CN201812384U - Vehicle-mounted intelligent speed-limiting device - Google Patents

Abstract

A vehicle-mounted intelligent speed limiter, comprising a central processing unit (1), a GPS device (2), a display (3) and a vehicle-mounted power supply (9); the GPS device (2) sends a position and Speed information, the external environment perception sensor (5) sends the external environment perception signal to the central processing unit (1) through the A/D acquisition card (4), and the display (3) receives the image alarm information from the central processing unit (1) and sends out Sound alarm, the central processing unit (1) obtains the road speed limit information in the GIS software system according to the position information obtained by the GPS device (2), and utilizes the output signal of the external environment perception sensor (5) to analyze the road speed limit information Perform correction, compare the speed information obtained by the GPS device (2) with the corrected speed limit information, and judge whether the vehicle is in an overspeed state, thereby selecting whether to give an alarm to the driver and make the driver perform a deceleration operation.

Description

Vehicle intelligent speed limit device

technical field

The utility model relates to the field of automobile active safety, in particular to a vehicle-mounted intelligent speed limiting device. the

Background technique

At present, the speed limit thresholds used by traditional vehicle speeding alarm devices are preset and fixed speed values. In use, no matter how the external road environment changes, the same speed value is used to limit, and false alarms are often reported. . In the prior art, the application number is 03226688.X and the Chinese patent literature with the application number 200820062397.7 discloses such an automobile speeding alarm device, which adopts a preset, fixed limit threshold to monitor the speeding behavior of the driver. Although the constraint has a certain positive effect, because its speed threshold is fixed and cannot change with the change of the external road environment, false alarms are often reported, which has a negative impact on the driver and seriously affects driving safety. the

Therefore, in the prior art, there have been GIS-based speed-governing devices for automobiles, and the Chinese patent document with application number 200520026149.3 has disclosed such a speed-gating device for automobiles. This vehicle speed limit device based on GIS system uses GIS geographic information system to obtain the speed limit information of different road sections. question. However, its speed threshold cannot change with real external environment changes (including weather conditions, crowd density, traffic density, etc.), and the change of its limit speed threshold is still unitary. Secondly, it uses a vehicle speed sensor to collect the vehicle speed, which increases the complexity of the system. And this automobile speed limiting device just reminds and warns the driver's speeding behavior, and can not stop the driver's intentional speeding behavior. Therefore, the above-mentioned speed-limiting devices for automobiles all have functional limitations, and cannot improve the speeding behavior well, or even fail to achieve a real speed-limiting effect. the

Contents of the invention

The purpose of the utility model is to overcome the deficiencies of the prior art and provide a vehicle-mounted intelligent speed limiting device. the

The vehicle-mounted intelligent speed limiter according to the utility model comprises a central processing unit, a GPS device, a display and a vehicle-mounted power supply, and the GPS device comprises a GPS receiver and a GPS antenna; The sensor sends position and speed information, the external environment perception sensor sends the external environment perception signal to the central processing unit through the A/D acquisition card, the display receives and displays the image alarm information from the central processing unit and sends out a sound alarm information, and the central processing unit The processor is equipped with a GIS software system, and the central processor can use the GIS software system to obtain real-time speed limit information of various road sections, and can use the external environment perception sensor to judge the external environment information. The information acquires the road speed limit information in the GIS software system, and uses the output signal of the external environment perception sensor to correct the road speed limit information, compares the speed information obtained by the GPS device with the corrected road speed limit information, and judges whether the vehicle is in Overspeed status, so as to choose whether to give an alarm to the driver and make the driver slow down. the

Through this device, the GPS device is used to obtain the driving position and speed of the vehicle, and the information is transmitted through the serial port and the central processor. The external environment sensing sensor collects the external environment signal and sends it to the central processor for processing. , the system automatically and intelligently judges the speeding state of the vehicle. Moreover, the device adopts a GPS device instead of a vehicle speed sensor to directly obtain the real-time speed of the vehicle, and has a simple structure. Because the device adopts the external environment perception sensor to introduce the influence of the external environment on the speed limit threshold, its definition of the overspeed threshold is intelligent and flexible, rather than single and fixed. Therefore, the setting of the overspeed threshold is more accurate. Science, so as to effectively prevent the occurrence of speeding phenomenon and improve traffic safety. the

Preferably, the external environment perception sensor adopts a rain sensor, and the central processing unit analyzes and classifies the rain sensor signal collected by the A/D acquisition card, and divides the rainy environment into three categories: heavy rain, moderate rain and light rain. According to these three different rainy weather environments, the speed limit information in the GIS system is corrected to different degrees, so as to realize the intelligent speed limit. the

Preferably, the external environment sensing sensor adopts a photoelectric rain sensor. the

Preferably, the external environment perception sensor adopts a visibility sensor, and the central processing unit analyzes and classifies the visibility sensor signal collected by the A/D acquisition card, and divides the foggy environment into three categories: heavy fog, medium fog and light fog. According to these three different foggy environments, the speed limit information in the GIS system is corrected to different degrees, so as to realize intelligent speed limit. the

Preferably, the central processing unit also receives the accelerator opening signal from the electronic accelerator pedal, adopts different control strategies for the accelerator opening signal according to different driving states of the vehicle, and sends the processed signal to the engine ECU. For example, when the vehicle is not overspeeding, the central processing unit transmits the original throttle opening signal to the engine ECU without speed limit processing; The amount of fuel is reduced to slow down the vehicle and realize intelligent speed limit. the

Most preferably, there is a selection switch on the circuit between the central processing unit and the electronic accelerator pedal. When the selection switch is turned on, the central processing unit receives the accelerator opening signal from the electronic accelerator pedal. The state adopts different control strategies for the accelerator opening signal, and sends the processed signal to the engine ECU, thereby controlling the fuel injection volume and realizing intelligent speed control; when the selection switch is closed, the accelerator opening signal of the electronic accelerator pedal does not pass through The central processing unit sends directly to the engine ECU. the

Obviously, the vehicle-mounted intelligent speed-limiting device of the present utility model greatly improves the reliability and intelligence of the vehicle-mounted speed-limiting device. The speed limit information is corrected in real time, and the overspeed behavior is controlled by controlling the output signal of the electronic throttle, which can solve the unintentional and intentional overspeed behavior in time, so the driving safety is greatly improved, traffic accidents are reduced, and traffic safety is improved. the

Description of drawings

Fig. 1 is the schematic diagram of the best embodiment of vehicle-mounted intelligent speed limiting device of the present utility model;

Fig. 2 is a working principle diagram of the vehicle-mounted intelligent speed limiting device shown in Fig. 1 . the

Reference signs:

1. Central processing unit 5. External environment perception sensor

2. GPS device 6. Electronic accelerator pedal

2.1. GPS receiver 7. Throttle opening signal

2.2. GPS antenna 8. Engine ECU

3. Display 9. Vehicle power supply

4. A/D acquisition card 10. Selection switch

Detailed ways

Shown in Fig. 1 is a preferred embodiment of the present utility model. the

As shown in Figure 1, the vehicle-mounted intelligent speed limiter of the most preferred embodiment of the present utility model comprises CPU 1, GPS device 2, display 3 and vehicle-mounted power supply 9, and described GPS device 2 comprises GPS receiver 2.1 and GPS antenna 2.2; the GPS device 2 sends position and speed information to the central processing unit 1 through the serial port, the external environment perception sensor 5 sends the external environment perception signal to the central processing unit 1 through the A/D acquisition card 4, and the display 3 receives And display the image warning information from central processing unit 1 and send sound warning information, described central processing unit 1 is equipped with GIS software system, central processing unit 1 utilizes GIS software system to be able to obtain the speed limit information of each different sections in real time, described There is a selection switch 10 on the circuit between the central processing unit 1 and the electronic accelerator pedal 6. When the selection switch 10 is turned on, the central processing unit 1 receives the accelerator opening signal 7 from the electronic accelerator pedal 6, and after processing the signal Sent to the engine ECU8, when the selector switch 10 is closed, the accelerator opening signal 7 of the electronic accelerator pedal 6 is directly sent to the engine ECU8 without going through the central processing unit 1. The central processing unit 1 obtains the road speed limit information in the GIS software system according to the position information obtained by the GPS device 2, and uses the output signal of the external environment perception sensor 5 to correct the road speed limit information, and compares the road speed limit information obtained by the GPS device 2 speed information and the revised road speed limit information to determine whether the vehicle is in an overspeed state. If the vehicle is overspeed, an image and sound alarm will be sent to the driver through the display, and when the selector switch 10 is on, the electronic throttle opening signal is controlled. Thereby controlling the fuel injection quantity, and then controlling the speed, so as to avoid the occurrence of overspeed driving behavior. the

The working principle of the vehicle-mounted intelligent speed limiting device of the present embodiment is as follows:

The central processing unit 1 receives and processes the vehicle driving position and speed information output by the GPS device, and the external environment signal output by the external environment perception sensor, and uses the processed external environment signal to correct the speed limit information of the GIS system accordingly. The vehicle speed information output by the device and the corrected speed limit information can intelligently judge whether the vehicle is in the speeding state, so as to choose whether to send the image and sound alarm information to the display, and control the speed of the vehicle by controlling the accelerator opening signal, so as to realize the anti-speeding. Intelligent control of behavior. the

Adopting the vehicle-mounted intelligent speed limiting device of the present utility model has intelligence, reliability and flexibility in monitoring overspeed driving behavior:

Intelligence: Due to the use of external environment perception sensors, the vehicle-mounted intelligent speed limiting device of the present invention can change the definition of the overspeed critical value as the road environment changes, and the definition of the overspeed critical value is intelligent and flexible, rather than a single ,stable. Only in this way can the setting of overspeed critical value be more scientific, thereby effectively preventing the occurrence of overspeed phenomenon and improving traffic safety. the

Reliability: Since the vehicle-mounted intelligent speed limit device of the present invention obtains road speed limit information of different road sections based on the GIS system and changes it according to the external road environment, its overspeed critical value is more accurate and reliable, and can effectively suppress the occurrence of overspeed behavior. the

Flexibility: With a selection switch, you can choose whether to control the electronic throttle independently, which is more humane. the

Although the above description of the utility model in conjunction with the accompanying drawings is helpful for understanding the utility model, the utility model is by no means limited to the illustrated embodiment. On the contrary, various improvements and substitutions can be made to the present invention within the scope defined by the claims. the

Claims (8)

1. a Vehicular intelligent speed-limiting device comprises central processing unit (1), GPS device (2), and display (3) and vehicle power (9), described GPS device (2) comprise GPS receiver (2.1) and gps antenna (2.2); It is characterized in that: described GPS device (2) sends position and velocity information by serial ports to described central processing unit (1), external environment detecting sensor (5) sends the external environment perceptual signal by A/D capture card (4) to described central processing unit (1), display (3) receives and shows that described central processing unit (1) is equipped with the GIS software systems from the image alarm information of central processing unit (1) and the warning message of sounding.

2. Vehicular intelligent speed-limiting device as claimed in claim 1 is characterized in that: described external environment detecting sensor (5) adopts rain propagated sensation sensor.

3. Vehicular intelligent speed-limiting device as claimed in claim 2 is characterized in that: described external environment detecting sensor (5) adopts photo-electric rain propagated sensation sensor.

4. Vehicular intelligent speed-limiting device as claimed in claim 1 is characterized in that: described external environment detecting sensor (5) adopts visibility sensor.

5. Vehicular intelligent speed-limiting device as claimed in claim 1, it is characterized in that: described central processing unit (1) receives the accelerator open degree signal (7) from efp (6), according to the transport condition that vehicle is different accelerator open degree signal (7) is taked different control strategies, and the signal after will handling sends to Engine ECU (8), thereby control distributive value size realizes intelligent speed control.

6. as claim 2 or 3 described Vehicular intelligent speed-limiting devices, it is characterized in that: described central processing unit (1) receives the accelerator open degree signal (7) from efp (6), according to the transport condition that vehicle is different accelerator open degree signal (7) is taked different control strategies, and the signal after will handling sends to Engine ECU (8), thereby control distributive value size realizes intelligent speed control.

7. Vehicular intelligent speed-limiting device as claimed in claim 4, it is characterized in that: described central processing unit (1) receives the accelerator open degree signal (7) from efp (6), according to the transport condition that vehicle is different accelerator open degree signal (7) is taked different control strategies, and the signal after will handling sends to Engine ECU (8), thereby control distributive value size realizes intelligent speed control.

8. as claim 5 or 7 described Vehicular intelligent speed-limiting devices, it is characterized in that: have a selector switch (10) on the circuit between described central processing unit (1) and the efp (6), when selector switch is opened, described central processing unit (1) receives the accelerator open degree signal (7) from efp (6), according to the transport condition that vehicle is different accelerator open degree signal (7) is taked different control strategies, and the signal after will handling sends to Engine ECU (8), thereby control distributive value size realizes intelligent speed control; When selector switch was closed, the accelerator open degree signal (7) of efp (6) directly sent to Engine ECU (8) without central processing unit (1).

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