Wireless make device having no need of using battery and its transmission method
A wireless microphone and transmission method technology, applied in the direction of sensors, electrical components, sensor parts, etc., can solve the problems of wireless microphones that cannot be reduced in size and weight, short power supply duration, and need to be replaced regularly, so as to increase power supply duration, The effect of reducing size and weight and enhancing convenience
Inactive Publication Date: 2007-03-07
IND TECH RES INST
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Problems solved by technology
[0004] Most of the wireless microphones currently on the market use dry batteries as the source of power supply. Due to the weight and volume of the dry batteries themselves, the size and weight of the wireless microphone cannot be reduced, or there are problems such as the need for wire winding for the attached wireless microphone 2.
The attached wireless microphone 2 also has a variant, that is, a button mercury battery is used, so that the sound receiver 21 and the body 22 can be directly connected without wires, and the attached wireless microphone 2 can be directly attached to the coat to achieve The purpose of reducing the volume is small, but the mercury battery is not easy to obtain, the power supply is short, and it has environmental protection problems, and it needs to be replaced regularly, which causes inconvenience in use.
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[0044] The present invention will also be described in further detail in conjunction with the accompanying drawings:
[0045] The principle of the present invention is to use radio frequency bar code marking method to provide power source. Radio frequency barcode marking technology has been widely used in warehouse management and personnel control. Related patents include Taiwan Publication Nos. 490640 and 424210. The principle of its function is as follows. Taking personnel control as an example, there will be a sensor installed at the control point such as the gate or the door of the vault. The sensor emits electromagnetic waves. The personnel carry a control card. When the personnel need to enter and exit, the control card When approaching the sensor, the electromagnetic wave emitted by the sensor is converted into electrical energy, and the identification data built in the control card is transmitted to the sensor for identification to control access.
[0046] Please refe...
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The invention relates to a kind of wireless microphone device and the transmitting method. The device includes a microphone part, it also includes: a circuit which is made up of one or several components and which can receive the ether wave signal and sound signal and transmit output signal; and a power supplying unit, which converts the ether wave signal into electricity energy, in order to supply the electricity energy needed by above components; and a processing part which is used to transmit the ether wave signal and receive the output signal, and demodulates and amplifies the output signal; the method includes following steps: a, it transmits the ether wave signal through the processing device; b, uses the antenna to receive the ether wave signal; c, changes the ether wave signal to electricity energy type which can be used by microphone through the power supplying unit; d, after the microphone takes the sound signal, it transmits them to the processing device.
Description
technical field [0001] The present invention relates to a battery-free wireless microphone device and a transmission method, in particular to a wireless microphone device and a transmission method that use a radio frequency identifying tag to provide power. Background technique [0002] With the popularization of technology, the application of wireless microphones is becoming more and more extensive, and its existence can be seen in many occasions such as classrooms, stages, and KTV. Especially with the development of science and technology and the advancement of wireless transmission technology, the quality of wireless microphones has been greatly improved, coupled with its ease of use, it is gradually replacing wired microphones. [0003] There are currently two types of wireless microphones on the market, one is a handheld wireless microphone 1 and the other is an attached (hidden) wireless microphone 2 . Hand-held wireless microphone 1 is commonly used in occasions such...
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IPC IPC(8): H04R1/00
Inventor 童建凡
Owner IND TECH RES INST