JPH0532229U - Automatic parking equipment - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide an automatic parking device that does not malfunction even if the driver mistakenly operates the system switch during normal traveling. According to a detection signal from a garage position sensor 12 and a vehicle speed sensor 14, an electronic control unit ECU 10 sends a control signal to a drive motor 18 and operates a steering wheel 16 to guide a vehicle to the garage. The interlock switch 26 interlocking with the shift lever is closed only when the shift lever is set to the parking range, and the relay 28 is closed to supply power to the electronic control unit ECU 10. When the system switch 24 is closed in this state, automatic parking is started.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an automatic parking device, and more particularly to an automatic parking device having improved system starting conditions.

[0002]

[Prior Art]

 BACKGROUND ART Conventionally, an automatic parking device for automatically guiding a vehicle to a narrow parking space or the like has been developed for the purpose of reducing driver's operation, as disclosed in Japanese Utility Model Laid-Open No. 61-16206. In such an automatic parking system, the position sensor provided on the vehicle detects the relative position between the vehicle and the parking compartment, and based on this positional relationship, the steering, accelerator, or brake of the vehicle is controlled to enter the parking compartment. Induce. A system switch for operating this automatic parking device is usually installed in the driver's seat.By closing this system switch, the control device operates, and it determines whether the vehicle is moving forward or backward to the steering wheel drive circuit. Steering is performed by sending a control signal.

[0003]

[Problems to be solved by the device]

 However, in the configuration in which the operation is started by closing the system switch in this way, for example, even if the driver mistakenly operates the system switch during high-speed driving, the automatic parking device starts operating. There was a problem.

The present invention has been made in view of the above problems of the prior art. The purpose of the present invention is to prevent the system from malfunctioning even if the driver mistakenly operates the system switch, and the driver can park the vehicle automatically. It is to provide a highly reliable automatic parking device that operates the system only when there is an intention to do so.

[0005]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention comprises a control device for controlling the steering of the vehicle based on the positional relationship between the vehicle position and the parking compartment, and the control device is operated by closing the system switch. In the automatic parking device that guides the vehicle to the parking area, the sensor that detects the position of the shift lever and the control device when the position of the shift lever is in the parking range and the system switch is closed. And an actuating means for operating.

[0006]

[Action]

 As described above, the automatic parking device of the present invention is configured such that the control device starts to operate only when the shift lever is set to the parking range position, and accordingly, when the shift lever is in the forward or reverse position, the automatic parking device is automatically parked. Will not be done.

[0007] Since the fact that the shift lever is set to the parking range is considered to reflect the driver's intention to park, the shift lever is set to the parking range and the system switch is closed. It is possible to perform automatic parking depending on the driver's intention by operating the system only when the vehicle is driven.

[0008]

【Example】

 An embodiment of an automatic parking device according to the present invention will be described below with reference to the drawings.

FIG. 1 shows a circuit diagram of this embodiment. An electronic control unit (hereinafter referred to as ECU) 10 is provided as a control device for controlling the steering of the vehicle for automatic parking. The ECU 10 has a garage position sensor that detects the position of the garage, which is a parking compartment. 12 and a detection signal from a vehicle speed sensor 14 that detects the speed of the vehicle are input. The ECU 10 calculates the relative position between the vehicle and the garage based on the detection signal from the garage position sensor 12, and supplies a control signal to the drive motor 18 of the steering wheel 16 to perform steering control. In addition, a control signal is sent to the shift-by-wire ECU 30, and the shift actuator 32 operates the shift. The steering wheel 16 is provided with a steering angle sensor 20 and an electromagnetic clutch 22. The steering angle is feedback-controlled on the basis of a detection signal from the steering angle sensor 20, and the electromagnetic clutch 22 is controlled to be opened / closed for automatic steering. / Perform manual steering.

A system switch 24 installed at a predetermined position near the driver's seat is connected to the ECU 10, and the driver operates the system switch 24 to close the circuit.

Here, what is characteristic of this embodiment is that an interlock switch 26 interlocking with the shift lever and a relay 28 for supplying power to the ECU 10 are provided as a sensor for detecting the position of the shift lever. . The interlocking switch 26 is a multi-contact switch, and one contact is grounded and the other contact is connected to the exciting coil 28a of the relay 28. Then, only when the shift lever is set to the parking range, the interlocking switch is closed by switching to P in the figure, and a current flows through the exciting coil 28a to close the switch 28b. When the range is set to, for example, forward (D) or reverse (R), it is always open. Therefore, the relay 28 is closed only when the shift lever is set to the parking range, and power is supplied to the ECU 10.

The operation of this embodiment will be described in detail below with reference to the flowchart of FIG.

First, in S 101, it is determined whether or not the shift lever is in the parking range (P) position. This determination is made based on whether the interlock switch 26 is closed as described above. When the shift lever is not in the parking range, the interlock switch 26 is opened so that the current state is maintained. On the other hand, when the shift lever is set in the parking range, a current flows through the exciting coil 28a of the relay 28. Therefore, the relay is closed in S102. As a result, power is supplied to the ECU 10, the drive motor 18 of the steering wheel 16, and the electromagnetic clutch 22, and these are in an operable state as shown in S103.

Next, in S104, it is determined whether or not the system switch 24 is closed, and if YES is determined, the process proceeds to S105, and automatic parking system sequential is executed.

Therefore, when the shift lever is set to a position other than the parking range, the automatic parking system sequential is not executed even if the system switch 24 is closed.

As the automatic parking system sequential, the following sequential is used in this embodiment. That is, first, the ECU 10 detects the relative position between the own vehicle and the garage based on the detection signal from the garage position sensor 12, supplies a control signal to the drive motor 18, and turns to a position where the own vehicle and the garage are vertical. Drive. Then, the center coordinates of a circle inscribed between the front and rear center axes of the own vehicle and the garage center line are calculated, and the vehicle is advanced straight to the contact point between the inscribed circle and the vehicle front and rear center line. After that, a control signal is sent again to the drive motor 18 to drive the vehicle to turn along the inscribed circle to guide the vehicle to the center line of the garage. Finally, the vehicle is moved forward or backward along the garage centerline to guide the vehicle to the garage.

As described above, in this embodiment, by adopting the configuration in which the power is supplied to the ECU 10 and the drive motor 18 only when the shift lever is set to the parking range by the interlock switch interlocking with the shift lever, For example, even if the driver mistakenly operates the system switch 24 during high-speed traveling, the ECU 10 does not start operating, and the reliability of the system can be significantly improved.

[0018]

[Effect of the device]

 As described above, according to the automatic parking system of the present invention, the automatic parking system operates only when the system switch is closed and the shift lever is in the parking range position. Even if you operate, there is an effect that you can reliably perform automatic parking without malfunctioning.

[Brief description of drawings]

FIG. 1 is a circuit diagram of an embodiment of the present invention.

FIG. 2 is an operation flowchart of the present embodiment.

[Explanation of symbols]

 10 electronic control unit ECU 24 system switch 26 interlocking switch 28 relay

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Claims (1)

[Scope of utility model registration request] 1. An automatic control system, comprising: a control device for controlling steering of a vehicle based on a positional relationship between a vehicle position and a parking space, and closing the system switch to operate the control device to guide the vehicle to the parking space. In the parking device, a sensor for detecting the position of the shift lever, and an operating means for operating the control device when the position of the shift lever is in the parking range and the system switch is closed. Characteristic automatic parking device.