Universal industrial alarm circuit and control method thereof

A control method and alarm technology, applied in the electronic field, can solve the problems of many drive units, unfavorable management and maintenance, high-frequency interference, etc.

Active Publication Date: 2019-12-03
YANBIAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the combination of WS-type products is in the form of switching power supply control chip + pulse power driver + single-chip microcomputer + pulse power amplifier, while the combination of WM and WV-type products is switching power supply control chip + pulse power driver + single-chip microcomputer + class D power amplifier , there are many drive units that need to be installed, which is not conducive to the management and maintenance in the later use process, and the circuit of the class D power amplifier is complicated and the price is high. Interference, affect the stability of the product

Method used

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  • Universal industrial alarm circuit and control method thereof

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Experimental program
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Effect test

Embodiment 1

[0044] See attached figure 1 As shown, a general-purpose industrial alarm circuit includes: a control unit, an amplification unit, a drive unit and a power supply unit;

[0045] The output port of the drive unit is connected to the input port of the control unit, the output port of the control unit is connected to the amplification unit, and the power supply unit is connected to the control unit;

[0046] The control unit is used to generate a PWM signal and control the driving unit to boost or lower the voltage. The driving unit is used to output the working voltage to the amplifying unit. The amplifying unit is used to amplify the PWM signal. The power supply unit is used to supply power to the control unit.

[0047] In a specific embodiment, the power supply unit includes: a diode D1, a voltage regulator U1, a voltage regulator U2, a capacitor C1, and a capacitor C2;

[0048] The anode of diode D1 is connected to port 2 of plug J1, port 1 of plug J1 is connected to one end...

Embodiment 2

[0072] Take the model of the single-chip microcomputer J4 as STC15W402AS as an example, the ADC inside the single-chip microcomputer J4 has a conversion accuracy of 10 bits, and the voltage value of V2 is 5V.

[0073] Embodiment 2 discloses a general-purpose industrial siren circuit control method, including a method for generating a PWM signal and a method for controlling output volume;

[0074] The method for generating the PWM signal is realized by the control unit, and the control method for the output volume is realized by the driving unit and the amplifying unit.

[0075] In a specific embodiment, the method for generating a PWM signal includes the following steps:

[0076] S1: Let the intersection of capacitor C8 and capacitor C7 in the control unit be point A, R5 and R6 of the control unit satisfy R5=3R6, and the DC bias voltage of point A is Among them, V2 is the power supply voltage output by the voltage output terminal 2 of the power supply unit, and the AC input ...

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PUM

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Abstract

The invention discloses a universal industrial alarm circuit and a control method thereof. The universal industrial alarm circuit comprises a driving unit, a control unit, an amplifying unit and a power supply unit. The control method comprises a PWM signal generating method and an output volume adjusting method. According to the control method, a boost-buck driver, a single-chip microcomputer anda working voltage variable pulse power amplifier are combined, and no special switching power chip or D-type power amplifier is used in order to realize a universal industrial alarm integrating a WStype, a WM type and a WV type, so that the cost is lowered; the circuit is simplified; and the stability and the reliability are enhanced. Meanwhile, the product kinds are reduced, so that managementand maintenance are facilitated, and the product competitiveness can be improved greatly.

Description

technical field [0001] The invention relates to the field of electronic technology, and more specifically relates to a general-purpose industrial alarm circuit and a control method thereof. Background technique [0002] At present, the existing industrial sirens are mainly divided into WS type (audio is a pulse waveform, such as alarm sound, ambulance sound, etc.), WM type (audio is an analog signal, emitting various music prompts), WV type (sound source It is an analog signal, the user can record the sound prompt tone) these three types. [0003] However, the combination of WS-type products is in the form of switching power supply control chip + pulse power driver + single-chip microcomputer + pulse power amplifier, while the combination of WM and WV-type products is switching power supply control chip + pulse power driver + single-chip microcomputer + class D power amplifier , there are many drive units that need to be installed, which is not conducive to the management a...

Claims

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Application Information

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IPC IPC(8): G05B19/042
CPCG05B19/0428G05B2219/24215
Inventor 金永镐许一男
Owner YANBIAN UNIV
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