JP3737244B2 - In-vehicle keyless entry device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an in-vehicle keyless entry device and a mobile phone (including a simple mobile phone in this specification).
[0002]
[Prior art]
In the conventional keyless entry system, the transmitter is built in the key holder and the head of the key, and when an unlocking button provided on the key holder or the key is pressed by the operator, A signal for instructing unlocking of the vehicle door or the like is transmitted to the receiving-side in-vehicle keyless entry device mounted on the radio by radio waves or infrared rays. When the in-vehicle keyless entry device receives the signal, the in-vehicle keyless entry device performs the unlocking control of the vehicle door according to the instruction content of the signal.
[0003]
[Problems to be solved by the invention]
However, in the above-described conventional technology, there is a problem that the vehicle door cannot be unlocked when the key or the key holder is lost or the vehicle door is locked while being left in the vehicle. .
[0004]
Therefore, in view of the above problems, the present invention can unlock a vehicle door using a mobile phone even when the key is lost or the vehicle door is locked in a state where the key is left in the vehicle. an object of the present invention is to provide a vehicle keyless entry equipment that can be.
[0005]
[Means for Solving the Problems]
The technical means for achieving the above object is an in-vehicle keyless entry device mounted on a vehicle that unlocks and locks a vehicle door, and has the same transmission format as a radio signal for transmitting call contents transmitted from a mobile phone Receiving means capable of receiving radio signals transmitted at the same carrier frequency, driving means for unlocking the vehicle door, and unlocking the radio signals received by the receiving means with the mobile phone. When a predetermined code signal transmitted from the mobile phone is included when a predetermined key input for instructing is performed, this is detected, and based on the detected code signal, the driving means and control means for performing solution locking of the vehicle door by drive control of the code signal transmitted from the cellular phone, the phone number sent in the mobile phone Wherein the frequency of the DTMF tones and sound need is constituted by different keyless tone for transmission.
[0006]
Preferably, the code signal includes an ID code for individual identification and a function code for instructing a predetermined unlocking operation, and the control means includes the ID code included in the code signal, Only when the control means matches an ID code stored in advance, a predetermined unlocking operation indicated by the function code may be performed through the driving means.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Figure 1 is a block diagram of a vehicle keyless entry device according to an embodiment of the present invention, FIG. 2 is a block diagram of a mobile phone according to an embodiment of the present invention, FIG. 3 is a plan view of the mobile phone is there. The in-vehicle keyless entry device of FIG. 1 and the mobile phone of FIG. 2 constitute a keyless entry system.
[0014]
As shown in FIG. 1, an in-vehicle keyless entry device 1 mounted on a vehicle includes a receiving unit including an antenna 3 and a receiving circuit 5 that can receive radio waves for communication transmitted from a mobile phone 51 described later, Receiving means consisting of an antenna 9 and a receiving circuit 11 for receiving a keyless radio wave transmitted from a transmitter built in a normal key 7 used for the vehicle, and provided for each vehicle door and trunk, Based on the received radio wave signal received through the antennas 13 and 9 and the receiving circuits 5 and 11, the actuator 13 for unlocking and unlocking the trunk, the actuator 15 for opening and closing each window provided in each window of the vehicle, The actuators 13 and 15 are driven and controlled through the drive circuits 17 and 19 to unlock the vehicle door, unlock the trunk, and open the window. And it is configured to include a microcomputer 21 and a (control means) for performing an operation.
[0015]
This in-vehicle keyless entry device 1 can be remotely operated by either a key 7 incorporating a normal transmitter or a mobile phone 51 to be described later. The remote operation by the mobile phone 51 is performed by dialing the mobile phone 51. A predetermined function code corresponding to each operation such as unlocking and the like is input through the key 53, and the function code is transmitted from the mobile phone 51 to the in-vehicle keyless entry device 1 by a communication radio wave for transmitting call contents. It has become.
[0016]
Correspondingly, the microcomputer 21 is included in the received radio signal received through the antenna 21 and the receiving circuit 5 as well as the RAM 21a and ROM 21b in which the control program and control data necessary for the operation of the microcomputer 21 are stored. Code signal detection unit 21c for detecting a code signal (keyless transmission signal sound), and an ID code for storing an ID code for individual identification included in the code signal detected by the code signal detection unit 21c in advance in the ROM 21b And the actuators 13 and 15 are driven and controlled through the drive circuits 17 and 19, and the unlocking or the like corresponding to the function code included in the code signal detected by the code signal detection unit 21c is performed. And a control unit 21e that performs the operation.
[0017]
In the ROM 21b, in addition to the activation instruction code for activating the in-vehicle keyless entry device 1 from the standby state and the ID code for individual identification, when the operator instructs the unlocking of the vehicle door, etc. A plurality of function codes to be input from the dial key 53 and control data necessary for the control unit 21e to execute an operation such as unlocking corresponding to each function code are stored in association with each other. As specific examples of function codes, “01” is a code for instructing locking of all vehicle doors, “02” is a code for instructing unlocking of all vehicle doors, and “03” Is a code for instructing the unlocking of the trunk, “04” is a code for instructing the opening operation of the driver side window, and “05” indicates the closing operation of the driver side window. "06" is a code for instructing the opening operation of the passenger side window, and "07" is a code for instructing the closing operation of the passenger side window.
[0018]
When the code signal detection unit 21c detects the activation instruction code included in the head portion of the code signal, the control unit 21e activates the in-vehicle keyless entry device 1 from the standby state, and the identification unit 21d identifies the activation instruction code as a result of identification. When the ID code transmitted subsequent to the ID code stored in the ROM 21b matches, the function code transmitted subsequent to the ID code is accepted and the function code is transmitted. When the activation code is transmitted, the ID code and the function code are not transmitted before the predetermined time has elapsed since the activation instruction code is transmitted, and the identification unit 21d. If the transmitted ID code is different from the ID code stored in the ROM 21b as a result of identification by Discontinue reception operation capability code and a standby state of the vehicle keyless entry system 1 from an activated state.
[0019]
In addition, the control unit 21e receives a radio signal transmitted from the key 7 for instructing unlocking of the vehicle door and the trunk when the operation button (not shown) provided on the key 7 is operated. When the signal is received through the circuit 11, the unlocking operation indicated by the received radio signal is performed through the drive circuits 17 and 19 and the actuators 13 and 15.
[0020]
On the other hand, the cellular phone 51 shown in FIG. 2 and FIG. 3 provides a code signal for remotely operating the above-described in-vehicle keyless entry device 1 in addition to a normal telephone function for transmitting and receiving a call content by communication radio waves. A keyless transmission function for transmission is provided, and a normal dial key 53 composed of keys “0” to “9”, “*”, and “#” is provided on the front surface of the housing 55, and the mobile phone. Input means including a telephone key 57 and a keyless key 59 as a mode changeover switch for switching the operation mode of the telephone 51 between the telephone mode and the keyless mode is provided. Input from these keys 53, 57, 59 is performed by pressing the keys 53, 57, 59.
[0021]
Each dial key 53 is provided with two types of light emitting diodes 61 and 63 having different emission colors. Among these, the light emitting diode 61 emits red light, and is turned on when the operation mode of the mobile phone 51 is the keyless mode. The light emitting diode 63 emits green light. The mobile phone 51 is lit when the operation mode is the telephone mode. When these light emitting diodes 61 and 63 are lit, each dial key 53 is lit by red or green light, and the dial number of each dial key 53 is illuminated by the light.
[0022]
The control microcomputer 65 of the cellular phone 51 includes a RAM 65a and a ROM 65b in which control programs and control data necessary for the microcomputer 65 to execute a telephone function and a keyless transmission function are stored, and a mode switching unit 65c (mode Switching means), first and second signal sound creating units 65d and 65e (signal sound creating means), and a call processing unit 65f.
[0023]
The mode switching unit 65c switches the operation mode of the cellular phone 51 between the keyless mode and the telephone mode based on the mode switching command input through the telephone key 57 and the keyless key 59, and also through the output circuits 67 and 69. On / off control of the light emitting diodes 61 and 63 is performed.
[0024]
When one of the dial keys 53 is pressed when the operation mode is the telephone mode, the first signal sound creating unit 65d transmits a telephone number corresponding to the dial number of the dial key 53 that has been pressed. A DTMF (Dual Tone Multi-Frequency) sound that is a reliable signal sound is created.
[0025]
The second signal sound creating unit 65e creates a keyless signal sound (signal sound for keyless) corresponding to each dial number having a frequency different from that of the DTMF sound, and the keyless key 59 is pressed, A keyless signal sound indicating an activation instruction code and an ID code stored in the ROM 65b is created in accordance with the operation mode becoming the keyless mode, and any of the dial keys 53 when the operation mode is the keyless mode. Is pressed, a keyless signal sound corresponding to the dial number of the dial key 53 that has been pressed is created.
[0026]
The DTMF sound and the keyless signal sound generated by the first and second signal sound generation units 65d and 65e in this way are transmitted in the same transmission format and in the same carrier as sound signals through the transmission / reception circuit 71 and the antenna 73 as transmission means. Transmitted on frequency.
[0027]
The call processing unit 65f performs a line connection process between the mobile phone 51 and the base station switch and a process for transmitting / receiving a call content. An audio signal converted into an electrical signal through the microphone 75 is input to the call processing unit 65f via the input circuit 77. The audio signal input from the microphone 75 is received by the call processing unit 65f. After signal processing, the signal is transmitted from an antenna 73 through a transmission / reception circuit 71 by communication radio waves. When an audio signal included in the communication radio wave received by the antenna 73 is input to the call processing unit 65f through the transmission / reception circuit 71, the audio signal is subjected to signal processing by the call processing unit 65f, and then the speaker 81 through the output circuit 79. Is output to voice.
[0028]
In addition, when the communication radio wave received by the antenna 73 includes a signal for calling the mobile phone 51, the call processing unit 65f outputs to notify the mobile phone 51 that a call is being made. It has a function of outputting a ringing tone from the speaker 81 through the circuit 79.
[0029]
In the mobile phone 51 configured as described above, the calling code and the function code including the activation instruction code and the ID code for remotely operating the in-vehicle keyless entry device 1 have the same modulation format and the same as the telephone number and the content of the call. However, the keyless transmission call code and function code are transmitted as a keyless signal sound different from the DTMF sound for transmitting the telephone number. Is not accidentally called.
[0030]
FIG. 4 is a flowchart showing control of the microcomputer 65 provided in the mobile phone 51. If there is a key input from the telephone key 57 or the keyless key 59 in step S11, the process proceeds to step S12 to determine whether or not the key input in step S11 is an input from the keyless key 59. If it is an input, the process proceeds to step S13, where the dial key 53 is lit red by the light emitting diode 61, the operation mode of the cellular phone 51 is set to the keyless mode, and the calling code including the activation instruction code and the ID code is displayed. The keyless signal sound shown is generated by the second signal sound generating unit 65e, and the call code represented by the keyless signal sound is in the order of the activation instruction code and the ID code, in the order of the activation instruction code and the ID code, through the transmission / reception circuit 71 and the antenna 73. The process proceeds to step S15.
[0031]
If the determination in step S12 is negative, the process proceeds to step S14, the dial key 5 is lit in green by the light emitting diode 81, and the operation mode of the cellular phone 51 becomes the telephone mode, and the process proceeds to step S16. .
[0032]
In step S15, it is determined whether or not there is an input from the dial key 53 within 10 seconds after the input from the keyless key 59 in step S11, that is, whether or not the input of the function code is started. When the input from the key 53 is waited and no input is made within 10 seconds, the keyless mode is canceled in step S17, the process returns to step S11, and the input of the function code is started within 10 seconds. The keyless signal sound corresponding to the dial number of the dial key 53 pressed by the input of the function code is generated by the second signal sound generating unit 65e, and the keyless signal sound indicating the function code is generated by the transmission / reception circuit 71. And sequentially transmitted to the in-vehicle keyless entry device 1 through the antenna 73.
[0033]
In step S16, it is determined whether or not there is an input through the dial key 53 within 10 seconds after the input from the telephone key 57 in step S11, that is, whether or not the input of the telephone number is started. Waiting for input of a number, and if there is no input within 10 seconds, cancels the telephone mode in step S19, returns to step S11, and starts input of a telephone number within 10 seconds, then proceeds to step S20. The DTMF sound corresponding to the dial number of the dial key 53 that is pressed in response to the input of the telephone number is generated by the first signal sound generating unit 65d, and the DTMF sound indicating the telephone number is transmitted to the base through the transmitting / receiving circuit 71 and the antenna 73 When the call is transmitted sequentially to the station and a call is made with a predetermined call partner, the call processing unit 65f transmits / receives the call content in step S21. It is carried out.
[0034]
FIG. 5 is a flowchart showing the control of the microcomputer 21 when the on-vehicle keyless entry device 1 is remotely operated by the mobile phone 51. When the code signal detection unit 21c detects the activation instruction code included in the received radio wave signal in step S31, the in-vehicle keyless entry device 1 is activated from the standby state by the control unit 21e in step S32, and following the activation instruction code in step S33. When the code signal detector 21c detects the transmitted ID code, the process proceeds to step S34.
[0035]
In step S34, identification processing is performed by the identification unit 21d to determine whether the ID code received in step S33 matches the ID code stored in the ROM 21b in advance. The function code acceptance operation is stopped, the operation state is switched from the activated state to the standby state, and the process returns to step S31. If the ID codes match, the process proceeds to step S36.
[0036]
In step S36, it is determined whether or not the function code has been transmitted within a predetermined time after receiving the activation instruction code in step S31, while waiting for the function code to be transmitted and within the predetermined time. Is not transmitted, the acceptance operation is stopped in step S35, the operation state of the in-vehicle keyless entry device 1 is switched from the activated state to the standby state, the process returns to step S31, and the function code is transmitted within a predetermined time. If it comes, it will progress to step S37 and operation | movement of unlocking etc. which the transmitted function code will show will be performed by the control part 21e.
[0037]
Next, the control of the microcomputer 21 when the vehicle-mounted keyless entry device 1 is remotely operated using the key 7 incorporating the transmitter will be briefly described. When the operation button provided on the key 7 is pressed and an instruction signal for instructing a predetermined unlocking operation is transmitted from the key 7 to the in-vehicle keyless entry device 1 together with a signal indicating the ID code, the control of the microcomputer 21 is performed. The unit 21e performs the unlocking operation indicated by the received instruction signal only when the ID code included in the signal transmitted from the key 7 matches the ID code stored in the ROM 21b.
[0038]
As described above, according to the present embodiment, the in-vehicle keyless entry device 1 can be remotely operated by either the key 7 incorporating the transmitter used conventionally and the mobile phone 51. In addition to flexibly responding to the operator's request, the mobile phone 51 can be used to unlock the vehicle door even if the key 7 is lost or the vehicle door is locked while left in the vehicle. Locking and unlocking of trunks can be performed.
[0039]
The transmission method of the activation instruction code, ID code and function code using the keyless signal sound from the mobile phone 51 to the in-vehicle keyless entry device 1 is basically the same as the transmission method of the telephone number using the DTMF sound on the telephone line. Since the keyless signal sound is transmitted by the same modulation method and radio wave of the same carrier frequency as the DTMF sound at the time of transmitting the telephone number, when providing a keyless transmission function to a conventional ordinary mobile phone, The transmission / reception circuit 71 and the like do not need to be changed at all, and a keyless transmission function can be provided with a simple change.
[0040]
Furthermore, since the activation instruction code, ID code, and function code are transmitted as keyless signal sound having a sound frequency different from that of the DTMF sound, the base station switch reacts by keyless transmission, and the telephone is connected to another telephone. Can be prevented.
[0041]
If the operator does not wish to use the key 7 for remote operation of the in-vehicle keyless entry device 1, but wishes to use only the mobile phone 1, it is necessary to incorporate a transmitter in the key as in the prior art. Therefore, the key can be miniaturized and a key holder with a built-in transmitter can be dispensed with.
[0042]
Further, the opening / closing operation of the window of the vehicle can be remotely operated using the mobile phone 51, which is excellent in convenience.
[0043]
Further, since the telephone key 57 and the keyless key 59 for switching the operation mode of the cellular phone 51 between the telephone mode and the keyless mode are provided, the operation mode can be switched with one touch.
[0044]
Further, when the on-vehicle keyless entry device 1 is remotely operated by the mobile phone 51, the code signal transmitted from the mobile phone 51 includes an ID code. Since the function code is accepted only when the code matches the ID code stored in advance in the ROM 21b, transmission from the mobile phone 51 other than the mobile phone 51 owned by the owner of the vehicle. It is possible to prevent the in-vehicle keyless entry device 1 from reacting accidentally by radio waves.
[0045]
In addition, since the activation instruction code and the ID code are transmitted from the mobile phone 51 when the keyless key 59 is pressed, the operator has to input the activation instruction code and the ID code. There is no operability.
[0046]
Further, since the dial key 53 is lit in different colors in the keyless mode and the telephone mode, it is easy to determine whether the operation mode of the mobile telephone 51 is the keyless mode or the telephone mode. Can be recognized.
[0047]
Further, when the telephone number and the function code are input from the dial key 53, the dial key 53 is turned on and the dial number written in the dial key 53 is illuminated, so that even when the key operation is performed in a dark place. The desired dial key 53 can be easily pressed.
[0048]
In this embodiment, the cellular phone 51 is provided with the mode switching telephone key 57 and the keyless key 59. However, the telephone key 57 and the keyless key 59 are not provided, and a predetermined switching code is input through the dial key 53. The operation mode may be switched between the telephone mode and the keyless mode. In this case, when the switching code is input and the operation mode is switched, the transmission process of the activation instruction code and the ID code may be performed, or the operator himself / herself may use the dial key 53 after the switching code is input. The activation instruction code and the ID code may be transmitted by inputting the activation instruction code and the ID code. As the switching code, a code that is not used for the telephone number, for example, “999 *” is used. Thus, by removing the telephone key 57 and the keyless key 59, space can be saved and the mobile phone can be downsized.
[0049]
In this embodiment, the function code for instructing unlocking and the like is input from the mobile phone 51 by inputting the function code through the dial key 53. However, each operation such as unlocking is associated with each other. The function code indicating the operation corresponding to each dedicated key is transmitted from the mobile phone 51 by pressing the dedicated key and providing a dedicated key such as a lock key and an unlock key. Also good.
[0050]
Further, in the present embodiment, two types of light emitting diodes 61 and 63 are provided for lighting the dial key 53, and the dial key 53 is lit in different colors in the keyless mode and in the telephone mode. However, the type of the light emitting diode may be set to one and lighted in the same color in each mode. When the dial key 53 is lit in the same color in each mode as described above, the light emitting diode is always lit in the telephone mode, while the light emitting diode is blinked in the keyless mode, and the dial key 53 is lit in each mode. You may make it change a state.
[0066]
【The invention's effect】
As described above, according to the first aspect of the present invention, even when the key is lost or the vehicle door is locked while being left in the vehicle, the vehicle door can be unlocked by the mobile phone. It can be carried out.
[0067]
In addition, since the code signal for instructing the unlocking in the mobile phone is transmitted by the same radio signal as the radio signal for transmitting the call content, it is necessary to change the configuration of the transmission circuit of the mobile phone. It can be implemented at low cost.
[0068]
According to the second aspect of the present invention, the function code transmitted indicates only when the ID code included in the code signal transmitted from the mobile phone matches the ID code stored in advance in the control means. Since a predetermined unlocking operation is performed, it is possible to prevent the in-vehicle keyless entry device from reacting when a telephone number or the like is transmitted from a mobile phone, and other than the owner of the vehicle is illegal. It is possible to prevent remote operation of the in-vehicle keyless entry device for various purposes.
[0069]
According to the first aspect of the present invention, since the code signal for instructing the unlocking is composed of the signal sound for keyless transmission different from the signal sound for transmitting the telephone number, the vehicle-mounted keyless entry using the mobile phone When performing remote control of the apparatus, it is possible to prevent a telephone from being accidentally connected to another telephone by a code signal transmitted from the mobile telephone.
[Brief description of the drawings]
FIG. 1 is a block diagram of an in-vehicle keyless entry device according to an embodiment of the present invention.
2 is a block diagram of a mobile phone according to an embodiment of the present invention.
FIG. 3 is a plan view of the mobile phone of FIG. 2;
4 is a flowchart showing control of a microcomputer provided in the mobile phone of FIG. 2;
5 is a flowchart showing control of a microcomputer provided in the in-vehicle keyless entry device of FIG. 1 when remote control is performed by the mobile phone of FIG. 2;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 In-vehicle keyless entry device 3 Antenna 5 Receiving circuit 21 Microcomputer 13, 15 Actuator 51 Mobile phone 53 Dial key 57 Telephone key 59 Keyless key 65b ROM
65c mode switching unit 65d first signal sound generating unit 65e second signal sound generating unit 71 transmission / reception circuit 73 antenna

Claims (2)

An in-vehicle keyless entry device mounted on a vehicle that unlocks and locks a vehicle door,
A receiving means capable of receiving a radio signal transmitted with the same transmission format and the same carrier frequency as a radio signal for transmitting call contents transmitted from a mobile phone;
Driving means for unlocking the vehicle door;
The radio signal received by the receiving means includes a predetermined code signal transmitted from the mobile phone when a predetermined key input for instructing unlocking is performed on the mobile phone. And a control means for detecting and unlocking the vehicle door by controlling the driving means based on the detected code signal ,
The code signal transmitted from the mobile phone is composed of a keyless transmission signal sound having a frequency different from that of a DTMF sound used for transmitting a telephone number in the mobile phone. apparatus.   The code signal includes an ID code for individual identification and a function code for instructing a predetermined unlocking operation, and the control means includes the ID code included in the code signal. 2. The in-vehicle keyless entry device according to claim 1, wherein a predetermined unlocking operation indicated by the function code is performed through the driving means only when the ID matches a previously stored ID code.

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