JP2002106214A - Door opening motion detecting method and device for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the inconvenience in a conventional vehicle that a device for unlocking a door by a driver, and a device for checking a key and starting an engine after the driver sits on a driver's seat are independently mounted. SOLUTION: A door opening device has an electrical capacitance means between an escutcheon fixed at a door side, and a handle formed operatably to the escutcheon in an electrically insulated state.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for detecting a door opening operation of a vehicle, which detects when the door of the vehicle is opened.

[0002]

2. Description of the Related Art Conventionally, when starting an engine, an operation of pulling a door handle by hand, opening a door, then getting on a vehicle and turning on an ignition switch has been performed. The use of electronic circuits such as a keyless system and an immobilizer as described is rapidly progressing. For example, in the keyless system, as shown in FIG. 9, when the switch 2 of the portable transmitter 1 is turned on, the first CPU 4
Of the ID codes and function codes stored in the first memory 3, the combination of the ID code and the door lock function code and the combination of the ID code and the door unlock function code are used to operate the switch 2. The signal is read alternately every time, and the receiver 7 on the vehicle side is connected via the signal output circuit 5 and the transmitter 6 in series.
Sent to.

The receiving section 8 of the receiver 7 transmits the transmitted ID code and function code to a signal input circuit 9.
The second CPU 11 compares the transmitted ID code and function code with the ID code and function code stored in the second memory 10. Assuming that the transmitter 1 used is a proper one, the following function codes are compared. By this comparison, if the function code is the door unlock, the actuator 13 is unlocked via the drive circuit 12,
In the case of a door lock, lock drive is performed.

Next, an immobilizer system will be described with reference to FIG. When the key 20 is inserted into the key cylinder and the key switch 21 is turned on, the CPU 22 of the vehicle-side control device A outputs an excitation start signal to the amplifier circuit 23 via the input / output circuit 29, and the antenna 24 The transmission of the excitation signal to the transponder 25 is started for a certain time. As a result, the transponder 25 becomes operable, and the CPU 22 outputs the ID request signal X to the amplifier circuit 23 via the input / output circuit 29, and the amplifier circuit 23
Transmits the ID request signal X from the antenna 24 to the transponder 25 provided on the key 20. The transponder 25 uses the function F written in the transponder 25.
Using t (X), response data Y is calculated from the ID request signal X and the function Ft (X) to calculate an ID code, and transmits the code to the antenna 24.

The CPU 22 obtains answer data Z from the ID request signal X transmitted to the transponder 25 and the function Fe (X) stored in the EEPROM 26,
22 compares the two pieces of answer data Y and Z, and if both match, the “correct transponder” (or
Although the start of the engine is permitted as a “regular key” via the drive circuit 27, the injector, and the igniter 28, when the two do not match, the “incorrect transponder” (or
Do not run the engine as an "illegal key").

[0006]

However, in such a device, a device for unlocking a door by a driver and a device for performing key collation after sitting in a driver's seat and starting an engine are separately provided. And it was very inconvenient and inconvenient. Further, in a situation where both hands are holding a luggage or the like and the hands cannot be used freely, there is a problem that the door handle or the like cannot be operated unless the luggage or the like is placed.

The present invention has been made in view of such circumstances, and a first object is to detect a vehicle door opening operation for detecting whether or not a driver such as a driver has started an operation of opening a door. Is to provide a way. A second object is to provide a vehicle door opening operation detecting device using the door opening operation detecting method.

[0008]

A vehicle door opening operation detecting method according to the present invention comprises an escutcheon attached to a door side, a handle electrically insulated and held by the escutcheon, and an escutcheon side. A capacitance means having an electrode formed on each of the handle sides; and judging an operation state of the handle on the basis of a magnitude or change of dielectric or the like between the electrodes.

In the vehicle door opening device according to the present invention, an escutcheon attached to a door side, a handle electrically insulated and held by the escutcheon, and electrodes formed on the escutcheon side and the handle side, respectively. The operation of the handle is determined based on the magnitude or change of the dielectric constant between the electrodes, and when it is determined that the handle is operated, the opening mechanism of the door is operated. Then, the door is opened.

[0010] In the vehicle door opening device according to the present invention, the capacitance means detects a change in the dielectric constant when a part of a human body is interposed between the escutcheon and the handle.

In the vehicle door opening apparatus according to the present invention, one electrode of the capacitance means is formed on the handle, and the other electrode is opposed to the escutcheon so as to face the handle. It is formed in.

In the vehicle door opening device according to the present invention, the electrode provided on the escutcheon side is provided on a surface of the escutcheon.

[0013]

Next, an embodiment according to the present invention will be described. Embodiment 1 FIG. This embodiment will be described with reference to FIGS. First, an overall overview will be described. The portable remote controller 30 is carried around by a passenger C such as a driver in an inner pocket or the like. When the portable remote controller 30 has a built-in battery and receives a wake-up signal from a vehicle-side antenna,
The remote control ID code is transmitted to the vehicle-side control device B. .

The vehicle-side control device B is stored inside the instrument panel of the vehicle, wakes up intermittently, and when a detection signal is supplied from the human body detection circuit 40, the antenna 32 connected to the control device B When a request signal is output to the portable remote controller 30 and an ID code is received from the portable remote controller 30, it is determined whether or not the ID code is a registered ID code. Sets the door locking and unlocking device to be unlockable. That is, the state is switched to the unlocked state if the state is locked, and to the locked state if the state is unlocked.

Next, a detailed configuration of the vehicle-side control device B will be described below with reference to FIG. The vehicle-side control device B includes:
A CPU 33, an EEPROM 34, an input / output circuit 35 as an interface, a first drive circuit 36, and a second drive circuit 37, wherein the CPU 33 receives a signal indicating that a human body has been detected from the human body detection circuit 40; Outputs a request signal to the amplifier circuit 38. Further, the CPU 33 enables the reception of the ID code from the portable remote controller 30 for a fixed time after outputting the request signal. Also, the ID from the antenna 32
When the code is supplied through the amplifier circuit 38, the E
Compared with the registered ID code stored in the EPROM 34, if they match, the human body detection circuit 40 is driven via the input / output circuit 35 for a predetermined time, for example, 30 seconds,
The detection result report is received from the human body detection circuit 40. Further, the CPU 33 determines that the ID code is the registered ID as described above.
If it is determined that the codes match, the door locking / unlocking device 41 is controlled via the input / output circuit 35 and the second drive circuit 37. Thereafter, the CPU 33 includes an injector,
The start of the engine is permitted via the igniter 42. For example, when the driver turns on an engine start start switch provided around the driver's seat (operation start trigger), the same communication as described above is performed. Is started.

Next, the configuration of the human body detection circuit 40 and its sensor will be described below. That is, as shown in FIGS. 2 to 5, the sensor portion of the human body detection circuit 40 is of a capacitance type, and the capacitance is a capacitance of a metal deposition layer formed on the surface of the resin door handle 50. It is formed by one electrode 50a and a second electrode 51a disposed on the back side of an electrically insulating resin escutcheon 51 disposed opposite to the door handle 50. In addition,
2 and 3, the door handle 50 and the escutcheon 51 are disposed on an outer panel 53 of a side door 52 of the vehicle. The door handle 50 has a door locking / unlocking mechanism (a handle arm 55, a shaft 56, Spring 57
Is provided so as to cover the upper portion of the concave portion 54 formed on the outer surface of the escutcheon 51 to which the escutcheon 51 is attached. A handle arm 55 is erected on the inner surface of the door handle 50 so as to be rotatable about an axis 56 with respect to the escutcheon 51.

The handle arm 55 is connected to the door locking / unlocking device 41 so that the force of the spring 57 is not released at the time of locking, thereby restricting the rotation of the handle arm 55. At the time of unlocking, the door locking / unlocking device is unlocked. Device 4
By means of 1, it is turned counterclockwise against the force of the spring 57 and is automatically unlocked.

Next, the human body detection circuit 40 and the sensor will be described in detail from an electrical point of view. That is, a first electrode 50a made of a metal thin film formed by gold plating, sputtering or the like on the entire surface of the resin door handle 50, and a second electrode 51a made of a metal plate disposed on the back side of the resin escutcheon 51 A capacitance is formed by the first electrode 50a.
Both the first and second electrodes 51a are set to be equal, or the first electrode 50a is set to be larger.

The first electrode 50a and the second electrode 51
The positional relationship a is set such that the second electrode 51a enters the projection plane when the first electrode 50a is projected onto the second electrode 51a. That is, all the electrode surfaces of the second electrode 51a are within the range indicated by the symbol X shown in FIG.
Only the portion (the area indicated by the symbol X shown in FIG. 5) of the outer surface of the escutcheon 51 (outside of the vehicle) located on the back side of the door handle 50 is set so as to overlap with the electrode surface of FIG. An electric field is generated, and a space formed below the electric field (a range indicated by a symbol Y in FIG. 5).
Does not generate an electric field.

For this purpose, the first and second electrodes 50a, 50a
By placing the fingertip in the range X between 1a (see FIG. 5), the dielectric constant between the first and second electrodes 50a and 51a changes in a direction to increase.

The change in the dielectric constant may be detected as a voltage change by a bridge type circuit configuration shown in FIG. In the figure, reference numeral 60 denotes an oscillation circuit, 61 denotes a bridge circuit (C1 to C3 are setting capacitors, C4 is a capacitor formed by the first and second electrodes 50a and 51a), and 62 is a comparison circuit.

As shown in FIG. 8, a capacitor C4 having a capacitance between the first and second electrodes 50a and 51a is connected to the oscillation circuit 63, and the oscillation frequency of the oscillation circuit 63 is changed. The detection may be performed by the comparison circuit 65 via the / V conversion circuit 64.

In the above embodiment, a pull-up type door handle has been described, but a grip type door handle may be used.

[0024]

According to the present invention, the capacitance means can be integrally provided between the escutcheon and the handle constituting the door opening device. Further, since the configuration is simple, there is no need to largely change the configuration of the conventional door opening device.

Also, when the passenger tries to open the door by using this device, the door is automatically unlocked. Therefore, even when both hands are closed, a person with a disability or a weak arm is required. Even those who cannot enter can easily unlock the door.

Furthermore, since a simple circuit configuration is sufficient, the cost is not significantly increased. Also, the door will not be unlocked unless you put your fingertips behind the door handle,
Hard to malfunction.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram for describing an outline of a first embodiment of the present invention.

FIG. 2 is a perspective view of an assembly of a door handle 50 and an escutcheon 51 in FIG.

FIG. 3 is an explanatory cross-sectional view of a main part of the perspective view shown in FIG. 2 for explaining the present invention;

FIG. 4 is an explanatory sectional view of the door handle 50;

FIG. 5 is an explanatory diagram for explaining the operation of the first embodiment.

FIG. 6 is a block diagram of a circuit system used in the first embodiment.

FIG. 7 is an example of a specific circuit block diagram of the human body detection circuit 40 of FIG. 6;

8 is another example of a specific circuit block diagram of the human body detection circuit 40 shown in FIG.

FIG. 9 is a circuit block diagram of a conventional keyless system.

FIG. 10 is a circuit block diagram of a conventional immobilizer system.

[Explanation of symbols]

 Reference Signs List 30 portable remote controller 31 transponder 32 antenna 33 CPU 34 EEPROM 35 input / output circuit 36, 37 drive circuit 38 amplifier circuit 40 human body detection circuit 41 door locking / unlocking device 42 injector, igniter 50 resin door handle 50a, 51a electrode 51 escutsion 52 side Door 53 Outer panel 54 Recess 55 Handle arm 56 Axis 57 Spring 60, 63 Oscillation circuit 61 Bridge circuit 62, 65 Comparison circuit 64 F / V conversion circuit

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) E05B 49/00 E05B 49/00 K 65/12 65/12 A 65/20 65/20

Claims (5)

[Claims] 1. An escutcheon attached to a door side, a handle electrically insulated and held by the escutcheon, and capacitance means having electrodes formed on each of the escutcheon side and the handle side. A vehicle door opening operation detecting method for judging an operation state of the steering wheel based on a magnitude or change of the dielectric or the like between the electrodes. 2. An escutcheon attached to a door side, a handle electrically insulated and held by the escutcheon, and capacitance means having electrodes formed on each of the escutcheon side and the handle side. A vehicle that determines an operation state of the handle based on a magnitude or change of a dielectric constant between the electrodes, and that determines that there is an operation of the handle, operates a door opening mechanism to open the door. Door opening device. 3. The vehicle door according to claim 1, wherein the capacitance means detects a change in the dielectric constant by interposing a part of a human body between the escutcheon and a steering wheel. Opening device. 4. One of the electrodes of the capacitance means is formed on the handle, and the other electrode is formed on a surface facing the escutcheon so as to face the handle. 4. The vehicle door opening device according to claim 1, wherein: 5. The vehicle door opening device according to claim 4, wherein the electrode provided on the escutcheon side is provided on a surface of the escutcheon.