CN200997188Y - Vehicle information aid of roadside traffic sign - Google Patents

Abstract

An auxiliary device for roadside traffic sign vehicle on-board information is provided, which is characterized in that: the circuit structure of the utility model is composed of a GPS receiving part, which comprises a GPS receiving module and a positioning data processing unit, and the output end of the positioning data processing unit is connected with a data input end of a microcomputer; the microcomputer and voice processing and playing circuit, the voice processing circuit exchanges data with the microcomputer via a communication port and is connected with a speaker via a voice signal amplifying circuit; the microcomputer comprises a district road electronic map and a database unit of highway sign information; and a positioning and road condition image and word screen prompt part, which is an LCD liquid crystal dot matrix screen and is connected with the display signal output end of a microprocessor via displaying a drive circuit.

Description

Trackside traffic sign on-vehicle information servicing unit

Technical field

The utility model belongs to intelligent transportation field, relates to a kind ofly based on the gps satellite navigation positioning system, is installed in the safe DAS (Driver Assistant System) on the motor vehicles.

Background technology

The motor vehicles of road running generally all are to come the cue channel line state and the requirement of travelling with the roadside traffic sign at present, and this mode exists many deficiencies and defective.At first sign lay quantity and the position just is restricted, human pilot is owing to be subjected to the influence of road conditions environment, some sign flashes across, and does not note slightly just not observing, so that the accident potential that causes the place ahead Dangerous Area; Some indicates that figure word long neglected and in disrepair is unclear or damages situations such as maintenance is untimely all makes this class sign not have due effect.

Summary of the invention

The purpose of this utility model provides a kind of trackside traffic sign on-vehicle information servicing unit, to solve vehicle ' on highway the time, according to the position of this vehicle ', road ahead information is informed the technical matters of human pilot with voice and/or graphics context mode.

The circuit structure of a kind of trackside traffic sign on-vehicle information servicing unit described in the utility model comprises:

GPS receiving unit, this part comprise GPS receiver module, locator data processing unit, and the output terminal of described locator data processing unit is connected with a data input end of micro computer;

Micro computer and speech processes and playing circuit, speech processing circuit and micro computer carry out exchanges data by communication port, and speech processing circuit is connected with loudspeaker by the voice signal amplifying circuit; Include area road electronic chart and highway sign database of information unit in the micro computer;

Location and road conditions image and literal screen prompt part, this part is a LCD liquid crystal dot matrix screen, it connects the shows signal output terminal of microprocessor by display driver circuit.

Aforesaid a kind of trackside traffic sign on-vehicle information servicing unit, it also comprises a GPRS wireless communication module that is connected with micro computer.

Advantage of the present utility model and good effect are as follows:

1, the utility model is at intelligent traffic safety driver assistance applied technical field, having adopted the gps satellite navigator fix and the road electronic map technique of present technology maturation is position reference, need be compiled into database to the road structure of human pilot prompting and other characteristic information content etc. deposits in this device, when the vehicle ' that this device is housed is on highway, this device can be according to the position of this vehicle ', road ahead information is carried out with voice and/or video text editing, inform human pilot in real-time realizing mode, carry out corresponding preparation in advance, to eliminate accident potential, improve the driving safety degree.

2, this device also has radio communication function, for characteristic informations such as altered road structures, can in time replenish by the area monitoring center and be updated in the car-mounted device database, thereby efficiently revise additional in time road conditions sign and temporary information that needs are augmented change.

Description of drawings

Fig. 1 is the theory diagram of micro computer peripheral functional modules of the present utility model.

Fig. 2 is the schematic diagram of micro computer of the present utility model and speech processes and playing circuit.

Embodiment

The concrete enforcement circuit block diagram of functional module and micro computer and sound circuit has been shown in Fig. 1,2.This circuit micro computer has adopted the MCU core board of the LPC2290 chip of ARM, speech processes adopted tonequality better, reproduction time is 16 minutes ISD4004 speech chip, this chip and core board utilize the SPI1 communication port to carry out exchanges data, SPI synchronous serial data communication protocol is followed in read-write, the voice signal amplifier section adopts the special-purpose chip LM4860 that amplifies of audio frequency, output power is 0.5 watt, and the loudspeaker resistance is 8 ohm.Feed circuit are to adopt vehicle-mounted 12 volts power supplys to generate positive 5V power supply by LM2576, offer GPS reception, radio communication, screen display and voice power amplifier LM4860 and power supply and adjust chip LM1117 generation 3.3V power supply and offer peripheral circuits such as MCU core board and storage, voice signal processing.This system hardware mainly is made up of two parts.One class is that market is widely used, the function OEM plate of technology maturation, as GPS reception, GPRS radio communication, LCD liquid crystal dot matrix screen, MCU monolithic microcomputer kernel plate; Another kind of for adopting the plate-making of integrated circuit (IC) chip and discrete component to build, as speech processes and playing circuit, peripheral control circuit, power circuit etc.Software section is mainly mixed by assembly language and C language to be write.

Before this system applies, earlier the regional electronic chart and the highway sign information content are pre-loaded in this facility database, then this device is installed on the vehicle of desire use, the GPS receiving antenna is placed in the position that front glass place maybe can receive satellite-signal, and power supply general using cigarette lighter socket inserts.Turn on the power switch during use, the system software initialization also detects each hardware unit, enters duty at once after System self-test is normal, and screen and voice are clearly pointed out simultaneously.In the vehicle ', the signal data that this device receives according to GPS, carry out real-time judge and go out the residing geographical position coordinates of vehicle, check identification and judgement according to the data information in coordinate data and the database, when vehicle ' during in normal highway section screen can show the geographic coordinate position and the relevant informations such as highway section title and geographic name at vehicle place in real time, screen and loudspeaker can be pointed out relevant information simultaneously when running into the highway section that the needs prompting is arranged, prepare to inform that human pilot is carried out to be correlated with to highway section, the place ahead, make respective reaction to show concrete condition.Thereby make human pilot need remove to watch roadside sign on one's own initiative, become can be calm the steering vehicle of concentrating one's energy to control, the prompting of the sign of trackside can accurately utilize clear and definite the informing to human pilot of this device timely.Thereby also with regard to effectively many deficiencies and the defective of having avoided existing trackside traffic sign to exist.This device is the vehicle-mounted device of a cover fully independently, to using vehicle without any specific (special) requirements, just get final product from using cigarette lighter socket on the vehicle to insert power supply, and the vehicle cigarette lighter socket is the standard configuration that various vehicles all have installation.

Claims (2)

1, a kind of trackside traffic sign on-vehicle information servicing unit is characterized in that its circuit structure comprises:

GPS receiving unit, this part comprise GPS receiver module, locator data processing unit, and the output terminal of described locator data processing unit is connected with a data input end of micro computer;

Micro computer and speech processes and playing circuit, speech processing circuit and micro computer carry out exchanges data by communication port, and speech processing circuit is connected with loudspeaker by the voice signal amplifying circuit; Include area road electronic chart and highway sign database of information unit in the micro computer;

Location and road conditions image and literal screen prompt part, this part is a LCD liquid crystal dot matrix screen, it connects the shows signal output terminal of microprocessor by display driver circuit.

2, a kind of trackside traffic sign on-vehicle information servicing unit as claimed in claim 1, it is characterized in that: this device also comprises a GPRS wireless communication module that is connected with micro computer.

Images