A kind of no center self-help GPS vehicle alarm method and deviceTechnical field
The present invention relates to a kind of car alarming method and device, relate in particular to a kind of car alarming method and device based on GPS.
Background technology
In the existing alarm method that relates to GPS, generally all adopt mobile unit to be provided with CPU (central processing unit) (CPU), gsm communication module, gps satellite locating module and warning sensing module; Customer acceptance center is provided with electronic chart.The warning sensing module is passed to CPU with the information that monitors, CPU compares the definition information of this information with the alarm mode that prestores, report to the police as need, then CPU reads the vehicle position information (longitude and latitude, direction, speed) in the GPS module, and this information passed to the gsm communication module with the information that transmits from the warning sensing module, issue service centre by note.Service centre compares vehicle location and electronic chart with definite vehicle heading, and notifies the car owner and determine whether report to the police according to regulation.After adopting aforesaid way,, have only more just can know by electronic chart because the staff of service centre can not directly be directly acquainted with the physical location of vehicle by longitude and latitude.And operator will keep the normal operation of service centre, needs the collection information service fee.Under reality, the common vehicle loss by theft rate is not high relatively, needs other services that service centre provides seldom, and at this moment Monthly Fee is a kind of unduly burdensome to the car owner.Have only needs such as resembling the taxi enterprise operation center to understand the user of the exact position of vehicle, just need the investment substantial contribution to set up the electronic chart that can show the vehicle exact position, and just one of them additional function of reporting to the police, so this type of alarm is proper for above-mentioned user, and just seems improper for common car owner.
Summary of the invention
The purpose of this invention is to provide a kind of no center self-help GPS vehicle alarm method and device.
For reaching above-mentioned purpose, the invention provides a kind of no center self-help GPS vehicle alarm method and device,
Said method comprising the steps of:
A, CPU receive the next information of external transmission and judge, as the current location of need understanding vehicle, then
B, CPU read in the GPS locating module vehicle position data (comprising longitude and latitude, speed, direction etc.) and with tag memory in the position data of the unique point that has compare, choose from the nearest unique point of vehicle as the reference point, and the distance between calculating reference point and this vehicle location, then this car status information (as: reference point, with distance, time of fire alarming, speed, the type of alarm of reference point) is passed to the gsm communication module;
C, gsm communication module send to car owner or default phone with aforementioned information by note.
CPU can receive the information that the warning sensing module sends among the aforesaid A; Can receive the car owner issues mobile unit inquiry vehicle location by phone note command information; Can receive the DTMF instruction that the car owner sends out; Can receive the note instruction of control vehicle-state.
Described device comprises CPU (central processing unit), gsm communication module (storing the telephone number of car owner or requirement in advance), gps satellite locating module and warning sensing module, wherein, on onboard system, also be provided with tag memory, store the position data of certain characteristics point, can compare by the current location data of CPU and vehicle, choose from the nearest unique point of vehicle as the reference point, and the distance between calculating reference point and this vehicle location, then with this car status information (as: reference point, distance with reference point, time of fire alarming, speed, type of alarm) passes to the gsm communication module.
After adopting said method or device, the car owner can recognize at any time vehicle approximate location or by 110 or other not too accurately and the relatively low electronic chart of cost is understood the physical location of vehicle; The high electronic chart of cost owing to do not need to rely in the service centre too accurately, vehicle-mounted gsm system can adopt no monthly rent mobile phone card, and whole expense is reduced, and the car owner can send instruction active and the more convenient position of understanding vehicle in time by note.
Description of drawings
The invention will be further described below in conjunction with accompanying drawing:
Fig. 1 is a structured flowchart of the present invention.
Embodiment
No center self-help GPS vehicle alarm method and device among the present invention, wherein device comprises central processing unit CPU 1, gsm communication module 2 (storing the telephone number of car owner or requirement in advance), gps satellite locating module 3 and warning sensing module 4, wherein, on onboard system, also be provided with tag memory 5, store the position (these points can be some marks in certain city) of the unique point of plurality of preset, CPU1 receives the next information of external transmission and judges that this information can be the information that warning sensing module 4 sends; It can be the car owner issues mobile unit inquiry vehicle location by phone note command information; It can be the DTMF instruction that the car owner sends out; It can be the note instruction of control vehicle-state, understand the current location of vehicle as need, then CPU1 reads the vehicle current location data in the GPS locating module 3, and with tag memory 5 in the position data of the unique point that has compare, choose from the nearest unique point of vehicle as the reference point, and the distance between calculating reference point and this vehicle location, then with this car status information (as: reference point, distance, time, speed, type of alarm) passes to gsm communication module 2, gsm communication module 2 sends to the phone (mobile phone maybe can be received and dispatched the landline telephone of short message) of car owner or requirement by note with aforementioned information, and the car owner will know that the approximate location of vehicle and longitude and latitude are so that further take measures.Mobile unit can also be installed audiomonitor in practical operation, can the voice messaging that listen to directly be passed to the phone of having put through of car owner or requirement by voice channel by GSM communication module 2.