CN105139631A - Code pairing method for infrared opposite-type sensor and sensor - Google Patents
Code pairing method for infrared opposite-type sensor and sensor Download PDFInfo
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- CN105139631A CN105139631A CN201510487997.2A CN201510487997A CN105139631A CN 105139631 A CN105139631 A CN 105139631A CN 201510487997 A CN201510487997 A CN 201510487997A CN 105139631 A CN105139631 A CN 105139631A
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Abstract
The invention puts forward a code pairing method for infrared opposite-type sensor and the sensor. The sensor includes a light projection module and a light receiving module. The sensor is characterized in that: the light projection module consists of a carrier signal encoder, an infrared lamp drive circuit and an infrared lamp that are electrically connected in order, and a light projection lens is disposed in the light output direction of the infrared lamp; the light receiving module consists of a photoreceptor, a learning and decoder and a drive amplification circuit that are electrically connected in order, the optical input front end of the photoreceptor is provided with a light receiving lens, and the drive amplification circuit has a status signal output end connected to a next stage circuit. According to the invention, coding is carried out on signals emitted by the light projection module, so that each light projection module has an only emission code, the light receiving module learns the codes of the signals emitted by the light projection module so as to ensure that each light receiving module only induces the light projection module with the code identical to that recognized by the the light receiving module itself, thus guaranteeing the uniqueness of infrared opposite-type sensor pairing.
Description
Technical field
The invention belongs to infrared emission technical field, be specifically related to a kind of coding matching method and this sensor of infrared emission sensor.
Background technology
Infrared emission sensor can be applied in a lot detection fields, carrier wave in the infrared light just sent light projector module by optical module of existing infrared emission sensor is responded to, and judges whether that object has blocked light projector module and by the space between optical module.But some need a lot of group opposite type sensor in narrow space together with the use of scene in, as: the gate of subway station gateway, owing to by optical module being the carrier wave in the infrared light that sends of perception light projector module, and the signal that all light projector modules send is all consistent, this can cause multiplely can respond to the signal that same light projector module sends by optical module, and causes erroneous judgement.Difficulty is also become to the man-to-man debugging of correlation system simultaneously.
Summary of the invention
For the problem mentioned by background technology, the present invention proposes a kind of coding matching method and this sensor of infrared emission sensor, to realize the uniqueness of infrared pairing, is convenient to the induction of signal of sensor and debugs one to one;
Infrared emission sensor plan of the present invention is as follows:
A kind of infrared emission sensor realizing coding pairing, comprise light projector module and be subject to optical module, described light projector module comprises carrier signal scrambler, infrared lamp driving circuit and the infrared lamp composition be electrically connected successively, and the light output direction of described infrared lamp is provided with light projector lens; Describedly comprise by optical module the photoreceptor, study and demoder and the drive amplification circuit that are electrically connected successively and form, the light input front end of described photoreceptor is provided with sensitive lens, and described drive amplification circuit has the status signal output being connected to next stage circuit.
In the middle of one or more embodiment of the present invention, described study and demoder are provided with learning state controlling input end, in order to activate the coding mode of learning of this study and demoder.
In the middle of one or more embodiment of the present invention, described study and demoder are connected with a pilot lamp.
Coding matching method of the present invention is as follows:
A coding matching method for infrared emission sensor, comprises the steps:
S1: be fixedly installed a launching code at transmitting terminal, this launching code is used for modulating infrared signal, and transmitting terminal exports the infrared signal after modulation;
S2: have learning state and decoded state in receiving end definition, correspondence has study sub-step S21 and decoding sub-step S22;
S21: catch the infrared signal sent by transmitting terminal, carries out decoding study to this infrared signal, to obtain corresponding launching code, and saves as current learning code;
S22: catch the infrared signal sent by transmitting terminal, decodes to this infrared signal, and is compared by the current learning code of decoded signal and preservation, if unanimously, then produces corresponding output, otherwise does not export.
The present invention to the light projector module of infrared emission sensor the signal sent out encode, each light projector module is made to have unique transmitter code, learn by the coding of optical module to the signal that light projector module is launched, thus ensure that each optical module that is subject to only responds to the light projector module identical with the code that itself identifies, this guarantees the uniqueness of infrared emission sensor pairing, also do not interfere with each other when many group infrared emission sensors use in narrow space simultaneously; Meanwhile, the mode of coding pairing also reduces the difficulty of correlation system debug, and after adding pilot lamp by optical module, debugging becomes convenient.
Accompanying drawing explanation
Fig. 1 is the composition block schematic illustration of light projector module of the present invention.
Fig. 2 is the composition block schematic illustration by optical module of the present invention.
Embodiment
A coding matching method for infrared emission sensor, comprises the steps:
S1: be fixedly installed a launching code at transmitting terminal, this launching code is used for modulating infrared signal, and transmitting terminal exports the infrared signal after modulation;
S2: have learning state and decoded state in receiving end definition, correspondence has study sub-step S21 and decoding sub-step S22;
S21: catch the infrared signal sent by transmitting terminal, carries out decoding study to this infrared signal, to obtain corresponding launching code, and saves as current learning code;
S22: catch the infrared signal sent by transmitting terminal, decodes to this infrared signal, and is compared by the current learning code of decoded signal and preservation, if unanimously, then produces corresponding output, otherwise does not export.
Following 1-2 by reference to the accompanying drawings, is further described infrared emission sensor plan:
A kind of infrared emission sensor realizing coding pairing, comprise light projector module and be subject to optical module, described light projector module comprises the carrier signal scrambler 11, infrared lamp driving circuit 12 and the infrared lamp 13 that are electrically connected successively and forms, and the light output direction of described infrared lamp 13 is provided with light projector lens 14; Describedly comprise by optical module the photoreceptor 22, study and demoder 23 and the drive amplification circuit 24 that are electrically connected successively and form, the light input front end of described photoreceptor 22 is provided with sensitive lens 21, and described drive amplification circuit 24 has the status signal output being connected to next stage circuit.
Described carrier signal scrambler 11 realizes by MCU, and its effect produces unique launching code, and for the modulation of infrared signal, this launching code can write after MCU dispatches from the factory;
The effect of described infrared lamp driving circuit 12 launching code is converted to corresponding current forms, works to drive infrared lamp 13;
The effect of described infrared lamp 13 is controlled to produce the infrared signal corresponding with launching code by infrared lamp driving circuit 12;
Described light projector lens 14 are based on the refraction principle of convex lens, and its effect is that the infrared waves refraction of dispersing sent by infrared lamp 13 changes into directional light and launches, and as preferred enforcement, described infrared lamp 13 is placed in negative one times of focal length place of convex lens;
The effect of described sensitive lens 21 is that the infrared signal sent by light projector carries out shaping, then delivers in photoreceptor 22;
The effect of described photoreceptor 22 is responsive to the infrared signal of specific wavelength, and converts this infrared signal to corresponding electric signal;
Described study and demoder 23 receive and process the electric signal sent by photoreceptor 22, and it has learning state and decoded state;
When learning state, the electric signal can sent photoreceptor 22 learns and preserves, as the unique learning code for being correctly decoded;
When decoded state, the electric signal that photoreceptor 22 exports is decoded, and decoded signal and learning code are compared, if unanimously, then export, otherwise do not export.
The effect of described drive amplification circuit 24 is that the status signal exported study and demoder 23 carries out amplification output, increases the driving force to next stage.
Described study and demoder 23 are provided with learning state controlling input end, in order to activate the coding mode of learning of this study and demoder 23.
Described study and demoder 23 are connected with a pilot lamp 25, and this pilot lamp 25, under learning state and decoded state, has corresponding cresset to indicate the duty being subject to optical module.Such as, under learning state, the bright expression learning state of pilot lamp 25 terminates; And under decoded state, pilot lamp bright 25 represents successfully decoded.
Above-mentioned preferred implementation should be considered as illustrating of the application's scheme implementation mode, allly to duplicate with the application's scheme, technology that is approximate or that make based on this is deduced, replaces, improvement etc., all should be considered as the protection domain of this patent.
Claims (4)
1. one kind can realize the infrared emission sensor matched of encoding, comprise light projector module and be subject to optical module, it is characterized in that: described light projector module comprises carrier signal scrambler, infrared lamp driving circuit and the infrared lamp composition be electrically connected successively, and the light output direction of described infrared lamp is provided with light projector lens; Describedly comprise by optical module the photoreceptor, study and demoder and the drive amplification circuit that are electrically connected successively and form, the light input front end of described photoreceptor is provided with sensitive lens, and described drive amplification circuit has the status signal output being connected to next stage circuit.
2. the infrared emission sensor realizing coding pairing according to claim 1, is characterized in that: described study and demoder are provided with learning state controlling input end, in order to activate the coding mode of learning of this study and demoder.
3. the infrared emission sensor realizing coding pairing according to claim 1 and 2, is characterized in that: described study and demoder are connected with a pilot lamp.
4. a coding matching method for infrared emission sensor, comprises the steps:
S1: be fixedly installed a launching code at transmitting terminal, this launching code is used for modulating infrared signal, and transmitting terminal exports the infrared signal after modulation;
S2: have learning state and decoded state in receiving end definition, correspondence has study sub-step S21 and decoding sub-step S22;
S21: catch the infrared signal sent by transmitting terminal, carries out decoding study to this infrared signal, to obtain corresponding launching code, and saves as current learning code;
S22: catch the infrared signal sent by transmitting terminal, decodes to this infrared signal, and is compared by the current learning code of decoded signal and preservation, if unanimously, then produces corresponding output, otherwise does not export.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510487997.2A CN105139631A (en) | 2015-08-11 | 2015-08-11 | Code pairing method for infrared opposite-type sensor and sensor |
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| CN201510487997.2A CN105139631A (en) | 2015-08-11 | 2015-08-11 | Code pairing method for infrared opposite-type sensor and sensor |
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Cited By (1)
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| CN109445332A (en) * | 2018-10-24 | 2019-03-08 | 杭州尚朴投资有限公司 | A kind of detection system and method for gate passage |
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Application publication date: 20151209 |