CN2814537Y - Video-frequency monitoring front end equipment anti-violent destroying alarming linkage system - Google Patents
Video-frequency monitoring front end equipment anti-violent destroying alarming linkage system Download PDFInfo
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- CN2814537Y CN2814537Y CN 200520026951 CN200520026951U CN2814537Y CN 2814537 Y CN2814537 Y CN 2814537Y CN 200520026951 CN200520026951 CN 200520026951 CN 200520026951 U CN200520026951 U CN 200520026951U CN 2814537 Y CN2814537 Y CN 2814537Y
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- monitoring front
- end equipment
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Abstract
The utility model relates to video frequency monitoring front end equipment anti-violent destroying alarming linkage device which belongs to the field of the video frequency monitoring equipment. The utility model is mainly characterized in that an impact sensor and video frequency monitoring front end equipment are rigidly connected. The sensor outputs TTL compatible high electrical level or low electrical level by the signal transformation, signal amplification and rectifying of a control circuit through a comparator. The utility model is provided with the impact sensor which can recognize the difference among the normal running of the equipment, the environment natural sound and the abnormal vibration generated by impact, and the impact sensor forwardly detects destroying actions for the equipment caused by external force, and simultaneously reports the message of the equipment, such as the ID message, etc., which is attacked to the system by communication links in order that the system can adopt corresponding measures.
Description
Technical field
The utility model belongs to the video monitoring equipment field, and as The Cloud Terrace, video camera etc., the anti-violence of especially a kind of video monitoring front end equipment destroys the alarm linkage device.
Background technology
The problem of the inherently safe of the video camera of safety precaution video monitoring front end equipment, The Cloud Terrace and high speed ball-shaped cloud platform video camera etc. and antagonism malicious sabotage is subject to people's attention day by day.General video monitoring front end equipment is installed in that the normal person can find but the occasion that is difficult for touching, so have following several to its insurgent violence means: 1. utilize club or axe, hammer etc. to impact; 2. throw hard objects to equipment at a distance; 3. launch bullet, bullet etc. by emission tool to equipment.These attack means all are that impact is acted directly on by on the guard shield of the equipment of attack, the ball cover, thereby make the shell of equipment produce the vibration that the duration is very short, intensity is very big.This vibration is mechanical vibration, has the vibration characteristics of sound wave, makes equipment impaired easily.Therefore the destruction to the said equipment that caused by external force of active probe, the information reporting systems such as device id that will be attacked by communication link so that system can take Corresponding Countermeasures, are very necessary simultaneously.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, provides a kind of simple in structure, but active probe is destroyed the alarm linkage device by the anti-violence of the video monitoring front end equipment of the destruction of the caused the said equipment of external force.
The utility model solves its technical matters and takes following technical scheme to realize:
The anti-violence of this video monitoring front end equipment destroys the alarm linkage device, be packed on the video monitoring front end equipment, it is characterized in that: impact microphone and video monitoring front end equipment are for being rigidly connected, and this sensor arrives the interface of microcontroller by conversion of signals, signal amplification and the rectification of control circuit, by comparer output TTL compatible high level or low level.
The connection of control circuit is such:
The in-phase end of impact microphone SEN1 series capacitance C2 and resistance R 3 and concatenation operation amplifier U1A, the diode D1 that connects afterwards also connects the integrating circuit that is made of resistance R 5 and capacitor C 3, carrying out direct current through operational amplifier U1B then amplifies, its output terminal connects the end of oppisite phase of two comparer U3A, U3B respectively, and ALM1, ALM2 output output TTL compatible high level by comparer or low level are to the interface of microcontroller.
And the basic sensing element of described impact microphone is a minisize electret microphone.
And described control circuit provides reference power supply by reference voltage source generator U2.
And described video monitoring front end equipment comprises video camera, The Cloud Terrace and high speed ball-shaped cloud platform video camera.
Advantage of the present utility model and beneficial effect are:
The difference of the abnormal vibrations that be provided with that impact microphone can identification equipment runs well, naturally sound and bump produces.The signal that bump produces is further analyzed, and device is made the inner audible-visual annunciator of trigger equipment, and sent warning message immediately to communication media or trigger responses such as sound and light alarm and transmission warning message simultaneously according to the size of signal intensity.This warning linkage is installed in the inside of the said equipment, the destruction that active probe is caused by external force to the said equipment, and information reporting systems such as device id that will be attacked by communication link simultaneously are so that system can take Corresponding Countermeasures.
Form that parts of the present utility model select that cost is lower, frequency response is broad for use, non-directive characteristic, the little lightweight electret microphone of volume be as the primary element of impact microphone.Certainly, any sensor that can survey this impact can adopt in this device.
Description of drawings
Fig. 1 is an electrical schematic diagram of the present utility model;
Fig. 2 is an embodiment block scheme of the present utility model;
Fig. 3 is an application example scheme of installation of the present utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model embodiment is further described:
Electrical principle of the present utility model as shown in Figure 1.Video monitoring front end equipment comprises video camera, The Cloud Terrace and high speed ball-shaped cloud platform video camera.According to installation space, device can be designed to a complete assembly, also sensor and circuit part can be designed to two assemblies respectively, and sensor only is electrically connected with circuit part.But no matter adopt which kind of mode, must guarantee during installation that the housing of sensor and equipment is combined closely (being rigidly connected) existence very close to each other.Present embodiment is an example with the monopod video camera in Fig. 3, has introduced being connected of impact microphone and monopod video camera: impact microphone 2 by trip bolt 3 firmly be installed in (comprising packing ring etc.) inside of video camera 1, near on the position that easily go to pot, that do not influence equipment operation.
Impact microphone as basic sensing element, has jointly been formed impact microphone with Fig. 1 circuit with minisize electret microphone SEN1.This electret microphone all has very smooth response to whole audible spectrum almost, and is highly sensitive, wide dynamic range.But can not directly do impact microphone with it here, (voice, bigger wind and rain sound, car engine sound etc.) also can act on and produce electric signal on the sensor because the sound of equipment when running well, the natural phonation of conditions for equipment use.Interrelated data shows, the sound intensity of these sound roughly at 70dB (indoor environment) to 80dB (outdoor environment).We are worth threshold value lower limit as " bump " power with this, and equipment normal operation noise is much smaller than the intensity of neighbourhood noise.
As basic sensing element, formed impact microphone jointly with minisize electret microphone SEN1 with Fig. 1 circuit.Electret microphone all has very smooth response to whole audible spectrum almost, and is highly sensitive, wide dynamic range.But can not directly do impact microphone with it here, (voice, bigger wind and rain sound, car engine sound etc.) also can act on and produce electric signal on the sensor because the sound of equipment when running well, the natural phonation of conditions for equipment use.Interrelated data shows, the sound intensity of these sound roughly at 70dB (indoor environment) to 80dB (outdoor environment).We are worth threshold value lower limit as " bump " power with this, and equipment normal operation noise is much smaller than the intensity of neighbourhood noise.
SEN1 will convert electric signal to owing to the mechanical oscillation that vibrations produce, and be added in operational amplifier U1A in-phase end by C2, R3.(signal about 1KHz there are enough gains, the signal that is higher than 1KHz is decayed fully and U1A is designed to active low pass gain amplifier.
Diode D1 carries out rectification with the output low frequency AC signal of U1A, and the integrating circuit of forming through R5, C3 becomes approximate direct current signal, carries out direct current through U1B again and amplifies, and its output is added in the end of oppisite phase of two comparer U3A, U3B respectively.U2 is a reference voltage source generator, provides stable reference voltage by R11, R15 for U3A, U3B.Under the normal condition, the ALM1 of comparer and ALM2 all export the TTL compatible high level.Because R11, R15 be programmable partial pressure device, they can make ALM1 in vibration signal output TTL compatible low level during more than or equal to 80dB, make ALM2 in vibration signal output TTL compatible low level during more than or equal to 90dB.
ALM1, ALM2 are directly and the I/O interface (see figure 2) of microcontroller (MCU).Usually MCU is except that as the PTZ controller, also with communication network (as universal serial bus, Ethernet etc.) interface.ALM1 and ALM2 can activate the interrupt system of MCU.
When the interruption of MCU is activated by ALM1; MCU can be by communication network interface equipment transmission to the back-end warning message; also can trigger simultaneously onsite alarming device (hummer or light etc.); explanation destruction dynamics was stronger when ALM2 was effective; except sending warning message; the all right linkage camera protection mechanism of PTZ controller can normally move with assurance equipment.Certainly, the warning passage also can increase as required or reduce (for example have only ALM1 or increase ALM3 ...).
Circuit according to Fig. 1, the impact microphone entire circuit can be comprised that SEN1 is integrated in the very little printed board of area, firmly be installed on clipping the ball or The Cloud Terrace inside, the close position that easily go to pot, that do not influence equipment operation, be connected with the PTZ controller by several leads, because the power demand of sensor is small, so can provide power supply for it by the PTZ controller.
Some electronic devices and components and connection that the utility model is indicated in circuit owing to be routine techniques, are not all illustrated.
Claims (5)
1. the anti-violence of video monitoring front end equipment destroys the alarm linkage device, be packed on the video monitoring front end equipment, it is characterized in that: impact microphone and video monitoring front end equipment are for being rigidly connected, and this sensor arrives the interface of microcontroller by conversion of signals, signal amplification and the rectification of control circuit, by comparer output TTL compatible high level or low level.
2. the anti-violence of video monitoring front end equipment according to claim 1 destroys the alarm linkage device, and it is characterized in that: the connection of control circuit is such:
The in-phase end of impact microphone SEN1 series capacitance C2 and resistance R 3 and concatenation operation amplifier U1A, the diode D1 that connects afterwards also connects the integrating circuit that is made of resistance R 5 and capacitor C 3, carrying out direct current through operational amplifier U1B then amplifies, its output terminal connects the end of oppisite phase of two comparer U3A, U3B respectively, and ALM1, ALM2 output output TTL compatible high level by comparer or low level are to the interface of microcontroller.
3. the anti-violence of video monitoring front end equipment according to claim 1 and 2 destroys the alarm linkage device, and it is characterized in that: the basic sensing element of described impact microphone is a minisize electret microphone.
4. the anti-violence of video monitoring front end equipment according to claim 1 and 2 destroys the alarm linkage device, and it is characterized in that: described control circuit provides reference power supply by reference voltage source generator U2.
5. the anti-violence of video monitoring front end equipment according to claim 1 and 2 destroys the alarm linkage device, and it is characterized in that: described video monitoring front end equipment comprises video camera, The Cloud Terrace and high speed ball-shaped cloud platform video camera.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520026951 CN2814537Y (en) | 2005-08-09 | 2005-08-09 | Video-frequency monitoring front end equipment anti-violent destroying alarming linkage system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520026951 CN2814537Y (en) | 2005-08-09 | 2005-08-09 | Video-frequency monitoring front end equipment anti-violent destroying alarming linkage system |
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| Publication Number | Publication Date |
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| CN2814537Y true CN2814537Y (en) | 2006-09-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520026951 Expired - Fee Related CN2814537Y (en) | 2005-08-09 | 2005-08-09 | Video-frequency monitoring front end equipment anti-violent destroying alarming linkage system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101841697A (en) * | 2010-04-12 | 2010-09-22 | 无锡中星微电子有限公司 | Monitoring system and monitoring device thereof |
| CN103364075A (en) * | 2012-03-31 | 2013-10-23 | 海洋王照明科技股份有限公司 | Light fixture vibration detecting circuit, light fixture vibration detecting device and light fixture |
| CN109246396A (en) * | 2018-10-26 | 2019-01-18 | 衡阳师范学院 | Rural tourism sight spot monitoring and alarming system and its implementation |
| CN111147723A (en) * | 2019-12-30 | 2020-05-12 | 陕西格兰浮智能科技有限公司 | Explosion-proof protecting against shock high definition is network ball machine under water |
-
2005
- 2005-08-09 CN CN 200520026951 patent/CN2814537Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101841697A (en) * | 2010-04-12 | 2010-09-22 | 无锡中星微电子有限公司 | Monitoring system and monitoring device thereof |
| CN101841697B (en) * | 2010-04-12 | 2012-08-29 | 无锡中星微电子有限公司 | Monitoring system and monitoring device thereof |
| CN103364075A (en) * | 2012-03-31 | 2013-10-23 | 海洋王照明科技股份有限公司 | Light fixture vibration detecting circuit, light fixture vibration detecting device and light fixture |
| CN103364075B (en) * | 2012-03-31 | 2017-10-24 | 海洋王照明科技股份有限公司 | Light fixture vibration detection circuit, device and light fixture |
| CN109246396A (en) * | 2018-10-26 | 2019-01-18 | 衡阳师范学院 | Rural tourism sight spot monitoring and alarming system and its implementation |
| CN111147723A (en) * | 2019-12-30 | 2020-05-12 | 陕西格兰浮智能科技有限公司 | Explosion-proof protecting against shock high definition is network ball machine under water |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: TIANJIN YA AN TECH. CO., LTD. Free format text: FORMER NAME: YAAN SCIENCE + TECHNOLOGY ELECTRONIC CO., LTD., TIANJIN |
|
| CP03 | Change of name, title or address |
Address after: 300384 Tianjin City Huayuan Industrial Zone Ziyuan Road No. 8 Patentee after: Tianjin Yaan Technology Co., Ltd. Address before: Ziyuan road 300384 Tianjin Huayuan Industrial Park No. 8 Patentee before: Yaan Science & Technology Electronic Co., Ltd., Tianjin |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060906 Termination date: 20130809 |