CN100580724C - Light transmitted infrared detector - Google Patents
Light transmitted infrared detector Download PDFInfo
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- CN100580724C CN100580724C CN200510100905A CN200510100905A CN100580724C CN 100580724 C CN100580724 C CN 100580724C CN 200510100905 A CN200510100905 A CN 200510100905A CN 200510100905 A CN200510100905 A CN 200510100905A CN 100580724 C CN100580724 C CN 100580724C
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- 238000001514 detection method Methods 0.000 claims abstract description 16
- 238000012545 processing Methods 0.000 claims description 10
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 230000003287 optical effect Effects 0.000 claims description 5
- 230000000903 blocking effect Effects 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 abstract description 4
- 230000001681 protective effect Effects 0.000 abstract description 3
- 239000000523 sample Substances 0.000 description 15
- 238000012544 monitoring process Methods 0.000 description 5
- 230000009545 invasion Effects 0.000 description 4
- 230000007123 defense Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
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- 238000010586 diagram Methods 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
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Abstract
The detector includes an infrared transmission module, infrared reception module, alarming host connected to each other in cascaded loop. The infrared transmission module sends out infrared detection beam. The infrared reception module receives infrared detection beam. Based on whether the infrared detection beam is shut off, the alarming host sends out alarming signal. Including infrared modulator and infrared emitter connected in series, the infrared sending module sends out infrared detection beam with carrier signal including cryptographic informational message. Thus, protective capability and interference killing feature are enhanced. The message contains ID address of each detector so as to be able to determine alarming area correctly. Therefore the invention is applicable to larger area such as bounding wall. The message contains state information for detector so as to enhance own protection capability.
Description
[technical field]
The present invention relates to the infrared detection technique of safety defense monitoring system, relate in particular to a kind of light transmitted infrared detector.
[background technology]
Safety defense monitoring system is the important component part in intelligent dwelling district.Operated by rotary motion security personnel security management center in the residential area, each security monitoring subsystem main frame and opertaing device are arranged in the security personnel center, safety monitoring system is made of periphery and environment warning system (peripheral guard against theft and alarm system, closed-circuit TV monitoring system, patrol system), building conversational system and home security warning system, set up defenses in depth, monitor closely, integrated management, allow the owner live among the invisible anti-theft net, on the contrary than tangible anti-theft net safer and more comfortable.
The infrared detecting set that is used for peripheral burglary-resisting system is made up of infrared ray correlation device and receiver, alarm host machine and transmission yarn usually, as shown in Figure 1.Around the residential area, install some groups of infrared transmitter and receiver on the enclosure wall; Get over wall (blocking infrared ray) and fashionable, alarm host machine is sent alerting signal immediately when infrared remote receiver detects the someone, and the display alarm zone; The infrared acquisition distance has 20m, 30m to 200m multiple choices.Alarm host machine can also be reported to the police automatically to 110 alarm centers.The home security warning system is made up of security personnel's centre management main frame, home alarm device, various kinds of sensors and transmission yarn.The stolen point of penetration of family mainly is door and window. newer window and the balcony technology of deploying troops on garrison duty adopts " curtain-type infrared probe ", protects window and balcony by very thin one deck electron beam.
Survey infrared ray and must be transferred to specific frequency, receptacle correspondingly is furnished with frequency, phase identification of circuit, to prevent other interference of light sources.Infrared ray correlation device and receiver on the market all have fixing specification, so the general relative fixed of its infrared frequency scope is known by the people easily.In addition, owing to the widespread use of infrared ray in field of household appliances, such as the telepilot of televisor, air-conditioning can provide infrared light sources.Because the versatility of market infrared ray components and parts causes the infrared frequency of various telepilots on used infrared frequency of burglary-resisting system and the market to coincide easily; On the other hand, because the development of modern high technology, individual or criminal organization can produce the infrared light sources of corresponding frequencies section fully at the frequency of infrared detecting set, can be used for shielding burglary-resisting system.When the people is interdicted infrared ray, can be by infrared light sources (such as TV remote controller) being radiated on the receiver in the infrared detecting set, infrared detecting set is surveyed and is interdicted less than infrared ray like this, can not produce alerting signal, thereby make burglary-resisting system lose due function.
The problem that solves alarm region in the prior art adopts alarm host machine infrared sensor to be linked to each other separately with each by cable usually, like this, when the zone of deploying troops on garrison duty bigger, especially deploy troops on garrison duty for the enclosure wall of large-scale sub-district, many cables need be set carry out entad being connected of type with main frame, caused the inconvenience of construction like this, the antitheft patrol that depends on manpower more of enclosure wall does not in the prior art obtain adequate solution technically basically.
[summary of the invention]
The technical problem to be solved in the present invention provides a kind of light transmitted infrared detector, utilizes light to transmit the principle of carrier wave, even make the frequency of copying infrared detecting set, also can not influence the warning of infrared detecting set, the security that has improved burglary-resisting system.
Further aim of the present invention is to arrange continuously by the series connection of many groups of probes, solved enclosure wall etc. and reported to the police on a large scale and deploy troops on garrison duty.
The present invention realizes by following technical scheme:
A kind of light transmitted infrared detector, comprise that infrared sending module, infrared receiving module and alarm host machine are unified into the serial connection loop, infrared sending module sends the infra-red detection light beam, infrared receiving module receiving infrared-ray detecting light beam, whether alarm host machine is sent alarm signal by blocking according to the infra-red detection light beam, described infrared sending module comprises the infrared modulator and the infrared transmitter of mutual serial connection, and the infra-red detection light beam that is sent has the carrier signal of enciphered message message.
The present invention further improves and is: the address information of infrared sending module and the enciphered data that is provided by alarm host machine are provided described enciphered message message.
The present invention further improves and is: between infrared sending module and infrared receiving module, also comprise at least one infrared transceiver module of serial connection each other; On receiving, after one group of infra-red detection light beam, write the address information of self after described infrared transceiver module is decoded to described enciphered message, newer message is sent to next module after modulation adds the infra-red detection light beam.
The present invention further improves and is: described infrared transceiver module comprises optical system, infrared sensor, mould/number conversion circuit, signal processing system, D/A switch circuit, infrared modulator and the infrared transmitter of series connection.
The present invention further improves and is: the signal processing system of described infrared transceiver module is connected by cable with alarm host machine.
Because adopted above technical scheme, the infra-red detection light beam that infrared detecting set uses has carried out data encryption, and is strong to the protective capability of whole burglary-resisting system, unlikely shielded by other infrared light supplies, antijamming capability is strong.Owing to adopt many group probe arranged in series, comprised the ID address of each probe module in the message, can judge the warning location exactly; Efficiently solve the problems of deploying troops on garrison duty continuously such as enclosure wall on a large scale.The status information that has comprised probe in the message is to the also enhancing greatly of protective capability of detector self.
[description of drawings]
Fig. 1 is existing infrared detecting set structural representation.
Fig. 2 is a kind of structure principle chart of light transmitted infrared detector.
Fig. 3 is the structured flowchart of infrared transceiver module.
Fig. 4 is the workflow diagram of light transmitted infrared detector.
Fig. 5 is the structure principle chart of another kind of light transmitted infrared detector.
[embodiment]
As shown in Figure 2, light transmitted infrared detector comprises four probes, and promptly infrared sending module A, infrared transceiver module B, infrared transceiver module C, infrared receiving module D and alarm host machine are unified into the serial connection loop and form.Infrared sending module A comprises the infrared modulator and the infrared transmitter of mutual serial connection, and alarm host machine is connected with infrared modulator, and a message information that comprises 36 is provided, and its form is as shown in the table:
| 24 ID addresses | 8 bit encryption data | 4 correction bits |
Wherein 24 ID addresses are used for putting down in writing the address information of infrared sending module A, and 8 bit encryption data are provided by alarm host machine at first, such as are one group of numerals at random; Also added the status information that sends ultrared probe during through infrared probe, such as frequency, intensity etc.Message information is sent out by infrared transmitter through infrared modulator modulation back and has the infrared beam of encrypting the message carrier wave.
As shown in Figure 3 and Figure 4, infrared transceiver module comprises optical system, infrared sensor, mould/number conversion circuit, signal processing system, D/A switch circuit, infrared modulator and the infrared transmitter of series connection.The optical system of infrared transceiver module B receives the carrier wave infrared beam that infrared sending module A sends, become digital signal through infrared sensor, mould/number conversion circuit reduction, pass through signal Processing, be decrypted and encrypt, the address information of module B is inserted 24 ID address portions in the message, through D/A switch circuit, infrared modulator and infrared transmitter finished carrier wave infrared beam is handed down again.When the infrared transceiver module C that is connected in series through the centre, similarly handle again.A, B, three modules of C adopt the infrared transmitter of model of the same race, and the infrared light beam frequency that is sent all is consistent.Up to arriving final infrared receiving module D.Infrared receiving module D comprises that the first half of infrared transceiver module is a receiving unit, i.e. Chuan Lian optical system, infrared sensor, mould/number conversion circuit, signal processing system.Message information arrives alarm host machine through signal processing system reduction back.
Alarm host machine is inspected message information, and the encrypted content that enciphered message is decrypted and stored originally compares, and confirms the infrared beam whether suffered infrared beam sent originally.If suffered infrared beam does not contain message or enciphered message can't be confirmed, then send alarm signal.Judge that according to the address information that comprises in the message information invasion has taken place which section again.Under the normal condition, the carrier wave light beam is erected one protection network between four probes, and when the invasion accident did not take place, the final message that alarm host machine receives should comprise four address informations that probe is whole.Interdicted between A, B, invasion has promptly taken place, the address information in the message will not comprise the address of A; Interdicted between B, C, the address information in the message will not comprise the address of A, B.Similarly, when after the infrared ray in one section interval interdicted, then can not comprise the address of probe the last period in the address information.Just can to judge be that invasion has taken place in which section interval to alarm host machine like this.Owing to adopted ciphered data in the message, and ciphered data sets in advance by alarm host machine, is not easy invaded person and cracks, and the invador is very difficult like this shields burglary-resisting system with common telepilot or homemade infrared light supply.Series connection constitutes burglary-resisting system between A, B, C, the D, and only need can realize the closed-loop path at two cables of two terminations between the main frame, has solved the construction problem of deploying troops on garrison duty of the medium-and-large-sized community of prior art.
Shown in Figure 5 is an alternative embodiment of the invention.On the basis of Fig. 2, the signal processing unit of probe B, C, D has cable to lead to alarm host machine respectively.Its principle of work and Fig. 2 are similar.Different is, when next one probe is received the carrier wave light beam that a last probe transmits, through after the signal Processing, except that continuing to send carrier wave light beam to next probe, also directly message is passed to alarm host machine simultaneously.When being interdicted simultaneously between AB section and the CD section, alarm host machine can be distinguished alarm region very accurately like this.
Claims (3)
1, a kind of light transmitted infrared detector, comprise infrared sending module, infrared receiving module and alarm host machine are unified into the serial connection loop, infrared sending module sends the infra-red detection light beam, infrared receiving module receiving infrared-ray detecting light beam, whether alarm host machine is sent alarm signal by blocking according to the infra-red detection light beam, described infrared sending module comprises the infrared modulator and the infrared transmitter of mutual serial connection, the infra-red detection light beam that is sent has the carrier signal of enciphered message message, the address information of infrared sending module and the enciphered data that is provided by alarm host machine are provided described enciphered message message, it is characterized in that: between infrared sending module and infrared receiving module, also comprise at least one infrared transceiver module of serial connection each other; On receiving, after one group of infra-red detection light beam, write the address information of self after described infrared transceiver module is decoded to described enciphered message, newer message is sent to next module after modulation adds the infra-red detection light beam.
2, light transmitted infrared detector according to claim 1 is characterized in that: described infrared transceiver module comprises optical system, infrared sensor, mould/number conversion circuit, signal processing system, D/A switch circuit, infrared modulator and the infrared transmitter of series connection.
3, light transmitted infrared detector according to claim 2 is characterized in that: the signal processing system of described infrared transceiver module is connected by cable with alarm host machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200510100905A CN100580724C (en) | 2005-11-07 | 2005-11-07 | Light transmitted infrared detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200510100905A CN100580724C (en) | 2005-11-07 | 2005-11-07 | Light transmitted infrared detector |
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| Publication Number | Publication Date |
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| CN1760923A CN1760923A (en) | 2006-04-19 |
| CN100580724C true CN100580724C (en) | 2010-01-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200510100905A Active CN100580724C (en) | 2005-11-07 | 2005-11-07 | Light transmitted infrared detector |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102592386A (en) * | 2012-03-15 | 2012-07-18 | 梁红 | Node type alarming technical method of active infrared intrusion detector |
| CN104899993A (en) * | 2015-05-04 | 2015-09-09 | 北京力城通捷技术有限公司 | Optical intrusion detection apparatus and method |
| CN109637064B (en) * | 2019-01-29 | 2021-06-11 | 深圳市汉明电子有限公司 | Object deformation early warning monitoring system and method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2266166Y (en) * | 1996-08-29 | 1997-10-29 | 苏洪峰 | Heat release external wireless theftproof device |
| US5917425A (en) * | 1996-01-22 | 1999-06-29 | Wireless Communiations Products, Llc | IR/RF locator |
| CN2329053Y (en) * | 1997-12-22 | 1999-07-14 | 王迎华 | Aggregation type multi-channel alarm |
-
2005
- 2005-11-07 CN CN200510100905A patent/CN100580724C/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5917425A (en) * | 1996-01-22 | 1999-06-29 | Wireless Communiations Products, Llc | IR/RF locator |
| CN2266166Y (en) * | 1996-08-29 | 1997-10-29 | 苏洪峰 | Heat release external wireless theftproof device |
| CN2329053Y (en) * | 1997-12-22 | 1999-07-14 | 王迎华 | Aggregation type multi-channel alarm |
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| Publication number | Publication date |
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| CN1760923A (en) | 2006-04-19 |
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Effective date of registration: 20100324 Address after: Longgang District of Shenzhen City, Guangdong province 518116 Longgang Zhenlong Donglan waterway No. 32 America science and Technology Park Patentee after: Shenzhen Meian Technology Co., Ltd. Address before: 518172 Hongji garden, central city, Longgang District, Guangdong, Shenzhen 6-405 Patentee before: Pi Youlin |