CN216848191U - Infrared light detection circuit and electronic equipment - Google Patents
Infrared light detection circuit and electronic equipment Download PDFInfo
- Publication number
- CN216848191U CN216848191U CN202220116624.XU CN202220116624U CN216848191U CN 216848191 U CN216848191 U CN 216848191U CN 202220116624 U CN202220116624 U CN 202220116624U CN 216848191 U CN216848191 U CN 216848191U
- Authority
- CN
- China
- Prior art keywords
- infrared
- circuit
- resistor
- tubes
- receiving
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Geophysics And Detection Of Objects (AREA)
Abstract
The utility model discloses an infrared light detection circuit and electronic equipment, this infrared light detection circuit includes: the infrared emission circuit is provided with a plurality of infrared emission tubes which are arranged in parallel and used for emitting infrared signals; the infrared receiving circuit is provided with a plurality of infrared receiving tubes which are arranged in series; each infrared receiving tube and one infrared transmitting tube form a group of infrared pair tubes, the infrared receiving tubes are used for receiving infrared signals transmitted by the corresponding infrared transmitting tubes, and when any group of infrared pair tubes is triggered, corresponding detection signals are output; the signal processing circuit is connected with the output end of the infrared receiving circuit and is used for outputting a corresponding trigger signal after performing signal processing on the received detection signal. The utility model provides a when infrared detection on a large scale, infrared detection circuit structure is complicated and manufacturing cost is high problem.
Description
Technical Field
The utility model relates to an infrared detection field, in particular to infrared light detection circuit and electronic equipment.
Background
Along with the development of science and technology, the application field of infrared detection technique is also more and more extensive, and whether infrared detection technique can detect human body or object through certain region, and a set of infrared geminate transistor can detect certain scope, however adopt the infrared geminate transistor of multiunit mostly when detecting on a large scale at present, every group is used for detecting certain region respectively, and is independent mutually between the infrared geminate transistor of every group, makes circuit design more complicated like this, and manufacturing cost is higher.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an infrared light detection circuit and electronic equipment aims at solving infrared detection time measuring on a large scale, and infrared detection circuit structure is complicated and manufacturing cost is high problem.
In order to achieve the above object, the utility model provides an infrared light detection circuit is applied to electronic equipment, and this infrared light detection circuit includes:
the infrared emission circuit is provided with a plurality of infrared emission tubes, the plurality of infrared emission tubes are arranged in parallel, and the plurality of infrared emission tubes are used for emitting infrared signals;
the infrared receiving circuit is provided with a plurality of infrared receiving tubes, and the infrared receiving tubes are arranged in series; each infrared receiving tube and one infrared transmitting tube form a group of infrared pair tubes, the infrared receiving tubes are used for receiving infrared signals transmitted by the corresponding infrared transmitting tubes, and when any group of infrared pair tubes is triggered, corresponding detection signals are output;
and the signal processing circuit is connected with the output end of the infrared receiving circuit and is used for performing signal processing on the received detection signal and then outputting a corresponding trigger signal.
Optionally, the infrared emission circuit further includes a first resistor, a first end of the first resistor is connected to a first dc power supply, and a second end of the first resistor is interconnected with the anodes of the plurality of infrared emission tubes.
Optionally, the infrared receiving circuit further includes a second resistor, a first end of the second resistor is connected to the first dc power supply, and a second end of the second resistor is sequentially connected to the plurality of infrared receiving tubes in series.
Optionally, the signal processing circuit includes a third resistor, a fourth resistor, a fifth resistor, and a first optical coupler, a first end of the third resistor is connected to the output end of the infrared receiving circuit, a second end of the third resistor is connected to the anode of the first optical coupler, the cathode of the first optical coupler is grounded, the collector of the first optical coupler is connected to the first end of the fourth resistor, the emitter of the first optical coupler and the first end of the fifth resistor are connected to the control circuit, the second end of the fourth resistor is connected to the second dc power supply, and the second end of the fifth resistor is grounded.
The utility model also provides an electronic equipment, this electronic equipment reaches as above including controlled device the infrared light detection circuit.
Optionally, the electronic device further comprises:
and the control circuit is connected with the output end of the signal processing circuit and is used for controlling the controlled device to work when receiving the trigger signal.
Optionally, the electronic device further comprises:
the control circuit is used for outputting a trigger signal when receiving the trigger signal;
the prompting circuit is used for working when receiving the prompting signal so as to send out triggering information.
Optionally, the prompt circuit includes a sixth resistor and an LED lamp, a first end of the sixth resistor is interconnected with the control circuit, a second end of the sixth resistor is connected with the first end of the LED lamp, and a second end of the LED lamp is grounded.
The technical scheme of the utility model is that a plurality of groups of infrared geminate transistors are formed by connecting the infrared transmitting tube in parallel and connecting the infrared receiving tube in series, when detecting that a human body or an object passes through the detection range of the infrared geminate transistors, the infrared receiving circuit outputs corresponding detection signals to the signal processing circuit, and the signal processing circuit processes different detection signals and then outputs uniform trigger signals; the infrared detection circuit consisting of the infrared transmitting circuit, the infrared receiving circuit and the signal processing circuit has simple structure and low production cost. The utility model provides a when infrared detection on a large scale, infrared detection circuit structure is complicated and manufacturing cost is high problem.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic diagram of functional modules of an embodiment of the infrared light detection circuit of the present invention;
fig. 2 is a schematic circuit structure diagram of an embodiment of an infrared transmitting circuit and an infrared receiving circuit in the infrared light detection circuit of the present invention;
fig. 3 is a schematic circuit diagram of an embodiment of a signal processing circuit in the infrared light detection circuit of the present invention;
fig. 4 is a schematic diagram of functional modules of an embodiment of the electronic device of the present invention;
fig. 5 is a schematic diagram of functional modules of another embodiment of the electronic device of the present invention;
fig. 6 is a schematic circuit diagram of an embodiment of a prompt circuit in an electronic device according to the present invention.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) | |
| 10 | Infrared light detection circuit | R1～R6 | First to |
|
| 11 | Infrared emission circuit | IR | |
|
| 12 | Infrared receiving circuit | D | |
|
| 13 | Signal processing circuit | U1 | First |
|
| 20 | Controlled device | | LED lamp | |
| 30 | Control circuit | V1 | First direct |
|
| 40 | Prompting circuit | V2 | Second DC power supply |
The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that, if directional indications (such as upper, lower, left, right, front and rear … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
The utility model provides an infrared light detection circuit 10 and electronic equipment.
Referring to fig. 1 and 2, in an embodiment of the present invention, the infrared light detection circuit 10 is applied to an electronic device, and the infrared light detection circuit 10 includes:
the infrared transmitting circuit 11 is provided with a plurality of infrared transmitting tubes IR, the plurality of infrared transmitting tubes IR are arranged in parallel, and the plurality of infrared transmitting tubes IR are used for transmitting infrared signals;
an infrared receiving circuit 12, wherein the infrared receiving circuit 12 is provided with a plurality of infrared receiving tubes D which are arranged in series; each infrared receiving tube D and one infrared transmitting tube IR form a group of infrared pair tubes, the infrared receiving tube D is used for receiving the infrared signals transmitted by the corresponding infrared transmitting tube IR, and when any group of infrared pair tubes is triggered, corresponding detection signals are output;
and the signal processing circuit 13 is connected with the output end of the infrared receiving circuit 12, and the signal processing circuit 13 is used for performing signal processing on the received detection signal and then outputting a corresponding trigger signal.
In this embodiment, a plurality of infrared transmitting tubes IR in the infrared transmitting circuit 11 are arranged in parallel, and do not affect each other, if one infrared transmitting tube IR breaks down, the normal operation of other infrared transmitting tubes IR is not affected, a plurality of infrared receiving tubes D in the infrared receiving circuit 12 are arranged in series, when any one infrared receiving tube D cannot receive the infrared light emitted by the infrared transmitting tube IR, the whole infrared receiving circuit 12 is not conducted, and thus a high-level electric signal is output to the signal processing circuit 13. In this embodiment, two IR transmitting tubes in the IR transmitting circuit 11 and two IR receiving tubes D in the IR receiving circuit 12 may form two sets of infrared pair tubes, which may detect whether a human body or an object passes through within a certain range; when a human body or an object is not detected to pass through the detection range, the infrared transmitting tube IR and the infrared receiving tubes D are not blocked, so that the two infrared receiving tubes D can receive infrared light rays transmitted by the infrared transmitting tube IR, the infrared receiving tubes D are conducted, the infrared receiving circuit 12 is conducted, the infrared receiving circuit 12 outputs a low-level electric signal to the signal processing circuit 13, and the signal processing circuit 13 processes the low-level electric signal and outputs a stable electric signal to the control circuit 30 in the electronic equipment; when detecting that a human body or an object passes through the detection range, the infrared transmitting tube IR and the infrared receiving tube D are blocked by the human body or the object, so that the infrared receiving tube D cannot receive the infrared light emitted by the infrared transmitting tube IR, and therefore the infrared receiving tube D is not conducted, so that the infrared receiving circuit 12 is not conducted, at this time, the infrared receiving circuit 12 outputs a high-level electric signal, that is, a detection signal to the signal processing circuit 13, and when receiving the detection signal, the signal processing circuit 13 outputs a high-level electric signal, that is, a trigger signal to the control circuit 30 in the electronic device, so that the controlled device 20 operates.
It can be understood that the more the number of infrared pair tubes are set, the larger the detectable range is, and the more than five groups of infrared pair tubes can be set in the scheme, if the number of infrared pair tubes is too many, the more the number of infrared receiving tubes D is, because the infrared receiving tubes D in the infrared receiving circuit 12 are set in series, when the more infrared receiving tubes D are turned on, the closer the electric signal output by the infrared receiving circuit 12 is to the high level, which is easy to make the signal processing circuit 13 misjudge, and when no human body or object is detected to pass through the detectable range, the trigger signal is also output, so that the controlled device 20 of the electronic device works under abnormal conditions, and resources may be wasted or dangerous conditions may be caused; because the quantity of the infrared receiving tube D of establishing ties is different, so export also different to signal processing's the signal of telecommunication when switching on, can turn into the same output signal to control circuit 30 with different input signal through signal processing circuit 13, prevent that control circuit 30 misjudge, compare in each infrared geminate transistor of group and set up a signal processing circuit 13, perhaps each infrared geminate transistor of group corresponds and sets up a input of receiving trigger signal, the utility model discloses handle the signal of telecommunication output to a signal processing circuit of the infrared geminate transistor output of multiunit, can make circuit structure simpler, low in production cost.
The technical scheme of the utility model is that a plurality of groups of infrared geminate transistors are formed by connecting the infrared transmitting tube IR in parallel and connecting the infrared receiving tube D in series, when detecting that a human body or an object passes through the detection range of the infrared geminate transistors, the infrared receiving circuit 12 outputs corresponding detection signals to the signal processing circuit 13, and the signal processing circuit 13 processes different detection signals and then outputs uniform trigger signals; the infrared detection circuit composed of the infrared transmitting circuit 11, the infrared receiving circuit 12 and the signal processing circuit 13 has a simple structure and low production cost. The utility model provides a when infrared detection on a large scale, infrared detection circuit structure is complicated and manufacturing cost is high problem.
Referring to fig. 2, in an embodiment, the infrared emitting circuit 11 further includes a first resistor R1, a first end of the first resistor R1 is connected to a first dc power source V1, and a second end of the first resistor R1 is interconnected with anodes of the infrared emitting tubes IR.
In this embodiment, the first resistor R1 functions as a current-limiting resistor, and is used to prevent the current in the infrared emitting circuit 11 from being too large, which may cause IR damage of the infrared emitting tube in the circuit; the plurality of infrared transmitting tubes are connected with one resistor in parallel, so that the circuit structure is simpler and the production cost is low; the first direct-current power supply V1 supplies power to the infrared emission circuit 11.
Referring to fig. 2, in an embodiment, the infrared receiving circuit 12 further includes a second resistor R2, a first end of the second resistor R2 is connected to the first dc power source V1, and a second end of the second resistor R2 is sequentially connected in series with the plurality of infrared receiving tubes D.
In this embodiment, the second resistor R2 functions as a pull-up resistor, and is configured to pull up the level when the infrared receiving tube D cannot receive the infrared light emitted by the infrared emitting tube IR and is not turned on; the plurality of infrared receiving tubes are connected with the resistor in series, so that the circuit structure is simpler and the production cost is low; the first dc power supply V1 supplies power to the infrared receiving circuit 12.
Referring to fig. 3, the signal processing circuit 13 includes a third resistor R3, a fourth resistor R4, a fifth resistor R5, and a first optical coupler U1, a first end of the third resistor R3 is connected to the output end of the infrared receiving circuit 12, a second end of the third resistor R3 is connected to the anode of the first optical coupler U1, the cathode of the first optical coupler U1 is grounded, the collector of the first optical coupler U1 is connected to the first end of the fourth resistor R4, the emitter of the first optical coupler U1 and the first end of the fifth resistor R5 are connected to the control circuit 30, a second end of the fourth resistor R4 is connected to the second dc power source V2, and a second end of the fifth resistor R5 is grounded.
In this embodiment, the third resistor R3 functions as a current-limiting resistor to limit the current and prevent the current from being too large and damaging the elements in the circuit, the fourth resistor R4 functions as a pull-up resistor, and the fifth resistor R5 functions as a pull-down resistor, so that the control circuit 30 can detect the change of the high and low levels; the first optical coupler U1 is used for converting unstable electric signals into optical signals and then converting the optical signals into electric signals, so that the output voltage becomes stable, the driving capability of the output voltage is enhanced, and meanwhile, the infrared receiving circuit 12 and the signal processing circuit 13 can be isolated, and the anti-interference capability is improved.
The utility model discloses still provide an electronic equipment.
Referring to fig. 4, the electronic device includes a controlled device 20 and the infrared light detection circuit 10. The specific structure of the infrared light detection circuit 10 refers to the above embodiments, and since the electronic device adopts all technical solutions of all the above embodiments, at least all the beneficial effects brought by the technical solutions of the above embodiments are achieved, and no further description is given here. When the human body or the object is not detected to pass through the detection range, the control circuit 30 in the infrared light detection circuit 10 outputs a low-level electrical signal to the controlled device 20, and the controlled device 20 does not work; when detecting that a human body or an object passes through the detection range, the signal processing circuit 13 in the infrared light detection circuit 10 outputs a high-level electrical signal, i.e., a trigger signal, to the control circuit 30, so that the controlled device 20 performs corresponding operations.
Referring to fig. 5, the infrared light detection circuit 10 further includes:
and the control circuit 30, the control circuit 30 is connected with the output end of the signal processing circuit 13, and the control circuit 30 is used for controlling the controlled device 20 to operate when receiving the trigger signal.
In this embodiment, when no human body or object passes through the detection range, the signal processing circuit 13 outputs a low-level electrical signal to the control circuit 30 according to the signal output by the infrared receiving circuit 12, the control circuit 30 can output the low-level electrical signal to the controlled device 20, and the controlled device 20 does not perform corresponding operation; when a human body or an object passes through the detection range, the signal processing circuit 13 outputs a trigger signal to the control circuit 30 according to the detection signal output by the infrared receiving circuit 12, the control circuit 30 can output a high-level electrical signal to the controlled device 20 according to the trigger signal, and the controlled device 20 performs corresponding operations. In this embodiment, the controlled device 20 can perform corresponding operations when a human body or an object passes through the detection range through the control circuit 30.
Referring to fig. 5, the infrared light detection circuit 10 further includes:
the prompt circuit 40, the prompt circuit 40 is connected with the output end of the control circuit 30, and the control circuit 30 is further configured to output a prompt signal when receiving the trigger signal;
the prompting circuit 40 is configured to operate upon receiving the prompting signal to issue a trigger message.
In this embodiment, the prompting circuit 40 may prompt the user that the human body or the object has been detected to pass through the detection range in a manner of lighting, flashing, or beeping, and under normal conditions, after the human body or the object is detected to pass through the detection range, the controlled device 20 may execute corresponding work, and if the prompting circuit 40 prompts the user that the human body or the object has been detected to pass through the detection range, but the controlled device 20 does not execute corresponding work, it is proved that the controlled device 20 of the electronic device has a fault. The present embodiment realizes the function of checking whether the controlled device 20 of the electronic apparatus malfunctions or not by prompting the user that the human body or the object has been detected to pass through the detection range through the prompting circuit 40.
Referring to fig. 6, the prompting circuit 40 includes a sixth resistor R6 and an LED lamp D1, a first end of the sixth resistor R6 is interconnected with the control circuit 30, a second end of the sixth resistor R6 is connected with a first end of the LED lamp D1, and a second end of the LED lamp D1 is grounded.
In this embodiment, the sixth resistor R6 functions as a current limiting resistor to prevent the LED lamp D1 from being burned out due to excessive current; after receiving the trigger signal output by the signal processing circuit 13, the control circuit 30 outputs a prompt signal to the prompt circuit 40, so that the LED lamp D1 in the prompt circuit 40 emits light for a period of time to prompt the user that the infrared detection circuit has detected that a human body or an object passes through the detection range, the light-emitting time of the LED lamp D1 may be set to one second, two seconds or three seconds, and the specific time may be set according to the user's requirement; if the operating state of the controlled device 20 is not changed after the LED lamp D1 is turned on, the user can know that the controlled device 20 of the electronic device is out of order.
The above is only the optional embodiment of the present invention, and not therefore the limit to the patent scope of the present invention, all the technical ideas of the present invention are utilized, the equivalent structure transformation made by the contents of the specification and the drawings, or the direct/indirect application in other related technical fields are included in the patent protection scope of the present invention.
Claims (8)
1. An infrared light detection circuit applied to an electronic device, comprising:
the infrared emission circuit is provided with a plurality of infrared emission tubes, the plurality of infrared emission tubes are arranged in parallel, and the plurality of infrared emission tubes are used for emitting infrared signals;
the infrared receiving circuit is provided with a plurality of infrared receiving tubes, and the infrared receiving tubes are arranged in series; each infrared receiving tube and one infrared transmitting tube form a group of infrared pair tubes, the infrared receiving tubes are used for receiving infrared signals transmitted by the corresponding infrared transmitting tubes, and when any group of infrared pair tubes is triggered, corresponding detection signals are output;
and the signal processing circuit is connected with the output end of the infrared receiving circuit and is used for performing signal processing on the received detection signal and then outputting a corresponding trigger signal.
2. The infrared light detection circuit of claim 1, wherein the infrared emission circuit further comprises a first resistor having a first end connected to a first dc power source and a second end interconnected to anodes of the plurality of infrared emission tubes.
3. The infrared light detection circuit of claim 1, wherein the infrared receiving circuit further comprises a second resistor, a first end of the second resistor is connected to the first dc power supply, and a second end of the second resistor is sequentially connected in series with the plurality of infrared receiving tubes.
4. The infrared light detection circuit according to claim 1, wherein the signal processing circuit includes a third resistor, a fourth resistor, a fifth resistor, and a first optical coupler, a first end of the third resistor is connected to the output terminal of the infrared receiving circuit, a second end of the third resistor is connected to an anode of the first optical coupler, a cathode of the first optical coupler is grounded, a collector of the first optical coupler is connected to a first end of the fourth resistor, an emitter of the first optical coupler and a first end of the fifth resistor are connected to the control circuit, a second end of the fourth resistor is connected to the second dc power supply, and a second end of the fifth resistor is grounded.
5. An electronic device comprising a controlled device and the infrared light detection circuit according to any one of claims 1 to 4.
6. The electronic device of claim 5, wherein the electronic device further comprises:
and the control circuit is connected with the output end of the signal processing circuit and is used for controlling the controlled device to work when receiving the trigger signal.
7. The electronic device of claim 6, wherein the electronic device further comprises:
the control circuit is used for receiving a trigger signal and outputting a prompt signal;
the prompting circuit is used for working when receiving the prompting signal so as to send out triggering information.
8. The electronic device of claim 7, wherein the alert circuit comprises a sixth resistor and an LED light, a first terminal of the sixth resistor interconnected with the control circuit, a second terminal of the sixth resistor connected to a first terminal of the LED light, and a second terminal of the LED light connected to ground.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220116624.XU CN216848191U (en) | 2022-01-17 | 2022-01-17 | Infrared light detection circuit and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220116624.XU CN216848191U (en) | 2022-01-17 | 2022-01-17 | Infrared light detection circuit and electronic equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216848191U true CN216848191U (en) | 2022-06-28 |
Family
ID=82083669
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220116624.XU Active CN216848191U (en) | 2022-01-17 | 2022-01-17 | Infrared light detection circuit and electronic equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216848191U (en) |
-
2022
- 2022-01-17 CN CN202220116624.XU patent/CN216848191U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6888454B2 (en) | Fault diagnosis circuit for LED indicating light | |
| WO2021057407A1 (en) | New energy vehicle charging protection device relay on-off detection system and method | |
| CN212905381U (en) | Live wire zero line ground wire of alternating-current charging stake connects wrong detection circuitry | |
| CN102213730B (en) | Low-voltage alarm circuit | |
| CN216848191U (en) | Infrared light detection circuit and electronic equipment | |
| CN108279361B (en) | Test method and test circuit for charging port of intelligent terminal | |
| CN106646189A (en) | Obstacle detection module | |
| CN103852735A (en) | Lamp fixture discharge timing circuit | |
| CN212275915U (en) | Power supply voltage detection device | |
| CN210691079U (en) | Bus short circuit detection protection circuit for two-wire system emergency lighting system | |
| CN111736088B (en) | Power state indicating circuit | |
| CN211236201U (en) | RS232 interface state detection circuit | |
| CN213181959U (en) | Alternating current power supply detection circuit | |
| CN210775763U (en) | Relay on-off detection system for new energy automobile charging protection device | |
| CN220085462U (en) | Alarm driving circuit for arc extinction | |
| CN214655819U (en) | Low standby power consumption device and low standby power consumption washing machine | |
| CN216820151U (en) | Color temperature switching circuit and driving power supply based on discrete component | |
| CN105187118B (en) | Terminal device and its hair optical detection circuit | |
| CN210295326U (en) | Control system for photoelectric sensor | |
| CN219369952U (en) | Detection circuit and power supply | |
| CN217689147U (en) | Overcurrent detection circuit with protection function | |
| CN214125266U (en) | Indicator lamp interface circuit | |
| CN212459992U (en) | Detection circuit and color sorter equipment | |
| CN209218059U (en) | A kind of optoelectronic switch | |
| CN217007727U (en) | Detection circuit and detection device of receiving device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |