CN202159393U

CN202159393U - Built-in anti-disassembly anti-theft monitoring device

Info

Publication number: CN202159393U
Application number: CN2011202068335U
Authority: CN
Inventors: 付家宁
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-06-20
Filing date: 2011-06-20
Publication date: 2012-03-07
Anticipated expiration: 2021-06-20

Abstract

Provided is a built-in anti-disassembly anti-theft monitoring device. A resistor (1) is arranged in a connection rod (6), and a wire of one end of the resistor (1) penetrates out by means of the connection rod (6) and a connection cap (2) and then is correspondingly placed in an opening and sealed so that the resistor (1) is hard or impossible to take out. A monitoring circuit module performs timely probing and monitoring on factors of the resistor (1) including a resistor value, an external voltage, a short circuit, circuit breaking and the like so that the built-in anti-disassembly anti-theft monitoring device is formed. The defect that most anti-theft monitoring devices are small in monitoring areas and need cleaning is overcome.

Description

The anti-dismounting antitheft of a kind of built-in type sniffer

Affiliated technical field

The utility model relates to a kind of antitheft sniffer, especially a kind of front unit device that is used for surveying apart from the antitheft of watchman's machine far away or equipment monitoring.

Background technology

At present, be widely used in the sniffer of antitheft front unit, kind is more; Survey the front unit device such as ultrared emission and reception, human body sensing etc.; They have deficiency to a certain extent, such as: dense fog, inclement weather such as thunder; Or normally the walking about of animal such as cat, all be prone to cause the sniffer work of front unit and then form false alarm; Have again, near protected object or the staff's in the supervision scope operate as normal, also very easily cause and report to the police and form false alarm.

Summary of the invention

In order to overcome the normal variation of existing part antitheft front unit sniffer because of extraneous uncertainty; Cause reporting by mistake the deficiency that must purify in the more and monitoring range of alert, the utility model provides the anti-dismounting antitheft of a kind of built-in type sniffer, that is: insert a resistance (1) among the chain extension bar (6); The posting port shutoff; It is difficult for or must not takes out resistance (1), the other end lead of resistance (1) through chain extension bar (6) with link cap (2) and pass, for this reason: link the sawed-off of the taking off of cap (2), chain extension bar (6); Broken string or other destruction that all will cause resistance (1), and then it is on-dismountable to reach device; Observation circuit module section (Fig. 2) is surveyed monitoring to the resistance (1) in the chain extension bar (6) in good time, and this device has the antitheft of anti-dismounting and surveys monitoring function.

The utility model solves the technical scheme that its technical matters adopted: inserts a resistance (1) and is used to link among the chain extension bar (6) of usefulness, and shutoff, make it be difficult for perhaps must not taking out; During observation circuit module section (Fig. 2) work; The resistance that is opposite to the resistance (1) among the chain extension bar (6) is surveyed monitoring; Make the extraneous factor of natural environment such as resistance Yin Wendu be hidden in the resistance (1) among the chain extension bar (6) change to allow reasonably change among a small circle outside, receive and strictly survey monitoring, as long as exceed the setting range of surveying observation circuit module section (Fig. 2); Then trigger back-end circuit work so that warning; For this reason: it is hidden in the lead and the resistance (1) itself at resistance (1) two ends among the chain extension bar (6), can not short circuit and open circuit, and then reach the purpose that link cap (2) is inadvisable, chain extension bar (6) can not be sawed; Surveying the circuit of observation circuit module section (Fig. 2) works with the variable square-wave discontinuous; Be output as height (or low) level at square wave; When correspondence is inserted the no WV of resistance (1); Whether the two ends that observation circuit module section (Fig. 2) is then surveyed the resistance (1) that is hidden in the chain extension bar (6) have impressed voltage, to guarantee the existence of resistance (1), not replaceable.

The beneficial effect of the utility model is, system architecture is simple, working stability, and rate of false alarm is low; Easy to process, with low cost; When the monitoring system operate as normal, near influence that animal such as weather and cat normally walks about it such as protected object do not receive dense fog, thunder has made things convenient near work such as staff's normally patrolling and examining protected object or in the scope simultaneously.

Description of drawings

Below in conjunction with accompanying drawing the utility model is further specified.

Fig. 1 is the built-in type anti-disassembling device of the utility model.

Fig. 2 is the fundamental diagram of the utility model observation circuit module section.

1. resistance among the figure, 2. link cap, 3. link fastening cap, the 4. housing of protected object or base, the 5. loam cake of protected object, 6. chain extension bar; 7. plugging block, 8. photoelectrical coupler, 9. resistance, 10. resistance, 11. resistance, 12. light emitting diodes; 13. photoelectrical coupler, 14. resistance, 15. electric capacity, 16. diodes, 17. resistance, 18. positive-negative-positive triodes; 19. resistance, 20. resistance, 21. positive-negative-positive triodes, 22. resistance, 23. diodes, the square-wave generator of 24. EDM Generator of Adjustable Duty Ratio; 25. resistance, 26. resistance, 27. compare judge module, 28. alarm modules, 29. gauze screens.

Embodiment

In Fig. 1, in chain extension bar (6), insert resistance (1), and shutoff, make resistance (1) be difficult for perhaps must not taking out, to constitute the anti-dismounting antitheft of built-in type sniffer.

In Fig. 2; When the square-wave generator (24) of EDM Generator of Adjustable Duty Ratio during in output low level, positive-negative-positive triode (21) ends, positive-negative-positive triode (18) conducting; Electric current is through resistance (17) and photoelectrical coupler (8) and resistance (1) formation loop; Simultaneously, photoelectrical coupler (8) output one corresponding level compares judgement to comparing judge module (27), as long as in setting range; Relatively judge module (27) does not have the level signal input to alarm module (28), and follow-up warning circuit does not start.When the square-wave generator (24) of EDM Generator of Adjustable Duty Ratio during at the output high level; Positive-negative-positive triode (21) conducting; Positive-negative-positive triode (18) ends, and at this moment, does not have electric current to flow through through photoelectrical coupler (8) and resistance (1); At this moment, photoelectrical coupler (8) does not have level to export to comparison judge module (27); But this moment is in square-wave generator (24) the output high level of EDM Generator of Adjustable Duty Ratio; There is a corresponding level to input to comparison judge module (27) through diode (23); Judge comparison, for this reason, relatively judge module (27) does not also start alarm module (28).

In Fig. 2; If any malice busybody desire the resistance value of inserting resistance (1) in the anti-disassembling device there are increase or minimizing; Perhaps there be to the lead of inserting resistance (1) two ends opening circuit of formation such as short circuit or trimming; The square-wave generator (24) of meeting EDM Generator of Adjustable Duty Ratio surely causes the output level of photoelectrical coupler (8) that corresponding variation takes place when output low level, thereby causes comparison judge module (27) output or high or low level; Start alarm module (28) and then warning; Outside thereby the extraneous factor of natural environment variations such as resistance Yin Wendu that guarantee the resistance (1) among the chain extension bar (6) allow and reasonably change among a small circle, receive strict the detection and monitoring, and then also guaranteed the lead at the two ends of resistance (1); The detection of can not short circuit or opening circuit judges, certainly: chain extension bar (6) with link cap (2) and cannot destroy.

In Fig. 2, malice busybody desire is arranged for another example to resistance (1), when carrying out resistance (1) work with magnitude of voltage wait magnitude of voltage to be added in to insert on the lead at resistance (1) two ends; Attempt broken string and take off link cap (2), and then take off link fastening cap (3), take off chain extension bar (6) again; This kind situation, the square-wave generator (24) of meeting EDM Generator of Adjustable Duty Ratio surely is at the output high level, when positive-negative-positive triode (18) ends; Its voltage that is added to resistance (1) two ends will pass through photoelectrical coupler (13) and resistance (9) forms current return; At this moment, photoelectrical coupler (13) just has a level and exports to comparison judge module (27) under the situation that does not originally have level output; And then cause comparison judge module (27) to be exported or high or low level; To start alarm module (28) and then to report to the police, guarantee the existence of resistance (1) for this reason, not replaceable.

To Fig. 2; It can be the integration of one or more Fig. 2; Can obtain novel circuit is integrated in the existence of the resistance (1) in one or more chain extension bar (6) and the detection monitoring of resistance value reasonable change; With separately or be applied to simultaneously, or be used among the linking point or link face that machine or equipment need prevent dismantling apart from the watchman's machine far away or the antitheft of equipment, can also be separately one or more survey resistance (1) or and place together among correlation machine or the device interior with chain extension bar (6); And shutoff, the detection of in good time guarding against theft.

Claims

1. a built-in type is prevented dismounting antitheft sniffer; It is characterized in that: insert a resistance (1) and be used to link among the chain extension bar (6) of usefulness; One end lead of resistance (1) passes through chain extension bar (6) and link cap (2), again to the posting port shutoff, makes resistance (1) be difficult for perhaps must not taking out; The observation circuit module is surveyed monitoring to resistance value, impressed voltage, the short circuit of its resistance (1), factor such as open circuit in good time, constitutes the anti-dismounting antitheft of a kind of built-in type sniffer.

2. the anti-dismounting antitheft of a kind of built-in type according to claim 1 sniffer; It is characterized in that: during the work of observation circuit module; The resistance value that is opposite to the resistance (1) among the chain extension bar (6) is surveyed monitoring; Make the extraneous factor of natural environment such as resistance value Yin Wendu place the resistance (1) among the chain extension bar (6) change to allow reasonably change among a small circle outside; Receive strict the detection and monitoring, and then also guaranteed the lead at resistance (1) two ends, can not short circuit or the judgement of opening circuit.

3. the anti-dismounting antitheft of a kind of built-in type according to claim 2 sniffer; It is characterized in that: the circuit of observation circuit module is worked with the variable square-wave discontinuous; Be output as high level at square wave, during the no WV of the resistance that correspondence is inserted (1), whether the observation circuit module is promptly surveyed resistance (1) two ends that place among the chain extension bar (6) has impressed voltage; To guarantee the existence of resistance (1), inadvisable moving replacement.

4. the anti-dismounting antitheft of a kind of built-in type according to claim 2 sniffer; It is characterized in that: the integration that can be one or more observation circuit module; Can obtain novel circuit is integrated in the detection monitoring of one or more resistance (1); Right so long as one or more resistance (1) is surveyed other novel circuits of monitoring, also all in the application's claim, protect.

5. the anti-dismounting antitheft of a kind of built-in type according to claim 1 sniffer; It is characterized in that: can be one or more resistance (1); It can also be the combination of one or more resistance (1) and chain extension bar (6); Perhaps be applied to the machine or the equipment of desire antitheft separately simultaneously, need among linking point, link face or the inside of anti-dismounting.