CN106353781A - Beidou terminal device based on multi-chip cooperative work and control method - Google Patents
Beidou terminal device based on multi-chip cooperative work and control method Download PDFInfo
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- CN106353781A CN106353781A CN201611093559.9A CN201611093559A CN106353781A CN 106353781 A CN106353781 A CN 106353781A CN 201611093559 A CN201611093559 A CN 201611093559A CN 106353781 A CN106353781 A CN 106353781A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
- G01S19/13—Receivers
- G01S19/35—Constructional details or hardware or software details of the signal processing chain
- G01S19/37—Hardware or software details of the signal processing chain
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
- G01S19/13—Receivers
- G01S19/34—Power consumption
Abstract
The invention relates to a Beidou terminal device based on multi-chip cooperative work and a control method. The Beidou terminal device comprises a main chip, a sub chip, a communication selection chip, a power supply control module, a wireless communication chip and a Beidou navigation chip, wherein the main chip is used for processing vehicle data and is in communication with a service platform; the sub chip is used for collecting the vehicle data, sending the vehicle data to the main chip and controlling the power consumption of a system; the communication selection chip is used for switching a communication path according to a signal of the sub chip, and realizing the alternation of the communication control right of the main chip and the sub chip on the wireless communication chip and the Beidou navigation chip; the power supply control module is used for supplying electricity to the wireless communication chip, the Beidou navigation chip and the main chip; the wireless communication chip and the Beidou navigation chip are in mutual communication with the communication selection chip. When the device and the method are used, the dynamic management and control of system power consumption and the management and switching of various work modes are realized through multi-chip cooperative work; the application range is wide.
Description
Technical field
The present invention relates to location and navigation technology field, more particularly, to vehicle mounted guidance terminal power consumption control techniques field, specifically
Refer to a kind of Big Dipper termination based on multi-chip collaborative work and control method.
Background technology
Big Dipper on-vehicle terminal device is mainly made up of uniprocessor chip, wireless communication chips, Beidou navigation chip at present.
National correlation department has also put into effect the technical regulation for Big Dipper car-mounted terminal.With intelligent automobile and following car networking technology
Development, car-mounted terminal will tend to more intelligent, networkings.Obviously, in existing Big Dipper terminal scheme, using list low in energy consumption
Processor system, single function, it is difficult to meet the intelligent, functional requirement of networking.Meanwhile, using the car of high-performance processor
Although mounted terminal function has strengthened, high power consumption is but difficult to meet regulation and customer requirement.In addition, single processor system
Denier breaks down, very difficult self-recovery, affects properties of product.Therefore, multi-chip collaborative work, that is, meet following sophisticated functions need
Ask, disclosure satisfy that laws and regulations requirement it is ensured that lower power consumption again, the technology and method of energy-conservation environment is just particularly important.
Content of the invention
The purpose of the present invention is the shortcoming overcoming above-mentioned prior art, there is provided one kind can work in coordination with work based on multi-chip
Realize Big Dipper termination and the control method of Big Dipper termination power consumption control.
To achieve these goals, the present invention has and constitutes as follows:
It is somebody's turn to do the Big Dipper termination based on multi-chip collaborative work, comprising:
Master chip, for processing vehicle data, and is communicated with service platform；
Association's chip, for collection vehicle data, described vehicle data is sent to described master chip, and control system
Power consumption, described association chip is in communication with each other with described master chip；
Communication selects chip, for the signal switching communication path according to described association's chip, realizes described master chip
With association chip for the Control on Communication power of wireless communication chips and Beidou navigation chip alternately, respectively with described association's chip and
Described master chip is in communication with each other；
Energy supply control module, for powering for described wireless communication chips, Beidou navigation chip and master chip, described
Energy supply control module respectively with described wireless communication chips, Beidou navigation chip and master chip for electrically connecting, and receive and be derived from
The signal of described association's chip；
Wireless communication chips and Beidou navigation chip, this wireless communication chips and Beidou navigation chip all with described communication
Chip is selected to be in communication with each other.
It is preferred that described association's chip is in communication with each other by i2c bus with described master chip.
It is preferred that described master chip is the processor chips that can run linux operating system.
It is preferred that described association's chip is 16 singlechip chips.
Also include a kind of association's chip of the Big Dipper termination based on multi-chip collaborative work for controlling said apparatus
Control method, comprises the following steps:
(1) open described Big Dipper termination, power for described Big Dipper termination device；
(2) association's chip obtains control；
(3) the association's chip described in judges whether to receive power supply signal, if it is, continuing step (4), otherwise, continues step
(5)；
(4) control is given master chip by the association's chip described in, continues step (6)；
(5) enter row data communication with service platform, and enter low-power consumption mode, continue step (2)；
(6) master chip described in enters working condition, and meanwhile, described association's chip keeps communicating with described master chip；
(7) after receiving and restarting confirmation, disconnect the power supply of described master chip, continue step (2).
It is preferred that described step (4) comprises the following steps:
(4-1) the association's chip release control power described in；
(4-2) master chip described in is initialized；
(4-3) the association's chip described in waits described master chip to send start-up mode request；
(4-4) judge whether described association's chip receives described start-up mode request, if it is, continuing step (4-5),
Otherwise, continue step (4-6)；
(4-5) send start-up mode to described master chip to reply, continue step (6)；
(4-6) judge whether described start-up mode request is overtime, if it is, continuing step (4-2), otherwise, continues step
Suddenly (4-3).
It is preferred that described step (5) comprises the following steps:
(5-1) communicated with platform data；
(5-2) the association's chip described in judges whether communication completes, if it is, continuing step (5-3), otherwise, continues step
(5-1)；
(5-3) low-power consumption mode, the power supply of the described Beidou navigation chip of cut-out are entered；
(5-4) timing is carried out to low-power consumption mode；
(5-5) the association's chip described in judges whether the time of low-power consumption mode is overtime, if it is, continuing step (2), no
Then, continue step (5-4).
It is preferred that between described step (6) and step (7), specifically include following steps:
(6-1) keep communicating with described master chip；
(6-2) whether effectively the association's chip described in judges described power supply signal, if it is, continuing step (6-3), no
Then, continue step (6-4)；
(6-3) the association's chip described in judges whether to receive Restart Request, if it is, continuing step (6-8), otherwise, continues
Step (6-7)；
(6-4) the association's chip described in sends Restart Request to described master chip；
(6-5) the association's chip described in judges whether to receive restarts confirmation from described master chip, if it is, continuing step
Suddenly (6-a), otherwise, continue step (6-6)；
(6-6) whether the association's chip described in judges to wait the time restarting confirmation overtime, if it is, continuing step (6-8),
Otherwise, continue step (6-5)；
(6-7) the association's chip described in judges whether to receive heartbeat data, if it is, continuing step (6-1), otherwise, continues
Step (6-8)；
(6-8) disconnect the power supply of described master chip, continue step (2).
Also include a kind of master chip control method of the Big Dipper termination based on multi-chip collaborative work, the method with upper
State association's chip controls method and work in coordination with and carry out, comprise the following steps:
(8) master chip described in is initialized, and obtains control；
(9) send start-up mode request to described association's chip；
(10) master chip described in enters working condition, and real-time detection is the need of restarting, if it is, subsequent steps
(11)
(11) send Restart Request to described association's chip, and prepare to restart.
It is preferred that described master chip is initialized, particularly as follows:
Described association's chip is registered and is initialized to the i2c device driver as linux by described master chip.
It is preferred that between described step (10) and step (11), specifically include following steps:
(10-1) judge whether that receiving startup request replys, if it is, continuing step (10-4), otherwise, continues step
(10-2)；
(10-2) judge that the number of times handss sending startup request are no and exceed setting value, if it is, continuing step (10-3), no
Then, continue step (9)；
(10-3) show abnormal failure, open fault diagnosis model, continue step (10-5)；
(10-4) judge start-up mode, and open corresponding start-up mode；
(10-5) judge that master chip, the need of restarting, if it is, continuing step (11), otherwise, continues step (10-4).
More preferably, described start-up mode includes off-line test pattern, system recovery or upgrade mode, normal work mould
Formula, low-power consumption start-up mode and fault diagnosis model.
It is preferred that described preparation is restarted, specifically include following steps:
(11-1) master chip described in stops current task, and preserves operational data；
(11-2) send to described association's chip and restart confirmation.
Employ the Big Dipper termination based on multi-chip collaborative work and the control method in this invention, by multi-chip
Collaborative work ensure that the high-performance of termination, strong autgmentability, the performance of low-power consumption；Realize the dynamic management of system power dissipation with
Control and the management of multi-operation mode and switching, strengthen the feature of main control chip, have self-diagnosing function it is ensured that system
Stability and system self reover ability；And communicate at a high speed and stablize, be with a wide range of applications.
Brief description
Fig. 1 is the structural representation figure of the Big Dipper termination based on multi-chip collaborative work of the present invention.
Fig. 2 is the flow process of association's chip controls method of the Big Dipper termination based on multi-chip collaborative work of the present invention
Figure.
Fig. 3 is the flow process of the master chip control method of the Big Dipper termination based on multi-chip collaborative work of the present invention
Figure.
Specific embodiment
In order to more clearly describe the technology contents of the present invention, to carry out further with reference to specific embodiment
Description.
In a kind of feasible embodiment, it is somebody's turn to do the Big Dipper termination based on multi-chip collaborative work, comprising:
Master chip, for processing vehicle data, and is communicated with service platform；
Association's chip, for collection vehicle data, described vehicle data is sent to described master chip, and control system
Power consumption, described association chip is in communication with each other with described master chip；
Communication selects chip, for the signal switching communication path according to described association's chip, realizes described master chip
With association chip for the Control on Communication power of wireless communication chips and Beidou navigation chip alternately, respectively with described association's chip and
Described master chip is in communication with each other；
Energy supply control module, for powering for described wireless communication chips, Beidou navigation chip and master chip, described
Energy supply control module respectively with described wireless communication chips, Beidou navigation chip and master chip for electrically connecting, and receive and be derived from
The signal of described association's chip；
Wireless communication chips and Beidou navigation chip, this wireless communication chips and Beidou navigation chip all with described communication
Chip is selected to be in communication with each other.
In one kind preferably embodiment, described association's chip is in communication with each other by i2c bus with described master chip.
In one kind preferably embodiment, described master chip is the processor chips that can run linux operating system.
In one kind preferably embodiment, described association's chip is 16 singlechip chips.
Also include a kind of association's chip of the Big Dipper termination based on multi-chip collaborative work for controlling said apparatus
Control method, comprises the following steps:
(1) open described Big Dipper termination, power for described Big Dipper termination device；
(2) association's chip obtains control；
(3) the association's chip described in judges whether to receive power supply signal, if it is, continuing step (4), otherwise, continues step
(5)；
(4) control is given master chip by the association's chip described in, continues step (6)；
(5) enter row data communication with service platform, and enter low-power consumption mode, continue step (2)；
(6) master chip described in enters working condition, and meanwhile, described association's chip keeps communicating with described master chip；
(7) after receiving and restarting confirmation, disconnect the power supply of described master chip, continue step (2).
In one kind preferably embodiment, described step (4) comprises the following steps:
(4-1) the association's chip release control power described in；
(4-2) master chip described in is initialized；
(4-3) the association's chip described in waits described master chip to send start-up mode request；
(4-4) judge whether described association's chip receives described start-up mode request, if it is, continuing step (4-5),
Otherwise, continue step (4-6)；
(4-5) send start-up mode to described master chip to reply, continue step (6)；
(4-6) judge whether described start-up mode request is overtime, if it is, continuing step (4-2), otherwise, continues step
Suddenly (4-3).
In one kind preferably embodiment, described step (5) comprises the following steps:
(5-1) communicated with platform data；
(5-2) the association's chip described in judges whether communication completes, if it is, continuing step (5-3), otherwise, continues step
(5-1)；
(5-3) low-power consumption mode, the power supply of the described Beidou navigation chip of cut-out are entered；
(5-4) timing is carried out to low-power consumption mode；
(5-5) the association's chip described in judges whether the time of low-power consumption mode is overtime, if it is, continuing step (2), no
Then, continue step (5-4).
In one kind preferably embodiment, between described step (6) and step (7), specifically include following steps:
(6-1) keep communicating with described master chip；
(6-2) whether effectively the association's chip described in judges described power supply signal, if it is, continuing step (6-3), no
Then, continue step (6-4)；
(6-3) the association's chip described in judges whether to receive Restart Request, if it is, continuing step (6-8), otherwise, continues
Step (6-7)；
(6-4) the association's chip described in sends Restart Request to described master chip；
(6-5) the association's chip described in judges whether to receive restarts confirmation from described master chip, if it is, continuing step
Suddenly (6-a), otherwise, continue step (6-6)；
(6-6) whether the association's chip described in judges to wait the time restarting confirmation overtime, if it is, continuing step (6-8),
Otherwise, continue step (6-5)；
(6-7) the association's chip described in judges whether to receive heartbeat data, if it is, continuing step (6-1), otherwise, continues
Step (6-8)；
(6-8) disconnect the power supply of described master chip, continue step (2).
Also include a kind of master chip control method of the Big Dipper termination based on multi-chip collaborative work, the method with upper
State association's chip controls method and work in coordination with and carry out, comprise the following steps:
(8) master chip described in is initialized, and obtains control；
(9) send start-up mode request to described association's chip；
(10) master chip described in enters working condition, and real-time detection is the need of restarting, if it is, subsequent steps
(11)
(11) send Restart Request to described association's chip, and prepare to restart.
In one kind preferably embodiment, described master chip is initialized, particularly as follows:
Described association's chip is registered and is initialized to the i2c device driver as linux by described master chip.
In one kind preferably embodiment, between described step (10) and step (11), specifically include following steps:
(10-1) judge whether that receiving startup request replys, if it is, continuing step (10-4), otherwise, continues step
(10-2)；
(10-2) judge that the number of times handss sending startup request are no and exceed setting value, if it is, continuing step (10-3), no
Then, continue step (9)；
(10-3) show abnormal failure, open fault diagnosis model, continue step (10-5)；
(10-4) judge start-up mode, and open corresponding start-up mode；
(10-5) judge that master chip, the need of restarting, if it is, continuing step (11), otherwise, continues step (10-4).
In one kind more preferably embodiment, described start-up mode includes off-line test pattern, system recovery or upgrading
Pattern, normal mode of operation, low-power consumption start-up mode and fault diagnosis model.
In one kind preferably embodiment, described preparation is restarted, and specifically includes following steps:
(11-1) master chip described in stops current task, and preserves operational data；
(11-2) send to described association's chip and restart confirmation.
The present invention provides a kind of Big Dipper termination based on multi-chip collaborative work and control method, should be based on multi-chip
Big Dipper termination, it include master chip, association chip, wireless communication chips, Beidou navigation chip, channel selecting chip, electricity
Source control module.Master chip is responsible for process and the Platform communication of vehicle data, vehicle data is passed through communication and presses friendship
Logical portion relevant laws and regulations protocol requirement, is uploaded to service platform.Association's chip is responsible for the collection of vehicle data and system power dissipation controls, association
Chip is communicated with master chip, for coordinating phase by i2c (inter-integrated circuit, i2c bus) bus
Close control strategy.Master chip, association's chip all can be controlled to wireless communication chips and Beidou navigation chip, by channel selecting
Chip realizes related control strategies, by for power-supplying circuit, the control of communication link and switching, realizing system power dissipation
Dynamic regulation is it is ensured that device meets the related request of regulation.
As shown in figure 1, two-way communication is carried out by i2c bus between master chip and association's chip, be used for realizing master chip and
The amphicheirality of data communication guarantee chip chamber data transfer between association's chip, high efficiency, stability,；Association's chip passes through gpio
(general purpose input output, universal input/output) control passage selects chip and energy supply control module；Electricity
Source control module can input according to different gpio, and master chip, wireless communication chips, Beidou navigation chip are powered controlling
System；Channel selecting chip can input according to different gpio, switches uart (universal asynchronous receiver/
Transmitter, universal synchronous/asynchronous receiving-transmitting transmitter) communication path, to realize master chip and to assist chip for radio communication
The Control on Communication power of chip and Beidou navigation chip, wherein, master chip all can be communicated with server platform with assisting chip, when
When main, association's chip works simultaneously, platform data communication is responsible for by master chip；When only association's chip operation, it is responsible for by association's chip
Platform data communicates, and communicates with service platform.
As shown in Fig. 2 association's chip is upon power-up of the system, the control of wireless communication chips and Beidou navigation chip can be obtained first
System power, the electrifying timing sequence that content includes chip controls and initialization operation；Next, the detection acc power supply (electricity of automobile
Source) whether go up electricity；If upper electricity, enter normal mode, otherwise enter low-power consumption mode.Under normal mode, it is release first
Wireless communication chips are weighed with Beidou navigation chip controls, and content includes switching and the chip mode control that uart gangs up；Complete
After becoming release, initialize master chip, content includes on master chip electric control on electric control and peripheral circuit；Master chip is waited to open
Dynamic mode request, receives request and shows that master chip is initialized and start to complete, respond immediately to start-up mode, and enter with main
Chip communication；Otherwise, reinitialize master chip；When assisting chip to communicate with master chip, whether detection acc signal is effective；Have
Continue during effect to detect whether to receive Restart Signal；When acc is invalid, sends Restart Request to master chip immediately, receiving confirmation
After reply, disconnect master chip power supply and associated peripheral circuits；When acc is effective, whether effectively to check heartbeat data, heartbeat data
When invalid, disconnect master chip power supply and associated peripheral circuits immediately, reacquire chip controls power.Under low-power consumption mode, first
Complete and Platform communication task, after the completion of communication, enter low-power consumption mode, its content includes for wireless communication chips entering chip
Low-power consumption mode, by Beidou navigation chip power cut off, association chip enter low-power consumption mode, simultaneously start low-power consumption timing
Device, after timer expired, restarts each module of wake-up, and obtains chip controls power again.
As shown in figure 3, master chip, after association's chip power supply wakes up, completes master chip initialization first, content includes assisting
Chip is registered and is initialized to the i2c device driver as linux；Next, obtaining wireless communication chips and Beidou navigation core
The control of piece, content includes both register and are initialized as the char device driver device of linux；After the completion of facility registration,
Pass through i2c communication mode immediately, send start-up mode request, and wait association's chip to reply.After receiving reply, judge to start mould
Formula, and enter in corresponding operational mode, operational mode includes off-line test pattern, system recovery or upgrade mode, normal work
Operation mode, low-power consumption start-up mode, fault diagnosis model.After reply exceedes request number of times, directly display abnormal failure simultaneously automatically
Enter fault diagnosis model.Under each pattern, all can detect whether to need to restart the request of system, once request occurs, immediately
Stop current task, and keep related data；Complete after preparation restarts work, to send Restart Request to association's chip, by master
Chip, association chip communication, realize the switching at runtime of multi-operation mode, simultaneously ensure master chip run stability with can recover
Property.
In a kind of further embodiment, master chip adopts linux operating system, provides with running for application and development
Reliable, stable running environment；Association's chip adopts low-power consumption, 16 single-chip microcomputers of tradition of high stability, when management system is powered
Sequence and the control of other chip；I2c communication mode is adopted, communication mode compares traditional uart between master chip and association's chip
Communication is more rapid, more reliable；Association's chip judges mode of operation by acc power supply, and mode of operation is divided into normal mode and low work(
Two kinds of consumption pattern；Association's chip can pass through the power supply of gpio independent control wireless communication chips, Beidou navigation chip and master chip
Circuit, changeable wireless communication chips, the communication port of Beidou navigation chip simultaneously；Association's chip can pass through i2c passage, controls master
The operational mode of chip system, master chip again may be by the operational mode that i2c corridorbarrier function restarts rear master chip next time；
Master chip can notify association's power supply to peripheral chip for the chip according to different operational modes and operation task, by i2c communication mode
It is controlled, controlled with realizing dynamic system power dissipation；Master chip and association's chip chamber, by heartbeat data packets, to maintain system
Normal work, when master chip occurs the system failure, association's chip can be monitored and instant recovery system；When association there is system in chip
During fault, master chip can be monitored and be shown fault message in time.
Hereinafter, the working method of the present invention is shown further by embodiment:
Embodiment one:
Patent Big Dipper termination of the present invention is arranged on vehicle, connects storage battery and powers and acc power supply signal.
After connecting storage battery, assist electric on chip and bring into operation, now vehicle is not lighted a fire, acc no signal；As shown in Fig. 2 association
Chip obtains wireless communication chips and the control of Beidou navigation chip, and completes the initialization to them；Acc signal is detected
Afterwards, carry out and server platform communications status；After the completion of communication task, close Beidou navigation chip power, control radio communication
Chip enters low-power consumption mode, jumps out communication task, association's chip actively enters low-power consumption mode, and starts low-power consumption timing simultaneously
Device, waits time out event to occur；After completing time-out, jump to acc signal detection module again, repeat said process.
After vehicle ignition, acc power output signal；Association chip detection arrive acc power supply signal export effective when, release immediately
Wireless communication chips of being rivals in a contest and the control of Beidou navigation chip；Meanwhile, initialization master chip and associated peripheral circuits, enter etc.
State to be received；After the start-up mode request assisting chip to be successfully received master chip transmission, respond immediately to master chip corresponding
Start-up mode, and actively enter data receiver and sending mode.
After vehicle ignition, after association's chip successful initialization master chip, in master chip, linux operating system brings into operation；
In Linux system initialization procedure, set including i2c device driver, wireless communication module device driver, Beidou navigation module
Standby driver completes registration and initialization in interior device driver.Master chip sends start-up mode to association's chip immediately please
Ask, and wait association's chip to reply.Association's chip start-up mode back to normal, after master chip judges start-up mode, starts normal mode
Program.
When master chip enters normal mode, master chip adopts 5 seconds heartbeat datas once with assisting chip chamber, by master chip
Send, the mode that association's chip is replied；When association's chip receives heartbeat data time-out, illustrate that master chip system occurs abnormal, assist chip
Master chip will be restarted immediately, and resume waiting for master chip startup and complete；Association's chip is in addition to receiving from master chip data, also negative
Duty collection vehicle data, and it is sent to master chip process.
After vehicle stall, acc power output signal lost efficacy；Association's chip detection arrive the output of acc power supply signal invalid when, vertical
Master chip is notified to carry out restarting preparation；Master chip, after receiving reset command, interrupts current task and protects significant data；
After master chip is restarted and is ready to complete, respond immediately to confirm reset command to association's chip；After association's chip is confirmed order, disconnect master
Chip power, and regain chip controls power, reenter acc detection state.
Embodiment two:
The present embodiment is essentially identical with above-described embodiment, and after vehicle ignition, master chip carries out normal mode of operation, and transports
Row normal procedure；Program receives the remote upgrade bag program that server issues；After completing AKU download, send out to association's chip
Send the order of system recovery or upgrade mode；After association's chip receives request, preserve the flag bit of corresponding start-up mode, and disconnect
Master chip power supply, reinitializes master chip；As shown in figure 3, according to control flow, master chip will enter system recovery or upgrading
Pattern；In the same manner, master chip can be made to enter off-line test pattern, normal startup mode, low-power consumption start-up mode, fault diagnosis mould
Formula.
Employ the Big Dipper termination based on multi-chip collaborative work and the control method in this invention, by multi-chip
Collaborative work ensure that the high-performance of termination, strong autgmentability, the performance of low-power consumption；Realize the dynamic management of system power dissipation with
Control and the management of multi-operation mode and switching, strengthen the feature of main control chip, have self-diagnosing function it is ensured that system
Stability and system self reover ability；And communicate at a high speed and stablize, be with a wide range of applications.
In this description, the present invention is described with reference to its specific embodiment.But it is clear that still can make
Various modifications and alterations are without departing from the spirit and scope of the present invention.Therefore, specification and drawings be considered as illustrative
And it is nonrestrictive.
Claims (13)
1. a kind of Big Dipper termination based on multi-chip collaborative work is it is characterised in that described device includes:
Master chip, for processing vehicle data, and is communicated with service platform；
Association's chip, for collection vehicle data, described vehicle data is sent to described master chip, and the work(of control system
Consumption, described association's chip is in communication with each other with described master chip；
Communication selects chip, for the signal switching communication path according to described association's chip, realizes described master chip and association
Chip for the Control on Communication power of wireless communication chips and Beidou navigation chip alternately, respectively with described association's chip and described
Master chip be in communication with each other；
Energy supply control module, for powering for described wireless communication chips, Beidou navigation chip and master chip, described power supply
Control module supplies to electrically connect with described wireless communication chips, Beidou navigation chip and master chip respectively, and receives from described
Association chip signal；
Wireless communication chips and Beidou navigation chip, this wireless communication chips and Beidou navigation chip are all selected with described communication
Chip is in communication with each other.
2. the Big Dipper termination based on multi-chip collaborative work according to claim 1 is it is characterised in that described association
Chip is in communication with each other by i2c bus with described master chip.
3. the Big Dipper termination based on multi-chip collaborative work according to claim 1 is it is characterised in that described master
Chip is the processor chips that can run linux operating system.
4. the Big Dipper termination based on multi-chip collaborative work according to claim 1 is it is characterised in that described association
Chip is 16 singlechip chips.
5. a kind of association's core of the Big Dipper termination based on multi-chip collaborative work for controlling the device described in claim 1
Piece control method is it is characterised in that described method comprises the following steps:
(1) open described Big Dipper termination, power for described Big Dipper termination device；
(2) association's chip obtains control；
(3) the association's chip described in judges whether to receive power supply signal, if it is, continuing step (4), otherwise, continues step (5)；
(4) control is given master chip by the association's chip described in, continues step (6)；
(5) enter row data communication with service platform, and enter low-power consumption mode, continue step (2)；
(6) master chip described in enters working condition, and meanwhile, described association's chip keeps communicating with described master chip；
(7) after receiving and restarting confirmation, disconnect the power supply of described master chip, continue step (2).
6. association's chip controls method of the Big Dipper termination based on multi-chip collaborative work according to claim 5, its
It is characterised by, described step (4) comprises the following steps:
(4-1) the association's chip release control power described in；
(4-2) master chip described in is initialized；
(4-3) the association's chip described in waits described master chip to send start-up mode request；
(4-4) judge whether described association's chip receives described start-up mode request, if it is, continuing step (4-5), no
Then, continue step (4-6)；
(4-5) send start-up mode to described master chip to reply, continue step (6)；
(4-6) judge whether described start-up mode request is overtime, if it is, continuing step (4-2), otherwise, continues step (4-
3).
7. association's chip controls method of the Big Dipper termination based on multi-chip collaborative work according to claim 5, its
It is characterised by, described step (5) comprises the following steps:
(5-1) communicated with platform data；
(5-2) the association's chip described in judges whether communication completes, if it is, continuing step (5-3), otherwise, continues step (5-
1)；
(5-3) low-power consumption mode, the power supply of the described Beidou navigation chip of cut-out are entered；
(5-4) timing is carried out to low-power consumption mode；
(5-5) the association's chip described in judges whether the time of low-power consumption mode is overtime, if it is, continuing step (2), otherwise, continues
Continuous step (5-4).
8. association's chip controls method of the Big Dipper termination based on multi-chip collaborative work according to claim 5, its
It is characterised by, between described step (6) and step (7), specifically include following steps:
(6-1) keep communicating with described master chip；
(6-2) the association's chip described in judges that whether effectively described power supply signal, if it is, continuing step (6-3), otherwise, continues
Continuous step (6-4)；
(6-3) the association's chip described in judges whether to receive Restart Request, if it is, continuing step (6-8), otherwise, continues step
(6-7)；
(6-4) the association's chip described in sends Restart Request to described master chip；
(6-5) the association's chip described in judges whether to receive restarts confirmation from described master chip, if it is, continuing step
(6-a), otherwise, continue step (6-6)；
(6-6) whether the association's chip described in judges to wait the time restarting confirmation overtime, if it is, continuing step (6-8), no
Then, continue step (6-5)；
(6-7) the association's chip described in judges whether to receive heartbeat data, if it is, continuing step (6-1), otherwise, continues step
(6-8)；
(6-8) disconnect the power supply of described master chip, continue step (2).
9. a kind of master chip control method of the Big Dipper termination based on multi-chip collaborative work, the method and claim 1
Described association's chip controls method is worked in coordination with and is carried out it is characterised in that described master chip control method comprises the following steps:
(8) master chip described in is initialized, and obtains control；
(9) send start-up mode request to described association's chip；
(10) master chip described in enters working condition, and real-time detection is the need of restarting, if it is, subsequent steps (11)
(11) send Restart Request to described association's chip, and prepare to restart.
10. the master chip control method of the Big Dipper termination based on multi-chip collaborative work according to claim 9, its
It is characterised by, described master chip is initialized, particularly as follows:
Described association's chip is registered and is initialized to the i2c device driver as linux by described master chip.
The master chip control method of 11. Big Dipper termination based on multi-chip collaborative work according to claim 9, its
It is characterised by, between described step (10) and step (11), specifically include following steps:
(10-1) judge whether that receiving startup request replys, if it is, continuing step (10-4), otherwise, continues step (10-
2)；
(10-2) judging that the number of times handss sending startup request are no and exceed setting value, if it is, continuing step (10-3), otherwise, continuing
Continuous step (9)；
(10-3) show abnormal failure, open fault diagnosis model, continue step (10-5)；
(10-4) judge start-up mode, and open corresponding start-up mode；
(10-5) judge that master chip, the need of restarting, if it is, continuing step (11), otherwise, continues step (10-4).
The master chip control method of 12. Big Dipper termination based on multi-chip collaborative work according to claim 11,
It is characterized in that, described start-up mode includes off-line test pattern, system recovery or upgrade mode, normal mode of operation, low
Power consumption start-up mode and fault diagnosis model.
The master chip control method of 13. Big Dipper termination based on multi-chip collaborative work according to claim 9, its
It is characterised by, described preparation is restarted, specifically include following steps:
(11-1) master chip described in stops current task, and preserves operational data；
(11-2) send to described association's chip and restart confirmation.
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