Utility model content
The purpose of this utility model be to overcome above-mentioned weak point of the prior art and provide a kind of simple in structure, easy to operate, utilize A-GPS technology to realize the fast GPS wrist-watch of location.
The utility model is realized in the following way:
Utilize A-GPS technology to realize a GPS wrist-watch for location fast, comprise button 2, LCD display 3, table mirror 4, watchcase 5, PCB circuit board 6, battery 9, bottom 11; Described watchcase 5 is interlockingly connected and forms a cavity with bottom 11, and PCB circuit board 6 is located in cavity; Table mirror 4 is located on watchcase 5; Described button 2 is located on watchcase 5, and is connected with PCB circuit board 6; Described battery 9 is located at the below of PCB circuit board 6, and is connected with PCB circuit board 6; Described LCD display 3 is located at the top of PCB circuit board 6, and is connected with PCB circuit board 6; It is characterized in that: in described watchcase 5, be provided with bluetooth module 1, described bluetooth module 1 is connected with PCB circuit board 6; In described watchcase 5, be provided with GPS module 10, described GPS module 10 is connected with PCB circuit board 6; Described watchcase 5 is provided with water proof ring with the junction of bottom 11;
Described PCB circuit board 6 comprises satellite positioning module circuit A, MCU circuit B, key circuit C, clock circuit D, reset circuit E, LCD display circuit F, bluetooth module circuit G, and satellite positioning module circuit A transmits longitude and latitude trajectory signal to MCU circuit B; Key circuit C sends key information to MCU circuit B; Clock circuit D transmission clock signal is to MCU circuit B; Reset circuit E transmits reset signal to MCU circuit B; Bluetooth module circuit G transmits A-GPS data to MCU circuit B; MCU circuit B will send LCD display circuit F displaying time, exercise data to after the information processing receiving; MCU circuit B transmits signal and sends exercise data to bluetooth module circuit G.
The utility model has the advantage of: simple in structure, easy and simple to handle, utilize A-GPS technology to realize the fast GPS wrist-watch solution of location, well solve the current GPS wrist-watch cold start-up time long, the problem that positioning precision is poor.
Embodiment
Now by reference to the accompanying drawings, the utility model embodiment is described in detail in detail:
As shown in Figure 1, Figure 2, Figure 3 shows, a kind of A-GPS technology of utilizing realizes the GPS wrist-watch of location fast, comprises button 2, LCD display 3, table mirror 4, watchcase 5, PCB circuit board 6, battery 9, bottom 11; Watchcase 5 is interlockingly connected and forms a cavity with bottom 11, and PCB circuit board 6 is located in cavity; Table mirror 4 is located on watchcase 5; Button 2 is located on watchcase 5, and is connected with PCB circuit board 6; Described battery 9 is located at the below of PCB circuit board 6, and is connected with PCB circuit board 6; LCD display 3 is located at the top of PCB circuit board 6, and is connected with PCB circuit board 6; In watchcase 5, be provided with bluetooth module 1, bluetooth module 1 is connected with PCB circuit board 6; In watchcase 5, be provided with GPS module 10, GPS module 10 is connected with PCB circuit board 6; Watchcase 5 is provided with water proof ring with the junction of bottom 11.
As shown in Figure 4, Figure 5, the utility model PCB circuit board 6 comprises satellite positioning module circuit A, MCU circuit B, key circuit C, clock circuit D, reset circuit E, LCD display circuit F, bluetooth module circuit G, and satellite positioning module circuit A transmits longitude and latitude trajectory signal to MCU circuit B; Key circuit C sends key information to MCU circuit B; Clock circuit D transmission clock signal is to MCU circuit B; Reset circuit E transmits reset signal to MCU circuit B; Bluetooth module circuit G transmits A-GPS data to MCU circuit B; MCU circuit B will send LCD display circuit F displaying time, exercise data to after the information processing receiving; MCU circuit B transmits signal and sends exercise data to bluetooth module circuit G.
Satellite positioning module circuit A: electromagnetic wave signal is changed into faint high-frequency signal; Amplify again, filtering, be decoded into digital signal level and export to MCU circuit B.
MCU circuit B: according to various input signals, carry out arithmetic, logical operation, Machining Analysis, outputs signal to LCD display circuit F displaying time, exercise data, and bluetooth module circuit G sends exercise data.
Key circuit C: input various user instructions to MCU circuit B.
Clock circuit D: provide stable clock signal to MCU circuit B.
Reset circuit E: provide reliable reset signal to MCU circuit B.
LCD display circuit F: accept MCU circuit B signal, displaying time, exercise data.
Bluetooth module circuit G: accept MCU circuit B signal, receive or send data.
Experience defect above in order to make up user in background technology, it is the GPS wrist-watch that assistant GPS location technology realizes quick location that the utility model has adopted A-GPS (Assisted GPS).A-GPS (Assisted GPS) is that assistant GPS location technology A-GPS technology is a kind of technology that network base station information and GPS information position transfer table that combines.Its principle is some with reference to GPS receiver by arranging on the good position of satellite signal receiving effect, and utilize A-GPS server by with the coarse position of the mutual acquisition terminal of terminal, then the auxiliary data such as ephemeris and clock by mobile network, this terminal being needed sends to terminal, carries out gps position measurement by terminal.After measurement finishes, terminal row calculating location result or measurement result is sent back to AGPS server in vain, server calculates and result is sent back to terminal.
The utility model embedded with bluetooth communication function, can with the communication of mobile terminal such as smart mobile phone.Smart mobile phone sends to location server by special APP the address information of base station, and location server sends the GPS supplementary that this position is relevant (ephemeris that comprises GPS and azimuth pitch angle etc.) according to the address information of base station to smart mobile phone.Smart mobile phone sends to GPS wrist-watch by special APP GPS supplementary relevant this position (ephemeris that comprises GPS and azimuth pitch angle etc.) again.
Adopt after A-GPS technology, bringing up to for 2-3 minute that cold start-up can be located by independent GPS positioning time was no more than for 10 seconds, and positioning precision can be brought up to 10 meters of left and right above by independent GPS location 15-20 rice.
At usual state, each element circuit, in sleep state, reaches energy-conservation object.B retention time function of MCU circuit, MCU circuit B sends temporal information and shows current time to LCD display circuit F.
When receiving key circuit C, MCU circuit B sends synchronous A-GPS data command, MCU circuit B starts immediately and satellite positioning module circuit A, bluetooth module circuit G between communicate by letter, and sending respectively command signal to satellite positioning module circuit A, bluetooth module circuit G, satellite positioning module circuit A, bluetooth module circuit G are activated respectively; Bluetooth module circuit G and smart mobile phone APP connect, and smart mobile phone sends to bluetooth module circuit G the A-GPS data of obtaining from location server.Bluetooth module circuit G is temporarily stored in the A-GPS data that receive in the buffer zone of bluetooth module circuit G, after expire the buffer zone of bluetooth module circuit G, bluetooth module circuit G sends request of data from trend MCU circuit B, the request of data of MCU circuit B response bluetooth module circuit G, and start to receive the A-GPS data in bluetooth module circuit G, MCU circuit B is temporarily stored in the A-GPS data that receive in the buffer zone of MCU circuit B, after expire the buffer zone of MCU circuit B, MCU circuit B sends satellite positioning module circuit A to the A-GPS data that receive automatically, MCU circuit B empties buffer zone and receives new data simultaneously.Receive until A-GPS data receiver completes through iterative cycles.After A-GPS data receiver completes, bluetooth module circuit G is to having finished receiving status request signal when MCU circuit B sends data, MCU circuit B response request signal, MCU circuit B sends respectively instruction to satellite positioning module circuit A and bluetooth module circuit G, allows it get back to sleep state.
Send satnav instruction when MCU circuit B receives key circuit C, MCU circuit B starts and satellite positioning module circuit A immediately, and sends a command signal to satellite positioning module circuit A, and satellite positioning module circuit A is activated; Satellite positioning module circuit A via satellite positioning antenna receives aerial faint electromagnetic wave, the satnav sky faint electromagnetic wave signal of bundle of lines sends satellite positioning module circuit A to, satellite positioning module circuit A passes through inner High frequency amplification, filtering, shaping, decodes digital signal level, and satellite positioning module circuit A sends MCU circuit B MCU circuit B to digital signal level and reads; MCU circuit B through calculating, processing processes to obtain the longitude and latitude of out position.MCU circuit B sends LCD display circuit F to longitude and latitude, speed, range information, longitude and latitude, speed, the range information of the real-time display position of LCD display circuit F. if MCU circuit B receives that key circuit C sends the instruction of end satnav, MCU circuit B sends instruction immediately to satellite positioning module circuit A, allows it get back to sleep state.
Send the instruction of transmission exercise data when MCU circuit B receives key circuit C, MCU circuit B starts communicating by letter between bluetooth module circuit G immediately, and sends a command signal to bluetooth module circuit G, and bluetooth module circuit G is activated; Bluetooth module circuit G is used for sending current exercise data, if exercise data is sent, bluetooth module circuit G is to sending data status request signal as MCU circuit B, MCU circuit B response request signal, MCU circuit B sends instruction to bluetooth module circuit G, allows it get back to sleep state.
When receiving key circuit C, MCU circuit B sends time calibration in network instruction, MCU circuit B starts communicating by letter between bluetooth module circuit G immediately, and send a command signal to bluetooth module circuit G, bluetooth module circuit G is activated, bluetooth module circuit G is used for receiving current network time, if received successfully or overtime failure, bluetooth module circuit G return message is to MCU circuit B, MCU circuit B, according to returning results, sends time signal to LCD display circuit F information instruction time.MCU circuit B sends instruction to bluetooth module circuit G simultaneously, allows it get back to sleep state.
At each state, clock circuit D is for MCU circuit B provides stable clock source.Reset circuit E is for MCU circuit B provides stable reset source.