CN204615797U - Background suppress photoelectric sensing apparatus - Google Patents
Background suppress photoelectric sensing apparatus Download PDFInfo
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- CN204615797U CN204615797U CN201520268889.1U CN201520268889U CN204615797U CN 204615797 U CN204615797 U CN 204615797U CN 201520268889 U CN201520268889 U CN 201520268889U CN 204615797 U CN204615797 U CN 204615797U
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- sensing apparatus
- photoelectric sensing
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- background suppress
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Abstract
The utility model provides a kind of background suppress photoelectric sensing apparatus, belong to field of photoelectric technology, comprise shell, shell is provided with diversing lens and receiver lens, diversing lens is provided with reflector away from the side of shell, and reflector is electrically connected with emitter driver circuitry; Receiver lens is provided with PSD transducer away from the one side of described shell, and described PSD transducer is connected with signal amplification circuit; Described background suppress photoelectric sensing apparatus also comprises the synchronous detection control circuit of signal, and described signal synchronous detection control circuit is electrically connected with described signal amplification circuit; Described background suppress photoelectric sensing apparatus also comprises microcontroller, and described microcontroller respectively detection control circuit synchronous with described emitter driver circuitry and described signal is electrically connected; Described background suppress photoelectric sensing apparatus also comprises signal output apparatus.This background suppress photoelectric sensing apparatus improves the problem that changing can appear along with the color difference of object to be detected in existing photoelectric sensor detecting distance.
Description
Technical field
The utility model relates to field of photoelectric technology, in particular to a kind of background suppress photoelectric sensing apparatus.
Background technology
Photoelectric sensor is the abbreviation of photoelectric proximity switch, and it utilizes object to be detected blocking or reflecting light beam, by synchronization loop gating circuit, thus the presence or absence of inspected object.And the light that the photophore of existing photoelectric sensor sends is mapped on target object and forms diffuse reflection, part light is reflected to the receiving terminal of photoelectric sensor, photoelectric sensor can judge whether object according to the amplitude connecing receiving terminal received signal, but existing photoelectric sensor detecting distance can appearance changes along with the color of object to be detected is different.
Utility model content
The purpose of this utility model is to provide a kind of background suppress photoelectric sensing apparatus, to improve the problem that changing can appear along with the color difference of object to be detected in existing photoelectric sensor detecting distance.
The utility model is achieved in that
A kind of background suppress photoelectric sensing apparatus, comprise shell, described shell is provided with diversing lens and receiver lens, described diversing lens is provided with reflector away from the side of described shell, and described reflector is electrically connected with emitter driver circuitry; Described receiver lens is provided with PSD transducer away from the one side of described shell, and described PSD transducer is connected with signal amplification circuit; Described background suppress photoelectric sensing apparatus also comprises the synchronous detection control circuit of signal, and described signal synchronous detection control circuit is electrically connected with described signal amplification circuit; Described background suppress photoelectric sensing apparatus also comprises microcontroller, and described microcontroller respectively detection control circuit synchronous with described emitter driver circuitry and described signal is electrically connected; Described background suppress photoelectric sensing apparatus also comprises signal output apparatus.
Further, described background suppress photoelectric sensing apparatus also comprises filter circuit, threshold value comparison circuit and reference voltage compensating circuit, described filter circuit detection control circuit synchronous with described signal is electrically connected, described threshold value comparison circuit is electrically connected with described filter circuit and described reference voltage compensating circuit respectively, and described reference voltage compensating circuit is electrically connected with described microcontroller.
Further, described reflector is infrared transmitter.
As a kind of execution mode, described signal output apparatus is NPN output circuit.
As another kind of execution mode, described signal output apparatus is PNP output circuit.
The technique effect that the utility model realizes:
The background suppress photoelectric sensing apparatus that the utility model embodiment provides, the light sent by making reflector is through diversing lens illumination bands object to be measured, and accept by PSD transducer the light that reflections off objects to be measured returns, the light signal received is converted to the signal of telecommunication to go forward side by side the mode of row relax, make the intensity of incident light and size all irrelevant to the position output signal of PSD transducer, thus improve existing photoelectric sensor detecting distance can be different and occur the problem that changes along with the color of object to be detected.
Accompanying drawing explanation
Fig. 1 shows the structural representation of the background suppress photoelectric sensing apparatus that the utility model embodiment provides.
The circuit diagram of signal amplification circuit and the synchronous detection control circuit of signal in the background suppress photoelectric sensing apparatus that Fig. 2 provides for the utility model embodiment.
Embodiment
Below in conjunction with accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.The assembly of the utility model embodiment describing and illustrate in usual accompanying drawing herein can be arranged with various different configuration and design.Therefore, below to the detailed description of the embodiment of the present utility model provided in the accompanying drawings and the claimed scope of the present utility model of not intended to be limiting, but selected embodiment of the present utility model is only represented.Based on embodiment of the present utility model, the every other embodiment that those skilled in the art obtain under the prerequisite not making creative work, all belongs to the scope of the utility model protection.
Refer to Fig. 1-2, a kind of background suppress photoelectric sensing apparatus that the utility model embodiment provides, comprise shell, described shell is provided with diversing lens 101 and receiver lens 201, described diversing lens 101 is provided with reflector 102 away from the side of described shell, and described reflector 102 is electrically connected with emitter driver circuitry 103; Described receiver lens 201 is provided with PSD transducer 202 away from the one side of described shell, and described PSD transducer 202 is connected with signal amplification circuit 203.
Signal amplification circuit 203 makes signal amplification factor improve a lot, but signal amplification circuit 203 will amplify noise signal simultaneously, a lot of destabilizing factor is brought to testing result, in order to improve the problems referred to above, described background suppress photoelectric sensing apparatus also comprises the synchronous detection control circuit 204 of signal, and described signal synchronous detection control circuit 204 is electrically connected with described signal amplification circuit 203; Described background suppress photoelectric sensing apparatus also comprises microcontroller 301, and described microcontroller 301 is electrically connected with described emitter driver circuitry 103 and the synchronous detection control circuit 204 of described signal respectively; Described background suppress photoelectric sensing apparatus also comprises signal output apparatus.
In practice process, in order to eliminate the noise jamming of non-signal frequency range, as one preferred embodiment, described background suppress photoelectric sensing apparatus also comprises filter circuit 205, threshold value comparison circuit 206 and reference voltage compensating circuit 207, described filter circuit 205 detection control circuit 204 synchronous with described signal is electrically connected, described threshold value comparison circuit 206 is electrically connected with described filter circuit 205 and described reference voltage compensating circuit 207 respectively, and described reference voltage compensating circuit 207 is electrically connected with described microcontroller 301.
It should be noted that, as shown in Figure 2, in practice process, signal amplification circuit 203 can directly adopt amplifier IC3B, the time sequential pulse of the synchronous detection control circuit 204 of microcontroller 301 control signal, achieves result and detects synchronous with transmitting.The Screening Treatment that resistance R29 and electric capacity C15 can carry out signal, microcontroller 301 controls the operating state of PNP type triode T3 or NPN type triode T4 again according to different detected state, formed and compensate reference voltage threshold.
Preferably, described reflector 102 is infrared transmitter.
As a kind of execution mode, described signal output apparatus is NPN output circuit.
As another kind of execution mode, described signal output apparatus is PNP output circuit.
It should be noted that, the detecting distance of the background suppress photoelectric sensing apparatus that the utility model embodiment provides can be arranged by regulating lens angle, also can be arranged by circuit.
The background suppress photoelectric sensing apparatus that the utility model embodiment provides, the light sent by making reflector is through diversing lens illumination bands object to be measured, and accept by PSD transducer the light that reflections off objects to be measured returns, the light signal received is converted to the signal of telecommunication to go forward side by side the mode of row relax, make the intensity of incident light and size all irrelevant to the position output signal of PSD transducer, thus improve existing photoelectric sensor detecting distance can be different and occur the problem that changes along with the color of object to be detected.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection range of the present utility model.
Claims (5)
1. a background suppress photoelectric sensing apparatus, it is characterized in that, comprise shell, described shell is provided with diversing lens and receiver lens, described diversing lens is provided with reflector away from the side of described shell, and described reflector is electrically connected with emitter driver circuitry; Described receiver lens is provided with PSD transducer away from the one side of described shell, and described PSD transducer is connected with signal amplification circuit; Described background suppress photoelectric sensing apparatus also comprises the synchronous detection control circuit of signal, and described signal synchronous detection control circuit is electrically connected with described signal amplification circuit; Described background suppress photoelectric sensing apparatus also comprises microcontroller, and described microcontroller respectively detection control circuit synchronous with described emitter driver circuitry and described signal is electrically connected; Described background suppress photoelectric sensing apparatus also comprises signal output apparatus.
2. background suppress photoelectric sensing apparatus according to claim 1, it is characterized in that, described background suppress photoelectric sensing apparatus also comprises filter circuit, threshold value comparison circuit and reference voltage compensating circuit, described filter circuit detection control circuit synchronous with described signal is electrically connected, described threshold value comparison circuit is electrically connected with described filter circuit and described reference voltage compensating circuit respectively, and described reference voltage compensating circuit is electrically connected with described microcontroller.
3. background suppress photoelectric sensing apparatus according to claim 1, is characterized in that, described reflector is infrared transmitter.
4. background suppress photoelectric sensing apparatus according to claim 1, is characterized in that, described signal output apparatus is NPN output circuit.
5. background suppress photoelectric sensing apparatus according to claim 1, is characterized in that, described signal output apparatus is PNP output circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520268889.1U CN204615797U (en) | 2015-04-29 | 2015-04-29 | Background suppress photoelectric sensing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520268889.1U CN204615797U (en) | 2015-04-29 | 2015-04-29 | Background suppress photoelectric sensing apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204615797U true CN204615797U (en) | 2015-09-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520268889.1U Expired - Fee Related CN204615797U (en) | 2015-04-29 | 2015-04-29 | Background suppress photoelectric sensing apparatus |
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| CN (1) | CN204615797U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108037511A (en) * | 2017-12-29 | 2018-05-15 | 北醒（北京）光子科技有限公司 | One kind suppresses background noise system and laser radar |
-
2015
- 2015-04-29 CN CN201520268889.1U patent/CN204615797U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108037511A (en) * | 2017-12-29 | 2018-05-15 | 北醒（北京）光子科技有限公司 | One kind suppresses background noise system and laser radar |
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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 |
Granted publication date: 20150902 |
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| CF01 | Termination of patent right due to non-payment of annual fee |