JP2015209149A - Electric parking brake control device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electric parking brake control device having an improved convenience.SOLUTION: An electric parking brake control device 10 is equipped with a control part 15 which controls action of an electric parking brake in a vehicle. The control part 15 is started by a vehicle power source 33 when an ignition switch 31 is ON and is made to be in a sleep mode when the ignition switch is OFF. The control part 15 is provided with a port P3 (output part) which outputs a parking signal to a mount unit 20 mounted on the vehicle, and a port P2 (output part) to which a start signal is inputted from the mount unit 20. The control part 15 is started by a unit power source 27 of the mount unit 20 when the start signal is inputted from the mount 20 to the control part in a sleep mode, and outputs the parking signal to the mount unit 20.

Description

  The present invention relates to an electric parking brake control device.

  Conventionally, for example, an electronic control unit described in Patent Literature 1 is known as a control device that controls the operation of an electric parking brake. Such a control device is generally activated when the ignition is turned on to control the operation of the electric parking brake, and when the ignition is turned off, the power is cut to sleep to suppress power consumption. Enter mode.

Special table 2009-506944

  By the way, some vehicles are equipped with a mounting unit such as a bodywork (for example, an aerial work device). In this mounting unit, the operation of the electric parking brake is a requirement for starting operation. There is. That is, for example, in order to start the operation, the mounted unit confirms the operation of the electric parking brake by receiving a parking signal indicating the operation state of the electric parking brake from the control device.

  In this regard, in the above prior art, as described above, since the control device is in the sleep mode when the ignition is off, there is a possibility that the parking signal is not output and the mounted unit cannot be used. For this reason, when the mounted unit is used, the ignition needs to be turned on, which is not convenient.

  This invention is made | formed in view of the said situation, and makes it a subject to provide the electric parking brake control apparatus which can improve the convenience.

  The electric parking brake control device according to the present invention includes a control unit that controls the operation of the electric parking brake in the vehicle. The control unit is activated by the vehicle power source when the ignition is on, and when the ignition is off. The sleep mode is set, and the control unit is provided with an output unit that outputs a parking signal related to the operating state of the electric parking brake to a mounting unit mounted on the vehicle, and an input unit that receives a start signal from the mounting unit. When the activation signal is input from the mounted unit via the input unit in the sleep mode, the control unit is activated by the unit power supply of the mounted unit, and outputs a parking signal from the output unit to the mounted unit.

  According to this electric parking brake control device, even when the ignition mode is in the sleep mode and the activation signal is input from the mounted unit, the control unit is activated using the power of the mounted unit, A parking signal can be output to the on-board unit. Therefore, the mounted unit can be used even when the ignition is off, and the convenience can be improved.

  Moreover, it is preferable that the mounting unit is a bodywork loaded on the vehicle. Examples of the bodywork include an aerial work device. According to this electric parking brake control device, the bodywork can be used even when the ignition is off, and can be suitably applied to a vehicle equipped with the bodywork.

  Moreover, it is preferable that a control part cannot change the operating state of an electric parking brake, when a starting signal is input from the mounting unit and it starts. According to this electric parking brake control device, when the ignition is off, it is possible to prevent the active electric parking brake from being released even when the activation signal is input from the on-board unit and activated.

  ADVANTAGE OF THE INVENTION According to this invention, the electric parking brake control apparatus which can improve the convenience can be provided.

It is a schematic structure figure showing a control system containing an electric parking brake control device concerning one embodiment. It is a sequence diagram explaining operation | movement of the control system of FIG.

  Hereinafter, embodiments according to the present invention will be described in detail with reference to the drawings. In the following description, the same reference numerals are used for the same or corresponding elements, and duplicate descriptions are omitted.

  FIG. 1 is a schematic configuration diagram illustrating a control system including an electric parking brake control device according to an embodiment. The control system 1 includes an electric parking brake control device 10 and a mounting unit 20, and the operation of the mounting unit 20 is referred to an operating state of an electric parking brake (EPKB: Electric Parking Brake, not shown). Control. The control system 1 is used by being mounted on a vehicle such as a commercial vehicle including a truck and a special vehicle. Below, the structure of each part of the control system 1 is demonstrated first.

  The electric parking brake control device 10 includes a control unit 15. The control unit 15 is an electronic control unit (ECU) configured by a computer including, for example, a CPU (Central Processing Unit), a ROM (Read Only Memory), and a RAM (Random Access Memory). The control unit 15 controls the operation of the electric parking brake in the vehicle.

  The control unit 15 is provided with a port P1 to which an activation signal from the ignition switch 31 is input. The control unit 15 is electrically connected to the vehicle power source 33 (battery power source) via the ignition switch 31 at the port P1. The control unit 15 is activated by the vehicle power source 33 when the ignition switch 31 is on and enters a normal mode (wakeup), and when the ignition switch 31 is off, the electrical connection with the vehicle power source 33 is cut and sleeps. It becomes a mode. The control unit 15 controls the operation of the electric parking brake in the normal mode.

  Further, the control unit 15 is provided with a port P2 as an output unit that outputs a parking signal to the mounting unit 20, and a port P3 as an input unit to which an activation signal is input from the mounting unit 20. The parking signal is a signal related to the operating state of the electric parking brake, more specifically, a signal (an operating signal) indicating that the electric parking brake is operating. The activation signal is a switch signal related to activation of the control unit 15 and is input to the control unit 15 as a trigger for confirming the operating state of the electric parking brake before the operation of the on-board unit 20 (details will be described later). ). One ends of harnesses 41 and 43 for connection with the mounting unit 20 are electrically connected to the ports P2 and P3, respectively, and the parking signal and the activation signal are applied via the harnesses 41 and 43, respectively. The

  The mounting unit 20 is mechanical equipment that is mounted and driven in a vehicle. The mounting unit 20 of the present embodiment is a bodywork loaded on a vehicle, and more specifically is an aerial work unit. That is, in the present embodiment, an example applied to an aerial work vehicle is described. The mounting unit 20 includes a bodywork-side control unit 21 that controls the operation of the mounting unit 20, an activation switch 23 and a bodywork device 25 that are electrically connected to the bodywork-side control unit 21, and an electrical connection to the bodywork device 25. And a unit power supply 27 connected to each other. The mounting unit 20 operates the bodywork device 25 by the unit power supply 27 to execute or assist the work at a high place.

  The bodywork side control unit 21 is configured by a computer including, for example, a CPU, a ROM, and a RAM. The bodywork side control unit 21 is electrically connected to the ports P2 and P3 of the control unit 15 via harnesses 41 and 43, respectively. When the activation switch 23 is turned on, the bodywork side control unit 21 outputs an activation signal to the port P2, and waits for a parking signal from the port P3. When receiving the parking signal, the bodywork side control unit 21 operates the bodywork device 25. On the other hand, when the parking signal is not received, the bodywork side control unit 21 does not operate the bodywork device 25. A specific processing procedure of the bodywork side control unit 21 will be described later with reference to FIG. Thus, in the mounting unit 20, it is a requirement for the operation start to confirm the operation of the electric parking brake. This is because it is necessary to reliably control the movement of the vehicle when working at a high place.

  The bodywork device 25 is a drive part, and here is an outrigger for vehicle support. The unit power supply 27 has a sub-battery 29 that is charged from the outside, and a sub-battery device 28 that steps down the voltage applied from the sub-battery 29 to a predetermined voltage and supplies the voltage to the bodywork device 25.

  Next, the operation of the control system 1 when the mounted unit 20 starts to operate when the ignition is off will be described with reference to FIG. FIG. 2 is a sequence diagram for explaining the operation of the control system of FIG. In the following, a state where the ignition switch 31 is turned off and the control unit 15 is in the sleep mode will be described as a start state (START).

  First, when the bodywork side control unit 21 identifies that the start switch 23 is turned on (S11), it outputs a start signal to the control unit 15 (S12). When the activation signal is input from the port P2 in the sleep mode (S21), the control unit 15 is temporarily activated by the power of the activation signal (wakeup, S22). That is, the activation signal applied to the control unit 15 from the mounting unit 20 side also acts as a power supply signal for transporting electric power. At the time of the temporary activation in step S22, the control unit 15 The power source 27 is activated using the power of the power source 27 as a power source.

  After activation, the control unit 15 determines the operating state of the electric parking brake. The determination of the operating state is performed using a general method for determining the operating state of the electric parking brake. If the electric parking brake is operating (YES in S23), the control unit 15 outputs a parking signal from the port P3 to the bodywork side control unit 21 (S24), and then shifts to the sleep mode (S25). On the other hand, if it is determined in step S23 that the electric parking brake is not operating (NO in S23), the process shifts to the sleep mode without outputting a parking signal (S25).

  When receiving the parking signal output from the control unit 15 in step S26 (S13), the bodywork side control unit 21 causes the bodywork device 25 to start a predetermined operation (S14). The bodywork side control unit 21 does not operate the bodywork device 25 (does not start the predetermined operation) when the parking signal is not received.

  As described above, in the control system 1, even when the ignition switch 31 is off and the control unit 15 is in the sleep mode, the control unit 15 is activated to output a parking signal to the onboard unit 20. The mounting unit 20 can be used even when the ignition is off.

  In addition, the control part 15 makes impossible the change of the operating state of an electric parking brake, when a starting signal is input from the mounting unit 20 and it starts temporarily in step S22. In other words, the control unit 15 does not change the operating state of the electric parking brake when it is temporarily activated from the sleep mode to confirm the operating state of the electric parking brake. Thereby, it is possible to prevent the electric parking brake being operated from being released when the ignition is off. On the other hand, when the control unit 15 receives an activation signal from the ignition switch 31 and activates the normal mode, the controller 15 can change the operating state of the electric parking brake.

  In addition, when the activation signal is received from the on-board unit 20 in the state in which the activation signal is received from the ignition switch 31 and the normal mode is set, the control unit 15 determines the operating state of the electric parking brake as in step S25. If it is in operation, a parking signal is output from the port P3 to the bodywork side control unit 21, and if it is not in operation, it waits without outputting a parking signal. Thereby, the mounting unit 20 can be used even when the ignition is on. Thus, according to the control system 1, the mounted unit 20 can be used regardless of whether the ignition is on or off. In the present embodiment, as described above, the processing executed by the bodywork side control unit 21 when the ignition is turned on / off is common, and the control on the bodywork side is made common.

  Hereinafter, the operation and effect of the electric parking brake control device 10 according to the present embodiment will be described.

  According to the electric parking brake control device 10 of the present embodiment, even when the ignition switch 31 is off and in the sleep mode, when the activation signal is input from the mounting unit 20, the power of the mounting unit 20 is Can be used to start the control unit 15 and output a parking signal to the onboard unit 20. Therefore, the mounting unit 20 can be used even when the ignition is off, and convenience can be improved.

  The electric parking brake control device 10 operates in the same manner as a normal electric parking brake control device that does not have the port P2 when the harness 43 is not connected. For this reason, it can be used for the control system 1 which does not need to use the mounting unit 20 at the time of ignition off, without requiring a software change. Therefore, it is not necessary to use the electric parking brake control device 10 in accordance with the type (mounting form) of the mounted unit 20, and an increase in variations (variations, product numbers) can be suppressed. In addition, special applications on the mounting unit 20 side (mounting side) can be handled by simply connecting the harness 43 (a parking signal can be output without replacing the control unit 15).

  Further, in the electric parking brake control device 10, the bodywork can be used as the mounting unit 20 even when the ignition is off. That is, the electric parking brake control device 10 can be suitably applied to a vehicle having a bodywork. In addition, although the example applied to the aerial work vehicle provided with the aerial work device has been described in the above embodiment, the application range is not limited to this and may be applied to other work vehicles.

  Further, in the electric parking brake control device 10, the control unit 15 disables the change in the operating state of the electric parking brake when the activation signal is input from the mounting unit 20 and activated. Therefore, when the ignition is turned off, it is possible to prevent the parking brake being operated from being released even when the activation signal is input from the mounting unit 20 and the activation is performed.

  The preferred embodiments of the present invention have been described above. However, the present invention is not limited to the above-described embodiments. The present invention can be modified without departing from the scope described in the claims or applied to other embodiments. May be.

  For example, in the above-described embodiment, the example in which the mounting unit 20 is a body has been described, but various types of mounting units 20 can be employed. For example, a system for preventing forgetting to apply the electric parking brake, a vehicle antitheft system, and the like can be applied as the mounting unit 20. In this case, the mounting unit 20 is provided with a communication unit, and the mounting unit 20 that has received the parking signal from the electric parking brake control device 10 transmits a predetermined signal from the communication unit to an external terminal such as a smartphone, thereby the user. Can grasp the state of the vehicle.

  In the above embodiment, the configuration example in which the operation of the bodywork device 25 is not started when the parking signal is not received has been described. In this case, for example, a predetermined time has elapsed from the output of the activation signal in step S12. At this time, a predetermined notification may be given to the user on the bodywork side. As the predetermined notification, for example, notification sound from a speaker (audio output unit) connected to the bodywork side control unit 21 or notification information on a display screen (display unit) connected to the bodywork side control unit 21 is used. is assumed. As a result, information indicating that the electric parking brake is not operated can be provided to the user, and the convenience can be further improved.

  Moreover, although the said embodiment demonstrated port P2 as an output part and port P3 as an input part provided in the control part 15, only one port which serves as an input part and an output part is only in the control part 15. The provided structure may be sufficient. The connection between the control unit 15 and the bodywork side control unit 21 may be a wireless connection.

  In the above-described embodiment, the case where the mounting unit 20 is a sub-battery type including the unit power source 27 including the sub-battery device 28 and the sub-battery 29 has been described. Alternatively, the unit power supply 27 may be a sub-engine type having a sub-engine device. In the above embodiment, the outrigger for supporting the vehicle has been described as the bodywork device 25 for working at a high place.

DESCRIPTION OF SYMBOLS 1 ... Control system, 10 ... Electric parking brake control apparatus, 15 ... Control part, 20 ... Mounted unit, 21 ... Bodywork side control part, 23 ... Start switch, 25 ... Bodywork apparatus, 27 ... Unit power supply, 28 ... Sub Battery device, 29 ... sub-battery, 31 ... ignition switch, 33 ... vehicle power supply, 41, 43 ... harness, P1 ... port, P2 ... port (output unit), P3 ... port (input unit).

Claims (3)

A control unit for controlling the operation of the electric parking brake in the vehicle;
The control unit is activated by a vehicle power supply when the ignition is on, and is in a sleep mode when the ignition is off.
In the control unit, an output unit that outputs a parking signal related to an operating state of the electric parking brake to a mounting unit mounted on the vehicle;
An input unit to which a start signal is input from the mounted unit,
The controller is
When the activation signal is input from the mounting unit via the input unit in the sleep mode, the unit is activated by a unit power supply of the mounting unit, and the parking signal is output from the output unit to the mounting unit. An electric parking brake control device.   The electric parking brake control device according to claim 1, wherein the mounting unit is a bodywork loaded on the vehicle.   3. The electric parking brake according to claim 1, wherein, when the activation signal is input from the mounted unit and activated, the control unit disables a change in an operating state of the electric parking brake. 4. Control device.

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