Background technique
The safety that vehicle (such as benz vehicle) with one-key start all has between VATS Vehicle Anti-Theft System and remote controler is recognizedCard, it includes installation computer controling box in the car, the control box have low frequencies module and high-frequency reception/transmitting module withAnd low frequencies module, high-frequency reception/transmitting module microcontroller are controlled and manage, it further include logical with vehicle computer controling boxThe vehicle remote control device of news, there is vehicle remote control device low frequency reception module corresponding with vehicle computer controling box and high frequency to send,Receiving module.The vehicle computer controling box verification process intrinsic to vehicle remote control device is the basis that the present invention relies on, all to haveThe vehicle of one-key start can all authenticate vehicle remote control device when executing starting vehicle moment or vehicle is closed the door, workedCheng Shi: driver is starting vehicle in a flash, and whether in the car vehicle computer controling box scans remote controler first.Vehicle computer controlBox hair processed first goes out one group of low frequency and high frequency sweep signal, if remote controler is in the car, remote controler just will receive low-frequency sweep signalWith high frequency sweep signal, then remote controler replys vehicle computer controling box with high-frequency signal, and vehicle computer controling box, which receives, to be come fromAfter the high frequency return signal of remote controler, high frequency confirmation message is issued, after remote controler receives, replys one group of data, vehicle computer controlAfter box processed receives, in the car, vehicle executes starting operation to official confirmation remote controler, conversely, stopping vehicle launch.It is being closed in vehicleIn a flash, whether vehicle computer controling box can also execute the similar certification to remote controler to door, to determine remote controler in vehicleIt is interior.
This structure makes the secure certification architecture of vehicle have two advantages, 1) bi-directional data certification is safer, and 2) it is distantDevice power saving is controlled, in the low frequency coverage area that remote controler is in vehicle, when car owner starts vehicle, remote controler receives vehicle computer controlBox processed issues low frequency and high-frequency signal, remote controler are waken up from suspend mode, carries out data authentication with vehicle；If remote controler does not existIn vehicle low frequency signal coverage area, will suspend mode enter super low-power consumption state.If vehicle computer controling box determines remote controlerIn the car, then start-up course is executed.
In general, vehicle is after car locking, in order to save storage battery electricity, vehicle Major Systems include computer controling box can enter it is lowPower consumption dormant state, suspend mode rear vehicle cannot do any movement.
Summary of the invention
The technical problem to be solved by the embodiment of the invention is that provide it is a kind of determine vehicle remote control device position circuit andMethod, so that can be usually and vehicle suspend mode in the case where determines remote controller position.
In order to solve the above-mentioned technical problem, the embodiment of the present invention proposes a kind of circuit for determining vehicle remote control device position,Including vehicle computer controling box and vehicle remote control device, it further includes signal processing device that the vehicle remote control device, which is two-way remote control,It sets, signal processing apparatus includes microcontroller, the low frequency signal transmitting module that communicates with vehicle remote control device, controls with vehicle computerThe low frequency signal receiving module of box communication, the high-frequency signal transmitting module that is communicated with vehicle computer controling box and vehicle remote control device andHigh-frequency signal receiving module；Low frequency signal transmitting module, low frequency signal receiving module, high-frequency signal transmitting module and high-frequency signalReceiving module connects microcontroller respectively.
It further, further include CAN bus module for external vehicle CAN bus network, CAN bus module and micro-controlDevice electrical connection processed.
Further, vehicle computer controling box includes that host microcontroller, host low frequency signal transmitting module and host are highFrequency signal reception/sending module.
Further, vehicle remote control device includes remote controler microcontroller, remote controler low frequency signal receiving module, remote controler heightFrequency signal reception/transmitting module.
Correspondingly, the embodiment of the invention also provides a kind of methods for determining vehicle remote control device position, applied to above-mentionedIn the circuit for determining vehicle remote control device position, comprising:
Step 1: signal processing apparatus receives and saves the low frequency and high frequency sweep signal of vehicle computer controling box sending, therefrom solvesCorresponding low-frequency data, high-frequency data and communication rule is precipitated, stores the low-frequency data, high-frequency data and communication rule；
Step 2: signal processing apparatus sends to vehicle remote control device and is restored by stored low-frequency data, high-frequency dataLow-frequency sweep signal and high frequency sweep signal；
Step 3: after vehicle remote control device receives the low-frequency sweep signal and high frequency sweep signal, replying high-frequency signal；LetterNumber processing unit such as receives the high-frequency signal of vehicle remote control device reply, then confirms vehicle remote control device near vehicle；Signal processingDevice such as can not receive the high-frequency signal of vehicle remote control device reply, then confirms vehicle remote control device far from vehicle；
Step 4: nearby such as confirmation remote controler, signal processing apparatus sends high frequency acknowledgement signal again, confirms vehicle remote control deviceIdentity, vehicle remote control device reply high frequency authentication signal with high frequency；Signal processing apparatus receives the height of vehicle remote control device high frequency replyAfter frequency authentication signal, vehicle remote control body part is confirmed.
Further, the high frequency acknowledgement signal is to calculate to obtain by the communication rule according to the high-frequency signal.
The embodiment of the present invention is stopped usually with vehicle by proposing a kind of circuit and method for determining vehicle remote control device positionWhen dormancy, vehicle remote controler independently can be constantly scanned, to know whether the car owner for carrying remote controler is close or leaves, and isThe intelligence of vehicle automatic lock vehicle when further exploitation carries the car owner of remote controler vehicle automatic unlocking when walking close to vehicle, leaves vehicleType comfortably enters the guarantee of system offer technology, and haves no need to change vehicle remote control device structure.
Specific embodiment
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phaseIt mutually combines, invention is further described in detail in the following with reference to the drawings and specific embodiments.
If directional instruction (such as up, down, left, right, before and after ...) is only used for explaining at certain in the embodiment of the present inventionRelative positional relationship, motion conditions etc. under one particular pose (as shown in the picture) between each component, if the particular pose is sent outWhen raw change, then directionality instruction also correspondingly changes correspondingly.
If in addition, the description for being related to " first ", " second " etc. in the present invention is used for description purposes only, and should not be understood asIts relative importance of indication or suggestion or the quantity for implicitly indicating indicated technical characteristic.Define as a result, " first ",The feature of " second " can explicitly or implicitly include at least one of the features.
FIG. 1 to FIG. 2 is please referred to, the circuit of the judgement vehicle remote control device position of the embodiment of the present invention includes the control of vehicle computerBox, vehicle remote control device and signal processing apparatus.
Vehicle remote control device is two-way remote control.Signal processing apparatus includes microcontroller, low frequency signal transmitting module, low frequencySignal receiving module, high-frequency signal transmitting module and high-frequency signal receiving module.Low frequency signal transmitting module and vehicle remote control deviceCommunication.Low frequency signal receiving module is communicated with vehicle computer controling box.High-frequency signal transmitting module and vehicle computer controling box andThe communication of vehicle remote control device；High-frequency signal receiving module is communicated with vehicle computer controling box and vehicle remote control device.Low frequency signal transmittingModule, low frequency signal receiving module, high-frequency signal transmitting module and high-frequency signal receiving module connect microcontroller respectively.The present inventionCleverly vehicle computer controling box is replaced to execute the scanning to vehicle remote control device with signal processing apparatus, wherein microcontroller is usedIn the working procedure for executing and managing each section, low frequency signal transmitting module is used to send LF1, LF2 reduction of storage,Low frequency signal receiving module is used to receive and store low-frequency sweep signal LF1, LF2 of vehicle computer controling box sending, high frequency letterNumber transmitting module is for emitting high-frequency signal RF1, RF3；High-frequency signal receiving module is for receiving and storing from vehicle computerThe high-frequency signal RF1 of box is controlled, high-frequency signal RF2, RF4 that remote controler is replied are received.
As an implementation, signal processing apparatus further includes the CAN bus mould for external vehicle CAN bus networkBlock, CAN bus module are electrically connected with microcontroller.CAN bus module is for obtaining vehicle bus information and publication bus line command.
As an implementation, vehicle computer controling box includes host microcontroller, host low frequency signal transmitting moduleWith host high-frequency signal reception/sending module.Host low frequency signal transmitting module and host high-frequency signal reception/sending module withHost microcontroller connection.
As an implementation, vehicle remote control device include remote controler microcontroller, remote controler low frequency signal receiving module,Remote controler high-frequency signal reception/transmitting module.Remote controler low frequency signal receiving module, remote controler high-frequency signal receive/emit mouldBlock is connect with remote controler microcontroller.
Because the communication data between every vehicle computer controling box and vehicle remote control device is different, of the inventionThe thing that signal processing apparatus is done first is exactly match with the vehicle remote control device of former vehicle, matching occur in vehicle computer controling box andWhen vehicle remote control device communicates, this communication process is completely captured (study) by signal processing apparatus of the invention, and is protectedLeave come, then therefrom parse useful low-frequency data and high-frequency data and communication rule, as signal processing apparatus withThe basis of vehicle remote control device independent communication.Signal processing apparatus of the invention is by the low-frequency data stored and high-frequency data by vehicleCommunication rule is communicated with vehicle remote control device between computer controling box and vehicle remote control device, signal processing device as shown in Figure 2The communication process between vehicle remote control device is set, wherein low-frequency sweep signal LF1, LF2 and high frequency sweep signal RF1 are from vehicleIt is won in communication process between computer controling box and vehicle remote control device and catches what (study) arrived, signal processing apparatus of the present invention is pressedThe sequence of Fig. 2 is sent to vehicle remote control device, if 3 meters or so of place, vehicle remote control device will reply height to remote controler near at handFrequency response high-frequency signal RF2, after the signal processing apparatus receives the high-frequency signal RF2 of vehicle remote control device reply, Jiu HuijinEnter formal authentication phase, issues high frequency acknowledgement signal RF3 to vehicle remote control device, RF3 is to convert out from RF2 by communication ruleCome, after vehicle remote control device receives RF3, replys authentication information RF4 with high frequency, so far, a communication process terminates.
Signal processing apparatus of the invention can scanning with complete independently to vehicle remote control device.The position of signal processing apparatusBetween vehicle computer controling box and vehicle remote control device.Signal processing apparatus is sent out when vehicle computer controling box is scanned remote controlerLow-frequency sweep signal LF1, LF2 and high frequency sweep signal RF1 out is received and stored, and passes through low frequency and high-frequency signal output par, cAnd LF1, LF2, RF1 of preservation are sent to by external output antenna (i.e. low frequency signal transmitting module, high-frequency signal transmitting module)Vehicle remote control device scans remote controler instead of former vehicle；Vehicle remote control device receives the low of simulation LF1, LF2 that signal processing apparatus is sentIt after frequency signal and high-frequency signal RF1, can be replied with high-frequency signal RF2, after signal processing apparatus receives RF2, issue high frequency confirmationSignal RF3 carry out secondary-confirmation, after receiving remote control, answers RF4, obtain to remote controler whether sentencing in scanning areaIt is disconnected.
The present invention realizes the data communication (dialogue) with the vehicle remote control device of former vehicle, and with former Che Wuguan (former vehicle suspend mode, originalVehicle is absent from the scene) under conditions of accomplish.Its significance lies in that: by the way that we can know former vehicle with vehicle remote control device communication (dialogue)Vehicle remote control device existence, or perhaps distance perception, and the precondition of the following Intelligent key seeks to perception car owner and isIt is no to leave or close to vehicle, the automatic car locking of next step be implemented, rise window or unlock；Signal processing apparatus is realized to remote controlThe independent communication of device, so that whether the position that vehicle in Low-power-consumptiodormancy dormancy, can still scan vehicle remote controler constantly is sweepingIt retouches in region, vehicle automatic unlocking when for vehicle remote control device close to vehicle, vehicle automatic lock vehicle offer technology is protected when leaving vehicleCard.
Referring to figure 2.~Fig. 3, the method for the judgement vehicle remote control device position of the embodiment of the present invention are applied to determine that vehicle is distantIn the circuit for controlling device position, including step 1 ~ step 4.
Step 1: signal processing apparatus receives and saves the low-frequency sweep signal LF1 of vehicle computer controling box sending, low frequencyScanning signal LF2 and high frequency sweep signal RF1, therefrom parses corresponding low-frequency data, high-frequency data and communication rule, storageThe low-frequency data, high-frequency data and communication rule.The communication rule is between vehicle computer controling box and vehicle remote control deviceCommunication rule.
Step 2: signal processing apparatus sends to vehicle remote control device and is restored by stored low-frequency data, high-frequency dataLow-frequency sweep signal LF1, the LF2 and high frequency sweep signal RF1 arrived.
Step 3: vehicle remote control device receives RF1 after described low-frequency sweep signal LF1, LF2 and high frequency sweep signal, returnsMultiple high-frequency signal RF2；Signal processing apparatus such as receives the high-frequency signal RF2 of vehicle remote control device reply, then confirms vehicle remote control deviceNear vehicle；Signal processing apparatus such as can not receive the high-frequency signal RF2 of vehicle remote control device reply, then has confirmed vehicle remote control deviceFar from vehicle；
Step 4: nearby such as confirmation remote controler, signal processing apparatus sends high frequency acknowledgement signal RF3 again, confirms vehicle remote controlBody part, vehicle remote control device receive and reply high frequency authentication signal RF4 with high frequency after high frequency acknowledgement signal RF3；Signal processing apparatusAfter the high frequency authentication signal RF4 for receiving the reply of vehicle remote control device high frequency, vehicle remote control body part is confirmed.
As an implementation, high frequency acknowledgement signal RF3 is to be drilled according to the high-frequency signal RF2 by the communication ruleIt obtains.
Fig. 2 is the timing diagram that signal processing apparatus scans remote controler, and signal processing apparatus exports antenna (i.e. by externalThe corresponding external output antenna part of low frequency signal transmitting module, high-frequency signal transmitting module) reduction low-frequency sweep signal LF1,LF2 and high frequency sweep signal RF1 is simultaneously sent to vehicle remote control device, the high-frequency signal RF2(signal that vehicle remote control device is replied after receivingThe every transmission single pass signal of processing unit, vehicle remote control device will reply after receiving), after signal processing apparatus receives RF2, meetingContinue to issue high frequency acknowledgement signal RF3 progress secondary-confirmation, signal processing apparatus receives the high-frequency signal of vehicle remote control device replyAfter RF4, illustrate with the former matched vehicle remote control device of vehicle (remote controler is close to vehicle) in scanning range, signal processing apparatus does not haveIt receives high frequency and replys or confirm failure, illustrate in remote controler no longer scanning range (remote controler leaves vehicle).
The low-frequency sweep signal and high frequency sweep signal of former vehicle are all to carry out data transmitting, signal processing device with FM signalIt sets the signals revivification that will be received and goes out data, saved, wherein LF1, LF2 and RF1 are scanning signals, are parsed as former state, RF2 is vehicleThe return information for the first time of remote controler, RF3 is to evolve from RF2 by former vehicle rule of communication, then sent out by signal processing apparatusFormal to issue RF4 authentication data back to vehicle remote control device, then after obtaining the confirmation of vehicle remote control device, signal processing apparatus is according to receivingThe RF4 arrived, so that it may confirm the position of vehicle remote control device and distinguish the foundation of other vehicles.
The embodiment of the present invention can be achieved with outside independently of vehicle, can constantly scan without changing vehicle remote control device structureThe vehicle remote control device of former vehicle, so that knowing whether the car owner for carrying remote controler is close or leaves vehicle is main points institute of the invention?；The intelligence of automatic car locking when carrying vehicle automatic unlocking when the car owner of remote controler walks close to vehicle further to develop, leave vehicleIt can key system offer technology guarantee.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be withA variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understandingAnd modification, the scope of the present invention are defined by the appended claims and their equivalents.