Erroneous operation prevention device

Abstract

To provide an erroneous operation prevention device which deters an unintended actuation of a parking brake device when operating a shift lever during a vehicle travel.SOLUTION: This invention provides: an acquisition part for acquiring information on the operation of a shift operation part for actuating a vehicle shift device, and on that of a parking brake operation part for actuating the vehicle parking brake device; and a device control part, which deters the actuation of the parking brake device when the operation of the shift operation part and the operation of the parking brake operation part are performed within a time regarded as simultaneous.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to an erroneous operation prevention device. [Background technology]

[0002] BACKGROUND ART Electric parking brake systems are known that include a parking brake mechanism that applies braking force to wheels by operating an actuator, an operation switch for switching the parking brake mechanism between a braking state and a braking release state, and control means that controls the braking operation of the parking brake mechanism by the actuator in response to operation of the operation switch.

[0003] In some electric parking brake systems, for example, the operation switch is located near the shift device, and if the shift lever is operated with a foreign object caught between the shift lever and the operation switch, the parking brake device may be unintentionally activated even while driving if the foreign object presses the operation switch for a long time. Patent Document 1 discloses technology for preventing unintentional activation of the parking brake device. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 2019-69696 Summary of the Invention [Problem to be solved by the invention]

[0005] However, there is still room for improvement in terms of preventing unintended activation of the parking brake device when the shift lever is operated.

[0006] The present disclosure has been made in consideration of the above points, and aims to provide an erroneous operation prevention device that prevents unintended activation of a parking brake device when a shift lever is operated while the vehicle is traveling. [Means for solving the problem]

[0007] The misoperation prevention device according to the first aspect of the present disclosure includes an acquisition unit that acquires information regarding the operation of a shift operation unit that is operated to activate a shift device of a vehicle and a parking brake operation unit that is operated to activate a parking brake device of the vehicle, and a device control unit that prevents the activation of the parking brake device when the operation of the shift operation unit and the operation of the parking brake operation unit are performed within a time period that is considered to be simultaneous.

[0008] An erroneous operation prevention device according to a second aspect of the present disclosure is the erroneous operation prevention device according to the first aspect, wherein the device control unit uses signals generated based on the operation of the shift operation unit and the parking brake operation unit to determine whether the operation of the shift operation unit and the operation of the parking brake operation unit are performed within a time period considered to be simultaneous.

[0009] An erroneous operation prevention device according to a third aspect of the present disclosure is the erroneous operation prevention device according to the first aspect, wherein the device control unit is provided inside the vehicle and uses the results detected by a sensor that remotely detects the operation of the shift operation unit and the parking brake operation unit to determine whether the operation of the shift operation unit and the operation of the parking brake operation unit were performed within a time period that is considered to be simultaneous.

[0010] An erroneous operation prevention device according to a fourth aspect of the present disclosure is the erroneous operation prevention device according to the third aspect, wherein the sensor is a camera or an infrared sensor.

[0011] An erroneous operation prevention device according to a fifth aspect of the present disclosure is the erroneous operation prevention device according to the first aspect, wherein the device control unit displays a predetermined message on the display unit of the vehicle when the operation of the shift operation unit and the operation of the parking brake operation unit are performed within a time period that is considered to be simultaneous. [Effects of the Invention]

[0012] According to the present disclosure, it is possible to provide an erroneous operation prevention device that prevents unintended activation of a parking brake device when a shift lever is operated while a vehicle is traveling. [Brief explanation of the drawings]

[0013] [Figure 1] 1 is a diagram illustrating a schematic configuration of a vehicle according to an embodiment of the disclosed technology. [Figure 2] FIG. 2 is a block diagram showing an example of the functional configuration of an HMI control ECU. [Figure 3] 4 is a flowchart showing the flow of operation of a vehicle including an HMI control ECU. [Figure 4] 4 is a flowchart showing the flow of operation of a vehicle including an HMI control ECU. DETAILED DESCRIPTION OF THE INVENTION

[0014] An example of an embodiment of the present disclosure will be described below with reference to the drawings. The same reference numerals are used throughout the drawings to designate identical or equivalent components and parts. The dimensional proportions of the drawings are exaggerated for illustrative purposes and may differ from the actual proportions.

[0015] FIG. 1 is a diagram showing a schematic configuration of a vehicle according to this embodiment.

[0016] The vehicle 10 shown in FIG. 1 has a display unit 101, a parking brake operation unit 102, a shift operation unit 103, a speaker 104, an in-vehicle sensor 105, a parking brake device 106, an HMI (Human Machine Interface) control ECU (Electronic Control Unit) 107, a vehicle control ECU 108, and a communication unit 109.

[0017] The display unit 101 is a display installed inside the vehicle's cabin that displays various information, such as a display installed in the driver's seat of the vehicle that displays meters, a display that displays driving guidance and images, a head-up display that uses the windshield as a display, etc.

[0018] The parking brake operation unit 102 is a switch provided in the vehicle cabin for the driver to operate the parking brake device 106 and to activate the parking brake device 106. In other words, the parking brake device 106 is an electric parking brake (EPB). The driver can activate the parking brake device 106 by placing his / her hand on the parking brake operation unit 102 and pulling it.

[0019] The shift operation unit 103 is provided inside the vehicle cabin and is configured to be operated by the driver to operate the vehicle's shift device (not shown), and is provided, for example, in a position near the navigation system or in a position near the center console.

[0020] The speaker 104 is provided in the vehicle interior and is configured to output information to the occupants by voice.

[0021] The interior sensor 105 is a sensor for remotely detecting the conditions inside the vehicle, particularly the parking brake operation unit 102 and the surroundings of the parking brake operation unit 102, and is, for example, a camera, an infrared sensor, etc. When a camera is used as the interior sensor 105, the camera is attached, for example, around the rearview mirror, facing in a direction that allows it to capture images of the driver's seat, the parking brake operation unit 102, and the shift operation unit 103 inside the vehicle.

[0022] The parking brake device 106 is a brake for maintaining the vehicle in a stopped state when the vehicle is parked.

[0023] The HMI control ECU 107 is an ECU provided inside the vehicle and controls the display unit 101, parking brake operation unit 102, shift operation unit 103, and speaker 104. The HMI control ECU 107 includes a CPU (Central Processing Unit), ROM (Read Only Memory), RAM (Random Access Memory), an input / output I / F, and the like. The CPU is a central processing unit that executes various programs and controls each unit. That is, the CPU reads programs from the ROM and executes the programs using the RAM as a working area. The ROM stores various programs and various data. The RAM temporarily stores programs or data as a working area.

[0024] The HMI control ECU 107 is an example of an erroneous operation prevention device of the present disclosure. The HMI control ECU 107 executes control to prevent erroneous operation of the parking brake operation unit 102. Specific control by the HMI control ECU 107 will be described later.

[0025] The vehicle control ECU 108 is an ECU provided inside the vehicle and controls the vehicle interior sensors 105 and the parking brake device 106. Like the HMI control ECU 107, the vehicle control ECU 108 is configured to include a CPU, ROM, RAM, input / output I / F, etc. The CPU is a central processing unit that executes various programs and controls each part. That is, the CPU reads programs from the ROM and executes the programs using the RAM as a working area. The ROM stores various programs and various data. The RAM temporarily stores programs or data as a working area.

[0026] The communication unit 109 communicates between the HMI control ECU 107 and the vehicle control ECU 108. The communication between the HMI control ECU 107 and the vehicle control ECU 108 is performed based on a communication standard such as the CAN (Controller Area Network) protocol.

[0027] Next, the functional configuration of the HMI control ECU 107 will be described.

[0028] FIG. 2 is a block diagram showing an example of the functional configuration of the HMI control ECU 107.

[0029] 2, the HMI control ECU 107 has, as its functional components, an acquisition unit 111 and a device control unit 112. Each functional component is realized by the CPU reading and executing an erroneous operation prevention program stored in the ROM.

[0030] The acquisition unit 111 acquires information regarding the operation of the parking brake operation unit 102 and the shift operation unit 103. Specifically, the acquisition unit 111 acquires signals generated based on the operation of the parking brake operation unit 102 and the shift operation unit 103.

[0031] The device control unit 112 controls the display unit 101, the parking brake operation unit 102, the shift operation unit 103, and the speaker 104. In this embodiment, the device control unit 112 controls to inhibit the operation of the parking brake device 106 when the operation of the parking brake operation unit 102 and the operation of the shift operation unit 103 are performed within a time period that is considered to be simultaneous. The time period that is considered to be simultaneous is not limited to completely simultaneous, but also includes a predetermined time period, for example, within 1 to 2 seconds.

[0032] The device control unit 112 may determine whether the parking brake operation unit 102 has been operated based on a signal from the parking brake operation unit 102, or may determine this based on the result of sensing by the vehicle interior sensor 105. The result of sensing by the vehicle interior sensor 105 is sent from the vehicle control ECU 108 to the HMI control ECU 107.

[0033] When the operation of the parking brake operating unit 102 and the operation of the shift operating unit 103 are performed within a time period that is considered to be simultaneous, and the operation of the parking brake operating unit 102 and the operation of the shift operating unit 103 continue for a further predetermined time period (e.g., 10 seconds), the device control unit 112 displays a warning message on the display unit 101 or outputs a warning sound from the speaker 104.

[0034] By having such a configuration, the HMI control ECU 107 can suppress the operation of the parking brake device 106 if the operation of the parking brake operating unit 102 and the operation of the shift operating unit 103 are performed within a time period that is considered to be simultaneous while the vehicle is traveling.

[0035] Next, the operation of the vehicle including the HMI control ECU 107 will be described.

[0036] Fig. 3 is a flowchart showing the flow of operation of a vehicle including the HMI control ECU 107. The flowchart shown in Fig. 3 is executed when the parking brake operation unit 102 is operated by an occupant of the vehicle while the vehicle is traveling.

[0037] In step S101, the HMI control ECU 107 determines whether the parking brake operation unit 102 has been operated.

[0038] If the parking brake operation unit 102 is not being operated (step S101; No), the HMI control ECU 107 waits until the parking brake operation unit 102 is operated.

[0039] If the parking brake operating unit 102 has been operated (step S101; Yes), following step S101, the HMI control ECU 107 determines in step S102 whether the shift operating unit 103 has been operated.

[0040] If the shift operation unit 103 is being operated (step S102; Yes), following step S102, the HMI control ECU 107 determines in step S103 whether the operation of the parking brake operation unit 102 and the operation of the shift operation unit 103 are performed within a time period that is considered to be simultaneous.

[0041] If the operation of the parking brake operating unit 102 and the operation of the shift operating unit 103 are not performed within the time period considered to be simultaneous (step S103; No), the HMI control ECU 107 returns to step S101 and determines whether the parking brake operating unit 102 has been operated.

[0042] On the other hand, if the operation of the parking brake operation unit 102 and the operation of the shift operation unit 103 are performed within a time period that is considered to be simultaneous (step S103; Yes), in step S104, the HMI control ECU 107 causes the display unit 101 to display a message indicating that a foreign object is caught in the parking brake operation unit 102. For example, the HMI control ECU 107 causes the display unit 101 to display a message saying "The shift and EPB cannot be operated simultaneously."

[0043] Following step S104, in step S105, the HMI control ECU 107 determines whether the operation of the shift operation unit 103 has continued for a predetermined time (for example).

[0044] If the operation of the shift operation unit 103 continues for a predetermined time (step S105; Yes), in step S106, the HMI control ECU 107 outputs a warning that the operation of the parking brake operation unit 102 and the operation of the shift operation unit 103 are continuing. The HMI control ECU 107 outputs the warning by, for example, displaying a warning message on the display unit 101 or outputting a warning sound from the speaker 104.

[0045] On the other hand, if the operation of the shift operation unit 103 has not continued for the predetermined time (step S105; No), the HMI control ECU 107 returns to step S101 and determines whether the parking brake operation unit 102 has been operated.

[0046] In the above step S102, if the shift operation unit 103 is being operated (step S102; No), following step S102, the HMI control ECU 107 outputs an ON signal for the parking brake device 106 in step S107.

[0047] Following step S107, in step S108, the communication unit 109 transmits an ON signal for the parking brake device 106 to the vehicle control ECU 108. Following step S108, in step S109, the vehicle control ECU 108 receives the ON signal for the parking brake device 106 from the communication unit 109. Following step S109, the vehicle control ECU 108 outputs a parking brake control signal to the parking brake device 106 in step S110. Following step S110, in step S111, the parking brake device 106 applies the brakes based on the reception of the parking brake control signal.

[0048] Following step S111, in step S112, the HMI control ECU 107 determines whether the vehicle has stopped. The HMI control ECU 107 determines whether the vehicle has stopped by obtaining information about the vehicle speed from the vehicle control ECU 108. If the vehicle has not stopped (step S112; No), the process returns to step S101, where the HMI control ECU 107 returns to determining whether the parking brake operation unit 102 has been operated. On the other hand, if the vehicle has stopped (step S112; Yes), the vehicle ends the series of processes.

[0049] Fig. 4 is a flowchart showing the flow of operation of a vehicle including the HMI control ECU 107. The flowchart shown in Fig. 4 is executed when the parking brake operation unit 102 is operated by an occupant of the vehicle while the vehicle is traveling.

[0050] In step S201, the HMI control ECU 107 determines whether the parking brake operation unit 102 has been operated.

[0051] If the parking brake operation unit 102 is not being operated (step S201; No), the HMI control ECU 107 waits until the parking brake operation unit 102 is operated.

[0052] If the parking brake operation unit 102 is being operated (step S201; Yes), following step S201, the HMI control ECU 107 determines in step S202 whether the vehicle interior sensor 105 has detected the presence of a foreign object around the parking brake operation unit 102.

[0053] If a foreign object is present around the parking brake operation unit 102 (step S202; Yes), following step S202, the HMI control ECU 107 determines in step S203 whether the operation of the parking brake operation unit 102 was performed by the foreign object.

[0054] If the operation of the parking brake operating unit 102 is not caused by a foreign object detected by the interior sensor 105 (step S203; No), the HMI control ECU 107 returns to step S201 and determines whether the parking brake operating unit 102 has been operated.

[0055] On the other hand, if the operation of the parking brake operation unit 102 is caused by a foreign object detected by the vehicle interior sensor 105 (step S203; Yes), in step S204, the HMI control ECU 107 causes the display unit 101 to display a message indicating that a foreign object is caught in the parking brake operation unit 102. For example, the HMI control ECU 107 causes the display unit 101 to display a message saying "The shift and EPB cannot be operated at the same time."

[0056] Following step S204, in step S205, the HMI control ECU 107 determines whether the operation of the shift operation unit 103 has continued for a predetermined time (for example).

[0057] If the operation of the shift operation unit 103 continues for a predetermined time (step S205; Yes), in step S206, the HMI control ECU 107 outputs a warning that the operation of the parking brake operation unit 102 and the operation of the shift operation unit 103 are continuing. The HMI control ECU 107 outputs the warning by, for example, displaying a warning message on the display unit 101 or outputting a warning sound from the speaker 104.

[0058] On the other hand, if the operation of the shift operation unit 103 has not continued for the predetermined time (step S205; No), the HMI control ECU 107 returns to step S201 and determines whether the parking brake operation unit 102 has been operated.

[0059] In the above step S202, if there is no foreign object around the parking brake operation unit 102 (step S202; No), the HMI control ECU 107 outputs an ON signal for the parking brake device 106 in step S207 following step S202.

[0060] Following step S207, in step S208, the communication unit 109 transmits an ON signal for the parking brake device 106 to the vehicle control ECU 108. Following step S208, in step S209, the vehicle control ECU 108 receives the ON signal for the parking brake device 106 from the communication unit 109. Following step S209, the vehicle control ECU 108 outputs a parking brake control signal to the parking brake device 106 in step S210. Following step S110, in step S211, the parking brake device 106 applies the brakes based on the reception of the parking brake control signal.

[0061] Following step S211, in step S212, the HMI control ECU 107 determines whether the vehicle has stopped. The HMI control ECU 107 determines whether the vehicle has stopped by obtaining information about the vehicle speed from the vehicle control ECU 108. If the vehicle has not stopped (step S212; No), the process returns to step S201, where the HMI control ECU 107 returns to determining whether the parking brake operation unit 102 has been operated. On the other hand, if the vehicle has stopped (step S212; Yes), the vehicle ends the series of processes.

[0062] Although the embodiments of the present disclosure have been described in detail above with reference to the accompanying drawings, the technical scope of the present disclosure is not limited to such examples. The above-described embodiments are illustrative and do not limit the technical scope of the present disclosure. It is clear that a person skilled in the art of the present disclosure can conceive of various modifications or alterations within the scope of the technical idea described in the claims, and it is understood that these modifications or alterations also naturally fall within the technical scope of the present disclosure.

[0063] Furthermore, the effects described in the above embodiments are explanatory or exemplary and are not limited to those described in the above embodiments. In other words, the technology according to the present disclosure may achieve other effects that are obvious to a person skilled in the art of the present disclosure from the description in the above embodiments, in addition to or instead of the effects described in the above embodiments.

[0064] In the above embodiments, the erroneous operation prevention process executed by the CPU after reading the software (program) may be executed by various processors other than the CPU. Examples of such processors include programmable logic devices (PLDs) whose circuit configuration can be changed after fabrication, such as field-programmable gate arrays (FPGAs), and dedicated electrical circuits, such as application-specific integrated circuits (ASICs), which are processors with circuit configurations specifically designed to execute specific processes. The erroneous operation prevention process may be executed by one of these various processors, or by a combination of two or more processors of the same or different types (e.g., multiple FPGAs, or a combination of a CPU and an FPGA). The hardware structure of these various processors is, more specifically, an electrical circuit that combines circuit elements such as semiconductor devices.

[0065] In addition, in each of the above embodiments, the program for the erroneous operation prevention processing is described as being pre-stored (installed) in ROM, but this is not limiting. The program may be provided in a form recorded on a non-transitory recording medium such as a CD-ROM (Compact Disk Read Only Memory), a DVD-ROM (Digital Versatile Disk Read Only Memory), or a USB (Universal Serial Bus) memory. The program may also be downloaded from an external device via a network. [Explanation of symbols]

[0066] 10 vehicles 101 Display section 102 Parking brake operation unit 103 Shift operation unit 104 Speaker 105 Vehicle interior sensor 106 Parking brake 107 HMI control ECU 108 Vehicle Control ECU 109 Communications Department 111 Acquisition Department 112 Device control section

Claims

1. an acquisition unit that acquires information regarding the operation of a shift operation unit that is operated to operate a shift device of a vehicle and a parking brake operation unit that is operated to operate a parking brake device of the vehicle; a device control unit that inhibits operation of the parking brake device when the operation of the shift operation unit and the operation of the parking brake operation unit are performed within a time period that is considered to be simultaneous; An anti-misoperation device comprising:

2. 2. The erroneous operation prevention device according to claim 1, wherein the device control unit uses signals generated based on the operation of the shift operation unit and the parking brake operation unit to determine whether the operation of the shift operation unit and the operation of the parking brake operation unit are performed within a time period considered to be simultaneous.

3. 2. The erroneous operation prevention device according to claim 1, wherein the device control unit is provided inside the vehicle and uses the results detected by a sensor that remotely detects the operation of the shift operation unit and the parking brake operation unit to determine whether the operation of the shift operation unit and the operation of the parking brake operation unit are performed within a time period that is considered to be simultaneous.

4. The erroneous operation prevention device according to claim 3 , wherein the sensor is a camera or an infrared sensor.

5. The device control unit displays a predetermined message on the display unit of the vehicle when the operation of the shift operation unit and the operation of the parking brake operation unit are performed within a time period that is considered to be simultaneous. The erroneous operation prevention device described in any one of claims 1 to 4.

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