CN102055802A - Driver behavior monitoring method and device - Google Patents

Abstract

The invention discloses a driver behavior monitoring method and a driver behavior monitoring device. Automobile running information is acquired in real time by fully utilizing an automobile controller area network (CAN) bus so that the behavior of a driver can be judged, and then the automobile running information is wirelessly transmitted to a data center server for estimation so that the specification degree of the behavior of the driver is intuitively reflected in a score form; and the method and the device support a client to access the center server by using terminal equipment, and can acquire the behavior data of the driver at any time and any place so as to provide basis for education specification for the driver and finally achieve the effects of saving energy and reducing emission.

Description

Drivers ' behavior monitoring method and device

Technical field

The present invention relates to a kind of drivers ' behavior monitoring method and device, particularly a kind of drivers ' behavior monitoring method and device that is applied to passenger traffic company.

Background technology

Along with China's modernization process, automobile become people work the life in indispensable.And along with automobile more and more uses, energy problem highlights gradually; Along with the continuous exhaustion of petroleum resources, it is precious that the energy seems all the more.The China's oil utilization ratio is low, serious waste phenomenon.China's per GDP consumption of petroleum and the oil consumption of motor vehicle per 100 km are higher more than 20% than developed country.Present China carbon monoxide, the nitrogen oxide 40% or more of big city more than 80% is from automotive emission.So the requirements of the times people begin automobile is carried out various improvement, to reach energy-conservation effect.But people can ignore a bit usually, the operation lack of standardization of automobile are tended to increase the energy consumption of automobile.Such as frequent unexpected acceleration, the anxious waste that stops etc. all can to cause the energy.Especially concerning some passenger traffic companies, the oil consumption of motorbus is original just high, if traffic accident not only appears in driver's operation lack of standardization easily, and for also very serious in the increase of energy consumption.And drivers ' behavior can't objectively be estimated all the time, even estimate at the driving behavior result, does not also have sufficient convincingness and fairness.If the driver forms the good driving habits of energy-conserving and environment-protective, play an active part in energy-saving and emission-reduction, in driving procedure, guaranteeing under the safe situation, gently step on the gas, touch on the brake less, idling flameout, use air conditioning for automobiles less, can significantly reduce the oil consumption of motor vehicle per 100 km, thereby reduce exhaust emissions.

Summary of the invention

The objective of the invention is to, a kind of drivers ' behavior monitoring method and device are provided.It can be by to the monitoring of the drivers ' behavior behavior of driving with the standard driver, thereby reaches the effect of energy-saving and emission-reduction.

Technical scheme of the present invention: the drivers ' behavior monitoring method is characterized in that described method comprises:

The switching value and the pulsed quantity signal of signal on the collection automobile CAN-bus and automobile equipment output; Automobile CAN-bus, full name " controller Area Network ", promptly controller local area network is one of present most widely used bus.Its information transmitted timeliness is strong, and the reliability height can also be resisted site environment and disturb.Signal on the CAN bus comprises rotating speed, moment of torsion, battery tension, engine oil temperature, engine oil pressure, atmospheric pressure, inlet temperature, coolant temperature, fuel oil accumulation use amount, engine running time, DM1 diagnostic trouble code and instantaneous oil consumption etc.; The switching value of automobile equipment output comprises that brake, Qianmen, Zhong Men, air-conditioning, heater, shoe brake wearing and tearing are reported to the police, sky is filtered warning, retarder, clutch state and reversing etc.; The pulsed quantity of equipment output comprises the speed of a motor vehicle and rotating speed etc.

The signal that collects in the above-mentioned steps is arrived data center server by wireless network transmissions;

Data center server filters out improper signal by comparison in the signal that obtains, and add up number of times and/or the duration that draws various improper signals, and with the number of times of improper signal and duration as the improper signal of weights quantify, draw this driver's behavioural norm degree on the amount intuitively;

Data center server links to each other with user terminal by the Internet, the quantitative information that counts in the user-accessible data center server, thus obtain of the drive behavior of the foundation of this driver's behavior of assessment with the standard driver.

In the aforesaid drivers ' behavior monitoring method, described improper signal comprises that the driving of corresponding overspeed of vehicle, neutral gear slide, urgency is quickened, anxious deceleration, engine overrun, ABS action and the CAN bus signals of ultra-long time driving and switching value and the pulsed quantity signal that automobile equipment is exported.

In the aforesaid drivers ' behavior monitoring method, with the signal that collects by wireless network transmissions before data center server, the signal that collects is carried out digitized processing.

Realize the drivers ' behavior monitoring device of preceding method, it is characterized in that it comprises:

Car-mounted terminal is used to gather the device signal and switching value signal on the automobile equipment and the pulsed quantity signal that hang on the automobile CAN-bus, is connected into the Internet by wireless network;

Data center server is used to screen and add up the number of times and/or the duration of improper signal, and with the number of times of improper signal and duration as the improper signal of weights quantify, link to each other with the Internet by collecting and controlling gateway;

User terminal is used for the visit data central server, links to each other with data center server by the Internet;

In the aforesaid drivers ' behavior monitoring device, described car-mounted terminal comprises the CAN controller that links to each other with automobile CAN-bus, with the IO module that switching value on the automobile equipment links to each other with the pulsed quantity signal source, the CAN controller all links to each other with processor with the IO module, and processor links to each other with wireless transport module.

In the aforesaid drivers ' behavior monitoring device, described wireless transport module is GPRS module, EVDO module, WCDMA module, TD-SCDMA module or WiMAX module.

Compared with prior art, the present invention makes full use of automobile CAN-bus, obtain automobilism information in real time, thereby can judge driver's behavior, carry out evaluation process by being wirelessly transmitted to data center server again, embody the standardized degree of drivers ' behavior with fractional form intuitively, and the present invention supports the client to use terminal equipment that central server is conducted interviews, can obtain the drivers ' behavior data whenever and wherever possible, thereby have, finally reach the effect of energy-saving and emission-reduction according to the driver is carried out educational standards.

Description of drawings

Fig. 1 is an apparatus structure schematic diagram of the present invention.

Mark in the accompanying drawing: 1-car-mounted terminal, 2-data center server, 3-user terminal, 4-CAN controller, 5-IO module, 6-processor, 7-wireless transport module, 8-collecting and controlling gateway.

Embodiment

The present invention is further illustrated below in conjunction with drawings and Examples, but not as the foundation to the present invention's restriction.

Embodiment

The drivers ' behavior monitoring method is characterized in that, described method comprises:

The switching value and the pulsed quantity signal of signal on the collection automobile CAN-bus and automobile equipment output; Automobile CAN-bus, full name " controller Area Network ", promptly controller local area network is one of present most widely used bus.Its information transmitted timeliness is strong, and the reliability height can also be resisted site environment and disturb.Signal on the CAN bus comprises rotating speed, moment of torsion, battery tension, engine oil temperature, engine oil pressure, atmospheric pressure, inlet temperature, coolant temperature, fuel oil accumulation use amount, engine running time, DM1 diagnostic trouble code and instantaneous oil consumption etc.; The switching value of automobile equipment output comprises that brake, Qianmen, Zhong Men, air-conditioning, heater, shoe brake wearing and tearing are reported to the police, sky is filtered warning, retarder, clutch state and reversing etc.; The pulsed quantity of equipment output comprises the speed of a motor vehicle and rotating speed etc.

The signal that collects in the above-mentioned steps is arrived data center server by wireless network transmissions;

Data center server filters out improper signal by comparison in the signal that obtains, and add up number of times and/or the duration that draws various improper signals, and with the number of times of improper signal and duration as the improper signal of weights quantify, draw this driver's behavioural norm degree on the amount intuitively; For example established full marks 100 minutes, and whenever received the improper signal that once representative drives over the speed limit and from 100 minutes, deduct (n branch * improper signal duration), after one month, statistics residue score value, the residue score value is low more, and drivers ' behavior is lack of standardization more.

Data center server links to each other with user terminal by the Internet, the quantitative information that counts in the user-accessible data center server, thus obtain of the drive behavior of the foundation of this driver's behavior of assessment with the standard driver.

Described improper signal comprises that the driving of corresponding overspeed of vehicle, neutral gear slide, urgency is quickened, anxious deceleration, engine overrun, ABS action and the CAN bus signals of ultra-long time driving and switching value and the pulsed quantity signal that automobile equipment is exported.Can set the threshold speed of a science, when the vehicle speed signal that receives surpasses this threshold value, this vehicle speed signal is the improper signal of hypervelocity driving, in like manner can judge other improper signals by the threshold value of setting science.Wherein ABS action is directly concluded by switching value, and each ABS begins to move the switching value exported and is the improper signal of ABS action.

With the signal that collects by wireless network transmissions before data center server, the signal that collects is carried out digitized processing.

The fare coalignment principle that the present invention is based on the CAN bus is: the fare coalignment is installed on the vehicle, this device links to each other with other equipment by the CAN bus, follow the SAEJ1939CAN bus protocol, gather the CAN data in real time, and the data of gathering are sent todata center server 2 by wireless transport module 7 (as GPRS or 3G), these data is stored indata center server 2 records.Described SAEJ1939 agreement be AIAE American institute of automobile engineers issue be the vehicle network serial communication and the control protocol of core with the CAN bus, the SAEJ1939 agreement is based on the CAN2.0B agreement, communication speed reaches as high as 250kb/s.

Realize the drivers ' behavior monitoring device of preceding method, as shown in Figure 1, it comprises:

Car-mountedterminal 1 is used to gather the device signal and switching value signal on the automobile equipment and the pulsed quantity signal that hang on the automobile CAN-bus, is connected into the Internet by wireless network;

Data center server 2 is used to screen and add up the number of times and/or the duration of improper signal, and with the number of times of improper signal and duration as the improper signal of weights quantify, link to each other with the Internet by collecting and controlling gateway (8); Improper signal comprises that the driving of corresponding overspeed of vehicle, neutral gear slide, urgency is quickened, anxious deceleration, engine overrun, ABS action and the CAN bus signals of ultra-long time driving and switching value and the pulsed quantity signal that automobile equipment is exported.

User terminal 3 is used for visit datacentral server 2, links to each other withdata center server 2 by the Internet.

Described car-mountedterminal 1 comprises theCAN controller 4 that links to each other with automobile CAN-bus, and with theIO module 5 that switching value on the automobile equipment links to each other with the pulsed quantity signal source,CAN controller 4 all links to each other withprocessor 6 withIO module 5, andprocessor 6 links to each other withwireless transport module 7.

Describedwireless transport module 7 is GPRS module, EVDO module, WCDMA module, TD-SCDMA module or WiMAX module.Describedprocessor 6 can adopt 2410 chips and the modern memory chip of the embedded processing chip ARM9 series of ARM company to be used incombination.Processor module 6 also can connect memory module, and it is the FLASH storage card of K9F1208UOM that memory module can adopt the model of 64M.Wireless transport module 7 utilizes the transmission means of GPRS, the GTM900-C module that adopts Huawei Company to produce.

Existing passenger vehicle with hanging equipments such as ABS, ECAS (electroni-controlled air suspension), CAN instrument on the CAN bus, the equipment that hangs in the present embodiment on the CAN bus mainly is engine components, and the CAN data of collection comprise the speed of a motor vehicle, engine speed, Engine Inlet Temperature, engine motor oil pressure and engine cooling water temperature.

Processor 6 carries out poll for processor paired pulses amount, perhaps interrupts, counting, timing collection and record data.Poll be finger processor periodically successively one by one inquiry be connected to the pulsed quantity signal; Interruption is meant when processor finds that signal changes, and such as jumping to 1 or jump to 0 from 1 from 0, then calculates an interruption; Timing is meant specifies certain hour to gather a signal; Counting is meant to be counted the pulse number of the pulsed quantity signal in the certain hour.

For the collection of this pulsed quantity signal of vehicle speed signal, can treateddevice 6 paired pulses to count, and multiply by a coefficient according to computation rule and obtain the speed of a motor vehicle, umber of pulse is many more in the certain hour, illustrates that then the speed of a motor vehicle is fastmore.Processor 6 records memory module with vehicle speed data then, and is transferred todata center server 2 by wireless transport module.

Collection for this pulsed quantity signal of engine rotational speed signal,processor 6 can receive tach signal, be not real-time or time recording, but tach signal is analyzed, when finding rotation speed change greater than default limit value, just this rotary speed information is recorded memory module, and be transferred todata center server 2 by wireless transport module.Rotary speed information comprises rotating speed size, acquisition time etc.

With the engine motor oil pressure signal is the collection that representative illustrates analog signals: the engine oil pressure signal of sensor acquisition is handled after the CAN bus is transferred to theprocessor 6 of car-mounted terminal with digital form by Engine ECU,processor 6 calculates the engine oil pressure value by formula, and a series of engine oil pressure value is transferred todata center server 2 by wireless transport module,data center server 2 records and arrangement are exported at last with report form.

At present, the bus engine ECU of standard (Electronic Control Unit, electronic control unit) has the CAN bus, and all follows the SAEJ1939 bus protocol.

Claims (6)

1. the drivers ' behavior monitoring method is characterized in that, described method comprises:

The switching value and the pulsed quantity signal of signal on the collection automobile CAN-bus and automobile equipment output;

The signal that collects in the above-mentioned steps is arrived data center server by wireless network transmissions;

Data center server filters out improper signal by comparison in the signal that obtains, and add up number of times and/or the duration that draws various improper signals, and with the number of times of improper signal and duration as the improper signal of weights quantify, draw this driver's behavioural norm degree on the amount intuitively;

Data center server links to each other with user terminal by the Internet, the quantitative information that counts in the user-accessible data center server, thus obtain of the drive behavior of the foundation of this driver's behavior of assessment with the standard driver.

2. drivers ' behavior monitoring method according to claim 1, it is characterized in that described improper signal comprises that the driving of corresponding overspeed of vehicle, neutral gear slide, urgency is quickened, anxious deceleration, engine overrun, ABS action and the CAN bus signals of ultra-long time driving and switching value and the pulsed quantity signal that automobile equipment is exported.

3. drivers ' behavior monitoring method according to claim 1 is characterized in that, with the signal that collects by wireless network transmissions before data center server, the signal that collects is carried out digitized processing.

4. realize the drivers ' behavior monitoring device of the described method of the arbitrary claim of claim 1～3, it is characterized in that it comprises:

Car-mounted terminal (1) is used to gather the switching value signal and the pulsed quantity signal of the output of signal on the automobile CAN-bus and automobile equipment, is connected into the Internet by wireless network;

Data center server (2) is used to screen and add up the number of times and/or the duration of improper signal, and with the number of times of improper signal and duration as the improper signal of weights quantify,, link to each other with the Internet by collecting and controlling gateway (8);

User terminal (3) is used for visit data central server (2), links to each other with data center server (2) by the Internet.

5. drivers ' behavior monitoring device according to claim 4, it is characterized in that, described car-mounted terminal (1) comprises the CAN controller (4) that links to each other with automobile CAN-bus, the IO module (5) that links to each other with the pulsed quantity signal source with switching value on the automobile equipment, CAN controller (4) all links to each other with processor (6) with IO module (5), and processor (6) links to each other with wireless transport module (7).

6. drivers ' behavior monitoring device according to claim 5 is characterized in that: described wireless transport module (7) is GPRS module, EVDO module, WCDMA module, TD-SCDMA module or WiMAX module.

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