KR910008911A - Safety monitoring device and method using power line - Google Patents

Abstract

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Description

Safety monitoring device and method using power line

As this is a public information case, the full text was not included.

1 is a block diagram of the present invention.

2 is a detailed circuit diagram of the steady state repeater in FIG.

3 is a detailed circuit diagram of the central controller in FIG.

Claims (9)

In the automation system, a pair of power lines (L1, L2) for supplying AC power, a plurality of sensors (S1-Sn) for detecting a safety state of a plurality of objects, respectively, and the sensors (S1) through a power line A central controller 100 which receives safety status information on the object detected by -Sn and controls the received information, and is commonly connected to a power line and correspondingly connected to the plurality of sensors S1-Sn. It consists of a plurality of safety state repeaters (11l-11n) for supplying the safety state information on the object detected by the sensor under the control of the central controller 100 through the power line to the central controller 100 via the power line. Safety detection device characterized in that. The first address generator according to claim 1, wherein the safety state repeaters (11l-111n) are composed of a plurality of switches (SW1-SW12) and resistors (R1-R12) to designate a first unique address for the object. And the call address received through the power lines L1 and L2 are analyzed by the sensor S1 when the same address as the unique address applied from the first address generator 200 is input. A first microcomputer 210 generating safety state data using a safety state of a target object and a unique address supplied from the first address generator 200 and then transmitting the power state through power lines L1 and L2; It is connected between the microcomputer 210 and the power lines (L1, L2) and demodulates the analog modulation signal received from the power lines (L1, L2) and supplies it to the first microcom (210) or draws in from the first microcom (210) First modulation and demodulation unit 220 for modulating the safety state data to be transmitted to the power line (L1, L2) And a transformer TF1 and two capacitors C1, connected between the first demodulation unit 220 and the power lines L1 and L2 to relay the demodulation unit 220 and the power lines L1 and L2. A first matching unit 230 formed between the first matching unit 230 and the first microcomputer 210 and the sensor S1 to transfer the output of the sensor S1 to the first microcom 210. ZD2), an input unit 240 including an inverting element I1, a photocoupler PC2, two capacitors C4 and C5, and five resistors R16 to R20, the power lines L1 and L2 and the first A comparator A1 and a photocoupler (A1) and a photocoupler (1) are connected to each other to detect the zero point of the induced power supply on the power lines L1 and L2 so as to synchronize data when the first microcom 210 transmits and receives data. PC 1), a capacitor (C2) and Zener diode (ZD1), three diodes (D1-D3) and resistors (R4, R5) consisting of a first zero detection unit 250, characterized in that Value. The safety monitoring apparatus according to claim 2, wherein the safety state data is transmitted on a leading edge period of the waveform of the AC power induced on the power line. The safety monitoring device according to claim 3, wherein the stable state data comprises data start information and a unique address of a zone, a unique address of a target object, status information of a target object, parity information, and data end information. 5. The second address generator of claim 4, wherein the central controller 100 comprises a plurality of switches SW13-SW16 and resistors R21-R24 to generate a second unique address for each zone of the objects to be monitored. And control data using the second unique address supplied from the second address generator 300 and supplied to the power lines L1 and L2 and drawn from the power lines L1 and L2. An analog type received from the power lines L1 and L2 by being connected between the second microcom 310 and the second microcom 210 and the power lines L1 and L2 that analyze the safety state data to generate alarm control data. A second demodulation unit 320 for demodulating and supplying a modulated signal to the second microcom 210 or modulating the control data input from the second microcom 210 to the power lines L1 and L2; It is connected between the modulation and demodulation unit 320 and the power lines (L1, L2) and the modulation and demodulation unit 320 and the power line (L1, In order to relay L2), a second matching unit 230 including a transformer TF2 and two capacitors C6 and C7 and a zero point of the induced power supply on the power lines L1 and L2 are detected. The second zero detector 340 for synchronizing the data transmission and reception of the second microcomputer 310, the memory 350 storing the voice information for alarm, and the authorization time from the second microcom 310 A voice synthesizer 360 for reading and synthesizing alarm voice information stored in the memory 35 by control data and generating a voice synthesized signal, and an amplifier A2 for amplifying the output of the voice synthesizer 360. And a filter (370) for filtering the output of the amplifier (A2) and transmitting the same through a speaker (SP). 6. The safety monitoring apparatus according to claim 5, wherein the call data is carried on a half-cycle of the last half of the waveform of the AC power induced on the positive power lines (L1, L2). The safety monitoring device according to claim 6, wherein the call data comprises data start information and a unique address of a zone, a unique address of a target object, status information transmission request information, parity information, and data end information. The safety monitoring apparatus according to claim 6, wherein the call data comprises a start address and a unique address of a zone, a unique address of a target object, response information on status information, parity information, and data end information. Power line pairs L1 and L2 for supplying AC power, a plurality of sensors S1-Sn for detecting a safe state of a plurality of target objects, respectively, and the sensors S1-Sn through a power line. A central controller 100 that receives safety status information on the detected object and controls the received information; and a central controller 100 connected to a power line and correspondingly connected to the plurality of sensors S1-Sn. Safety of the safety monitoring device provided with a plurality of safety state repeaters (11l-11n) for supplying the safety state information on the target object detected by the sensor under the control of the 100 to the central controller 100 via a power line. In the monitoring method, the central controller 100 sequentially and repeatedly sets a plurality of target objects to be monitored one by one and repeats the area address and the unique address of the set target object in order to call the set safety state repeater. The first process of transmitting the call data including the information requesting information through the power line pairs L1 and L2, and the safety state repeaters 11l-11n are performed by the first process. Safe state including the safety state for the object and the unique address for the area and the object read through the connected sensors (S1-Sn). A second process of supplying data to the power line pairs L1 and L2, and the central controller 100 performs safety state data induced on the power line pairs L1 and L2 by the second process after performing the first process. The third step of checking the area unique address on the safety status data by checking the number and then analyzing the safety status data if it is one's own, and notifying the operator of the information message about the abnormal status if there is an error in the object. Made up of The method of claim. ※ Note: The disclosure is based on the initial application.