CN2632786Y - Infrared detector - Google Patents
Infrared detector Download PDFInfo
- Publication number
- CN2632786Y CN2632786Y CN 03245476 CN03245476U CN2632786Y CN 2632786 Y CN2632786 Y CN 2632786Y CN 03245476 CN03245476 CN 03245476 CN 03245476 U CN03245476 U CN 03245476U CN 2632786 Y CN2632786 Y CN 2632786Y
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- China
- Prior art keywords
- light
- light projector
- receiving device
- infrared
- cpu
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- Expired - Fee Related
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Abstract
The utility model discloses an infrared detector, comprising a light projector which is provided with a light projection unit that can projects light beam, a circuit framework is provided with a CPU program encoder and a power amplifier control. The CPU program encoder produces certain encoding signals which are projected to a distant light pick up machine through power amplifying. The light pick up machine at the corresponding end is provided with a matched infrared ray receiver to receive light beams from the light projector. The light pick up circuit framework is provided with a light pick up signal amplifier, a CPU program calculation comparison decoder and an out put controlling unit. The infrared ray receivers of the light pick up are independent receiving units, once receiving the infrared encoding signals of the light projector, the infrared encoding signals will be immediately be amplified by a light pick up signal amplifier before be processed with decoding and calculation through a CPU program calculation and comparison decoder to control the output controller. The utility model has the advantages of high degree of protection and is not easy to be damaged.
Description
＜one〉technical field under
The utility model system provides a kind of ultrared sensing device, refers to a kind of ultrared sensing device with high security protection sexual function especially, and can improve traditional type ultrared sensing device and subject to the person who is ambitious or tenacious of purpose and crack, and the disappearance and the drawback of forfeiture ultrared sensing safeguard function.
＜two〉background technology
Commercially available common ultrared sensing device, its structure all is made of jointly the single light projector single light-receiving device of arranging in pairs or groups, manner of execution system separates corresponding in opposite directions being arranged in the effective light reconnaissance range with light projector and light-receiving device, then the projecting unit of light projector is aimed at infrared receiver projecting beam towards light-receiving device, the infrared receiver of opposite end light-receiving device then accepts to come from the light beam that light projector throws, constitute as rail mounted protection light beam with this, if being subjected to any object or the thieves or robbers who act under cover of night's intrusion, disturbs when interdicting the startup signal that reaches default the track light beam that light projector and light-receiving device are constituted between the two, can (as frighten resistance formula illuminating lamp by other safeguards of automatic controlling and driving, alarm etc.), thus this contrast formula ultrared sensing device extensively be applied on security personnel's protection applications of buildings.According to the demand on degree of protection and the purposes, this contrast formula ultrared sensing device has roughly been distinguished single track light beam, double track light beam, and style such as multiple light beam; Wherein, the double track light beam is more common style, it can be taken precautions against as fallen leaves and cause interdicting misoperation, its operating principle is to be located at light projector light projector unit and the infrared receiver corresponding with light-receiving device respectively by two groups to be constituted jointly, be to maintain suitable spacing between the two light projector unit, so, when having only that wherein a rail light beam is interdicted, can't move, make and to take precautions against that the action that leads to errors takes place as fallen leaves, insect, the caused blocking light beam of birds; During start, the signal that must interdict the double track light beam simultaneously just can move (as thieves or robbers who act under cover of night's invasion), and therefore, buildings mostly generally adopts the ultrared sensing device of this double track light beam out of doors at present.
Though can reach detecting function on present traditional contrast formula double track ultrared sensing device surface with the protection of double track light beam, but in fact it is to belong to a kind of unsafe double track ultrared sensing system, because traditional contrast formula double track ultrared sensing device (please cooperate consult shown in Figure 1), the data that its transmitted beam transmitted is only just depended merely on the double track light projector unit 1A of light projector 1,1B one side launches light beam, the opposing party's the light-receiving device 2 of arranging in pairs or groups again afterwards equally also is provided with double track infrared receiver 2A, it (is the A shown in graphic that 2B constitutes, the B double track), have double track protection light beam though this setup can constitute, have following shortcoming in fact:
1, on effect (effect): having the inclination the personage, will to crack this traditional contrast formula double track ultrared sensing quite simple, as long as will be with label not even with the light projector 3 of label, with its light projector unit 3A, 3B closely is projected to a wherein infrared receiver 2A or the 2B (as shown in Figure 1) of aforementioned light-receiving device 2, perhaps as shown in as Fig. 2 with two light projector unit 3A of this light projector 3,3B directly closely is projected to two infrared receiver 2A of aforementioned light-receiving device 2,2B, so, light beam is detected in the double track protection that is made of light projector 1 and light-receiving device 2 originally, the coverage that light projector 3 that only remaining intentionally personage is set and light-receiving device are 2 is (as Fig. 1, L section shown in 2), cause the distance L 1 section forfeiture protective action of this light projector 3 to 1 of original light projector, as opening the doors, the thieves or robbers who act under cover of night can enter through wide open from here door easily, in other words, the ultrared sensing device that performs practically no function.
2, brought forward is stated, the vertical calculation thieves or robbers who act under cover of night do not know which is only real light-receiving device, as long as also utilize the light projector 1 and light-receiving device 2 projections of two light projectors to being arranged on two ends, then any effect can't take place in the contrast of two light projectors, yet another light projector throwed will inevitably corresponding light-receiving device, therefore, still can be had the inclination the personage to crack easily, have no any detecting protection and can say.
3, on maintaining secrecy: known ultrared sensing device all adopts the fixed single sign indicating number between because of light projector and light-receiving device on the transmission data, so real no any secret can saying.
4, in security, ultrared sensing device main application ties up to the protection of saving from damage in a kind of, and as not bringing into play its effect, real no security can be sayed.
The fundamental purpose of the utility model promptly is to provide a kind of ultrared sensing device, can prevent effectively that intentionally the personage cracks by the wherein infrared receiver that other light projectors are projected to light-receiving device with illegal dishonest method, really can bring into play the safeguard function of saving from damage of ultrared sensing device.
＜three〉summary of the invention
A kind of ultrared sensing device of the utility model is made of jointly light projector and light-receiving device, wherein:
Light projector, but the light projector unit of projecting beam had, and circuit framework is provided with CPU formula scrambler and power amplification control; Wherein, see through CPU formula scrambler calculation process and produce specific coding signal, through the light projector unit of light projector this infrared light beam that contains the controlling signal of encoding is projected to remote light-receiving device via power amplification control again;
The light-receiving device system of corresponding end is provided with the infrared receiver that pairing conforms to, with the light beam of accepting to be projected from light projector light projector unit, the light-receiving device circuit framework is provided with and is subjected to optical signal amplifier, CPU formula computing comparison demoder, reaches unit such as o controller; Receive in the control at infrared light beam, the infrared receiver system of light-receiving device belongs to independently receiving element separately, in case receive after the infra-red code signal of light projector, can see through immediately signal is amplified by optical signal amplifier, and decode and comparison calculation is handled through CPU formula computing comparison demoder, so that o controller is controlled automatically.
Wherein, this can be made of little signal amplifier and waveform shaper by optical signal amplifier.
Wherein, this CPU formula computing comparison demoder can be made of comparison controller and cpu decoder.
A kind of ultrared sensing device of the utility model, its advantage is: do not subject to crack, function of safety protection is strong.
＜four〉description of drawings
The synoptic diagram (one) that the known ultrared sensing device of Fig. 1 is cracked.
The synoptic diagram (two) that the known ultrared sensing device of Fig. 2 is cracked.
The one-piece construction calcspar of Fig. 3 the utility model embodiment ultrared sensing device.
The circuit diagram of Fig. 4 the utility model embodiment light projector.
The circuit diagram of Fig. 5 the utility model embodiment light-receiving device.
Number in the figure is as follows:
1,3 light projectors, 2 light-receiving devices
1A, 1B, 3A, 3B light projector unit 2A, 2B infrared receiver
4 light projectors, 5 light-receiving devices
4A, 4B light projector unit 5A, 5B infrared receiver
40,50 supply unit 41CPU formula scramblers
42 power amplifications control 51 is subjected to optical signal amplifier
52CPU formula computing comparison demoder 53 o controllers
510 little signal amplifier 511 waveform shapers
520 comparison controller 521CPU formula demoders
＜five〉embodiment
See also shown in Figure 3ly, a kind of ultrared sensing device of the utility model is to form a ultrared sensing device jointly by light projector and light-receiving device, has improved known person on its structure and has subjected to the disappearance drawback that cracks, and the structural design features that is presented is:
The internal circuit of light projector 4 (being example explanation to have double track light projector unit 4A, 4B now) is except being provided with necessary supply unit 40, and other is provided with CPU formula scrambler 41 and power amplification control 42 (please cooperate consult shown in Figure 4); Wherein, the calculation process that sees through CPU formula scrambler 41 can produce specific password, this password never repeats, the random number of the no regularity of arranging in pairs or groups again (personage is understood in order to avoid intentionally for this), therefore, can produce the coding controlling signal of mess code formula by CPU formula scrambler 41, this signal amplifies signal via power amplification control 42 again, and utilizes light projector unit 4A, the 4B of light projector 4 that this infrared ray that contains the controlling signal of encoding is projected to remote light-receiving device 5 through optically focused with light beam again.
And the light-receiving device 5 of corresponding end (please cooperate consult shown in Figure 5) is provided with double rail type infrared receiver 5A, 5B that pairing conforms to, to accept from light projector 4 light projector unit 4A, light beam that 4B was projected, light-receiving device 5 is except being provided with necessary supply unit 50, and other is provided with and is subjected to optical signal amplifier 51, CPU formula computing comparison demoder 52, reaches unit such as o controller 53; Wherein, can be constituted by little signal amplifier 510 and waveform shaper 511 by optical signal amplifier 51, and CPU formula computing comparison demoder 52 can be made of comparison controller 520 and cpu decoder 521; Receiving in the control, infrared receiver 5A, the 5B system of each light-receiving device 5 belongs to independent receiving element separately, in case receive after the infra-red code signal of light projector 4, can see through little signal amplifier 510 immediately again amplifies signal, and signal is sent to CPU formula demoder 521 through waveform shaper 511, can prestore in CPU formula demoder 521 and to accept single password, carry out after the computing comparison, but the required state of correct execution.
Because the utility model is with each the infrared receiver 5A on the light-receiving device 5,5B is designed to an independently arithmetic element, therefore, when each receives infra-red code signal from light projector 4 respectively as each infrared receiver 5A or 5B, the CPU formula that system the sees through light-receiving device 5 respectively calculation process of decoding separately, compare (just each rail light beam data is adopted decoding computing comparison control) respectively because adopt each, so, when even wherein an infrared receiver 5A or 5B produce situation about can not expect, also can not have influence on distinguishing and operating of other infrared receivers 5A or 5B, can fully reach effective and safe protection effect.
The utility model ultrared sensing device is when actual installation is used, even if intentionally personage's desire is projected to a wherein infrared receiver of the utility model light-receiving device by other light projectors, attempt to crack the infrared protection light beam that the utility model sets up, we definitely can't succeed predictably at this, because the infrared receiver of the utility model light-receiving device can't be accepted the infrared light beam of invalidated password or password not match, if intentionally the personage thrusts oneself in, then will inevitably touch o controller 53 actions on the light-receiving device 5, other safeguards of the automatic controlling and driving of can arranging in pairs or groups (as frighten resistance formula illuminating lamp, alarm etc.), therefore, have stronger protection safety function, the infrared receiver that can improve the traditional type light projector really subjects to crack the disappearance of forfeiture protection.
Be worth mentioning in addition and be stressed that, the infrared light beam track of the utility model ultrared sensing device light projector and light-receiving device, it is not the double track structure that only is confined among the embodiment, other are as single track, three rails, even multiple protection light beam also can, in addition, CPU formula scrambler 41 also can be supported a plurality of light projectors 4 (as shown in Figure 3) simultaneously by power amplification control 42.
Claims (3)
1, a kind of ultrared sensing device, it is characterized in that: it has:
Light projector, but the light projector unit of projecting beam had, and circuit framework is provided with CPU formula scrambler and power amplification control; Wherein, see through CPU formula scrambler calculation process and produce specific coding signal, through the light projector unit of light projector this infrared light beam that contains the controlling signal of encoding is projected to remote light-receiving device via power amplification control again;
The light-receiving device system of corresponding end is provided with the infrared receiver that pairing conforms to, with the light beam of accepting to be projected from light projector light projector unit, the light-receiving device circuit framework is provided with and is subjected to optical signal amplifier, CPU formula computing comparison demoder, reaches unit such as o controller; Receive in the control at infrared light beam, the infrared receiver system of light-receiving device belongs to independently receiving element separately, in case after receiving the infra-red code signal of light projector, can see through immediately signal is amplified by optical signal amplifier, and decode and comparison calculation is handled through CPU formula computing comparison demoder, so that o controller is controlled automatically.
2, a kind of ultrared sensing device according to claim 1 is characterized in that: this can be made of little signal amplifier and waveform shaper by optical signal amplifier.
3, a kind of ultrared sensing device according to claim 1 is characterized in that: this CPU formula computing comparison demoder can be made of comparison controller and cpu decoder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03245476 CN2632786Y (en) | 2003-04-17 | 2003-04-17 | Infrared detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03245476 CN2632786Y (en) | 2003-04-17 | 2003-04-17 | Infrared detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2632786Y true CN2632786Y (en) | 2004-08-11 |
Family
ID=34292470
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03245476 Expired - Fee Related CN2632786Y (en) | 2003-04-17 | 2003-04-17 | Infrared detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2632786Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102039872A (en) * | 2010-12-24 | 2011-05-04 | 深圳市航盛电子股份有限公司 | Anti-theft device of automobile and anti-theft method |
| CN105096484A (en) * | 2015-07-22 | 2015-11-25 | 福建升腾资讯有限公司 | Method for protecting core area of POS device |
| CN105139631A (en) * | 2015-08-11 | 2015-12-09 | 广东博威尔电子科技有限公司 | Code pairing method for infrared opposite-type sensor and sensor |
-
2003
- 2003-04-17 CN CN 03245476 patent/CN2632786Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102039872A (en) * | 2010-12-24 | 2011-05-04 | 深圳市航盛电子股份有限公司 | Anti-theft device of automobile and anti-theft method |
| CN105096484A (en) * | 2015-07-22 | 2015-11-25 | 福建升腾资讯有限公司 | Method for protecting core area of POS device |
| CN105139631A (en) * | 2015-08-11 | 2015-12-09 | 广东博威尔电子科技有限公司 | Code pairing method for infrared opposite-type sensor and sensor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20040811 Termination date: 20100417 |