SU408363A1 - VPT5 ShchtShp ^^: ^ - Google Patents

Description

one

This invention relates to telemechanics.

A device for telecontrol and remote signaling (TU - TS) of distributed controlled points (CP) is known, which contains a clock generator at the control room (DP), the output of which is connected to the input of the address code encoder and remote control commands connected to the input of the transmitter, the signaling unit and the receiver , and at each controlled point there is an object sensor, the output of which is connected to the input of the encoder, to which the input of the transmitter control key and the input of the telecontrol unit are connected.

However, the known device has insufficient speed and reliability. This is due to the transmission of television signals from all control stations to the DP continuously in cyclic mode, which increases the transmission time of the new signal, and also increases the probability of the appearance (albeit briefly, for the cycle time) of a false signal on the DP.

In addition, if the monitored point device is damaged, the total number of signals on the DP will decrease, and the transmission time of the new signal from the operable monitored items remains the same, i.e., the average signal transmission rate decreases; switching on the frequency transmitter by any control for a long time (as a result of damage to the remote control device of this control) causes a disruption in the operation of the entire remote control system due to the occupation of the frequency channel by one monitored point.

The invention is an increase in the speed and reliability of the device.

For this control station, an information availability detection unit and a communication channel control unit are installed, and an information availability detection unit and a security unit are installed at the controlled point.

the transmitter from long and continuous operation, and at the control room the receiver output is connected to the input of the control units of the communication channel and detecting the presence of information, and one of the outputs of the detection unit

availability of information and the output of the control unit of the communication channel are connected to the input of the address code coder and remote control comaid, and another output of the information presence detection unit is connected to the input of the tele-alarm unit, and at the controlled point the output of the object sensor is connected to the input of the information presence detection unit, output which is connected to the transmitter, the output of the control key and the transmitter is connected

to the input of the protection of the non-distributor from long-term continuous operation, the output of which is connected to the input of the key. The drawing shows a block diagram of the device. The device for telecontrol and remote signaling of distributed monitored points contains DP and several control stations; AC contains frequency transmitter 1, encoder of address code and telecontrol commands 2, clock 3, frequency receiver 4, television signaling unit 5, communication control unit 6, block you presence of information 7. KP contains a frequency receiver 8, an address code and a command decoder 9, a telecontrol unit 10, a television signal encoder 11, a control key 12, a frequency transmitter 13, primary sensors of signals 14, block you neither the availability of information on the gearbox 15 and the protection unit from the long-term continuous operation of the transmitter gearbox 16. The device operates as follows. Under the action of the generator 3, the distributor of the address code and remote control commands 2 on the PD automatically generates the signals of the address code of one of the CP and then the signals for polling the state of objects in this CP. These signals modulate the carrier frequency / 1 of the frequency transmitter 1. The modulated frequency / i is received by frequency receivers 8 at all KPs. On the called KP (to which the given address code corresponds), the decoder of the address code and commands 9 via the key 12 connects the frequency transmitter 13 to the communication channel. The KP does not have a clock generator, therefore, to generate information pulses from the KP to the DP, the pulses from parties dp. In the absence of new information on the called KP, in response one of the last pulses in the address code series, the block for detecting the presence of information on KP 15 forms a pulse in phase with a pulse from the DP. The generated pulse modulates the carrier frequency / 2 of the transmitter 13. At the DP, the modulated tracks are perceived by the receiver 4, at the output of which a pulse appears that corresponds to the absence of information on the called KP. This pulse arrives at the input of the block for detecting the presence of information 7, as a result of which the distributor of the address code 2 switches to the formation of the address code of the next KP. Thus, in the absence of information on the control unit, only the address codes of each control unit are received alternately on the communication channel from the control center side, and the response signal about the absence of information is also used to monitor the control panel and the communication drop. In this case, the full cycle of polling all KPs is determined by the formula Hz k.aa shchzhsz. where Address is the transmission time of the address code of one KP, and .V is the number of KP. In the known device, after pulses of the code of the address of each control center, pulses are sent to the communication channel to read information about the state of objects in the control panel, regardless of the presence or absence of new information, which leads to an increase in the full cycle of polling all control points and, consequently, unjustified increase the time of transmission of new information. So, even with low-volume remote signaling, when the transmission time of information read pulses is equal to the transmission time of address code pulses, the full cycle time is twice as long as in the proposed device, i.e. / cycle (address L bc read) 2 Addresses of a larger volume this difference is even more significant. In addition, in the proposed device, which has blocks for detecting the presence of information on CP and DP, the time of using the communication channel to transmit information from CP to PD (this transmission is only available if information is available) is reduced, which accordingly reduces the probability of false information due to interference in the communication channel. Each controlled point is connected to a common communication channel from the control station and the control center only for the time required to transmit information from this control station. The inclusion of the transmitter 13 called KP occurs at the time of receiving its address code. At the same time, the transmitter of the previously operated gearbox is turned off. The command to disable a running CP is to receive someone else’s address code. If for any reason the transmitter KP is not disconnected from the communication channel, then this trip will be forced by the protection unit 16 from the long-term continuous operation of the transmitter KP. The protection unit operates on the time relay principle. The protection disconnects the transmitter from the communication channel after the time required to transmit all information from this control unit, if the transmitter does not switch off due to reception of the address code of another control unit. In the absence of a protection unit from long-term continuous operation of the transmitter, a serious damage to the gearbox or its communication channel, causing long-term transmitter operation, causes a malfunction of all serviceable gearboxes due to the channel being damaged by gearboxes. The device TU - TC under certain conditions can be transferred to the mode of continuous interrogation of the state of objects at each KP, i.e., after the code of the address of each KP, information read pulses are sent to the communication channel. If, in this mode of operation, one (or several) CP is damaged, then due to the presence of block 6 of control channels on the DP, information read pulses are not sent to this CP, which automatically reduces the time for a complete polling cycle of all CPs if there are damaged CPs in the device.

In the proposed device, in addition to television signals, a transmission from a control to a DP of tele-measured code-pulse method is provided.

Subject invention

A device for remote control and remote signaling of distributed monitored points, containing a clock pulse generator at the control station, the output of which is connected to the input of the address code and remote control commands connected to the input of the transmitter, the remote signaling unit and the receiver, and the object's sensor at each controlled point connected to the input of the signal encoder connected to the output of the decoder to which the input of the transmitter control key and the remote control unit is connected, from In order to improve the speed and reliability of the device, an information detection unit and a communication channel control unit are additionally installed at the control center, and an information availability detection unit and transmitter protection unit for long-term continuous operation are installed at the controlled point, moreover, at the control room, the receiver output is connected to the inputs of the communication channel monitoring units and detecting the presence of information, one of the outputs of the detection unit

information and the output of the control unit of the communication channel are connected to the input of the encoder of the address code and remote control commands, and the other output of the information presence detection unit is connected to the input of the remote signaling unit,

and at the controlled point, the output of the object sensor is connected to the input of the block for detecting the presence of information, the output of which is connected to the transmitter, the output of the transmitter control key is connected to the input of the transmitter protection unit against continuous operation, the output of which is connected to the key input.

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