CN202632451U

CN202632451U - Breakage-proof wireless anti-theft detector

Info

Publication number: CN202632451U
Application number: CN 201220280496
Authority: CN
Inventors: 伍伟权
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-06-14
Filing date: 2012-06-14
Publication date: 2012-12-26
Anticipated expiration: 2022-06-14

Abstract

The utility model provides a breakage-proof wireless anti-theft detector which comprises an infrared detection unit, a single chip processing unit, a wireless transmitting unit and a power unit for supplying power to each part, wherein the infrared detection unit and the wireless transmitting unit are connected with the single chip processing unit. Even in a disarming state (the power switch is switched off), the detector still has an anti-disassembly protection function and can send an alarm prompt signal to an alarm receiving controller so that operation personnel can obtain the conditions of the front-end detector anytime and take corresponding measures, thereby reducing the loss of property, realizing a better anti-theft alarm effect and being safer and more practical.

Description

A kind of vandal-proof wireless anti-theft detector

Technical field

The utility model relates to the safe antitheft field, more particularly is meant a kind of vandal-proof wireless anti-theft detector.

Background technology

Pir intrusion detector is the important device of unscheduled events such as prevention theft, robbery, in case accident takes place, the site of an accident can accurately be learnt through the sound and light alarm signal by the control center that receives a crime report, and takes measures rapidly, has been widely used in various places at present.

Common wireless anti-theft detector can only turn-off power supply through the external power supply switch if let it be operated in the state of withdrawing a garrison, but can not send tamper information again because of detector cuts off the power supply at present; Receive a crime report control center can't learn before the end detector working condition; Destroy in case suffer the lawless person, the preceding ruined information of end detector can't be learnt by the control center that receives a crime report, and is transferred to once more when deploying troops on garrison duty state and will loses anti-theft feature; Moreover, lack the state upload function to present wireless anti-theft detector.We provide a kind of vandal-proof pir intrusion detector that can send signals such as " start ", " shutdown ", " under-voltage ", " tearing machine open ", " intrusion alarm ".

The utility model content

A kind of vandal-proof wireless anti-theft detector that the utility model provides, its purpose are to overcome existing pir intrusion detector and when outage, are destroyed deficiencies such as can't sending information warning.

The technical scheme that the utility model adopts is following:

A kind of vandal-proof wireless anti-theft detector; Comprise that infrared detection unit, single-chip microcomputer processing unit, wireless transmitting unit reach the power supply unit for the each part mentioned above power supply; Infrared detection unit, wireless transmitting unit are connected with the single-chip microcomputer processing unit; This power supply unit comprises that externally fed power supply and self-contained battery, two cuttves two select power supply trigger switch, a P type FET, a N type FET and an electric capacity, and the d utmost point of the g utmost point of P type FET and N type FET interconnects and all be connected to first end of electric capacity, and the d utmost point of P type FET is connected with power source loads; The g utmost point of N type FET is connected with single-chip microcomputer, the s utmost point ground connection of N type FET; The externally fed power supply is connected through the s utmost point of diode with self-contained battery and P type FET; The power supply trigger switch is one group common end grounding wherein, and normal-closed end is connected with second end of electric capacity, and Chang Kaiduan is connected with the g utmost point of N type FET, and another group is parallelly connected with electric capacity, and normal-closed end is unsettled.

Further, this detector also comprises the tamper power switch, one group common end grounding wherein, and normal-closed end is unsettled, and Chang Kaiduan connects the d utmost point of N type FET; The common end grounding of another group switch, normal-closed end is unsettled, and when Chang Kaiduan connects the single-chip microcomputer tamper and detects I/O, be connected with light emitting diode, said light emitting diode is connected to power supply through resistance.

Again further, the d utmost point of above-mentioned P type FET is received said single-chip microcomputer processing unit in order to the under-voltage detection of power supply unit behind electric resistance partial pressure.

Can know through above-mentioned description the utility model, and comparing with prior art, the advantage of the utility model is:

1, after detector is withdrawn a garrison, control module so can detect tears motor-driven work open and the machine signal is torn in transmission open, and the controller of receiving a crime report can be known the situation of detector at any time, guards against better effects if, more practicality.

2, this detector all can be tamper warning power supply no matter be in the state of deploying troops on garrison duty or withdraw a garrison, and the power control circuit current sinking is only in several microamperes.

3, when battery is under-voltage, can send fault alarm and close powered battery, if the power supply trigger switch is in "open" state at this moment, detector can return to the state of deploying troops on garrison duty when externally fed was arranged.

4, this detector is novel, simple in structure, realization is easy, has vast market prospect.

Description of drawings

Fig. 1 is the electrical block diagram of the utility model;

Fig. 2 is the local enlarged diagram of power supply unit;

Fig. 3 is the enlarged diagram of the utility model single-chip microcomputer.

Embodiment

With reference to figure 1, Fig. 2 and Fig. 3; A kind of vandal-proof pir intrusion detector; Comprise the power supply unit 4 that infrared detection unit 1, single-chip microcomputer 2, wireless transmitting unit 3 reach to the each part mentioned above power supply; Infrared detection unit 1, wireless transmitting unit 3 are connected with single-chip microcomputer 2, and power supply unit 4 comprises that externally fed power supply 41 and self-contained battery 42, two cuttves two select power supply trigger switch 43, a P type FET 44, a N type FET 45 and an electric capacity 46.The d utmost point of the g utmost point of P type FET 44 and N type FET 45 interconnects and all is connected to first end of electric capacity 46; The d utmost point of P type FET 44 is connected with power source loads; The g utmost point of N type FET 45 is connected with single-chip microcomputer 2, the s utmost point ground connection of N type FET 45; Externally fed power supply 41 is connected through the s utmost point of diode 51 with self-contained battery 42 and P type FET 44; Power supply trigger switch 43 comprises two groups of 43-1 and 43-2, and wherein one group of 43-1 is parallelly connected with electric capacity 46, and normal-closed end is unsettled; The common end grounding of another group 43-2, normal-closed end is connected with second end of electric capacity 46, and Chang Kaiduan is connected with the g utmost point of N type FET 45.

Continuation is with reference to Fig. 1, and this detector also comprises tamper power switch 52, the common end grounding of one group of 52-2 wherein, and normal-closed end is unsettled, and Chang Kaiduan connects the d utmost point of N type FET 45; The common end grounding of another group switch 52-1, normal-closed end is unsettled, and when Chang Kaiduan connects single-chip microcomputer 2 tampers and detects I/O, be connected with light emitting diode 53, light emitting diode 53 is connected to power supply through resistance R 4.

When power supply trigger switch 43-2 is allocated to the N type FET g utmost point one side (also will pass through R6); Because of power supply trigger switch 43-2 common end grounding, so the g pole tension is close to 0 volt, after the power supply control pin of single-chip microcomputer 2 (8 pin) detects " low " voltage; Send " shutdown " signal and give the controller of receiving a crime report; Power supply control pin (8 pin) transfers low level to by the high level of former output, and P type,

N type FET

44,45 end simultaneously, accomplishes the shutdown task; Under the off-mode, the battery consumption electric current only is that two FETs end loss, and its value is very little.

When power supply trigger switch 43-2 is allocated to " start " by " shutdown "; Its linked switch 43-1 also changes open-circuit condition into by original and electric capacity 46 parallelly connected states; Electric capacity 46 after the discharge charges through switch 43-2 over the ground, the 44 moment conducting of P type FET, in the machine or the outer supply voltage of machine supply power through boosting after, for single-chip microcomputer 2; The power supply control pin of single-chip microcomputer 2 (8 pin) output high level; P type, 44,45 conductings simultaneously of N type FET are sent " start " signal and are given the controller of receiving a crime report under single-chip microcomputer 2 controls, accomplish the shutdown task.

The P type FET d utmost point is received single-chip microcomputer 3 pin after resistance R 1, R2 and R3 dividing potential drop; When self-contained battery 42 voltages hang down to setting value; Under single-chip microcomputer 2 controls, send " under-voltage " and " shutdown " signal and give the controller of receiving a crime report; The power supply control pin of single-chip microcomputer 2 (8 pin) transfers low level to by the high level of former output, and P type,

N type FET

44,45 end simultaneously, accomplishes failure warning and shutdown task.

When externally fed recovers to self-contained battery 42 chargings; If power switch is in " shutdown " state; No matter be all because of switch 43-1 common end grounding from D1 or the voltage of microcontroller power supply control pin (8 pin); The g that makes N type FET 45 is low-voltage very, so P type,

N type FET

44,45 are kept cut-off state, i.e. and " shutdown " state; If because battery is under-voltage " shutdown ", and power switch is when being in " start " state, and in the time of charging, its externally fed makes P type, 44,45 conductings simultaneously of N type FET through D1 and R5, promptly returns to " start " state.

No matter detector is in " start " or " shutdown " state; The behavior of tearing detector open all makes breaking-proof switch 52-2 action; Make P type field should manage 44 conductings and to single-chip microcomputer 2 power supply, tamper linked switch 52-1 makes 9 pin of single-chip microcomputer 2 drag down the LED light-emitting caution; And send " tearing machine open " signal and give the controller of receiving a crime report, accomplish the caution task.

Because of power supply unit 4 is selected voltage-controlled effect tube device for use, the optional very big value of its biasing resistor, no matter be shutdown or open state, the power control circuit current sinking is only in several microamperes.

The above-mentioned embodiment that is merely the utility model, but the design concept of the utility model is not limited thereto allly utilizes this design that the utility model is carried out the change of unsubstantiality, all should belong to the behavior of invading the utility model protection domain.

Claims

1. vandal-proof wireless anti-theft detector; Comprise that infrared detection unit, single-chip microcomputer processing unit, wireless transmitting unit reach the power supply unit for the each part mentioned above power supply; Infrared detection unit, wireless transmitting unit are connected with the single-chip microcomputer processing unit; It is characterized in that: this power supply unit comprises that externally fed power supply and self-contained battery, two cuttves two select power supply trigger switch, a P type FET, a N type FET and an electric capacity; The d utmost point of the g utmost point of said P type FET and N type FET interconnects and all is connected to first end of electric capacity; The d utmost point of P type FET is connected with power source loads, and the g utmost point of N type FET is connected with single-chip microcomputer, the s utmost point ground connection of N type FET; The externally fed power supply is connected through the s utmost point of diode with self-contained battery and P type FET; The power supply trigger switch is one group common end grounding wherein, and normal-closed end is connected with second end of electric capacity, and Chang Kaiduan is connected with the g utmost point of N type FET, and another group is parallelly connected with electric capacity, and normal-closed end is unsettled.

2. a kind of vandal-proof wireless anti-theft detector according to claim 1 is characterized in that: also comprise the tamper power switch, and one group common end grounding wherein, normal-closed end is unsettled, and Chang Kaiduan connects the d utmost point of N type FET; The common end grounding of another group switch, normal-closed end is unsettled, and when Chang Kaiduan connects the single-chip microcomputer tamper and detects I/O, be connected with light emitting diode, said light emitting diode is connected to power supply through resistance.

3. a kind of vandal-proof wireless anti-theft detector according to claim 1 is characterized in that: the d utmost point of said P type FET is received said single-chip microcomputer processing unit in order to the under-voltage detection of power supply unit behind electric resistance partial pressure.