CN213718216U - Sound level adjustable horn - Google Patents

Abstract

A sound level adjustable horn. In different environments, the sound level of the loudspeaker is fixed, and in some quiet environments, the generated noise is polluted greatly, so that physical and psychological health and comfort are influenced. The utility model discloses the constitution includes: the device comprises a sensor (1) for acquiring a vehicle speed signal or an environmental noise signal, a vehicle-mounted BCM (2) for outputting different trigger signals, a driving circuit (3) for adjusting the width ratio output by a horn driving circuit and controlling the current flowing through a coil, a horn coil (4) and a horn diaphragm (5); the sensor is electrically connected with the vehicle-mounted BCM, the BCM is electrically connected with the drive circuit, and the drive circuit is electrically connected with the horn coil. The utility model is used for the adjustable loudspeaker of sound level.

Description

Sound level adjustable horn

The technical field is as follows:

the utility model relates to a green loudspeaker.

Background art:

in different environments, the sound level of the loudspeaker is fixed, and in some quiet environments, the generated noise is polluted greatly, so that physical and psychological health and comfort are influenced.

The utility model has the following contents:

the utility model aims at providing a sound level adjustable loudspeaker.

The above purpose is realized by the following technical scheme:

a sound-level adjustable horn comprises a sensor for acquiring a vehicle speed signal or an environment noise signal, a vehicle-mounted BCM for outputting different trigger signals, a driving circuit for adjusting the width ratio of the output of a horn driving circuit and controlling the current flowing through a coil, a horn coil and a horn diaphragm;

the sensor is electrically connected with the vehicle-mounted BCM, the BCM is electrically connected with the drive circuit, and the drive circuit is electrically connected with the horn coil.

The sound level adjustable loudspeaker, drive circuit welding on the circuit board.

Has the advantages that:

1. the utility model discloses an acquire speed of a motor vehicle signal or ambient noise signal, loudspeaker are according to the trigger signal of difference, and the width ratio of adjustment loudspeaker drive circuit output, and then the electric current of control flow coil, the amplitude of final control diaphragm realizes volume control.

2. The utility model can adjust the volume of the loudspeaker according to the environmental noise signal, and reduce the noise pollution;

3. the utility model discloses a loudspeaker, can with whole car communication, realize sound level control.

Description of the drawings:

FIG. 1 is a schematic structural diagram of the utility model;

FIG. 2 is a schematic circuit diagram of the present invention;

in the figure: 1. a sensor; 2. carrying out vehicle-mounted BCM; 3. a drive circuit; 4. a horn coil; 5. a horn diaphragm.

The specific implementation mode is as follows:

example 1:

a sound level adjustable horn comprises a sensor 1 for acquiring a vehicle speed signal or an environment noise signal, a vehicle-mounted BCM2 for outputting different trigger signals, a driving circuit 3 for adjusting the width ratio of the output of a horn driving circuit and controlling the current flowing through a coil, a horn coil 4 and a horn diaphragm 5;

the sensor is electrically connected with the vehicle-mounted BCM, the BCM is electrically connected with the drive circuit, and the drive circuit is electrically connected with the horn coil.

Example 2:

according to the sound level adjustable loudspeaker of the embodiment 1, the driving circuit is welded on the circuit board.

Example 3:

a method of adjusting a sound level adjustable horn, the method comprising the steps of: the sensor gathers speed of a motor vehicle signal or surrounding ambient noise signal, feeds back the ambient noise signal of gathering to BCM, and according to the information that acquires, on-vehicle BCM outputs different trigger signal, and loudspeaker are according to different trigger signal, the width ratio of adjustment loudspeaker drive circuit output, and then the electric current of control flow through the coil, and the amplitude of final control diaphragm realizes volume control.

Claims (2)

1. A sound level adjustable loudspeaker is characterized in that: the sound level adjustable horn comprises a sensor for acquiring a vehicle speed signal or an environmental noise signal, a vehicle-mounted BCM for outputting different trigger signals, a driving circuit for adjusting the width ratio output by a horn driving circuit and controlling the current flowing through a coil, a horn coil and a horn diaphragm;

the sensor is electrically connected with the vehicle-mounted BCM, the BCM is electrically connected with the drive circuit, and the drive circuit is electrically connected with the horn coil.

2. The sound-level adjustable horn of claim 1, wherein: the driving circuit is welded on the circuit board.

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