CN1967599A - A real time monitoring system for vehicle state - Google Patents
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Abstract
This invention relates to a vehicle state real-time monitoring system, including vehicle-carrying terminal (100) and remote monitoring center (200), and the said vehicle-carrying terminal (100) includes a microprocessor (101), and at least one camera (104) under the control of the microprocessor, the storage media module (102), wireless communications module (106), GPS module (108), and vehicle signal detection and control circuit (110). The camera (104) is used to collect the real-time state image of the collecting car, and send image data to the microprocessor (101) through the first serial port (105) of the microprocessor, and the microprocessor (101) stores image data to storage media module (102), or uploads to the remote monitoring center (200). The vehicle-carrying terminal can record and store all sorts of vehicles information and by the means of wireless communication using the wireless communication module, communicate with the remote monitoring center, thus process real-time monitoring to the vehicle state, and furthermore can display vehicle security, fault tips, alarm and vehicle operation management, and other functions.
Description
Technical field
The present invention relates to a kind of vehicle state monitoring system, more particularly, relate to a kind of system that can monitor in real time vehicle-state.
Background technology
The national standard that country formulated automobile travel recorder in 2003, but the function of standard code is simple relatively, and the function of the car operation management of antitheft, the fault prompting that does not have that the car owner more is concerned about, warning and Carrier Requirements.Therefore,, on the basis of the national standard of automobile travel recorder, need provide a kind of function that the general-utility car Tachographs can either be provided, possess the system of functions such as warning, car phone, note, shooting and operation management again at these defectives.
Summary of the invention
The technical problem to be solved in the present invention is,, the defective that can't in real time monitor simple at the above-mentioned functions of prior art provides a kind of multi-functional, system of monitoring vehicle state in real time.
The technical solution adopted for the present invention to solve the technical problems is: a kind of real time monitoring system for vehicle state is provided, has comprised car-mounted terminal 100 and remote monitoring center 200; Described car-mounted terminal 100 comprises microprocessor 101 and is subjected at least one camera 104 of its control, storage medium module 102, wireless communication module 106, GPS module 108 and signals of vehicles Detection ﹠ Controling circuit 110; Described at least one camera 104 is used to gather the real-time status image in the car, and sending the first serial 105 of view data by microprocessor to microprocessor 101, microprocessor 101 is saved in this pictorial data storage medium module 102 or is uploaded to remote monitoring center 200; Described storage medium module 102 comprises at least one block semiconductor storage medium chip, links to each other with data bus 103 with the address bus of described microprocessor; The wireless telecommunications that described wireless communication module 106 is realized between car-mounted terminal 100 and the remote monitoring center 200 by the second serial 107 of microprocessor; Described GPS module 108 is used to obtain vehicle location information, and sends three serial ports 109 of this locating information by microprocessor to microprocessor 101; Described signals of vehicles Detection ﹠ Controling circuit 103 is used to detect vehicle-state, and sends the input port 111 of status information by microprocessor to microprocessor 101, and 101 pairs of these status informations of microprocessor are carried out judgment processing.
In real time monitoring system for vehicle state of the present invention, described pictorial data be meant camera with the image that collects through obtaining behind the compressed encoding.
In real time monitoring system for vehicle state of the present invention, described car-mounted terminal also comprises input-output device 112, realizes the reception and the transmission of data by the 4th serial ports 113 of microprocessor, and described input-output device 112 comprises Chinese display device and/or handle.
In real time monitoring system for vehicle state of the present invention, described first serial 107 is the RS485 interface.
In real time monitoring system for vehicle state of the present invention, described first serial 105 also is used in outside vehicle and carries out the data download; Adopt the principle of unibus timesharing that described first serial 105 is operated.
In real time monitoring system for vehicle state of the present invention, described second serial 107 is the RS232 interface.
In real time monitoring system for vehicle state of the present invention, described the 3rd serial ports 109 is the RS232 interface.
In real time monitoring system for vehicle state of the present invention, described storage medium module 102 comprises that flash memory, electricity can brush programmable read only memory, ferroelectric storage, static memory, dynamic storage, synchronous dynamic random access memory and/or magnetic RAM.
In real time monitoring system for vehicle state of the present invention, described car-mounted terminal 100 also comprises the clock chip that is used to provide date and time clock feature, and the watchdog chip that is used for the running software situation of supervisory system.
In real time monitoring system for vehicle state of the present invention, described clock chip carries out communication by I2C bus and microprocessor 101.
Implement real time monitoring system for vehicle state of the present invention, has following beneficial effect: the real-time status picture that can utilize the camera collection vehicle, obtain each status information of vehicle by signals of vehicles detection and control circuit, and can obtain the locating information of vehicle by the GPS module.Car-mounted terminal in the supervisory system can write down and store these vehicle state information, and can utilize wireless communication module wherein to communicate with wireless communication mode and remote monitoring center, thereby can monitor in real time vehicle-state, and then can show functions such as vehicle anti-theft, fault prompting, warning and car operation management.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples, in the accompanying drawing:
Fig. 1 is a circuit structure block diagram of the present invention;
Fig. 2 is the circuit diagram of microprocessor module among the present invention;
Fig. 3 is the circuit diagram of wireless communication module among the present invention;
Fig. 4-1 and 4-2 are the circuit diagrams of input-output device module among the present invention;
Fig. 5 is the circuit diagram of signals of vehicles Detection ﹠ Controling circuit module among the present invention;
Fig. 6 is the circuit diagram of power module among the present invention.
Embodiment
As shown in Figure 1, hardware circuit part of the present invention mainly comprises car-mounted terminal 100 and remote monitoring center 200, and wherein car-mounted terminal 100 comprises following modules:
At least one camera 104 is used to gather the real-time status picture in the car.Camera 104 carries out communication by first serial 105 and microprocessor 101, and first serial 105 can utilize RS485 (but being not limited to) interface.After camera 104 collects picture, pass to microprocessor 101, after microprocessor 101 gets access to image data information, can preserve temporarily, also can be uploaded to remote monitoring center 200 by first serial 105.Remote monitoring center 200 also can be taken pictures by the situation that the mode that sends instruction to wireless communication module 106 goes to control in 104 pairs of cars of camera, also can processing such as inquire about to the view data of having preserved.
Signals of vehicles Detection ﹠ Controling circuit 110 is used to detect vehicle-state, as the speed of vehicle, and the switch of car door, the voltage height of vehicle master electricity etc.Signals of vehicles Detection ﹠ Controling circuit 110 is input to these status informations in the microprocessor 101 by the input port 111 of microprocessor, by microprocessor 101 judge, operation such as processing.For example, if car speed is too high, microprocessor 101 information that can give a warning, the prompting user should reduce the speed of a motor vehicle.If car door is opened unusually, microprocessor 101 can be uploaded to remote monitoring center by wireless communication module 106 with this information, and remote monitoring center can send further instruction in view of the above to take corresponding actions.For example, remote monitoring center can require further to obtain the real-time status picture of vehicle, but camera receive after the instruction images acquired and send view data to microprocessor, and then send remote monitoring center to by microprocessor.Remote monitoring center can be taked the oil-break door and/or method such as lock door realizes anti-theft feature.
Input-output device 112 is used for to user's display message or is convenient to user's input information.Comprising Chinese display and/or handle.Input-output device 112 communicates with microprocessor 101 by the 4th serial ports 113.The user can read the real-time status of vehicle from Chinese display, user's certain operations also needs to tell vehicle by Chinese display.For example the user need call, and need import telephone number this moment by Chinese display.If the user need land, then need to input information such as user's ID and password by Chinese display.
Clock chip is for system provides date and time clock feature.Clock chip is used to system that the current time is provided.The communication of this chip and microprocessor 101 is by the I2C bus but be not limited to the I2C bus and finish, and follows but is not limited to the I2C bus protocol.Can be any can be for the center provides clock, the clock chip on date.
Watchdog chip is used for the running software situation of supervisory system.
Wherein, in each interface of microprocessor, its I/O mouth is used to import the speed of vehicle, the switch of car door, status informations such as the voltage height of vehicle master electricity.The serial ports of microprocessor mainly as microprocessor and mobile communication module, comprise the communication between input-output device, GPS module and the camera of Chinese display handle etc.The I/O mouth of microprocessor mainly as the control mouth, is used for vehicle and other modules are controlled.The address bus and the data bus of microprocessor are connected to memory chip, are used for memory chip is visited the location and to its operation that reads and writes data.
The input port of microprocessor is used to detect the state of vehicle, comprise that the left and right of vehicle turns to, the on off state of Qianmen, middle door, braking state, acceleration mode, whether the button of SOS flash appeal is pressed or the like, and by detecting these I/O, user or remote monitoring center just can be known the real-time status that vehicle is present.
A) from storage medium module 102, obtain instruction, the operation of execution command.
B) carry out the reading and writing operation to the second serial 107 that is connected to wireless communication module 106, just receive data message from wireless communication module 106, data are handled, stored, carry out operations such as write command and data transmission to wireless communication module 106.
C) acceptance is handled, is stored locating information according to the data layout of GPS definition from the locating information of GPS module 108.
D) acceptance is preserved, reads and writes, sends to operations such as remote monitoring center 200 from the image information of camera 104 to image information.
E) accept to operate from the user instruction of input-output device 112, instruction is resolved, the result that will carry out returns to output device or remote monitoring center then, perhaps go to carry out the operation of appointment according to instruction, these instructions include but not limited to step on, move back record GSM/GPRS, Outgoing Call, inquiry is provided with, and carries out operation management etc.
F) accept car status information, these input informations are judged, and the operation of appointment is carried out in input according to difference, includes but not limited to report to the police, report center etc. from signals of vehicles Detection ﹠ Controling circuit 110.
Shown in Fig. 2-6, provided the circuit diagram of the preferred embodiments of the present invention, wherein microprocessor adopts Epson (EPSON) S1C33209 chip of 32, and wireless communication module is taked the M22 module of Benq (BenQ), and the GPS module is taked the REB-12R series of Dingtian (RoyalTek).The storage medium module adopts flash memory (Flash Memory), and cache module adopts SRAM.
Fig. 2 is the circuit diagram of microprocessor module among the present invention.The 3rd serial ports (P00 of microprocessor, P01) be used to receive and send the data of wireless communication module, MCU (Micro Controller Unit, microprocessing unit) by the 3rd serial ports the M22 module is sent AT and instruct operational module, after wireless communication module is accepted AT instruction that MCU sends over, can go to carry out corresponding operation according to different AT instructions, then operating result is returned to MCU by serial ports, MCU receives the feedback of AT instruction, just can know the module current working state, go to carry out different operations according to these duties then, for example, if the user will make a phone call, can send one " ATD " instruction according to MCU so goes to allow gsm module carry out dial-up operation, after gsm module is carried out dial-up operation, can return the result that may occur, such as BUSY (meeting busy), NOCARRIER states such as (can't connect), after MCU receives these states by serial ports then, can remove to judge these states: " meeting busy ", " can't connect ", go to carry out different operations again according to these states then, such as these states being returned to Chinese display or other display device, and prompting user dialing etc. again after a while.
Fig. 3 is the circuit diagram of wireless communication module among the present invention.Wireless communication module is except being used for telephony feature, also has a main function, it is exactly remote data transmission, in the present invention, remote monitoring center and vehicle-mounted between data transmission get off to finish by the data-transmission mode that the M22 module is operated in GPRS, MCU sends AT instruction manipulation M22 module, allow module be operated under the GPRS state, when the M22 module receives instruction, and make when oneself being operated under the GPRS data transmission state, this moment, MCU sent data by serial ports to M22, this moment, the M22 module can be directly sends to remote monitoring center to the data that receive from the serial ports of MCU, after remote monitoring center received the data that vehicle transmits by GPRS, remote monitoring center can go to resolve these data according to the agreement of deciding through consultation in advance, analyzes the real-time status that these data just can access vehicle then.
The second serial of microprocessor (P05) is used for the reception of GPS module data, and the GPS module is transferred to MCU with the locating information of vehicle by serial ports, and MCU draws the concrete locating information of vehicle then according to GPS module data designated format analysis data.The longitude and latitude that comprises the vehicle position, orientation, speed or the like information.
The 4th serial ports (P26 of microprocessor, P27) be used for the Data Receiving and the transmission of input-output device, MCU is by the operation to the 4th serial ports, make the user can pass through terminal input-output device, as being Chinese display device or handle in the preferred embodiment, carry out communication with vehicle, and the user can read the real-time status of vehicle from the Chinese display device, user's certain operations also needs to tell vehicle by the Chinese display device, if need call such as the user, the input of telephone number needs the user to import by the Chinese display device, if the user need land, then the user also must input user's ID and password etc. by the Chinese display device.Fig. 4-1 and 4-2 are the circuit diagrams of input-output device module among the present invention.
First serial (the P33 of microprocessor, P16) be used for communication between MCU and the camera, because camera that the present invention adopts and the communication between the MCU, and the outside serial ports that uses when the data of carrying out vehicle are downloaded is same serial ports, therefore for fear of bus contention, need to adopt the principle of unibus timesharing to come serial ports is operated.The present invention adopts is to use the RS485 interface, therefore on circuit, need an external MAX485 chip to finish this specific function, when bus is in MCU camera is operated, MCU can remove to enable the MAX485 chip by I/O (P30) mouthful, and turn off other interrupt operation at this moment, this moment to the operation that reads and writes data of first serial just to the operation of camera.According to the Data Transport Protocol of camera, MCU handles the view data from first serial, comprises preservation, uploads to remote monitoring center etc., and this moment, remote monitoring center just can obtain the realtime graphic data of vehicle interior.The first serial of microprocessor 3 also can be used as the down operation to data simultaneously, this moment the outside data message that can obtain preserving in the storer by first serial.
After vehicle powers on, vehicle is given tacit consent to all cameras all connection, vehicle can carry out initialization to camera according to the instruction that camera provides, after camera receives initialization directive, can go to carry out corresponding initialization action according to instruction, and result phase is returned to MCU by first serial, the state that MCU returns according to camera judges whether camera is working properly, if normally showing, state have camera to connect, and can carry out next step operation,, show that camera does not connect or the camera mistake if state is undesired, can not carry out next step operation this moment, and vehicle will be set to be in not-connected status by camera.Vehicle is exactly the recognition function that realizes camera in this way.Vehicle can be handled the nearly connection of 5 cameras.After the camera initialization was finished, camera was in standby condition, waited for the operational order that MCU sends over by serial ports.
After microprocessor receives the instruction that wireless communication module sends over, MCU can resolve instruction according to the aerial Data Transport Protocol of vehicle and remote monitoring center, if remote monitoring center has sent photographing instruction, this moment, MCU was transferred to camera with photographing instruction according to the order format of camera.If this moment, camera was in standby condition, when camera has detected photographing instruction and imports into, carries out the action of taking pictures, and reply to one of MCU transmission immediately.Reply MCU by this and can learn that camera has obtained instruction, and can receive ensuing instruction.At this moment, MCU need continue to provide more detailed operation information to camera instruction to camera, is snapshot operation or preview image at this moment such as being provided with, and is to need the compressed image form, still compressed image form not.After camera obtains these detailed operation informations, if camera provides correct replying by first serial to MCU, show that camera is in normal operating conditions at this moment, then, compressed image if desired, then camera can adopt image compression encoding certain or that set in advance that image is compressed processing, and image data packets is passed to MCU according to the data packet format size that MCU passes to camera by first serial.MCU filename according to specified format after receiving these packets is kept at it among Flash, is convenient to the inquiry and the search at center.Also can directly upload to remote monitoring center on request.
The input port of microprocessor (K50-K66) is used to detect the state of vehicle, comprise that the left and right of vehicle turns to, the on off state of Qianmen, middle door, braking state, acceleration mode, whether the button of SOS flash appeal is pressed or the like, and by detecting these I/O, user or remote monitoring center just can be known the real-time status that vehicle is present.As shown in Figure 5, be the circuit diagram of signals of vehicles Detection ﹠ Controling circuit module among the present invention.Each output is corresponding with the input port of microprocessor.
Fig. 6 is the circuit diagram of power module among the present invention, forms comprising plurality of units modules such as power supply changeover device unit, voltage detection unit, power conversion unit and power control units.
Real time monitoring system for vehicle state of the present invention can utilize the real-time status picture of camera collection vehicle, obtains each status information of vehicle by signals of vehicles detection and control circuit, and can obtain the locating information of vehicle by the GPS module.Car-mounted terminal in the supervisory system can write down and store these vehicle state information, and can utilize wireless communication module wherein to communicate with wireless communication mode and remote monitoring center, thereby can monitor in real time vehicle-state, and then can show functions such as vehicle anti-theft, fault prompting, warning and car operation management.
Claims (10)
1, a kind of real time monitoring system for vehicle state is characterized in that, comprises car-mounted terminal (100) and remote monitoring center (200);
Described car-mounted terminal (100) comprises microprocessor (101) and is subjected at least one camera (104) of its control, storage medium module (102), wireless communication module (106), GPS module (108) and signals of vehicles Detection ﹠ Controling circuit (110);
Described at least one camera (104) is used to gather the real-time status image in the car, and sending the first serial (105) of view data by microprocessor to microprocessor (101), microprocessor (101) is saved in this pictorial data storage medium module (102) or is uploaded to remote monitoring center (200);
Described storage medium module (102) comprises at least one block semiconductor storage medium chip, links to each other with the address bus and the data bus (103) of described microprocessor;
Described wireless communication module (106) is by second serial (107) the realization car-mounted terminal (100) of microprocessor and the wireless telecommunications between the remote monitoring center (200);
Described GPS module (108) is used to obtain vehicle location information, and sends three serial ports (109) of this locating information by microprocessor to microprocessor (101);
Described signals of vehicles Detection ﹠ Controling circuit (103) is used to detect vehicle-state, and sends the input end (111) of status information by microprocessor to microprocessor (101), and microprocessor (101) carries out judgment processing to this status information.
2, real time monitoring system for vehicle state according to claim 1 is characterized in that, described pictorial data be meant camera with the image that collects through obtaining behind the compressed encoding.
3, real time monitoring system for vehicle state according to claim 1, it is characterized in that, described car-mounted terminal also comprises input-output device (112), the 4th serial ports (113) by microprocessor is realized the reception and the transmission of data, and described input-output device (112) comprises Chinese display device and/or handle.
4, real time monitoring system for vehicle state according to claim 1 is characterized in that, described first string (107) is RS 485 interfaces.
5, real time monitoring system for vehicle state according to claim 4 is characterized in that, described first serial (105) also is used in outside vehicle and carries out the data download; Adopt the principle of unibus timesharing that described first serial (105) is operated.
6, real time monitoring system for vehicle state according to claim 1 is characterized in that, described second serial (107) is RS 232 interfaces.
7, real time monitoring system for vehicle state according to claim 1 is characterized in that, described the 3rd serial ports (109) is RS 232 interfaces.
8, real time monitoring system for vehicle state according to claim 1, it is characterized in that described storage medium module (102) comprises that flash memory, electricity can brush programmable read only memory, ferroelectric storage, static memory, dynamic storage, synchronous dynamic random access memory and/or magnetic RAM.
9, according to any one described real time monitoring system for vehicle state among the claim 1-8, it is characterized in that, described car-mounted terminal (100) also comprises the clock chip that is used to provide date and time clock feature, and the watchdog chip that is used for the running software situation of supervisory system.
10, real time monitoring system for vehicle state according to claim 9 is characterized in that, described clock chip carries out communication by I2C bus and microprocessor (101).
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