CN2624288Y

CN2624288Y - A random excitation burglarproof switch controller

Info

Publication number: CN2624288Y
Application number: CN 03241344
Authority: CN
Inventors: 邓华; 熊昌仑
Original assignee: Wuhan University WHU
Current assignee: Wuhan University WHU
Priority date: 2003-04-23
Filing date: 2003-04-23
Publication date: 2004-07-07
Anticipated expiration: 2013-04-23

Abstract

The utility model relates to a randomly excited antitheft switch controller, which comprises a microprocessor, a display screen, man-machine interactive keys and a controllable electronic switch; the microprocessor is respectively connected with the display screen input end, the man-machine interactive keys output end and the controllable electronic switch input through an I/O pin. The utility model takes the microprocessor as the control kernel to render the internal timer becoming the system clock, runs the random number generating program to specify the time for switching ON/OFF at night, thus during the host is outside, the lighting system can automatically control the ON/OFF randomly at night, and the others would consider that the host is at home. Thus the thief can't determine whether the host is at home or not and the illegal intrusion is avoided. The utility model is easy to install and operate, has high reliability, high performance cost ratio, etc, which is an effective security device for a family.

Description

A kind of anti-theft switch controller of arbitrary excitation

Technical field

The utility model relates to a kind of anti-theft switch controller of arbitrary excitation.

Background technology

As people when out on tours is on home leave of the whole family, how the problem of their primary concern guarantees the safety of household often, and common way is that various mechanical antitheft doors and burglar alarm are installed in the room.But these measures are difficult to stop patronizing of illegal invasion person.The robber often by setting foot-point, judged unmanned within doors back and the burglary of forcing open the door before committing theft.

The utility model content

The utility model is exactly the anti-theft switch controller that a kind of arbitrary excitation is provided at the problems referred to above; it can be according to people's habits and customs; at switching lamp and stereo set automatically and at random at night; so that whether someone's robber lives in can't the identification room; and the burglary of hesitating, thereby the safety of protection household.

The technical scheme that the utility model provides is: a kind of anti-theft switch controller of arbitrary excitation, comprise microprocessor, display screen, man-machine interaction button and controllable electronic switch, input links to each other microprocessor with controllable electronic switch with display screen input end, man-machine interaction button output terminal respectively by the I/O pin.

The utility model is provided with the microprocessor watchdog circuit, and this circuit is that core is built with the microprocessor monitors chip, and the control pin of this chip links to each other with microprocessor I/O pin, and output pin links to each other with the microprocessor reseting pin.

The utility model also can be provided with light measuring circuit, and light measuring circuit mainly is made up of photistor and triode, and the photistor output terminal links to each other with the triode input end, and the triode output terminal links to each other with microprocessor I/O pin by phase inverter.

The utility model is with the core of microprocessor as control, use its timer internal construction system clock, determine moment by the operation Monte Carlo generator in night switch closure and disconnection, thereby can realize when owner goes out the domestic lighting system in bright at random automatic control of putting out at night, the sensation that causes a kind of owner still to be in to the external world.So that whether someone's robber lives in can't the identification room, thereby has confused possible illegal invasion person, makes it owing to not clear actual situation is hesitated to swarm into.The utlity model has easy to install, good reliability, cost performance advantages of higher, the effective barrier together of the residential quarters average family safe antitheft of can yet be regarded as.

Description of drawings

Fig. 1 is a circuit block diagram of the present utility model;

Fig. 2 is the utility model circuit theory diagrams.

Embodiment

Below in conjunction with drawings and Examples, the utility model is described in further detail.

Referring to Fig. 1, the utility model comprises microprocessor 1, display screen 2, man-machine interaction button 3, controllable electronic switch 4, watchdog circuit 5 and light measuring circuit 6.

Microprocessor of the present utility model can adopt the 80C51 single-chip microcomputer, portion's data storage interval is opened up respective regions and is come the upper and lower limit time of place system time, switch closure and the upper and lower limit time that switch disconnects respectively within it, and these temporal informations can artificially be set.Button S1 among Fig. 2 ,+,--and S2 aims at setting-up time and designs, wherein the S1 key is that system time is set pattern and normal timing mode shift key; + key is adjusted key for the incremental time; One key is adjusted key for the degression type time; The S2 key is the upper limit time set pattern of lower limit time set pattern, the switch closure of switch closure, the lower limit time set pattern that switch disconnects, upper limit time set pattern and the normal timing mode shift key that switch disconnects, and+a key and a key only are in when setting pattern sometime just effectively in system.So the S1 key and+key or-real time of locality when key matches and system time can be set at system and come into operation, system time is set the back and is regularly interrupted in time being upgraded by the 80C51 timer internal; The S2 key and+key or-the match setting of the upper and lower limit time that the upper and lower limit time that then can finish switch closure and switch disconnect of key.Among Fig. 2 four charactron LED1---LED4 is used for the demonstration time, when wherein LED1 and LED2 were used to show, LED3 and LED4 were used for show dividing.The port P0 of 80C51 and P2 control charactron are to realize dynamic demonstration, and wherein the P0 mouth is responsible for exporting successively the demonstration control word of each charactron; And P2.0---P2.3 is responsible for exporting successively the position control word of each charactron, and promptly output low level makes triode Q1 successively---Q4 conducting and light one of them charactron successively.When system was in normal timing mode, what charactron showed was the local real time, and was in when setting pattern sometime when system, and that charactron shows is the result of setting.Because P2.0---P2.3 is output low level successively constantly, when button S1 ,+,--and arbitrary key is pressed Shi Douhui and is made the INT1 pin level of 80C51 cause external interrupt by high step-down among the S2, so can finish by the external interrupt service routine button is judged and is handled.

Photistor VTP and triode Q6 form a light measuring circuit among Fig. 2, its principle of work is: when unglazed photograph or light are very dark, the resistance in the dark of VTP is very big, and the base bias current of Q6 is very little and disconnect, circuit by phase inverter U3B to the P2.6 of 80C51 pin output low level; During if any illumination, circuit operation is with above-mentioned opposite, and circuit exports the level of P2.6 pin to for high.Insert a resistance R 8 between the base stage of VTP and the ground to constitute temperature compensation.Diode D7 of series connection on the emitter of Q6 is in order to improve the current potential of Q6 base stage.These measures all are for the influence to circuit of the dark current that prevents photistor VTP, guarantee that it can operate as normal in certain temperature range.

Behind the bound time set of switch closure and switch disconnection, 80C51 moves Monte Carlo generator, and the closing moment and the switch of calculating respectively in the switch closure bound time period on the same day according to the random number that produces this moment disconnect the disconnection of bound in the time period constantly.In time afterwards, 80C51 produces a new random number on the same day to the random number of yesterday as seed operation Monte Carlo generator every day, makes the switch closure of every day and the moment that switch disconnects have nothing in common with each other, and presents randomness.When system time during, 80C51 inquiry P2.6 pin level (judging this moment, whether it's getting dark), as be low, then export control signal and make switch RELAY1 closure, light parlor illuminator BULK1 by the P1.0 pin to closing moment; As be high, then need wait for and constantly inquire about the P2.6 pin level is that low just closed RELAY1 lights BULK1 until the P2.6 pin level.When system time during the moment, then makes switch RELAY2 closure by P1.1 pin output control signal earlier to disconnection, light bedroom illuminator BULK2, and then extinguish BULK1 by P1.0 pin output control signal cut-off switch RELAY1; The time span that BULK2 lights was chosen by two hours at 30 minutes according to the random number that produced the same day by 80C51, be that the time span that BULK2 lights also is at random, time one arrives, 80C51 disconnects switch RELAY2 by P1.1 pin output control signal, extinguish BULK2, thereby realized the bright at random control of putting out of house illuminator.Above-mentioned switch also can be used for controlling sound equipment or other electric equipments.Electronic switch also can be selected optocoupler or thyristor etc. for use according to the concrete weight of load except that selecting for use the relay, and the number of switch can utilize 80C51 residue I/O pin to be expanded according to actual needs.

Power unit is at ordinary times providing voltage stabilizing by a slice 7805 to total system behind the civil power step-down rectifier among Fig. 2.When outage, back-up source 3*1.5V devotes oneself to work to keep the normal Control work of system.

For guaranteeing the single-chip microcomputer reliably working, single-chip microcomputer among Fig. 2 has also adopted watchdog circuit, this circuit is that core is built with microprocessor monitors chip MAX813L, the control pin of this chip links to each other with single-chip microcomputer P2.7 pin, output pin links to each other with single-chip microcomputer 80C51REST pin, as the Single Chip Microcomputer (SCM) program race being flown or power-down conditions taking place, MAX813L will export reset signal so that single-chip microcomputer recovers normal operation.

Claims

1. the anti-theft switch controller of an arbitrary excitation, it is characterized in that: comprise microprocessor, display screen, man-machine interaction button and controllable electronic switch, input links to each other microprocessor with controllable electronic switch with display screen input end, man-machine interaction button output terminal respectively by the I/O pin.

2. anti-theft switch controller according to claim 1, it is characterized in that: be provided with the microprocessor watchdog circuit, this circuit is that core is built with the microprocessor monitors chip, and the control pin of this chip links to each other with microprocessor I/O pin, and output pin links to each other with the microprocessor reseting pin.

3. anti-theft switch controller according to claim 1 and 2, it is characterized in that: be provided with light measuring circuit, light measuring circuit mainly is made up of photistor and triode, the photistor output terminal links to each other with the triode input end, and the triode output terminal links to each other with microprocessor I/O pin by phase inverter.