CN208921908U - Optocoupler sensor circuit and projector - Google Patents
Optocoupler sensor circuit and projector Download PDFInfo
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- CN208921908U CN208921908U CN201821403489.7U CN201821403489U CN208921908U CN 208921908 U CN208921908 U CN 208921908U CN 201821403489 U CN201821403489 U CN 201821403489U CN 208921908 U CN208921908 U CN 208921908U
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Abstract
The utility model discloses a kind of optocoupler sensor circuit and projector, and wherein optocoupler sensor circuit includes power circuit, optocoupler sensor and current-limiting circuit；Optocoupler sensor includes emitter pin, collector pin, negative electrode pin and negative electrode pin, and power circuit is separately connected with the collector pin of optocoupler sensor, negative electrode pin, and the emitter pin and emitter pin of optocoupler sensor are connect with current-limiting circuit；The emitter pin of optocoupler sensor is also connect with controller；Wherein power circuit, for powering to optocoupler sensor；Current-limiting circuit, for limiting the operating current size of optocoupler sensor；Optocoupler sensor, for carrying out Phototube Coupling, output to controller to the signal of acquisition.Technical solutions of the utility model improve the optocoupler sensor response time.
Description
Technical field
The utility model relates to electronic circuit technology field, in particular to a kind of optocoupler sensor circuit and projector.
Background technique
Optocoupler sensor is the device for carrying out transmission telecommunications number using light as medium, usually photophore (two pole of infrared light emission
Pipe LED) it is encapsulated in same shell with light-receiving device (photosensitive semiconductor pipe).When input terminal power up signal, photophore issues light
Line, light-receiving device receives just to generate photoelectric current after light, flow out from output end, to realize " electricity-light-electricity " conversion.
Existing optocoupler sensor includes that there are four pins, and emitter pin, collector pin, negative electrode pin and cathode draw
Foot, wherein collector pin is connect with the collector of the photosensitive semiconductor pipe in optocoupler sensor, and collector pin is by sampling
Signal is transmitted to controller and is handled.Since the ramp time of the signal of the collector output of photosensitive semiconductor pipe is longer, make
It is long at the optocoupler response time.
Utility model content
The main purpose of the utility model is to provide a kind of optocoupler sensor circuit, and purport improves the sound of optocoupler sensor circuit
Answer speed.
Above-mentioned purpose, the utility model proposes optocoupler sensor circuit include power circuit, optocoupler sensor and current limliting
Circuit；The optocoupler sensor includes emitter pin, collector pin, negative electrode pin and negative electrode pin, the power circuit
It is separately connected with the collector pin of the optocoupler sensor, negative electrode pin, the emitter pin and yin of the optocoupler sensor
Pole pin is connect with the current-limiting circuit；The emitter pin of the optocoupler sensor is also connect with controller；Wherein
The power circuit, for powering to the optocoupler sensor；
The current-limiting circuit, for limiting the operating current size of optocoupler sensor；
The optocoupler sensor, for carrying out Phototube Coupling, output to the controller to the signal of acquisition.
Preferably, the power circuit includes DC power supply, the DC power supply respectively with the collector pin and sun
The connection of pole pin.
Preferably, the current-limiting circuit includes first resistor and second resistance, the first end of the first resistor with it is described
The connection of emitter pin, the second end ground connection of the first resistor, the first end of the second resistance and the negative electrode pin connect
It connects, the second end ground connection of the second resistance；The emitter pin is also connect with the controller.
Preferably, the Standard resistance range of the first resistor is 90K Ω ~ 110K Ω (kilohm).
Preferably, the Standard resistance range of the second resistance is the Ω of 180 Ω ~ 220 (ohm).
Preferably, the direct current power source voltage is 3.3V.
To achieve the above object, the utility model also proposes that a kind of projector, the projector include light as described above
Coupling sensor circuit.
Technical solutions of the utility model form a kind of light by setting power circuit, optocoupler sensor and current-limiting resistance
Coupling sensor circuit.Power circuit is the power supply of optocoupler sensor, and current circuit makes optocoupler sensor current work in normal model
In enclosing, and sampled signal is provided for controller.Due to the emitter that optocoupler sensor output sampled signal is optocoupler sensor
Pin, the emitter pin are connect with the emitter of optocoupler sensor light sensitive semiconductor element, the ramp time of output signal
It is smaller, to improve the reaction time of optocoupler sensor circuit.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, the structure that can also be shown according to these attached drawings obtains other attached drawings.
Fig. 1 is the structural schematic diagram of one embodiment of the utility model optocoupler sensor circuit.
Drawing reference numeral explanation:
| Label | Title | Label | Title |
| 100 | Power supply | VCC | DC power supply |
| 200 | Optocoupler sensor | R1 | First resistor |
| 300 | Current-limiting circuit | R2 | Second resistance |
The embodiments will be further described with reference to the accompanying drawings for the realization, functional characteristics and advantage of the utility model aim.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describing, it is clear that described embodiment is only a part of the embodiment of the utility model, rather than all
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative work premise
Under every other embodiment obtained, fall within the protection scope of the utility model.
It is to be appreciated that the directional instruction (such as up, down, left, right, before and after ...) of institute in the utility model embodiment
It is only used for explaining in relative positional relationship, the motion conditions etc. under a certain particular pose (as shown in the picture) between each component, such as
When the fruit particular pose changes, then directionality instruction also correspondingly changes correspondingly.
In addition, the description for being related to " first ", " second " etc. in the present invention is used for description purposes only, and cannot understand
For its relative importance of indication or suggestion or implicitly indicate the quantity of indicated technical characteristic.Define as a result, " first ",
The feature of " second " can explicitly or implicitly include at least one of the features.In addition, the technical side between each embodiment
Case can be combined with each other, but must be based on can be realized by those of ordinary skill in the art, when the combination of technical solution
Occur it is conflicting or when cannot achieve should people think that the combination of this technical solution is not present, also do not wanted in the utility model
Within the protection scope asked.
The utility model proposes a kind of optocoupler sensor circuits.
Referring to Fig.1, in the utility model embodiment, which includes
Power circuit 100, optocoupler sensor 200 and current-limiting circuit 300；The optocoupler sensor 200 includes emitter pin, collector
Pin, negative electrode pin and negative electrode pin, collector pin, the anode of the power circuit 100 and the optocoupler sensor 200 draw
Foot is separately connected, and the emitter pin and negative electrode pin of the optocoupler sensor 200 are connect with the current-limiting circuit 300；Institute
The sampling pin for stating optocoupler sensor 200 is connect with controller；Wherein
The power circuit 100, for powering to the optocoupler sensor 200；The current-limiting circuit 300, for limiting
The operating current size of optocoupler sensor 200；The optocoupler sensor 200, it is defeated for carrying out Phototube Coupling to the signal of acquisition
Out to the controller.
It should be noted that optocoupler sensor 200 includes photophore and light-receiving device, photophore is usually light-emitting diodes
Pipe, light-receiving device is usually phototriode.The ramp time of the emitter of phototriode is less than the ramp time of collector,
This is determined by triode attribute itself.
In the present embodiment, the signal that controller is received is exported by the emitter of phototriode, therefore, reaction
Time gets a promotion.
Technical solutions of the utility model are formd by setting power circuit 100, optocoupler sensor 200 and current-limiting resistance
A kind of 200 circuit of optocoupler sensor.Power circuit 100 is the power supply of optocoupler sensor 200, and current circuit makes optocoupler sensor
200 current works provide sampled signal for controller in normal range (NR).Since optocoupler sensor 200 exports sampled signal
It is the emitter pin of optocoupler sensor 200, the transmitting of the emitter pin and 200 photosensitive semiconductor device of optocoupler sensor
Pole connection, the ramp time of output signal is smaller, to improve the reaction time of 200 circuit of optocoupler sensor.
Further, the power circuit 100 include DC power supply, the DC power supply respectively with the collector pin
And negative electrode pin connection.In the present embodiment, use voltage for the DC power supply of 3.3V.
Please continue to refer to Fig. 1, the current-limiting circuit 300 includes first resistor and second resistance, and the of the first resistor
One end is connect with the emitter pin, the second end of first resistor ground connection, the first end of the second resistance with it is described
Negative electrode pin connection, the second end ground connection of the second resistance；The emitter pin is also connect with the controller.Current limliting electricity
Road 300 guarantees the operating current of optocoupler sensor 200 in the normal range, avoids electric current is excessive from causing device failure.
The Standard resistance range of the first resistor is 90K Ω ~ 110K Ω (kilohm).The Standard resistance range of the second resistance is
The Ω of 180 Ω ~ 220 (ohm).In the present embodiment, first resistor resistance value is 100K Ω, and the resistance value of second resistance is 200 Ω.
Connection principle and used principle phase in the prior art in technical solutions of the utility model, on hardware circuit
Instead, the emitter pin2 and anode pin1 of light idol are changed to power, and emitter pin3 foot connects 100K resistance to ground, and is connected to outside
Connector.Cathode pin4 foot connects 200R resistance to ground.Light idol sensor circuit connection can effectively improve light in the utility model
The even response time.
The utility model also proposes a kind of projector, which includes above-mentioned optocoupler sensor circuit, optocoupler sensing
The specific structure of device circuit is referring to above-described embodiment, since this thermostatic control projector uses the whole of above-mentioned all embodiments
Technical solution, therefore at least all beneficial effects brought by the technical solution with above-described embodiment, no longer go to live in the household of one's in-laws on getting married one by one herein
It states.
The above is only the preferred embodiment of the present invention, and therefore it does not limit the scope of the patent of the utility model,
It is all under the inventive concept of the utility model, equivalent structure made based on the specification and figures of the utility model becomes
It changes, or directly/be used in other related technical areas indirectly and be included in the scope of patent protection of the utility model.
Claims (7)
1. a kind of optocoupler sensor circuit, which is characterized in that the optocoupler sensor circuit includes power circuit, optocoupler sensor
And current-limiting circuit；The optocoupler sensor includes emitter pin, collector pin, negative electrode pin and negative electrode pin, the electricity
Source circuit is separately connected with the collector pin of the optocoupler sensor, negative electrode pin, and the emitter of the optocoupler sensor draws
Foot and negative electrode pin are connect with the current-limiting circuit；The emitter pin of the optocoupler sensor is also connect with controller；Its
In
The power circuit, for powering to the optocoupler sensor；
The current-limiting circuit, for limiting the operating current size of optocoupler sensor；
The optocoupler sensor, for carrying out Phototube Coupling, output to the controller to the signal of acquisition.
2. optocoupler sensor circuit as described in claim 1, which is characterized in that the power circuit includes DC power supply, institute
DC power supply is stated to connect with the collector pin and negative electrode pin respectively.
3. optocoupler sensor circuit as claimed in claim 2, which is characterized in that the direct current power source voltage is 3.3V.
4. optocoupler sensor circuit as described in claim 1, which is characterized in that the current-limiting circuit includes first resistor and
Two resistance, the first end of the first resistor are connect with the emitter pin, the second end ground connection of the first resistor, described
The first end of second resistance is connect with the negative electrode pin, the second end ground connection of the second resistance；The emitter pin is also
It is connect with the controller.
5. optocoupler sensor circuit as claimed in claim 4, which is characterized in that the Standard resistance range of the first resistor is 90K
Ω ~ 110K Ω (kilohm).
6. optocoupler sensor circuit as claimed in claim 4, which is characterized in that the Standard resistance range of the second resistance is 180
The Ω of Ω ~ 220 (ohm).
7. a kind of projector, which is characterized in that the projector includes the optocoupler as described in any one of claim 1 to 6
Sensor circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821403489.7U CN208921908U (en) | 2018-08-29 | 2018-08-29 | Optocoupler sensor circuit and projector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821403489.7U CN208921908U (en) | 2018-08-29 | 2018-08-29 | Optocoupler sensor circuit and projector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208921908U true CN208921908U (en) | 2019-05-31 |
Family
ID=66704595
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821403489.7U Active CN208921908U (en) | 2018-08-29 | 2018-08-29 | Optocoupler sensor circuit and projector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208921908U (en) |
-
2018
- 2018-08-29 CN CN201821403489.7U patent/CN208921908U/en active Active
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