CN210634452U - But auto-control volume's car horn controlling means - Google Patents

Abstract

The utility model relates to the technical field of automobile electronic control horns, and provides an automobile horn control device that can automatically adjust the volume, aiming at solving the problem that the existing horns are ordinary horns with constant volume, which cannot meet the requirements of different external environments and different vehicle motion states. And when different drivers whistle action, whistle at different volume, so as to achieve reasonable reduction of horn volume to reduce noise pollution without affecting the warning effect, including signal detection system, control system and execution system, the said The signal detection system includes a light sensor, a noise sensor, a wheel speed sensor, a throttle position sensor, a steering wheel angle sensor and a horn whistle detection circuit; the control system is used to receive and process various sensor information; the execution system includes a horn whistle flute control circuit and horn. The utility model is especially suitable for reasonably reducing the loudspeaker volume without affecting the warning effect, and has high social use value and application prospect.

Description

But auto-control volume's car horn controlling means

Technical Field

The utility model relates to an automotive electronics control loudspeaker technical field, concretely relates to but car horn controlling means of automatically regulated volume.

Background

The automobile horn plays an important warning role in automobile running. The volume of the automobile loudspeaker can be automatically adjusted according to the internal and external environmental conditions of the automobile, so that a good warning effect can be achieved under different conditions, and meanwhile, the noise interference of the loudspeaker is reduced as much as possible.

These cases mainly include the following three aspects: the external environment of the running automobile, the motion state of the automobile and the action of the driver for operating the horn.

The existing horn is a common horn with constant volume, and cannot meet the requirements that different automobile motion states (speed, steering, accelerating and starting) and different horn-sounding actions (horn-sounding duration and frequency) of drivers in different external environments (different illumination and noise conditions) are performed, and horns are sounded at different volumes, so that the condition that the horn volume is reasonably reduced to reduce noise pollution under the condition that the warning effect is not influenced is realized. Therefore, the automobile horn control device capable of automatically adjusting the volume is provided.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides a not enough to prior art, the utility model provides a but auto-control volume's car horn controlling means has overcome the not enough of prior art, reasonable in design, compact structure aims at solving current loudspeaker and is the invariable ordinary loudspeaker of volume, can not satisfy at different external environment, and different automobile motion state and different drivers are whistling when the action to the volume of difference is whistling, thereby realizes rationally reducing the problem of loudspeaker volume in order to reduce noise pollution under the condition that does not influence warning effect.

(II) technical scheme

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes:

an automobile horn control device capable of automatically adjusting volume comprises a signal detection system, a control system and an execution system, wherein the signal detection system comprises an illumination sensor, a noise sensor, a wheel speed sensor, a throttle position sensor, a steering wheel corner sensor and a horn whistle detection circuit, the illumination sensor is used for detecting the external illumination intensity, the noise sensor is used for detecting the external noise intensity, the wheel speed sensor is used for detecting the real-time running speed, the throttle position sensor is used for detecting the acceleration action of an automobile, the steering wheel corner sensor is used for detecting the steering signal of the automobile, and the horn whistle detection circuit is used for detecting the duration and the frequency of pressing a horn button by a driver;

the control system is used for receiving and processing various sensor information, calculating reasonable loudspeaker control volume after processing, and generating corresponding control signals;

the execution system comprises a horn whistle control circuit and a horn, and is used for receiving the control signal generated by the control system and controlling the horn to whistle with different volumes through the horn whistle control circuit.

Preferably, the influence factors of the automatic horn volume adjustment include three aspects of external environment, automobile motion state and driver operation action.

Preferably, the influence of the external environment on the volume of the loudspeaker comprises external illumination intensity and external noise sound intensity, and the external environment signal is acquired through the illumination sensor and the noise sensor.

Preferably, the influence of the automobile motion state on the horn volume comprises four states of automobile driving speed, steering, acceleration and starting, and the automobile motion state is acquired through a wheel speed sensor, a throttle position sensor and a steering wheel rotation angle sensor.

Preferably, the influence of the driver operation action on the volume of the horn comprises the frequency and the duration of pressing a horn button, and the driver operation action is collected through a horn whistle detection circuit.

Preferably, the horn whistling control circuit controls the horn to work at a certain voltage through the field effect tube according to the horn volume calculated by the control system and a corresponding control signal, so that different whistling volumes are generated.

(III) advantageous effects

The embodiment of the utility model provides a but car horn controlling means of automatically regulated volume possesses following beneficial effect:

the utility model discloses can carry out automatically regulated according to the external environment condition in the car, thereby can both play good warning effect under the different situation, in different external environment (different illumination, under the noise condition), different automobile motion state (speed of a motor vehicle, turn to, with higher speed, when starting) and different drivers whistle the action (when whistling with the frequency), can whistling with the volume of difference, thereby can rationally reduce loudspeaker volume with noise pollution abatement under the condition that does not influence warning effect, play better early warning effect when the car goes simultaneously.

Drawings

FIG. 1 is a block diagram of the present invention;

FIG. 2 is a circuit diagram of a middle horn whistling detection circuit of the present invention;

fig. 3 is a circuit diagram of the control circuit for whistling of the middle horn.

Detailed Description

The invention will be further described with reference to the following figures 1-3 and examples:

an automobile horn control device capable of automatically adjusting volume is shown in fig. 1 and comprises a signal detection system, a control system and an execution system.

The signal detection system comprises an illumination sensor, a noise sensor, a wheel speed sensor, a throttle position sensor, a steering wheel corner sensor and a horn whistle detection circuit:

the illumination sensor is used for detecting the intensity of external illumination;

the noise sensor is used for detecting the sound intensity of external noise;

the wheel speed sensor is used for detecting the real-time running speed;

the throttle position sensor is used for detecting the acceleration action of the automobile;

the steering wheel angle sensor is used for detecting a steering signal of an automobile;

the horn whistle detection circuit is used for detecting the duration and the frequency of pressing a horn button by a driver.

The control system is used for receiving and processing various sensor information, calculating reasonable loudspeaker control volume after processing, and generating corresponding control signals.

The execution system comprises a horn whistle control circuit and a horn, and is used for receiving the control signal generated by the control system and controlling the horn to whistle with different volumes through the horn whistle control circuit.

The influence factors of the loudspeaker volume control are divided into three aspects of an external environment, an automobile motion state and a driver operation action, the three aspects are synchronously carried out in real time, and finally the actual loudspeaker volume control is the synthesis of all the influence factors.

External environment includes external illumination intensity and external noise sound intensity to the influence of loudspeaker volume, external environment signal gathers through illumination sensor and noise sensor: when the illumination is strong and the noise is large, the volume of the horn is properly increased during whistling; otherwise, it is decreased.

The influence of the automobile motion state on the horn volume comprises four states of automobile driving speed, steering, acceleration and starting, wherein the automobile motion state is acquired through a wheel speed sensor, a throttle position sensor and a steering wheel corner sensor:

① the speed of the automobile is detected by the speed sensor in real time, the higher the speed of the automobile, the higher the volume of the horn is, the larger the volume of the horn is, otherwise, the volume of the horn is reduced;

② the steering wheel angle sensor and the speed sensor of the car detect the steering wheel angle (absolute value) and the speed in real time, when the steering wheel angle is larger and the speed is higher, it shows that the car direction changes more intensely, the volume of the horn is increased properly when whistling, otherwise, it is decreased;

③ the throttle position sensor of the automobile detects the opening of the throttle in real time, the larger the change rate of the throttle opening (when the opening is increased), the faster the automobile accelerates, the volume of the horn is properly increased when whistling, otherwise, the volume is decreased;

④ the speed of the vehicle is detected by the speed sensor of the vehicle wheel, when the speed of the vehicle is increased from zero, it shows that the vehicle is changed from a static state to a moving state, and the volume of the horn is increased properly when whistling to improve the safety during starting.

The influence of driver's operation action to the loudspeaker volume includes frequency and the length of time of pressing the loudspeaker button, driver's operation action is gathered through loudspeaker detection circuitry that whistles: detecting the duration and frequency of the button pressed by the driver through a horn whistle detection circuit, wherein the longer the duration and the higher the frequency of the button pressed by the driver are, the volume of the horn is properly increased; otherwise, it is decreased.

As shown in fig. 2, the horn button K is connected to the power ground GND, one end of the resistor R1 is connected to the +5V power supply, and the other end is connected to the horn button K and the port P1.1 (the input port of the chip in the control system). When a driver presses a horn button (switch) K, the horn button (switch) K is closed, and a port P1.1 outputs a low level signal to a singlechip in a control system; when the driver does not press the horn button, the horn button (switch) K is switched off, and the port P1.1 outputs a high level signal to a singlechip in the control system. The singlechip can calculate the pressing time length of the horn button K and the pressing frequency of the horn button K by combining the signal with an internal timer.

As shown in fig. 3, the horn SPK is connected to a +12V power supply, the drain D of the fet Q1 is connected to the horn SPK, the source S is grounded to GND, the gate G is connected to the resistors R2 and R3, respectively, the resistor R3 is grounded to GND, and the resistor R2 is connected to the port P1.2 (output port of the chip microcomputer in the control system). As mentioned above, the control system calculates the volume of the corresponding horn according to the external environment, the motion state of the vehicle, and the operation action of the driver, and finally determines the voltage value to be applied to the horn, and the voltage value is realized by the PWM (pulse width modulation) signal output from the port P1.2 of the single chip microcomputer.

The method specifically comprises the following steps: when detecting that the port P1.1 is a low level signal, indicating that a driver presses a horn button K, therefore, the port P1.2 outputs a PWM signal with a certain duty ratio; under the action of the signal, the field effect transistor Q1 is turned on and off alternately, so that a certain working voltage is applied to the horn SPK, and the horn is operated at a certain volume, wherein the volume depends on the duty ratio of the PWM signal.

According to the utility model discloses but auto-control volume's car horn controlling means, can be according to external environment, car self motion state and driver whistle action automatically regulated volume size, under different external environment (different illumination, the noise condition), when different car motion state (speed of a motor vehicle, turn to, with higher speed, starting) and different drivers whistle action (when whistling time and frequency), can whistle with the volume of difference, thereby can rationally reduce the loudspeaker volume with noise pollution abatement under the condition that does not influence warning effect.

The embodiment of the present invention discloses a preferred embodiment, but not limited thereto, and those skilled in the art can easily understand the spirit of the present invention according to the above embodiment, and make different extensions and changes, but do not depart from the spirit of the present invention, all of which are within the protection scope of the present invention.

Claims (6)

1. a car horn control device that can automatically adjust volume, is characterized in that, comprises signal detection system, control system and execution system, and described signal detection system comprises light sensor, noise sensor, wheel speed sensor, throttle position sensor, A steering wheel angle sensor and a horn whistle detection circuit, the light sensor is used to detect the intensity of external light, the noise sensor is used to detect the sound intensity of external noise, the wheel speed sensor is used to detect the real-time driving speed, and the throttle valve The position sensor is used to detect the acceleration signal of the vehicle, the steering wheel angle sensor is used to detect the steering signal of the vehicle, and the horn whistle detection circuit is used to detect the duration and frequency of the driver pressing the horn button; The control system is used for receiving and processing various sensor information, and after processing, calculates a reasonable loudspeaker control volume, and generates corresponding control signals; The execution system includes a horn whistle control circuit and a horn, which are used for receiving control signals generated by the control system, and through the horn whistle control circuit to control the horn to whistle at different volumes. 2. a kind of car horn control device that can automatically adjust volume as claimed in claim 1, it is characterized in that: the influence factor that described control system generates control signal comprises three aspects of external environment, vehicle motion state, driver's operation action . 3. a kind of car horn control device that can automatically adjust the volume as claimed in claim 2, it is characterized in that: the influence of described external environment to horn volume comprises external light intensity and external noise sound intensity, and described external environment signal passes through Light sensor and noise sensor are collected. 4. a kind of car horn control device that can automatically adjust volume as claimed in claim 2, it is characterized in that: the influence of described car motion state to horn volume comprises four kinds of states of car speed, steering, acceleration and starting, so The vehicle motion state is collected by wheel speed sensor, throttle position sensor and steering wheel angle sensor. 5. The car horn control device with an automatically adjustable volume as claimed in claim 2, wherein the influence of the driver's operation action on the horn volume comprises the frequency and duration of pressing the horn button, and the driver The operation action is collected by the horn whistle detection circuit. 6. a kind of car horn control device that can automatically adjust the volume as claimed in claim 1, it is characterized in that: described horn whistle control circuit calculates according to the horn volume size and corresponding control signal of the control system, through the field effect tube Control the horn to work with a certain voltage, thereby producing different whistle volume.

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