CN105242612A - Vehicle-mounted display terminal with real-time data storage function and method thereof - Google Patents
Vehicle-mounted display terminal with real-time data storage function and method thereof Download PDFInfo
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- CN105242612A CN105242612A CN201510747271.8A CN201510747271A CN105242612A CN 105242612 A CN105242612 A CN 105242612A CN 201510747271 A CN201510747271 A CN 201510747271A CN 105242612 A CN105242612 A CN 105242612A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0428—Safety, monitoring
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/26—Pc applications
- G05B2219/2637—Vehicle, car, auto, wheelchair
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Abstract
The invention discloses a vehicle-mounted display terminal with a real-time data storage function. The vehicle-mounted display terminal comprises a master processor module, a storage module, a power supply conversion module, a bus communication module, a signal acquisition module, a display driving module and a human-computer interaction module. The storage function of real-time data is completed by adopting multiple storage media. Real-time storage of the operation data is completed via an FRAM in working, and the data are stored in a storage unit via a delay turn-off method when power is off. The storage function of the real-time data is completed without influencing security of an operating system so that the service life of the display terminal can be substantially enhanced, users can search and analyze system equipment operation state parameters anytime, system fault points can be positioned, the control strategy can be improved and production efficiency can be enhanced.
Description
Technical field
The invention belongs to vehicle-mounted display terminal field, particularly a kind of vehicle-mounted display terminal and method with real-time data memory function.
Background technology
Vehicle-mounted display terminal refers to that industrial occasions such as being arranged on mechanically moving, boats and ships, mine, down-hole carries out the important means of man-machine interaction: it is by devices interconnect such as fieldbus and Vehicle Controller, sensor, HMI such as CAN, serial ports, networks, resolve bus message, by field equipment state information by LCD display, show with the man-machine interface of close friend; Receive operator commands by the form such as button, touch-screen, instruction is sent out by bus, by the action of the device drives such as controller on-the-spot topworks, complete controlling functions.
That produces greatly along with industry gos deep into, display terminal not only requires to have status display function, and requirement can real-time storage bus data, handled easily People Analysis equipment operational factor, formulates optimum controling strategy, enhances productivity, when a failure occurs it, also can in very first time fault point, analysis of failure occurrence cause, evades occurring again of analogue.Existing vehicle-mounted display terminal only has a Large Copacity Nand Flash memorizer, and operating system, user application and data hold function all realize by writing data in NAND.Nand memory read-write number of times is limited, and read-write operation easily causes bad block to increase frequently, causes critical data to lose, and causes operating system to collapse, and even causes the damage of storage element device.And existing display terminal does not have time delayed turn-off function, and namely shutdown transient quits work, system data during power-off cannot be preserved, particularly unfavorable to positioning system failure cause.
Summary of the invention
The object of the present invention is to provide a kind of vehicle-mounted display terminal and the method with real-time data memory function.
Realizing technical solution of the present invention is: a kind of vehicle-mounted display terminal with real-time data memory function, comprise main processor modules, memory module, power transfer module, bus communication module, Collection method of knock signal module, driver module and human-computer interaction module, described memory module, power transfer module, bus communication module, Collection method of knock signal module, driver module is all connected with main processor modules with human-computer interaction module, wherein memory module is for storing data and information, power transfer module is used for providing power supply for whole terminal, and can turn off under the control of main processor modules, bus communication module is used for providing communication interface, the external information collected is transferred to main processor modules by Collection method of knock signal module, driver module works under the control of main processor modules, for driving display device.
Based on a method for storing real-time data for above-mentioned vehicle-mounted display terminal, be specially: during normal work, display terminal first writes needing the data of preserving in data cache module, and data are write completely and write in data memory module again; When display terminal power-off, main processor modules controls power transfer module and works on, and controls power transfer module and quit work after data being write data cache module or data memory module, and display terminal turns off, and data when completing power-off store.
Compared with prior art, its remarkable advantage is in the present invention: 1) the present invention adopts multi storage, extends memory capacity, can complete runtime data simultaneously and store under the prerequisite not affecting operating system security; 2) vehicle-mounted display terminal of the present invention after a loss of power, can complete power-off data and store, effectively save data by the mode of time delayed turn-off; 3) the present invention can significantly improve the serviceable life of display terminal, and facilitate user to search analytic system equipment running status parameter at any time, positioning system trouble spot, improves control strategy, enhances productivity; 4) vehicle-mounted display terminal structure of the present invention is simple, is convenient to promotion and implementation.
Below in conjunction with accompanying drawing, the present invention is described in further detail.
Accompanying drawing explanation
Fig. 1 is the theory diagram of vehicle-mounted display terminal of the present invention.
Fig. 2 is vehicle-mounted display terminal time delayed turn-off principle sketch of the present invention.
Embodiment
Composition graphs 1, Fig. 2, a kind of vehicle-mounted display terminal with real-time data memory function of the present invention, comprise main processor modules 1, memory module 2, power transfer module 3, bus communication module 4, Collection method of knock signal module 5, driver module 6 and human-computer interaction module 7, described memory module 2, power transfer module 3, bus communication module 4, Collection method of knock signal module 5, driver module 6 is all connected with main processor modules 1 with human-computer interaction module 7, wherein memory module 2 is for storing data and information, power transfer module 3 is for providing power supply for whole terminal, and can turn off under the control of main processor modules 1, bus communication module 4 is for providing communication interface, the external information collected is transferred to main processor modules 1 by Collection method of knock signal module 5, driver module 6 works under the control of main processor modules 1, for driving display device.
Described memory module 2 comprises program storage block 2-1, data cache module 2-2 and data memory module 2-3, described program storage block 2-1 for store operating system, user application, user configuration information and other do not need the data of frequent amendment; Data cache module 2-2 is used for the data needing real-time storage in temporary transient storage running process; Data memory module 2-3 is used for store historical data.
Described program storage block 2-1 is nand memory, and data cache module 2-2 is FRAM ferroelectric memory, and data memory module 2-3 is EMMC storer.
Preferably, described program storage block 2-1 is 256MBNAND storer, and data cache module 2-2 is 1MBFRAM storer, and data memory module 2-3 is 16GBEMMC storer.
Described main processor modules 1 is the I.MX6 processor of Freesclae company.
Described power transfer module 3 comprises primary source conversion chip U1, first resistance R1, second resistance R2, 3rd resistance R3, 4th resistance R4, 5th resistance R5, 6th resistance R6, 7th resistance R7, 8th resistance R8, first diode V1, second diode V2, first NMOS tube D1, second NMOS tube D3 and the first PMOS D2, described first resistance R1 is connected with the second resistance R2, the two joint is as the VCC_ON interface of display terminal, this interface is connected with ignition switch, the other end of the second resistance R2 is by the 3rd resistance R3 ground connection, the other end of the second resistance R2 is also extremely connected with the G of the second NMOS tube D3, the S pole ground connection of the second NMOS tube D3, the D pole of the second NMOS tube D3 is connected with the GPIO_00 pin of main processor modules 1, the D pole of the second NMOS tube D3 is also connected with the VDD_3V3 level of terminal by the 4th resistance R4, the positive pole of another termination second diode V2 of the first resistance R1, the negative pole of the second diode V2 meets the enable pin EN of primary source conversion chip U1, the enable pin EN of primary source conversion chip U1 is simultaneously by the 8th resistance R8 ground connection, the input pin VIN of primary source conversion chip U1 is by the first electric capacity C1 ground connection, and input pin VIN connects Vehicular accumulator cell as the VCC interface of display terminal simultaneously, the negative pole of the second diode V2 is connected with the negative pole of the first diode V1 simultaneously, the positive pole of the first diode V1 connects the D pole of the first PMOS D2, the S pole of the first PMOS D2 connects VCC interface by the 6th resistance R6, another termination the 5th resistance R5 of the 6th resistance R6, the other end of the 5th resistance R5 is extremely connected with the G of the first PMOS D2, the G pole of the first PMOS D2 is extremely connected with the D of the first NMOS tube D1 simultaneously, the S pole ground connection of the first NMOS tube D1, the G pole of the first NMOS tube D1 is by the 7th resistance R7 ground connection, the G pole of the first NMOS tube D1 is connected with the GPIO_01 pin of main processor modules 1 simultaneously.
The model of described primary source conversion chip U1 is the TPS54560 chip of TI company, or other enable pin is the power conversion chip of high level.
Based on a method for storing real-time data for above-mentioned vehicle-mounted display terminal, be specially: during normal work, display terminal first writes needing the data of preserving in data cache module 2-2, data are write completely and are write in data memory module 2-3 again; When display terminal power-off, main processor modules 1 controls power transfer module 3 and works on, control power transfer module 3 after data being write data cache module 2-2 or data memory module 2-3 to quit work, display terminal turns off, and data when completing power-off store.
Of the present invention have in the vehicle-mounted display terminal of real-time data memory function, and user by calling api interface function, can complete the real-time storage function to key parameter.Described real-time data memory function comprise display terminal work time data storage function and power-off time data storage function.
The present invention selects I.MX6 processor to build main processor modules 1, selects FRAM as data buffer storage 2-2 space, and EMMC stores 2-3 space as data.During normal work, display terminal first writes needing the data of preserving in FRAM, data write full after again in monoblock write EMMC.During display terminal power-off, processor controls power transfer module 3 and works on, and control power transfer module 3 after pending data write FRAM or EMMC and quit work, display terminal turns off, and data when completing power-off store.
Real-time data memory of the present invention is by following circuit realiration, and the VCC_ON of display terminal connects ignition switch, and VCC_ON connects the EN enable pin of the primary source conversion chip U1 of power transfer module 3 by resistance R1, diode V2.VCC_ON connects the G pole of NMOS tube D3 by resistance R2, R3.The S pole ground connection of D3, D pole connects the VDD_3V3 level of power transfer module 3 by resistance R4, the GPIO input pin of the D pin connection handling device of D3.The GPIO output pin of processor connects the G pole of NMOS tube D1, and G pole is by resistance R1 ground connection, and the S pole ground connection of D1, D pole connects the G pole of PMOS D2.G pole, the S pole of D2 meet VCC respectively by resistance R5, R6, and VCC connects Vehicular accumulator cell.The D pole of D2 connects the EN pin of U1 by diode V1, EN is by resistance R8 ground connection.
Below in conjunction with embodiment, further detailed description is done to the present invention:
Embodiment 1
The present invention selects the I.MX6 processor of Freesclae company to build main processor modules 1, and select 256MBNAND storer to store 2-1 as program, 1MBFRAM is as data buffer storage 2-2, and 16GBEMMC stores 2-3 as data.NAND is connected by EMI interface with processor, is used for storing (SuSE) Linux OS and user application.FRAM is connected by SPI interface with processor, as data buffer storage, temporarily stores real time data.EMMC and processor, by uSDHC interface inter-link, are used for storing the real time data of monoblock write in FRAM.Bus communication module 4 refers to by bus forms such as CAN, RS232/485/422, network, USB, completes information interaction function with field controller, sensor equipment.Data acquisition module 5 refers to the display terminal input/output function of the GPIO ports-Extending by processor, can the direct status information of equipment such as collection site switch, relay, the mechanism action such as driving pump, valve.Status information of equipment, by LVDS interface driver LCD display, is shown with the form of friendly man-machine interface by forms such as histogram, virtual dial plate, electrical forms by driver module 6 and human-computer interaction module 7 finger processor; Operating personnel, by the mechanism operation such as button, touch-screen display terminal, send control command to controller by bus, complete the controlling functions to field apparatus.
FRAM can with the read-write operation of bus speed execution without time delay, and read or write speed is fast, and read-write number of times can reach 1,000,000,000 times, is 10000 times of NAND, to read and write 1 p.s., can reads and writes 31 years continuously.During normal work, first write needing the data stored in FRAM, data are write completely, data monoblock is sequentially written in jumbo EMMC, empty FRAM simultaneously, for the next memory cycle prepares, under solving the industrial occasions such as mechanically moving, boats and ships, to the requirement of real-time data memory during terminal works.
The primary power chip U1 of the power transfer module 3 of system is powered by VCC, and enable pin is effectively high.VCC and VCC_ON is by outside storage battery power supply, and difference is that VCC continues to have electricity, and VCC_ON connects ignition switch, may power-off at any time.After powering on, VCC_ON is powered to subsequent module by R1, V2 enable U1, U1, system worked well.Signal is inputed to processor by GPIO_00 by VCC_ON after R2, R3 dividing potential drop, and processor judges VCC_ON signal condition.When VCC_ON is high level, D3 conducting, processor detects GPIO_00 and is input as low level, and exporting control GPIO_01 is high level, drives D1, D2 conducting, and VCC assists the EN pin keeping U1 to be high level via R6, D2, V1.During power-off, VCC_ON dead electricity, processor detects and is input as high level to GPIO_00, data is write after in FRAM or EMMC, GPIO_01 output low level, and D1, D2 turn off, and EN pin is low level, and U1 turns off, whole system dead electricity.Complete the data hold function of shutdown transient.
As from the foregoing, the present invention adopts multi storage, extends memory capacity, can complete runtime data simultaneously and store under the prerequisite not affecting operating system security; Vehicle-mounted display terminal of the present invention after a loss of power, can complete power-off data by the mode of time delayed turn-off and store, effectively save data.
Claims (8)
1. one kind has the vehicle-mounted display terminal of real-time data memory function, it is characterized in that, comprise main processor modules (1), memory module (2), power transfer module (3), bus communication module (4), Collection method of knock signal module (5), driver module (6) and human-computer interaction module (7), described memory module (2), power transfer module (3), bus communication module (4), Collection method of knock signal module (5), driver module (6) is all connected with main processor modules (1) with human-computer interaction module (7), wherein memory module (2) is for storing data and information, power transfer module (3) is for providing power supply for whole terminal, and can turn off under the control of main processor modules (1), bus communication module (4) is for providing communication interface, the external information collected is transferred to main processor modules (1) by Collection method of knock signal module (5), driver module (6) works under the control of main processor modules (1), for driving display device.
2. the vehicle-mounted display terminal with real-time data memory function according to claim 1, it is characterized in that, described memory module (2) comprises program storage block (2-1), data cache module (2-2) and data memory module (2-3), described program storage block (2-1) for store operating system, user application, user configuration information and other do not need the data of frequent amendment; Data cache module (2-2) is for needing the data of real-time storage in temporary transient storage running process; Data memory module (2-3) is for store historical data.
3. the vehicle-mounted display terminal with real-time data memory function according to claim 2, it is characterized in that, described program storage block (2-1) is nand memory, and data cache module (2-2) is FRAM ferroelectric memory, and data memory module (2-3) is EMMC storer.
4. the vehicle-mounted display terminal with real-time data memory function according to claim 3, it is characterized in that, described program storage block (2-1) is 256MBNAND storer, data cache module (2-2) is 1MBFRAM storer, and data memory module (2-3) is 16GBEMMC storer.
5. the vehicle-mounted display terminal with real-time data memory function according to claim 1, is characterized in that, the I.MX6 processor that main processor modules (1) is Freesclae company.
6. the vehicle-mounted display terminal with real-time data memory function according to claim 1, is characterized in that, described power transfer module (3) comprises primary source conversion chip (U1), first resistance (R1), second resistance (R2), 3rd resistance (R3), 4th resistance (R4), 5th resistance (R5), 6th resistance (R6), 7th resistance (R7), 8th resistance (R8), first diode (V1), second diode (V2), first NMOS tube (D1), second NMOS tube (D3) and the first PMOS (D2), described first resistance (R1) is connected with the second resistance (R2), the two joint is as the VCC_ON interface of display terminal, this interface is connected with ignition switch, the other end of the second resistance (R2) is by the 3rd resistance (R3) ground connection, the other end of the second resistance (R2) is also extremely connected with the G of the second NMOS tube (D3), the S pole ground connection of the second NMOS tube (D3), the D pole of the second NMOS tube (D3) is connected with the GPIO_00 pin of main processor modules (1), and the D pole of the second NMOS tube (D3) is also connected with the VDD_3V3 level of terminal by the 4th resistance (R4), the positive pole of another termination second diode (V2) of the first resistance (R1), the negative pole of the second diode (V2) meets the enable pin EN of primary source conversion chip (U1), the enable pin EN of primary source conversion chip (U1) is simultaneously by the 8th resistance (R8) ground connection, the input pin VIN of primary source conversion chip (U1) is by the first electric capacity (C1) ground connection, and input pin VIN connects Vehicular accumulator cell as the VCC interface of display terminal simultaneously, the negative pole of the second diode (V2) is connected with the negative pole of the first diode (V1) simultaneously, the positive pole of the first diode (V1) connects the D pole of the first PMOS (D2), the S pole of the first PMOS (D2) connects VCC interface by the 6th resistance (R6), another termination the 5th resistance (R5) of 6th resistance (R6), the other end of the 5th resistance (R5) is extremely connected with the G of the first PMOS (D2), the G pole of the first PMOS (D2) is extremely connected with the D of the first NMOS tube (D1) simultaneously, the S pole ground connection of the first NMOS tube (D1), the G pole of the first NMOS tube (D1) is by the 7th resistance (R7) ground connection, the G pole of the first NMOS tube (D1) is connected with the GPIO_01 pin of main processor modules (1) simultaneously.
7. the vehicle-mounted display terminal with real-time data memory function according to claim 6, is characterized in that, the model of described primary source conversion chip (U1) is the TPS54560 chip of TI company.
8. the method for storing real-time data based on vehicle-mounted display terminal described in claim 1, it is characterized in that, be specially: during normal work, display terminal first writes in data cache module (2-2) by needing the data of preserving, data are write completely and are write in data memory module (2-3) again; When display terminal power-off, main processor modules (1) controls power transfer module (3) and works on, data are write data cache module (2-2) or data memory module (2-3) to control power transfer module (3) afterwards and quit work, display terminal turns off, and data when completing power-off store.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510747271.8A CN105242612A (en) | 2015-11-05 | 2015-11-05 | Vehicle-mounted display terminal with real-time data storage function and method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510747271.8A CN105242612A (en) | 2015-11-05 | 2015-11-05 | Vehicle-mounted display terminal with real-time data storage function and method thereof |
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| CN105242612A true CN105242612A (en) | 2016-01-13 |
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| CN201510747271.8A Pending CN105242612A (en) | 2015-11-05 | 2015-11-05 | Vehicle-mounted display terminal with real-time data storage function and method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108052289A (en) * | 2017-12-12 | 2018-05-18 | 深圳市创维软件有限公司 | Method, set-top box and the storage medium of data processing |
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