CN203242115U - Entrance machine tamper alarm circuit - Google Patents
Entrance machine tamper alarm circuit Download PDFInfo
- Publication number
- CN203242115U CN203242115U CN 201220744592 CN201220744592U CN203242115U CN 203242115 U CN203242115 U CN 203242115U CN 201220744592 CN201220744592 CN 201220744592 CN 201220744592 U CN201220744592 U CN 201220744592U CN 203242115 U CN203242115 U CN 203242115U
- Authority
- CN
- China
- Prior art keywords
- circuit
- machine
- dismantling
- tamper
- proof alarming
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
Links
Images
Landscapes
- Alarm Systems (AREA)
Abstract
The utility model relates to an entrance machine tamper alarm circuit, which comprises a gate front machine or elevator entry machine circuit, a tamper alarm oscillation circuit and a tamper detection and trigger circuit. The power supply of the gate front machine or elevator entry machine circuit is connected with the tamper alarm oscillation circuit. The call line of the gate front machine or elevator entry machine circuit is connected with the tamper detection and trigger circuit. The oscillation output of the tamper alarm oscillation circuit is connected with the tamper detection and trigger circuit. When there is a power supply, the tamper alarm oscillation circuit generates oscillation. The tamper detection and trigger circuit which is composed of a single-pole double-throw or double-pole double-throw tamper detection switch, a standby charging circuit and a call drive circuit achieves tamper detection, call driving and meanwhile energy storing of a first call. By adopting a low-cost simple and practical tamper circuit scheme, the entrance machine tamper alarm circuit can achieve tamper alarm functions of entrance machines or elevator entry machines with no single-chip microcomputers and no power supplies in normal times.
Description
Technical field
The utility model relates to building conversational system equipment, especially is applied to the equipment that in front of the door machine, ladder-port machine etc. need dismantling-proof alarming, is particularly suitable for existing transformation without the dismantling-proof alarming functional product and makes it have the dismantling-proof alarming function.
Background technology
At present in the building conversational system in front of the door the tamper of the equipment such as machine or ladder-port machine mainly be to adopt the single-chip microcomputer Check processing, then by the output of reporting to the police of the modes such as communication or this equipment jingle bell, this scheme realizes it being more satisfactory at the equipment that contains single-chip microcomputer, but then cost is higher for the equipment that itself does not contain single-chip microcomputer, if on the equipment that does not have at ordinary times Power supply then substantially can't realize.
In addition, in building conversational system, for system's power saving and saving cost, machine or ladder-port machine mostly adopt the discrete component design and do not have at ordinary times Power supply in front of the door, only have in the situation that has customer call or user to monitor and just provide in front of the door machine or ladder-port machine power supply, the less tamper function that is designed with.Adopt in this case general single-chip microcomputer to solve difficult realization of tamper, and the large cost of change amount is also higher.
The utility model content
For addressing this problem, the utility model is by a kind of low cost, and simple and practical decomposing prevention circuit scheme can realize without single-chip microcomputer and there is not at ordinary times electricity that the dismantling-proof alarming function of the equipment such as the doorway machine of Power supply or ladder-port machine is arranged.
The utility model is achieved in that a kind of doorway machine dismantling-proof alarming circuit, comprise in front of the door machine or ladder-port machine circuit, it is characterized in that: also comprise dismantling-proof alarming oscillatory circuit and tamper detection and trigger circuit, the power supply of machine or ladder-port machine circuit links to each other with the dismantling-proof alarming oscillatory circuit in front of the door; The call circuit of machine or ladder-port machine circuit links to each other with trigger circuit with the tamper detection in front of the door; The vibration output of dismantling-proof alarming oscillatory circuit links to each other with trigger circuit with the tamper detection.Described dismantling-proof alarming oscillatory circuit will produce vibration when Power supply is arranged, described tamper detection and trigger circuit are comprised of with calling triggering driving circuit tamper detector switch and the standby charging circuit of a single-pole double-throw (SPDT) or dpdt double-pole double-throw (DPDT), finish tamper and detect and call out the accumulation of energy that simultaneously realization of driving is called out first.
The oscillation frequency of described dismantling-proof alarming oscillatory circuit is about 0.25Hz ~ 0.1Hz, and to adjust its dutycycle according to the pulse width signal of calling out be 2% ~ 30%.
The power supply of described dismantling-proof alarming oscillatory circuit is by machine or ladder-port machine circuit are powered by diode D1 in front of the door, again by after capacitor C 1 filtering, form oscillatory circuit by chip IC 1, capacitor C 2 and C3, resistance R 1 and R2, diode D2 and D3, its dutycycle can be regulated by resistance R 1 and R2, capacitor C 3, and formula is: T1=R1*C3*ln2=0.7*R1*C3; T2=R2*C3*ln2=0.7*R2*C3; T=T1+T2, wherein T1 is vibration output high level time, and general value was at 0.1 second ~ 1 second, and T2 vibrates general value of output low level time at 3 seconds ~ 10 seconds, and T is time oscillation period.
Described tamper detection and trigger circuit are comprised of breaking-proof switch SW2, triode Q1, resistance R 3 and R4 calls out the triggering driving circuit, forms the standby charging circuit by diode D5, resistance R 5 and capacitor C 4.
The utility model adopts a kind of low cost, simple and practical dismantling-proof alarming technical scheme, and the equipment such as in front of the door machine or ladder-port machine etc. that has solved without single-chip microcomputer or at ordinary times non-transformer power supply needs the dismantling-proof alarming function.During standby, breaking-proof switch is pressed, the call circuit of machine or ladder-port machine passes through the closed node of breaking-proof switch to capacitor charging in front of the door, the vibration output of dismantling-proof alarming oscillatory circuit disconnects by breaking-proof switch with the calling control circuit, and whether machine or ladder-port machine have electricity all can not trigger call circuit in front of the door as long as breaking-proof switch is pressed.When breaking-proof switch is upspring, the electric capacity that has been recharged disconnects with the closed node that is connected by breaking-proof switch of call circuit and drives call circuit, initiate call, the simultaneously vibration of dismantling-proof alarming oscillatory circuit output is connected by the closed node of breaking-proof switch with the calling control circuit.The equipment such as called indoor set are received after the calling can be in front of the door machine or ladder-port machine power devices, when machine or ladder-port machine equipment have electricity in front of the door, the dismantling-proof alarming oscillatory circuit will be started working, the periodic call circuit that triggers sends call signal to equipment such as indoor sets, the equipment such as indoor set receive that at every turn call signal all will carry out ring, reach the dismantling-proof alarming function.Simultaneously because this part dismantling-proof alarming circuit with machine or ladder-port machine circuit are related less in front of the door, can be realized modularization, the simple transformation that is applied to not contain dismantling-proof alarming equipment makes it have the dismantling-proof alarming function.
Description of drawings
In conjunction with the embodiments the utility model is further described with reference to the accompanying drawings.
Fig. 1 is the application structure block diagram of described doorway machine dismantling-proof alarming circuit.
Fig. 2 is the one-piece construction block diagram of described doorway machine dismantling-proof alarming circuit.
Fig. 3 is the in front of the door machine of described doorway machine dismantling-proof alarming circuit or the connection layout of ladder-port machine circuit.
Fig. 4 is the dismantling-proof alarming oscillatory circuit connection layout of described doorway machine dismantling-proof alarming circuit.
Fig. 5 is tamper detection and the trigger circuit connection layout of described doorway machine dismantling-proof alarming circuit.
Fig. 6 is the workflow diagram of described doorway machine dismantling-proof alarming circuit.
Embodiment
See also Fig. 1 and Fig. 2, a kind of doorway machine dismantling-proof alarming circuit, comprise in front of the door machine or ladder-port machine circuit (101), dismantling-proof alarming oscillatory circuit (102) and tamper detection and trigger circuit (103), the power supply of machine or ladder-port machine circuit (101) links to each other with dismantling-proof alarming oscillatory circuit (102) in front of the door; The call circuit of machine or ladder-port machine circuit (101) links to each other with trigger circuit (103) with the tamper detection in front of the door; The vibration output of dismantling-proof alarming oscillatory circuit (102) links to each other with trigger circuit (103) with the tamper detection.
Seeing also Fig. 3, is the in front of the door machine of described doorway machine dismantling-proof alarming circuit or the connection layout of ladder-port machine circuit.The circuit of machine or ladder-port machine circuit (101) visual or non-video intercom function for building conversational system has in front of the door, has call button, press call button for the visitor and will drag down call circuit to the equipment such as indoor set transmission call signal, the equipment such as indoor set receive the call signal that machine in front of the door or ladder-port machine send, will ring and open doorway machine or the power supply of ladder-port machine, realize intercommunication or the video intercom of machine in front of the door or ladder-port machine and the equipment such as indoor.In front of the door dynamo-electric road: CN2 as shown in Figure 3 is the indoor set interface; SW1 is that call button and R33 form call circuit; D6, C29, R16, R17, R23, R24, C14, C17, C18, ZD3, C24, D7 form power circuit; CN4, CN3, C31, IC2, IC4 and chip periphery components and parts form the audio frequency talkback circuit; ZD1, R20, C26, C16, C22, R21, R26, Q4, R18 form the unlocking signal testing circuit, D8, R31, C25, Q3, Q2, R25, R32, R22, C23, D9, J1 form the output circuit of unblanking, and IC3 and chip periphery components and parts form the output of unblanking, C30, the CN1 camera module composition video capture circuit that the driving delay circuit can arrange by S1 different durations.Consist of the unblank video intercom dynamo-electric road in front of the door of output function of a band.
Seeing also Fig. 4, is the dismantling-proof alarming oscillatory circuit connection layout of described doorway machine dismantling-proof alarming circuit.The power supply of dismantling-proof alarming oscillatory circuit (102) is by machine or ladder-port machine circuit (101) pass through capacitor C 1 filtering again by diode D1 power supply in front of the door.By IC1, C2, R1, R2, D2, D3, the C3 oscillatory circuit that to form a dutycycle be 0.25Hz ~ 0.1Hz, dutycycle can be regulated by R1, R2, C3, and formula is: T1=R1*C3*ln2=0.7*R1*C3; T2=R2*C3*ln2=0.7*R2*C3; T=T1+T2, wherein T1 is vibration output high level time, and general value is about 0.1 second ~ 1 second, and T2 is for vibrating general value of output low level time about 3 seconds ~ 10 seconds, and T is time oscillation period.
See also Fig. 5, the tamper detection of described doorway machine dismantling-proof alarming circuit and trigger circuit connection layout.It is again simultaneously to report to the police to vibrate output with the standby charging or call out first the triggering change-over switch that described tamper detection and trigger circuit (103) are namely detected as tamper by SW, formed to call out by Q1, R3, R4 again and trigger driving circuit, form the standby charging circuit by D5, R5, C4.
When tamper did not trigger, R5 linked to each other by SW2 with C4, and the voltage on the call circuit charges to C4 by D5, R5; The output of dismantling-proof alarming oscillatory circuit is disconnected by D4 but by SW2 and calls out being connected of triggering driving circuit R3, can not make a call by a low call circuit.When tamper triggered, SW2 triggered driving circuit R3 to C4 with calling and is connected, and the electric charge of C4 drags down call circuit to the Q1 conducting by R3 and makes a call, and doorway machine or ladder-port machine circuit will have power supply after calling out, thereby the dismantling-proof alarming oscillatory circuit is started working; The output IC1-3 of dismantling-proof alarming oscillatory circuit is connected with R3 by D4 and SW2, periodically by the low call circuit in Q1 position, calls out the equipment such as indoor set, finishes dismantling-proof alarming.
Such as Fig. 6, it is the workflow diagram of described doorway machine dismantling-proof alarming circuit.Tamper does not trigger, and obtains power supply from call circuit and does not work and export unsettled to the capacitor charging oscillatory circuit; Tamper triggers, and the capacitor discharge of charging connects call circuit by the calling driving low, and oscillatory circuit output drives with calling and is connected; Machine or ladder-port machine circuit obtain power supply in front of the door, and oscillatory circuit is started working; Oscillatory circuit is periodically by calling out the equipment such as call circuit being connect low, calling indoor set that drives.
Claims (1)
1. a doorway machine dismantling-proof alarming circuit comprises in front of the door machine or ladder-port machine circuit, it is characterized in that: also comprise dismantling-proof alarming oscillatory circuit and tamper detection and trigger circuit, the power supply of machine or ladder-port machine circuit links to each other with the dismantling-proof alarming oscillatory circuit in front of the door; The call circuit of machine or ladder-port machine circuit links to each other with trigger circuit with the tamper detection in front of the door; The vibration output of dismantling-proof alarming oscillatory circuit links to each other with trigger circuit with the tamper detection; Described dismantling-proof alarming oscillatory circuit will produce vibration when Power supply is arranged, described tamper detection and trigger circuit are comprised of with calling triggering driving circuit tamper detector switch and the standby charging circuit of a single-pole double-throw (SPDT) or dpdt double-pole double-throw (DPDT), finish tamper and detect and call out the accumulation of energy that simultaneously realization of driving is called out first.
2. described doorway machine dismantling-proof alarming circuit according to claim 1, it is characterized in that: the oscillation frequency of described dismantling-proof alarming oscillatory circuit is 0.25Hz ~ 0.1Hz, and to adjust its dutycycle according to the pulse width signal of calling out be 2% ~ 30%.
3. described doorway machine dismantling-proof alarming circuit according to claim 1, it is characterized in that: the power supply of described dismantling-proof alarming oscillatory circuit is by machine or ladder-port machine circuit are powered by diode D1 in front of the door, again by after capacitor C 1 filtering, by chip IC 1, capacitor C 2 and C3, resistance R 1 and R2, diode D2 and D3 form oscillatory circuit, its dutycycle can be passed through resistance R 1 and R2, capacitor C 3 is regulated, formula is: T=T1+T2, wherein T1 is vibration output high level time, value was at 0.1 second ~ 1 second, T2 is the vibration output low level time, value was at 3 seconds ~ 10 seconds, and T is time oscillation period.
4. described doorway machine dismantling-proof alarming circuit according to claim 1, it is characterized in that: described tamper detection and trigger circuit are comprised of breaking-proof switch SW2, triode Q1, resistance R 3 and R4 calls out the triggering driving circuit, forms the standby charging circuit by diode D5, resistance R 5 and capacitor C 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220744592 CN203242115U (en) | 2012-12-29 | 2012-12-29 | Entrance machine tamper alarm circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220744592 CN203242115U (en) | 2012-12-29 | 2012-12-29 | Entrance machine tamper alarm circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203242115U true CN203242115U (en) | 2013-10-16 |
Family
ID=49319387
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220744592 Withdrawn - After Issue CN203242115U (en) | 2012-12-29 | 2012-12-29 | Entrance machine tamper alarm circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203242115U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103123737A (en) * | 2012-12-29 | 2013-05-29 | 冠林电子有限公司 | Tamper alarm circuit for doorphone |
| CN107804440A (en) * | 2017-10-20 | 2018-03-16 | 先进院（深圳）科技有限公司 | A kind of fishing boat locating alarming equipment |
| CN110456202A (en) * | 2019-08-23 | 2019-11-15 | 中控智慧(广东)科技有限公司 | A kind of tamper machine testing control circuit and electronic equipment |
-
2012
- 2012-12-29 CN CN 201220744592 patent/CN203242115U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103123737A (en) * | 2012-12-29 | 2013-05-29 | 冠林电子有限公司 | Tamper alarm circuit for doorphone |
| CN103123737B (en) * | 2012-12-29 | 2016-06-01 | 冠林电子有限公司 | Doorway machine tamper warning circuit |
| CN107804440A (en) * | 2017-10-20 | 2018-03-16 | 先进院（深圳）科技有限公司 | A kind of fishing boat locating alarming equipment |
| CN107804440B (en) * | 2017-10-20 | 2020-06-16 | 先进院（深圳）科技有限公司 | Positioning alarm equipment for fishing boat |
| CN110456202A (en) * | 2019-08-23 | 2019-11-15 | 中控智慧(广东)科技有限公司 | A kind of tamper machine testing control circuit and electronic equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203242115U (en) | Entrance machine tamper alarm circuit | |
| US8232771B2 (en) | Battery gas gauge reset mechanism | |
| CN105739398A (en) | Single-fire electric consumption intelligent switch and control system thereof | |
| CN103199311A (en) | Battery power saving method and battery power saving apparatus for portable electronic product, and mobile terminal | |
| CN104464138B (en) | Solar multiplex recognition anti-theft monitoring early warning system low in power consumption | |
| CN107102625A (en) | Intelligent household management system | |
| CN203722216U (en) | Mobile terminal protection circuit and mobile terminal | |
| CN103123737A (en) | Tamper alarm circuit for doorphone | |
| CN201405618Y (en) | Camera shooting pen with monitoring function | |
| CN108516428B (en) | Elevator thing networking equipment | |
| CN201409203Y (en) | Camera with automatic monitoring system | |
| CN101945164B (en) | 2.4 G wireless alarming telephone | |
| CN201111697Y (en) | Anti-theft alarm using wireless network | |
| CN109386182A (en) | A kind of intelligent remote remote control cabinet based on NB-IoT | |
| CN201328146Y (en) | Antitheft outdoor repeater equipment | |
| CN107171443A (en) | A kind of intelligent power shows system and method | |
| CN209342151U (en) | A kind of well lid unusual fluctuation intelligent monitoring terminal | |
| CN208569806U (en) | Support the infrared detection device of the wired and wireless alarm communication system mode of realization | |
| CN203288028U (en) | Monitoring alarm system based on intelligent terminal | |
| CN103186972A (en) | A theft detection device and a theft detection system | |
| CN201638329U (en) | Indoor ultrasonic anti-theft alarm device | |
| CN202014334U (en) | Remote wireless monitoring video device | |
| CN202025204U (en) | Wireless intelligent monitoring system | |
| CN201327673Y (en) | Sub computer of security protection interconnected system | |
| CN108053613A (en) | A kind of intelligent guarding system for reducing injury of falling |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20131016 Effective date of abandoning: 20160601 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |