SU390549A1 - ALL-UNION I - Google Patents

Description

one

Investigation relates to the field of telemechanics and can be used to collect discrete information from sensors for transmission to a data processing device or to a computational computer.

Known multichannel devices for collecting discrete information containing a switch made in the form of a rectangular matrix of diode current switches with an input resistor connected to two diodes connected respectively to horizontal and vertical buses of the matrix and an output diode connected to the output bus of the switch matrix, amplifiers, the outputs of one of which are connected to horizontal buses, others to the vertical buses of the matrix, and the inputs to the corresponding outputs of the control unit, one of the inputs to torogo connected to the output line of the matrix switch, and changing information determining nodes.

In these devices, a cyclic or address onros of all sensors is performed, and the switching speed is chosen so as to eliminate the loss of information due to its change in the period between the two calls of the device to this sensor.

With such an organization of work, there are drawbacks, since information is also transmitted to the processing device when

The AI of one of the sensors did not change its state. nn In addition, this leads to an increase in the amount of data that cannot be downloaded from a device for collecting information to a device for processing it, and an increase in the time spent by the PSU on receiving information from a single sensor.

These disadvantages can be eliminated if you need to use such a device for collecting discrete information from sensors, in which data is transmitted to the information processing device only when there is a change in the output signals of at least one of the sensors. However, for the failure of such devices, a large amount of used equipment is required, due to the need to memorize the previous information at the outputs of all sensors. This reduces the effectiveness of these devices.,

The proposed device is characterized in that in order to reinforce the device, the inputs

one of the information change detection nodes is connected to horizontal buses, the others are connected to the vertical buses of the matrix, and their outputs are connected respectively to each other and connected to

control unit inputs.

The drawing shows a diagram of a multichannel device for collecting discrete information.

The proposed device contains inputs 1 for signals from sensors, switching elements and diode current switches 2, input resistor 3 switching element, diodes 4 switching element, output diode 5 switching element, horizontal selection bus 6, vertical selection 7, output bus 8, matrix selection amplifiers 9, node 10 for determining change of information in a row or column of a matrix that forms the parity of a sequentially incoming code and generates a parity change signal for two successors s poll, the control unit 11, communication unit 12 with the information processing device or HPA and inputs and outputs signals 13 for communication with the information processing apparatus or control a computer.

The device works as follows.

From the beginning, signals from the control unit // through amplifiers 9 are connected to the inputs of horizontal buses 6 only, which permits reading of information from sensors that are connected to switching elements connected to these buses. The read information is transmitted via vertical buses 7 to nodes 10 for determining the change in input information, where the parity of information from sensors connected to this bus is generated and stored.

Then, using the same nodes 10, this information is compared with the results of the previous horizontal tire survey. After that, when the results coincide, the same operations are repeated when the interrogation signals are applied to the inputs of each of the vertical tires. If the results of the current survey coincide with the results of the previous survey of vertical tires, go back to the survey of horizontal tires.

However, if during the performance of any comparison operation the results do not coincide with the previous ones, which indicates a change in information at the sensor outputs, then

a signal is generated that initiates a call to the information processing device or yBN to the device for collecting discrete information. This signal transmits the status of all sensors to the processing unit. Next, the information collection device proceeds again to the input signal polling mode described above. This mode of operation of devices allows

to carry out an adaptive mode of transmitting information from the object, which reduces the amount of data transmitted to the information processing device and reduces the time spent by the latter for processing information from

sensors.

The specified adaptive mode of operation of the device in comparison with the known devices for collecting information is achieved by insignificant hardware costs,

since it is necessary to enter nodes in the device only for each horizontal and vertical tire, and not for each sensor.

Subject invention

A multichannel device for collecting discrete information, containing a switch, made in the form of a rectangular matrix of diode-current switches with

an input resistor connected to two diodes connected to the horizontal and vertical buses of the matrix, and to an output diode connected to the output bus of the switch matrix, amplifiers, the outputs of one of which are connected to the horizontal buses, others to the vertical buses of the matrix, and the inputs to the corresponding outputs of the control unit, one of the inputs of which is connected to the output

the bus of the switchboard matrix, and information change detection nodes, characterized in that, with a device simplification slot, the inputs of one of the information change definition nodes are connected to horizontal

buses, the inputs of the others to the vertical buses of the matrix, and their outputs are connected respectively to each other and connected to the inputs of the control unit.

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