TWI417760B - Remote controller and electric charge reminding system - Google Patents

Description

Remote control and power prompt system

The present invention relates to the field of electronic technologies, and in particular, to a remote controller and a power prompting system.

As is known, the remote control remotely operates the electronic device by transmitting an infrared remote control signal to an electronic device such as a television, a CD player, an air conditioner, or a personal computer. The remote control is typically powered by a battery to provide power to the infrared light-emitting diodes in the remote control.

However, the user cannot know if the battery power in the remote controller is sufficient. Therefore, when the battery in the remote controller is insufficient, the remote controller will not be able to send the remote control signal to the electronic device to perform the remote control operation, which may cause the user to mistakenly believe that the electronic device is malfunctioning, causing confusion to the user.

In view of this, it is necessary to provide a remote controller that can control the electronic device to send a low battery warning message.

It is also necessary to provide a battery alert system that can send a message indicating that the battery is low.

A remote controller includes a button, a battery, a first transmitting unit, a second transmitting unit, a detecting circuit, and a switching circuit. The first transmitting unit is configured to send the first remote control signal to the electronic device to control the electronic device to perform a corresponding remote control function. The detecting circuit is configured to detect a voltage of the battery and generate a first detecting signal when the detecting voltage is less than a predetermined voltage. The switch circuit is turned on according to the first detection signal to electrically connect the battery and the second transmitting unit, and the second transmitting unit receives the voltage provided by the battery to send the second remote control signal to the electronic device to control the electronic The device sends a low battery low message to the remote control.

A power prompt system includes a remote controller and an electronic device. The remote controller comprises a button, a battery, a first transmitting unit, a second transmitting unit, a detecting circuit and a switching circuit, and the electronic device comprises a wireless receiving unit, a processing unit and a prompting unit. The first transmitting unit is configured to send a first remote control signal, the wireless receiving unit is configured to receive the first remote control signal to generate a first driving signal, and the processing unit performs a corresponding remote control function according to the first driving signal. The detecting circuit is configured to detect a voltage of the battery, and generate a first detecting signal when the detecting voltage is less than a predetermined voltage, and the switch circuit is turned on according to the first detecting signal to turn on between the battery and the second transmitting unit. Electrically connected, the second transmitting unit receives the voltage provided by the battery to transmit the second remote control signal. The wireless receiving unit is configured to receive the second remote control signal, and generate a second driving signal according to the second remote control signal, and the processing unit is configured to: according to the second driving signal, the prompting unit sends a low battery low battery prompt message.

The remote controller and the power prompting system are provided with a detecting circuit and a switch circuit. When the detecting circuit detects that the power of the remote controller is too low, the switch circuit is turned on to provide the voltage of the battery to the second transmitting unit. So that the second transmitting unit sends the second remote The control signal is sent to the electronic device, so that the electronic device sends a message indicating that the remote controller has insufficient battery power.

100‧‧‧Power reminder system

11‧‧‧ button

13‧‧‧First launch unit

15‧‧‧Switch circuit

20‧‧‧Electronic equipment

24‧‧‧Processing unit

27‧‧‧ display

Vi, V _Z ‧‧‧ voltage

R1, R2, R3, R4‧‧‧ resistance

Q1‧‧‧Triode

10‧‧‧Remote control

12‧‧‧Battery

14‧‧‧Detection circuit

16‧‧‧second launch unit

22‧‧‧Wire receiving unit

25‧‧‧Cue unit

28‧‧‧Speakers

A, B‧‧‧ nodes

D1‧‧‧Zina diode

T1, T2‧‧‧ Infrared LED

1 is a schematic diagram of a power reminder system in accordance with a preferred embodiment.

FIG. 2 is a functional module diagram of the battery prompting system of FIG. 1.

3 is a partial circuit diagram of the power prompt system of FIG. 2.

Referring to FIG. 1 and FIG. 2 , a power prompt system 100 of a preferred embodiment includes a remote controller 10 and an electronic device 20 . The remote controller 10 is configured to send a remote control command to the electronic device 20 to control the electronic device 20 to perform corresponding functions, such as powering on, powering off, adjusting the volume, and the like. In the present embodiment, the electronic device 20 will be described by taking a television as an example.

The remote controller 10 includes a plurality of buttons 11, a battery 12, a first transmitting unit 13, a detecting circuit 14, a switching circuit 15, and a second transmitting unit 16. Battery 12 is used to power circuitry within remote control 10. When a certain button 11 is pressed, the first transmitting unit 13 receives the voltage provided by the battery 12 to transmit a first remote control signal corresponding to the button 11 to the electronic device 20, thereby causing the electronic device 20 to perform a corresponding remote control function. Such as tuning, adjusting the volume and so on.

The detecting circuit 14 is configured to detect the voltage of the battery 12 and compare the detected voltage with a predetermined voltage. When the detected voltage is less than the predetermined voltage, that is, the battery 12 is insufficient in power, the detecting circuit 14 generates the first detecting signal. When the detection voltage is greater than or equal to the predetermined voltage, that is, the battery 12 has sufficient power, the detection circuit 14 generates a second detection signal. In this embodiment, the detecting circuit 14 includes a Zener diode, and the predetermined voltage is Zener. The reverse breakdown voltage of the diode.

The switch circuit 15 is connected to the battery 12, the detection circuit 14, and the second transmitting unit 16, respectively. The switch circuit 15 is configured to receive the first detection signal and turn on according to the first detection signal to electrically connect the battery 12 and the second transmitting unit 16, so that the battery 12 supplies power to the second transmitting unit 16, and second The transmitting unit 16 sends the second remote control signal to the electronic device 20, so that the electronic device 20 sends a prompt message indicating that the battery 12 is insufficient. In this embodiment, the first transmitting unit 13 and the second transmitting unit 16 are both infrared light emitting diodes for emitting different encoded infrared rays.

The switch circuit 15 is further configured to receive the second detection signal and turn off according to the second detection signal to cut off the electrical connection between the battery 12 and the second transmitting unit 16, so that the battery 12 cannot be given to the second transmitting unit 16 After the power is supplied, the second transmitting unit 16 stops transmitting the second remote control signal to the electronic device 20.

The electronic device 20 includes a wireless receiving unit 22, a processing unit 24, and a prompting unit 25. The first receiving signal and the second driving signal are respectively generated according to the first remote control signal and the second remote control signal. In this embodiment, the wireless receiving unit 22 is an infrared receiving diode for receiving infrared rays emitted by the first transmitting unit 13 and the second transmitting unit 15.

The processing unit 24 is configured to receive the first driving signal and the second driving signal, and perform operations such as tuning the electronic device 20, adjusting the volume, and the like according to the first driving signal. The processing unit 24 also controls the prompting unit 25 to issue a low battery alert message of the battery 12 according to the second driving signal. In the present embodiment, the prompting unit 25 is a display screen 27 for Under the control of the processing unit 24, the video message "The battery of the remote controller is insufficient, please replace it in time" is displayed. In other embodiments, the prompting unit 25 is a speaker 28 for issuing an audio prompt message under the control of the processing unit 24 to remind the user that the battery 12 in the remote controller 10 is insufficient.

FIG. 3 is a partial circuit diagram of the power prompt system 100. The first transmitting unit 13 includes an infrared light emitting diode T1. The anode of the infrared illuminating diode T1 is connected to the battery 12 by means of a button 11, and the cathode is grounded. The detecting circuit 14 includes a first current limiting resistor R1, a second current limiting resistor R2, a Zener diode D1, and a pull-down resistor R3. The cathode of the Zener diode D1 is connected to the battery 12 by a first current limiting resistor R1, and the anode is grounded by a second current limiting resistor R2 and a pull-down resistor R3.

The switching circuit 15 includes a triode Q1 and a pull-up resistor R4. The base of the transistor Q1 is connected between the second current limiting resistor R2 and the pull-down resistor R3, and the emitter is grounded. The pull-up resistor R4 is connected between the collector of the transistor Q1 and the battery 12. The second transmitting unit 16 includes an infrared light emitting diode T2. The anode of the infrared illuminating diode T2 is connected between the collector of the triode Q1 and the pull-up resistor R4, and the cathode is grounded.

The working principle of the power prompting system 100 is as follows: when a certain button 11 on the remote controller 10 is pressed, the infrared light emitting diode T1 receives the voltage provided by the battery 12 to send the first remote control signal to the electronic device 20, The control electronics 20 performs remote control operations such as tuning, adjusting the volume, and the like. At the same time, the voltage Vi of the battery 12 is divided by the first current limiting resistor R1, so that the voltage VA of the node A connected between the first current limiting resistor R1 and the Zener diode D1 is greater than that of the Zener diode D1. When the reverse breakdown voltage V _Z is reversed, the Zener diode D1 is reverse-conducted. Therefore, the base voltage Vb of the triode Q1 connected between the second current limiting resistor R2 and the pull-down resistor R3 is greater than the turn-on voltage of the triode Q1, the triode Q1 is turned on, and the collector voltage Ve of the triode Q1 is Ve= 0.2V, the anode of the infrared light-emitting diode T2 is grounded by the collector and emitter of the triode Q1, and the collector voltage Ve of the triode Q1 is too low to drive the infrared light-emitting diode T2 to send the second remote control signal to Electronic device 20.

When the power of the battery 12 is too low, that is, the voltage Vi of the battery 12 is divided by the first current limiting resistor R1, the voltage VA connected to the node A between the first current limiting resistor R1 and the Zener diode D1 is made. When the reverse breakdown voltage V _Z of the Zener diode D1 is smaller, the Zener diode D1 is in a high resistance state, and the base voltage Vb of the transistor Q1 is smaller than the conduction voltage of the transistor Q1, the triode Q1 At this time, the battery 12 supplies power to the infrared light emitting diode T2 through the pull-up resistor R4, so the infrared light emitting diode T2 sends the second remote control signal to the electronic device 20. When detecting the second encoded remote control signal, the electronic device 20 sends a low battery warning message to remind the user that the battery 12 of the remote controller 10 is insufficient in power and needs to be replaced in time.

The electronic device 20 can also be a disc player (DVD player, Blue-ray Blu-ray player), an air conditioner, a personal computer, and the like. The remote controller can also control the electronic device 20 for other wireless transmission methods, such as RF waves, Bluetooth, and the like.

In summary, the present invention complies with the requirements of the invention patent and submits a patent application according to law. The above descriptions are only preferred embodiments of the present invention, and those skilled in the art will be able to include equivalent modifications or variations in the spirit of the present invention.

100‧‧‧Power reminder system

11‧‧‧ button

13‧‧‧First launch unit

15‧‧‧Switch circuit

20‧‧‧Electronic equipment

24‧‧‧Processing unit

10‧‧‧Remote control

12‧‧‧Battery

14‧‧‧Detection circuit

16‧‧‧second launch unit

22‧‧‧Wire receiving unit

25‧‧‧Cue unit

Claims (9)

A remote controller includes a button, a battery, and a first transmitting unit, wherein the first transmitting unit is configured to send the first remote control signal to the electronic device to control the electronic device to perform a corresponding remote control function, and the improvement is that the remote controller further includes a second transmitting unit, a detecting circuit and a switching circuit, wherein the detecting circuit is configured to detect a voltage of the battery, and generate a first detecting signal when the detecting voltage is less than a predetermined voltage, and the switching circuit is configured according to the first detecting The signal is turned on to electrically connect the battery to the second transmitting unit, and the second transmitting unit receives the voltage provided by the battery to send the second remote control signal to the electronic device to control the electronic device to emit the battery of the remote controller. Prompt message. The remote control device of claim 1, wherein the detecting circuit is further configured to generate a second detecting signal when the detecting voltage is greater than or equal to a predetermined voltage, and the switching circuit is turned off according to the second detecting signal. In order to cut off the electrical connection between the battery and the second transmitting unit, the second transmitting unit stops transmitting the second remote control signal to the electronic device. The remote controller of claim 1, wherein the first emitting unit comprises a first infrared light emitting diode, and the second emitting unit comprises a second infrared light emitting diode, the first infrared light emitting diode And the second infrared light emitting diode emits differently encoded infrared light. The remote controller of claim 1, wherein the detecting circuit comprises a Zener diode and a pull-down resistor, the cathode of the Zener diode is connected to the battery, and the anode is grounded by a pull-down resistor, the predetermined voltage It is the reverse breakdown voltage of the Zener diode. The remote controller of claim 4, wherein the switch circuit comprises a pull-up resistor and a triode, the base of the triode being connected to the anode and the pull-down of the Zener diode Between the resistors, the emitter is grounded, and the pull-up resistor is connected between the collector of the triode and the battery. A power prompting system includes a remote controller and an electronic device. The remote controller includes a button, a battery, and a first transmitting unit. The electronic device includes a wireless receiving unit and a processing unit, and the first transmitting unit is configured to send the first remote control signal. The wireless receiving unit is configured to receive a first remote control signal to generate a first driving signal, and the processing unit performs a corresponding remote control function according to the first driving signal, wherein the remote controller further includes a second transmitting unit, a detecting circuit, and a switching circuit, configured to detect a voltage of the battery, and generate a first detection signal when the detection voltage is less than a predetermined voltage, the switch circuit is turned on according to the first detection signal to turn on the battery and the second emission An electrical connection between the units, the second transmitting unit receiving the voltage provided by the battery to send the second remote control signal, the electronic device further comprising a prompting unit, the wireless receiving unit is configured to receive the second remote control signal, and according to the The second remote control signal generates a second driving signal, and the processing unit is configured to send the prompting unit according to the second driving signal Insufficient battery charge controller prompt message. The power prompting system described in claim 6 , wherein the prompting unit is one of a display screen and a speaker, and when the prompting unit is a display screen, displaying a video prompt of insufficient battery power under the control of the processing unit The message, when the prompting unit is a speaker, sends an audio message indicating that the battery is low under the control of the processing unit. The power prompting system of claim 6, wherein the detecting circuit comprises a Zener diode and a pull-down resistor, the cathode of the Zener diode is connected to the battery, and the anode is grounded by a pull-down resistor, the predetermined The voltage is the reverse breakdown voltage of the Zener diode. The power prompting system of claim 8, wherein the switching circuit comprises a pull-up resistor and a triode, and a base of the triode is connected between the anode of the Zener diode and the pull-down resistor, The pole is grounded, and the pull-up resistor is connected between the collector of the triode and the battery.