CN206959986U - A kind of sunlight sensor - Google Patents
A kind of sunlight sensor Download PDFInfo
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- CN206959986U CN206959986U CN201720733245.4U CN201720733245U CN206959986U CN 206959986 U CN206959986 U CN 206959986U CN 201720733245 U CN201720733245 U CN 201720733245U CN 206959986 U CN206959986 U CN 206959986U
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- operational amplifier
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Abstract
It the utility model is related to sensor field, provide a kind of sunlight sensor, including photosensitive circuit plate, sensing circuit plate, the first contact pin and the second contact pin, the photosensitive circuit plate includes sensitive component, the both ends of the sensitive component pass through the first contact pin and the second contact pin and sensing circuit plate grafting respectively, the both ends of the sensitive component are electrically connected by the first contact pin and the second contact pin with sensing circuit plate respectively, and the photosensitive circuit plate is by the first contact pin and the second pin support in the top of sensing circuit plate.Sunlight sensor provided by the utility model realizes that space availability ratio is high, compact-sized by two pieces of circuit boards, meets assembling product and performance requirement, and luminous sensitivity is high, and electromagnetic interference is few.
Description
Technical field
It the utility model is related to sensor field, more particularly to a kind of sunlight sensor.
Background technology
Sunlight sensor is generally used on automobile, for sensing intensity of illumination and adjusting air-conditioner temperature or control car light.
Existing sunlight sensor induction sensitivity is relatively low, when sunshine becomes strong outside car, is irradiated to in-car, human body can be experienced at once
Discomfort, but now temperature does not raise at once, air-conditioning system can not adjust in time；When sunshine dies down, temperature also will not
Reduce at once, thus air-conditioning system keeps original state, but occupant will feel colder, not feel well；When car passes through tunnel
Light intensity is dimmed in a short period of time during road will not automatically turn on headlight, have a significant impact to pilot's line of vision.And existing sun
The volume of optical sensor is larger, is unfavorable for integrated and extensive use.
It is therefore desirable to design a kind of sunlight sensor, to overcome above mentioned problem.
Utility model content
The purpose of this utility model is the defect for overcoming prior art, there is provided a kind of sunlight sensor, to cause sun
The structure of optical sensor is more small, sensing is sensitiveer.
What the utility model was realized in：
The utility model provides a kind of sunlight sensor, including one
Further,
Further,
Further,
Further,
Further,
The utility model has the advantages that：
1st, sunlight sensor includes photosensitive circuit plate and sensing circuit plate, passes through between photosensitive circuit plate and sensing circuit plate
First contact pin and the electrical connection of the second contact pin, the first contact pin and the second contact pin not only realize photosensitive circuit plate and sensing circuit plate it
Between electrical connection, photosensitive circuit plate is also supported in the top of sensing circuit plate so that the space structure of sunlight sensor is smaller；
2nd, lens are set up, prevent the light that other objects reflect from producing interference to sunlight sensor；
3rd, filter is set up, only allows the visible ray of specific wavelength by filtering out the light of other wavelength.
4th, feedback circuit includes two-stage calculation amplifier, and the feedback regulation for the voltage of photodiode negative pole is more smart
The sensing of standard, i.e. sunlight sensor for light is sensitiveer.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the required accompanying drawing used is briefly described in description of the prior art, it should be apparent that, drawings in the following description are only
It is some embodiments of the utility model, for those of ordinary skill in the art, is not paying the premise of creative work
Under, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is a kind of company of the photosensitive circuit plate with sensing circuit plate for sunlight sensor that the utility model embodiment provides
Connect relation schematic diagram；
Fig. 2 is the structural representation of the photosensitive circuit plate of sunlight sensor a kind of, sensing circuit plate and lens that Fig. 1 is provided
Figure；
Fig. 3 is a kind of overall structure diagram for sunlight sensor that Fig. 1 is provided；
Fig. 4 is a kind of circuit theory diagrams for sunlight sensor that Fig. 1 is provided；
Fig. 5 is the circuit diagram on a kind of sensing circuit plate for sunlight sensor that Fig. 1 is provided；
Fig. 6 is the circuit diagram on a kind of photosensitive circuit plate for sunlight sensor that Fig. 1 is provided；
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describing, it is clear that described embodiment is only the utility model part of the embodiment, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The all other embodiment obtained, belong to the scope of the utility model protection.
Such as Fig. 1, the utility model embodiment provides a kind of sunlight sensor, including photosensitive circuit plate 1, sensing circuit plate 2,
First contact pin 31 and the second contact pin 32, photosensitive circuit is integrated on photosensitive circuit plate 1, sensing circuit is integrated on sensing circuit plate.
Photosensitive circuit plate 1 includes sensitive component, and sensitive component realizes opto-electronic conversion.The both ends of sensitive component pass through first respectively
The contact pin 32 of contact pin 31 and second electrically connects with sensing circuit plate 2, and the both ends of sensitive component pass through the first contact pin 31 and respectively
Two contact pins 32 and the grafting of sensing circuit plate 2, the photosensitive circuit plate 1 are supported in sensing by the first contact pin 31 and the second contact pin 32
The top of circuit board 2, the first contact pin 31 and the second contact pin 32 are not only realized between photosensitive circuit plate 1 and sensing circuit plate 2
Electrical connection, and photosensitive circuit plate 1 is supported in the top of sensing circuit plate 2 by way of grafting so that optical sensor it is whole
Body more compact structure, smaller, the top that photosensitive circuit plate 1 is located at sensing circuit plate 2 is also beneficial to the reception of light.The utility model
The optical sensor that embodiment is provided, photosensitive circuit and sensing circuit are integrated on two pieces of circuit boards respectively, two pieces of circuit boards
Between by contact pin realize electrical connection and support connect, on the premise of optical sensor function is realized, reduce optical sensor
Volume, be easy to optical sensor is integrated in use.
Preferably, as Fig. 1, in addition to two support contact pins 4, the photosensitive circuit plate 1 are inserted by the first contact pin 31, second
Pin 32 and two support contact pins 4 are supported in the top of sensing circuit plate 2.Only supported by the first contact pin 31 and the second contact pin 32
Photosensitive circuit plate 1, the physical connection structural instability between photosensitive circuit plate 1 and sensing circuit plate 2, therefore increase support contact pin
4, support contact pin 4 between photosensitive circuit plate 1 and sensing circuit plate 2 with, without electrically connecting, only playing a supportive role so that photosensitive electricity
Physical connection structure between road plate 1 and sensing circuit plate 2 is more firm.Certainly, support contact pin 4 can also be other numbers,
Above-mentioned technique effect can be achieved.
Preferably, as Fig. 2, in addition to lens 5, the lens 5 cover the sensitized lithography of the sensitive component.Lens 5
Prevent the light that other objects reflect produces to sensitive component from interfering and putting together sunshine so that sunlight sensor
Photosensitive sensitiveer, output is more stable.
Preferably, as Fig. 3, in addition to base 6 and filter 7, the base 6 are located at the lower section of sensing circuit plate 2, the filter
Light device 7 covers photosensitive circuit plate 1 and sensing circuit plate 2, and filter 7 connects with the encapsulation of base 6, photosensitive circuit plate 1 and biography
In the structure that inductive circuit plate 2 is respectively positioned on base 6 and the encapsulation of filter 7 is formed, the base 6 (does not show provided with buckle in figure
Go out).The visible ray of 7 permission specific wavelengths of filter is by filtering out the light of other wavelength, preventing the light of other wavelength to sunlight
The luminous sensitivity of sensor has an impact.Photosensitive circuit plate 1 and sensing circuit plate 2 pass through the first contact pin 31, the second contact pin 32
And support contact pin is assembled together to form circuit board assemblies, on the circuit board assemblies that the Gai Yi of filter 7 is assembled, filter
7 encapsulate circuit board assemblies with base 6.Sunlight sensor is installed by the buckle on base 6 and fixed, convenient use.
Preferably, such as Fig. 4, the sensing circuit plate 2 includes mu balanced circuit, bleeder circuit and feedback circuit, described anti-
Current feed circuit includes reference voltage input and virtual voltage input.The output end connection bleeder circuit of the mu balanced circuit
Input, mu balanced circuit output burning voltage, bleeder circuit carry out partial pressure and output reference electricity to the output voltage of mu balanced circuit
Press signal.The output end connection reference voltage input of the bleeder circuit, the reference voltage signal input feedback of bleeder circuit
The reference voltage input of circuit.One end of the sensitive component is electrically connected by the output end of the first contact pin 31 and mu balanced circuit
Connect, mu balanced circuit provides burning voltage for sensitive component.The other end of the sensitive component is by the second contact pin 32 and in fact
Border voltage input end electrical connection, the sensing circuit plate also include transfer resistance, and second contact pin is connected with sensing circuit plate
One end be grounded by transfer resistance, sensitive component converts optical signals to current signal, and transfer resistance turns current signal
Change actual voltage signal into, the virtual voltage input of the actual voltage signal input feedback circuit.Feedback circuit realizes benchmark
The comparison of voltage signal and actual voltage signal simultaneously drives external circuit (such as according to comparative result：Air-conditioning circuit, car light circuit)
Respond.
Preferably, as Fig. 5-Fig. 6, the mu balanced circuit include commutation diode D1, current-limiting resistance R1, voltage-regulator diode
ZD1 and the capacitance that the first filter capacitor C1, current-limiting resistance R1 resistance are 2K Ω, the first filter capacitor C1 are 100PF.Power supply connects
Enter commutation diode D1, commutation diode D1 converts alternating current to direct current.Commutation diode D1 connection current-limiting resistance R1, limit
Leakage resistance R1 prevents that input current is excessive.Current-limiting resistance R1 connection voltage-regulator diodes ZD1 negative pole, voltage-regulator diode ZD1 is just
Pole is grounded, and current-limiting resistance R1 connects with voltage-regulator diode ZD1 and realizes the clamper of voltage, when load current reduces, current-limiting resistance
R1 both end voltages drop just declines, and the output voltage of mu balanced circuit rises, i.e. the backward voltage of voltage-regulator diode ZD1 rises, voltage stabilizing
Diode ZD1 electric current rises, voltage-regulator diode ZD1 electric current by current-limiting resistance R1, current-limiting resistance R1 tube voltage drop just on
Rise, output voltage declines, and as a result the output voltage of mu balanced circuit is kept constant, realizes voltage regulation result.First filter capacitor C1 with
Voltage-regulator diode ZD1 parallel connections strobe.
Preferably, such as Fig. 5-Fig. 6, the bleeder circuit includes the first divider resistance R2 and the second divider resistance, second point
Piezoresistance includes resistance R3 and resistance R5, and the first divider resistance R2 resistances are 430K Ω, and resistance R3 resistances are 26.7K Ω, resistance
R5 resistances are 100 Ω.Voltage-regulator diode ZD1 negative pole connects the first divider resistance, and mu balanced circuit provides stable for bleeder circuit
Voltage.First divider resistance R2 connections resistance R5, resistance R5 connection resistance R3, resistance R3 ground connection, the first divider resistance R2, resistance
Voltage divide function is realized in R5 and resistance R3 series connection.Common port connection reference voltage between first divider resistance R2 and resistance R5 is defeated
Enter end, resistance R5 both end voltages and resistance R3 both end voltage sums are as reference voltage.
Preferably, if Fig. 5-Fig. 6, the sensitive component are photodiode PD1, the photosensitive circuit plate 1 also includes
Second filter capacitor C3, the second filter capacitor C3 is in parallel with photodiode PD1, and the second filter capacitor C3 capacitances are
100PF, the second filter capacitor C3 strobe.Photodiode PD1 positive pole draws No. three pin YJ3, voltage-regulator diode
ZD1 negative pole is electrically connected by the first contact pin 31 with No. three pin YJ3, and voltage-regulator diode ZD1 is provided surely for photodiode PD1
Determine voltage.The virtual voltage input end of feedback circuit draws No. four pin YJ4, and photodiode PD1 negative pole passes through second
Contact pin 32 electrically connects with No. four pin YJ4.Sensing circuit plate also includes transfer resistance R4, and transfer resistance R4 resistance is 910K
Ω, second contact pin 32 are grounded with one end that sensing circuit plate 2 is connected by transfer resistance R4, and photodiode PD1 is by light
Signal is converted to current signal, and current signal is converted to voltage signal by transfer resistance R4, the voltage signal input feedback circuit
Virtual voltage input.
Preferably, as Fig. 5-Fig. 6, the feedback circuit include the first operational amplifier U1, feedback resistance R6 and the 3rd
Filter capacitor C2, feedback resistance R6 resistance are that 330K Ω, the 3rd filter capacitor C2 capacitance are 100NF.First operation amplifier
Device U1 input end in the same direction draws No. four pin YJ4, by the between photodiode PD1 negative pole and No. four pin YJ4
One contact pin 31 electrically connects, and actual voltage signal inputs the first operational amplifier U1 input in the same direction.First divider resistance R2 and
Common port between resistance R5 connects the first operational amplifier U1 reverse input end, and reference voltage signal inputs the first computing and put
Big device U1 reverse input end.Actual voltage signal and reference voltage signal are compared by the first operational amplifier U1.Instead
Feed resistance R6 is connected between the first operational amplifier U1 reverse input end and the first operational amplifier U1 output end, is fed back
Resistance R6 feeds back to comparative result the first operational amplifier U1 reverse input end, feedback calibration reference voltage signal.3rd
Filter capacitor C2 be connected on the first operational amplifier U1 input in the same direction and the first operational amplifier U1 reverse input end it
Between, the 3rd filter capacitor C2 effect is that the in-phase input end and reverse input end in the first operational amplifier U1 absorb and done
Signal is disturbed, allows interference signal not enter the first operational amplifier substantially, interference AC signal will not be by the first operational amplifier U1
Amplification, burning voltage.Adjusted during no light for positive feedback, the first operational amplifier U1 output end is positive pole, and the first computing is put
Big device U1 output end voltage, which acts on feedback resistance R6 and produces a feedback current, is superimposed upon the first operational amplifier U1's
On input in the same direction so that the numerical value increase of the net input current of the first operational amplifier；It is negative when illumination gradually strengthens
Feedback regulation, photoelectric current caused by photodiode PD1 also increases therewith when illumination strengthens so that transfer resistance R4 both ends electricity
Pressure increase, when transfer resistance R4 both end voltages are more than the first operational amplifier U1 input terminal voltage in the same direction, the first computing is put
Big device U1 output end is negative pole, now acts on electric current and the first operational amplifier U1 reverse input end on feedback resistance R6
The sense of current causes on the contrary, electric current shunts to the first operational amplifier U1 reverse input end electric current on feedback resistance R6
The net input current of first operational amplifier U1 reverse input end reduces.
Preferably, such as Fig. 5-Fig. 6, the feedback circuit also includes the second operational amplifier U2 and output resistance R7, defeated
The resistance for going out resistance R7 is 200 Ω.Common port between first divider resistance R2 and resistance R5 connects the second operational amplifier U2
Input in the same direction, i.e. the first operational amplifier U1 input in the same direction and the second operational amplifier U2 input in the same direction connects
Enter reference voltage signal.First operational amplifier U1 output end connects the second operational amplifier U2 reverse input end, will be through
Cross the first operational amplifier U1 calibration output voltage signal input the second operational amplifier U2 reverse input end, again with base
Quasi- voltage signal is compared and calibrated.Second operational amplifier U2 output end connects output resistance R7, and output resistance R7 has
Metering function, the first operational amplifier U1 and the second operational amplifier U2 is protected, prevents the first operational amplifier of overcurrent damage U1
With the second operational amplifier U2.Output resistance R7 connections external circuit is (such as：Air-conditioning circuit, car light circuit), the second operation amplifier
Change of the device U2 output signal driving external circuit to luminous intensity responds.
Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility model
Within the spirit and principle of utility model, any modification, equivalent substitution and improvements made etc., the utility model should be included in
Protection domain within.
Claims (10)
1. a kind of sunlight sensor, it is characterised in that inserted including photosensitive circuit plate, sensing circuit plate, the first contact pin and second
Pin, the photosensitive circuit plate include sensitive component, and the both ends of the sensitive component are inserted by the first contact pin and second respectively
Pin and sensing circuit plate grafting, the both ends of the sensitive component pass through the first contact pin and the second contact pin and sensing circuit plate respectively
Electrical connection, the photosensitive circuit plate is by the first contact pin and the second pin support in the top of sensing circuit plate.
2. sunlight sensor as claimed in claim 1, it is characterised in that：Also include multiple support contact pins, the photosensitive circuit
Plate is by multiple support pin supports in the top of sensing circuit plate.
3. sunlight sensor as claimed in claim 1, it is characterised in that：Also include lens, the lens cover residence is stated photosensitive
The sensitized lithography of component.
4. sunlight sensor as claimed in claim 1, it is characterised in that：Also include base and filter, the base is located at
Below sensing circuit plate, the filter encapsulates with base, and the photosensitive circuit plate and sensing circuit plate are respectively positioned on encapsulation knot
In structure, the base is provided with buckle.
5. sunlight sensor as claimed in claim 1, it is characterised in that：The sensing circuit plate includes mu balanced circuit, partial pressure
Circuit and feedback circuit, the feedback circuit include reference voltage input and virtual voltage input, the voltage stabilizing electricity
The input of the output end connection bleeder circuit on road, the output end connection reference voltage input of the bleeder circuit, the sense
One end of optic component is electrically connected by the first contact pin with the output end of mu balanced circuit, and the other end of the sensitive component passes through
Second contact pin electrically connects with virtual voltage input, and the sensing circuit plate also includes transfer resistance, and second contact pin is with passing
One end of inductive circuit plate connection is grounded by transfer resistance.
6. sunlight sensor as claimed in claim 5, it is characterised in that：The mu balanced circuit includes commutation diode, current limliting
Resistance, voltage-regulator diode and the first filter capacitor, commutation diode described in plant-grid connection, the commutation diode connect current limliting
Resistance, the negative pole of the current-limiting resistance connection voltage-regulator diode, the plus earth of the voltage-regulator diode, first filtered electrical
Hold in parallel with voltage-regulator diode.
7. sunlight sensor as claimed in claim 6, it is characterised in that：The bleeder circuit includes the first divider resistance and the
Two divider resistances, the negative pole of the voltage-regulator diode connect the first divider resistance, and first divider resistance passes through the second partial pressure
Resistance eutral grounding, the common port connection reference voltage input between first divider resistance and the second divider resistance.
8. sunlight sensor as claimed in claim 7, it is characterised in that：The sensitive component is photodiode, described
Photosensitive circuit plate also includes the second filter capacitor, and second filter capacitor is in parallel with photodiode, the voltage-regulator diode
Negative pole electrically connected by the first contact pin with the positive pole of photodiode, the negative pole of the photodiode by the second contact pin with
Virtual voltage input electrically connects.
9. sunlight sensor as claimed in claim 8, it is characterised in that：The feedback circuit include the first operational amplifier,
Between the input in the same direction of feedback resistance and the 3rd filter capacitor, the negative pole of the photodiode and the first operational amplifier
Electrically connected by the first contact pin, the common port between first divider resistance and the second divider resistance connects the first operation amplifier
The reverse input end of device, the feedback resistance are connected on the reverse input end and first operational amplifier of the first operational amplifier
Between output end, the 3rd filter capacitor is connected on the input in the same direction and the first operational amplifier of the first operational amplifier
Between reverse input end.
10. sunlight sensor as claimed in claim 9, it is characterised in that：The feedback circuit also includes the second operation amplifier
Device and output resistance, the common port between first divider resistance and the second divider resistance connect the second operational amplifier
Input in the same direction, the reverse input end of output end the second operational amplifier of connection of first operational amplifier, described second
The output end connection output resistance of operational amplifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720733245.4U CN206959986U (en) | 2017-06-22 | 2017-06-22 | A kind of sunlight sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720733245.4U CN206959986U (en) | 2017-06-22 | 2017-06-22 | A kind of sunlight sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206959986U true CN206959986U (en) | 2018-02-02 |
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ID=61385166
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720733245.4U Active CN206959986U (en) | 2017-06-22 | 2017-06-22 | A kind of sunlight sensor |
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| Country | Link |
|---|---|
| CN (1) | CN206959986U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113624338A (en) * | 2021-08-23 | 2021-11-09 | 深圳市杰芯创电子科技有限公司 | Photoelectric detection chip and method for smart home |
-
2017
- 2017-06-22 CN CN201720733245.4U patent/CN206959986U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113624338A (en) * | 2021-08-23 | 2021-11-09 | 深圳市杰芯创电子科技有限公司 | Photoelectric detection chip and method for smart home |
| CN113624338B (en) * | 2021-08-23 | 2024-06-11 | 深圳市杰芯创电子科技有限公司 | Photoelectric detection chip and method for smart home |
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