CN219916478U - Anti-interference remote controller - Google Patents
Anti-interference remote controller Download PDFInfo
- Publication number
- CN219916478U CN219916478U CN202223543882.5U CN202223543882U CN219916478U CN 219916478 U CN219916478 U CN 219916478U CN 202223543882 U CN202223543882 U CN 202223543882U CN 219916478 U CN219916478 U CN 219916478U
- Authority
- CN
- China
- Prior art keywords
- module
- remote control
- capacitor
- resistor
- interference
- 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
- 238000002955 isolation Methods 0.000 claims abstract description 18
- 239000003990 capacitor Substances 0.000 claims description 52
- 230000005540 biological transmission Effects 0.000 abstract description 3
- 230000001276 controlling effect Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 102100039435 C-X-C motif chemokine 17 Human genes 0.000 description 2
- 101000889048 Homo sapiens C-X-C motif chemokine 17 Proteins 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000008054 signal transmission Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Landscapes
- Selective Calling Equipment (AREA)
Abstract
The utility model discloses an anti-interference remote controller, which relates to the technical field of remote controllers and comprises a remote control transmitting module, a remote control receiving module and a remote control receiving module, wherein the remote control transmitting module is used for transmitting coded infrared signals; the remote control receiving module is used for receiving the infrared signals; the anti-interference adjusting module is used for carrying out re-matching control and adjusting the working frequency through the tuning circuit; the decoding processing module is used for decoding the multiple-input signals and outputting the signals; and the isolation control module is used for controlling the transmission of electric energy by the isolation control switch control module. The anti-interference remote controller of the utility model receives the infrared signal emitted by the remote control emitting module by the remote control receiving module, carries out re-matching control and working frequency adjustment on the received infrared signal by the tuning circuit, improves the accuracy of signal receiving, decodes by a special decoding mode and eliminates instant strong battery interference, and if the interference signal is stronger, directly controls the decoding processing module to reset, so that the decoding processing module reenters the working state.
Description
Technical Field
The utility model relates to the technical field of remote controllers, in particular to an anti-interference remote controller.
Background
Along with the development of modernization, the quality of life level of people is improved, various electric equipment goes into the life of people, wherein most electric equipment is controlled by different remote controllers, people can conveniently control the required electric equipment remotely, the existing remote controllers mostly directly adopt the mode of an infrared receiver and an infrared transmitter, and encode and decode infrared signals so as to complete the control of formulated electric equipment, and in order to avoid the interference of external factors such as electromagnetic fields, the remote controllers only complete the filtering of interference signals through related filter circuits, the anti-interference capability is lower, the required working frequency cannot be regulated safely and reliably, and then the signal transmission error is large, so that improvement is needed.
Disclosure of Invention
The embodiment of the utility model provides an anti-interference remote controller to solve the problems in the background technology.
According to an embodiment of the present utility model, there is provided an anti-interference remote controller including: the device comprises a power supply module, a remote control transmitting module, a remote control receiving module, an anti-interference adjusting module, a decoding processing module, an isolation control module and a switch control module;
the power supply module is used for providing required direct-current electric energy;
the remote control transmitting module is connected with the power supply module and is used for receiving the electric energy output by the power supply module and transmitting an encoded infrared signal through a remote control transmitting circuit;
the remote control receiving module is connected with the power supply module and the remote control transmitting module and is used for wirelessly receiving the infrared signals sent by the remote control transmitting module;
the anti-interference adjusting module is connected with the remote control receiving module and used for carrying out re-matching control on the infrared signals received by the remote control receiving module through the tuning circuit, and adjusting and outputting the working frequency of the input infrared signals;
the decoding processing module is connected with the anti-interference adjusting module and is used for decoding the signals output by the anti-interference adjusting module through the decoding processing circuit and outputting a first control signal and a second control signal, and the decoding processing module is used for controlling the work of electric equipment through the first control signal;
the isolation control module is connected with the decoding processing module and the switch control module and used for isolating and transmitting the second control signal to the switch control module;
the switch control module is connected with the power supply module and the decoding processing module, and is used for receiving the signals transmitted by the isolation control module and controlling the connection between the power supply module and the decoding processing module, and is used for resetting the decoding processing module.
Compared with the prior art, the utility model has the beneficial effects that: the anti-interference remote controller of the utility model receives the infrared signal emitted by the remote control emitting module by the remote control receiving module, the anti-interference adjusting module carries out re-matching control and working frequency adjusting control on the infrared signal received by the remote control receiving module by the tuning circuit, reduces the interference of the outside on the input signal, improves the accuracy of signal receiving, carries out decoding processing by the decoding processing module, eliminates instant strong battery interference by a special decoding mode, and if the decoding processing module still receives stronger interference signal interference, the switching-off of the switch control module is controlled directly by the isolation control module, then the reset work of the decoding processing module is controlled, so that the decoding processing module enters the working state again, improves the safety of the remote controller, has higher anti-interference capability, can safely and reliably adjust the required working frequency, and improves the accuracy of the received signal.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the description of the embodiments of the present utility model will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic block diagram of an anti-interference remote controller according to an embodiment of the present utility model.
Fig. 2 is a circuit diagram of an anti-interference remote controller provided by the embodiment of the utility model.
Fig. 3 is a circuit diagram of a connection of a remote control transmitting module according to an embodiment of the present utility model.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Embodiment 1 referring to fig. 1, an anti-interference remote controller includes: the device comprises a power supply module 1, a remote control transmitting module 2, a remote control receiving module 3, an anti-interference adjusting module 4, a decoding processing module 5, an isolation control module 6 and a switch control module 7;
specifically, the power module 1 is configured to provide a required dc power;
the remote control transmitting module 2 is connected with the power supply module 1 and is used for receiving the electric energy output by the power supply module 1 and transmitting an encoded infrared signal through a remote control transmitting circuit;
the remote control receiving module 3 is connected with the power supply module 1 and the remote control transmitting module 2 and is used for wirelessly receiving infrared signals sent by the remote control transmitting module;
the anti-interference adjusting module 4 is connected with the remote control receiving module 3 and is used for carrying out re-matching control on the infrared signals received by the remote control receiving module 3 through a tuning circuit and adjusting and outputting the working frequency of the input infrared signals;
the decoding processing module 5 is connected with the anti-interference adjusting module 4 and is used for decoding the signal output by the anti-interference adjusting module 4 through a decoding processing circuit and outputting a first control signal and a second control signal, and the decoding processing module is used for controlling the work of electric equipment through the first control signal;
the isolation control module 6 is connected with the decoding processing module 5 and the switch control module 7 and is used for transmitting the second control signal to the switch control module 7 in an isolated manner;
the switch control module 7 is connected with the power module 1 and the decoding processing module 5, and is used for receiving the signal transmitted by the isolation control module 6 and controlling the connection between the power module 1 and the decoding processing module 5, and is used for resetting the decoding processing module 5.
In a specific embodiment, the power module 1 may use two sets of dc power circuits to provide dc power for the module, which is not described herein; the remote control transmitting module 2 can adopt a remote control transmitting circuit; the remote control receiving module 3 can adopt an infrared receiving circuit and is used for wirelessly receiving the infrared signal sent by the remote control sending module; the anti-interference adjusting module 4 can adopt a tuning circuit, and through adjusting and controlling the capacitor array and the adjusting inductor, the re-matching control of signals is realized, the working frequency of the input infrared signals is adjusted, and the anti-interference capability of the input infrared signals is improved; the decoding processing module 5 can adopt a decoding processing circuit to decode the signal output by the anti-interference adjusting module 4 and control the work of the needed electric equipment; the isolation control module 6 can adopt an optical coupling isolation transmission circuit to perform signal transmission; the switch control module 7 can adopt a power tube switch circuit to control the connection between the power module 1 and the decoding processing module 5, so as to realize the reset control of the decoding processing module 5.
Embodiment 2, please refer to fig. 2 and 3 based on embodiment 1, wherein the power module 1 includes a first dc power source; the remote control transmitting module 2 comprises a first coding switch, a fourth key switch S4, a remote control transmitter U2, a tenth resistor R10, a seventh capacitor C7, a ninth resistor R9 and an infrared transmitting head;
specifically, the first direct current power supply is connected to the first end of the first coding switch, the sixteenth end of the remote control transmitter U2 and the first end of the infrared transmitting head, the first end to the tenth end of the first coding switch are respectively connected to the first end to the tenth end of the remote control transmitter U2, the fifteenth end of the remote control transmitter U2 is connected to the second end of the infrared transmitting head, the thirteenth end of the remote control transmitter U2 is connected to one end of the seventh capacitor C7 and one end of the ninth resistor R9 through the tenth resistor R10, the other end of the seventh capacitor C7 and the other end of the ninth resistor R9 are respectively connected to the twelfth end and the tenth end of the remote control transmitter U2, and the fourteenth end of the remote control transmitter U2 is connected to the eighth end and the ground end of the remote control transmitter U2 through the fourth key switch S4.
In a specific embodiment, the remote control transmitter U2 is optionally, but not limited to, an MC145026 remote control encoding integrated chip, so as to implement encoding processing and transmitting of the infrared signal.
Further, the power module 1 further includes a second dc power supply and an eighth capacitor C8; the remote control receiving module 3 comprises an infrared receiving head; the anti-interference adjusting module 4 comprises a first resistor R1, a first capacitor C1, a first inductor L1, a first key switch S1, a second key switch S2, a third key switch S3, a second capacitor C2, a third capacitor C3 and a third inductor L3;
specifically, the second dc power supply is connected to the first end of the infrared receiving head and the first end of the eighth capacitor C8, the second end of the eighth capacitor C8 and the third end of the infrared receiving head are grounded, the second end of the infrared receiving head sequentially passes through the first resistor R1 and the first capacitor C1 to be connected to the first end of the first inductor L1, the second end of the first inductor L1 is connected to one end of the third key switch S3 and to the other end of the third key switch S3, one end of the third capacitor C3 and one end of the second key switch S2, and the other end of the second key switch S2 is connected to the other end of the third capacitor C3 and one end of the first key switch S1 and to the other end of the first key switch S1 and to the ground through the second capacitor C2.
Further, the anti-interference adjusting module 4 further includes a second inductor L2, a fourth capacitor C4, a second resistor R2, and a third resistor R3;
specifically, the second inductor L2 is coupled to the third inductor L3, the first end of the second inductor L2 is connected to the first end of the second resistor R2 through the fourth capacitor C4, and the second end of the second inductor L2 is connected to the second end of the second resistor R2 through the third resistor R3.
In a specific embodiment, the first key switch S1 controls the access of the second capacitor C2, the second key switch S2 controls the access of the third capacitor C3, and the first key switch S1, the second capacitor C2, the second key switch S2 and the third capacitor C3 form a tuning capacitor array, so as to adjust the working frequency of the output infrared signal; the third inductor L3 is a tuning inductor, and is controlled by the third key switch S3, and is matched with the second capacitor C2 and the third capacitor C3 to achieve the effect of re-matching the input infrared signal.
Further, the decoding processing module 5 includes a fourth resistor R4, a fifth capacitor C5, a first decoder U1, a second coding switch, a sixth resistor R6, a sixth capacitor C6, and an output port;
specifically, the sixteenth end of the first decoder U1 and the sixth end of the second coding switch are both connected to the switch control module 7, the sixth end of the first decoder U1 is connected to the seventh end of the first decoder U1 and one end of the fifth capacitor C5 through the fourth resistor R4, the other end of the fifth capacitor C5 is grounded, the first end to the fifth end of the first decoder U1 are respectively connected to the first end to the fifth end of the second coding switch, the seventh end of the first coding switch is grounded, the thirteenth end of the first decoder U1 is connected to the output port, the twelfth end of the first decoder U1 is connected to the isolation control module 6, and the tenth end of the first decoder U1 is connected to one end of the sixth capacitor C6 and is connected to the other end of the sixth capacitor C6, the eighth end of the first decoder U1 and the ground through the sixth resistor R6.
In a specific embodiment, the first decoder U1 may be, but is not limited to, an MC145027 remote control decoding integrated chip, so as to decode an infrared signal and control electric equipment.
Further, the isolation control module 6 includes a seventh resistor R7, a first optocoupler J1, a first power VCC1, and an eighth resistor R8;
specifically, the first end of the first optocoupler J1 is connected to the twelfth end of the first decoder U1 through a seventh resistor R7, the second end of the first optocoupler J1 is grounded, the fourth end of the first optocoupler J1 is connected to the ground through an eighth resistor R8, and the third end of the first optocoupler J1 is connected to the first power supply VCC1.
In a specific embodiment, the first optocoupler J1 may be a PC817 optocoupler, so as to isolate the transmission signal.
Further, the switch control module 7 includes a fifth resistor R5, a first power tube Q1 and a first switch tube VT1;
specifically, one end of the fifth resistor R5 and the drain electrode of the first power tube Q1 are both connected to the first end of the eighth capacitor C8, the gate electrode of the first power tube Q1 is connected to the other end of the fifth resistor R5 and the collector electrode of the first switch tube VT1, the source electrode of the first power tube Q1 is connected to the sixteenth end of the first decoder U1 and the sixth end of the second coding switch, the emitter electrode of the first switch tube VT1 is grounded, and the base electrode of the first switch tube VT1 is connected to the fourth end of the first optocoupler J1.
In a specific embodiment, the first switching tube VT1 may be an NPN transistor, which is controlled by the first optocoupler J1; the first power tube Q1 may be an N-channel enhancement MOS tube, and the working state of the first switch tube VT1 is controlled.
The utility model relates to an anti-interference remote controller, which is characterized in that an infrared signal is sent by a remote control transmitter U2 in a remote control transmitting module 2 and amplified by an infrared transmitting head, the infrared signal is received by an infrared receiving head in a remote control receiving module 3, in order to avoid external interference, the regulation processing of the infrared signal is finished by pressing a first key switch S1, a second key switch S2 or a third key switch S3, so that the input infrared signal is subjected to re-matching control, the infrared signal input into a first decoder U1 is enabled to be accurate, then the first decoder U1 carries out decoding processing on the input infrared signal, wherein the first decoder U1 eliminates instant strong battery interference through a special decoding mode, so that the output end of the first decoder U1 outputs a control signal to control the work of electric equipment, and when the external interference is strong, in order to avoid signal processing errors, the reset infrared signal sent out by the remote control transmitting module 2 is enabled to be output by a twelfth end of the first decoder U1, the control signal is transmitted through a first optical coupler J1 and controls the first switch VT1 to be conducted, the first decoder U1 is controlled to be turned on, and the first decoder U1 is controlled to stop the first decoder U1, and the first power transistor VT1 is turned on and turned off.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (7)
1. An anti-interference remote controller is characterized in that,
the anti-interference remote controller comprises: the device comprises a power supply module, a remote control transmitting module, a remote control receiving module, an anti-interference adjusting module, a decoding processing module, an isolation control module and a switch control module;
the power supply module is used for providing required direct-current electric energy;
the remote control transmitting module is connected with the power supply module and is used for receiving the electric energy output by the power supply module and transmitting an encoded infrared signal through a remote control transmitting circuit;
the remote control receiving module is connected with the power supply module and the remote control transmitting module and is used for wirelessly receiving the infrared signals sent by the remote control transmitting module;
the anti-interference adjusting module is connected with the remote control receiving module and used for carrying out re-matching control on the infrared signals received by the remote control receiving module through the tuning circuit, and adjusting and outputting the working frequency of the input infrared signals;
the decoding processing module is connected with the anti-interference adjusting module and is used for decoding the signals output by the anti-interference adjusting module through the decoding processing circuit and outputting a first control signal and a second control signal, and the decoding processing module is used for controlling the work of electric equipment through the first control signal;
the isolation control module is connected with the decoding processing module and the switch control module and used for isolating and transmitting the second control signal to the switch control module;
the switch control module is connected with the power supply module and the decoding processing module, and is used for receiving the signals transmitted by the isolation control module and controlling the connection between the power supply module and the decoding processing module, and is used for resetting the decoding processing module.
2. The anti-interference remote control of claim 1, wherein said power module comprises a first dc power source; the remote control transmitting module comprises a first coding switch, a fourth key switch, a remote control transmitter, a tenth resistor, a seventh capacitor, a ninth resistor and an infrared transmitting head;
the first direct current power supply is connected with a first end of a first coding switch, a sixteenth end of a remote control transmitter and a first end of an infrared transmitting head, the first end to the tenth end of the first coding switch are respectively connected with the first end to the tenth end of the remote control transmitter, the fifteenth end of the remote control transmitter is connected with a second end of the infrared transmitting head, the thirteenth end of the remote control transmitter is connected with one end of a seventh capacitor and one end of a ninth resistor through a tenth resistor, the other end of the seventh capacitor and the other end of the ninth resistor are respectively connected with the twelfth end and the tenth end of the remote control transmitter, and the fourteenth end of the remote control transmitter is connected with the eighth end and the ground end of the remote control transmitter through a fourth key switch.
3. The anti-interference remote control of claim 1, wherein said power module further comprises a second dc power source and an eighth capacitor; the remote control receiving module comprises an infrared receiving head; the anti-interference adjusting module comprises a first resistor, a first capacitor, a first inductor, a first key switch, a second key switch, a third key switch, a second capacitor, a third capacitor and a third inductor;
the second direct current power supply is connected with the first end of the infrared receiving head and the first end of the eighth capacitor, the second end of the eighth capacitor and the third end of the infrared receiving head are grounded, the second end of the infrared receiving head is sequentially connected with the first end of the first inductor through the first resistor and the first capacitor, the second end of the first inductor is connected with one end of the third key switch and is connected with the other end of the third key switch, one end of the third capacitor and one end of the second key switch through the third inductor, and the other end of the second key switch is connected with the other end of the third capacitor and one end of the first key switch and is connected with the other end of the first key switch and the ground through the second capacitor.
4. The anti-interference remote control according to claim 3, wherein the anti-interference adjusting module further comprises a second inductor, a fourth capacitor, a second resistor and a third resistor;
the second inductor is coupled with the third inductor, the first end of the second inductor is connected with the first end of the second resistor through the fourth capacitor, and the second end of the second inductor is connected with the second end of the second resistor through the third resistor.
5. The anti-interference remote controller according to claim 4, wherein the decoding processing module comprises a fourth resistor, a fifth capacitor, a first decoder, a second encoding switch, a sixth resistor, a sixth capacitor, and an output port;
the sixteenth end of the first decoder and the sixth end of the second coding switch are both connected with the switch control module, the sixth end of the first decoder is connected with the seventh end of the first decoder and one end of the fifth capacitor through a fourth resistor, the other end of the fifth capacitor is grounded, the first end to the fifth end of the first decoder are respectively connected with the first end to the fifth end of the second coding switch, the seventh end of the first coding switch is grounded, the thirteenth end of the first decoder is connected with the output port, the twelfth end of the first decoder is connected with the isolation control module, and the tenth end of the first decoder is connected with one end of the sixth capacitor and is connected with the other end of the sixth capacitor, the eighth end of the first decoder and the ground through the sixth resistor.
6. The anti-interference remote control according to claim 5, wherein the isolation control module comprises a seventh resistor, a first optocoupler, a first power supply, and an eighth resistor;
the first end of the first optocoupler is connected with the twelfth end of the first decoder through a seventh resistor, the second end of the first optocoupler is grounded, the fourth end of the first optocoupler is connected with the ground through an eighth resistor, and the third end of the first optocoupler is connected with a first power supply.
7. The anti-interference remote control of claim 6, wherein the switch control module comprises a fifth resistor, a first power tube and a first switching tube;
one end of the fifth resistor and the drain electrode of the first power tube are both connected with the first end of the eighth capacitor, the grid electrode of the first power tube is connected with the other end of the fifth resistor and the collector electrode of the first switch tube, the source electrode of the first power tube is connected with the sixteenth end of the first decoder and the sixth end of the second coding switch, the emitter electrode of the first switch tube is grounded, and the base electrode of the first switch tube is connected with the fourth end of the first optocoupler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223543882.5U CN219916478U (en) | 2022-12-27 | 2022-12-27 | Anti-interference remote controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223543882.5U CN219916478U (en) | 2022-12-27 | 2022-12-27 | Anti-interference remote controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219916478U true CN219916478U (en) | 2023-10-27 |
Family
ID=88423961
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223543882.5U Active CN219916478U (en) | 2022-12-27 | 2022-12-27 | Anti-interference remote controller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219916478U (en) |
-
2022
- 2022-12-27 CN CN202223543882.5U patent/CN219916478U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN219916478U (en) | Anti-interference remote controller | |
| CN101833835A (en) | Micro-power remote control doorbell | |
| CN201946070U (en) | Doorbell | |
| CN209962405U (en) | Wireless remote control transmitter, receiver and wireless remote control system | |
| CN201796440U (en) | Micro-power-consumption remote control doorbell | |
| CN203859333U (en) | Intelligent television set socket device | |
| CN202135150U (en) | Bus-type electric current loop communication circuit | |
| CN204117352U (en) | A kind of intelligent wireless telechiric device | |
| CN205091909U (en) | Take electric power automatic switch remote controller of IP address safety lock | |
| CN201397980Y (en) | Radio remote control power supply socket | |
| CN202976438U (en) | Wireless signal transponder based on intelligent home control | |
| CN103150883B (en) | Self-adaptive radio frequency (RF) matching remote controller | |
| CN206835063U (en) | A kind of radio remote control switch | |
| CN219916477U (en) | Wireless remote control receiver | |
| CN106208719A (en) | A kind of feedback circuit of isolating switch power | |
| CN202615156U (en) | Wireless remote control switch device | |
| CN204906358U (en) | strong and weak electric isolation device and electric appliance | |
| CN109213039A (en) | A kind of remote control Tesla coil | |
| CN204087481U (en) | A kind of telepilot | |
| CN203659187U (en) | Remote control emitter applied to illuminating system | |
| CN202854514U (en) | Capacitance buck type remote control system | |
| CN219162823U (en) | Bluetooth changes infrared circuit | |
| CN211403583U (en) | Wireless remote control circuit | |
| CN210640886U (en) | Communication circuit of infrared inductor faucet | |
| CN210327612U (en) | CAN communication circuit based on LoRa wireless module |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |