CN202502626U

CN202502626U - GPS-based automatic bus stop announcement system

Info

Publication number: CN202502626U
Application number: CN2012200692634U
Authority: CN
Inventors: 张晓昆; 魏本杰
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-02-28
Filing date: 2012-02-28
Publication date: 2012-10-24
Anticipated expiration: 2022-02-28

Abstract

The utility model relates to a GPS-based automatic bus stop announcement system. The system is characterized by comprising a GPS receiver, a memory, an FPGA control chip and a voice announcement device. The GPS receiver is respectively connected with the memory and the FPGA control chip. The memory is connected with the FPGA control chip. The FPGA control chip is connected with the voice announcement device. According to the technical scheme, a characteristic of the GPS receiving module accurate positioning is used for acquiring the bus real-time information such as speed and position. Therefore, human disturbance is avoided, automatic stop announcement is ensured to be accurate and reliable. In the automatic working mode, the system needs no human operation such that a hidden trouble caused by a driver who is highly concentrated on driving but has to be disturbed to announce a stop is avoided. The voice information and the stop information stored by the voice memory and a large capacity FLASH can be updated along with the stop and route changes, and a stop announcement device factory is not relied on for handling the changes.

Description

Automatic bus stop announcing system based on GPS

Technical field

The utility model is particularly related to the automatic bus stop announcing system, particularly based on the automatic bus stop announcing system of GPS.

Background technology

The automatic switch door system is a very important ingredient in the public transit system, also is to realize the intelligentized important step of bus.And the door opening and closing system on the present bus basically all needs manually-operated.Behind bus arrival, the driver needs manually to control the switch of car door.This mode not only bothers very much, and is intelligent inadequately, but also because there are a lot of potential safety hazards in the human factor that the driver has in control.

Find that by inquiry manually controlling the drawback that door contact interrupter mainly exists has:

1): potential safety hazard

Because door contact interrupter is under manually-operated; Independently judge whether to carry out the switch of door fully by the driver; And the driver who should the notice high concentration drives has to divert attention and diverts one's attention to carry out the operation of door contact interrupter, brings potential safety hazard in driving to bus like this.Simultaneously, because the driver also can judge inaccurate situation owing to various interference exist, add when the volume of the flow of passengers is big; The passenger who gets on or off the bus increases, and car often occurs and does not also arrive at a station, under the situation about not coming to a complete stop; Car door opening is to such an extent as to bring hidden danger to passenger's life security.In fact, do not come to a complete stop about bus, the incident that the passenger that car door causes with regard to opening is injured can find a lot of reports.

2): manual operation trouble, intelligence inadequately

As the informationalized epoch, the door contact interrupter of bus also need judge through artificial mode, thereby controls, and is the growth requirement that is not suitable for very much current society.Add itself existing a series of potential safety hazard, can produce adverse influence in public's image in the heart to public transit system undoubtedly, and can influence the image of entire city.

The utility model content

The purpose of the utility model is; Propose a kind of new technical scheme and solve the above drawback of mentioning; This technical scheme adopts advanced technologies such as global positioning satellite (GPS), high-capacity FLASH storage, phonetic synthesis, and has used the FPGA that is rising at present to replace traditional single-chip microcomputer to realize need not any manually-operated, complete automatic broadcasting as control system.

For realizing above-mentioned utility model purpose, the utility model proposes the automatic bus stop announcing system based on GPS, is characterised in that this system comprises GPS receiver, storer, FPGA control chip and voice announcer;

Said GPS receiver links to each other with said FPGA control chip with said storer respectively, and said storer links to each other with said FPGA control chip, and said FPGA control chip links to each other with said voice announcer.

More preferably, this system also comprises the speech memory that links to each other with said FPGA control chip.

More preferably, this system also comprises the expansion interface that links to each other with said FPGA control chip.

More preferably, said storer is the FLASH storer.

More preferably, said GPS receiver links to each other with said FPGA control chip through the RS232 serial ports.

More preferably, said expansion interface is the RS232 serial ports.

More preferably, said speech memory is a MP3 format.

The advantage of the utility model is that the present technique scheme utilizes GPS to accept the pinpoint characteristic of module, obtains the real-time speed of bus, and information such as position have been stopped artificial interference, automatic broadcasting, accurately and reliably.This practicality need not manually-operated under automatic mode of operation, the driver who has avoided the notice high concentration to drive diverts attention to call out the stops and operates the potential safety hazard of bringing.Voice messaging of being deposited in speech memory and the high-capacity FLASH and site information can needn't rely on station reporting instrument producer to handle according to the variation updated at any time of website, route.The utility model has adopted FPGA as control terminal, compares traditional single-chip microcomputer, and performance is more stable, and work efficiency is also necessarily promoted.

Description of drawings

The automatic bus stop announcing system chart that Fig. 1 proposes for the utility model based on GPS;

The automatic bus stop announcing system works flow process figure that Fig. 2 proposes for the utility model based on GPS.

Embodiment

Below in conjunction with accompanying drawing and embodiment, the technical scheme of the utility model is carried out further detailed explanation.

Automatic bus stop announcing system chart based on GPS as shown in Figure 1, that Fig. 1 proposes for the utility model.Global positioning satellite (GPS) receiver constantly receives the locating information that satellite is sent, and handles the back through the GPS receiver and communicates through RS232 serial ports and FPGA control chip.It is temporary that data messages such as the speed of the bus that the FPGA control chip is sent the GPS receiver here, position are put into register.At this moment; The FPGA control chip is compared these information and the basic site information that is stored in the high-capacity FLASH in advance; In the GPS locating information that gets access to is in the basic website coordinate range that prestores; This moment, bus necessarily was in the turnover website process, just through outputs such as voice announcer and the electronics LED screen information of calling out the stops.FPGA finds the voice messaging with the MP3 format storage in speech memory after meeting the demands, and sends into the output voice module, and the output voice module is sent driving command, makes voice behind power amplifier, through external broadcasting output, reaches the purpose of automatic broadcasting.

Except that automatic broadcasting, this utility model also can realize manual operation, promptly selects required mode of operation through input keyboard.The information of FPGA through importing on the keyboard is switched the duty of oneself.

This utility model also comprises expansion interface, and it is mainly the RS232 serial ports, and convenient and external unit communicates; Perhaps add other operational module again; Like the GPRS module, so that communicate, send the real-time information of bus to command system etc. through wireless network and backstage.

Automatic bus stop announcing system works flow process figure based on GPS as shown in Figure 2, that Fig. 2 proposes for the utility model.The course of work is:

(1) bus positional information extracts

After automatic stop reporter powered on, the GPS receiver module was just started working, and at first it gets into initial phase, and the GPS module is sought satellite through receiving antenna.Behind the signal that receives multi-satellite, decode to the received signal, handle, send in the FPGA control chip through serial ports with the certain protocol packing.The FPGA control chip is judged the information that receives, and sees in its coordinate range that whether is in a certain website.If be in just in the site-bound, drive language module and play the website voice.

(2) voice messaging is play

The FPGA control chip from voice storage module, reads corresponding mp3 formatted data according to the traffic information of storing among the FLASH, and sends among the language module UDA1314 and convert simulating signal into, again through behind the power amplifier, by the stereo set output language.

(3) the automatically prompting of turning round

The automatically prompting of turning round is that the coordinate of vehicle during according to operation carries out the data comparison, reports the voice messaging that turns round automatically.Here, turn round and a little be looked at as a website, be stored in high-capacity FLASH the same with other station datas.When vehicle in the process of moving, when running into bend, the received site information of GPS module will be carried out the data comparison with storing coordinate, report the language message of turning round automatically, prompt passengers is taken care.

(4) input of website coordinate information and voice messaging

If circuit conversion; When reasons such as website change need be changed site information and voice messaging; Can data message be input in the high-capacity FLASH store through serial ports input data information (being mainly RS232 serial ports or PS2 interface), perhaps be input in the voice storage chip with the mp3 format.

(5) switching of mode of operation

Because this utility model has input keyboard, so the user can be divided into two kinds of automatic mode and artificial mode through the mode of operation of keyboard selection station reporting instrument.Under artificial mode, the GPS receiver module obtain behind the satellite-signal will be not can with real-time the comparing of site information of being deposited among the FLASH, but directly control the output of voice module, for the passenger reports site information through keyboard.

(6) circuit switched

This utility model can be stored many route informations owing to adopted high capacity FLASH.When work, can select to switch through input keyboard, the route that selection is being gone, very convenient.

(7) expansion interface uses

Expansion interface to this utility model is reserved can add operational module, like the GPRS module, the real-time information of public transport is sent to command centre through wireless network, is convenient to the operation management of public transit system.The interface that also can when change circuit or site information, import as data.

It should be noted last that above embodiment is only unrestricted in order to the technical scheme of explanation the utility model.Although the utility model is specified with reference to embodiment; Those of ordinary skill in the art is to be understood that; The technical scheme of the utility model is made amendment or is equal to replacement; The spirit and the scope that do not break away from the utility model technical scheme, it all should be encompassed in the middle of the claim scope of the utility model.

Claims

1. based on the automatic bus stop announcing system of GPS, be characterised in that this system comprises GPS receiver, storer, FPGA control chip and voice announcer;

2. the automatic bus stop announcing system based on GPS according to claim 1 is characterized in that this system also comprises the speech memory that links to each other with said FPGA control chip.

3. the automatic bus stop announcing system based on GPS according to claim 1 and 2 is characterized in that this system also comprises the expansion interface that links to each other with said FPGA control chip.

4. the automatic bus stop announcing system based on GPS according to claim 1 and 2 is characterized in that said storer is the FLASH storer.

5. the automatic bus stop announcing system based on GPS according to claim 3 is characterized in that said storer is the FLASH storer.

6. the automatic bus stop announcing system based on GPS according to claim 1 and 2 is characterized in that, said GPS receiver links to each other with said FPGA control chip through the RS232 serial ports.

7. the automatic bus stop announcing system based on GPS according to claim 3 is characterized in that, said GPS receiver links to each other with said FPGA control chip through the RS232 serial ports.

8. the automatic bus stop announcing system based on GPS according to claim 3 is characterized in that said expansion interface is the RS232 serial ports.