SU1283737A1 - Multichannel information input device - Google Patents

Abstract

The invention relates to computing and can be used in data acquisition and processing systems for monitoring sensors of the state of parameters. The purpose of the invention is to increase the speed of the device by optimizing the polling mode of simultaneously triggered channels. The device contains channels for monitoring the status of sensors, a decoder, a block of AND-NOT elements and a block of OR-NOT elements. Each channel monitors the status of a group of sensors (inputs). When the state of the inputs of any channel (or several channels) at its control output changes, a pulse appears through the block of OR-NOT elements at the control output of the device as. service request. In response, the computer sends the device address to the address inputs of the device (the decoder inputs), and then a positional binary code informing the computer about the numbers of simultaneously triggered channels is inserted into the information bus (information outputs) of the device. Sequentially issuing to the address inputs of the device the numbers of simultaneously acted computer channels can interrogate them in an arbitrary sequence. Thus, the device design allows in one cycle to interrogate at once all simultaneously triggered channels, 1 hp. f-ly, 1 ill. with (L

Description

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The invention relates to computing technology and can be used in data acquisition and processing systems for monitoring state parameter sensors.

The aim of the invention is to improve the speed of the device by optimizing the polling mode of the simultaneously triggered channels.

The drawing shows the functional diagram of the device.

The device contains information inputs 1, channels: 2 monitoring the status of sensors, information bus

ten

block 10 comparison. Since the first and second groups of inputs of the comparison unit 10 again receive identical signals, at the output of the unit 10, the zero signal is replaced by one. From the output of the element NOT 13, the zero signal arrives at the control input of the register 11, prohibits the overwriting of information in the register, and the control channel returns to its original state,

Simultaneously with the appearance of the zero signal at the output of the comparator block 10 when the date of the date 3 changes, the information outputs 4 devices j from the output of the element NOT 13 are unified, the block of elements AND-NOT 5, the element OR-NOT 6p the decoder 7, the control output 8 devices, address inputs 9. Each channel 2 of the state monitoring of sensors contains a block 10 of comparison, a register 11, a block of elements AND-NOT 12, an element NOT 13, a trigger 14, a control input 15 of a channel, a control output 16 of a fecal,

The information bus 3 of the device is the combination of the corresponding outputs of the block of AND-NOT blocks 5 and the outputs of the blocks of blocks 12 using the wired OR

The device works as follows.

The information inputs 1 of the device receive information from two-position sensors. In the initial state, when there is no change in the input signals, the inputs of the first and second groups of the comparison block 10 with the information inputs 1 and the outputs of the register 11 receive identical signals, therefore the output of the block 10 comparison is a single signal, at the output of the element NOT 13 there is a zero signal, which prohibits overwriting information in the register 11, At the control output 16 of the channel there is a zero signal,

If there is a change in the state of any of the monitored sensors related to this channel, the comparison unit 10 is triggered, and a zero signal appears at its output. From the output of the element NOT 13, a single signal is fed to the control input of register 11, the new information is recorded in register 11 ,, and from its output, information about the state of the sensors at a given time is fed to the inputs of the second group

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the null signal is fed to the first input of the trigger 14, from the output of which a single signal is fed to the corresponding input of the first group of block AND-NOT 5 and the corresponding input of the element OR-NOT 6, as a result of which J appears at the control output 8 of the device service request signal.

In response to the request signal from an external device, address address inputs 9 receive the address of the block of elements AND NOT 5 (device address). From the output of the decoder 7, a single signal is fed to the inputs of the second group of the I-HE 5 element block, from whose outputs to the information bus of the device 3 receives information about which channel has changed.

After determining the channel from which the service request is received, the external device supplies the address of the desired channel to address inputs 9. WITH

according to the output of the descrambler group, a single signal is fed to the control input of the corresponding channel.

45 As a result, from the outputs of the IS-12 element block, information about the state of the monitored sensors is simultaneously transmitted to the information volume 3 of the device.

50 from the trigger output 14. During the two cycles of the machine accessing the information outputs 4, a parallel code is inserted, each position of which carries information about the corresponding sensor of each channel. Moreover, O at the information output of the device corresponds to a high signal

low level input

1, and 1 - signal

block 10 comparison. Since the first and second groups of inputs of the comparison unit 10 again receive identical signals, at the output of the unit 10, the zero signal is replaced by one. From the output of the element NOT 13, the zero signal arrives at the control input of the register 11, prohibits the overwriting of information in the register, and the control channel returns to its original state,

Simultaneously with the appearance of a zero signal at the output of the comparison unit 10 when the state of the sensors changes from the output of the element HE 13 is one.

five

The null signal arrives at the first input of the trigger 14, from the output of which a single signal arrives at the corresponding input of the first group of the AND-NOT 5 block of elements and the corresponding input of the OR-NOT 6 element, as a result of which at the control output 8 of the device request service signal.

In response to the request signal from an external device, address addresses 9 receive the address of the block of elements AND-NOT 5 (device address). From the output of the decoder 7, a single signal is fed to the inputs of the second group of the block of elements AND-NOT 5, from the outputs of which information is sent to the information bus 3 of the channel in which the change occurred.

After determining the channel from which the service request was received, the external device supplies the address of the desired channel to address inputs 9. WITH

according to the output of the descrambler group, a single signal is fed to the control input of the corresponding channel.

45 As a result, the status of the monitored sensors is received from the outputs of the NES 12 block of devices 3 and the unit signal from the trigger output 14 is simultaneously removed. During two cycles of the machine’s access to the device, a parallel code appears at the information outputs 4, each the position of which carries information about the corresponding sensor of each channel. Moreover, on the information output of the device corresponds to a high signal

low level input

1, and 1 - signal

If a change in the state of the sensors occurred simultaneously in several channels 2, then the request signal from the external device reads information about the change in the channels from the block of AND-HE elements 5 in this way and determines which change occurred in the channels. The addresses of the desired channels 2 are received alternately at the address addresses of the device 9, and information on the status of the sensors in the afHx channels is output from the outputs of the corresponding blocks of the NAND 12 elements.

When information is output from the last channel 2 in which the change occurred, the control signal is removed from the output of the OR-NOT 6 element, and the device returns to the initial state. Block 10 can be executed on the K561IP2 microcircuit, register 11 on the K56ITM3 microcircuit, AND-NE 5 and 12 blocks on the K56IAHI microcircuit. The remaining elements of the device can also be performed on the K56I series microcircuits.

Thus, the device design allows for issuing a request for a computer (device address supplied to inputs 9) of the address of all channels that have been triggered between requests, after which it is possible to poll channels in an arbitrary, specified computer sequence, i.e. there is an increase in speed by optimizing the exchange mode.

Claims (2)

1. A multi-channel device for inputting information, containing channels for monitoring the status of sensors and a decoder, each of the outputs of a group of which is connected to the control input of the corresponding channel for monitoring the status of sensors, the information inputs of which are information inputs of the device, corresponding to 5 O The informational outputs of the sensor monitoring channels of the unit 11y are information outputs of the device, characterized in that, in order to improve speed, by optimizing the polling mode of simultaneously triggered sensor monitoring channels, it contains a block of AND-NOT elements and a block the elements OR NOT, the output of which is the control output of the device, the control output of each channel of the sensor state monitoring is connected to the corresponding input of the first group of the block of the NAND elements and the corresponding Leica Geosystems input of NOR elements, the output of the decoder is connected to the inputs of the second group of block-AND-NO elements, outputs of which are combined with corresponding data outputs stvuyupschmi monitoring channel state sensors decoder inputs are addressable inputs. 2. Device POP.1, characterized in that each | Control channel: sensor states contains a comparison unit, a register, a block of AND-NOT elements, a trigger and an NOT element, the output of which is connected to the first trigger input and the control input of the register, outputs which are connected to the inputs of the comparison block group, the output of which is connected to the input of the NOT element, the inputs of the first group of the comparison block are combined with the information inputs of the register, the inputs of the first group of the AND-NOT element block and are the information inputs of the channel, the second input of the Unified Trigger It is with the inputs of the second group of the block of elements AND-NOT and is the control input of the channel, the output of the trigger is the control output of the channel, the outputs of the block of elements, AND-NOT are the information outputs of the channel. 0 five 0 five 0