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Electric horn adopting diode to carry out absorption of induced electromotive force on inductance coil and control method

A technology of induced electromotive force and inductive coil, which is applied in the direction of sensors, electrical components, transducer circuits, etc., can solve the problems of low reliability, high cost, and high drain voltage, and achieve good reliability, improved life, and no secondary The effect of breakdown

Pending Publication Date: 2017-09-12
HARBIN GOODTIME ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problems of high drain voltage, high cost and low reliability of traditional capacitors for absorbing induced electromotive force, and to provide a diode with long life, good reliability and low cost for absorbing induced electromotive force of inductance coils Electric horn and control method

Method used

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  • Electric horn adopting diode to carry out absorption of induced electromotive force on inductance coil and control method
  • Electric horn adopting diode to carry out absorption of induced electromotive force on inductance coil and control method

Examples

Experimental program
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Effect test

Embodiment 1

[0017] An electric horn in which a diode is used as an induction coil to absorb electromotive force, which is composed of: a terminal 6 which is fixedly connected to the coil frame 4 through a housing 5, and the terminal is connected to the wiring harness of the car body, so The housing and the diaphragm 3 are fixedly connected by a gland 2, a plastic shell 1 is installed on the gland, a circuit board is installed on the coil frame, and the circuit board includes a power circuit 8, a control circuit 7. The power circuit is electrically connected to the control circuit. The power circuit is composed of a switch 11, an inductor 10, and a diode 9. The diode is connected in parallel with the inductor, and the inductor The upper end of the inductor is connected to Vcc, the lower end of the inductor is connected to the switch, and the cathode of the diode is connected to the upper end of the inductor.

Embodiment 2

[0019] According to the diode described in embodiment 1 as an electric horn with induction electromotive force absorption, the control circuit includes a 555 chip 15, a resistor A, part number: 12, a resistor B, part number: 13 and a capacitor 14. The Vo pin on the 555 chip is connected to the switch, and the Vcc terminal of the power circuit is respectively connected to the resistor A, the Vcc pin on the 555 chip and the R lead on the 555 chip. The resistor A is connected to the resistor B and the DIS pin on the 555 chip, and the resistor B is connected to the TR pin on the 555 chip and the 555 chip. The THR pin on the chip is connected to one end of the capacitor, and the other end of the capacitor and the GND pin on the 555 chip and the switch are grounded respectively.

Embodiment 3

[0021] A method for controlling an electric horn using a diode as an induction coil to absorb electromotive force. The method includes the following steps: after power is turned on, the 555 chip generates a fixed frequency square wave drive signal to control the on and off of the switch. When it is turned on, there is current flow Pass the inductance coil to attract the diaphragm. When it is disconnected, no current flows through the inductance coil and the diaphragm is released. This makes a sound after reciprocating vibration. When the switch is off, the inductance coil generates an induced electromotive force, and the diode will be turned on instantly. Clamp the induced electromotive force to a low voltage to protect the switch.

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Abstract

An electric horn and a control method for absorbing electromotive force induced by a diode as an inductance coil. Using traditional capacitors to absorb induced electromotive force has high drain voltage, high cost and low reliability. The composition of the present invention includes: terminal, the terminal (6) is fixedly connected with the coil frame (4) through the housing (5), the terminal is connected with the wiring harness of the car body, and the housing and the diaphragm (3) are connected through the gland (2) ) is fixedly connected, the plastic shell (1) is installed on the gland, and the circuit board is installed on the coil frame. The circuit board includes a power circuit (8) and a control circuit (7). (11), an inductance coil (10) and a diode (9), the diode and the inductance coil are connected in parallel, the upper end of the inductance coil is connected to Vcc, the lower end of the inductance coil is connected to a switch, and the cathode of the diode is connected to the upper end of the inductance coil. The invention uses a diode as an electric horn for absorbing induced electromotive force of an inductance coil and a control method.

Description

Technical field: [0001] The invention relates to an electric horn, in particular to an electric horn in which a diode is used as an induction coil to absorb electromotive force and a control method. Background technique: [0002] Cars are equipped with horns to warn pedestrians and other vehicles to draw attention and ensure driving safety. The horn is divided into two types: air horn and electric horn according to the different sound power. The electric horn uses traditional capacitors to absorb the induced electromotive force, and the drain voltage is higher, the cost is also higher, and the reliability is low. Summary of the invention: [0003] The purpose of the present invention is to solve the problems of high drain voltage, high cost, and low reliability of traditional capacitors for induced electromotive force absorption, and to provide a diode with high life, good reliability and low cost for induced electromotive force absorption of inductance coils. Electric horn and c...

Claims

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Application Information

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IPC IPC(8): H04R3/00H04R1/02H04R27/00
CPCH04R3/007H04R1/02H04R27/00
Inventor 赵宏伟
Owner HARBIN GOODTIME ELECTRONICS
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