CN201765242U - Combination meter whose backlight changes with vehicle speed - Google Patents

Abstract

The utility model provides a combined instrument with backlight changing with automobile speed, belonging to the technical field of automobiles. The utility model solves the problem that the existing combined instrument is not provided with an automobile speed warning function. The combined instrument with backlight changing with automobile speed comprises an instrument controller and an automobile speed sensor which is connected with the instrument controller, wherein the automobile speed sensor can detect automobile speed signals and can transmit the automobile speed signals to the instrument controller. A light emitting circuit which is connected with the instrument controller is arranged in the combined instrument. The instrument controller can conduct comparative analysis to the automobile speed signals received from the automobile speed sensor and can send different control signals to the light emitting circuit according to different results. The light emitting circuit can receive the control signals and can emit light with different colors according to the different control signals. The utility model has the advantages that the structure is simple, the use is convenient and intuitive and the combined instrument is provided with the automobile speed warning function.

Description

Combination meter whose backlight changes with vehicle speed

technical field

The utility model belongs to the technical field of automobiles and relates to a combination meter, in particular to a combination meter whose backlight changes with the vehicle speed.

Background technique

In today's rapid development of electronic products, automotive instrumentation has also undergone rapid changes. The function of the instrument is not only an indication, but the vehicle speed, speed, water temperature, fuel, etc. can be displayed through the combination instrument for the driver to understand the entire vehicle condition. At the same time, in order to facilitate the viewing of the information displayed on the instrument cluster, the instrument also uses a large number of LED lights, the backlight of the instrument panel, the backlight of the liquid crystal, and the signal indicator light. But the backlight of the current car instrument is monochrome, which only plays the role of lighting, and does not have the function of speed warning.

Contents of the invention

The purpose of the utility model is to solve the above-mentioned problems in the existing technology, and propose a combination instrument with a simple structure and whose backlight color can change with the change of the vehicle speed so as to have a vehicle speed warning function.

The purpose of this utility model can be achieved through the following technical proposals: a combination meter whose backlight changes with the speed of the vehicle, including an instrument controller and a vehicle speed sensor connected to the instrument controller, the vehicle speed sensor can detect the vehicle speed signal and convert the vehicle speed signal The meter controller is characterized in that: the combination meter is also provided with a light-emitting circuit connected to the meter controller, and the meter controller can compare and analyze the vehicle speed signal received from the vehicle speed sensor and according to different results Different control signals are sent to the light-emitting circuit, and the light-emitting circuit can receive the above-mentioned control signals and emit light of different colors according to different control signals.

The light-emitting circuit emits different colors of light for the backlight of the instrument. It not only plays the role of lighting, but also intuitively conveys some speed information to the driver through the difference in the color of the backlight.

In the aforementioned combination instrument whose backlight varies with vehicle speed, the instrument controller includes a signal input unit, a storage unit, a comparison unit and a signal output unit, and the signal input unit, the storage unit and the signal output unit are all connected to the comparison unit .

Some set vehicle speed information can be stored in the storage unit in advance. When the instrument controller receives the actual vehicle speed information from the vehicle speed sensor, the actual vehicle speed information is transmitted to the comparison unit through the signal input unit, and the comparison unit passes the actual vehicle speed received. The information is compared and analyzed with the previously set vehicle speed information stored in the storage unit, and a control signal is generated according to the comparison and analysis result and sent to the light-emitting circuit through the signal output unit.

In the aforementioned combination instrument whose backlight varies with vehicle speed, the light-emitting circuit includes several light-emitting units connected in parallel, and each light-emitting unit includes a protection resistor R and several light-emitting diodes, and the protection resistor R and the above-mentioned The instrument controller is connected, the cathode and anode of each light-emitting diode have the same direction and are connected in series, and the cathode is grounded, and the anode is connected in series with the protection resistor R. The light-emitting diodes on the same light-emitting unit emit light of the same color, and the light-emitting diodes of different light-emitting units can emit light of different colors.

The principle of the instrument controller to control the light-emitting circuit to emit different colors of light is as follows: When the instrument controller needs to control the light-emitting diode on a certain light-emitting unit to emit light according to the results of comparison and analysis, the instrument controller will give the light-emitting unit a high voltage at this time. At this time, the voltage added to the cathode and anode of each light-emitting diode is a forward voltage, and the light-emitting diode emits light; the instrument controller of other light-emitting units gives a low level, and the light-emitting diodes do not emit light.

In the above-mentioned combination instrument whose backlight changes with the speed of the vehicle, the light-emitting diodes are LED lights, and the LED lights include white LED lights, green LED lights, blue LED lights, yellow LED lights and red LED lights. The LED lights will emit corresponding light of different colors.

Different actual vehicle speeds detected by the vehicle speed sensor correspond to the LED lights on different light-emitting units. For example: the set speed information such as 0km/h, 60km/h, 80km/h, 100km/h and 120km/h is stored in the storage unit in advance, and the instrument controller will compare the actual speed information received from the speed sensor with the above The set speed information is compared and analyzed. If the comparison result is between 0 and 60km/h, the control white LED light will be on; if the vehicle speed is between 60km/h and 80km/h, the control green LED light will be on; if the vehicle speed When the vehicle speed is between 80km/h and 100km/h, control the blue LED light to be on; if the vehicle speed is between 100km/h and 120km/h, control the yellow LED light to be on; if the vehicle speed exceeds 120km/h, control the red LED light to be on. In this way, the color of the backlight of the combination meter will change with the change of the vehicle speed, and the driver can easily and intuitively know the current level of the vehicle speed by looking at the backlight color of the combination meter, and it has the function of vehicle speed warning.

Compared with the prior art, the combination meter is equipped with a light-emitting circuit, which can change with the change of vehicle speed, not only has the function of lighting, but also allows the driver to conveniently and intuitively see the color of the backlight of the combination meter. Learn about the current speed of the vehicle, with a speed warning function. The combined instrument has a simple structure, and is convenient and intuitive to use.

Description of drawings

Fig. 1 is a structural principle diagram of the utility model.

Detailed ways

The following are specific embodiments of the utility model and in conjunction with the accompanying drawings, the technical solution of the utility model is further described, but the utility model is not limited to these embodiments.

As shown in Figure 1, the combination instrument whose backlight changes with the vehicle speed includes an instrument controller, a vehicle speed sensor connected to the instrument controller, and a light-emitting circuit. The vehicle speed sensor can detect the vehicle speed signal and transmit the vehicle speed signal to the instrument controller. The instrument controller The vehicle speed signal received from the vehicle speed sensor can be compared and analyzed, and different control signals can be sent to the light-emitting circuit according to different results. The light-emitting circuit can receive the control signal and emit light of different colors according to the control signal.

The instrument controller includes a signal input unit, a storage unit, a comparison unit and a signal output unit, and the signal input unit, the storage unit and the signal output unit are all connected to the comparison unit.

The light-emitting circuit includes five groups of light-emitting units connected in parallel, each light-emitting unit includes a protection resistor R and n light-emitting diodes, n in this embodiment is 8, the protection resistor R is connected to the instrument controller, and 8 light-emitting diodes The cathode and anode of the diode have the same direction and are serially connected in series, the cathode is grounded, and the anode is connected in series with the protection resistor R. The light-emitting diodes are LED lights, and the LED lights on the first group of light-emitting units are all white LED lights L1, the second group is all green LED lights L2, the third group is all blue LED lights L3, and the fourth group is all Yellow LED lights L4, the fifth group is all red LED lights L5.

The working process and principle of the light emitting circuit in this embodiment are as follows:

The vehicle speed sensor detects the vehicle speed information in real time and transmits the information to the instrument controller. The instrument controller compares and analyzes the vehicle speed information with the previously set vehicle speed information, and then provides high level or low level respectively according to the judgment result. For each lighting unit in the lighting circuit. When the vehicle speed is between 0 and 60km/h, a high level is provided to the light-emitting unit where the white LED light L1 is located, and the white LED light L1 on it is turned on by a forward voltage, and a low level is provided to other light-emitting units , so that the directional voltage cannot be turned on, so it does not light up. At this time, the backlight color of the combination meter is white; similarly, when the vehicle speed is between 60km/h and 80km/h, control the green LED light L2; when the vehicle speed is 80km/h When the vehicle speed is between 100km/h and 100km/h, control the blue LED to light up L3; when the vehicle speed is between 100km/h and 120km/h, control the yellow LED to light up L4; when the vehicle speed exceeds 120km/h, control the red LED to light up L5. In this way, the color of the backlight of the combination meter will change with the change of the vehicle speed, and the driver can easily and intuitively know the current level of the vehicle speed by looking at the backlight color of the combination meter, and it has the function of vehicle speed warning.

The specific embodiments described herein are only examples to illustrate the spirit of the present invention. Those skilled in the technical field to which the utility model belongs can make various modifications or supplements to the described specific embodiments or adopt similar methods to replace them, but they will not deviate from the spirit of the utility model or go beyond the appended claims defined range.

Claims (4)

1. A combination meter whose backlight varies with the speed of the vehicle, comprising an instrument controller and a vehicle speed sensor connected to the instrument controller, the vehicle speed sensor can detect the vehicle speed signal and transmit the vehicle speed signal to the instrument controller, it is characterized in that: the There is also a light-emitting circuit connected to the instrument controller in the combined instrument, and the instrument controller can compare and analyze the vehicle speed signal received from the vehicle speed sensor and send different control signals to the light-emitting circuit according to different results. The light-emitting circuit can receive the above-mentioned control signal and emit light of different colors according to the difference of the control signal. 2. A kind of combination instrument whose backlight changes with vehicle speed according to claim 1, is characterized in that, described meter controller comprises signal input unit, storage unit, comparison unit and signal output unit, signal input unit, storage unit Both the signal output unit and the comparison unit are connected. 3. A combination instrument whose backlight varies with vehicle speed according to claim 1 or 2, characterized in that, said luminous circuit comprises several luminous units connected in parallel, each luminous unit comprises a protective resistor R and Several light-emitting diodes, the protection resistor R is connected to the above-mentioned instrument controller, the cathode and anode of each light-emitting diode are in the same direction, and the cathode is grounded after being connected in series, and the anode is connected in series with the protection resistor R, and the light-emitting diodes on the same light-emitting unit emit the same The LEDs of different light-emitting units can emit light of different colors. 4. A kind of combination instrument whose backlight varies with vehicle speed according to claim 3, characterized in that, said light-emitting diodes are LED lamps, and the LED lamps include white LED lamps, green LED lamps, blue LED lamps, yellow LED lamps, LED lights and red LED lights, LED lights of different colors will emit corresponding light of different colors.

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