JP2009241693A - Control method for wiper device and wiper controller - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To detect the failure of a switch input circuit to be operated when abnormality occurs in communication while the LAN system is normal, and to enable a previous action such as repair or the like. <P>SOLUTION: A wiper device 1 is equipped with a wiper blade 2a driven by a motor 3a, and a wiper blade 2b driven by a motor 3b. The motors 3a, 3b are drive-controlled by control microcomputers 5a, 5b respectively. The control microcomputers 5a, 5b are connected by a communication wire 7. The control microcomputers 5a, 5b simultaneously control the motors 3a, 3b based on the positional relationship of both blades while exchanging the positional information of the blades 2a, 2b through the communication wire 7. The information obtained through an on-vehicle LAN8 and the information obtained through a switch signal wire 10 are compared on the setting state of a wiper switch 9, and when the latter is not changed though the former is changed, it is determined (S3→S4→S7) that the failure exists in the switch input system. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a control technology for a vehicle wiper device, and more particularly, to a control technology for an abnormal communication between motors in a counter-wiping type wiper device.

  2. Description of the Related Art In recent years, in a wiper device for a vehicle such as an automobile, particularly a wiper device of the opposite wiping type (opposite type), each wiper arm on the driver's seat side and on the passenger seat side is individually motor-driven as disclosed in JP-A-11-301409. The method is adopted. In such a wiper device, the motors are individually controlled while looking at the position angle of each blade so that the left and right wiper blades (hereinafter abbreviated as blades as appropriate) do not interfere on the wiping surface. For example, in the device described in the above publication, the position angle of the left and right blades is constantly monitored by the wiper control device. A target angle difference is set in advance between both blades, and the left and right motors are individually speed controlled so that the difference between the target angle difference and the measured angle difference is reduced while referring to the position angle of the other blade. .

  In such a wiper device, the left and right motors are housed in a motor unit together with a sensor that outputs a relative position signal indicating the amount of blade movement in proportion to the motor rotation angle and an absolute position signal indicating the blade position. A control microcomputer is arranged in each motor unit, and a motor unit that drives one (for example, a driver side) blade is connected to an ECU that is a control device on the vehicle body side. From the ECU to the motor unit, ON / OFF of the wiper switch, switch information such as LO, HI, INT, and the like are input via the in-vehicle LAN. The motor units are connected by a communication line, and each control microcomputer exchanges information on the position of each other's blades via the communication line so that the blades do not interfere with each other and the angle difference does not increase. The motor is controlled synchronously.

However, in the above-described wiper device, when a communication abnormality occurs in the LAN system, there is a problem that the wiper device cannot be driven. When a communication abnormality occurs during the wiper operation, the wiper blade suddenly moves during the operation. May stop. In order to prevent such a sudden wiper stop, a wiper device having a switch input circuit 54 for directly connecting the CPU 52 of the motor unit 51 and the wiper switch 53 as shown in FIG. 4 has been proposed. In this case, when an abnormality occurs in the communication state of the in-vehicle LAN 55, the CPU 52 grasps the setting state of the wiper switch 53 via the switch input circuit 54 directly connected to the wiper switch 53, and secures a desired operation. The wiper is stopped when an error occurs.
JP 11-321569 A Japanese Patent Laid-Open No. 11-301417

  However, even in such a system that can operate based on a direct switch input signal, if the switch input circuit 54 fails, the wiper device is activated when a communication abnormality occurs after all. There was a problem that could not.

  An object of the present invention is to detect a failure of a switch input circuit that should be operated when a communication abnormality occurs while the LAN system is normal, and to enable early response such as repair, thereby enabling Secure the operation of the wiper device more reliably.

  The wiper device control method of the present invention is connected to a first motor driven and controlled by a first control circuit, a first wiper blade driven by the first motor, and the first control circuit via a communication line. A second motor that is driven and controlled by the second control circuit, and a second wiper blade that is driven by the second motor, and the first and second wiper blades are controlled according to the setting state of the wiper switch. A control method for a vehicle wiper device in which operation control is performed, wherein the first control circuit acquires control information from a vehicle side including a setting state of the wiper switch via a vehicle information communication system, and The setting state of the wiper switch is acquired via a switch input system directly connected to the wiper switch, and the first control circuit is acquired via the vehicle information communication system. The wiper switch setting state is compared with the wiper switch setting state acquired via the switch input system. When the former has changed but the latter has not changed, the switch input It is characterized by judging that the system is faulty.

  In the present invention, the information acquired via the vehicle information communication system is compared with the information acquired via the switch input system regarding the setting state of the wiper switch, and the information on the vehicle information communication system side has changed. Nevertheless, if there is no change in the information on the switch input system side, it is determined that the switch input system has failed. For this reason, when an abnormality occurs in the switch input system, the occurrence can be detected promptly. For example, the fact can be notified to the second control circuit, or the contents can be stored in the storage means and read later. It is possible to quickly take action such as setting a state.

  In the wiper device control method, when the first control circuit determines that a failure has occurred in the switch input system, the first control circuit transmits a failure signal indicating a failure of the switch input system to the second control circuit. May be. When the first control circuit determines that a failure has occurred in the switch input system, the first control circuit may store failure occurrence information indicating a failure in the switch input system in a storage unit.

  The wiper control device of the present invention includes a first wiper blade driven by a first motor and a second wiper blade driven by a second motor, and the first and second wiper blades are controlled according to a setting state of a wiper switch. A control device for a vehicle wiper device in which operation control of a second wiper blade is performed, wherein the control device transmits vehicle control information including a setting state of the wiper switch, and a vehicle information communication system, Connected to a switch input system directly connected to the wiper switch, connected to the first control circuit for controlling the drive of the first motor, and connected to the first control circuit via a communication line, and controlled to drive the second motor. A second control circuit that performs the control, the first control circuit through the switch input system and the setting state of the wiper switch acquired through the vehicle information communication system Compared with the obtained setting state of the wiper switch, when there is a change in the former, but there is no change in the latter, it has a switch input system diagnostic unit that determines that the switch input system is faulty Features.

  In the present invention, the first control circuit compares the wiper switch setting state acquired via the vehicle information communication system with the wiper switch setting state acquired via the switch input system, and changes to the former. If a change does not occur in the latter case, a switch input system diagnosis unit is provided to determine that the switch input system is faulty. Therefore, if an abnormality occurs in the switch input system, the occurrence is detected quickly. For example, it is possible to promptly take measures such as notifying the second control circuit of the fact or saving the contents in the storage means so that the contents can be read later.

  In the wiper control device, when the first control circuit determines that a failure has occurred in the switch input system, the first control circuit transmits a failure signal indicating a failure of the switch input system to the second control circuit. Also good. When the first control circuit determines that a failure has occurred in the switch input system, the first control circuit may store failure occurrence information indicating a failure in the switch input system in a storage unit.

  On the other hand, another wiper device control method of the present invention includes a motor that is driven and controlled by a control circuit, and a wiper blade that is driven by the motor, and the operation of the wiper blade according to the setting state of the wiper switch. A control method for a vehicle wiper device in which control is performed, wherein the control circuit acquires control information from a vehicle side including a setting state of the wiper switch via a vehicle information communication system, and transmits the control information to the wiper switch. The wiper switch setting state is acquired via a directly connected switch input system, and the control circuit is configured to acquire the wiper switch setting state acquired via the vehicle information communication system and the switch input system. Compared with the acquired setting state of the wiper switch, if the latter does not change despite the change in the former, Characterized by determining a failure of the switch input system. In this case, when it is determined that a failure has occurred in the switch input system, the control circuit may store failure occurrence information indicating a failure in the switch input system in the storage means.

  Another wiper device control device of the present invention comprises a wiper blade driven by a motor, and controls the operation of the wiper blade according to the setting state of the wiper switch. The control device is connected to a vehicle information communication system that transmits control information from the vehicle side including a setting state of the wiper switch, and a switch input system that is directly connected to the wiper switch. A control circuit that performs drive control, wherein the control circuit includes a setting state of the wiper switch acquired through the vehicle information communication system and a setting state of the wiper switch acquired through the switch input system. In comparison, if the former does not change but the latter does not change, the switch input system determines that the switch input system is faulty. Characterized in that it has a cross-sectional portion. In this case, when it is determined that a failure has occurred in the switch input system, the control circuit may store failure occurrence information indicating a failure in the switch input system in the storage means.

  According to the wiper device control method of the present invention, for the setting state of the wiper switch, the information acquired through the vehicle information communication system is compared with the information acquired through the switch input system, and the vehicle information communication system side Even if the information has changed, if the switch input system information does not change, it is determined that the switch input system has failed. If an abnormality occurs in the switch input system, the occurrence is detected immediately. It becomes possible to do. For this reason, it is possible to take a quick response when the switch input system is abnormal, and it is possible to perform an early repair response while the vehicle information communication system is normal. Therefore, when the vehicle information communication system is abnormal, it is possible to avoid in advance the situation that the wiper device eventually stops due to the failure of the switch input system, and the backup function by the switch input system is utilized, and when the vehicle-mounted LAN is abnormal. In this case, the wiping operation of the wiper device can be ensured.

  According to the wiper device control device of the present invention, the first control circuit compares the wiper switch setting state acquired via the vehicle information communication system with the wiper switch setting state acquired via the switch input system. If a change occurs in the former but no change occurs in the latter, a switch input system diagnosis unit is provided to determine that the switch input system has failed. Can be detected promptly. For this reason, it is possible to take a quick response when the switch input system is abnormal, and it is possible to perform an early repair response while the vehicle information communication system is normal. Therefore, when the vehicle information communication system is abnormal, it is possible to avoid in advance the situation that the wiper device eventually stops due to the failure of the switch input system, and the backup function by the switch input system is utilized, and when the vehicle-mounted LAN is abnormal. In this case, the wiping operation of the wiper device can be ensured.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is an explanatory diagram showing an overall configuration of a wiper device driven by a control method / control device according to an embodiment of the present invention. A wiper device 1 shown in FIG. 1 includes a wiper blade 2a (first wiper blade) and 2b (second wiper blade) on a driver side (hereinafter abbreviated as DR side) and a passenger seat side (hereinafter abbreviated as AS side). ) And a so-called counter-wiping type wiper device. A DR side motor (first motor) 3a and an AS side motor (second motor) 3b (hereinafter abbreviated as motors 3a and 3b) are separately provided on the DR side and the AS side, respectively. The blades 2a and 2b are driven by the motors 3a and 3b and perform wiping operation in an opposing manner between an upper inversion position set on both ends of the windshield and a lower inversion position set in the lower winder center of the windshield. Do. Note that “a, b” in the reference numerals indicates members and portions related to the DR side and the AS side, respectively.

  A blade rubber member (not shown) is attached to the blades 2a and 2b. The rubber member is brought into close contact with the windshield of the vehicle and moved to be present in the wiping areas 11a and 11b indicated by broken lines in FIG. Water droplets to be wiped away. The blades 2a and 2b are supported by wiper arms 13a and 13b fixed to the tips of the wiper shafts 12a and 12b, and perform swinging motions left and right by drive systems 14a and 14b using the motors 3a and 3b as drive sources. . The drive systems 14a and 14b include a link mechanism including motors 3a and 3b, crank arms 15a and 15b, connecting rods 16a and 16b, drive levers 17a and 17b, and wiper arms 13a and 13b.

  Driving levers 17a and 17b are further attached to the wiper shafts 12a and 12b to which the wiper arms 13a and 13b are fixed. Connecting rods 16a and 16b are attached to the end portions of the drive levers 17a and 17b. The other ends of the connecting rods 16a and 16b are connected to the tip ends of crank arms 15a and 15b fixed to the output shafts 18a and 18b of the motors 3a and 3b. When the motors 3a, 3b are driven and the output shafts 18a, 18b rotate, the crank arms 15a, 15b rotate, and this movement is transmitted to the drive levers 17a, 17b via the connecting rods 16a, 16b. Thereby, the rotational motion of the motors 3a and 3b is converted into the swing motion of the wiper arms 13a and 13b, and the blades 2a and 2b reciprocate between the upside down positions.

  The motors 3a and 3b are accommodated in the motor units 4a and 4b. In the motor units 4a and 4b, a relative position signal (motor pulse) indicating a blade movement amount in proportion to the motor rotation angle or a specific blade position A sensor (not shown) is provided for outputting an absolute position signal indicating. The motor units 4a and 4b are further provided with control microcomputers 5a (first control circuit) and 5b (second control circuit) for calculating position information of the blades 2a and 2b based on the sensor output signals. The DR motor unit 4a is connected to an ECU 6 serving as a vehicle side controller via an in-vehicle LAN 8 (vehicle information communication system, hereinafter abbreviated as LAN 8).

  Switch information such as ON / OFF of the wiper switch, Lo, Hi, INT (intermittent operation), vehicle speed information, and the like are input to the motor unit 4a from the ECU 6 via the LAN 8. The motor units 4a and 4b are connected to each other via a communication line 7. The motor 3a connected to the ECU 6 is on the master side, and the motor 3b connected to the motor 3a on the communication line 7 is on the slave side. Both motors are controlled.

  The control microcomputers 5a and 5b of both units 4a and 4b acquire the blade position information of the other party via the communication line 7. Here, the relative position signal described above is a pulse signal generated with the rotation of the motor, and a pulse number proportional to the rotation angle of the motor is output. On the other hand, the absolute position signal is a single signal generated when the blades 2a and 2b come to the lower inverted position. Since the rotational speeds of the motors 3a and 3b and the rotational speeds of the output shafts 18a and 18b are in a fixed relationship based on the reduction ratio, the rotational angles of the output shafts 18a and 18b can be calculated from the number of pulses. On the other hand, the rotation angle of the output shafts 18a and 18b and the movement angle of the blades 2a and 2b have a certain correlation based on the link mechanism of the drive systems 14a and 14b. Therefore, the movement angle of the blades 2a and 2b can be known by integrating the number of pulses of the relative position signal.

  Therefore, the control microcomputers 5a and 5b detect the current positions of the blades 2a and 2b based on a combination of the absolute position signal indicating the lower inversion position and the number of pulses. The control microcomputers 5a and 5b exchange the position information via the communication line 7 and synchronously control the motors 3a and 3b based on the positional relationship between both blades. That is, the control microcomputers 5a and 5b first perform forward / reverse control of the motors 3a and 3b based on the blade position on its own side. As a result, the blades 2a and 2b perform a reciprocating wiping operation between the upside down positions. At the same time, the control microcomputers 5a and 5b control the motors 3a and 3b based on the blade position information of both blades 2a and 2b, and control the wiper device 1 so that the blades do not interfere with each other and the angle difference does not increase. .

  FIG. 2 is a block diagram showing the configuration of the control system of the wiper device 1. The control microcomputers 5a and 5b are provided with CPUs 21a and 21b and data transmission / reception units 22a and 22b. The control microcomputer 5a is connected to the ECU 6 via the LAN 8, and receives wiper switch information indicating the setting state of the wiper switch 9 (ON / OFF, operation mode setting such as Lo, Hi, INT, etc.) from the ECU 6. . ROMs (storage means) 24a and 24b are further provided in the control microcomputers 5a and 5b, and control programs and various control information are stored therein.

  The control microcomputer 5a is provided with a switch signal input unit 23a to which the switch signal of the wiper switch 9 is directly input. The switch signal input unit 23a is connected to the wiper switch 9 via a switch signal line 10 (hereinafter abbreviated as signal line 10), and forms a switch input system SW. The CPU 21a can directly acquire a switch signal (wiper switch information) indicating ON / OFF of the wiper switch 9 via the switch input system SW without going through the LAN 8.

  The CPUs 21a and 21b are central processing units. Here, the CPU 21a connected to the ECU 6 is the master side, and the CPU 21b is the slave side. The CPUs 21a and 21b are connected to the communication line 7 via the data transmission / reception units 22a and 22b, and exchange position information and operation instructions with each other through them. The CPU 21a on the master side controls the operation of the motor 3a based on the position information of the blade 2b from the control microcomputer 5b and the position information of itself (blade 2a) according to the state of the wiper switch 9. The CPU 21b on the slave side controls the operation of the motor 3b based on the position information of the blade 2a from the control microcomputer 5a and the position information of itself (blade 2b) in accordance with an instruction from the control microcomputer 5a.

  The CPUs 21a and 21b are provided with motor drive control units 31a and 31b and drive control calculation units 32a and 32b, respectively. The drive control calculation units 32a and 32b detect relative position signals and absolute position signals from the motors 3a and 3b, and based on the current blade position, the positional relationship between both blades, motor speed, load, wiper switch information, and the like. The control mode of the motors 3a and 3b is calculated. The motor drive control units 31a and 31b instruct the motors 3a and 3b on the rotation direction, duty, etc. based on the calculation results of the drive control calculation units 32a and 32b, and appropriately operate the blades 2a and 2b between the upside down positions. .

  Further, the CPU 21a is provided with a LAN communication state detection unit 33a for detecting the communication state of the LAN 8. The LAN communication state detection unit 33a constantly monitors the communication state of the LAN 8 and checks whether communication is interrupted or an abnormal signal is input. The CPU 21a is further provided with a switch information input switching unit 34a for switching a wiper switch information acquisition path when a communication abnormality occurs in the LAN 8. The switch information input switching unit 34 a switches the input channel of the wiper switch information from the LAN 8 via the signal line 10 when the LAN communication state detection unit 33 a detects a communication abnormality of the LAN 8. That is, the CPU 21a directly takes in the switch signal of the wiper switch 9 via the signal line 10 when a communication abnormality occurs in the LAN 8.

  In the wiper device 1 having such a configuration, when communication abnormality occurs in the LAN 8, the following processing is performed. As described above, the communication state of the LAN 8 is constantly monitored by the LAN communication state detection unit 33a of the control microcomputer 5a. When the communication of the LAN 8 is normally performed, the CPU 21a uses the wiper switch information acquired via the LAN 8, and executes normal DR and AS synchronous control by inter-motor communication. In this case, wiper switch information (switch signal of the wiper switch 9) obtained from the signal line 10 is not used.

  On the other hand, when there is an abnormality in the communication state of the LAN 8, for example, when communication is completely interrupted due to disconnection of the LAN 8, or abnormal data is transmitted, communication abnormality processing is executed. This communication abnormality process is executed by the switch information input switching unit 34a, and the input channel of the wiper switch information is switched from the LAN 8 to the signal line 10. That is, when the LAN communication state detection unit 33a detects the occurrence of abnormality in the LAN 8, the switch information input switching unit 34a directly acquires the switch signal via the signal line 10. Then, the drive control calculation units 32 a and 32 b stop using the wiper switch information via the LAN 8 and use the wiper switch information acquired directly from the signal line 10 for the drive control of the wiper device 1.

  In this case, as an emergency evacuation at the time of communication abnormality, it is sufficient if the ON / OFF state of the wiper switch 9 can be grasped at a minimum. For this reason, in the control, when the communication of the LAN 8 is abnormal, only the ON / OFF of the wiper switch 9 is grasped from the switch signal, and the function as the wiper device is limited. That is, when a communication abnormality is detected and the wiper switch 9 is confirmed to be turned on by a switch signal via the signal line 10, only a certain state (for example, Lo wiping) is executed regardless of the state of the wiper switch 9. To do. Thereby, even if communication abnormality occurs in the LAN 8, a minimum wiping function is ensured.

  On the other hand, as described above, if a communication abnormality occurs in the LAN 8 and the switch input circuit such as the switch signal input unit 23a is broken, the wiper device 1 must be stopped. Therefore, in the wiper apparatus 1 according to the present invention, the switch input system diagnosis unit 35a is provided in the CPU 21a, and the states of the switch signal input unit 23a, the signal line 10, and the like are constantly monitored. The switch input system diagnosis unit 35a recognizes the state of the wiper switch 9 via the LAN 8 and collates it with a switch signal obtained from the switch input system. If the information from the switch input system does not change even though the information from the LAN 8 side has changed, it is determined that the switch input system has failed.

  FIG. 3 is a flowchart showing a processing procedure for failure diagnosis of the switch input system. As shown in FIG. 3, the CPU 21a first receives a communication signal from the LAN 8 (step S1), and detects a switch signal indicating the state of the wiper switch 9 by the switch signal input unit 23a (step S2). Next, in step S3, a change in the switch state on the communication side is confirmed. If the switch state has changed, the process proceeds to step S4. This time, a switch signal change in the switch input system (change in wiper switch information). Confirm. At this time, if both switch signals are also changed, the same information (switch state = change) is obtained from both systems, and the switch input system is normal (no failure) in step S5. to decide. In step S6, the switch state after the change (for example, ON) is recognized, and the routine is exited.

  On the other hand, if the change of the switch signal cannot be detected in step S4 despite the change of the switch state on the LAN 8 side, the process proceeds to step S7, and it is determined that some abnormality has occurred in the switch input system. To do. That is, when there is no change in the switch signal in S4, this is a state in which the information does not reach from the switch input system despite the change in the switch state. to decide. In step S8, failure occurrence information (for example, failure code) indicating a failure of the switch input system is stored (stored) in a ROM 24a provided in the control microcomputer 5a. At the same time, the CPU 21a notifies the AS-side CPU 21b that the switch input system has failed (transmits a failure signal indicating a failure of the switch input system). Then, as described above, in step S9, the changed switch state is recognized, and the routine is exited.

  On the other hand, if the switch state on the communication side has not changed in step S3, the process proceeds to step S10, and the change of the switch signal from the switch input system is confirmed as in S4. At this time, if the switch signal has not changed, the same information (switch state = invariant) is obtained from both systems, and it is determined in step S11 that the switch state has not changed, and the routine is exited. .

  On the other hand, if a change in the switch signal is detected in step S10, the process proceeds to step S2, and it is determined that some abnormality has occurred on the LAN 8 side. That is, when there is no change in the switch signal in S10, this is a state in which the switch state is not reached from the communication side even though the switch state is changed in the information from the switch input system. Judged as abnormal. This abnormality determination is different from the abnormality detection (signal interruption, abnormality signal) by the LAN communication state detection unit 33a, but the signal from the LAN 8 is received, but it differs from the information from the switch input system. State. In step S13, the changed switch state is recognized, and the routine is exited.

  As described above, in the control processing according to the present invention, when an abnormality occurs in the switch input system, the occurrence is promptly detected and notified to the other motor unit 4b, or the contents are stored in the ROM later. It can be read out. For this reason, an abnormality in the switch input system can be detected while the LAN 8 is normal, and it can be promptly dealt with, and early repairs can be made. Therefore, it is possible to avoid in advance a situation in which the switch input system is broken, the switch input system cannot be used when the LAN is abnormal, and the wiper device 1 is stopped. As a result, the backup function by the switch input system is utilized, and the wiping operation of the wiper device 1 can be performed even when the in-vehicle LAN is abnormal, so that the driver's field of view can be secured and safety can be improved.

  It goes without saying that the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the invention.

  For example, in the above-described embodiment, it is determined that an abnormality has occurred immediately when there is a mismatch between the information in the communication system and the switch input system. However, if there is a mismatch several times, it may be determined that an abnormality has occurred. . For example, if the switch input state does not change even after detecting the change of the switch state on the communication side within a predetermined time (for example, 10 ms) a predetermined number of times (for example, 5 times) Therefore, the fact that the switch input system has failed may be transmitted to the counterpart unit, or the contents and failure code may be stored in the ROM. Further, the failure of the switch input system may be notified not only to the counterpart unit (here, the motor unit 4b) but also to the ECU 6, and the ECU 6 that has received this is notified by a warning light, sound, buzzer, monitor display, etc. The driver may be informed accordingly.

  In the above-described embodiment, the wiper device that individually drives the DR side and AS side blades 2a and 2b by the two motors 3a and 3b has been described as an example. However, the present invention uses a single motor. The present invention is also applicable to a wiper device that drives both the DR side and AS side wiper blades.

  On the other hand, in the above-described embodiment, when a communication abnormality occurs in the LAN 8, only the predetermined operation (Lo wiping in the above example) is performed by switching the input channel of the wiper switch information. This operation is not limited to the aforementioned Lo wiping, and Hi wiping or INT wiping may be applied. Further, the operation signal setting of the wiper switch 9 may be included in the switch signal via the signal line 10, and the operation according to the setting state of the wiper switch 9 may be executed even when communication is abnormal.

It is explanatory drawing which shows the whole structure of the wiper apparatus driven by the control method and control apparatus which is one Example of this invention. It is a block diagram which shows the structure of the control system in the wiper apparatus of FIG. It is a flowchart which shows the process sequence of a failure diagnosis of a switch input system. It is explanatory drawing which shows the structure of the control system in the conventional wiper apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Wiper apparatus 2a, 2b Blade 3a, 3b Motor 4a, 4b Motor unit 5a, 5b Control microcomputer 6 ECU
7 Communication line 8 In-vehicle LAN (vehicle information communication system)
9 Wiper switch 10 Switch signal line 11a, 11b Wiping area 12a, 12b Wiper shaft 13a, 13b Wiper arm 14a, 14b Drive system 15a, 15b Crank arm 16a, 16b Connecting rod 17a, 17b Drive lever 18a, 18b Output shaft 21a, 21b CPU
22a, 22b Data transmission / reception unit 23a Switch signal input unit 24a, 24b ROM (storage means)
31a, 31b Motor drive control units 32a, 32b Drive control calculation unit 33a LAN communication state detection unit 34a Switch information input switching unit 35a Switch input system diagnosis unit 51 Motor unit 52 CPU
53 Wiper switch 54 Switch input circuit 55 In-vehicle LAN
SW switch input system

Claims (10)

Drive-controlled by a first motor driven and controlled by a first control circuit, a first wiper blade driven by the first motor, and a second control circuit connected to the first control circuit via a communication line. And a second wiper blade driven by the second motor, and the operation of the first and second wiper blades is controlled according to the setting state of the wiper switch. Control method,
The first control circuit acquires control information from the vehicle side including a setting state of the wiper switch via a vehicle information communication system, and the wiper switch via a switch input system directly connected to the wiper switch. Get the setting status of
The first control circuit compares the setting state of the wiper switch acquired through the vehicle information communication system with the setting state of the wiper switch acquired through the switch input system, and changes occur in the former. However, if the latter does not change, it is determined that the switch input system is out of order.   2. The wiper device control method according to claim 1, wherein when the first control circuit determines that a failure has occurred in the switch input system, a failure signal indicating a failure of the switch input system is provided to the second control circuit. A wiper device control method comprising: transmitting.   3. The wiper device control method according to claim 1, wherein when the first control circuit determines that a failure has occurred in the switch input system, it stores failure occurrence information indicating a failure in the switch input system in a storage unit. And a wiper device control method. A first wiper blade driven by the first motor and a second wiper blade driven by the second motor are provided, and the operation control of the first and second wiper blades is performed according to the setting state of the wiper switch. A control device for a vehicle wiper device,
The controller is
A vehicle information communication system that transmits control information from the vehicle side including a setting state of the wiper switch, and a first control that is connected to a switch input system that is directly connected to the wiper switch and performs drive control of the first motor. Circuit,
A second control circuit connected to the first control circuit via a communication line and performing drive control of the second motor;
The first control circuit compares the setting state of the wiper switch acquired through the vehicle information communication system with the setting state of the wiper switch acquired through the switch input system, and changes occur in the former. However, if the latter does not change, the wiper control device includes a switch input system diagnosis unit that determines that the switch input system has failed.   5. The wiper control device according to claim 4, wherein when the first control circuit determines that a failure has occurred in the switch input system, the first control circuit transmits a failure signal indicating a failure of the switch input system to the second control circuit. A wiper control device characterized by:   6. The wiper control device according to claim 4 or 5, wherein when the first control circuit determines that a failure has occurred in the switch input system, it stores failure occurrence information indicating a failure in the switch input system in a storage means. A wiper control device characterized by the above. A control method for a vehicle wiper device, comprising: a motor driven and controlled by a control circuit; and a wiper blade driven by the motor, wherein operation control of the wiper blade is performed according to a setting state of a wiper switch. And
The control circuit acquires control information from the vehicle side including a setting state of the wiper switch via a vehicle information communication system, and sets the wiper switch via a switch input system directly connected to the wiper switch. Get the status,
The control circuit compares the setting state of the wiper switch acquired through the vehicle information communication system with the setting state of the wiper switch acquired through the switch input system. Nevertheless, if the latter does not change, it is determined that the switch input system has failed.   8. The wiper device control method according to claim 7, wherein when the control circuit determines that a failure has occurred in the switch input system, failure control information indicating a failure of the switch input system is stored in a storage unit. Wiper device control method. A wiper blade driven by a motor, and a control device for a vehicle wiper device in which operation control of the wiper blade is performed according to a setting state of a wiper switch,
The controller is
A vehicle information communication system for transmitting control information from the vehicle side including the setting state of the wiper switch; and a control circuit connected to a switch input system directly connected to the wiper switch to control the drive of the motor. ,
The control circuit compares the setting state of the wiper switch acquired through the vehicle information communication system with the setting state of the wiper switch acquired through the switch input system. Nevertheless, the wiper control device includes a switch input system diagnosis unit that determines that the switch input system is faulty when the latter does not change.   10. The wiper control device according to claim 9, wherein when the control circuit determines that a failure has occurred in the switch input system, failure control information indicating a failure of the switch input system is stored in a storage unit. Wiper control device.

Images