CN2565224Y

CN2565224Y - Power transformer anti-theft alarm using GSM short message

Info

Publication number: CN2565224Y
Application number: CN 02247657
Authority: CN
Inventors: 黄训诚; 周金生; 李万隆
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-08-08
Filing date: 2002-08-08
Publication date: 2003-08-06
Anticipated expiration: 2012-08-08

Abstract

The utility model relates to a power transformer anti-theft alarm device using GSM short messages, which relates to a power transformer anti-theft alarm device by which alarming message can be transferred through a GSM network in the method of Chinese character short messages. The utility model solves mainly the technical problems of the existing power transformer anti-theft alarm device, such as limited communication distance, short stand-by time after power-off, difficulty in concealment, difficulty in the memorization of alarming message codes. The utility model is composed of a monolithic computer system circuit 3 which serves as a core, a voltage detecting circuit 2, a sensor interface circuit 1 and a data communication interface circuit 4. The utility model has the advantages that the size is small; the concealment is easy; the standby working time can be more than 4 days after power-off; the alarm can be received with a common GSM mobile phone, the alarm communication distance can reach all the area covered by the GSM network in China, and movable receiving function is provided; the operation and maintenance costs of the overall system is low; the utility model can also be used for the anti-theft work of other electric appliances or safe boxes (doors).

Description

Use the electric power transformer anti-theft warning device of GSM short message

(1) technical field

The utility model relates to a kind of burglar alarm of power transformer, especially can use the GSM network to transmit the burglar alarm of the power transformer of warning message in Chinese character short message mode.

(2) background technology

Since the normal phase, the rural safe power supply exists three big hidden danger always: steal, the robber tears power transformer open, the robber cuts power transmission cable and the robber tears the tower material open.The power transformer of rural area and power transmission cable are owing to lack effective safety prevention measure, and frequent stolen person steals destruction.Forming large tracts of land has a power failure for a long time.Directly, indirect economic loss is huge.Local resident's production, life have directly been influenced.

At present, widely used electric power transformer anti-theft warning product adopts the discrete electronic component to form mostly.The operation principle of its warning message transmission is: earlier alarm content is carried out digital coding, use short wave radio station launching code warning message then.The recipient adopts short wave radio station to receive, through output alarm signal after the decoding processing.There is following defective in aforesaid way: 1, and each warning extension set need take a short-wave band channel, has taken a large amount of frequency resources.According to China's pertinent regulations, can therefore be restricted for the short frequency resource-constrained of reporting to the police and using in same place installable warning extension set quantity, can not satisfy on-the-spot needs sometimes; 2, because the radio transmitted power of warning device is bigger, the complete machine electrical source consumption is big in addition, so outage back stand-by time is very short, mostly is in 1 to 2 hour, surpasses this period promptly to lose warning function; 3, the warning small product size is big, and communication distance is limited, generally mostly is 5 to 15 kms.Because the required sending and receiving antenna of short frequency that adopted is grown (mostly being 1 to 2 meter), be difficult for hiddenly, the thief is more easily found and destruction makes it lose warning function; 4, the digital coding modes that adopt are difficult for memory more on the display mode of warning message, and intuitive is poor.Owing to above-mentioned reason makes service time, quantity and the scope of these anti-theft product be restricted, anti-theft effect descends, and also easily produces and fails to report and report by mistake.

(3) summary of the invention

The existing product communication distance is limited in order to overcome, outage back stand-by time is short and be difficult for hidden deficiency, and it is the electric power transformer anti-theft warning device of means of communication with the GSM short message that the utility model provides a kind of.

The technical scheme that its technical problem that solves the utility model adopts is: the employing Single Chip Microcomputer (SCM) system is a core control system, be provided with the identical voltage detecting circuit of three line structures, three PIO ports that the one end is corresponding with Single Chip Microcomputer (SCM) system respectively are electrically connected, and the other end is electrically connected with the binding post of the three-phase output voltage that can be connected power transformer.Be provided with a GSM mobile handset data communication interface circuit, the communication port (RXD of one end and Single Chip Microcomputer (SCM) system; TXD) be electrically connected, the other end can be electrically connected with the data communication interface of the GSM mobile handset with short message function.Other is provided with 2 sensor interface circuitries that structure is identical, and the one end connects by the corresponding PIO port with single-chip microcomputer of U5, and the other end is electrically connected with the binding post that can be connected vibrations, motion sensor signals.

The beneficial effects of the utility model are: device volume is little, and the wireless transmission antenna is lacked (2 to 3cM) and do not exposed, and is convenient to hidden; The complete machine electrical source consumption is little, Overall Power Consumption≤6mW, and outage back standby working time reached more than 4 days; This device sends warning message in the mode of simplified Hanzi short message, and the information content is clear and definite, directly perceived; The quantity of the installable warning device of the same area can be unrestricted; Reporting to the police receives available common GSM mobile handset reception, and the alarm communication system distance can far reach all regions of China GSM network coverage and have the function of removable reception.This device can not only be used for the burglar alarm of transformer, but also is the ideal product of cable, safety cabinet (door) and household electrical appliance burglar alarm.Owing to saved the extensive work and the expense of communication base station construction, maintenance, made whole system operation and the maintenance cost extremely low.

(4) description of drawings

Fig. 1 is the theory diagram of the utility model burglar alarm;

Fig. 2 is the circuit theory diagrams of the utility model burglar alarm;

Fig. 3 is the circuit theory diagrams of the utility model burglar alarm data communication interface circuit.

1. sensor interface circuitries among Fig. 1,2. voltage detecting circuit, 3. microcontroller system circuit, 4. data communication interface electricity Road, 5. auxiliary power circuit, 6. sensor input signal binding post, 7. power transformer three-phase voltage input signal terminals Son 8. removes the data communication interface of the external GSM mobile handset with short message function. When thievery took place, the thief was The safety power supply of disconnecting transformer at first of self, and then transformer implemented dismounting, at this moment, the three-phase of transformer Output voltage is zero; If transformer is disassembled or moves, the then output state change of can reversing of vibrations, movable sensor. This A little signals of telecommunication are successively sent into microcontroller system circuit 3, single-chip microcomputer by voltage detecting circuit 2 and sensor interface circuitry 1 respectively Circuit system 3 makes an immediate response according to the program of setting, and successively sends to preassigned mobile phone by data communication interface circuit 4 Content is two short messages of " outage of XX transformer " and " the XX transformer is moved ", and the related personnel receives note Behind the breath, can according to circumstances make a concrete analysis of processing.

Employed integrated circuit important technological parameters is described as follows among Fig. 2.

Numbering: model: function declaration

OPT5 TIL117 photoelectrical coupler

OPT6 TIL117 photoelectrical coupler

OPT7 TIL117 photoelectrical coupler

U1 MC14069UB hex inverter

U2 62256 static storages

U3 89C52 single-chip microcomputer

U4 SN74HC373 8D latch

U5 SN74HC373 8D latch

U6 MC78L05C three terminal regulator

The erasable memory of U7 X5045 electricity

U8 MC14069UB hex inverter

U9 MC14053B 3 alternative simulant electronic switches

The operation principle brief description.

Sensor interface circuitry 1, its effect are the output states of monitoring external sensor.The groundwork process is: when external sensor moves, and its output contact closure, capacitor C6, C7 is by R18, and R19 discharges, thereby makes C6, the current potential of C7 is reduced to low level rapidly by height, and this potential change is sent to the PIO port of the correspondence of Single Chip Microcomputer (SCM) system through U5.Voltage detecting circuit 2, its effect is the three-phase output voltage of monitoring transformer, the groundwork process is when mutually or when all being lower than preset threshold of the three-phase output voltage of transformer, the input current of photoelectrical coupler OPT descends and its output current potential is descended, and then to make the current potential of the reversed-phase output of U3 be high level by low transition, and this potential change is sent to the PIO port of the correspondence of Single Chip Microcomputer (SCM) system through U5.The effect of microcontroller system circuit 3 is to be responsible for the signal of voltage detecting circuit 2 and sensor interface circuitry 1 is monitored, analyzes and handle it and carries out.The groundwork process is, when voltage detecting circuit 2 or sensor interface circuitry 1 generation jump in potential, microcontroller system circuit 3 starts routine analyzer immediately concrete condition is carried out analysis and judgement, start the short message that mobile phones send related contents by data interface circuit 4 after reaching a conclusion, and can send to one or more mobile phone one or many according to setting in advance.The effect of data communication interface circuit 4 is data channel of setting up Single Chip Microcomputer (SCM) system and mobile phone, makes the various digital informations of two-way transmission between Single Chip Microcomputer (SCM) system and the mobile phone.Auxiliary power circuit 5, its effect provides the charge power supply of working power of the present utility model and battery of mobile phone, and this device uses the work about electric power that accessory power supply provides under the normal condition, and through D9, P19 is by the powered battery of mobile phone during power failure.

Fig. 3 data communication interface circuit is by U1D, U1E, and U1F, U1C, U9, BG1, BG3, Z1, R24, R25, R26 and binding post P12, P15, P16, P19, P20 constitutes.The positive pole of D9 links to each other with binding post P19, negative pole links to each other with VCC, the collector electrode of BG1 links to each other with binding post P12, emitter links to each other with V+, ground connection after base stage is connected with BG3, the base stage of BG3 links to each other with the control mouth K12 of Single Chip Microcomputer (SCM) system, and binding post P15, P16 and U1 meet serial communication port TXD, the RXD of Single Chip Microcomputer (SCM) system after the U9 series connection.

(5) embodiment

Sensor interface circuitry: this partial circuit is by R16, R17, and R18, R19, R4, C6, C7 and U5.8D latch constitute.R18, the end of R19 is electrically connected with the sensor input signal binding post, the other end respectively with corresponding C6, the positive pole of C7 connects, and and R16, the P13 of R17 and U5, P8 parallel connection.Resistance R 16, the span of R17 are 15K Ω to 51K Ω, and resistance R 18, the span of R19 are 1.5K Ω to 5.1K Ω, and concrete value principle is that it is neglected the length of external circuit greatly and decides also coincidence formula: R17/R19=R16/R18=10.

Voltage detecting circuit: this partial circuit is by D2, D3, and D4, R1, R2, R3, OPT5, OPT6, OPT7 and U8 constitute.The positive pole of D2, D3, D4 diode respectively with corresponding binding post P3, P1, P2 are electrically connected, the negative pole of D2, D3, D4 is respectively through the resistance R 3 of correspondence, R1, R2 and photoelectrical coupler OPT5, OPT6, OPT7 connects.Resistance R 3, R1, the span of R2 is 370K Ω to 510K Ω, when concrete value principle is the alternating voltage that applies on the binding post=95V, output dc voltage value=3V ± 0.1 of photoelectrical coupler.

Microcontroller system circuit: this partial circuit is by the U2. static storage, the U3. single-chip microcomputer, and the U4.8D latch, the erasable memory of U7. electricity is formed.U3. in parallel after the data wire of single-chip microcomputer and the U4.8D series of latches with U2. static storage and the erasable memory of U7. electricity.U2. should note selecting operating voltage in the selection of the device specification of static storage, the U7. erasable memory of electricity and U3. single-chip microcomputer is the device of 3V.

Requiring D9 in device parameters in the data communication interface circuit 4, the selection of specification is Schottky diode, β value 〉=50 of BG1, BG3 and conducting saturation voltage drop≤0.2V.

Auxiliary power circuit: this partial circuit is by the TR1. power transformer, D1, and D5, D8, C2, C9, C17, C19 and U6 constitute.The secondary end of TR1 meets D5 respectively, and the positive pole of D8 connects U6. three terminal regulator P3 pin after D5, the negative pole of D8 compose in parallel full-wave rectifying circuit and D1 connects, and the output of U6 links to each other with VCC.Require the specification of TR1. power transformer to be: capacity=3VA; No-load voltage ratio=250V:2X10V.

Claims

1. electric power transformer anti-theft warning device that uses the GSM short message, it is characterized in that: be provided with voltage detecting circuit (2), three PIO ports that the one end is corresponding with microcontroller system circuit (3) respectively are electrically connected, and the other end is electrically connected with the binding post (7) of the three-phase output voltage signal that can be connected power transformer; Be provided with a GSM mobile handset data communication interface circuit (4), communication port (the RXD of one end and Single Chip Microcomputer (SCM) system, TXD) be electrically connected, the other end can be electrically connected with the data communication interface (8) of the GSM mobile handset with short message function, other is provided with 2 sensor interface circuitries (1) that structure is identical, the corresponding PIO port with microcontroller system circuit (3) of one end connects, and the other end is electrically connected with the binding post that can be connected vibrations, movable sensor (6).

2. according to claim 1 described a kind of electric power transformer anti-theft warning device that uses the GSM short message, it is characterized in that described data communication interface circuit (4) by U1D, U1E, U1F, U1C, U9, BG1, BG3, Z1, R24-26 and binding post P12, P15, P16, P19, P20 constitutes, be used to set up the data channel of Single Chip Microcomputer (SCM) system and mobile phone, make the various digital informations of two-way transmission between Single Chip Microcomputer (SCM) system and the mobile phone.

3. according to claim 1 described a kind of electric power transformer anti-theft warning device that uses the GSM short message, it is characterized in that described sensor interface circuitry (1) by R16, R17, R18, R19, R4, C6, C7 and U5.8D latch constitute, and its effect is the output state of monitoring external sensor.

4. according to claim 1 described a kind of electric power transformer anti-theft warning device that uses the GSM short message, it is characterized in that described voltage detecting circuit (2) by D2, D3, D4, R1, R2, R3, OPT5, OPT6, OPT7 and U8 constitute, and its effect is the three-phase output voltage of monitoring transformer.

5. according to claim 1 described a kind of electric power transformer anti-theft warning device that uses the GSM short message, it is characterized in that described microcontroller system circuit (3) is by the U2. static storage, U3. single-chip microcomputer, the U4.8D latch, U7. electric erasable memory is formed, in parallel with U2 and U7 after U3 connects with U4, its effect is to be responsible for the signal of voltage detecting circuit (2) and sensor interface circuitry (1) is monitored, analyzes and handle it and carries out.