Wireless data transmission control device based on DTMF (dual-tone multifrequency) technology
A wireless data transmission and control device technology, applied in transmission systems, interconnection devices, signal transmission systems, etc., to achieve low power consumption and small size
Pending Publication Date: 2018-05-15
XIAMEN INTRETECH
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Problems solved by technology
[0004] The purpose of the present invention is to solve the problems of the prior art. It proposes that the wireless control equipment in some areas has a poor network or cannot connect to the network, and uses the form of sound transmission to carry out wireless data transmission control, and proposes an economical, practical, low-power Wireless data transmission control device based on DTMF technology
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[0030] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer and clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention.
[0031] The embodiment of the present invention provides a wireless data transmission control device based on DTMF technology. The wireless data transmission control device includes a microphone interface (1) and a DTMF decoding chip (4) and an MCU module (5) packaged on a PCB board. , The PCB board is also provided with a USART interface (2); the USART interface (2) is connected to a module or device (30) containing the USART interface.
[0032] Packaged on the PCB board is also provided with a power interface (3), the power interface (3) can be connected ...
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The invention discloses a wireless data transmission control device based on a DTMF (dual-tone multifrequency) technology. The wireless data transmission control device comprises a microphone interface, a DTMF decoding chip and a MCU (microprogrammed control unit) module, wherein the DTMF decoding chip and the MCU module are packaged onto a PCB (printed circuit board); the PCB is also provided with a USART (universal synchronous asynchronous receiver transmitter) interface; the DTMF decoding chip is used for demodulating an analog electric signal transmitted by a microphone interface, and outputting a decimal digital code; the MCU module is used for receiving the decimal digital code demodulated by the DTMF decoding chip, and sending a corresponding program starting and / or action control signal; the corresponding program starting and / or action control signal sent out by the MCU module is sent to a module or equipment containing the USART interface via the USART interface, and the module or equipment containing the USART interface is used for receiving the signal to start the corresponding program and / or execute the control action. The wireless data transmission control device has the advantages that the wireless data transmission is controlled by the wireless control equipment in some area in a sound transmission way under the condition of poor network or connection failure ofthe network; the cost is low, the power consumption is low, and the like.
Description
Technical field [0001] The present invention relates to the field of wireless data transmission control, in particular to a wireless data transmission control device based on DTMF technology, which is suitable for wireless data transmission control of multifunctional electric control locks, shared smart bicycle locks, smart express delivery, building intercoms and other equipment . Background technique [0002] In some areas, wireless control equipment cannot be controlled through wireless transmission when the network is poor or the network cannot be connected. It is necessary to build independent network cards and routers or AP devices in these areas, and the control of different devices requires pairing control. [0003] DTMF (Dual Tone Multi Frequency) dual-tone multi-frequency signal consists of a high frequency group and a low frequency group. The high and low frequency groups each contain 4 frequencies. A high frequency signal and a low frequency signal are superimposed to ...
Claims
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IPC IPC(8): G08C23/02H04M7/12H04B11/00
CPCH04B11/00H04M7/1295G08C23/02
Inventor 杨连池何建章张国忠
Owner XIAMEN INTRETECH