CN210777110U - Multifunctional remote controller chip circuit and remote controller - Google Patents
Multifunctional remote controller chip circuit and remote controller Download PDFInfo
- Publication number
- CN210777110U CN210777110U CN201921847183.5U CN201921847183U CN210777110U CN 210777110 U CN210777110 U CN 210777110U CN 201921847183 U CN201921847183 U CN 201921847183U CN 210777110 U CN210777110 U CN 210777110U
- Authority
- CN
- China
- Prior art keywords
- unit
- interface
- triode
- central control
- key
- 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
- Selective Calling Equipment (AREA)
Abstract
A single-chip crystal oscillator is connected to a central control unit, an RF crystal oscillator is connected to the RF unit, an RF antenna interface used for being connected with an RF antenna is arranged on the RF unit, an infrared driving unit is connected with the central control unit, an infrared LED interface used for being connected with an infrared LED is arranged on the infrared driving unit, a key driving unit is connected with the central control unit, a key interface used for being connected with a keyboard is arranged on the key driving unit, a state switching unit is connected with the central control unit, a switching key interface is arranged on the state switching unit, a state indicating unit is connected with the central control unit, an indicating LED interface is arranged on the state indicating unit, a power input interface is arranged on the power supply unit and used for being connected with an external power supply. The utility model discloses infrared remote control and RF function module have been integrated inside the remote controller, and it can realize infrared remote control or RF remote control function.
Description
Technical Field
The utility model discloses a remote controller chip, especially a multi-functional remote controller chip circuit and remote controller.
Background
The remote controller is a wireless transmitting device, and codes the key information by modern digital coding technology and sends the key information to relevant equipment, and the equipment demodulates corresponding instructions after receiving the key information to achieve the purpose of controlling the relevant equipment to complete the required operation requirements.
The conventional remote controller mostly adopts an infrared technology, and a control signal is transmitted through infrared rays, so that a common remote controller peripheral circuit is complex, the volume of the remote controller is large, the function is single, the infrared remote controller needs to be aligned to a receiver when in use, the use distance is limited, and the use is inconvenient.
Disclosure of Invention
To the shortcoming of the remote controller function singleness among the above-mentioned prior art, that peripheral circuit is complicated, the utility model provides a multi-functional remote controller chip circuit and remote controller, it has integrateed infrared remote control and RF function module in remote controller inside, and it can realize infrared remote control or RF remote control function.
The utility model provides a technical scheme that its technical problem adopted is: a multifunctional remote controller chip circuit comprises a central control unit, an RF unit, an infrared drive unit, a key drive unit, a state switching unit, a state indication unit and a power supply unit, wherein the central control unit is connected with a singlechip crystal oscillator, the RF unit is connected with the central control unit, the RF unit is connected with the RF crystal oscillator, the RF unit is provided with an RF antenna interface for connecting an RF antenna, the infrared drive unit is connected with the central control unit, the infrared drive unit is provided with an infrared LED interface for connecting an infrared LED, the key drive unit is connected with the central control unit, the key drive unit is provided with a key interface for connecting a keyboard, the state switching unit is connected with the central control unit, the state switching unit is provided with a switching key interface, the state indication unit is connected with the central control unit, and the state indication unit is provided with an indication LED interface, the power supply unit is provided with a power supply input interface for connecting with an external power supply.
A remote controller comprises a remote controller chip, a battery, a key, an infrared LED, a state switching key, a state indicator lamp and an RF antenna, wherein the battery is connected to a power input interface of the remote controller chip, the key is connected to a key input interface of the remote controller chip, the infrared LED is connected to an infrared output interface, the state switching key is connected to the state switching interface, the state indicator lamp is connected to an indication LED interface, and the RF antenna is connected to an antenna interface of an RF unit.
The utility model provides a technical scheme that its technical problem adopted further still includes:
the key driving unit adopts 4 driving input lines and 8 driving output lines, and the 4 driving input lines are respectively connected with a positive power supply through pull-up resistors.
The data input and output interface of the RF unit is respectively connected with the central control unit, the channel selection interface of the RF unit is connected with the central control unit, the emission/reception control interface of the RF unit is connected with the central control unit, the power-saving mode interface of the RF unit is connected with the central control unit, and the RF unit is provided with an RF antenna interface for connecting an RF antenna.
The state indicating unit adopts two LED driving circuits, and comprises a first LED driving circuit and a second LED driving circuit, wherein the two LED driving circuits are respectively used for connecting an LED lamp, the first LED driving circuit comprises a triode Q4, a current-limiting resistor R16 and a current-limiting resistor R17, the base electrode of the triode Q4 is connected with a data pin of the MCU through the current-limiting resistor R16, the emitting electrode of the triode Q17 is grounded, the collector electrode of the triode Q4 is used as an output interface of the first LED driving circuit, and the current-limiting resistor R17 is connected in series between the collector electrode of the triode Q4 and the output interface of the first LED driving circuit; the second LED driving circuit comprises a triode Q5, a current-limiting resistor R18 and a current-limiting resistor R19, the base electrode of the triode Q5 is connected with a data pin of the MCU through the current-limiting resistor R18, the emitting electrode of the triode Q19 is grounded, the collector electrode of the triode Q5 is used as an output interface of the second LED driving circuit, and the current-limiting resistor R19 is connected in series between the collector electrode of the triode Q5 and the output interface of the second LED driving circuit.
The infrared driving unit comprises a triode Q1, a current-limiting resistor R5 and a current-limiting resistor R6, the base electrode of the triode Q1 is connected with a data pin of the MCU through the current-limiting resistor R5, the emitting electrode of the triode Q1 is grounded, the collector electrode of the triode Q1 is used as an infrared output interface of the infrared driving unit, and the current-limiting resistor R6 is connected between the collector electrode of the triode Q1 and the infrared output interface in series.
The central control unit is connected with a reset unit, the reset unit comprises a key reset unit and a watchdog unit, the key reset unit comprises a reset key interface and a resistor R11, the reset key interface and the resistor R11 are connected between a positive power supply and the ground in series, a capacitor C5 is connected with the reset key interface in parallel, the resistor R12 is connected with the resistor R11 in parallel, a capacitor C5 and a resistor R12 form a power-on reset unit for power-on reset, a VCC port of the watchdog unit is connected with the positive power supply, a GND port of the watchdog unit, an MR port and a WDO port of the watchdog unit are in short circuit, a RST end of the watchdog unit is connected with a RST port of the central control unit, a WDI port of the watchdog unit is connected with an I/O port of the central control unit, a WDI port of the watchdog unit is connected with a general I/O port of the central control unit, and a PFO port of the watchdog unit is connected with an external interrupt interface of the central control unit, the PFI port of the watchdog unit is connected with a voltage-dividing resistor network, the voltage-dividing resistor network comprises a resistor R13 and a resistor R14 which are connected between a positive power supply and the ground in series, and the PFI port of the watchdog unit is connected with the common end of the resistor R13 and the resistor R14.
The central control unit is connected with a buzzer driving unit, the buzzer driving unit comprises a triode Q3, a current-limiting resistor R9 and a current-limiting resistor R10, the base electrode of the triode Q3 is connected with a data pin of the MCU through the current-limiting resistor R9, the emitting electrode of the triode Q3 is grounded, the collector electrode of the triode Q3 is used as the buzzer output interface of the buzzer driving unit, and the current-limiting resistor R10 is connected between the collector electrode of the triode Q3 and the buzzer output interface in series.
The liquid crystal interface of the remote controller chip is connected with a liquid crystal screen, the LED output interface of the remote controller chip is connected with an LED for indication, and the buzzer output interface of the remote controller chip is connected with a buzzer.
The status indicator lamps comprise two status indicator lamps, the two status indicator lamps are respectively connected to one indication LED interface, and the status switching key adopts a contact key or a dial switch.
The utility model has the advantages that: the utility model discloses infrared remote control and RF function module have been integrated inside the remote controller, and it can realize infrared remote control or RF remote control function, and it can also embed wiFi function module, realizes networking function, and through RF mode remote control formula, transmission distance is far away, need not face the receiver and can realize the remote control.
The present invention will be further described with reference to the accompanying drawings and the detailed description.
Drawings
Fig. 1 is a block diagram of the circuit of the present invention.
Fig. 2 is a schematic circuit diagram of the main control part of the present invention.
Fig. 3 is a schematic diagram of the RF circuit of the present invention.
Fig. 4 is a schematic diagram of the interface part circuit according to the present invention.
Detailed Description
The embodiment is a preferred embodiment of the present invention, and other principles and basic structures are the same as or similar to those of the embodiment, and are within the protection scope of the present invention.
Referring to fig. 1 to 4, the present invention mainly includes a central control unit, an RF unit, an infrared driving unit, a key driving unit, a state switching unit, a state indicating unit and a power supply unit, the central control unit is connected with a single chip crystal oscillator, the RF unit is connected with the central control unit for data communication, the RF unit is connected with an RF crystal oscillator, the RF unit is provided with an RF antenna interface, the RF unit is connected with an RF antenna for outputting an RF remote control signal, the infrared driving unit is connected with the central control unit for receiving an infrared remote control signal output by the central control unit, the infrared driving unit is provided with an infrared LED interface, the infrared output interface is connected with an infrared LED for outputting an infrared remote control signal, the key driving unit is connected with the central control unit, the key driving unit is provided with a key interface, the utility model discloses a power input interface, the state switching unit is connected with central control unit, and the state indication unit is connected with central control unit, and the state switching unit is last to be provided with switches button interface, and the state indication unit is connected with central control unit, is provided with on the state indication unit and instructs the LED interface, is equipped with power input interface on the electrical unit for be connected with external power supply, external power supply passes through electrical unit and gives the utility model discloses the power supply.
In this embodiment, the central control unit is an MCU, and in this embodiment, a well-known 51-series MCU is taken as an example for description, and during specific implementation, an MCU with another structure may be used as the central control unit according to actual needs. The key drive unit adopts 4 the netted key layout mode of 8, 4 drive input lines promptly, 8 drive output lines, is connected with positive power supply through pull-up resistance on 4 drive input lines respectively, through the utility model discloses direct drive keyboard, drive output line are 4 the 8 network structure with the drive input line and distribute, and every node sets up a button.
In this embodiment, the RF unit is an RF chip of type nRF401, a data input/output interface of the RF unit is respectively connected to the central control unit for data communication, a channel selection interface of the RF unit is connected to the central control unit, the central control unit controls the RF unit to perform channel selection, a transmission/reception control interface of the RF unit is connected to the central control unit, the central control unit controls the RF unit to perform working mode configuration, a power-saving mode interface of the RF unit is connected to the central control unit, the central control unit controls the RF unit to perform power-saving working mode control, the RF unit is provided with an RF antenna interface, and an RF antenna is connected to the antenna interface of the RF unit for outputting an RF remote control signal, thereby implementing two remote control modes, namely infrared and RF.
In this embodiment, the state switching unit adopts a current limiting resistor R20, a switching key KC is connected to the current limiting resistor R20, and the switching key KC switches whether the remote controller works in the infrared mode or the RF mode. In this embodiment, the status indication unit adopts two LED driving circuits, including a first LED driving circuit and a second LED driving circuit, the two LED driving circuits are respectively used for connecting an LED lamp, the first LED driving circuit is connected with a green LED lamp (the color is suggested to set color, and other colors can be adopted in specific implementation), and is used for indicating that the utility model works in the infrared remote control mode, the second LED driving circuit is connected with a red LED lamp for indicating that the utility model works in the infrared remote control mode, in this embodiment, the first LED driving circuit includes a triode Q4, a current-limiting resistor R16 and a current-limiting resistor R17, the base of the triode Q4 is connected with a data pin of the MCU through the current-limiting resistor R16, the emitter of the triode Q17 is grounded, the collector of the triode Q4 is used as the output interface of the first LED driving circuit and is used for being connected with the green LED lamp, a current-limiting resistor R17 is connected in series between the collector of the triode Q4 and the output interface of the first LED drive circuit; the second LED driving circuit comprises a triode Q5, a current-limiting resistor R18 and a current-limiting resistor R19, the base electrode of the triode Q5 is connected with a data pin of the MCU through the current-limiting resistor R18, the emitting electrode of the triode Q19 is grounded, the collector electrode of the triode Q5 is used as the output interface of the second LED driving circuit and is used for being connected with the red LED lamp, and the current-limiting resistor R19 is connected between the collector electrode of the triode Q5 and the output interface of the second LED driving circuit in series.
In this embodiment, the infrared driving unit includes a transistor Q1, a current limiting resistor R5, and a current limiting resistor R6, a base of the transistor Q1 is connected to a data pin of the MCU through the current limiting resistor R5, an emitter of the transistor Q1 is grounded, a collector of the transistor Q1 is used as an infrared output interface of the infrared driving unit, and is connected to the infrared LED, and the current limiting resistor R6 is connected in series between the collector of the transistor Q1 and the infrared output interface.
In this embodiment, the central control unit is connected with a reset unit, the reset unit includes a key reset unit and a watchdog unit, in this embodiment, the key reset unit includes a reset key interface and a resistor R11, the reset key interface and the resistor R11 are connected in series between the positive power supply and the ground, a capacitor C5 is connected in parallel with the reset key interface, a resistor R12 is connected in parallel with the resistor R11, and the capacitor C5 and the resistor R12 form a power-on reset unit to perform power-on reset. In this embodiment, the watchdog unit is equivalent to a watchdog chip with a model MAX813L, and in a specific implementation, the watchdog unit may also be equivalent to other models of watchdog chips, a VCC port of the watchdog chip is connected to the positive power supply, a GND port of the watchdog chip is connected to a GND port, an MR port and a WDO port of the watchdog chip are shorted, a RST end of the watchdog chip is connected to a RST port of the central control unit, a WDI port of the watchdog chip is connected to an I/O port of the central control unit, in this embodiment, a WDI port of the watchdog chip is connected to a P2.4 port of the central control unit, a PFO port of the watchdog chip is connected to an external interrupt interface of the central control unit, in this embodiment, a PFO port of the watchdog chip is connected to an INT0 port of the central control unit, a PFI port of the watchdog chip is connected to a divider resistor network, and the divider resistor network includes a resistor R13 and a resistor R14 connected in series between the positive power supply and ground, the PFI port of the watchdog chip is connected to the common terminal of resistor R13 and resistor R14.
In this embodiment, the power supply unit employs a filter capacitor C5, and the filter capacitor C5 is connected between the positive power supply and the ground to filter spikes and the like of the input power supply.
In this embodiment, the central control unit is connected with a liquid crystal driving module, the liquid crystal driving module is equivalent to a liquid crystal driving chip with a 12864S model, and during specific implementation, the liquid crystal driving module can also be equivalent to liquid crystal driving chips with other models, and the liquid crystal driving module is provided with a liquid crystal interface for being connected with an external liquid crystal screen.
In this embodiment, the central control unit is connected to a display driving unit, the display driving unit includes a transistor Q2, a current limiting resistor R7, and a current limiting resistor R8, a base of the transistor Q2 is connected to a data pin of the MCU through the current limiting resistor R7, an emitter of the transistor Q2 is grounded, a collector of the transistor Q2 is used as an LED output interface of the display driving unit and is connected to the indication LED, and a collector of the transistor Q2 is connected to the LED output interface in series through the current limiting resistor R8.
In this embodiment, the central control unit is connected with a buzzer driving unit, the buzzer driving unit includes a triode Q3, a current limiting resistor R9 and a current limiting resistor R10, the base of the triode Q3 is connected with a data pin of the MCU through the current limiting resistor R9, the emitter of the triode Q3 is grounded, the collector of the triode Q3 is used as the buzzer output interface of the buzzer driving unit, and is used for being connected with an external buzzer, and the current limiting resistor R10 is connected in series between the collector of the triode Q3 and the buzzer output interface.
In the above-mentioned embodiment, it is right to use 51 series singlechips as an example the utility model discloses the circuit explains, during concrete implementation, central processing module also can be equivalent to such as RTL8188 the singlechip that has the wiFi function, perhaps on central control module, connects the wiFi module, and it can make the remote controller have wireless networking function, networking terminal such as accessible cell-phone, computer
The utility model discloses protect a remote controller simultaneously, the remote controller includes above-mentioned air conditioner remote controller chip, a battery, the button, infrared LED, the state switches the button, status indicator lamp and RF antenna, the battery is connected on the power input interface of remote controller chip, the keying is connected on the key input interface of remote controller chip, infrared LED connects on infrared output interface, the state switches the keying connection on the state switches the interface, status indicator lamp connects on instructing the LED interface, RF antenna connection is on the antenna interface of RF unit.
In this embodiment, a liquid crystal screen is connected to a liquid crystal interface of the remote controller chip, an LED output interface of the remote controller chip is connected to an LED for indication, and a buzzer is connected to a buzzer output interface of the remote controller chip.
When the WiFi function is provided, a WiFi antenna is connected to the WiFi antenna interface.
In this embodiment, the status indicator lamps include two, and two status indicator lamps are connected respectively on an instruction LED interface.
In this embodiment, the state switching key may be a contact key or a dial switch, and is configured to input a working mode selection signal to the central control unit, and the central control unit controls the working state of the remote controller according to the state of the state switching key.
The utility model discloses infrared remote control and RF function module have been integrated inside the remote controller, and it can realize infrared remote control or RF remote control function, and it can also embed wiFi function module, realizes networking function, and through RF mode remote control formula, transmission distance is far away, need not face the receiver and can realize the remote control.
Claims (10)
1. A multifunctional remote controller chip circuit is characterized in that: the chip circuit comprises a central control unit, an RF unit, an infrared drive unit, a key drive unit, a state switching unit, a state indication unit and a power supply unit, wherein the central control unit is connected with a single-chip microcomputer crystal oscillator, the RF unit is connected with the central control unit, the RF unit is connected with the RF crystal oscillator, the RF unit is provided with an RF antenna interface for connecting an RF antenna, the infrared drive unit is connected with the central control unit, the infrared drive unit is provided with an infrared LED interface for connecting an infrared LED, the key drive unit is connected with the central control unit, the key drive unit is provided with a key interface for connecting a keyboard, the state switching unit is connected with the central control unit, the state switching unit is provided with a switching key interface, the state indication unit is connected with the central control unit, the state indication unit is provided with an indication LED interface, the power supply unit is provided with a power supply input interface for connecting with an external power supply.
2. The multi-function remote control chip circuit of claim 1, wherein: the key driving unit adopts 4 driving input lines and 8 driving output lines, and the 4 driving input lines are respectively connected with a positive power supply through pull-up resistors.
3. The multi-function remote control chip circuit of claim 1, wherein: the data input and output interface of the RF unit is respectively connected with the central control unit, the channel selection interface of the RF unit is connected with the central control unit, the emission/reception control interface of the RF unit is connected with the central control unit, the power-saving mode interface of the RF unit is connected with the central control unit, and the RF unit is provided with an RF antenna interface for connecting an RF antenna.
4. The multi-function remote control chip circuit of claim 1, wherein: the state indicating unit adopts two LED driving circuits, and comprises a first LED driving circuit and a second LED driving circuit, wherein the two LED driving circuits are respectively used for connecting an LED lamp, the first LED driving circuit comprises a triode Q4, a current-limiting resistor R16 and a current-limiting resistor R17, the base electrode of the triode Q4 is connected with a data pin of the MCU through the current-limiting resistor R16, the emitting electrode of the triode Q17 is grounded, the collector electrode of the triode Q4 is used as an output interface of the first LED driving circuit, and the current-limiting resistor R17 is connected in series between the collector electrode of the triode Q4 and the output interface of the first LED driving circuit; the second LED driving circuit comprises a triode Q5, a current-limiting resistor R18 and a current-limiting resistor R19, the base electrode of the triode Q5 is connected with a data pin of the MCU through the current-limiting resistor R18, the emitting electrode of the triode Q19 is grounded, the collector electrode of the triode Q5 is used as an output interface of the second LED driving circuit, and the current-limiting resistor R19 is connected in series between the collector electrode of the triode Q5 and the output interface of the second LED driving circuit.
5. The multi-function remote control chip circuit of claim 1, wherein: the infrared driving unit comprises a triode Q1, a current-limiting resistor R5 and a current-limiting resistor R6, the base electrode of the triode Q1 is connected with a data pin of the MCU through the current-limiting resistor R5, the emitting electrode of the triode Q1 is grounded, the collector electrode of the triode Q1 is used as an infrared output interface of the infrared driving unit, and the current-limiting resistor R6 is connected between the collector electrode of the triode Q1 and the infrared output interface in series.
6. The multi-function remote control chip circuit of claim 1, wherein: the central control unit is connected with a reset unit, the reset unit comprises a key reset unit and a watchdog unit, the key reset unit comprises a reset key interface and a resistor R11, the reset key interface and the resistor R11 are connected between a positive power supply and the ground in series, a capacitor C5 is connected with the reset key interface in parallel, a resistor R12 is connected with the resistor R11 in parallel, a capacitor C5 and a resistor R12 form a power-on reset unit for power-on reset, a VCC port of the watchdog unit is connected with the positive power supply, a GND port of the watchdog unit, an MR port and a WDO port of the watchdog unit are in short circuit, a RST end of the watchdog unit is connected with a RST port of the central control unit, a WDI port of the watchdog unit is connected with an I/O port of the central control unit, a WDI port of the watchdog unit is connected with a general I/O port of the central control unit, and a PFO port of the watchdog unit is connected with an external interrupt interface of the central control unit, the PFI port of the watchdog unit is connected with a voltage-dividing resistor network, the voltage-dividing resistor network comprises a resistor R13 and a resistor R14 which are connected between a positive power supply and the ground in series, and the PFI port of the watchdog unit is connected with the common end of the resistor R13 and the resistor R14.
7. The multi-function remote control chip circuit of claim 1, wherein: the central control unit is connected with a buzzer driving unit, the buzzer driving unit comprises a triode Q3, a current-limiting resistor R9 and a current-limiting resistor R10, the base electrode of the triode Q3 is connected with a data pin of the MCU through the current-limiting resistor R9, the emitting electrode of the triode Q3 is grounded, the collector electrode of the triode Q3 is used as the buzzer output interface of the buzzer driving unit, and the current-limiting resistor R10 is connected between the collector electrode of the triode Q3 and the buzzer output interface in series.
8. A remote controller is characterized in that: the remote controller comprises a remote controller chip as claimed in any one of claims 1 to 7, a battery, a key, an infrared LED, a state switching key, a state indicator lamp and an RF antenna, wherein the battery is connected to a power input interface of the remote controller chip, the key is connected to a key input interface of the remote controller chip, the infrared LED is connected to an infrared output interface, the state switching key is connected to the state switching interface, the state indicator lamp is connected to an indicating LED interface, and the RF antenna is connected to an antenna interface of the RF unit.
9. The remote control of claim 8, wherein: the liquid crystal interface of the remote controller chip is connected with a liquid crystal screen, the LED output interface of the remote controller chip is connected with an LED for indication, and the buzzer output interface of the remote controller chip is connected with a buzzer.
10. The remote control of claim 8, wherein: the status indicator lamps comprise two status indicator lamps, the two status indicator lamps are respectively connected to one indication LED interface, and the status switching key adopts a contact key or a dial switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921847183.5U CN210777110U (en) | 2019-10-30 | 2019-10-30 | Multifunctional remote controller chip circuit and remote controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921847183.5U CN210777110U (en) | 2019-10-30 | 2019-10-30 | Multifunctional remote controller chip circuit and remote controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210777110U true CN210777110U (en) | 2020-06-16 |
Family
ID=71043914
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921847183.5U Active CN210777110U (en) | 2019-10-30 | 2019-10-30 | Multifunctional remote controller chip circuit and remote controller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210777110U (en) |
-
2019
- 2019-10-30 CN CN201921847183.5U patent/CN210777110U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204597168U (en) | There is the multifunction wireless socket of function of measuring | |
| US20110291671A1 (en) | Bidirectional wireless electrical energy monitoring system | |
| CN210777110U (en) | Multifunctional remote controller chip circuit and remote controller | |
| CN107144750A (en) | A kind of low-voltage platform area down Monitor Unit device and alarm method | |
| CN201638358U (en) | Intelligent radio-frequency wireless anti-lost device | |
| CN210772670U (en) | Air conditioner remote controller chip circuit and remote controller | |
| CN109920226A (en) | A kind of kilowatt meter recorder based on low-power consumption bluetooth and near infrared technology | |
| CN210428810U (en) | Remote controller chip circuit with key reset circuit and remote controller | |
| CN211702477U (en) | Wireless weak current dry contact adapter | |
| CN203883814U (en) | Key detection circuit and electronic device | |
| CN204390954U (en) | Vehicle-mounted button indicating circuit and vehicle intelligent terminal | |
| CN210777124U (en) | Remote controller chip circuit with internal boosting function and remote controller | |
| CN210781148U (en) | Television remote controller chip circuit with illumination drive and remote controller | |
| CN210428809U (en) | Remote controller chip circuit with temperature detection function and remote controller | |
| CN212965799U (en) | Network switching device special for machine room | |
| CN207460126U (en) | A kind of switching circuit carried out through same interface signal input and output | |
| CN201282511Y (en) | Monitoring camera capable of remote control setting parameter | |
| CN211881694U (en) | Remote control dog training device transmitting system | |
| CN219960578U (en) | Single-wire communication circuit | |
| CN203838746U (en) | Meal preparation counting device | |
| CN217240685U (en) | Microswitch key and remote control receiving multiplexing circuit, circuit board and electrical equipment | |
| CN205375820U (en) | Remote control circuit | |
| CN207442814U (en) | ON-OFF control circuit | |
| CN209357225U (en) | A kind of kilowatt meter recorder based on low-power consumption bluetooth and near infrared technology | |
| CN211378019U (en) | 2.4G radio frequency receiving and transmitting circuit device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |