CN203894410U - Infrared type obstacle detection device - Google Patents
Infrared type obstacle detection device Download PDFInfo
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- CN203894410U CN203894410U CN201420164388.4U CN201420164388U CN203894410U CN 203894410 U CN203894410 U CN 203894410U CN 201420164388 U CN201420164388 U CN 201420164388U CN 203894410 U CN203894410 U CN 203894410U
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Abstract
The utility model provides an infrared type obstacle detection device comprising an infrared emitting circuit, an infrared receiving circuit, a high pass filter circuit, an amplitude detection and amplification circuit, an analog to digital conversion circuit and a one-chip microcomputer, wherein the infrared emitting circuit is connected to the infrared receiving circuit and the one-chip microcomputer, the infrared receiving circuit is further connected to the high pass filter circuit which is further connected to the amplitude detection and amplification circuit, and the amplitude detection and amplification circuit is connected to the analog to digital conversion circuit which is further connected to the one-chip microcomputer.
Description
Technical field
The utility model relates to intelligent detection equipment, sensor field, and more particularly, the utility model relates to a kind of infrared type obstacle detection equipment.
Background technology
During the work of existing infrared type obstacle detection method, be usually the infrared ray that first points to direction transmitting some strength to be detected, then at the party's receiving infrared-ray that makes progress.If receive infrared ray, judge that this direction has barrier, does not have barrier otherwise be judged as.
Existing method can not judge that the infrared ray receiving is that oneself transmitting reflects by barrier or the other side transmitting, just thinks there is barrier as long as receive infrared radiation.When there are solar light irradiation, light or flame in opposite, easily think the infrared ray of barrier reflection, thereby produce erroneous judgement.Although some existing measurement is with modulated infrared function, antijamming capability is strong, and measuring distance is not had to information, has therefore limited its application.
Utility model content
Technical problem to be solved in the utility model is for there being above-mentioned defect in prior art, a kind of sensitivity and antijamming capability that can improve infrared type obstacle detection is provided, not only can survey thus opposite barrier and have nothing, also can record the infrared type obstacle detection equipment of its distance.
In order to realize above-mentioned technical purpose, according to the utility model, a kind of infrared type obstacle detection equipment is provided, has it is characterized in that comprising: infrared transmitting circuit, infrared receiving circuit, high-pass filtering circuit, amplitude detection and amplifying circuit, analog to digital conversion circuit and single-chip microcomputer; Wherein, infrared transmitting circuit is connected to infrared receiving circuit and single-chip microcomputer; Infrared receiving circuit is further connected to high-pass filtering circuit; High-pass filtering circuit is further connected to amplitude detection and amplifying circuit; Amplitude detection and amplifying circuit are further connected to analog to digital conversion circuit; Analog to digital conversion circuit is further connected to single-chip microcomputer; Infrared transmitting circuit sends Infrared to infrared receiving circuit; Infrared receiving circuit is used for receiving infrared receiving circuit, and first converts the infrared signal receiving to current signal, then converts voltage signal to, and described voltage signal is passed to high-pass filtering circuit; High-pass filtering circuit carries out high-pass filtering to the voltage signal receiving from infrared receiving circuit, and the signal after high-pass filtering is passed to amplitude detection and amplifying circuit; Amplitude detection and amplifying circuit detect the amplitude of the signal receiving from high-pass filtering circuit to produce amplitude signal, and amplitude signal is amplified; And amplitude detection and amplifying circuit pass to analog to digital conversion circuit by the amplitude signal after amplifying; The amplitude signal of analog to digital conversion circuit to the amplification from amplitude detection and amplifying circuit receive carries out analog to digital conversion to obtain amplitude digital signal, and by amplitude digital signal transfers to single-chip microcomputer.
Preferably, in single-chip microcomputer, store the mapping table between obstacle distance and the numerical value of amplitude digital signal, and single-chip microcomputer is known obstacle distance according to the amplitude digital signal passing over from analog to digital conversion circuit by searching mapping table.
Preferably, infrared transmitting circuit comprises infrared transmitting tube and triode.
Preferably, infrared receiving circuit comprises infrared receiving diode and operational amplifier.
Accompanying drawing explanation
By reference to the accompanying drawings, and by reference to detailed description below, will more easily to the utility model, there is more complete understanding and more easily understand its advantage of following and feature, wherein:
Fig. 1 schematically shows according to the block diagram of the infrared type obstacle detection equipment of the utility model embodiment.
It should be noted that, accompanying drawing is used for illustrating the utility model, and unrestricted the utility model.Note, the accompanying drawing that represents structure may not be to draw in proportion.And in accompanying drawing, identical or similar element indicates identical or similar label.
Embodiment
In order to make content of the present utility model more clear and understandable, below in conjunction with specific embodiments and the drawings, content of the present utility model is described in detail.
Fig. 1 schematically shows according to the block diagram of the infrared type obstacle detection equipment of the utility model embodiment.
As shown in Figure 1, according to the infrared type obstacle detection equipment of the utility model embodiment, comprise: infrared transmitting circuit 1, infrared receiving circuit 2, high-pass filtering circuit 3, amplitude detection and amplifying circuit 4, analog to digital conversion circuit 5 and single-chip microcomputer 6.
Wherein, infrared transmitting circuit 1 is connected to infrared receiving circuit 2 and single-chip microcomputer 6; Infrared receiving circuit 2 is further connected to; High-pass filtering circuit 3 is further connected to amplitude detection and amplifying circuit 4; Amplitude detection and amplifying circuit 4 are further connected to analog to digital conversion circuit 5; Analog to digital conversion circuit 5 is further connected to single-chip microcomputer 6.
Infrared transmitting circuit 1 sends Infrared to infrared receiving circuit 2.For example, in concrete enforcement, infrared transmitting circuit 1 can comprise infrared transmitting tube and triode; An input and output pin output 1kHz square-wave signal of single-chip microcomputer 6, and drive infrared transmitting tube to send same warbled Infrared by the triode of infrared transmitting circuit 1.
Infrared receiving circuit 2 is for receiving infrared receiving circuit 2, and first converts the infrared signal receiving to current signal, then converts voltage signal to, and described voltage signal is passed to high-pass filtering circuit 3.3 pairs of voltage signals that receive from infrared receiving circuit 2 of high-pass filtering circuit carry out high-pass filtering, and the signal after high-pass filtering is passed to amplitude detection and amplifying circuit 4.
For example, in concrete enforcement, infrared receiving circuit 2 can comprise infrared receiving diode and operational amplifier.
In fact, in described voltage signal, comprise infrared type obstacle detection equipment transmitting by infrared undesired signals such as the infrared signal of barrier reflection and extraneous light, but undesired signal is low frequency signal, therefore through next high-pass filtering circuit 3 (for example, 707Hz high-pass filtering module) after, by filtering, obtain required infrared signal.
Amplitude detection and amplifying circuit 4 detect the amplitude of the signal receiving from high-pass filtering circuit 3 to produce amplitude signal, and amplitude signal is amplified.Amplitude detection and amplifying circuit 4 pass to analog to digital conversion circuit 5 by the amplitude signal after amplifying.5 pairs of the analog to digital conversion circuits amplitude signal from the amplification that amplitude detection and amplifying circuit 4 receive carries out analog to digital conversion to obtain amplitude digital signal, and by amplitude digital signal transfers to single-chip microcomputer 6.
Specifically, described infrared signal is AC signal, and the infrared ray of its amplitude table obstructions reflection is strong and weak, and this power has reflected the distance of barrier.Amplitude detection and amplifying circuit 4 obtain amplitude, and amplify, filtering low frequency pulsating.
Amplitude signal after shaping is sent into analog to digital conversion circuit 5 (analog to digital converter), and transformation result is got by monolithic is machine-readable.
Preferably, in single-chip microcomputer 6, store the mapping table between obstacle distance and the numerical value of amplitude digital signal, thus, single-chip microcomputer 6 can be known obstacle distance by searching mapping table according to the amplitude digital signal passing over from analog to digital conversion circuit 5.
In specific implementation process, for example, according to the infrared type obstacle detection equipment of the utility model embodiment, before measurement, can demarcate in advance, the relation that records voltage and distance of different distance barrier is done to measure in advance, then they are kept in single-chip microcomputer with form.When measuring, single-chip microcomputer, according to recording voltage, is tabled look-up and is obtained distance.
The infrared ray of modulating through certain frequency by transmitting according to the infrared type obstacle detection equipment of the utility model embodiment, when detecting, filtering low frequency environments is disturbed, and obtains compared with the measurement of high stability and precision; And, according to the infrared type obstacle detection equipment of the utility model embodiment, directly use the square wave that single-chip microcomputer pin sends to drive radiating circuit, simple and convenient; The utlity model has enforcement simple, antijamming capability is strong, measures religion accurately, and the distance of the small-sized automatic equipments such as available individual various intelligent robots, intelligent carriage detects, obstacle detection.
Thus, the utility model at least has following advantages:
(1) according to the infrared type obstacle detection equipment of the utility model embodiment, not only can survey opposite barrier and have nothing, also can record its distance;
(2) can detecting obstacles thing according to the infrared type obstacle detection equipment of the utility model embodiment and be not subject to the interference of the ambient lights such as extraneous sunshine, light, flame;
(3) according to the infrared type obstacle detection equipment of the utility model embodiment, implement simply, with low cost, be suitable for a large amount of production and applications.
In addition, it should be noted that, unless stated otherwise or point out, otherwise the descriptions such as the term in instructions " first ", " second ", " the 3rd " are only for distinguishing each assembly, element, step of instructions etc., rather than for representing logical relation between each assembly, element, step or ordinal relation etc.
Be understandable that, although the utility model with preferred embodiment disclosure as above, yet above-described embodiment is not in order to limit the utility model.For any those of ordinary skill in the art, do not departing from technical solutions of the utility model scope situation, all can utilize the technology contents of above-mentioned announcement to make many possible changes and modification to technical solutions of the utility model, or be revised as the equivalent embodiment of equivalent variations.Therefore, every content that does not depart from technical solutions of the utility model,, all still belongs in the scope of technical solutions of the utility model protection any simple modification made for any of the above embodiments, equivalent variations and modification according to technical spirit of the present utility model.
Claims (3)
1. an infrared type obstacle detection equipment, is characterized in that comprising: infrared transmitting circuit, infrared receiving circuit, high-pass filtering circuit, amplitude detection and amplifying circuit, analog to digital conversion circuit and single-chip microcomputer;
Wherein, infrared transmitting circuit is connected to infrared receiving circuit and single-chip microcomputer; Infrared receiving circuit is further connected to high-pass filtering circuit; High-pass filtering circuit is further connected to amplitude detection and amplifying circuit; Amplitude detection and amplifying circuit are further connected to analog to digital conversion circuit; Analog to digital conversion circuit is further connected to single-chip microcomputer;
Infrared transmitting circuit sends Infrared to infrared receiving circuit;
Infrared receiving circuit is used for receiving infrared receiving circuit, and first converts the infrared signal receiving to current signal, then converts voltage signal to, and described voltage signal is passed to high-pass filtering circuit;
High-pass filtering circuit carries out high-pass filtering to the voltage signal receiving from infrared receiving circuit, and the signal after high-pass filtering is passed to amplitude detection and amplifying circuit;
Amplitude detection and amplifying circuit detect the amplitude of the signal receiving from high-pass filtering circuit to produce amplitude signal, and amplitude signal is amplified; And amplitude detection and amplifying circuit pass to analog to digital conversion circuit by the amplitude signal after amplifying;
The amplitude signal of analog to digital conversion circuit to the amplification from amplitude detection and amplifying circuit receive carries out analog to digital conversion to obtain amplitude digital signal, and by amplitude digital signal transfers to single-chip microcomputer.
2. infrared type obstacle detection equipment according to claim 1, is characterized in that, infrared transmitting circuit comprises infrared transmitting tube and triode.
3. infrared type obstacle detection equipment according to claim 1 and 2, is characterized in that, infrared receiving circuit comprises infrared receiving diode and operational amplifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420164388.4U CN203894410U (en) | 2014-04-04 | 2014-04-04 | Infrared type obstacle detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420164388.4U CN203894410U (en) | 2014-04-04 | 2014-04-04 | Infrared type obstacle detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203894410U true CN203894410U (en) | 2014-10-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420164388.4U Expired - Fee Related CN203894410U (en) | 2014-04-04 | 2014-04-04 | Infrared type obstacle detection device |
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| Country | Link |
|---|---|
| CN (1) | CN203894410U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109885055A (en) * | 2019-03-06 | 2019-06-14 | 罗翊恺 | A kind of intelligent carriage control method |
| CN112863156A (en) * | 2021-01-07 | 2021-05-28 | 李琳琳 | Method and system for setting monitoring range by intelligent doorbell distance measurement |
| CN112863155A (en) * | 2021-01-07 | 2021-05-28 | 李琳琳 | Intelligent doorbell PIR module recalibration method and system |
-
2014
- 2014-04-04 CN CN201420164388.4U patent/CN203894410U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109885055A (en) * | 2019-03-06 | 2019-06-14 | 罗翊恺 | A kind of intelligent carriage control method |
| CN112863156A (en) * | 2021-01-07 | 2021-05-28 | 李琳琳 | Method and system for setting monitoring range by intelligent doorbell distance measurement |
| CN112863155A (en) * | 2021-01-07 | 2021-05-28 | 李琳琳 | Intelligent doorbell PIR module recalibration method and system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141022 Termination date: 20170404 |