SU439771A1 - Device for automatic control of parameters - Google Patents

Description

one

The invention relates to the field of automation and instrumentation technology.

A device for automatic control of parameters is known, which contains sensors of signals whose outputs through the corresponding series-connected priority signal selection circuits are connected to the inputs of an encoder connected to a digital indicator, the elements And, Prohibit, Memory and the indicator of signals arrival.

The proposed device differs from what is known in that the outputs of the signal sensors are connected to the signal input of the “Forbid” elements, the outputs of which are connected to the informational inputs of the respective priority signal selection circuits, and the flicker inputs - with the outputs of the corresponding “Memory. The information outputs of the priority signal selection circuit, respectively, are connected to the first inputs of the AND elements, the outputs of which are connected to the single inputs of the Memory elements, and the other inputs of the AND elements to the additional polling pulse generator. The bullet input of each memory element is connected to the priority output of the final signal selection priority circuit and through an inverter with an indicator of the arrival of signals.

Such an embodiment of the device allows expanding its fuctional capabilities.

FIG. 1 is a block diagram of the device described; in fig. 2-functional signal cell switching circuit.

The device contains a signal sensor 1, signal cells 2 with inputs 3, signal selection priority circuit 4, elements "And 5 and 6, elements" Memory 7, elements "Prohibition 8 and 9, bar 10, no signals, bar 11 polling, driver 12 a pulse of dew consisting of a button 13 and a generator of 14 pulses, an inverter 15, a signal arrival indicator 16, an encoder 17, a digital indicator 18, and an ia source 19.

If there are no abnormal signals from sensors 1, then the signal from voltage source 19 is transmitted through all signal cells 2 and arrives at pin 10 of no signals. Signals at information outputs of 20 priority selection schemes,

0 outputs of the 21 elements “Memory 7, the output of the encoder 17 and the digital indicator 18 are missing. When, for example, a signal is sent from the i-th sensor 1, it through the element “Ban 8” enters the information input 22 of the circuit 4 of the priority signal selection, the priority input 23 of which has already received a signal from the voltage source 19, indicating the absence of signals from sensors 1 with a higher priority, i.e., with a number less than i. At the same time, the signal from the information Horo) of input 22 of the priority selection scheme prohibits the translation of the signal from priority input 23 to the priority output 24 of the i-th and subsequent signal cells. The signal from the bus 10 of no signals is removed and, after inversion by inverter 15, triggers the indicator 16. At the same time, signals appear at both inputs of the “AND 6 t-th signal cell 2”. As a result, a signal appears at the information output 20, which, after passing the encoder 17, is supplied as a code to a digital indicator 18.

If then other signals are received from the sensors, then out of several signals, only the signal from the parameter sensor with the highest priority passes through the encoder 17. At the same time on the priority output 24 of the signal cell 2, corresponding to the parameter with the highest priority, the -signal is absent. Then there are no signals and on. one of the inputs of the elements “AND 6 of all subsequent signal cells 2, which blocks the passage of 17 signals with a lower priority to the encoder. If the operator needs to determine all the parameters that were rejected, then after pressing button 13 on the control panel, the generator 12 of the polling pulse outputs a pulse from the generator 14 to the polling bus 11. In this case, the signals are fed to the inputs of the 25 "And 5 elements of all the signal cells 2. However, the signal at the input 26 of the element" And 5 will only be at the t-th signal cell 2 with the highest priority, therefore the element. "AND 5 J-th signal cell generates a signal to the single input 27 of the element" Memory 7, which enters the mode of the signal at the output 21. This signal enters the prohibitory input of the element "Ban 8 and removes the signal from the information input 22 of the priority 4 of choice. Then the signal is also removed from the input of the element "AND 6 and the prohibiting input of the element" Ban 9. As a result, a signal appears at the priority output 24 of this signal cell 2, and a signal is received from information output 20. If signals are received from subsequent cells, the closest to the t-th signal cell outputs a signal to the encoder 17 and the digital indicator 18. The next time you press the button 13, the code of the next Parameter with a deviation is displayed similarly. After polling the last parameter with a deviation, the priority signals from the outputs 24 of all subsequent signal cells 2 are passed to the bus 10 without any signals. As a result, at the zero inputs of the 28 elements, Memory 7 of all signal cells 2, a signal appears that causes the elements of Memory to go to a non-response state.

signal at their output. The signals from the prohibitory inputs of the elements are then removed. Ban 8 is in the signal cells 2 corresponding to the parameters having deviations. Thus, the device comes to the descended state and transmits only the signal with the highest priority to the encoder. In particular, if only one parameter has a deviation from the norm, then only one signal comes from the sensors and after pressing

button again displays the code of the same parameter.

Subject invention

A device for automatic control of parameters, comprising sensors of signals whose outputs are connected to the inputs of an encoder connected to a digital indicator via appropriately connected serially, elements of AND, Prohibition, Memory, and indicator of signal input, characterized in that in order to extend the functionality, the outputs of the sensor signals

connected to the signal input of the “Restriction” elements whose outputs are connected to the information inputs of the corresponding priority signal selection circuits, and the inhibiting inputs with the outputs of the corresponding memory elements, information outputs of the priority signal selection circuit, respectively, are connected to the first inputs of the OR elements which are connected to the single inputs of the elements “Memory, and

other inputs of the AND elements — with an additional polling pulse shaper; the zero input of each Memory element is connected to the priority output of the terminal signal selection priority circuit and through an inverter with a signal input indicator.