CN103106708A - Key-free entrance system and control method thereof - Google Patents
Key-free entrance system and control method thereof Download PDFInfo
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- CN103106708A CN103106708A CN2011103612472A CN201110361247A CN103106708A CN 103106708 A CN103106708 A CN 103106708A CN 2011103612472 A CN2011103612472 A CN 2011103612472A CN 201110361247 A CN201110361247 A CN 201110361247A CN 103106708 A CN103106708 A CN 103106708A
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- authentication signal
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Abstract
The invention discloses a key-free entrance system, comprising a resonance unit, a control unit and a portable device. The resonance unit is arranged on at least one door, and is used for generating a sensing signal when sensing that a user approaches to or contacts the door. The control unit receives the sensing signal, and controls the resonance unit to send a first authentication signal. The portable device receives a first authentication signal, and sends a second authentication signal according to the first authentication signal. The control unit receives the second authentication signal, and controls the opening of the door according to the second authentication signal. The invention also discloses a control method of the key-free entrance system. According to the system and the method, a triggering device for sensing whether the user approaches to or contacts the door is not needed, an additional transmitting antenna for transmitting the authentication signals is also not needed, and thus the system and the method have the advantages of lowering costs and simplifying control flow.
Description
Technical field
The present invention enters system and control method thereof about a kind of system and control method thereof of entering especially in regard to a kind of hand-free key.
Background technology
In recent years, in the door lock control field of automobile or dwelling house, adopt the hand-free key to enter system (keyless entry system) more and more general with the unlatching of controlling car door or door for house.
Enter system 1 as example take a kind of known automobile hand-free key, please refer to shown in Figure 1ly, it comprises a flip flop equipment 11, a control device 12, a portable unit 13 and a door lock actuator 14 at least.Wherein, control device 12 has a control circuit 121, a radiating circuit 122, an emitting antenna 123, a receiving antenna 124 and a receiving circuit 125.
When a user O approached or touches flip flop equipment 11, flip flop equipment 11 produced a trigger pip TS to start an authentication mechanism.Wherein, after trigger pip TS input control circuit 121, control circuit 121 is via radiating circuit 122 and emitting antenna 123 emission one authentication signal AS.After receiving authentication signal AS, portable unit 15 (being for example the automobile key that user O carries) namely carries out work decoding with it, after decoding confirmed that authentication signal AS is correct, portable unit 15 can send it back controller 12 via the high frequency antenna (figure shows) of portable unit 15 with a confirmation signal MS.When receiving antenna 124 and receiving circuit 125 were received the confirmation signal MS that portable unit 15 replys, control circuit 121 namely can be controlled door lock actuator 14 and send a start signal OS, with opening car door after carrying out decoding and confirming that described confirmation signal MS is correct.Enter system 1 by above-mentioned hand-free key, can make the user not need to open the door with real automobile key and can allow car door opening.
Yet, the flip flop equipment 11 that present hand-free key enters system 1 is generally to respond to contact inductor or an optical inductor action whether user O approaches or touch, therefore, comparatively complicated on the mode of controlling and judging whether to trigger, and controller 12 also needs emitting antenna 123 to carry out the transmission of authentication signal AS.So, not only make the hand-free key enter the cost of system 1 higher, its control flow is also more complicated.
Therefore, how to provide a kind of hand-free key to enter system and control method thereof, have advantages of reducing costs and simplify control flow, become one of important topic.
Summary of the invention
Purpose of the present invention is for providing a kind of hand-free key that has reducing costs and simplify the advantage of control flow to enter system and control method thereof.
The present invention can realize by the following technical solutions.
A kind of hand-free key of the present invention enters system and comprises a resonant element, a control module and a portable unit.Resonant element is arranged at least one door, and sensing one user produces a sensing signal during near to or in contact with door.Control module receives sensing signal, and controls resonant element emission one first authentication signal.Portable unit receives the first authentication signal, and according to the first authentication signal emission one second authentication signal, wherein, control module receives the second authentication signal, and opens according to the second authentication signal control gate.
In one embodiment of the present invention, resonant element is a resonator.In addition, the circuit of resonant element comprises the serial or parallel connection of inductance and electric capacity.
In one embodiment of the present invention, control module has an oscillatory circuit, and oscillatory circuit and resonant element are electrically connected, and oscillatory circuit receives sensing signal to produce an oscillation frequency.In addition, control module also can have a control circuit, and control circuit judges whether to launch the first authentication signal by resonant element according to oscillation frequency.And control circuit can produce a voltage signal by oscillatory circuit, so that resonant element emission the first authentication signal.In addition, control module also can have one second radio receiving unit, and the second radio receiving unit receives the second authentication signal.Wherein, control circuit judges whether to send a control signal control gate unlatching according to the second authentication signal.
In one embodiment of the present invention, portable unit has one first radio receiving unit and a wireless transmitting unit, and the first radio receiving unit receives the first authentication signal, wireless transmitting unit emission the second authentication signal.
In addition, the control method that a kind of hand-free key of the present invention enters system is applied to control one and opens and comprise the following steps: by resonant element sensing one user near to or in contact with, and send a sensing signal; Receive sensing signal, and launch one first authentication signal by resonant element; And open according to the second authentication signal control gate.Wherein, resonant element is a resonator.
In one embodiment of the present invention, control method also can comprise the step that produces an oscillation frequency according to sensing signal.
In one embodiment of the present invention, control method also can comprise when the natural resonance frequency of oscillation frequency and resonant element is unequal, launch the first authentication signal, and when oscillation frequency equates with the natural resonance frequency of resonant element, the step of not launching the first authentication signal.
In one embodiment of the present invention, control method also can comprise by portable unit reception first authentication signal, reach the step of launching the second authentication signal by portable unit.
In one embodiment of the present invention, control method also can comprise when the second authentication signal with a useful signal when identical, door capable of being opened, and when the second authentication signal and a useful signal are not identical, the not step of door capable of being opened.
From the above, because of according to hand-free key of the present invention enter system by resonant element sensing one user near to or in contact with, and launch the first authentication signal by resonant element, and a portable unit is launched the second authentication signal according to the first authentication signal, and a control module is according to the unlatching of the second authentication signal control gate.With known art, whether hand-free key of the present invention enters system and does not need to respond to the user with flip flop equipment and approach or touch, and does not also need extra emitting antenna to carry out the transmission of authentication signal.In addition, hand-free key of the present invention enters the control method of system also because replacing flip flop equipment and emitting antenna with resonant element, therefore its control flow is also comparatively simplified.Therefore, hand-free key of the present invention enters system and control method thereof and has advantages of that cost is low and simplify control flow.
Description of drawings
Fig. 1 is the function block schematic diagram that known a kind of automobile hand-free key enters system;
Fig. 2 is the function block schematic diagram that a kind of hand-free key of the preferred embodiment of the present invention enters system;
Fig. 3 A and Fig. 3 B are respectively the schematic equivalent circuit of resonant element;
Fig. 4 is another function block schematic diagram that a kind of hand-free key of the preferred embodiment of the present invention enters system; And
Fig. 5 is the control method process flow diagram that hand-free key of the present invention enters system.
The main element symbol description:
1,2: the hand-free key enters system
11: flip flop equipment
12: control device
121,222: control circuit
122: radiating circuit
123: emitting antenna
124: receiving antenna
125: receiving circuit
13,23: portable unit
14: door lock actuator
21: resonant element
22: control module
221: oscillatory circuit
223,231: radio receiving unit
232: wireless transmitting unit
AS: authentication signal
C: electric capacity
CS: control signal
f
0: natural resonance frequency
f
1: oscillation frequency
FAS: the first authentication signal
L: inductance
MS: confirmation signal
O: user
OS: start signal
S01～S04: step
SAS: the second authentication signal
SS: sensing signal
TS: trigger pip
VS: voltage signal
Embodiment
Hereinafter with reference to relevant drawings, illustrate that a kind of hand-free key according to the preferred embodiment of the present invention enters system and control method thereof, wherein identical element will be illustrated with identical component symbol.
The hand-free key enters system 2 and comprises a resonant element 21, a control module 22 and a portable unit 23.Wherein, portable unit 23 is a device that can supply user O (for example car owner or house owner) to carry.For example can be a key or a telepilot or its combination.Explanation is again, and hand-free key of the present invention enters system 2 applicable to the car door of controlling an automobile or controls a household gate inhibition, or controls any opening of device.In this, to control car door opening as example.
Please refer to shown in Fig. 3 A and Fig. 3 B, it is respectively the schematic equivalent circuit of resonant element 21.Wherein, resonant element 21 can be a dielectric resonator (dielectric resonator, DR), and its equivalent electrical circuit is inductance and capacitances in series or in parallel the composition.It is worth mentioning that, Fig. 3 A and Fig. 3 B just for example, the user can change its circuit certainly on the basis of Fig. 3 A and Fig. 3 B, with in response to its demand.
Please be simultaneously with reference to Fig. 3 A, Fig. 3 B and Fig. 4, control module 22 has an oscillatory circuit 221, and oscillatory circuit 221 is electrically connected with resonant element 21.In this, oscillatory circuit 221 is a voltage-controlled oscillator (voltage controlled oscillator, VCO).During not near to or in contact with resonant element 21, resonant element 21 makes oscillatory circuit 221 produce natural resonance frequency f as user O
0And natural resonance frequency f
0Equal
(figure does not show).In addition, when user O is arranged near to or in contact with resonant element 21, the inductance that changes circuit due to 21 pairs of human bodies generation inductions of resonant element reaches or electric capacity, and then change its time constant, make resonant element 21 produce a sensing signal SS input oscillatory circuit 221, and make oscillatory circuit 221 produce another oscillation frequency f according to sensing signal SS
1
In addition, control module 22 also can have a control circuit 222, and control circuit 222 is according to oscillation frequency f
1Judge whether by resonant element 21 emission one first authentication signal FAS.In this, control circuit 222 is oscillation frequency f relatively
1With natural resonance frequency f
0Natural resonance frequency f when oscillation frequency f1 and resonant element 21
0When equating, expression user O represents namely that not near to or in contact with resonant element 21 user is not intended to opening car door, and control circuit 222 is not by resonant element 21 emission the first authentication signal FAS.In addition, as the natural resonance frequency f of oscillation frequency f1 and resonant element 21
0When unequal, expression has user O near to or in contact with resonant element 21, and the expression user wants opening car door, and control circuit 222 is by resonant element 21 emission the first authentication signal FAS.In this, control circuit 222 produces a voltage signal VS input resonant element 21 by oscillatory circuit 221, so that resonant element 21 emission the first authentication signal FAS.Wherein, the first authentication signal FAS is a low frequency signal.Because resonant element 21 is dielectric resonator, therefore, can utilize resonant element 21 as dielectric resonator antenna, the first authentication signal FAS is launched wirelessly (resonant element 21 is treated as an emitting antenna).
Control module 22 also can have one second radio receiving unit 223, and the second authentication signal SAS that the second radio receiving unit 223 receives by wireless transmitting unit 232 emissions.In addition, control circuit 222 judges whether to send a control signal CS control gate unlatching according to the second authentication signal SAS.Wherein, after receiving the second authentication signal SAS, the second radio receiving unit 223 passes to control circuit 222, after control circuit 222 decodings, if the built-in useful signal of the second authentication signal SAS and control module 22 is when identical, control circuit 222 sends a control signal CS and controls door lock actuator (figure shows) actuating, with opening car door.If when the second authentication signal SAS is identical with useful signal, (the second authentication signal SAS is not an invalid signals, represent described near to or in contact with user O be not the real owner in automobile or house), control circuit 222 does not send control signal CS, and certainly, door can not opened yet.
Illustrate again at this, the definition of useful signal is: when user O is the real owner in automobile or house, after control circuit 222 receives the second authentication signal SAS and decoding that is transmitted by portable unit 23, if the password built-in with control circuit 222 is identical, control module 22 can judge that the second authentication signal SAS that described portable unit 23 produces is useful signal, therefore, send control signal CS and control door lock actuator, with opening car door.Opposite, be invalid signals.
In addition, please be simultaneously with reference to Fig. 4 and shown in Figure 5, with the control method that illustrates that a kind of hand-free key of the present invention enters system 2.Wherein, Fig. 5 is the control method process flow diagram that the hand-free key enters system 2.The control method that hand-free key of the present invention enters system 2 comprises step S01～S04.
Step S01: by resonant element 21 sensing one user O near to or in contact with, and send a sensing signal SS.In this, resonant element 21 is a dielectric resonator.Due to user O near to or in contact with the time, resonant element 21 can produce induction and change its time constant human body, and then produces sensing signal SS, and the oscillatory circuit 221 of control module 22 can produce according to sensing signal SS and be different from natural resonance frequency f
0Another oscillation frequency f
1
Step S02: receive sensing signal SS, and by resonant element 21 emission one first authentication signal FAS.As oscillation frequency f
1Natural resonance frequency f with resonant element 21
0When unequal, control module 22 is by resonant element 21 emission the first authentication signal FAS.In addition, as oscillation frequency f
1Natural resonance frequency f with resonant element 21
0When equating, resonant element 21 is not launched the first authentication signal FAS.
Step S03: according to the first authentication signal FAS emission one second authentication signal SAS.In this, by first radio receiving unit 231 reception the first authentication signal FAS of portable unit 23, and launch the second authentication signal SAS by the wireless transmitting unit 232 of portable unit 23.
Step S04: open according to the second authentication signal SAS control gate.In this, when the built-in useful signal of the second authentication signal SAS and control circuit 222 when identical, control circuit 222 sending control signal CS are with opening car door.In addition, when the second authentication signal SAS was not identical with useful signal, control module 22 sending control signal CS not, made car door can not open.
In addition, other technical characterictic that the hand-free key enters system 2 describes in detail in the above description, repeats no more in this.
In sum, because of according to hand-free key of the present invention enter system by resonant element sensing one user near to or in contact with, and launch the first authentication signal by resonant element, and a portable unit is launched the second authentication signal according to the first authentication signal, and a control module is according to the unlatching of the second authentication signal control gate.With known art, whether hand-free key of the present invention enters system and does not need to respond to the user with flip flop equipment and approach or touch, and does not also need extra emitting antenna to carry out the transmission of authentication signal.In addition, hand-free key of the present invention enters the control method of system also because replacing flip flop equipment and emitting antenna with resonant element, therefore its control flow is also comparatively simplified.Therefore, hand-free key of the present invention enters system and control method thereof and has advantages of that cost is low and simplify control flow.
The above is only illustrative, and non-limiting.Anyly do not break away from spirit of the present invention and category, and to its equivalent modifications of carrying out or change, all should be included in the claim limited range.
Claims (15)
1. a hand-free key enters system, it is characterized in that, comprising:
One resonant element is arranged at least one door, and sensing one user produces a sensing signal near to or in contact with described when door;
One control module receives described sensing signal, and controls described resonant element to launch one first authentication signal; And
One portable unit receives described the first authentication signal, and according to described the first authentication signal emission one second authentication signal, wherein said control module receives described the second authentication signal, and controls described door according to described the second authentication signal and open.
2. hand-free key according to claim 1 enters system, it is characterized in that, described resonant element is a resonator.
3. hand-free key according to claim 1 enters system, it is characterized in that, the circuit of described resonant element comprises the serial or parallel connection of inductance and electric capacity.
4. hand-free key according to claim 1 enters system, it is characterized in that, described control module has an oscillatory circuit, and described oscillatory circuit and described resonant element are electrically connected, and receive described sensing signal to produce an oscillation frequency.
5. hand-free key according to claim 4 enters system, it is characterized in that, described control module also has a control circuit, and described control circuit judges whether by described the first authentication signal of described resonant element emission according to described oscillation frequency.
6. hand-free key according to claim 5 enters system, it is characterized in that, described control circuit produces a voltage signal by described oscillatory circuit, so that described the first authentication signal of described resonant element emission.
7. hand-free key according to claim 1 enters system, it is characterized in that, described portable unit has one first radio receiving unit and a wireless transmitting unit, and described the first radio receiving unit receives described the first authentication signal, described the second authentication signal of described wireless transmitting unit emission.
8. hand-free key according to claim 1 enters system, it is characterized in that, described control module also has one second radio receiving unit, and described the second radio receiving unit receives described the second authentication signal.
9. hand-free key according to claim 5 enters system, it is characterized in that, described control circuit judges whether to send a control signal according to described the second authentication signal and controls described door unlatching.
10. the control method that the hand-free key enters system, is characterized in that, it is applied to control a unlatching, and comprises the following steps:
By resonant element sensing one user near to or in contact with, and send a sensing signal;
Receive described sensing signal, and by described resonant element emission one first authentication signal;
According to described the first authentication signal emission one second authentication signal; And
Controlling described door according to described the second authentication signal opens.
11. control method according to claim 10 is characterized in that, also comprises:
Produce an oscillation frequency according to described sensing signal.
12. control method according to claim 11 is characterized in that, also comprises:
When the natural resonance frequency of described oscillation frequency and described resonant element is unequal, launch described the first authentication signal; And
When described oscillation frequency equates with the natural resonance frequency of described resonant element, do not launch described the first authentication signal.
13. control method according to claim 10 is characterized in that, also comprises:
Receive described the first authentication signal by a portable unit; And
By described the second authentication signal of described portable unit emission.
14. control method according to claim 10 is characterized in that, also comprises:
When described the second authentication signal when identical, is opened described door with a useful signal; And
When described the second authentication signal and a useful signal are not identical, do not open described door.
15. control method according to claim 10 is characterized in that, described resonant element is a resonator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103612472A CN103106708A (en) | 2011-11-15 | 2011-11-15 | Key-free entrance system and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103612472A CN103106708A (en) | 2011-11-15 | 2011-11-15 | Key-free entrance system and control method thereof |
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| Publication Number | Publication Date |
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| CN103106708A true CN103106708A (en) | 2013-05-15 |
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ID=48314532
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103612472A Pending CN103106708A (en) | 2011-11-15 | 2011-11-15 | Key-free entrance system and control method thereof |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3755101B2 (en) * | 1998-11-27 | 2006-03-15 | 富士通テン株式会社 | In-vehicle receiver |
| CN101477718A (en) * | 2008-12-19 | 2009-07-08 | 重庆集诚汽车电子有限责任公司 | Passive non-key control system and control method thereof |
| TW200931347A (en) * | 2008-01-07 | 2009-07-16 | Tangent Microelectromechanics Corp | Power saving method for a transponder of the passive keyless entry system |
| JP2010116755A (en) * | 2008-11-14 | 2010-05-27 | Mitsubishi Motors Corp | Hand-touch sensor and vehicle control system |
-
2011
- 2011-11-15 CN CN2011103612472A patent/CN103106708A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3755101B2 (en) * | 1998-11-27 | 2006-03-15 | 富士通テン株式会社 | In-vehicle receiver |
| TW200931347A (en) * | 2008-01-07 | 2009-07-16 | Tangent Microelectromechanics Corp | Power saving method for a transponder of the passive keyless entry system |
| JP2010116755A (en) * | 2008-11-14 | 2010-05-27 | Mitsubishi Motors Corp | Hand-touch sensor and vehicle control system |
| CN101477718A (en) * | 2008-12-19 | 2009-07-08 | 重庆集诚汽车电子有限责任公司 | Passive non-key control system and control method thereof |
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Application publication date: 20130515 |