CN102646323A - Remote control system and method for interference prevention, stealing copy prevention and RF signal stability improvement - Google Patents
Remote control system and method for interference prevention, stealing copy prevention and RF signal stability improvement Download PDFInfo
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Abstract
The invention provides a remote control system and a method for interference prevention, stealing copy prevention and RF signal stability improvement, and the system comprises a hand-held remote controller and a remote control host which are capable of bidirectional wireless transmission; according to the interference prevention method, mainly during function signal transmission, the hand-held remote controller automatically searches and selects an optimal channel for use so as to prevent the case of incomplete reception or no reception at all of the remote control host caused by interference of the function signal, and the remote control host immediately executes the function and replies after receiving the function signal sent by the hand-held remote controller; according to the stealing copy prevention method, both the hand-held remote controller and the remote control host adopt multiple interactive encryption technology for the transmission of various signals so as to reach high stealing copy prevention effect; according to the RF signal stability improvement method, the hand-held remote controller is provided with multiple RF transmission reception technology, and the hand-held remote controller can actively send RF signals with a preset time to reconstruct a communication pipeline when the signal emission and reception are at fault, and thus a signal transmission function with high stability is reached.
Description
Technical field
The function that the present invention relates to a kind of far-end control system progresses greatly and improves, and is meant a kind of telechirics and anti-tampering, anti-pirate thereof especially, promotes the method for RF signal stabilization degree.
Background technology
In the life, the scope that Digiplex is used is quite extensive, and is common like household electrical appliance, garage iron rolling door, automobile or locomotive burglary-resisting installation etc., makes the user obtain effect more easily through wireless control mode.Influenced bigger with automobile or locomotive burglary-resisting installation again in above-mentioned various article; For example; The purpose of this burglary-resisting installation is to prevent that automobile or locomotive from being stolen by other people, and the therefore more brilliant burglar signal that can try every possible means and disturb, crack or receive, copy this wireless transmission is to reach the purpose of stealing this thing; Therefore, the security of the burglary-resisting installation important that just seems.
With present common wireless remote controller; Only a kind of single merit formula, single-frequency formula RF (Radio Frequency between this transmitter and receiver; Less radio-frequency) structure of (high-frequency transmission) device; Be about to one and only can be arranged at a remote control equipment with the transmitter of a certain fixed channel emission data; Set one again and only can be arranged on the vehicle, and utilized the emission in a certain channel therebetween and reception and reach the distance-type operating function of RF (high-frequency transmission) with the receiver that this same fixed channel receives data; Only above-mentioned single merit formula, single-frequency formula RF (high-frequency transmission) apparatus structure are prone to produce disadvantage:
(1), single merit formula, single-frequency formula RF (high-frequency transmission) are though the structure of device is simpler; But remotely controlling functional is relatively poor; When context has channel to disturb; Emission and reception, the especially receiver that has influence on data easily disturbed and can't effectively be received data, causes the straighforward operation can't correct execution.
(2), when context has channel to disturb; As in same parking lot; Front, rear, left and right often have tens of vehicle to carry out the use of RF (high-frequency transmission) remote control mode; Then to each other not only receiver be subject to disturb and can't effectively receive data, even also receive wrong data easily and but carry out the confusion that causes data to transmit.
(3), again because of above-mentioned telechirics, in telepilot, establish fixed signal, and launch the fixed frequency and the fixing signal of data, in case telepilot by pirate after, its object of protecting will be very easy to stolen, so security and confidentiality are lower.
(4), traditional telechirics operating process is: press remote controller buttons; Let telepilot transmitting RF (high-frequency transmission) signal give main frame; Main frame is just carried out the desired action of telepilot and movement content is transmitted to telepilot through RF (high-frequency transmission) signal after receiving signal, and the movement content that telepilot receives behind the signal main frame shows with liquid crystal display output, warning horn, vibrations output, output backlight.If having to appoint with a side can't normally receive signal because of a variety of causes (like the environmental disturbances factor), can't normally carry out in this transmission course just then this time move.
In addition; Common on the market automobile remote-control device is divided into haply exempts from key entering function and alarm function two big series products; Add remote control separately and start function, just be derivatized to and exempt from key entering function, exempt from the automobile remote-control device that key entering and remote control startup function, alarm function, alarm and remote control start four kinds of main kenels.The difference of exempting from key entering function and alarm function is to exempt from key entering function and is only just carrying out correlation function instantly by function key; Promptly get into sleep pattern after being finished; Up to just waking up by function key once more, do not need during the sleep pattern regularly and the remote host end is got in touch.Alarm function is except carrying out the correlation function by function key instantly, and whether still need timing wake-up to detect the remote host end after the entering sleep pattern that is finished has situation to take place.
A. exempt from key and get into major function:
1. lock, 2. release, 3. boot release.Telepilot is except have the function by function key instantly, and other times are all in sleep pattern, and battery life was above 1 year.
B. alarm major function:
1. open alarm/lock 2. sound all clear/release, 3. boot release, 4. remote host triggers (comprising triggerings such as car door, luggage case, hood, vibrations).Telepilot is except have the function by function key instantly, and other times must be set the several seconds and wake up automatically once, and whether detect the remote host end has about four months of triggering for generating, battery life).
C. exempting from key gets into and remote control startup major function:
1. lock, 2. release, 3. boot release, 4. start engine, 5. stop engine.(telepilot is except have the function by function key instantly, and other times are all in sleep pattern, and battery life was above 1 year).
D. alarm and remote control start major function:
1. open alarm/lock, 2. sound all clear/release, 3. boot release, 4. start engine, 5. stop engine, 6. remote host triggers (comprising triggerings such as car door, luggage case, hood, vibrations) (telepilot is except have the function by function key instantly; Other times must be set the several seconds and wake up automatically once; Detect the remote host end and whether triggering for generating is arranged, about four months of battery life).
The telepilot of four kinds of functions must separately use because function is different, cause the client to use and the stock on unusual trouble.
In addition, general on the market automobile remote-control device RF output power also has only a kind of specification, such as: the A telepilot can be controlled remote control distance 100M, but no matter telepilot under situation apart from main frame 10M or 100M, the RF output power all is the same.Shortcoming is the waste battery electric power, increases and disturb; Sometimes distance too closely makes electric power strong excessively, can cause remote control unstable on the contrary.
Conclude above existing wireless remote-control system and still have many shortcomings, and then have influence on operational convenience of user and security, the necessity that further improves is arranged in fact.
Summary of the invention
One of order of the present invention is to provide a kind of telechirics and method anti-tampering, that prevent pirate, lifting RF signal stabilization degree thereof; With this in the process of propagation function signal; Can select optimum channel to transmit and to reduce interference; Reach the stable effect that transmits signal, and have the executed effect of the affirmation of answer function.
Two of order of the present invention is to provide a kind of telechirics and method anti-tampering, that prevent pirate, lifting RF signal stabilization degree thereof; Make with this and to carry out between hand-held remote controller and remote host reaching the more anti-pirate effect of height when various signals transmit, to promote whole security and confidentiality.
Three of order of the present invention is to provide a kind of telechirics and anti-tampering, anti-pirate thereof, promotes the method for RF signal stabilization degree so that hand-held remote controller reach operant response rapidly, the multi-efficiency that disturbs of more power saving, interference resistant.
Four of order of the present invention is to provide a kind of telechirics and anti-tampering, anti-pirate thereof, promotes the method for RF signal stabilization degree, so that telechirics more stable, more certain multi-efficiency in operation.
Five of order of the present invention is to provide a kind of telechirics and method anti-tampering, that prevent pirate, lifting RF signal stabilization degree thereof, reaches more less electricity consumption to reach the multifunctional composite telechirics that can automatically switch.
Six of order of the present invention is to provide a kind of telechirics and method anti-tampering, that prevent pirate, lifting RF signal stabilization degree thereof, reaches more less electricity consumption to reach the telechirics that can adjust the RF emissive power automatically.
For reaching above-mentioned all projects, telechirics of the present invention includes: remote host and hand-held remote controller; Wherein: this remote host; Be installed on the vehicle and be the double-direction radio transmission; In order to the signal that receiving function requires, after reception, to carry out the corresponding function of this signal and also send the signal of answer, it includes: a control module and can receiving and transmitting signal is installed in the Transmit-Receive Unit on the vehicle; But this control module mainly is made up of CPU, ROM (read-only memory), random access memory and electronic type clear program ROM (read-only memory), and this control module makes the Transmit-Receive Unit that is installed on the vehicle have the function that minimum frequency is disturbed in automatic search through setting;
This hand-held remote controller; Carry out multiple function in order to send coded signal in effective range, to control remote host; And receive the return signal that remote host sends; And decoding back shows the executed state of this function, and it includes: the transceiver module unit that a control module and can receiving and transmitting signal; But this control module mainly is made up of CPU, ROM (read-only memory), random access memory and electronic type clear program ROM (read-only memory), and this transmitting-receiving module group unit and this are installed in Transmit-Receive Unit on the vehicle automatically to frequently.
Include according to above-mentioned telechirics and design: the method for anti-tampering, anti-pirate, raising RF signal stabilization degree; Wherein:
About jamming-proof method; Main point is in the process of propagation function signal; Utilize hand-held remote controller and to select optimum channel (the minimum channel of at that time annoyance level) to use from line search; Avoiding function signal to be caused remote host to receive not exclusively or the situation that can't receive at all, and after remote host is received the function signal that hand-held remote controller sends, can carry out the return signal that requires function and answer to accomplish this function at once, guarantee this appellative function executed by interference.
Method about anti-pirate mainly all adopts interactive encryption technology to carry out various signal transmission in hand-held remote controller and remote host, through repeatedly one coming past encryption, a decrypting process, to reach the effect of highly preventing pirate.
Secondly, the transmission signal between hand-held remote controller and remote host is added a group identification label, distinguishes the sequencing and the absolute position of signal with this, with this can make hand-held remote controller reach operant response rapidly, the multi-efficiency that disturbs of more power saving, interference resistant.
About improving the method for RF signal stabilization degree; Mainly add multiple formula RF and transmit reception technique at hand-held remote controller; Through hand-held remote controller in emission, when receiving signal and having troubles; RF (high-frequency transmission) signal that can initiatively send preset times is to rebuild communication conduit, to reach the signal transfer function of high stability.
Method about the multifunctional composite telechirics that can automatically switch; Mainly add a machine identification sign indicating number at hand-held remote controller and remote host; When hand-held remote controller and remote host are communicated with each other; Remote host can be passed to hand-held remote controller to the identification sign indicating number, and hand-held remote controller is transformed into correct function kenel after receiving the identification sign indicating number automatically, to reach automatically the signal transfer function of handoff functionality and power saving fast.
About adjusting the method for RF emissive power automatically, mainly add and adjust the RF output power automatically according to the distance of remote host and hand-held remote controller at hand-held remote controller.When distance is near, link up with the emission low-power; Then launch high power during distance and link up, to reach the signal transfer function of high stability and power saving.
Its above-mentioned purpose of relevant the present invention, effect adopt the detailed content of technology, conjunction with figs. explanation now as back:
Description of drawings
Fig. 1 is the structure calcspar of the present invention's one preferred embodiment;
Fig. 2 is the circuit structure and the function sketch thereof of the remote host of the present invention's one preferred embodiment;
Fig. 3 is the basic function sketch of the hand-held remote controller of the present invention's one preferred embodiment;
Fig. 4 is the band diagram of the present invention's one preferred embodiment;
Fig. 5 is for selecting talk frequency process flow diagram between the remote host of the present invention's one preferred embodiment and hand-held remote controller;
Fig. 6 is the remote host and the interactive encryption flow figure of the conversation type between hand-held remote controller of the present invention's one preferred embodiment;
Fig. 7 is the remote host of the present invention's one preferred embodiment and the multiple formula RF transmission reception technique process flow diagram between hand-held remote controller;
Fig. 8 is the group identification label coding techniques synoptic diagram of the wireless radio transmission of the present invention's one preferred embodiment;
Fig. 9 is automatic switching function process flow diagram between the remote host of the present invention's one preferred embodiment and hand-held remote controller;
Figure 10 is adjustment RF emissive power process flow diagram automatically between the remote host of the present invention's one preferred embodiment and hand-held remote controller.
Description of reference numerals: 1-remote host; The 10-control module; The 101-CPU; The 102-ROM (read-only memory); The 103-RAS; But 104-electronic type clear program ROM (read-only memory); 11-is installed in the receiving element on the vehicle; The 12-input; 13-output; The 14-PMU; The 15-data bus interface; The 2-hand-held remote controller; The 20-control module; The 201-CPU; The 202-ROM (read-only memory); The 203-RAS; But 204-electronic type clear program ROM (read-only memory); 21-transceiver module unit; The 22-input; 23-output; The 24-power supervisor; The 25-power supply shows.
Embodiment
See also Fig. 1, disclosed the structure calcspar of the present invention's one preferred embodiment; As shown in the figure, telechirics composition of the present invention mainly includes: a remote host 1 and a hand-held telepilot 2.
Please join shown in Figure 2ly again, disclosed the circuit structure and the function sketch thereof of the remote host of the present invention's one preferred embodiment; Form according to 1 structure of the remote host shown in the drawing and to include: control module 10, be installed in receiving element 11, importation 12, output 13, PMU 14 and data bus interface 15 on the vehicle; Wherein this control module 10 is the heart of remote host 1, further includes: but one have a logical operation function CPU 101, set the electronic type clear program ROM (read-only memory) 104 of characteristic in order to the RAS 103 of stored routine set data and in order to stored routine in order to the ROM (read-only memory) of stored routine setting command 102; This is installed in Transmit-Receive Unit 11 on the vehicle for having the double-direction radio transfer function; In order to receive and to transmit the contact signal of 2 of remote host 1 and hand-held remote controllers; And set through control module 10, make this Transmit-Receive Unit 11 that is installed on the vehicle have the optimum channel function of searching; This input 12 is shown in drawing; Include substantially: input etc. is depressed in voltage input, igniting input, directly input, car door input, option input, rotating speed input, gasoline detecting input, safety input, bonnet input, hand brake input, the input of diesel motor water, brake; And can do many settings via remote host 1; These establishing method major parts are to be accomplished by voltage input, igniting input; Urgent input again, car door input, selection are input as the detecting device that belongs to the alarm trigger input under the warning horn function; Intention is worked as alarm function and is under the anti-theft state; When these detecting devices had detected action, warning horn will send caution and pipe, and reaches hand-held remote controller 2 via the signal that the Transmit-Receive Unit 11 that is installed on the vehicle will be invaded and let the user know; The input of wherein rotating speed, gasoline detect input, safety input, bonnet input, hand brake input, the input of diesel motor water, brake and depress input then starts the necessity under the function for remote control detecting device, as long as these detecting devices have any one the undesired action that can't accomplish remote control startup engine smoothly.
This output includes 13 shown in drawing substantially: car door lock output, car door release output, trunk output, stop light output, channel 3～7 outputs, loudspeaker output, caution pipe output, light emitting diode output, start cut off output, start output, igniting output, air-conditioning output, igniting #2 output, igniting #3 output, start before output, start back output, and close output behind the door etc.
Above-mentioned car door lock output, car door release output, trunk output, stop light output, channel 3～7 outputs, loudspeaker output, caution pipe output, light emitting diode output, start and cut off output etc. and be warning horn or do not have key and get into the employed output of function, alarm reaction and the operation calling of hand-held remote controller 2 of the warning horn of remote host 1 depended in the action of these outputs; For example do the operation of anti-theft feature when remote control hand-held remote controller 2; The warning horn of system can get into anti-theft feature; Simultaneously car door is locked and start and cut off output and make stop light output flicker once represent to accomplish, under this situation, if car door is the situation of opening; Then car door is held input or car door and is closed input and can move, the reaction apprizing system start warning horn with send as caution pipe, action such as stop light flicker, loudspeaker pipe; Above-mentioned again warning horn state just can start loudspeaker and pipe if be preset as unlatching, and anti-, then loudspeaker pipe and can not move.
In addition; Start output, igniting output, air-conditioning output, start before output, to start back output, close output, light emitting diode output etc. behind the door be the employed various outputs of remote control startup function; The action of these function outputs is decided by the state of remote control startup and the calling of hand-held remote controller 2; For example remote control startup functional status is set at the rotating speed startup, and after the calling of pressing hand-held remote controller 2 started, system can check input safely, bonnet input, hand brake input earlier and brake whether all in off position to depress input; If system just can see igniting output off and start output, whether system can start normal by the self-verifying rotating speed after starting output; If normally then for remote control starts successfully, and start into the function signal telepilot 2 of holding in one's hands, just all the other relevant output projects can be according to the programmed control action of CPU 101 by system's emission one.
System still continues whether all in off position to depress input in the input of inspection safety, bonnet input, hand brake input and brake in the middle of starting running again, and whether the inspection rotating speed is normal.If have any cuit undesired in the running, system stops immediately and that information of exporting undesired project is sent to hand-held remote controller 2.Because of carelessness the hand brake is forgotten pull-up like the user, will cause remote control to start failure.System stops immediately and the abnormal information of the hand brake is sent to hand-held remote controller 2 when starting failure, lets the user come into plain view, and knows that at once the hand brake forgotten pull-up, directly the hand brake is pulled on remote control again again and starts and get final product.For example remote control starts and to have started success again, and engine is on-stream, and this moment is if car bonnet is opened, and system stops immediately and the abnormal information of car bonnet is sent to the reason that hand-held remote controller 2 lets the user know to stop.
In addition, the power source about remote host 1 is that automobile storage battery generally is the 12V direct current from automobile storage battery.Because the change of load; The voltage of 12V is also unstable; And the CPU of remote host 1 101 needs the 5V stable power with the circuit that is installed in the radio frequency of the Transmit-Receive Unit 11 on the vehicle, so remote host 1 has designed PMU 14 supply stable power and lets the circuit of CPU 101 and the radio frequency that is installed in the Transmit-Receive Unit 11 on the vehicle use.
In addition, the many additional data port functions that have of the automobile major part of newly dispatching from the factory are wanted and this automobile computer binding must pass through the data port transmission interface and automobile computer links, and have a data port transmission interface 15 so remote host 1 is also established.
This hand-held remote controller 2 is hand-held controllers that a kind of user of convenience takes use, and it can be controlled remote host 1 and guard against theft, removes antitheft, trunk and engine start or function such as close in effective range; It utilizes the wireless link function to reach and the transmitted in both directions effect of 1 of remote host.The function key of for example pressing hand-held remote controller 2 as the user requires remote host 1 to do the car door locking function; Remote host 1 can be carried out the action of locking in receiving that car door that hand-held remote controller 2 transmits is locked behind the command signal at once, and answer hand-held remote controller 2 has been accomplished car door and locked.
See also shown in Figure 3ly, disclosed the basic function sketch of the hand-held remote controller of the present invention's one preferred embodiment; Internal element composition according to the hand-held remote controller shown in the drawing 2 includes:
One control module 20; Be its center, but further be provided with one have a logical operation function CPU 201, set the electronic type clear program ROM (read-only memory) 204 of characteristic in order to the RAS 203 of stored routine set data and in order to stored routine in order to the ROM (read-only memory) of stored routine setting command 202;
One transceiver module unit 21 is tool double-direction radio transfer function, is responsible for the signal of 2 of reception and transmission remote host 1 and hand-held remote controllers;
A plurality of inputs 22; Call out the input of each item function for hand-held remote controller 2 remote controls; But include as configuration switch 1 among the figure for car door is locked, switch 2 for car door release, switch 3 for trunk is opened, switch 4 for start, switch 5 is program state, the functional sequence more than certain with corresponding be can free conversion;
A plurality of outputs 23 are the output 23 of hand-held remote controller 2 remote controls calling each item function, include liquid crystal display output, warning horn, vibrations output, output backlight shown in drawing; This liquid crystal display output is responsible for transfer system situation to liquid crystal display displays and is come out; Be in running till now or stop work as learning from LCD when the system start-up; And be that the there has problem to cause information such as shut-down, all can be by obtaining real time information on the LCD.This warning horn is responsible for pointing out user's present situation, locks or removes when locking action as starting car door, and warning horn can pipe, and can continue to pipe 10～15SEC etc. (incoming ring tone of similar mobile phone) if be triggered.This vibrations output function similar with warning horn, so difference only at vibration prompt, warning horn is an auditory tone cues.This output function backlight provides LCD backlight to let the user also can know the information situation of seeing its demonstration night.
One power supervisor 24 shows 25 with power supply; The power source major part of this hand-held remote controller 2 is the 1.5V direct current; And the radio frequency of CPU 201 wherein and transceiver module unit 21 needs the above voltage of 3V; Therefore this power supervisor 24 has boost function, uses to provide enough voltage to supply with.
Because the above-mentioned all functions of this hand-held remote controller 2 all need battery to provide electric power to accomplish, so battery altering opportunity is an important topic.General automobile anti-theft remote controller can be provided with a battery detector, is about to not have electricity to remind the user need change battery to show low electric power when battery detector detects battery.It is different that the maximum shortcoming of this mode reckons without each battery discharge ability; The part battery is still sustainable use a period of time (possibly be a week) under low electric power; But the part battery does not have electricity available (possibility one, two day) soon fully after low electric power takes place; If having, the user do not change battery, with causing the destiny that to drive to start at once.Because this hand-held remote controller 2 is most important parts in the bilateral system of the present invention, and be a multi-functional telepilot, it is good not only to be asked to external form, and remote control distance is stable, the most important thing is battery electric power.Based on above-mentioned be design this one have an intelligent low electric power Presentation Function hand-held remote controller 2; It not only can notify the electricity usage situation of user's current battery more accurately; Also can prolong the battery service time after low electric power situation takes place effectively, let the user have ample time and more renew battery or carry out the battery charge operation.
See also shown in Figure 4ly, disclosed the band diagram of the present invention's one preferred embodiment; The present invention is in coverage; What make 2 of remote host 1 and hand-held remote controllers can be errorless really to passing; And guarantee still can do stable under the various frequency interferences situation and effectively signal transmission having; A kind of method that can search frequency automatically of special employing carries out guaranteeing the stable transmission of signal to passing to find out the minimum frequency of Optimal Jamming degree; Should search the method for frequency automatically; Set for the control module 10 that utilizes remote host 1 in the enforcement; Make the Transmit-Receive Unit 11 that is installed on the vehicle have the function of automatic channel search and data transmission, it mainly selects arbitrary wireless frequency section for use, and a plurality of frequencies in this section are cut into n the block (this parameter can freely be adjusted setting) of identical size; Make the frequency that all contains equal number in each block; With this in the use, this is installed in Transmit-Receive Unit 11 on the vehicle and can be every at a distance from the set time frequency of utilization in all blocks be done the calculating and the weighting of intensity, with 21 pairs of frequencies in transceiver module unit that hand-held remote controller 2 is provided at any time; Thus; When all frequencies in first block are all disturbed; The receiving element 11 of this device on vehicle can the next block continuation of automatic switchover search calculate weighting numerical value reckling; By that analogy, the frequency in all blocks has all been compared, and last weighting numerical result reckling is responded to hand-held remote controller 2 uses.
Please continuing, it is shown in Figure 5 to consult, and has disclosed and has selected talk frequency process flow diagram between remote host that the present invention's one preferred embodiment is arranged and hand-held remote controller; Its flow process is following:
Flow process A: begin from first frequency of first block, radio frequency (RF) transfers reception to detect this channel intensity;
Flow process B: the numerical value that reads channel intensity;
Flow process C: if too big this channel of expression of intensity can't use at present;
Flow process D: this channel can't use, skips over;
Flow process E: frequency intensity is calculated with the mode of weighted score;
Flow process F: whether the frequency in this block has all detected and has finished;
Flow process G: also not detect to finish, skip to the next frequency of this block, repeat flow process B;
Flow process H: the frequency of this block has all detected and has finished, and then the weighted score of all frequencies is done comparison;
Flow process I: whether the frequency of this block is all disturbed;
Flow process J: skip to first frequency of next block, repeat flow process B;
Flow process K: compare the minimum frequency of annoyance level;
Flow process L: the notice hand-held remote controller changes to optimum channel (optimum frequency with the last time is notified with reserve frequency).
Design can not only make the service range of telechirics of the present invention longer, more stable in view of the above, and utilizes to find out and in each block frequency, disturb less frequency to come passing relatively, and is fixing to prevent the stolen safe effect of copying with frequency.
In addition, for fear of remote host 1 and the nonsynchronous situation of hand-held remote controller 2 frequencies, the present invention is designed with backup channel again, with as guaranteeing the synchronous of remote host 1 and hand-held remote controller 2 two ends frequencies.This backup channel is the channel of a fixed frequency, and it is following that it launches opportunity:
1. when optimum frequency can't normally transmit the reception signal;
2. remote host 1 is asynchronous with hand-held remote controller 2 two ends frequencies, causes and can't normally transmit when receiving signal.
When any situation in above-mentioned two kinds of situation takes place, switch to backup channel at once and remake once transmission reception action, get final product regular event and pass on the optimum frequency content simultaneously, the Frequency Synchronization at remote host 1 and hand-held remote controller 2 two ends.
See also shown in Figure 6ly, disclosed the remote host of the present invention's one preferred embodiment and the interactive encryption flow figure between hand-held remote controller; Telechirics of the present invention is used the mode of searching optimum frequency except making remote host 1 and hand-held remote controller 2 when signal transmits, can reduce disturbing factor; To obtain effective signal to outside passing; More adopt the interactive encryption technology of conversation type of innovation, to reach more anti-pirate effect; The step of its enforcement is following:
The X of step 1. (a) shown in figure representes that multiple formula RF transmits the multiple inquiry number of times of reception technique, and this parameter can be done freely to adjust by hand-held remote controller 2, and degree of stability is high more more at most for the inquiry number of times.
(b) TYPEA type coded signal: the data content of remote host 1 end is given in the tendency to develop originally of hand-held remote controller 2 ends, does through CPU 201 and encrypts with TYPEA type mode after logical operation is handled, and the data after the encryption just gives remote host 1 end.
Step 3.TYPEB type coded signal: the data content that hand-held remote controller 2 ends are given in the tendency to develop originally of remote host 1 end is done logical operation through CPU 101 and is handled the back and encrypt with TYPEB type mode, and data encrypted just gives hand-held remote controller 2 ends.
Step 4. hand-held remote controller 2 ends see through " TYPEB type " coded signal and decipher after CPU 201 is done the logical operation processing; Can learn after the deciphering whether this coded signal is legal and correct; If reducible one-tenth remote host 1 end of the words tendency to develop originally data of giving hand-held remote controller 2 ends; Words if not then are illegal signal, and finish talk this time.
The Y of step 5. (a) shown in figure representes that multiple formula RF transmits the multiple inquiry number of times of reception technique, and this parameter can be done freely to adjust by hand-held remote controller 2, and degree of stability is high more more at most for the inquiry number of times.
(b) TYPEC type coded signal: the data content that remote host 1 end is given in the tendency to develop originally of hand-held remote controller 2 ends is done logical operation through CPU 201 and is handled the back and encrypt with TYPEC type mode, and data encrypted just gives remote host 1 end.
Step 6. remote host 1 end is done TYPEC type coded signal and is deciphered after logical operation is handled through CPU 101; Can learn after the deciphering whether this coded signal is legal and correct; If reducible one-tenth hand-held remote controller 2 ends of the words tendency to develop originally data of giving remote host 1 end; Words if not then are illegal signal, and finish talk this time.
Step 7. remote host 1 this moment has obtained correct signal and has carried out the function that hand-held remote controller 2 ends are paid, and the state of remote host 1 end is returned to hand-held remote controller 2 ends.
After step 8. hand-held remote controller 2 ends are received signal, on the present related accessory of state table with remote host 1 end (like LCD, hummer, motor ... etc.).
According to above-mentioned flow process; In the practical operation be: when the user presses arbitrary function button of hand-held remote controller 2; This hand-held remote controller 2 produces a parameter value A and encrypts through the random number of CPU 201 meetings and invests the signal that this sends for the first time; This is a TYPEA type signal; After receiving this TYPEA type signal that sends for the first time, deciphers according to parameter value A remote host 1 through CPU 101; Produced a parameter value B and encrypt the signal that invests the answer first time through CPU 101 same random numbers by remote host 1 after deciphering completion, this is a TYPEB type signal, and hand-held remote controller 2 is deciphered according to parameter value B through CPU 201 after receiving " TYPEB type " signal of replying the first time; Re-using parameter value B after deciphering is accomplished encrypts and invests the signal that sends for the second time; This is a TYPEC type signal, and remote host 1 passes through CPU 101 according to parameter value B after receiving the TYPEC type signal that sends for the second time " deciphering, the signal after the deciphering is hand-held remote controller 2 and requires remote host 1 to need the function action of carrying out; after remote host 1 execution, the signal of situation with answer for the second time returned to hand-held remote controller 2 again, accomplished the execution of required function to inform the user.This interactive spirit is parameter value A and parameter value B; Must be 101 random numbers decisions of CPU through the parameter value B in the communication of encrypt/decrypt repeatedly and the TYPEC type signal that hand-held remote controller 2 is sent between hand-held remote controller 2 and remote host 1 by remote host 1; So the signal of simple copy hand-held remote controller 2 ends and can't correct execution the process of encrypt/decrypt repeatedly, and make telechirics all receive illegal signal and can't move.
Below further do an explanation to encryption, the deciphering of TYPEA type, TYPEB type and TYPEC type:
The ciphering process of TYPEA type: parameter value A is a random number that random number producer produced that is included by CPU 201, and hand-held remote controller 2 converts coded signal to according to this parameter value A, and sends remote host 1 to.
The decrypting process of TYPEA type: remote host 1 is received and is converted original signal to according to this parameter value A, if deciphering back illegal signals directly finishes action this time.
The ciphering process of TYPEB type: parameter value B is a random number that is produced by CPU 101 random number producers and is stored to RAS 103 that remote host 1 converts coded signal to according to this parameter, and sends hand-held remote controller to.
The decrypting process of TYPEB type: hand-held remote controller is stored in the RAS 203 after receiving parameter value B, and converts original signal to according to this parameter value B, if deciphering back illegal signals directly finishes action this time.
The ciphering process of TYPEC type: hand-held remote controller 2 converts coded signal to according to the parameter value B in the middle of the RAS 203, and sends remote host 1 to, and this kenel must the value of passing a parameter B.
The decrypting process of TYPEC type: remote host 1 converts original signal to according to the parameter value B in the middle of the RAS 103 after receiving signal, if deciphering back illegal signals directly finishes action this time.
See also shown in Figure 7ly, disclosed multiple formula RF between remote host and the hand-held remote controller of the present invention's one preferred embodiment and transmitted and receive process flow diagram; Telechirics of the present invention is used the mode of searching optimum frequency except making remote host 1 and hand-held remote controller 2 when signal transmits, can reduce disturbing factor; To obtain effective signal to outside passing; More adopted the multiple formula RF of innovation to transmit reception technique, made the more highly stable effect of signal to reach; The step of its enforcement is following:
(b) shown in square 3～square 4 among the figure; If after context has under the situation that channel disturbs, causes hand-held remote controller to send RF (high-frequency transmission) signal, give hand-held remote controller though remote host is received signal and return path signal; Hand-held remote controller can not receive signal or signal content mistake and interrupts communication; This moment, hand-held remote controller can initiatively send RF (high-frequency transmission) signal again, had rebulid communication conduit, if hand-held remote controller continues can not receive signal; Then hand-held remote controller also can initiatively be set up communication conduit constantly, uses until exhausted up to the number of times of X;
(c) in figure shown in square 5～square 6, if having under the situation that channel disturbs at context, cause hand-held remote controller to send RF (high-frequency transmission) signal after; Remote host can not receive signal or signal content mistake and interrupts communication; This moment, hand-held remote controller can initiatively send RF (high-frequency transmission) signal again, had rebulid communication conduit, if remote host continues can not receive signal; Then hand-held remote controller also can initiatively be set up communication conduit constantly, uses until exhausted up to Y number;
(d) shown in square 7～square 8 among the figure; If after context has under the situation that channel disturbs, causes hand-held remote controller to send RF (high-frequency transmission) signal, give hand-held remote controller though remote host is received signal and return path signal; Hand-held remote controller can not receive signal or signal content mistake and interrupts communication; This moment, hand-held remote controller can initiatively send RF (high-frequency transmission) signal again, had rebulid communication conduit, if hand-held remote controller continues can not receive signal; Then hand-held remote controller also can initiatively be set up communication conduit constantly, uses until exhausted up to the number of times of Y;
X shown in figure and Y represent that multiple formula RF transmits the multiple inquiry number of times of reception technique, and this parameter can be done freely to adjust by hand-held remote controller 2, and number of times degree of stability more at most is high more.
In addition; About disappearance such as slow, the power consumption of reaction velocity during the ubiquity operation in the existing telechirics; The present invention also improves and designs a kind of " group identification label coding techniques ", and it is rapid to make telechirics have operant response, more power saving; Interference resistant disturbs multiple advantages such as .., conjunction with figs. explanation now as back:
See also Fig. 8, disclosed the group identification label coding techniques synoptic diagram of the wireless radio transmission of the present invention's one preferred embodiment; It mainly has label n in that the signal of hand-held remote controller 2 and 1 transmission of remote host is additional, and this parameter can freely be adjusted setting.The content of the P expression signal shown in figure; N representes tag identification code; The spirit of this group identification label coding techniques is the signal P (content of each group is all identical) that transmits between hand-held remote controller 2 and remote host 1; Add n (group identification label), distinguish its sequencing and absolute position.On conventional art; For avoiding hand-held remote controller 2 and remote host 1 two ends to get into emission mode simultaneously; After when the remote host 1 termination collection of letters, must continuing to receive to hand-held remote controller 2 end signals and stopping to launch a period of time; Could confirm hand-held remote controller 2 ends this moments not at emission mode and converted receiving mode into, at this moment, remote host 1 just converts to launch to bring in and transmits; And hand-held remote controller 2 also must continue to receive to remote host 1 end signal " after stopping to launch a period of time ", could confirm that remote host 1 end is not at this moment at emission mode; Use this " group identification label coding techniques "; Wherein receiving end can foresee to judge when signal finishes according to label n, if n=0, representing this group signal has been last group signal; Receiving end does not need to wait for that transmitting terminal " stops to launch a period of time " again; Can convert emission mode immediately into and transmit, transmitting terminal also converts receiving mode into behind signal having launched last group immediately, no matter when so hand-held remote controller 2 and remote host 1 are receiving end or transmitting terminal; The wait of losing time of the neither need of both sides, and make signal reaction sensitive more rapidly.
Secondly; Hand-held remote controller 2 and remote host 1 two ends are no matter all must expend suitable electric power at receiving mode or emission mode; Especially use battery to work as the hand-held remote controller 2 of power source; Certainly save electric power so shorten the signal passing time at two ends, this technology is not wasted the meaningless stand-by period, and the operant response time, shorter then power saving effect was strong more.
Moreover; On conventional art, after being destroyed a part, receiving end is " having stopped launching a period of time " with its erroneous judgement easily if signal is subjected to disturb in transmittance process; And convert emission mode to; But the other side also finishes at emission mode as yet, and two ends are all at emission mode at this moment, and this can't regular event to cause system.After using " group identification label coding techniques "; Can receiving end judge that the signal which group is arranged is disturbed according to the label n that receives signal? When does signal finish? Not can because of erroneous judgement causes telechirics this time can't regular event, can increase the degree of stability of telechirics action.
In addition; The present invention more comprises the hand-held remote controller 2 of the machine of four kinds of common difference in functionality kenels all being put into same telechirics; And become a multifunctional composite hand-held remote controller, and the remote host 1 that reaches four kinds of major function kenels through automatic switching mode all can be simply and shared easily same telepilot.These four kinds of function kenels comprise: exempt from key entering, alarm, exempt from key entering and remote control startup, alarm and remote control startup; On remote host 1, add the identification sign indicating number of a machine separately.When hand-held remote controller 2 and remote host 1 were communicated with each other, remote host 1 can be passed to hand-held remote controller 2 to the identification sign indicating number, and the remote host 1 that after hand-held remote controller 2 is received the identification sign indicating number, is transformed into corresponding this machine of correct function kenel automatically uses.Thus, just can use same hand-held remote controller 2 can arbitrarily use the remote host 1 of any kenel.
Please cooperate and consult shown in Figure 9ly, disclose automatic switching function process flow diagram between remote host and the hand-held remote controller of the present invention's one preferred embodiment; Implementation step is following:
(b) shown in square 6～square 11 among the figure, if remote host 1 is the main frame that belongs to " alarm kenel ", just remote host 1 adds " alarm " identification sign indicating number on RF (high-frequency transmission) signal, and hand-held remote controller 2 is given in passback.Hand-held remote controller 2 converts " alarm " type dedicated remote control to through CPU 201, and is stored to RAS 203 after receiving this one " alarm " identification sign indicating number.Then need to set the length of one's sleep of several seconds, go forward side by side into sleep pattern.Whether have any situation take place, like car door triggering, luggage case triggering etc. if when finish the length of one's sleep, just waking detection remote host 1 automatically up.There is something special if hand-held remote controller 2 detects, and then carries out correlation function.If remote host 1 no any situation takes place, then hand-held remote controller 2 is just set the length of one's sleep of several seconds, goes forward side by side into sleep pattern, continues circulation.
Telechirics of the present invention more includes automated power adjustment function, can adjust the RF output power automatically according to the distance of remote host and hand-held remote controller.Distance is near, the emission low-power; Distance, the emission high power.Adjust function declaration about automated power:
(1) press remote controller key as the user, the low power transmissions signal sent out earlier a string by telepilot.If telepilot and main frame standoff distance are very near, telepilot can receive the signal of main frame passback at once, has so just accomplished communication.
(2) press remote controller key as the user, the low power transmissions signal sent out earlier a string by telepilot.If telepilot is not received the signal of main frame passback, telepilot can pass high-power emission signal again and give main frame (this expression telepilot and main frame a good distance off).
Short distance: telepilot and main frame are separated by in about 100M.
Long distance: telepilot and main frame are separated by more than about 100M.
General user used a teleswitch 80% be at 100M with interior use, 20% can surpass 100M uses.So this telepilot can effectively be saved the battery electric quantity of telepilot, makes battery life longer.Simultaneously because remote controller emission low-power closely, thus do not have signal closely cross by force can't remote control problem.
Please cooperate and consult shown in Figure 10ly, disclose between remote host and the hand-held remote controller of the present invention's one preferred embodiment adjustment RF emissive power process flow diagram automatically; Telechirics of the present invention is used the mode of low power transmissions except making remote host 1 and hand-held remote controller 2 closely the time, let the signal transmission reduce disturbing factor; To obtain effective signal, more adopted the RF output power of adjusting hand-held remote controller 2 according to the remote host 1 and the distance of hand-held remote controller 2 recently automatically to outside passing.Distance is near, the emission low-power; Distance, the emission high power, with reach make the more highly stable and less electricity consumption more of signal, general user use hand-held remote controller 2 have 80% be at 100M with interior use, 20% can surpass 100M uses.So this hand-held remote controller 2 can effectively be saved the battery electric quantity of telepilot, makes battery life longer; The step of its enforcement is following:
(b) shown in square 4～square 6 among the figure; Under hand-held remote controller 2 and remote host 1 standoff distance situation far away; After hand-held remote controller 2 directly sent high power RF (high-frequency transmission) signal, remote host 1 can be received signal, and remote host 1 can be given hand-held remote controller 2 by passback RF (high-frequency transmission) signal after carrying out correlation function; Hand-held remote controller 2 is carried out correlation function after receiving signal, accomplishes this communication.
In sum; The method of telechirics proposed by the invention and anti-tampering, anti-pirate thereof, lifting RF signal stabilization degree; Anti-interference method, antitheft copy method, lifting RF signal stabilization degree method and the group identification label coding techniques etc. that wherein are used for telechirics; All can single existence or select more than one methods, technology to be compound in this telechirics, so that different users's demand to be provided, and then enlarge its range of application.
The above is merely preferred embodiment of the present invention, and when not limiting practical range of the present invention with this, the equalization of utilizing spirit of the present invention to do such as changes and modifies, and all still belongs in the scope that is contained.
Claims (21)
1. a telechirics is characterized in that, includes:
One remote host, it is installed on the vehicle and is the double-direction radio transmission, and the signal that this remote host requires in order to receiving function is carried out the corresponding function of this signal and is sent the signal of answer after reception; This remote host includes: control module and can receiving and transmitting signal be installed in the Transmit-Receive Unit on the vehicle; Wherein, but this control module mainly form by centre unit, ROM (read-only memory), RAS and electronic type clear program ROM (read-only memory); This control module makes this Transmit-Receive Unit have the function that minimum frequency is disturbed in automatic search through setting;
One hand-held telepilot; It can be controlled remote host and carry out multiple function and receive the return signal that remote host sends in effective range; And decoding back shows the state of executed function, and this hand-held remote controller includes: control module and transceiver module unit that can receiving and transmitting signal; Wherein, but this control module mainly form by CPU, ROM (read-only memory), RAS and electronic type clear program ROM (read-only memory); This transceiver module unit and this are installed in Transmit-Receive Unit on the vehicle automatically to frequently.
2. telechirics according to claim 1 is characterized in that, remote host is provided with the PMU of a supply stabilized power source.
3. telechirics according to claim 1 is characterized in that, remote host be provided with one external computer equipment is provided data bus interface.
4. telechirics according to claim 1 is characterized in that, power supervisor and power supply that hand-held remote controller is provided with a supply stabilized power source show.
5. an anti-interference method that is used for telechirics as claimed in claim 1 is characterized in that, includes:
Use a remote host to search the wireless frequency section automatically, and a plurality of frequencies in this section are cut into n block of identical size, make the frequency that all contains equal number in each block;
Use this remote host to be provided with one and be installed in Transmit-Receive Unit on the vehicle in every calculating and weighting of the frequency of utilization in all blocks being done intensity at a distance from the set time; Disturb minimum frequency to find out, and the transceiver module unit that the signal of giving notice supplies a hand-held telepilot is to frequently.
6. the anti-interference method that is used for telechirics according to claim 5 is characterized in that frequency intensity is calculated with the mode of weighted score.
7. the anti-interference method that is used for telechirics according to claim 5 is characterized in that this method also is designed with reserve frequency, to guarantee remote host and hand-held remote controller two ends Frequency Synchronization.
8. the interactive encryption method of conversation type that is used for telechirics as claimed in claim 1 is characterized in that, comprising:
This hand-held remote controller is sent the first time additional parameter value A coded signal transfer to a remote host;
This remote host receives the back according to parameter value A deciphering, replys the additional for the first time coded signal that parameter value B is arranged after accomplishing;
This hand-held remote controller is received and is replied for the first time behind the coded signal according to parameter value B deciphering, sends the coded signal that is produced according to parameter value B for the second time after the completion, but must the value of passing a parameter B;
This remote host receives the back according to parameter value B deciphering, and the signal after the deciphering is the function action that hand-held remote controller requires remote host to carry out, and after the remote host execution, replies to hand-held remote controller again and has accomplished function executing.
9. the interactive encryption method of conversation type that is used for telechirics according to claim 8 is characterized in that parameter value A is the TYPEA type coded signal that is produced with random number by CPU in the hand-held remote controller.
10. the interactive encryption method of conversation type that is used for telechirics according to claim 8 is characterized in that parameter value B is the TYPEB type coded signal that is produced with random number by CPU in the remote host.
11. the interactive encryption method of conversation type that is used for telechirics according to claim 8 is characterized in that parameter value B produces TYPEC type coded signal through the CPU of hand-held telepilot.
12. the interactive encryption method of conversation type that is used for telechirics according to claim 8; It is characterized in that; Be included in also that the signal that transmits between hand-held remote controller and remote host is additional to have a label n; Make hand-held remote controller and remote host between the signal P that transmits for adding n, to distinguish sequencing and absolute position, make receiving end foresee the judgement signal and when finish according to label n.
13. the interactive encryption method of conversation type that is used for telechirics according to claim 8 is characterized in that, also comprises anti-interference method as claimed in claim 5.
14. a raising RF signal stabilization degree method that is used for telechirics as claimed in claim 1 is characterized in that, uses hand-held remote controller under scenario, to continue the RF signal to X number of remote host emission, this situation comprises:
When channel is disturbed; Remote host can not receive and sends RF signal or signal content mistake by hand-held remote controller and interrupt communication; Use hand-held remote controller initiatively to send the RF signal and rebulid communication conduit; If remote host continues can not receive signal, hand-held remote controller can initiatively be set up communication conduit constantly, uses until exhausted up to X number; And
When channel is disturbed; Though remote host can be received signal and return path signal and give hand-held remote controller; But hand-held remote controller can not receive signal or signal content mistake and interrupts communication, uses hand-held remote controller initiatively to send the RF signal and rebulids communication conduit, if hand-held remote controller continues can not receive signal; Then hand-held remote controller also can initiatively be set up communication conduit constantly, uses until exhausted up to the number of times of X.
15. the raising RF signal stabilization degree method that is used for telechirics according to claim 14 is characterized in that X is multiple inquiry number of times, is done freely to adjust by hand-held remote controller.
16. the raising RF signal stabilization degree method that is used for telechirics according to claim 14 is characterized in that, also comprises anti-interference method as claimed in claim 5.
17. the raising RF signal stabilization degree method that is used for telechirics according to claim 14 is characterized in that, also comprises the interactive encryption method of conversation type as claimed in claim 8.
18. an electricity saving method that is used for telechirics as claimed in claim 1 is characterized in that, comprising:
In remote host and hand-held remote control machine, add more than one function kenel machine at least;
At all additional identification sign indicating number of each function kenel machine;
Utilize RF signal that hand-held remote controller sends appointed function to remote host, carry out correlation function after making remote host receive signal;
Remote host passback RF signal and additional identification sign indicating number are to hand-held remote controller;
Hand-held remote controller converts the operator scheme with remote host corresponding function kenel machine automatically to.
19. the electricity saving method that is used for telechirics according to claim 18 is characterized in that, this function kenel machine includes and exempts from key entering function, alarm function, exempts from key and gets into and remote control startup function and alarm and remote control startup function.
20. one kind is used for the automatic adjustment RF emissive power of telechirics and the method for power saving, it is characterized in that, comprising:
Utilize hand-held remote controller to send the low power RF signal,, and carry out correlation function if remote host can be given hand-held remote controller by passback RF signal after receiving the signal of hand-held remote controller to remote host;
If remote host can not receive the hand-held remote controller RF signals transmitted or hand-held remote controller can not receive the RF signal that remote host returns, hand-held remote controller can be heightened emissive power automatically, and communication tries again.
21. the automatic adjustment RF emissive power of telechirics and the method for power saving of being used for according to claim 20 is characterized in that, preset communication distance is to be use low power RF signal in the 100M, and 100M is outward for using high power RF signal.
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| CN2011100387928A CN102646323A (en) | 2011-02-16 | 2011-02-16 | Remote control system and method for interference prevention, stealing copy prevention and RF signal stability improvement |
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| CN2011100387928A CN102646323A (en) | 2011-02-16 | 2011-02-16 | Remote control system and method for interference prevention, stealing copy prevention and RF signal stability improvement |
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| CN109741593A (en) * | 2018-11-30 | 2019-05-10 | 与德科技有限公司 | A kind of remote control method of household electrical appliances, the remote control system of mobile terminal and household electrical appliances |
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Effective date of abandoning: 20170531 |