CN2216016Y - Calling-for-help and finding system for robbed vehicle - Google Patents

Abstract

The utility model relates to a wireless calling-for-help and finding system, which is arranged on an automobile and which transmits in time a wireless calling-for-help signal and receives a remote-control command when the automobile is stolen. The utility model is assembled in a metal casing, a single-frequency transmitting circuit and a single-frequency receiving circuit are controlled simultaneously by a micro-computer control circuit, and the work program and the calling-for-help signal of the system are both pre-stored in a micro-computer. The serial input and output ports of the micro-computer conduct the transmission of a digital signal with the receiving and the transmitting circuits, and the ports (P1.1), (P1.2) of the input and output port are used for conducting the switching control of receiving and transmitting circuits and an engine ignition, namely the power supply state. The calling-for-help signal comprises a guiding code, an automobile apanage code and an automobile safety code.

Description

Calling-for-help and finding system for robbed vehicle

The utility model relate to a kind of power actuated vehicle be robbed, under the stolen or unforeseen circumstances, can send wireless calling help signal and can receive public security department's telecommand to local public security department safely rapidly, the guiding police car comes to succour, looks into dirty wireless calling for help recovering system.

The anti-misfortune of present known power actuated vehicle, robber's radio alarming device mainly contain two big classes: a kind of is to adopt GPS(U.S. stellar-based global-positioning system) technology, can obtain the location information of vehicle of reporting to the police accurately and reliably, and can implement remote control the warning vehicle; Another kind of is that the employing phone is reported a case to the security authorities, the remote control alarm mode, taking place that vehicle is robbed, will report a case to the security authorities to public security organ by the driver after the stolen situation, by public security department to be robbed, remote annunciator emission remote control coding instruction on the stolen vehicle, make its parking and send sound and light alarm.Last class is not easy to popularization and application because car-mounted device costs an arm and a leg.Back one class is then not too practical, because of robbing the car incident remote area in suburbs of mostly occurring, is difficult to find phone in time to report a case to the security authorities, and the vehicle for the treatment of to be robbed after public security department receives the report has rolled effective range of control away from already.

The purpose of this utility model provides a kind of wireless two-way warning safe, networking in China in the future, it can not only report to local public security department with calling help signal (comprising preamble code, vehicle region code, vehicle safety code) immediately in breathless mode, and can receive remote control that public security department or police car send and start and report to the police and the alert instruction that disappears, implement to force to stop, the rescue of coming of guiding police car.

This uses later-model purpose to be achieved in that with a single-frequency transmission circuit of a microcomputer circuit control and a single-frequency acceptor circuit (frequency is identical), job procedure and calling help signal all are stored in the micro computer in advance, are operated in the reception wait state at ordinary times.When touching warning button time length, the driver exceeded for three seconds (avoiding flase alarm) or receive remote control and start alarm command (confirming correct words) through inference elimination, micro computer transfers to carry out send-receive program, transmission circuit, acceptor circuit alternation at this moment.During launching, micro computer accesses the calling signal that pre-deposits and sends the transmission circuit emission that repeatedly circulates to.Reception period is mainly and receives the telecommand that public security department or police car send, after receiving the pressure cutoff command, relay outage of microcomputerized control, the a pair of vehicle ignition that is serially connected in is that the open contact of current supply circuit disconnects, and makes engine dies (also can cause such result if the ruffian cuts off system power supply).Disappear after the alert instruction when receiving remote control, micro computer again then carry out to receive and wait for job procedure, each control end resets.

There are two auxiliary devices in system: ground monitoring platform and in-vehicle signal tracking device.The ground monitoring platform is installed in command centre of public security bureau, and in-vehicle signal tracking device is installed on the squad car.The function of ground monitoring platform is: identification automatically, reception alerting signal, the information such as license plate number, vehicle, body color, name driver, affiliated ground title that translates the warning vehicle shows on monitoring device, sends warning with acousto-optic to the attendant simultaneously; The archive information of this car of printer output; The orientation that shows this car on electronic chart or the direction arrow plate.It can also force to stop or remove the warning telecommand to the emission of warning vehicle; Start alarm command to stolen or missing vehicle emission remote control.The function of in-vehicle signal tracking device is: according to the preamble code in the calling help signal, indicate the direction position of calling for help vehicle, the guiding police car is searched for, is followed the tracks of calling for help vehicle.It also can stop or the alert telecommand that disappears to calling for help vehicle emission remote control.

Owing to adopt such scheme, solved the problem that is not subjected to geographic restriction, reports to the police in time, protects the driver, follows the trail of rescue and recover fast; Owing to adopt microcomputerized control engineering reliability height, the cost of large-scale popularization application low, meet China's actual conditions; Make things convenient for trans-regional network, form the vehicle guard net that covers the whole province and the whole nation.

The utility model is described in further detail below in conjunction with accompanying drawing.

Fig. 1 is the functional block diagram of utility model.

Fig. 2 is system's transmission circuit schematic diagram.

Fig. 3 is system's microcomputer control circuit schematic diagram.

Fig. 4 is system's acceptor circuit schematic diagram.

Fig. 5 is system supplymentary device-ground monitoring platform schematic block circuit diagram.

Fig. 6 is system supplymentary device-signal tracking device circuit functional block diagram.

In Fig. 3, the core of microcomputer control circuit is a micro controller system (as 80C31), job procedure and calling for help information code all are stored among the memory EPROM in advance, after powering up to circuit or resetting, micro controller system is carried out to receive and is waited for job procedure, micro controller system P1.1 pin output high level, P1.2 pin output low level, behind open collector driver circuit (A11), make relay J 1 energising, the J2 outage.The a pair of open contact of J1 is serially connected in the engine ignition system current supply circuit; The a pair of normally closed contact of J2 is serially connected in the current supply circuit of acceptor circuit, a pair of open contact is serially connected in the current supply circuit of transmission circuit, this moment is all closed because of a pair of normally closed contact of a pair of open contact of J1 and J2, so engine ignition system and acceptor circuit all can get electric normal operation, just transmission circuit is not worked because of the power supply access failure, receive the various signals that come by antenna and after acceptor circuit demodulation filtering, become the serial input terminal RXD pin that digital signal is sent to micro controller system, therefrom discern by micro controller system and to have or not the telecommand of issuing this car. start alarm command (confirming correct words) when identifying the remote control of issuing this car through inference elimination, or detect outside 0 when interrupting time length occurring on the input port INTO pin (button is sent out in contact) and surpassing the low level (preventing false triggering) in three seconds, micro controller system then carry out the send-receive job procedure. this moment, system was with the two states alternation: emission (repeatedly circulation) ┄ receives the ┄ emission ... during launching, micro controller system accesses the calling signal that pre-deposits is sent to transmission circuit by serial delivery port TXD pin modulation input end from EPROM, the P1.1 pin of single-chip processor i/o mouth becomes low level by high level simultaneously, relay J 2 energisings, its a pair of open contact closure, normally closed contact is opened, make transmission circuit get electric work, the acceptor circuit outage quits work.When the emission end cycle, the P1.1 pin of single-chip processor i/o mouth becomes high level by low level, relay J 2 outages, its open contact is opened, its normally closed contact closure, make the transmission circuit outage, and acceptor circuit gets electric work reception period, when micro controller system identifies the remote control pressure cutoff command of issuing this car from receive next wireless signal, the P1.2 pin of single-chip processor i/o mouth becomes high level by low level, relay J 1 outage, and its open contact is opened, cut off the engine ignition system current supply circuit, made engine dies.Instruct unless micro controller system is resetted or receive the police that disappears, otherwise relay just is in off-position always, makes driving engine can't start work.When receiving the remote control alert instruction that disappears, micro controller system then carry out to receive and wait for job procedure.

Be cut off or system when suffering illegally to dismantle in system power supply, because of relay J 1 outage, its open contact that is serially connected in the engine ignition system current supply circuit is in open mode, so this moment, driving engine also can't start to work.

When touching calling for help triggering button, the driver can know that (affirmation) system sends out a signal for help by slight (state exchange) patter the sound of relay.

Calling signal is made up of " preamble code+hardwood synchronous code+local postcode or trunk call area code+vehicle safety code name+stop code ".Telecommand is made up of " hardwood synchronous code+vehicular seat postcode or trunk call area code+vehicle safety code name+startup alarm code (or the sign indicating number that force to stop, alert sign indicating number disappears)+stop code ".

Claims (2)

1, a kind of power actuated vehicle is wireless calling for help recovering system, use car direct current power supply, by metal shell, transmission circuit, code device or circuit and Car antnna, trigger button, lead-in wire, feeder line is formed, it is characterized in that controlling a single-frequency transmission circuit simultaneously with a microcomputer control circuit, a single-frequency acceptor circuit, the job procedure of system and calling signal all are stored among the integrated circuit memory EPROM (A11) in advance, the modulation input end (p) of single-frequency transmission circuit and the signal output part (e) of single-frequency acceptor circuit are received the serial communication output of micro controller system in the microcomputer control circuit respectively, input port (RXD), (TXD) on, two one in lead-in wires that trigger button are connected on the outside 0 interruption input port (NT0) of micro controller system, another root is connected on the car body, two I/O mouths (P1.1) of micro controller system and (P1.2) by two relay J 1 of an open collector driver circuit (A11) control, the power on/off state of J2, the open contact of one of them relay is serially connected in the engine ignition system current supply circuit, and the open contact of another relay and normally closed contact are serially connected in the power amplifier current supply circuit of transmission circuit respectively and in the current supply circuit of acceptor circuit.

2, the wireless distress system of power actuated vehicle according to claim 1, it is characterized in that calling signal is made up of preamble code, hardwood synchronous code, vehicle region code, vehicle safety code and stop code, the vehicle region code adopts local postcode or trunk call area code.

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