Frequency modulation transmitter device based on Bluetooth communication

A FM transmitter and Bluetooth communication technology, applied in the circuit field, can solve the problems of short service life, high noise of the receiver, waste of electric energy, etc., and achieve the effect of reducing the waste of electric energy

Active Publication Date: 2020-02-21
FUJIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 1. All the circuits are switched on once the machine is turned on, resulting in a waste of electric energy;
[0004] 2. The signal field strength is unstabl

Method used

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  • Frequency modulation transmitter device based on Bluetooth communication
  • Frequency modulation transmitter device based on Bluetooth communication
  • Frequency modulation transmitter device based on Bluetooth communication

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Embodiment Construction

[0019] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings.

[0020] figure 1 It is a circuit block diagram of a FM transmitter device based on Bluetooth communication according to the present invention; figure 2 It is another circuit block diagram of a FM transmitter device based on Bluetooth communication according to the present invention; image 3 It is a specific circuit connection schematic diagram of a FM transmitter device based on Bluetooth communication according to the present invention. The following combination Figure 1-Figure 3 to describe.

[0021] A FM transmitter device based on bluetooth communication, comprising:

[0022] Mobile phone comes with bluetooth communication transceiver module 1, HC-05 bluetooth communication transceiver module 2, STC89C52 single chip microcomputer signal processing circuit 3, power electronic switch control circuit 4...

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Abstract

The invention discloses a frequency modulation transmitter device based on Bluetooth communication. The mobile phone comprises a built-in Bluetooth communication transceiving module of the mobile phone, the invention discloses an HC-05 Bluetooth communication transceiver module. The invention discloses an STC89C52 single-chip microcomputer signal processing circuit. Power supply electronic switchcontrol circuit, third-stage power amplifier, the system comprises a final-stage power amplifier, a first-stage power amplifier, a second-stage power amplifier, an automatic gain AGC control circuit,a delay AGC control circuit, an MIC audio amplifier or external audio signal, a voltage-controlled oscillation and frequency modulation circuit, an OP07 active amplification circuit, an MC145152-2 frequency division and phase discrimination circuit and an MC12022AP prescaler, wherein the MIC audio amplifier or the external audio signal outputs a signal to the voltage-controlled oscillation and frequency modulation circuit; the voltage-controlled oscillation and frequency modulation circuit outputs signals to the MC12022AP prescaler and the first-stage power amplifier; and the MC12022AP prescaler outputs a signal to the MC145152-2 frequency division and phase discrimination circuit.

Description

technical field [0001] The invention relates to the field of circuits, in particular to a bluetooth-based frequency modulation transmitter device. Background technique [0002] There are problems with FM transmitters currently available in the market: [0003] 1. All the circuits are switched on once the machine is turned on, resulting in a waste of electric energy; [0004] 2. The signal field strength is unstable. When the signal field strength drops, the receiver will be noisy. [0005] 3. Most of them adopt the traditional push-pull switch, which has a short service life. Contents of the invention [0006] The object of the present invention is a FM transmitter device based on bluetooth communication, which can reduce the waste of electric energy. [0007] For realizing above-mentioned purpose of the invention, technical scheme of the present invention is: [0008] A FM transmitter device based on bluetooth communication, comprising: [0009] Mobile phone come...

Claims

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Application Information

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IPC IPC(8): H04B1/04H04B5/02
CPCH04B1/04H04B5/02H04B2001/0416H04B2001/0491
Inventor 林德耀黄雪红
Owner FUJIAN UNIV OF TECH
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