CN102299570A - Wireless transmission system - Google Patents

Abstract

The invention provides a wireless transmission system for wirelessly transmitting electric energy and signals to electrical and electronic equipment, which includes an electric energy generating device and a wireless signal processing device. Wherein, the electric energy generating device is used for wirelessly providing electric energy to the electronic and electrical equipment, and the wireless signal processing device is used for wirelessly transmitting signals to the electronic and electrical equipment. The electric energy generating device and the wireless signal processing device are respectively connected with a power supply device connected to AC mains to form a power supply circuit. The wireless transmission system of the present invention can not only provide electric energy to the electronic and electrical equipment, but also provide wireless signals to the electronic and electrical equipment.

Description

wireless transmission system

technical field

The invention relates to a power supply device, and in particular to a wireless transmission system for wirelessly transmitting electric energy and signals to electronic and electrical equipment.

Background technique

For a long time, wireless technology has remained in the field of information applications, such as wireless transmission of signals, but its power transmission characteristics have not been developed as expected. Therefore, the electronic devices that people use daily must be equipped with dedicated power adapters to be electrically connected to AC mains or equipped with batteries to provide power to the electronic devices. However, the existing power adapter needs to be equipped with a power cord to be electrically connected to the electronic device, and due to the limitation of the power cord, it is extremely inconvenient to move the electronic device.

With the development of science and technology, wireless power supply technology has been developed, which transmits electric energy to electronic devices in a wireless manner. Wireless power supply technology is also called resonant inductive coupling technology, which uses two coils with similar or the same resonant frequency for deep electromagnetic coupling to generate strong resonance to transfer power from the power output unit of the wireless power supply system (or called the primary side) ) to the power receiving unit (or called the secondary side).

The wireless power supply system used for household appliances such as TV sets has high requirements on the performance of the wireless power supply system itself due to the limitations of the use environment, energy consumption and environmental protection, such as efficient and stable supply, controllable high-capacity output And low electromagnetic interference and so on. For household appliances such as televisions, it not only needs to be equipped with a wireless power supply system to provide power for them, but it may also need to be electrically connected to other auxiliary signal transmission devices, such as set-top boxes, game consoles, or DVD players, to provide signal wireless. Signals to household appliances such as TV sets. However, these auxiliary signal transmission devices also require a dedicated power supply device to provide electric energy, so it also limits the scope of use of these household appliances. In addition, in the traditional technology, signal transmission devices such as set-top boxes are usually connected to household appliances such as televisions in a wired form, so that household appliances such as televisions are limited by connecting wires.

Contents of the invention

The purpose of the present invention is to provide a wireless transmission system, which can not only provide electric energy to electronic and electrical equipment, but also provide electric energy to a wireless signal processing device, so that the wireless signal processing device can send wireless signals to the electronic and electrical equipment.

The purpose of the present invention and the solution to its technical problems are achieved by adopting the following technical solutions.

The invention provides a wireless transmission system for wirelessly transmitting electric energy and signals to electrical and electronic equipment, which includes an electric energy generating device and a wireless signal processing device. Wherein, the electric energy generating device is used for wirelessly providing electric energy to the electronic and electrical equipment, and the wireless signal processing device is used for wirelessly transmitting signals to the electronic and electrical equipment. The electric energy generating device and the wireless signal processing device are respectively connected with a power supply device connected to AC mains to form a power supply circuit.

Preferably, the power supply device includes a first power supply unit and a second power supply unit, the output end of the first power supply unit is connected to the power generating device, and the output end of the second power supply unit is connected to the wireless signal processing device.

Preferably, the first power supply unit includes an AC input unit and a power supply unit. The AC input unit is connected to the AC mains, the input end of the power supply unit is electrically connected to the AC input unit, and the output end is connected to the electric energy generating device. The second power supply unit is connected to the AC input unit to obtain power from the AC input unit, or connected to the power supply unit to obtain power from the power supply unit.

Preferably, the power output device includes a control unit, which is electrically connected to the power supply unit, and the control unit controls to generate a frequency signal; and a power output circuit, which is electrically connected to the control unit, and the power output circuit is based on The frequency signal generates a power signal, and transmits the power signal to the electronic and electrical equipment.

Preferably, the control unit includes a control circuit and an oscillating circuit electrically connected, the power supply unit outputs a DC voltage to the control circuit and the oscillating circuit respectively, the control circuit sends a control signal to the oscillating circuit, and the oscillating circuit A frequency signal with a main oscillation frequency is generated.

Preferably, the power supply unit includes a high-voltage circuit, the input end of which is electrically connected to the AC input unit, and the output end is electrically connected to the oscillating circuit. The high-voltage circuit converts the output of the AC power supply into a high-voltage DC voltage and outputs it to the oscillating circuit; and a low-voltage circuit, the input end of which is electrically connected to the AC input unit, and the output end is electrically connected to the control circuit. The low-voltage circuit converts the AC power into a low-voltage DC voltage and outputs it to the control circuit.

Preferably, the power supply unit includes a high-voltage circuit, the input end of which is electrically connected to the AC input unit, and the output end is electrically connected to the oscillating circuit. The high-voltage circuit converts the output of the AC power supply into a high-voltage DC voltage and outputs it to the oscillating circuit; and a low-voltage circuit, the input end of which is electrically connected to the output end of the high-voltage circuit, and the output end is electrically connected to the control circuit, and the low-voltage circuit converts the high-voltage DC voltage output by the high-voltage circuit into a low-voltage DC voltage output to the control circuit.

Preferably, the high-voltage circuit includes a rectification and filtering circuit for converting the AC power into the high-voltage DC voltage; and a voltage stabilizer electrically connected with the rectification and filtering circuit for stabilizing the high-voltage DC voltage.

Preferably, the low-voltage circuit includes a step-down circuit connected to the AC input unit to perform step-down processing on the AC mains to generate a low-voltage AC voltage; a rectifier and filter circuit connected to the step-down circuit to generate a low-voltage AC voltage The AC voltage is converted into the low voltage DC voltage; and a voltage stabilizer is electrically connected with the rectification filter circuit to stabilize the low voltage DC voltage.

Preferably, the wireless signal processing device includes a control board electrically connected to the second power supply unit for receiving the low-voltage DC voltage generated by the second power supply unit and controlling the operation of the wireless signal processing device; a signal a processor, electrically connected to the control board, used to receive and process weak electrical signals such as audio and video, and transmit the weak electrical signal to the modulator; a modulator, electrically connected to the control board and the signal processor, It is used to modulate the signal received from the signal processor to generate the wireless signal; and a wireless signal output device is electrically connected with the modulator and used to output the wireless signal to the electronic and electrical equipment.

Preferably, the second power supply unit includes a step-down circuit, which transforms the input voltage of the second power supply unit to generate a low-voltage AC voltage; a rectification filter circuit, electrically connected to the step-down circuit, the The low-voltage AC voltage is converted into the low-voltage DC voltage; an anti-electromagnetic interference unit is electrically connected with the rectification and filtering circuit, and is used to prevent signal transmission from being interfered by magnetic interference; and a voltage stabilizer is used to stabilize the low-voltage DC voltage.

Preferably, the step-down circuit of the second power supply unit is connected to the AC input unit or power supply unit of the first power supply unit.

Preferably, the anti-electromagnetic interference unit is an LC filter or a notch network circuit.

Preferably, the second power supply unit further includes an AC input unit connected to the input terminal of the step-down circuit.

The wireless transmission system disclosed in the present invention can not only use the power output unit 110 to wirelessly supply power to common household appliances, but also can integrate the power output unit 110 and the wireless signal output unit 120 for wireless power supply of household appliances, and use the wireless signal output The unit 120 outputs various signals to these household appliances, and there is no need for wired connections between household appliances and their signal transmission devices, so that household appliances can realize wireless power supply and wireless signal connection to the greatest extent, greatly expanding the use of these household appliances range, making it easier for people to use.

The above description is only an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention, it can be implemented according to the contents of the description, and in order to make the above and other purposes, features and advantages of the present invention more obvious and understandable , the following preferred embodiments are specifically cited below, and are described in detail as follows in conjunction with the accompanying drawings.

Description of drawings

FIG. 1 is a schematic diagram of a wireless transmission system according to a preferred embodiment of the present invention.

Fig. 2 is a specific schematic diagram of the first embodiment of the wireless transmission system shown in Fig. 1 .

FIG. 3 is a specific schematic diagram of a second embodiment of the wireless transmission system shown in FIG. 1 .

Fig. 4 is a specific schematic diagram of a third embodiment of the wireless transmission system shown in Fig. 1 .

100: Wireless transmission system 110: Power output unit

1101, 121: Power supply unit 1102: Electric energy generating device

120: Wireless signal output unit 111: AC input unit

112: High voltage circuit 113: Low voltage circuit

114: Control circuit 115: Oscillation circuit

116: Power output circuit 1121: Rectification filter circuit

1122, 1133, 1215: voltage regulator 1131: step-down circuit

1132, 1213: rectification filter circuit 122: wireless signal processing device

1211: AC input unit 1212: Step-down circuit

1214: Anti-electromagnetic interference unit 1221: Control board

1222: signal processor 1223: modulator

1224: Wireless signal output device

Detailed ways

In order to further explain the technical means and effects of the present invention to achieve the intended purpose of the invention, the following in conjunction with the accompanying drawings and preferred embodiments, the specific implementation, structure, features and effects of the wireless transmission system proposed according to the present invention, Details are as follows.

Please refer to FIG. 1 , which is a schematic diagram of a wireless transmission system disclosed by an embodiment of the present invention. As shown in FIG. 1 , the wireless transmission system 100 includes a power output unit 110 and a wireless signal output unit 120, wherein the power output unit 110 is used to wirelessly transmit power to electronic and electrical equipment, and the wireless signal output unit 120 is used to The wireless signal required by the electronic and electrical equipment is transmitted to the electronic and electrical equipment in a wireless manner. Wherein, the electrical and electronic equipment may be a common household appliance, such as a TV or a computer. The wireless signal here may be a radio frequency signal, an infrared signal, an AV new video signal, a wireless network signal, and the like.

Please refer to FIG. 2 , which is a specific schematic diagram of an embodiment of the wireless transmission system shown in FIG. 1 . As shown in FIG. 2 , the power output unit 110 includes a power supply unit 1101 and a power generating device 1102 . Wherein, the power supply unit 1101 includes an AC input unit 111 , a high voltage circuit 112 , and a low voltage circuit 113 . The power generating device 1102 includes a control circuit 114 , an oscillation circuit 115 and a power output circuit 116 . Wherein, the AC input unit 111 is used for receiving AC mains power. The high voltage circuit 112 is electrically connected to the AC input unit 111 to convert the AC power received by the AC input unit 111 into a high voltage DC voltage. The low-voltage circuit 113 is also electrically connected to the AC input unit 111 to convert the AC mains power into a DC voltage and step down the voltage to generate a low-voltage DC voltage. Specifically, the high-voltage circuit 112 includes a rectification filter circuit 1121 and a voltage stabilizer 1122 electrically connected, wherein the rectification filter circuit 1121 is electrically connected to the AC input unit 111 to convert the AC mains power into a high-voltage DC voltage, and the voltage stabilizer 1122 is electrically connected to the AC input unit 111. The rectification filter circuit 1121 is used to stabilize the high voltage DC voltage. The low voltage circuit 113 includes a voltage reducing circuit 1131 , a rectifying and filtering circuit 1132 and a voltage regulator 1133 . Wherein the step-down circuit 1131 is electrically connected to the AC input unit 111 to step down the AC mains to generate a low-voltage AC voltage, and the rectification filter circuit 1132 is electrically connected to the step-down circuit 1131 to convert the low-voltage AC voltage into a low-voltage DC voltage, and stabilize the voltage. The device 1133 is electrically connected to the rectification and filtering circuit 1132 to stabilize the low-voltage DC voltage.

Certainly, those skilled in the art can understand that the low-voltage circuit 113 can also be electrically connected to the high-voltage circuit 112 so as to directly step down the high-voltage DC voltage generated by the high-voltage circuit 112 to generate a low-voltage DC voltage. At this time, the low voltage circuit 113 may only include a step-down circuit 1131 , which is electrically connected to the voltage regulator 1122 or the rectification filter circuit 1121 of the high voltage circuit 112 to directly step down the high voltage DC voltage to obtain a low voltage DC voltage.

In addition, the control circuit 114 is electrically connected to the low-voltage circuit 113 and the oscillation circuit 115, and the low-voltage DC voltage generated by the low-voltage circuit 113 drives the control circuit 114 to generate a control signal to the oscillation circuit 115, so as to control the oscillation circuit 115 to generate a frequency signal with the main oscillation frequency f0 . In addition, the oscillation circuit 115 is electrically connected to the high voltage circuit 112 to generate a frequency signal having a main oscillation frequency f0 by using a high voltage DC voltage and a control signal. Specifically, the control circuit 114 may include a main oscillator, a frequency multiplier and an output part (not shown) that are electrically connected in sequence, the main oscillator generates a main frequency signal, and the main frequency signal is amplified by the frequency multiplier to generate a The required frequency signal is output to the oscillation circuit 115 through the output part. The control circuit 114 may also include a central processing unit (CPU), a frequency synthesizer and an output part (not shown) electrically connected in sequence, the frequency synthesizer generates a frequency signal under the control of the CPU, and then outputs it to the Oscillation circuit 115. The oscillating circuit 115 includes a DC-AC converter and an oscillator (not shown) electrically connected, wherein the DC-AC converter is electrically connected to the output end of the high-voltage circuit 112, that is, the voltage regulator 1122 connection, the oscillator is connected with the DC-AC converter, the control circuit 114 and the power output circuit 116 . The power output circuit 116 is electrically connected to the oscillating circuit 115 and generates a power signal to the electronic and electrical equipment according to the main oscillating frequency f0 of the oscillating source.

The wireless signal output unit 120 includes a power supply unit 121 and a wireless signal processing device 122 . The power supply unit 121 is used to provide electric energy for the wireless signal processing device 122 . The wireless signal processing device 122 is a multifunctional module, which integrates most of the functions of auxiliary household appliances. transmitted to electrical and electronic equipment. Of course, the wireless signal processing device 122 can also insert various discs like a game machine or a DVD player to decode them to generate various audio and video signals, and wirelessly transmit the various audio and video signals to electronic and electrical equipment.

Specifically, the power supply unit 121 includes an AC input unit 1211 , a step-down circuit 1212 , a rectification and filtering circuit 1213 , an anti-electromagnetic interference unit 1214 , and a voltage regulator 1215 , which are electrically connected in sequence. Wherein the AC input unit 1211 is used for receiving AC mains power. The step-down circuit 1212 is electrically connected to the AC input unit 1211 to perform step-down processing on the AC mains to generate a low-voltage AC voltage. The rectification and filtering circuit 1213 is electrically connected to the step-down circuit 1212 to convert the low voltage AC voltage into a low voltage DC voltage. The anti-electromagnetic interference unit 1214 is electrically connected to the rectification and filtering circuit 1213 to prevent various electromagnetic signals in the power output unit 110 from interfering with the low-voltage DC voltage generated by the rectification and filtering circuit 1213 in the wireless signal output unit 120 and the wireless signal generated by the wireless signal processing device 122. . In a preferred embodiment of the present invention, the anti-electromagnetic interference unit 1214 can be an LC filter or a notch network. The voltage stabilizer 1215 is electrically connected to the anti-electromagnetic interference unit 1214 to stabilize the low-voltage DC voltage, so that the power supply unit 121 can stably output the low-voltage DC voltage.

The wireless signal processing device 122 includes a control board 1221 , a signal processor 1222 , a modulator 1223 and a wireless signal outputter 1224 . Wherein, the control board 1221 is electrically connected to the low-voltage DC voltage output by the power supply unit 121 to control the signal processor 1222 and the modulator 1223 . The signal processor 1222 receives and processes various signals, such as audio and video signals of HDTV or other audio and video signals, and so on. The modulator 1223 modulates various audio and video signals and generates corresponding wireless signals, and the wireless signal output unit 1224 is used to output these corresponding wireless signals to electronic and electrical equipment.

Please refer to FIG. 3 , which is a schematic diagram of a second embodiment of the wireless transmission system shown in FIG. 1 . As shown in Figure 3, in another embodiment of the present invention, the power supply unit 121 of the wireless signal output unit 120 may not include an AC input unit 1211, and the step-down circuit 1212 of the power supply unit 121 may be directly electrically connected to the power output unit 110 The AC input unit 111 in the battery can take power from the power output unit 110 .

Please refer to FIG. 4 , which is a schematic diagram of a third embodiment of the wireless transmission system shown in FIG. 1 . As shown in Figure 4, in another embodiment of the present invention, the wireless signal output unit 120 can be directly connected to the output end of the high voltage circuit 112 of the power output unit 120, that is, the power supply unit 121 of the wireless signal output unit 120 does not include AC input unit 1211 , the step-down circuit 1212 of the power supply unit 121 can be directly electrically connected to the voltage stabilizing device 122 in the power output unit 110 to obtain power from the power output unit 110 . Of course, the wireless signal output unit 120 can also be directly connected to the low-voltage circuit 112 of the power output unit 120, for example, the wireless signal output unit 120 is directly connected to the output end of the rectification and filtering circuit 1121 or the rectification and filtering circuit 1132, or connected to a voltage stabilizer 1122 or the output end of the voltage regulator 1133, which is also a wireless transmission system 100 for wirelessly transmitting electric energy and signals to electronic and electrical equipment, which includes: an electric energy generating device 1102, which wirelessly provides electric energy to electronic and electrical equipment; and The wireless signal processing device 122 transmits signals to the electronic and electrical equipment in a wireless manner. The power generating device 1102 and the wireless signal processing device 122 are connected to a power supply device (not shown) connected to an AC mains to form a power supply circuit.

In an embodiment, the power supply device includes the above-mentioned power supply unit 1101 and power supply unit 121 , and the specific composition and connection relationship of the power supply unit 1101 and the power supply unit 121 are consistent with the above-mentioned embodiment.

The wireless transmission system disclosed in the present invention can not only use the power output unit 110 to wirelessly supply power to common household appliances, but also can integrate the power output unit 110 and the wireless signal output unit 120 for wireless power supply of household appliances, and use the wireless signal output The unit 120 outputs various signals to these household appliances, and there is no need for wired connections between household appliances and their signal transmission devices, so that household appliances can realize wireless power supply and wireless connection to the greatest extent, greatly expanding the use range of these household appliances , making it more convenient for people to use. In addition, since the wireless signal output unit 120 has the anti-electromagnetic interference unit 1214 , it can prevent the electromagnetic signal in the power output unit 110 from interfering with the normal operation of the wireless signal output unit 120 .

The above description is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. Anyone familiar with this field Those skilled in the art, without departing from the scope of the technical solution of the present invention, may use the technical content disclosed above to make some changes or modify them into equivalent embodiments with equivalent changes, but as long as they do not depart from the technical solution of the present invention, the Technical Essence Any simple modifications, equivalent changes and modifications made to the above embodiments still fall within the scope of the technical solution of the present invention.

Claims (14)

1. A wireless transmission system for wirelessly transmitting electric energy and signals to electrical and electronic equipment, comprising: An electrical energy generating device for wirelessly providing electrical energy to electrical and electronic equipment; and A wireless signal processing device transmits signals to the electrical and electronic equipment in a wireless manner, and the power generating device and the wireless signal processing device are respectively connected to a power supply device connected to AC mains to form a power supply circuit. 2. The wireless transmission system according to claim 1, wherein the power supply device comprises: a first power supply unit, the output end of the first power supply unit is connected to the electric energy generating device; and A second power supply unit, the output terminal of the second power supply unit is connected with the wireless signal processing device. 3. The wireless transmission system according to claim 2, characterized in that: the first power supply unit comprises: an AC input unit connected to the AC mains; and A power supply unit, the input end of which is electrically connected to the AC input unit, and the output end is connected to the electric energy generating device; The second power supply unit is connected to the AC input unit to obtain power from the AC input unit, or connected to the power supply unit to obtain power from the power supply unit. 4. The wireless transmission system according to claim 3, characterized in that: the power output device comprises: A control unit is electrically connected to the power supply unit, and the control unit controls and generates a frequency signal having a main oscillation frequency; and A power output circuit is electrically connected with the control unit, the power output circuit generates a power signal according to the frequency signal, and transmits the power signal to the electronic and electrical equipment. 5. The wireless transmission system according to claim 4, characterized in that: the control unit includes a control circuit and an oscillating circuit electrically connected, the power supply unit outputs a DC voltage to the control circuit and the oscillating circuit respectively, and the control circuit sends A control signal is sent to the oscillating circuit, and the oscillating circuit generates the frequency signal according to the control signal. 6. The wireless transmission system according to claim 5, wherein the power supply unit comprises: A high-voltage circuit, the input end of which is electrically connected to the AC input unit, and the output end is electrically connected to the oscillating circuit. The high-voltage circuit converts the output of the AC power supply into a high-voltage DC voltage and outputs it to the oscillating circuit; and A low-voltage circuit, whose input end is electrically connected to the AC input unit, and whose output end is electrically connected to the control circuit, the low-voltage circuit converts the AC mains power into a low-voltage DC voltage and outputs it to the control circuit. 7. The wireless transmission system according to claim 5, wherein the power supply unit comprises: A high-voltage circuit, the input end of which is electrically connected to the AC input unit, and the output end is electrically connected to the oscillating circuit. The high-voltage circuit converts the output of the AC power supply into a high-voltage DC voltage and outputs it to the oscillating circuit; and A low-voltage circuit, the input end of which is electrically connected to the output end of the high-voltage circuit, and the output end is electrically connected to the control circuit. The low-voltage circuit converts the high-voltage DC voltage output by the high-voltage circuit into a low-voltage DC voltage and outputs it to the control circuit . 8. The wireless transmission system according to claim 6 or 7, characterized in that: the high voltage circuit comprises: a rectifying and filtering circuit for converting the AC mains into the high-voltage DC voltage; and A voltage stabilizer is electrically connected with the rectification filter circuit to stabilize the high voltage DC voltage. 9. The wireless transmission system according to claim 8, characterized in that: the low-voltage circuit comprises: A step-down circuit, connected to the AC input unit, performs step-down processing on the AC mains to generate a low-voltage AC voltage; a rectifying and filtering circuit connected to the step-down circuit to convert the low-voltage AC voltage into the low-voltage DC voltage; and A voltage stabilizer is electrically connected with the rectification and filtering circuit to stabilize the low-voltage DC voltage. 10. The wireless transmission system according to claim 3, characterized in that: the wireless signal processing device comprises: a control board, electrically connected to the second power supply unit, for receiving the low-voltage DC voltage generated by the second power supply unit, and controlling the operation of the wireless signal processing device; A signal processor, electrically connected to the control board, used to receive and process weak current signals, and transmit the weak current signals to the modulator; a modulator, electrically connected to the control board and the signal processor, for modulating the signal received from the signal processor to generate the wireless signal; and A wireless signal output device, electrically connected with the modulator, is used to output the wireless signal to the electronic and electrical equipment. 11. The wireless transmission system according to claim 10, wherein the second power supply unit comprises: a step-down circuit for stepping down the input voltage of the second power supply unit to generate a low-voltage AC voltage; A rectification and filtering circuit, electrically connected to the step-down circuit, to convert the low-voltage AC voltage into the low-voltage DC voltage; An anti-electromagnetic interference unit, electrically connected to the rectification and filtering circuit, used to prevent signal transmission from being interfered by magnetic interference; and A voltage stabilizer is used for stabilizing the low voltage DC voltage. 12. The wireless transmission system according to claim 11, wherein the step-down circuit of the second power supply unit is connected to the AC input unit or the power supply unit of the first power supply unit. 13. The wireless transmission system according to claim 11, wherein the anti-electromagnetic interference unit is an LC filter or a notch network circuit. 14. The wireless transmission system according to claim 11, wherein the second power supply unit further comprises an AC input unit, and the AC input unit is connected to the input terminal of the step-down circuit.

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