CN204301858U - Light intensity detection circuit and light intensity siren - Google Patents
Light intensity detection circuit and light intensity siren Download PDFInfo
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- CN204301858U CN204301858U CN201420735329.8U CN201420735329U CN204301858U CN 204301858 U CN204301858 U CN 204301858U CN 201420735329 U CN201420735329 U CN 201420735329U CN 204301858 U CN204301858 U CN 204301858U
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Abstract
The utility model belongs to signal detection field, particularly relates to a kind of light intensity detection circuit and light intensity siren.This light intensity detection circuit comprises intensity collection unit, the first filter unit, voltage regulation unit, signal processing unit and the second filter unit, export after the light intensity signal that intensity collection unit obtains can being carried out amplification process, the range of light intensity that can detect is very wide, achieve the detection from faint light to high high light, in real time the change of light intensity signal can be exported to follow-up modular circuit.Whether the light intensity siren that the utility model provides, owing to have employed above-mentioned light intensity detection circuit, can compare judgement to real-time light intensity change in setting range, when exceeding setting range, and just can automatic alarm.The light intensity siren that the utility model provides and light intensity detection circuit, also have compact structure, easy to carry and feature that is low in energy consumption, strong interference immunity.
Description
Technical field
The utility model belongs to signal detection field, particularly relates to a kind of light intensity detection circuit and light intensity siren.
Background technology
Along with the development of electronic technology, the application of light-intensity test is also rapidly expanded.Society now, intelligent product, digitlization have become a kind of trend that people pursue, and the performance of equipment, price and development space etc. also enjoy people to pay close attention to.The electronic equipment that performance is good is in order to extend its service life, very high to the requirement of peripheral protection circuit; especially some precision instruments; its light to environment for use requires higher, and light is too weak, it is bad to operate, and light is too strong may cause brush bad to instrument and equipment again.So in business equipment protection, the light detection alarm circuit designing a intelligence is particularly important.
Utility model content
In view of this, first namely the purpose of this utility model is to provide a kind of light intensity detection circuit, can realize the extensive detection from faint light to high light intensity signal.
The light intensity detection circuit that the utility model provides, except comprising intensity collection unit, also comprises:
The first filter unit be directly connected with power supply;
The voltage regulation unit being connected with described filter unit, supply voltage is changed;
Be connected with described voltage regulation unit, the light intensity signal that described intensity collection unit obtains is carried out amplifying the signal processing unit processing and export afterwards; And
Between the output being connected to described signal processing unit and ground, to outputing signal the second filter unit carrying out filtering.
Particularly, described intensity collection unit is photodiode.
Particularly, described first filter unit comprises electrochemical capacitor C1 and electric capacity C2; Described electrochemical capacitor C1 and electric capacity C2 is attempted by between the positive-negative output end of described power supply respectively.
Particularly, described voltage regulation unit comprises step-down chip V1, electrochemical capacitor C3 and electric capacity C4; The output of filter unit described in the input termination of described step-down chip V1, between the output that described electrochemical capacitor C3 and electric capacity C4 is attempted by described step-down chip V1 respectively and ground, the grounding pin ground connection of described step-down chip V1.
Particularly, described signal processing unit comprises two-stage amplification chip A1, resistance R1, resistance R2, resistance R3 and electric capacity C5, described two-stage amplification chip A1 comprises No. 1-8 eight pins, No. 8 pins connect the output of described voltage regulation unit, No. 4 pin ground connection, No. 3 pins connect the anode of described photodiode, the negative electrode of described photodiode connects the first end of No. 2 pins and described resistance R1 simultaneously, second end of described resistance R1 connects the first end of No. 1 pin and described resistance R2 simultaneously, described electric capacity C5 is attempted by the two ends of described resistance R1, the second termination No. 5 pins of described resistance R2, No. 7 pins are the output of described signal processing unit, export the light intensity signal after amplifying process, No. 6 pins access No. 7 pins by described resistance R3 and form feedback.
Particularly, described second filter unit comprises electrochemical capacitor C7 and electric capacity C8; Between the output that described electrochemical capacitor C7 and electric capacity C8 is attempted by described signal processing unit respectively and ground.
Further, described light intensity detection circuit also comprises electric capacity C6; Described electric capacity C6 is connected to No. 8 of described two-stage amplification chip A1 between pin and ground.
Further, described light intensity detection circuit also comprises electric capacity C9; Described electric capacity C9 is connected between described resistance R1, the tie point of resistance R2 and ground.
The purpose of this utility model is also to provide a kind of light intensity siren.Whether exceed setting range and have if this light intensity siren comprises power supply, gather light intensity signal that the light intensity detection circuit of light intensity signal and judgement collect and exceed setting range, the alert control circuitry of automatic alarm, as improvement, described light intensity detection circuit is the light intensity detection circuit of above-mentioned arbitrary form.
The light intensity detection circuit that the utility model provides, the range of light intensity that can detect is very wide, achieves the detection from faint light to high high light, in real time the change of light intensity signal can be exported to follow-up modular circuit.Whether the light intensity siren that the utility model provides, owing to have employed above-mentioned light intensity detection circuit, can compare judgement to real-time light intensity change in setting range, when exceeding setting range, and just can automatic alarm.The light intensity siren that the utility model provides and light intensity detection circuit thereof, also have compact structure, easy to carry and feature that is low in energy consumption, strong interference immunity.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of the light intensity detection circuit that the utility model embodiment provides;
Fig. 2 is the topology example figure of the light intensity detection circuit that the utility model one preferred embodiment provides;
Fig. 3 is the structured flowchart of the light intensity siren that the utility model embodiment provides.
Detailed description of the invention
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
Fig. 1 is the structured flowchart of the light intensity detection circuit that the utility model embodiment provides; For convenience of explanation, illustrate only part related to the present embodiment, as shown in the figure:
A kind of light intensity detection circuit 10, is directly connected with power supply 20, except comprising intensity collection unit 110, also comprises the first filter unit 120, voltage regulation unit 130, signal processing unit 140 and the second filter unit 150 that are connected successively.Wherein, the first filter unit 120 is directly connected with power supply 20, carries out filtering to power supply 20; Voltage regulation unit 130 connect filter unit 120 output, supply voltage is changed, and give signal processing unit 140 operating voltage is provided; The light intensity signal that signal processing unit 140 is connected with voltage regulation unit 130, obtain intensity collection unit 110 carries out exporting after amplification processes; Between the signal output part that second filter unit 150 is connected to described signal processing unit 140 and ground, filtering is carried out to output signal.
Fig. 2 is the topology example figure of the light intensity detection circuit that the utility model one preferred embodiment provides; Same, for convenience of explanation, illustrate only part related to the present embodiment, as shown in the figure:
As a preferred embodiment of the present utility model, intensity collection unit 110 is photodiode.That select here is a photodiode D1.
As a preferred embodiment of the present utility model, the first filter unit 120 comprises electrochemical capacitor C1 and electric capacity C2; Electrochemical capacitor C1 and electric capacity C2 is attempted by between the positive-negative output end of power supply 10 respectively.
As a preferred embodiment of the present utility model, voltage regulation unit 130 comprises step-down chip V1, electrochemical capacitor C3 and electric capacity C4; The input Vin of step-down chip V1 connects the output of filter unit 120, between the output end vo ut that electrochemical capacitor C3 and electric capacity C4 is attempted by step-down chip V1 respectively and ground, and the grounding pin GND ground connection of step-down chip V1.
As a preferred embodiment of the present utility model, signal processing unit 140 comprises two-stage amplification chip A1, resistance R1, resistance R2, resistance R3 and electric capacity C5; Two-stage amplification chip A1 comprises No. 1-8 eight pins, wherein, No. 8 pins are feeder ears, No. 4 pins are earth terminals, and No. 1 pin is the first output, and No. 2 pins are first reverse input ends, No. 3 pins are first positive inputs, No. 5 pins are second positive inputs, and No. 6 pins are second reverse input ends, and No. 7 pins are second outputs.Wherein, No. 8 pins connect the output of voltage regulation unit 130, No. 4 pin ground connection, No. 3 pins connect the anode of photodiode D1, the negative electrode of photodiode D1 connects the first end of No. 2 pins and resistance R1 simultaneously, second end of resistance R1 connects the first end of No. 1 pin and resistance R2 simultaneously, electric capacity C5 is attempted by the two ends of resistance R1, the second termination No. 5 pins of resistance R2, No. 7 pins as signal processing unit 140 output, export the light intensity signal after amplifying process, No. 6 pins access No. 7 pins by resistance R3 and form feedback.
As a preferred embodiment of the present utility model, the second filter unit 150 comprises electrochemical capacitor C7 and electric capacity C8; Between the output that electrochemical capacitor C7 and electric capacity C8 is attempted by signal processing unit 140 respectively and ground.
Continue see Fig. 2, as a preferred embodiment of the present utility model, light intensity detection circuit 10 also comprises electric capacity C6; This electric capacity C6 is connected to No. 8 of two-stage amplification chip A1 between pin and ground, for the supply voltage being supplied to two-stage amplification chip A1 carries out filtering again.Light intensity detection circuit 10 also comprises electric capacity C9; Electric capacity C9 is connected between resistance R1, the tie point of resistance R2 and ground, for carrying out filtering to the transmission of the two poles of the earth signal between two-stage amplification chip A1.
The utility model embodiment also provides a kind of light intensity siren.See Fig. 3, Fig. 3 shows the basic structure of this light intensity siren, if comprise power supply 20, gather the light intensity detection circuit 10 of light intensity signal and judge whether the described light intensity signal that collects exceeds setting range and have and exceed setting range, the alert control circuitry 30 of automatic alarm.It is characterized in that, described light intensity detection circuit 10 is the light intensity detection circuit that the various embodiments described above provide.
In the light intensity siren that the present embodiment provides, they are self-powered 20 years old, alert control circuitry 30 is exported to after being processed by the light intensity signal collected by light intensity detection circuit 10, alert control circuitry 30 is with the degree of the signal received for benchmark judgement light intensity signal now, judge whether it exceeds predetermined value range, if any exceeding setting range, then realize automatic alarm.
To sum up, the light intensity detection circuit that the utility model embodiment provides, the range of light intensity that can detect is very wide, achieves the detection from faint light to high high light, in real time the change of light intensity signal can be exported to follow-up modular circuit.Whether the light intensity siren that the utility model provides, owing to have employed above-mentioned light intensity detection circuit, can compare judgement to real-time light intensity change in setting range, when exceeding setting range, and just can automatic alarm.The light intensity siren that the utility model provides and light intensity detection circuit thereof, also have compact structure, easy to carry and feature that is low in energy consumption, strong interference immunity.
The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, although carried out comparatively detailed description with reference to previous embodiment to the utility model, for a person skilled in the art, it still can be modified to the technical scheme described in foregoing embodiments or carry out equivalent replacement to wherein portion of techniques feature.All do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (9)
1. a light intensity detection circuit, comprises intensity collection unit, it is characterized in that, described light intensity detection circuit also comprises:
The first filter unit be directly connected with power supply;
The voltage regulation unit being connected with described filter unit, supply voltage is changed;
Be connected with described voltage regulation unit, the light intensity signal that described intensity collection unit obtains is carried out amplifying the signal processing unit processing and export afterwards; And
Between the output being connected to described signal processing unit and ground, to outputing signal the second filter unit carrying out filtering.
2. light intensity detection circuit as claimed in claim 1, it is characterized in that, described intensity collection unit is photodiode.
3. light intensity detection circuit as claimed in claim 1, it is characterized in that, described first filter unit comprises electrochemical capacitor C1 and electric capacity C2; Described electrochemical capacitor C1 and electric capacity C2 is attempted by between the positive-negative output end of described power supply respectively.
4. light intensity detection circuit as claimed in claim 1, it is characterized in that, described voltage regulation unit comprises step-down chip V1, electrochemical capacitor C3 and electric capacity C4; The output of filter unit described in the input termination of described step-down chip V1, between the output that described electrochemical capacitor C3 and electric capacity C4 is attempted by described step-down chip V1 respectively and ground, the grounding pin ground connection of described step-down chip V1.
5. light intensity detection circuit as claimed in claim 2, it is characterized in that, described signal processing unit comprises two-stage amplification chip A1, resistance R1, resistance R2, resistance R3 and electric capacity C5;
Described two-stage amplification chip A1 comprises No. 1-8 eight pins, No. 8 pins connect the output of described voltage regulation unit, No. 4 pin ground connection, No. 3 pins connect the anode of described photodiode, the negative electrode of described photodiode connects the first end of No. 2 pins and described resistance R1 simultaneously, second end of described resistance R1 connects the first end of No. 1 pin and described resistance R2 simultaneously, described electric capacity C5 is attempted by the two ends of described resistance R1, the second termination No. 5 pins of described resistance R2, No. 7 pins are the output of described signal processing unit, export the light intensity signal after amplifying process, No. 6 pins access No. 7 pins by described resistance R3 and form feedback.
6. light intensity detection circuit as claimed in claim 5, it is characterized in that, described second filter unit comprises electrochemical capacitor C7 and electric capacity C8; Between the output that described electrochemical capacitor C7 and electric capacity C8 is attempted by described signal processing unit respectively and ground.
7. light intensity detection circuit as claimed in claim 5, it is characterized in that, described light intensity detection circuit also comprises electric capacity C6; Described electric capacity C6 is connected to No. 8 of described two-stage amplification chip A1 between pin and ground.
8. light intensity detection circuit as claimed in claim 5, it is characterized in that, described light intensity detection circuit also comprises electric capacity C9; Described electric capacity C9 is connected between described resistance R1, the tie point of resistance R2 and ground.
9. a light intensity siren, if comprise power supply, gather described light intensity signal that the light intensity detection circuit of light intensity signal and judgement collect and whether exceed setting range and have and exceed setting range, the alert control circuitry of automatic alarm, it is characterized in that, described light intensity detection circuit is the light intensity detection circuit described in any one of the claims 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420735329.8U CN204301858U (en) | 2014-11-28 | 2014-11-28 | Light intensity detection circuit and light intensity siren |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420735329.8U CN204301858U (en) | 2014-11-28 | 2014-11-28 | Light intensity detection circuit and light intensity siren |
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| CN204301858U true CN204301858U (en) | 2015-04-29 |
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| CN201420735329.8U Active CN204301858U (en) | 2014-11-28 | 2014-11-28 | Light intensity detection circuit and light intensity siren |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108871565A (en) * | 2018-06-27 | 2018-11-23 | 昆山仕优威电子科技有限公司 | A kind of light energy detection device |
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- 2014-11-28 CN CN201420735329.8U patent/CN204301858U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108871565A (en) * | 2018-06-27 | 2018-11-23 | 昆山仕优威电子科技有限公司 | A kind of light energy detection device |
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