the number of sensors ); it is not necessary to complicate the device to the utmost when using standard registers (for example, K155 chip series); there is a signal from the contact of the sensors, which can be used in other schemes and therefore does not need to be multiplied; The information reading time is always equal to 2ti, where i is the parallel information writing time.

In register 6 shift entered

(n + 1) -th bit in which, when recording information about the position of the contacts of sensors 5, is always recorded

, so that when sending information in a sequential form, the code sending of information always begins with (i.e., to establish the beginning of sending information). I

Claims (1)

DEVICE FOR 'ENTERING INFORMATION FROM DISCRETE SENSORS, containing a shift register, the serial code output of which is the output of the device, the outputs of the parallel code of the shift register are the outputs of the parallel code of the first device group, the clock input of the sequential' write of the shift register information is the first input of the device, and especially with the fact that, in order to improve performance, a pulse shaper, a delay element, the first and second OR elements are introduced into it, and the output of the first AND element LI is connected to the clock input of the parallel recording of the shift register information, the first contacts of the discrete sensors are connected to the inputs of the parallel recording of the information of the shift register, except for the last input, and are the outputs of the parallel code of the second group of the device, the last input of the parallel recording of information in the shift register is connected to the second contacts are discrete ^ sensors and with the output of the second OR element, the first input of which is connected to the second input of the first OR element with the output of the delay element, the input of which is connected is connected with the first input of the first OR element and with the output of the pulse shaper *, the input of which Q is connected to the second input of the second OR element and is the second input of the device, the output of the serial code of the shift register is connected to the input of the serial information recording shift register. >