CN205706401U

CN205706401U - Plain type backup buzzer

Info

Publication number: CN205706401U
Application number: CN201620627398.6U
Authority: CN
Inventors: 曹洪波
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-06-21
Filing date: 2016-06-21
Publication date: 2016-11-23
Anticipated expiration: 2026-06-21

Abstract

This utility model provides a kind of plain type backup buzzer, including speaker, and the circuit board being connected with speaker.Power module, detection module, main control module and the driving module connected successively is installed on described circuit board；And being also associated with diode between power module and detection module, this detection module is the voltage transformer with variable circuit；This main control module uses single-chip microcomputer U1；This driving module outfan is connected to speaker；Described diode includes the anti-reverse diode D1 and Zener diode D2 of parallel connection；At least two current-limiting resistance R3, R4 and a filter capacitor C3 it is provided with on described variable circuit；This utility model simple in construction, it is easy to accomplish, it is suitable for producing in enormous quantities, stability is high, can guarantee that the stability of the reverse alarming signal that backup buzzer sends, advantageously reduces the cost of whole backup buzzer.

Description

Plain type backup buzzer

Technical field:

This utility model belongs to electric electroacoustic warning device, relates to mobile unit technical field, specifically refers to a kind of simple Formula backup buzzer.

Background technology:

Backup buzzer, as automobile safe component, plays warning function in reversing process, to guarantee traffic safety. Common backup buzzer predominantly organic tool horn, electromagnetic horn formula two kinds.The most any type, its structure is the most more Complexity, especially plays the wiring board of control action, and not only rigorous degree is high, and it is intricate that cabling is laid, and use Being analog circuit, speaker can only be with fixing frequency sounding alarm, and it is inflexible to program, intelligent not, and components and parts are numerous, Assemble and bother very much, be short of stability, the most often break down.

Utility model content:

For the shortcoming existing for background technology, this utility model carries out targeted design, and then provides one design new The plain type backup buzzer of grain husk, uses all-electronin component structure, and service life is considerably beyond general mechanical horn formula report Alert device.

This utility model be the technical scheme is that a kind of plain type backup buzzer, structure bag by realizing its purpose Include speaker, and the circuit board being connected with speaker.Power module, the detection connected successively is installed on described circuit board Module, main control module and driving module；Described power module input is connected to the battery of vehicle, and power module outlet is even It is connected to detection module, between power module and detection module, is also associated with diode；Described detection module is with variable The voltage transformer of circuit；Described main control module uses single-chip microcomputer U1；Described driving module outfan is connected to speaker.

The measure taked further is: described diode includes anti-reverse diode D1 and the Zener diode of parallel connection D2, the most anti-reverse diode D1 use 1N4007 model, and Zener diode D2 uses 5V1 model.

Preferably, described variable circuit is provided with at least two current-limiting resistance R3, R4 and a filter capacitor C3.

Compared with prior art, this utility model passes through so to design the advantage being had and feature is:

Single-chip microcomputer control technology is introduced wherein so that the programming realization of main control module is intelligent, can be according to different vehicle Vehicle condition be designed, the circuit structure after optimization is the simplest, effectively reduces cost, have while reducing a large amount of components and parts Compact, cheap advantage, eliminate the frame for movement of signals collecting；Significantly reducing fault rate, functional reliability is strong.

The supply voltage accessed is controlled by detection module in real time, and no matter input is that high level or low level all can be steady Fixed output, it is simple to universal, it is adaptable to the installation of various vehicles and use, it is ensured that traffic safety.

Accompanying drawing illustrates:

Fig. 1 is block diagram of the present utility model；

Fig. 2 is circuit theory diagrams of the present utility model.

In figure, 1, speaker, 2, circuit board, 21, power module, 22, detection module, 23, main control module, 24, drive mould Block, 3, diode, 31, anti-reverse diode, 32, Zener diode.

Detailed description of the invention:

Below in conjunction with specific embodiments and the drawings, the utility model is described in further detail.

Shown in Fig. 1, Fig. 2, structure of the present utility model includes speaker 1, and the circuit board being connected with speaker 1 2.Power module 21, detection module 22, the main control module 23 connected successively is installed on described circuit board 2 and drives module 24；Described power module 21 input is connected to the battery of vehicle, and power module 21 outfan is connected to detection module 22, Diode 3 it is also associated with between power module 21 and detection module 22；Described detection module 22 is the electricity with variable circuit Pressure transformer；Described main control module 23 uses single-chip microcomputer U1；Described driving module 24 outfan is connected to speaker 1.

Described diode 3 includes the anti-reverse diode D1 (i.e. numbering 31 in Fig. 1) of parallel connection, and Zener diode D2 (i.e. numbering 32 in Fig. 1), the most anti-reverse diode D1 use 1N4007 model, and Zener diode D2 uses 5V1 model.

At least two current-limiting resistance R3, R4 and a filter capacitor C3 it is provided with on described variable circuit.

By the anti-reverse diode D1 arranged and Zener diode D2 during work, single by giving again after voltage stabilization to 5.1V Sheet machine is powered, and ensures stability.

Below it is only preferred implementation of the present utility model, it is noted that above-mentioned preferred implementation should not regard For to restriction of the present utility model, protection domain of the present utility model should be as the criterion with claim limited range.For For those skilled in the art, without departing from spirit and scope of the present utility model, it is also possible to make some Improving and modify, these improve and modify and also should be regarded as protection domain of the present utility model.

Claims

1. a plain type backup buzzer, including speaker, and the circuit board being connected with speaker, it is characterised in that: institute Power module, detection module, main control module and the driving module connected successively is installed on the circuit board stated；Described power supply mould Block input is connected to the battery of vehicle, and power module outlet is connected to detection module, power module and detection module it Between be also associated with diode；Described detection module is the voltage transformer with variable circuit；Described main control module uses Single-chip microcomputer U1；Described driving module outfan is connected to speaker.

Plain type backup buzzer the most according to claim 1, it is characterised in that: described diode includes the anti-of parallel connection Reversal connection diode D1 and Zener diode D2, the most anti-reverse diode D1 use 1N4007 model, and Zener diode D2 uses 5V1 model.

Plain type backup buzzer the most according to claim 1, it is characterised in that: be provided with on described variable circuit to Few two current-limiting resistances R3, a R4 and filter capacitor C3.