CN203093762U - Over-speed alarm system based on navigation map - Google Patents

Abstract

The utility model discloses an overspeed alarm system based on a navigation map, which comprises a vehicle-mounted navigator, a vehicle speed sensor for collecting the vehicle speed, an acceleration sensor for collecting the vehicle speed, and an acceleration sensor for processing data and analyzing the sound according to the processing result. The light alarm device controls the microprocessor, the sound and light alarm device and the power supply, the car navigator is connected with the microprocessor through the USB interface, the output ends of the vehicle speed sensor and the acceleration sensor are respectively connected with the input end of the microprocessor, and the microprocessor The output end of the processor is connected with the input end of the sound and light alarm device, and the power supply is connected with the microprocessor to supply power for the system. The system can send an alarm when the vehicle is speeding, reminding the driver to slow down to drive safely, and has a simple structure.

Description

A Speeding Alarm System Based on Navigation Map

technical field

The utility model relates to an overspeed alarm system based on a navigation map, which is used for alarming and prompting the driver when the vehicle is overspeeding on the road.

technical background

With the rapid development of my country's national economy, road conditions are getting better and better, and the speed of vehicles on the road has been improved. Because of the habit of driving fast, it is easy to cause traffic accidents due to speeding, especially in some road sections with speed limit requirements. According to the statistics of traffic accidents in my country in 2010, there were 3,906,164 road traffic accidents reported nationwide in 2010, 219,521 road traffic accidents involving casualties, resulting in 65,225 deaths, 254,075 injuries, and direct property losses of 930 million yuan. Among them, the proportion of traffic accidents caused by vehicle speeding accounts for about 35%, which is the most important cause of traffic accidents. At present, it is rare to see an effective system that can remind the driver of an automatic alarm when the vehicle is overspeeding. Therefore, it is very important for road traffic safety to study a system that can automatically alarm when the vehicle is overspeeding.

Contents of the invention

In view of the defects or deficiencies in the above-mentioned prior art, the purpose of this utility model is to provide a speeding alarm system based on a navigation map. An alert will be issued to remind the driver to slow down and drive safely.

In order to achieve the above object, the utility model adopts the following technical solutions:

A speeding alarm system based on a basic navigation map, including a car navigator, a vehicle speed sensor for collecting vehicle speed, an acceleration sensor for collecting vehicle speed, and used to process data and control the sound and light alarm device according to the processing results microprocessor, sound and light alarm device and power supply, wherein, the vehicle navigator is connected with the microprocessor through the USB interface, and the output ends of the vehicle speed sensor and the acceleration sensor are respectively connected with the input ends of the microprocessor, The output end of the microprocessor is connected to the input end of the sound and light alarm device, and the power supply is connected to the microprocessor to supply power for the system.

The utility model also includes the following other technical features:

The car navigator adopts Renwoyou 1360GPS navigator.

The acceleration sensor uses a three-axis accelerometer LIS3DH.

The microprocessor adopts AT86C51 single-chip microcomputer.

The sound and light alarm device includes a buzzer and a light emitting diode.

The utility model has the following advantages:

1) Low cost. The devices selected by the device are low in price and low in cost.

2) Easy to operate. You only need to turn on the car navigator while driving. Other devices are directly powered by the car battery.

3) Strong real-time performance. Once the car speeds, the system will immediately send out an alarm to remind the driver to slow down.

4) Possess continuous monitoring capabilities. It can prevent the undesired phenomenon that the driver drives normally in the overspeed detection zone but overspeeds outside the overspeed detection zone.

Description of drawings

Fig. 1 is a structural schematic diagram of an embodiment of the utility model.

Fig. 2 is a schematic diagram of the workflow of the utility model.

The utility model is further explained below in conjunction with the accompanying drawings and specific embodiments.

Detailed ways

Referring to Fig. 1, the overspeed alarm system of the basic single-chip microcomputer of the present utility model comprises vehicle-mounted navigator 1, the vehicle speed sensor 2 that is used to collect vehicle speed, the acceleration sensor 3 that is used to collect vehicle speed, is used for processing data and according to processing As a result, the microprocessor 4, the sound and light alarm device 5 and the power supply 6 controlling the sound and light alarm device, wherein, the vehicle navigator 1 is connected with the microprocessor 4 through a USB interface, and the vehicle speed sensor 2 and the acceleration sensor The output terminals of 3 are respectively connected with the input terminals of the microprocessor 4, the output terminals of the microprocessor 4 are connected with the input terminals of the sound and light alarm device 5, and the power supply 6 is connected with the microprocessor 4 to supply power for the system.

Said car navigator 1 adopts Renwoyou 1360 GPS navigator in this embodiment, and utilizes the electronic map therein to provide the microprocessor 4 with the road section where the vehicle is located and the speed limit information of each road section in real time. Renwoyou 1360GPS navigator has the following advantages: small size, light weight, high sensitivity, high cost performance, and has more than 550,000 alarm data nationwide, including road speed limit, red light running, snapshot, electronic monitoring, etc. Therefore, it can fully meet the needs of the system. Its basic parameters are as follows: product type: PND portable; screen size: 5.0 inches; screen type: color TFT screen; screen resolution: 480*272; product size: 130×90×17mm; product weight: 208g; built-in memory: Built-in 2GB, support external SD card.

The vehicle speed sensor 2 adopts a vehicle speed sensor equipped with the vehicle itself in this embodiment.

The acceleration sensor 3 adopts a three-axis accelerometer LIS3DH in this embodiment, which is used to measure the longitudinal deceleration of the vehicle, and transmit the longitudinal deceleration signal of the vehicle to the microprocessor 4 . The three-axis accelerometer LIS3DH has the following advantages: extremely low power consumption, which reduces power consumption by more than 90% compared with existing solutions in the market, and the minimum operating current consumption is 2μA, while reducing the packaging area and improving chip functionality. In the full range of ±2g/±4g/±8g/±16g, it can provide very accurate measurement data output, and it can still maintain excellent stability under rated temperature and long-term work. Therefore, it fully meets the needs of this system.

Microprocessor 4 is used for the comparison of real-time vehicle speed and road section speed limit, the judgment of this vehicle longitudinal acceleration and the control of sound and light alarm device 5, and microprocessor 4 adopts AT89C51 single-chip microcomputer in the present embodiment.

The sound and light alarm device 5 includes a buzzer and a red light emitting diode.

The power supply 6 in this embodiment uses a storage battery equipped with the vehicle itself.

Referring to Fig. 2, the working process of the present utility model is as follows:

Step 1: Initialization.

Step 2: The vehicle speed sensor 2 measures the vehicle speed, and transmits the vehicle speed information to the microprocessor 4, then go to step 3.

Step 3: the microprocessor 4 utilizes the information of the electronic map provided by the car navigator 1 to judge whether the road section where the vehicle is located has speed limit information, and if so, proceed to step 4, otherwise proceed to step 5.

Step 4: If the vehicle speed is greater than the speed limit value of this section, go to step 6, otherwise go to step 1.

Step 5: If the vehicle speed is greater than the default limit value, go to step 6, otherwise go to step 1.

Step 6: The microprocessor 4 controls the sound and light alarm device 5 to turn on, the buzzer sends out a sound alarm, and the red light-emitting diode lights up, then go to step 7.

Step 7: Use the acceleration sensor 3 to measure the longitudinal deceleration of the vehicle, and transmit the longitudinal deceleration information to the microprocessor 4. If the longitudinal deceleration is greater than the limit value, then go to step 8, otherwise go to step 6.

Step 8: Turn off the sound and light alarm device and go to step 1.

Claims (5)

1. A speeding alarm system based on a navigation map, characterized in that it includes a vehicle navigator (1), a vehicle speed sensor (2) for collecting vehicle speed, an acceleration sensor (3) for collecting vehicle speed, A microprocessor (4), an audible and visual alarm device (5) and a power supply (6) for processing data and controlling the audible and visual alarm device according to the processing results, wherein the car navigator (1) communicates with the The microprocessor (4) is connected, the output terminals of the vehicle speed sensor (2) and the acceleration sensor (3) are respectively connected with the input terminals of the microprocessor (4), and the output terminals of the microprocessor (4) The input end of the sound and light alarm device (5) is connected, and the power supply (6) is connected with the microprocessor (4) to supply power for the system. 2. The speeding alarm system based on the navigation map as claimed in claim 1, wherein the vehicle navigator (1) adopts Renwoyou 1360 GPS navigator. 3. The speeding alarm system based on the navigation map according to claim 1, characterized in that the acceleration sensor (3) adopts a three-axis accelerometer LIS3DH. 4. The speeding alarm system based on the navigation map according to claim 1, characterized in that, the microprocessor (4) adopts AT86C51 single-chip microcomputer. 5. The speeding warning system based on the navigation map according to claim 1, characterized in that the sound and light warning device (5) includes a buzzer and a light emitting diode.

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