CN216351870U - AK802 control circuit based on 2.4G remote control and standby control - Google Patents
AK802 control circuit based on 2.4G remote control and standby control Download PDFInfo
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- CN216351870U CN216351870U CN202122976382.XU CN202122976382U CN216351870U CN 216351870 U CN216351870 U CN 216351870U CN 202122976382 U CN202122976382 U CN 202122976382U CN 216351870 U CN216351870 U CN 216351870U
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Abstract
The utility model provides an AK802 control circuit based on 2.4G remote control and standby control, which comprises a chip circuit, an on-board infrared receiving head, a 2.4G remote control circuit, an AK802 circuit and an AK802 peripheral circuit, wherein a pin 6 of the AK802 circuit is connected with a main chip circuit, pull-up resistors are respectively connected between pins 10 and 11 of the AK802 circuit and the main chip circuit, a pin 8 of the AK802 circuit is connected with the on-board infrared receiving head, the 2.4G remote control circuit receives a remote control signal through a metal sheet antenna and inputs the remote control signal to a pin 15 of the AK802 circuit, and the pin 6 of the 2.4G remote control circuit outputs the remote control signal to the main chip circuit through an IR _ RX network after being processed by the AK802 circuit; the main chip circuit is connected to pins 10 and 11 of the AK802 circuit through an I2C signal line, and the pin 10 and the pin 11 of the AK802 circuit are connected with the nixie tube of the front control panel through an F _ SCL network and an F _ SDA network. The utility model can integrate the 2.4G remote control circuit and the standby control circuit on a single chip microcomputer, thereby solving the problem of higher cost in the prior art.
Description
Technical Field
The utility model relates to the technical field of network set top boxes, in particular to an AK802 control circuit based on 2.4G remote control and standby control.
Background
In recent years, the rapid development of the digital television industry, especially the cable digital television industry, continues, the market of the digital television set-top box and the overall conversion of the digital television develop synchronously, and the market scale is increasing continuously. As a result, set-top boxes are becoming essential home appliances for more and more users. The Network Set-Top Box (STB) technology is a vital technical device in information and household appliances, and the function of the Set-Top Box has been upgraded from a multi-frequency tuner and decoder to a control terminal of an online database of a large number of movies, multimedia events, news, etc.
On the other hand, with the increasing shortage of global energy and the increasing rise of global energy-saving call, all countries begin to pay attention to the problem of energy saving, and meanwhile, users have more and more requirements on the set-top box, and hope that the set-top box can realize intelligent standby.
The single chip computer (Microcontrollers) is an integrated circuit chip, and is a small and perfect microcomputer system formed by integrating the functions of a central processing unit CPU with data processing capacity, a random access memory RAM, a read only memory ROM, various I/O ports, an interrupt system, a timer/counter and the like (possibly including a display drive circuit, a pulse width modulation circuit, an analog multiplexer, an A/D converter and the like) on a silicon chip by adopting a super-large scale integrated circuit technology, and is widely applied to the field of industrial control.
At present, in the prior art, 2.4G function and standby control function are respectively realized by a single chip microcomputer, and each function needs to be controlled by one single chip microcomputer.
Therefore, the prior art is high in cost, and mainly comprises the following aspects:
1. material cost:
1) chip cost: the prior art needs two singlechips, and the utilization rate of the chips is not high.
2) Cost of the circuit board: the prior art occupies a large space of a circuit board, and the area of the circuit board needs to be enlarged; the number of perforations increases the complexity of the circuit layout. All of which increase the cost of the circuit board.
2. Manpower cost: in the prior art, circuits are complicated, the difficulty of drawing and distributing the circuit board is improved, and the time for drawing the circuit board is increased.
Therefore, a set-top box control circuit compatible with 2.4G remote control and having standby control is needed.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model aims to provide the AK802 control circuit based on 2.4G remote control and standby control, the circuit can integrate the 2.4G remote control circuit and the standby control circuit on a single chip, and the problem of high cost in the prior art is solved.
In order to solve the problems, the technical scheme adopted by the utility model is as follows:
an AK802 control circuit based on 2.4G remote control and standby control, comprising: the AK control circuit comprises a main chip circuit, an on-board infrared receiving head, a 2.4G remote control circuit, an AK802 circuit and an AK802 peripheral circuit connected with the AK802 circuit, wherein a pin 6 of the AK802 circuit is connected with the main chip circuit, pull-up resistors are respectively connected between pins 10 and 11 of the AK802 circuit and the main chip circuit, and a pin 8 of the AK802 circuit is connected with the on-board infrared receiving head; the 2.4G remote control circuit receives a remote control signal through a metal sheet antenna, inputs the remote control signal into a pin 15 of the AK802 circuit, and outputs the remote control signal to the main chip circuit through an IR _ RX network by a pin 6 of the AK802 circuit after being processed by the AK802 circuit; the main chip circuit is connected to pins 10 and 11 of the AK802 circuit through an I2C signal line, and the pins 10 and 11 of the AK802 circuit are connected with a nixie tube of a front control panel through an F _ SCL network and an F _ SDA network.
Further, the 2.4G remote control circuit includes a 2.4G _ RCU network, a resistor R230, a capacitor C243, and a capacitor C245, the 2.4G remote control circuit is connected to the pin 15 of the AK802 circuit through the 2.4G _ RCU network, a first end of the capacitor C245 is connected to a first end of the resistor R230, a second end of the capacitor C245 is grounded, the capacitor C243 is connected to a second end of the resistor R230, and a second end of the capacitor C243 is grounded.
The further scheme is that the AK802 peripheral circuit comprises a power supply circuit, a crystal oscillator circuit and a key circuit, and the AK802 circuit is respectively connected with the power supply circuit, the crystal oscillator circuit and the key circuit.
A further scheme is that the key circuit includes a key switch S1, an ESD diode, a resistor R172, and a capacitor C51, wherein a first end of the resistor R172 is connected to the pin 13 of the AK802 circuit, a second end of the resistor R172 is connected to the first end of the key switch S1 and the first end of the capacitor C51, a first end of the ESD diode is connected between a second end of the resistor R172 and the first end of the capacitor C51, a second end of the ESD diode is connected to the ground after being connected to the second end of the capacitor C51, and a second end of the key switch S1 is grounded.
In a further scheme, the crystal oscillator circuit comprises a crystal oscillator Y2, a first end of the crystal oscillator Y2 is connected with a capacitor 31, and a second end of the crystal oscillator Y2 is connected with a capacitor C30.
Further, the AK circuit further comprises a motherboard power supply circuit, and the pin 12 of the AK802 circuit is connected to the motherboard power supply circuit.
In a further aspect, the AK circuit further comprises a power indicator, and the pin 14 of the AK802 circuit is connected to the power indicator.
In a further aspect, the pin 6 of the AK802 circuit is connected to the main chip circuit through a matching resistor.
Therefore, the circuit provided by the utility model can simultaneously realize the 2.4G remote control function and the standby control function of the set-top box on the same singlechip. Therefore, the utility model has the advantages of simple circuit, reasonable design, strong practicability, material cost and labor cost saving and high chip utilization degree.
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Drawings
Fig. 1 is a schematic diagram of an embodiment of an AK802 control circuit based on 2.4G remote control and standby control according to the present invention.
Fig. 2 is a schematic circuit diagram of an embodiment of an AK802 control circuit based on 2.4G remote control and standby control according to the present invention.
Fig. 3 is a schematic circuit diagram of a 2.4G remote control circuit in an embodiment of an AK802 control circuit based on 2.4G remote control and standby control according to the present invention.
Fig. 4 is a schematic circuit diagram of a key circuit in an embodiment of an AK802 control circuit based on 2.4G remote control and standby control according to the present invention.
Fig. 5 is a schematic circuit diagram of a crystal oscillator circuit in an embodiment of an AK802 control circuit based on 2.4G remote control and standby control according to the present invention.
Fig. 6 is a schematic circuit diagram of a power supply circuit in an embodiment of an AK802 control circuit based on 2.4G remote control and standby control according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the drawings of the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the utility model without any inventive step, are within the scope of protection of the utility model.
Referring to fig. 1 and fig. 2, an AK802 control circuit based on 2.4G remote control and standby control includes: the AK control circuit comprises a main chip circuit 10, an on-board infrared receiving head 20, a 2.4G remote control circuit 30, an AK802 circuit 40 and an AK802 peripheral circuit 80 connected with the AK802 circuit 40, wherein a pin 6 of the AK802 circuit 40 is connected with the main chip circuit 10, pull-up resistors R244 and R243 are connected between pins 10 and 11 of the AK802 circuit 40 and the main chip circuit 10 respectively, and a pin 8 of the AK802 circuit 40 is connected with the on-board infrared receiving head 20.
The 2.4G remote control circuit 30 receives a remote control signal through the metal sheet antenna 1, inputs the remote control signal to the pin 15 of the AK802 circuit 40, and outputs the remote control signal to the main chip circuit 10 through the IR _ RX network through the pin 6 of the AK802 circuit 40 after being processed by the AK802 circuit.
The main chip circuit 10 is connected to the pins 10 and 11 of the AK802 circuit 40 through an I2C signal line, and the pins 10 and 11 of the AK802 circuit 40 are connected to the nixie tube 60 of the front control board through an F _ SCL network and an F _ SDA network. The I2C bus of this embodiment is two lines-a Serial Data (SDA) and a Serial Clock (SCL) line-that can communicate information between devices.
As shown in fig. 3, the 2.4G remote control circuit 30 includes a 2.4G _ RCU network, a resistor R230, a capacitor C243, and a capacitor C245, the 2.4G remote control circuit 30 is connected to the pin 15 of the AK802 circuit 40 through the 2.4G _ RCU network, a first end of the capacitor C245 is connected to a first end of the resistor R230, a second end of the capacitor C245 is grounded, a capacitor C243 is connected to a second end of the resistor R230, and a second end of the capacitor C243 is grounded.
In this embodiment, the AK802 peripheral circuit 80 includes a power supply circuit, a crystal oscillator circuit, and a key circuit, and the AK802 circuit 40 is connected to the power supply circuit, the crystal oscillator circuit, and the key circuit, respectively.
As shown in fig. 4, the key circuit includes a key switch S1, an ESD diode DC04, a resistor R172, and a capacitor C51, wherein a first end of the resistor R172 is connected to the pin 13 of the AK802 circuit 40, a second end of the resistor R172 is connected to a first end of the key switch S1 and a first end of the capacitor C51, a first end of the ESD diode DC04 is connected between a second end of the resistor R172 and a first end of the capacitor C51, a second end of the ESD diode DC04 is connected to the second end of the capacitor C51 and then grounded, and a second end of the key switch S1 is grounded.
As shown in fig. 5, the crystal oscillator circuit includes a crystal oscillator Y2, a capacitor 31 is connected to a first end of the crystal oscillator Y2, and a capacitor C30 is connected to a second end of the crystal oscillator Y2.
As shown in fig. 6, the power supply circuit includes VCC3V3, LDO _3.3V, capacitor CP2, and capacitor CP 3.
In this embodiment, a motherboard power supply circuit 50 is further included, and the pin 12 of the AK802 circuit 40 is connected to the motherboard power supply circuit 50.
In this embodiment, a power indicator 70 is further included, and the pin 14 of the AK802 circuit 40 is connected to the power indicator 70.
In the present embodiment, the pin 6 of the AK802 circuit 40 is connected to the main chip circuit 10 through a matching resistor R241.
Specifically, the main body of the AK802 peripheral circuit 80 of the present embodiment is divided into four portions, namely, a power supply portion, a crystal oscillator portion, a 2.4G portion, and a standby control portion. The power supply part and the crystal oscillator part are used for ensuring the normal operation of the machine. The 2.4G remote control function and the standby control function of the set-top box can be realized by combining the 2.4G part and the standby control part with the AK802 circuit 40.
For the 2.4G remote control function, the main operation is to receive the remote control signal through the metal plate antenna 1, input the remote control signal to the pin 15 of the AK802 circuit 40 capable of receiving the 2.4G signal, which is a series of high and low level digital signals, process the signal through the AK802 by the pin 6 of the AK802 and output the signal to the main chip circuit 10 through the IR _ RX network.
For the standby control function, the following aspects are included:
1. standby power-on control (mainboard power supply control) of the set-top box: a 10k resistor is pulled up at the pin 11 of the AK802 circuit 40, so that the driving capability of high level can be added to the GPIO port of the AK802 circuit 40 and the current can be limited by the 10k resistor to avoid damaging the main chip. When the AK802 circuit 40 normally works, the pin 11 of the AK802 circuit 40 outputs a high level, and when a remote controller sends a standby signal to an infrared receiving head or a 2.4G antenna, or a power key of a mainboard is pressed to cause the potential of the pin 13 of the AK802 circuit 40 to be lowered, the pin 11 is converted from the high level to a low level, so that the power supply is cut off.
2. Control of the onboard infrared receiving head 20 during standby: in normal operation, signals received by the IR receiving head are directly transmitted to the main chip circuit 10 through the IR _ RX network. When the power supply is cut off and the main chip does not work, that is, when the main chip is in a standby state, the infrared receiving head receives a power-on signal and then transmits the power-on signal to the AK802 circuit 40 through the IR _ RX network, so that the pin 11 outputs a high level to start the machine.
3. The nixie tube 60 performs standby display control: in normal operation, the main chip circuit 10 controls the nixie tube 60 to transmit information through the pair of I2C signal lines F _ SCL and F _ SDA. When entering the standby state, the nixie tube 60 is controlled through the F _ SCL and F _ SDA networks through the pin 10 and the pin 11 of the AK802 circuit 40, and at this time, the main chip circuit 10 may interfere with the signal of I2C because the standby state is not completely turned off, which may cause the nixie tube 60 to display a messy code. In order to overcome the problem, the utility model adds a pair of 100R resistors on the I2C signal line, and the circuit design skill can avoid the standby code disorder of the nixie tube 60 and enable the master chip to normally control the nixie tube 60 during normal operation.
Therefore, the circuit provided by the utility model can simultaneously realize the 2.4G remote control function and the standby control function of the set-top box on the same singlechip. Therefore, the utility model has the advantages of simple circuit, reasonable design, strong practicability, material cost and labor cost saving and high chip utilization degree.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are within the protection scope of the present invention.
Claims (8)
1. An AK802 control circuit based on 2.4G remote control and standby control, comprising:
the AK control circuit comprises a main chip circuit, an on-board infrared receiving head, a 2.4G remote control circuit, an AK802 circuit and an AK802 peripheral circuit connected with the AK802 circuit, wherein a pin 6 of the AK802 circuit is connected with the main chip circuit, pull-up resistors are respectively connected between pins 10 and 11 of the AK802 circuit and the main chip circuit, and a pin 8 of the AK802 circuit is connected with the on-board infrared receiving head;
the 2.4G remote control circuit receives a remote control signal through a metal sheet antenna, inputs the remote control signal into a pin 15 of the AK802 circuit, and outputs the remote control signal to the main chip circuit through an IR _ RX network by a pin 6 of the AK802 circuit after being processed by the AK802 circuit;
the main chip circuit is connected to pins 10 and 11 of the AK802 circuit through an I2C signal line, and the pins 10 and 11 of the AK802 circuit are connected with a nixie tube of a front control panel through an F _ SCL network and an F _ SDA network.
2. The AK802 control circuit according to claim 1, wherein:
the 2.4G remote control circuit comprises a 2.4G _ RCU network, a resistor R230, a capacitor C243 and a capacitor C245, wherein the 2.4G remote control circuit is connected with a pin 15 of the AK802 circuit through the 2.4G _ RCU network, a first end of the capacitor C245 is connected with a first end of the resistor R230, a second end of the capacitor C245 is grounded, the capacitor C243 is connected with a second end of the resistor R230, and a second end of the capacitor C243 is grounded.
3. The AK802 control circuit according to claim 2, wherein:
the AK802 peripheral circuit comprises a power supply circuit, a crystal oscillator circuit and a key circuit, and the AK802 circuit is respectively connected with the power supply circuit, the crystal oscillator circuit and the key circuit.
4. The AK802 control circuit according to claim 3, wherein:
the key circuit comprises a key switch S1, an ESD diode, a resistor R172 and a capacitor C51, wherein the first end of the resistor R172 is connected with a pin 13 of the AK802 circuit, the second end of the resistor R172 is connected with the first end of the key switch S1 and the first end of the capacitor C51 respectively, the first end of the ESD diode is connected between the second end of the resistor R172 and the first end of the capacitor C51, the second end of the ESD diode is connected with the second end of the capacitor C51 and then grounded, and the second end of the key switch S1 is grounded.
5. The AK802 control circuit according to claim 3, wherein:
the crystal oscillator circuit comprises a crystal oscillator Y2, a first end of the crystal oscillator Y2 is connected with a capacitor 31, and a second end of the crystal oscillator Y2 is connected with a capacitor C30.
6. The AK802 control circuit according to any of claims 1 to 5, wherein:
the AK802 circuit also comprises a mainboard power supply circuit, and the pin 12 of the AK802 circuit is connected to the mainboard power supply circuit.
7. The AK802 control circuit according to any of claims 1 to 5, wherein:
a power indicator is also included, to which pin 14 of the AK802 circuit is connected.
8. The AK802 control circuit according to any of claims 1 to 5, wherein:
and a pin 6 of the AK802 circuit is connected with the main chip circuit through a matching resistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122976382.XU CN216351870U (en) | 2021-11-29 | 2021-11-29 | AK802 control circuit based on 2.4G remote control and standby control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122976382.XU CN216351870U (en) | 2021-11-29 | 2021-11-29 | AK802 control circuit based on 2.4G remote control and standby control |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216351870U true CN216351870U (en) | 2022-04-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122976382.XU Active CN216351870U (en) | 2021-11-29 | 2021-11-29 | AK802 control circuit based on 2.4G remote control and standby control |
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| Country | Link |
|---|---|
| CN (1) | CN216351870U (en) |
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2021
- 2021-11-29 CN CN202122976382.XU patent/CN216351870U/en active Active
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