JP3835537B2 - Fault diagnosis device for vehicles - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a failure diagnosis device, and more particularly to a vehicle failure diagnosis device used for diagnosis of a vehicle failure.
[0002]
[Prior art]
In order to diagnose vehicle engines, automatic transmissions, etc., vehicle fault diagnosis devices that connect to each on-board electronic control device that controls them and acquire, record, and display vehicle-side data are used in vehicle repair shops. It is used in etc. When diagnosing the vehicle, this vehicle fault diagnosis device is connected to the vehicle, a communication link is established with each vehicle-mounted electronic control device, and self-diagnosis information stored in the storage unit of the vehicle-mounted electronic control device Or by reading and displaying various control data.
[0003]
As shown in FIG. 5, such a vehicle failure diagnosis apparatus 2 connects the failure diagnosis apparatus 2 and the vehicle interior communication line 8 via the vehicle connector 4 when connecting the vehicle failure diagnosis apparatus 2 to the vehicle 1. Since it is connected by wire, workability is poor due to the limited workable range.
[0004]
In order to solve this problem, Japanese Patent Application Laid-Open No. 9-311093 divides the vehicle failure diagnosis apparatus 2 into a failure diagnosis unit 2b and an operation unit 2a as shown in FIG. A person who is configured to communicate wirelessly using the device, attaches the failure diagnosis unit 2b to the vehicle connector 4 of the vehicle 1, and performs a failure diagnosis work (for example, a repair worker; hereinafter also referred to as a failure diagnosis worker). Discloses a technique for operating the operation unit 2a.
[0005]
[Problems to be solved by the invention]
However, in the above technology, since the failure diagnosis unit 2b and the operation unit 2a are divided using wireless communication, after the vehicle failure diagnosis is completed, the failure diagnosis unit 2b is connected to the vehicle 1 and the vehicle is left as it is. There is a possibility of returning it to the owner of the vehicle (hereinafter also simply referred to as the owner).
[0006]
The present invention has been made in view of such problems of the prior art, and an object of the present invention is to provide a vehicle fault diagnosis device in which prevention of leaving in a vehicle is considered after completion of the fault diagnosis.
[0007]
[Means for Solving the Problems]
  (1) In order to achieve the above object, according to the present invention, data necessary for failure diagnosis is obtained from an electronic control device connected to a vehicle and provided in the vehicle, and the failure of the vehicle is based on the data. A failure diagnosis device for a vehicle that performs diagnosis, wherein the failure diagnosis device for a vehicle detects that the vehicle failure diagnosis device is left in the vehicle after completion of the failure diagnosis, and the failure diagnosis device for a vehicle by the leaving detection means Notification means for outputting the first notification content when it is detected that the vehicle is left in the vehicle;The abandonment detection means includes: a connection state detection unit that detects a connection state of the vehicle failure diagnosis apparatus to the vehicle; and an elapsed time detection unit that detects an elapse of a predetermined time or more from the end of the failure diagnosis. A first predetermined time after the failure detection device for the vehicle is detected to be connected to the vehicle by the connection state detection unit and the failure diagnosis is completed by the elapsed time detection unit. When the passage of the above time is detected, it is determined that the vehicle fault diagnosis device is left in the vehicle.A vehicle fault diagnosis apparatus is provided.
[0008]
  The vehicle failure diagnosis apparatus includes an abandonment detection means and a notification means, the detection detection means detects that the vehicle failure diagnosis apparatus is left in the vehicle after the failure diagnosis, and the notification means detects the detection. Based on the result, the first notification content for notifying that the vehicle failure diagnosis apparatus is left in the vehicle is output.Further, the neglect detection means includes a connection state detection unit and an elapsed time detection unit, the connection state detection unit detects that the vehicle fault diagnosis device is connected to the vehicle, and the elapsed time detection unit When it is detected that the time equal to or longer than the first predetermined time has elapsed since the completion of the failure diagnosis, the abandonment detection means determines that the vehicle failure diagnosis device is left in the vehicle.
[0009]
(2) Although not particularly limited in the above invention, data necessary for failure diagnosis is acquired from the electronic control unit, and transmission / reception means for wirelessly transmitting the data, and based on the wirelessly transmitted data, the vehicle It is more preferable to have failure diagnosis means for performing failure diagnosis.
[0010]
The vehicle failure diagnosis apparatus including the neglect detection unit and the notification unit is divided into a transmission / reception unit and a failure diagnosis unit using wireless communication, and the transmission / reception unit is connected to the vehicle. Necessary data is acquired from the electronic control unit of the vehicle, the data is transmitted to the failure diagnosis unit by wireless communication, and the failure diagnosis unit performs failure diagnosis based on the data received by wireless communication.
[0011]
  (3) In the above invention, although not particularly limited,The connection state detection unit is a transmission / reception unit connection state detection unit that detects a connection state of the transmission / reception unit to the vehicle,The abandonment detection means detects that the transmission / reception means is connected to the vehicle by the transmission / reception means connection state detection unit, and a first predetermined time after the failure diagnosis is completed by the elapsed time detection unit. It is more preferable that it is determined that the transmission / reception means is left in the vehicle when the passage of time longer than the time is detected.
[0012]
The neglect detection means includes a transmission / reception means connection state detection section and an elapsed time detection section, the transmission / reception means connection state detection section detects that the transmission / reception means is connected to the vehicle, and the elapsed time detection section fails. When it is detected that the time equal to or longer than the first predetermined time has elapsed since the diagnosis is completed, the abandonment detection unit determines that the transmission / reception unit is left in the vehicle.
[0013]
(4) In the above invention, although not particularly limited, the neglect detection unit includes a communication detection unit that detects that the failure diagnosis unit and the transmission / reception unit are in a communication state, and the communication detection unit includes: More preferably, the elapsed time detection unit starts measuring time by detecting that the failure diagnosis unit and the transmission / reception unit are not in a communication state.
[0014]
Furthermore, the neglect detection means includes a communication detection unit, and the communication detection unit detects that communication is not being performed between the failure diagnosis unit and the transmission / reception unit, so that the elapsed time detection unit starts the timing. Do.
[0015]
(5) Although not particularly limited in the above invention, it is preferable that the neglect detection means is provided in the failure diagnosis means.
[0016]
The failure diagnosing means of the vehicle failure diagnosing apparatus is provided with an abandonment detecting means, and the abandonment detecting means detects a change occurring in the failure diagnosing means, and determines whether the transmission / reception means is left in the vehicle based on the detection.
[0017]
(6) In the above invention, although not particularly limited, the transmission / reception unit can be attached to the failure diagnosis unit, and the transmission / reception unit connection state detection unit of the neglect detection unit is connected to the failure diagnosis unit of the transmission / reception unit. The transmission / reception means attachment detection unit detects the attachment of the transmission / reception means to the failure diagnosis means, so that the transmission / reception means is connected to the vehicle. It is more preferable to judge that.
[0018]
The transmission / reception unit attachment detection unit as the transmission / reception unit connection state detection unit determines that the transmission / reception unit is connected to the vehicle by detecting that the transmission / reception unit is not attached to the failure diagnosis unit.
[0019]
(7) In the above invention, although not particularly limited, the transmission / reception unit is predetermined as the corresponding failure diagnosis unit, and the neglect detection unit detects the failure of the transmission / reception unit by the transmission / reception unit attachment detection unit. A collation unit for collating whether or not the transmission / reception unit is the predetermined transmission / reception unit when attachment to a diagnosis unit is detected, and when the transmission / reception unit is attached by the verification unit, More preferably, when the predetermined transmission / reception means cannot be verified, the notification means outputs the second notification content.
[0020]
When the attachment of the transmission / reception means to the failure diagnosis means is detected by the transmission / reception means attachment detection means, the verification unit checks whether or not the corresponding failure diagnosis means is a transmission / reception means predetermined, and the verification When the transmission / reception means attached by the unit cannot collate the predetermined transmission / reception means, that is, when the regular transmission / reception means cannot be collated, the notification means outputs the second notification content.
[0021]
(8) In the above invention, although not particularly limited, it is preferable that the neglect detection means is provided in the transmission / reception means.
[0022]
An abandonment detection unit is provided in the transmission / reception unit of the vehicle failure diagnosis apparatus. The abandonment detection unit detects a change occurring in the transmission / reception unit, and determines whether the transmission / reception unit is left in the vehicle based on the detection.
[0023]
(9) In the above invention, although not particularly limited, the transmission / reception unit connection state detection unit of the abandonment detection unit is a power supply voltage detection unit that detects a voltage of power supplied from the power source of the vehicle to the transmission / reception unit. More preferably, the power supply voltage detection unit determines that the transmission / reception means is connected to the vehicle by detecting a voltage of power supplied from the power supply of the vehicle to the transmission / reception means. .
[0024]
The power supply voltage detection unit as the transmission / reception unit connection state detection unit determines that the transmission / reception unit is connected to the vehicle by detecting the voltage of the electric power supplied from the power source of the vehicle to the transmission / reception unit.
[0025]
(10) In the above invention, although not particularly limited, the failure diagnosis unit and the transmission / reception unit, when the elapsed time detection unit detects an elapse of a second predetermined time or more after the failure diagnosis is completed, More preferably, when the communication is impossible and communication between the failure diagnosis unit and the transmission / reception unit is impossible, the leaving detection unit determines that the transmission / reception unit is left in the vehicle. .
[0026]
When the elapsed time detecting unit detects that the second predetermined time or more has elapsed since the end of the failure diagnosis, the failure diagnosis means and the transmission / reception means communicate with each other, and the neglect detection is performed when the communication is impossible. The means determines that the transmission / reception means is left in the vehicle.
[0027]
(11) In the above invention, although not particularly limited, it is more preferable that the notification unit is provided in the failure diagnosis unit.
[0028]
A notification means is provided on the failure diagnosis means side to notify the failure diagnosis operator that the transmission / reception means is left in the vehicle.
[0029]
(12) In the above invention, although not particularly limited, it is more preferable that the notification unit is provided in the transmission / reception unit.
[0030]
A notification means is provided in the transmission / reception means to notify the vehicle owner of the notification of the transmission / reception means to the vehicle.
[0031]
【The invention's effect】
  According to the first aspect of the present invention, the vehicle fault diagnosis apparatus includes the abandonment detection means and the notification means, the neglect detection means detects that the vehicle fault diagnosis apparatus is left in the vehicle, and the notification means detects the vehicle. By outputting the first notification content informing that the vehicle is left unattended, it is possible to prevent the vehicle failure diagnosis apparatus from being left on the vehicle after the failure diagnosis is completed.In addition, the abandonment detection means including the connection state detection unit and the elapsed time detection unit detects that the vehicle failure diagnosis device is connected to the vehicle by the connection state detection unit, and the failure diagnosis by the elapsed time detection unit. When it is detected that the time equal to or longer than the first predetermined time has elapsed since the completion of the operation, the abandonment detection means determines that the vehicle failure diagnosis device is left in the vehicle, and thus the failure diagnosis is completed. In spite of this, it is possible to reliably detect that the vehicle fault diagnosis device is left in the vehicle.
[0032]
According to the second aspect of the present invention, the vehicle fault diagnosis apparatus including the abandonment detection means and the notification means is divided into the transmission / reception means and the fault diagnosis means using wireless communication, so that the vehicle fault diagnosis is performed. The workability of the apparatus is improved, and it is possible to prevent the transmission / reception means after the failure diagnosis from being left in the vehicle.
[0033]
According to the third aspect of the present invention, the abandonment detection means including the transmission / reception means connection state detection part and the elapsed time detection part detects that the transmission / reception means is connected to the vehicle by the transmission / reception means connection state detection part. And when the elapsed time detection unit detects that a time equal to or longer than the first predetermined time has elapsed since the failure diagnosis is completed, the abandonment detection unit determines whether the transmission / reception unit is left in the vehicle. Thus, it is possible to reliably detect that the transmission / reception means remains in the vehicle despite the completion of the failure diagnosis.
[0034]
According to the invention of claim 4, the communication detection unit provided in the neglect detection unit detects that communication is not performed between the failure diagnosis unit and the transmission / reception unit, and based on the detection, the elapsed time When the detector starts timing, it is possible to accurately detect the end of the failure diagnosis, and the elapsed time from the end of the failure diagnosis by the elapsed time detector is also accurately detected.
[0035]
According to the fifth aspect of the invention, the abandonment detection unit detects a change occurring in the failure diagnosis unit, and based on the detection, determines whether the transmission / reception unit is left in the vehicle. This makes it possible to provide an inexpensive configuration, and is effective when the size of the transmission / reception means is required.
[0036]
According to the invention described in claim 6, it is possible to determine that the transmission / reception means is connected to the vehicle by detecting that the transmission / reception means attachment detection unit is not attached to the failure diagnosis means. It becomes possible to reliably detect that the transmission / reception means remains in the vehicle despite the completion of the failure diagnosis.
[0037]
According to the seventh aspect of the present invention, when the collation unit cannot collate the transmission / reception means predetermined for the corresponding failure diagnosis unit, the notification unit outputs the second notification content, thereby When there is a vehicle failure diagnosis device, the transmission / reception means 20b can be attached to the corresponding failure diagnosis means 20a without mixing the failure diagnosis means 20a and the transmission / reception means 20b.
[0038]
According to the eighth aspect of the present invention, the failure detection means can be made inexpensive by detecting changes occurring in the transmission / reception means and determining whether the transmission / reception means is left in the vehicle based on the detection. A configuration with good workability can be achieved.
[0039]
According to the ninth aspect of the invention, the power supply voltage detector detects the voltage of the power supplied from the vehicle power supply to the transmission / reception means, and determines that the transmission / reception means is connected to the vehicle. The configuration makes it possible to reliably detect that the transmission / reception means remains connected to the vehicle.
[0040]
According to the tenth aspect of the present invention, when the elapsed time detecting unit detects the elapse of the second predetermined time or more from the end of the failure diagnosis, the failure diagnosis means and the transmission / reception means communicate, and the communication is impossible. In this case, the abandonment detection unit determines whether the transmission / reception unit is left in the vehicle, so that it is possible to detect that the vehicle is moved while the transmission / reception unit is left in the vehicle.
[0041]
According to the eleventh aspect of the present invention, it is possible to notify the failure diagnosis operator that the transmission / reception means is left in the vehicle by providing the notification means on the failure diagnosis means side.
[0042]
According to the twelfth aspect of the invention, by providing the notification means in the transmission / reception means, it is possible to notify the vehicle owner of the notification of the transmission / reception means to the vehicle owner.
[0043]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0044]
[First Embodiment]
[0045]
FIG. 1 is a block diagram of a vehicle failure diagnosis apparatus 2 according to the first embodiment of the present invention, and FIG. 2 is a block diagram for preventing the vehicle failure diagnosis apparatus 2 according to the first embodiment of the present invention from being left in the vehicle 1. It is a flowchart which shows the process for.
[0046]
As shown in FIG. 1, the vehicle fault diagnosis apparatus 2 according to the first embodiment of the present invention includes a fault diagnosis means 20a and a transmission / reception means 20b, and is used as follows. For example, the failure diagnosis operator performs an input operation on the failure diagnosis means 20a, and the failure diagnosis means 20a transmits an instruction for extracting various data necessary for the transmission unit 20b based on the input. The transmission / reception means 20b that has received the instruction extracts various necessary data from the electronic control devices 5, 6, and 7 provided in the vehicle 1, and transmits the data to the failure diagnosis means 20a. The failure diagnosis means 20a that has received the data diagnoses the vehicle 1 based on the data, displays the diagnosis result on a display (not shown), and outputs the diagnosis result to the failure diagnosis operator.
[0047]
The failure diagnosis means 20a is provided with an antenna 21a. Similarly, the transmission / reception means 20b is also provided with an antenna 21b. The failure diagnosis means 20a and the transmission / reception means 20b can perform wireless communication using these antennas 21a and 21b. It has become. Further, as shown by a dotted line portion 20b ′ in FIG. 1, in order to accommodate the transmission / reception means 20b after being detached from the vehicle 1, the transmission / reception means 20b can be attached to a part of the failure diagnosis means 20a. ing.
[0048]
In the vehicle interior of the vehicle 1, an electronic control unit 5 for an engine (hereinafter also referred to as an engine ECU 5), an electronic control 6 for an automatic transmission (hereinafter also referred to as an A / T ECU 6), and an electronic control for an antilock brake system. A vehicle interior communication line 8 is provided between each electronic control device such as a device 7 (hereinafter also referred to as ABS ECU 7) and a vehicle connector 4 for performing communication with the outside of the vehicle 1. When the transmission / reception means 20 b is connected to the connector 4, the vehicle fault diagnosis device 2 can communicate with the electronic control devices 5, 6, and 7.
[0049]
The failure diagnosis means 20a is, for example, means for performing an input operation by a failure diagnosis operator, performing a failure diagnosis of the vehicle 1 based on the acquired data, and displaying the result of the failure diagnosis, and is shown in FIG. As described above, the abandonment detection means 22 and the notification means 23 described later are included. Thus, by providing the failure diagnosis means 20a with the neglect detection means 22 and the notification means 23, the transmission / reception means can be made small and inexpensive.
[0050]
The abandonment detection means 22 is a means for detecting whether the transmission / reception means 20b is left in the vehicle 1 after the failure diagnosis of the vehicle 1 is completed. The abandonment detection means 22 further includes a transmission / reception means attachment detection unit 221 and communication detection. A unit 222 and a timer 223 are provided.
[0051]
The transmission / reception means attachment detection unit 221 of the abandonment detection means 22 is a means for detecting whether or not the transmission / reception means 20b is attached to the failure diagnosis means 20a, for example, as indicated by a dotted line portion 20b ′ in FIG. A switch is provided at a site where the transmitting / receiving unit 20b of the diagnostic unit 20a is attached, and the switch is turned on when the transmitting / receiving unit 20b is attached. Based on the detection, the connection state of the transmission / reception means 20b to the vehicle 1 is determined.
[0052]
The communication detection unit 222 of the abandonment detection unit 22 is a unit that detects whether or not a wireless communication circuit (not shown) in the failure diagnosis unit 20a is driven, and based on the detection result, the failure diagnosis unit 20a and the transmission / reception unit 20b. And whether or not wireless communication is being performed (failure diagnosis is in progress).
[0053]
The timer 223 (elapsed time detection unit) is a means for measuring the elapsed time from the end of wireless communication between the failure diagnosis means 20a and the transmission / reception means 20b, and detecting that the elapsed time has become a predetermined time or more. is there.
[0054]
The notification means 23 is a means for notifying the failure diagnosis operator when the leaving detection means 22 detects that the transmission / reception means 20b is left in the vehicle 1, for example, visual means such as blinking or lighting, Or an auditory means such as a warning sound or voice. Note that the notification unit 23 is provided in the transmission / reception unit 20b, and when the neglect detection unit 22 detects the neglect, the failure diagnosis unit 20a uses the provided wireless communication to command the transmission / reception unit 22b to operate the notification unit 23. May be transmitted to notify the owner of the vehicle 1 of being left in the vehicle 1.
[0055]
Next, the operation will be described.
[0056]
First, a case where a failure diagnosis of the vehicle 1 is performed will be described.
[0057]
When performing failure diagnosis of the vehicle 1, first, the transmission / reception means 20 b is connected to the vehicle connector 4. Thereafter, an ignition switch (not shown) of the vehicle 1 is turned on, electric power is supplied to each of the electronic control devices 5, 6, 7, etc., and a power source (not shown) of the failure diagnosis means 20a is turned on. Thereafter, by operating the failure diagnosis means 20a, communication is started, communication links are established with the electronic control devices 5, 6, 7 and the like to be diagnosed, and failure diagnosis is executed. The vehicle connector 4 includes a power terminal (not shown) directly connected to the power source of the vehicle, and power is supplied from the power terminal to the transmission / reception means 20b regardless of whether the ignition switch is on or off.
[0058]
Next, the case where the failure diagnosis is completed will be described based on the flowchart of FIG.
[0059]
When the failure diagnosis is completed, the ignition switch and the failure diagnosis means 20a of the vehicle 1 are turned off. Note that even if the power of the failure diagnosis means 20a is turned off, the means related to the following processing can be operated by an independent power supply (not shown).
[0060]
Next, in step S21 of FIG. 2, the transmission / reception means attachment detection unit 221 of the abandonment detection means 22 detects attachment of the failure diagnosis means 20a of the transmission / reception means 20b to a predetermined position. Here, when the transmission / reception means 20b is connected to the failure diagnosis means 20a and the transmission / reception means attachment detection unit 221 detects attachment of the transmission / reception means 20b to the failure diagnosis means 20a (YES in step S21), the neglect detection means 22 is Then, it is determined that the transmission / reception means 20b is not left unattended in the vehicle 1, notification to the failure diagnosis operator is not performed, and the process for preventing unattended is finished.
[0061]
When the transmission / reception means 20b corresponding to the specific failure diagnosis means 20a is determined in advance by an ID or the like, for example, the neglect detection means 22 is provided with an ID verification unit (not shown), and the above-described transmission / reception means mounting is performed. When the detection unit 221 detects the attachment of the transmission / reception means 20b to the failure diagnosis means 20a, the ID verification is performed on the attached transmission / reception means 20b, and the corresponding ID cannot be verified. The detection unit 22 instructs the notification unit 23 to output the second notification content of the content to which the transmission / reception unit 20b having no corresponding ID is attached, and the notification unit 23 displays the second notification content. It may be output. Thereby, for example, when there are a plurality of vehicle fault diagnosis devices 2, the transmission / reception means 20b can be attached to the corresponding fault diagnosis means 20a without mixing the fault diagnosis means 20a and the transmission / reception means 20b. It becomes possible.
[0062]
In step S21 of FIG. 2, the transmission / reception means 20b remains connected to the vehicle connector 4, and the transmission / reception means attachment detection unit 221 cannot detect the attachment of the transmission / reception means 20b to the failure diagnosis means 20a. (NO in step S21), the process proceeds to the next step S22. In this way, the transmission / reception means attachment detection unit 221 detects that the transmission / reception means 20b is not attached to the failure diagnosis means 20a, thereby making it possible to determine that the transmission / reception means 20b is connected to the vehicle 1. It becomes possible to reliably detect that the transmission / reception means 20b remains in the vehicle 1 despite the completion of the failure diagnosis.
[0063]
Next, in step S22, the communication detection unit 222 of the abandonment detection unit 22 detects whether or not the wireless communication circuit in the failure diagnosis unit 20a is driven. When it is determined that the communication circuit is driven, it is determined that the failure diagnosis unit 20a and the transmission / reception unit 20b are performing wireless communication (during failure diagnosis) (YES in step S22), and the detection in step S22 is performed again. Do.
[0064]
In step S22, when the communication detection unit 222 detects that the wireless communication circuit in the failure diagnosis unit 20a is not driven, the neglect detection unit 22 performs wireless communication between the failure diagnosis unit 20a and the transmission / reception unit 20b. (No in step S22), the time measurement by the timer 223 of the neglect detection means 22 is started, and the process proceeds to the next step S23. As described above, the communication detection unit 222 detects that wireless communication is not performed between the failure diagnosis unit 20a and the transmission / reception unit 20b, and the timer 223 starts measuring time based on the detection. It is possible to accurately detect the end of diagnosis, and it is also possible to accurately detect the elapsed time from the end of failure diagnosis by the timer 223.
[0065]
The determination of whether or not failure diagnosis is being performed is not limited to the above method. For example, when the power of the failure diagnosis unit 20b is ON, it is determined that the failure diagnosis is being performed and the power is OFF. It may be determined that the failure diagnosis has been completed.
[0066]
Next, in step S23, a determination is made as to whether or not the time counted by the timer 223 of the abandonment detection means 22, that is, the elapsed time since the end of communication has exceeded a first predetermined time T1 (for example, 10 seconds). If the measured time is less than the first predetermined time T1 (NO in step S23), the process returns to step S21, and the transmission / reception means attachment detection unit 221 determines whether the transmission / reception means 20b is attached to the failure diagnosis means 20a. Perform detection again.
[0067]
In step S23, when it is determined that the time counted by the timer 223 has exceeded the first predetermined time T1 (YES in step S23), the abandonment detection means 22 sends the first notification content to the notification means 23. Is output, and the process proceeds to the next step S24.
[0068]
As described above, the transmission / reception means attachment detection unit 221 cannot detect the attachment of the transmission / reception means 20b to the failure diagnosis means 20a, and the time equal to or longer than the first predetermined time T1 has elapsed since the failure diagnosis is completed. By detecting that the transmission / reception means 20b is left in the vehicle 1, it is ensured that the transmission / reception means 20b remains left in the vehicle 1 even though the failure diagnosis is completed. It becomes possible to detect.
[0069]
Next, in step S24, the notification means 23 sends the vehicle of the transmission / reception means 20b to the failure diagnosis operator of the vehicle failure diagnosis apparatus 2 based on the instruction to output the first notification content of the neglect detection means 22. The first notification content that informs the user of leaving to 1 is output, and the processing for preventing the leaving is ended.
[0070]
As described above, the vehicle failure diagnosis apparatus 2 is divided into the failure diagnosis means 20a and the transmission / reception means 20b using wireless communication, and the failure diagnosis means 20a includes the neglect detection means 22 and the notification means 23. The workability of the vehicle failure diagnosis apparatus 2 is improved, and it is possible to prevent the transmission / reception means 20b connected to the vehicle 1 at the end of the failure diagnosis from being left in the vehicle 1.
[0071]
Further, in addition to the above steps, when the timer 223 measures the elapsed time from the end of the failure diagnosis and detects that a sufficiently long second predetermined time T2 (for example, 10 minutes) has elapsed, failure diagnosis means 20a and the transmission / reception means 20b communicate with each other, and when the communication cannot be performed due to movement of the vehicle 1 or the like, the abandonment detection means 22 determines that the vehicle 1 has been returned to the owner while leaving the transmission / reception means 20b. 23 may be instructed to output the first notification content, and the notification means 23 may output the first notification content. Thereby, it is possible to detect that the vehicle has been moved while the transmission / reception means is left in the vehicle. Note that the time value of the first predetermined time T1 and the second predetermined time T2 may be the same value or larger, and can be set as appropriate, but generally the relationship of T1 <T2 is good. .
[0072]
In the first embodiment, the vehicle failure diagnosis apparatus that provides the failure detection means and the notification means to the failure diagnosis means on the operation side and notifies the failure diagnosis operator has been described in the first embodiment. A vehicle failure diagnosis apparatus will be described in which an abandonment detection unit and a notification unit are provided on the transmission / reception unit side to notify a vehicle owner.
[0073]
[Second Embodiment]
[0074]
FIG. 3 is a block diagram of the vehicle failure diagnosis apparatus 2 according to the second embodiment of the present invention, and FIG. 4 is a diagram illustrating prevention of leaving the vehicle failure diagnosis apparatus 2 in the vehicle 1 according to the second embodiment of the present invention. It is a flowchart which shows a process.
[0075]
As shown in FIG. 3, the vehicle failure diagnosis apparatus 2 according to the second embodiment of the present invention includes a failure diagnosis means 20a and a transmission / reception means 20b, and is used, for example, in the same manner as in the first embodiment. The
[0076]
Similarly to the first embodiment, the failure diagnosis means 20a is provided with an antenna 21a, and similarly, the transmission / reception means 20b is also provided with an antenna 21b. Wireless communication is possible using the antennas 21a and 21b.
[0077]
In the vehicle interior of the vehicle 1, a vehicle interior communication line 8 is provided between each electronic control device such as the engine ECU 5, A / T ECU 6, ABS ECU 7, and the vehicle connector 4 for performing communication with the outside of the vehicle 1. When the transmission / reception means 20b is connected to the vehicle connector 4, the vehicle failure diagnosis device 2 can communicate with the electronic control devices 5, 6, and 7. Similarly to the first embodiment, the vehicle connector 4 includes a power supply terminal (not shown) that is directly connected to the power supply of the vehicle 1, and the transmission / reception means 20 b is connected to the ignition switch from the power supply terminal. Power is supplied.
[0078]
As in the first embodiment, the failure diagnosis means 20a is, for example, for performing an input operation by a failure diagnosis operator, performing a failure diagnosis of the vehicle 1 based on the acquired data, and displaying the result of the failure diagnosis. Means.
[0079]
The transmission / reception unit 20b is a unit that is connected to the vehicle connector 4 and establishes a communication link with each of the electronic control devices 5, 6, and 7 in the vehicle 1 via the vehicle interior communication line 8.
[0080]
In the second embodiment, the abandonment detection unit 22 and the notification unit 23 for preventing the transmission / reception unit 20b from being left in the vehicle 1 are not included in the failure diagnosis unit 20a, but are included in the transmission / reception unit 20b. This is different from the first embodiment. Thus, by providing the transmission / reception means 20b with the abandonment detection means 22 and the notification means 23, the failure diagnosis means 20a can be made inexpensive and have good workability.
[0081]
The neglect detection means 22 provided in the transmission / reception means 20b according to the second embodiment of the present invention further includes a power supply voltage detection unit 224, a communication detection unit 222, and a timer 223.
[0082]
The power supply voltage detection unit 224 of the neglect detection means 22 is a means for detecting the voltage of power supplied from the power supply of the vehicle 1 to the transmission / reception means 20b via the vehicle interior communication line 8 and the vehicle connector 4, and is transmitted and received by the detection. A connection state of the means 20b to the vehicle 1 is determined. The determination of the connection state of the transmission / reception means 20b to the vehicle 1 is not limited to this method. For example, a switch is provided at a connection portion between the transmission / reception means 20b and the vehicle connector 4, and the connection to the vehicle connector 4 is performed by the switch. The state may be detected.
[0083]
The communication detection unit 222 of the abandonment detection unit 22 is a unit that detects whether a wireless communication circuit (not shown) in the transmission / reception unit 20b is driven. Based on the detection result, the failure diagnosis unit 20a and the transmission / reception unit 20b Determines whether or not the wireless communication is in progress (failure diagnosis is in progress).
[0084]
The timer 223 (elapsed time detection unit) is a means for measuring the elapsed time from the end of wireless communication between the failure diagnosis means 20a and the transmission / reception means 20b, and detecting that the elapsed time has become a predetermined time or more. is there.
[0085]
The notification means 23 is a means for notifying the driver when the leaving detection means 22 detects that the transmission / reception means 20b is left in the vehicle 1, for example, visual means such as blinking or lighting, or An auditory means such as a warning sound or voice. By providing the notifying means 23 in the failure diagnosing means 20a, a command that causes the failure diagnosing means 20a to operate the notifying means 23 by using the wireless communication means 20b when the neglected detecting means 22 detects that neglected. May be notified to the failure diagnosis operator that the transmitter / receiver 20b is left in the vehicle 1.
[0086]
Next, the operation will be described.
[0087]
First, a case where a failure diagnosis of the vehicle 1 is performed will be described.
[0088]
When performing failure diagnosis of the vehicle 1, the transmission / reception means 20 b is connected to the vehicle connector 4. Thereafter, an ignition switch (not shown) of the vehicle 1 is turned on, power is supplied to each of the electronic control devices 5, 6 and 7 in the vehicle 1, and a power source (not shown) of the failure diagnosis means 20a is turned on. Thereafter, by operating the failure diagnosis means 20a, communication is started, communication links are established with the electronic control devices 5, 6, 7 and the like to be diagnosed, and failure diagnosis is executed.
[0089]
Next, the case where the failure diagnosis is completed will be described based on the flowchart of FIG.
[0090]
When the failure diagnosis is completed, the ignition switch and the failure diagnosis means 20a of the vehicle 1 are turned off. Even if the ignition switch of the vehicle 1 is turned off, the means related to the following processing can be operated by an independent power source (not shown).
[0091]
Next, in step S <b> 41 of FIG. 4, the power supply voltage detection unit 224 of the neglect detection unit 22 detects the voltage of power supplied from the power supply of the vehicle 1 via the vehicle connector 4. Here, when the transmission / reception means 20b is not connected to the vehicle connector 4 of the vehicle 1 and the voltage of the electric power supplied from the vehicle 1 to the transmission / reception means 20b via the vehicle connector 4 is not detected (NO in step S41). ), The abandonment detection unit 22 determines that the transmission / reception unit 20b is not left in the vehicle 1, does not notify the owner, and ends the process for preventing the abandonment.
[0092]
In step S41, the transmission / reception means 20b is connected to the vehicle connector 4 of the vehicle 1, power is supplied from the power supply of the vehicle 1 to the transmission / reception means 20b via the vehicle connector 4, and the voltage is detected by the power supply voltage detection unit 224. If YES (YES in step S41), the process proceeds to the next step S42. In this way, the power supply voltage detection unit 224 detects the voltage of the power supplied from the power source of the vehicle 1 to the transmission / reception means 20b, and determines that the transmission / reception means 20b is connected to the vehicle 1, thereby reducing the cost. Thus, it is possible to reliably detect that the transmission / reception means 20b remains connected to the vehicle 1.
[0093]
Next, in step S42, the communication detection unit 222 of the abandonment detection unit 22 detects whether or not the wireless communication circuit in the transmission / reception unit 20b is driven. Is determined to be operating, it is determined that the failure diagnosis unit 20a and the transmission / reception unit 20b are in wireless communication (during failure diagnosis) (YES in step S42), and the detection in step S42 is performed again.
[0094]
In step S42, when the communication detection unit 222 detects that the wireless communication circuit in the transmission / reception unit 20b is not driven, the neglect detection unit 22 is performing wireless communication between the failure diagnosis unit 20a and the transmission / reception unit 20b. It is determined that there is no failure diagnosis (NO in step S42), the time measurement by the timer 223 of the neglect detection means 22 is started, and the process proceeds to the next step S43.
[0095]
Next, in step S43, a determination is made as to whether or not the time counted by the timer 223 of the abandonment detection means 22, that is, the elapsed time since the end of the wireless communication has exceeded a first predetermined time T1 (for example, 10 seconds). If the measured time is less than the first predetermined time T1 (NO in step S43), the process returns to step S41, and the power supply voltage detection unit 224 of the neglect detection means 22 is switched from the power supply of the vehicle 1 to the vehicle. The voltage of the power supplied to the transmission / reception means 20b through the connector 4 is detected again.
[0096]
If it is determined in step S43 that the time counted by the timer 223 has exceeded the first predetermined time T1 (YES in step S43), the abandonment detection means 22 sends the first notification content to the notification means 23. Is output, and the process proceeds to the next step S44.
[0097]
As described above, the power supply voltage detection unit 224 detects the voltage of the power supplied from the power supply of the vehicle 1 to the transmission / reception means 20b, and the time equal to or longer than the first predetermined time T1 has elapsed since the failure diagnosis is completed. If the transmission / reception unit 20b is left in the vehicle 1 by determining that the transmission / reception unit 20b is left in the vehicle 1, It becomes possible to detect reliably.
[0098]
Next, in step S44, the notification means 23 notifies the owner of the vehicle 1 that the transmission / reception means 20b has been left in the vehicle 1 based on an instruction to output the first notification content of the abandonment detection means 22. The first notification content is output, and the processing for preventing the neglect is completed.
[0099]
As described above, the vehicle failure diagnosis apparatus 2 is divided into the failure diagnosis means 20a and the transmission / reception means 20b using wireless communication, and the transmission / reception means 20b includes the neglect detection means 22 and the notification means 23. The workability of the vehicle fault diagnosis apparatus 2 is improved, and it is possible to prevent the transmission / reception means 20b connected to the vehicle 1 at the end of the fault diagnosis from being left in the vehicle 1.
[0100]
Further, in addition to the above steps, when the timer 223 measures the elapsed time from the end of the failure diagnosis and detects that a sufficiently long second predetermined time T2 (for example, 10 minutes) has elapsed, failure diagnosis means 20a and the transmission / reception means 20b communicate with each other, and when the communication cannot be performed due to movement of the vehicle 1 or the like, the abandonment detection means 22 determines that the vehicle 1 has been returned to the owner while leaving the transmission / reception means 20b. 23 may be instructed to output the first notification content, and the notification means 23 may output the first notification content. Thereby, it is possible to detect that the vehicle has been moved while the transmission / reception means is left in the vehicle.
[0101]
The embodiment described above is described for facilitating the understanding of the present invention, and is not described for limiting the present invention. Therefore, each element disclosed in the above embodiment is intended to include all design changes and equivalents belonging to the technical scope of the present invention.
[Brief description of the drawings]
FIG. 1 is a block diagram of a vehicle fault diagnosis apparatus according to a first embodiment of the present invention.
FIG. 2 is a flowchart showing processing for preventing the vehicle failure diagnosis apparatus according to the first embodiment of the present invention from being left in the vehicle.
FIG. 3 is a block diagram of a vehicle fault diagnosis apparatus according to a second embodiment of the present invention.
FIG. 4 is a flowchart showing a process for preventing the vehicle failure diagnosis apparatus according to the second embodiment of the present invention from being left in the vehicle.
FIG. 5 is a block diagram illustrating an example of a conventional failure diagnosis apparatus.
FIG. 6 is a block diagram showing another example of a conventional failure diagnosis apparatus.
[Explanation of symbols]
1 ... Vehicle
2 ... Vehicle failure diagnosis device
2a: Operation unit
2b ... Failure diagnosis section
3. Harness
4 ... Vehicle connector
5 ... Engine ECU
6 ... A / T ECU
7 ... ABS ECU
8 ... In-car communication line
9, 10 ... Antenna
20a ... Failure diagnosis means
20b, 20b '... transmission / reception means
21a, 21b ... antenna
22 ... Left detection means
221 ... Transmission / reception means attachment detection unit
222: Communication detector
223 ... Timer
224 ... Power supply voltage detector
23. Informing means
T1: First predetermined time
T2: Second predetermined time

Claims (12)

A vehicle fault diagnosis device that acquires data necessary for fault diagnosis from an electronic control device that is connected to a vehicle and is provided in the vehicle, and that performs fault diagnosis of the vehicle based on the data,
A leave detection means for detecting that the vehicle failure diagnosis device is left in the vehicle after the failure diagnosis is completed;
Informing means for outputting the first notice content when the leaving detection means detects that the vehicle failure diagnosis device is left in the vehicle ,
The neglect detection means includes
A connection state detection unit for detecting a connection state of the vehicle failure diagnosis device to the vehicle;
An elapsed time detector that detects the passage of a predetermined time or more from the end of failure diagnosis;
And the connection state detection unit detects that the vehicle failure diagnosis device is connected to the vehicle, and the first predetermined time after the elapsed time detection unit ends the failure diagnosis. A vehicle failure diagnosis device that determines that the vehicle failure diagnosis device is left in the vehicle when an elapse of time equal to or longer than the time is detected . Data necessary for failure diagnosis is acquired from the electronic control unit, and transmission / reception means for wirelessly transmitting the data;
The failure diagnosis device for a vehicle according to claim 1, further comprising failure diagnosis means for performing a failure diagnosis of the vehicle based on the wirelessly transmitted data. The connection state detection unit is a transmission / reception unit connection state detection unit that detects a connection state of the transmission / reception unit to the vehicle,
The abandonment detection means detects that the transmission / reception means is connected to the vehicle by the transmission / reception means connection state detection unit, and a first predetermined time after the failure diagnosis is completed by the elapsed time detection unit. The vehicle fault diagnosis apparatus according to claim 2, wherein when the passage of time longer than the time is detected, it is determined that the transmission / reception means is left in the vehicle. The neglect detection unit includes a communication detection unit that detects that the failure diagnosis unit and the transmission / reception unit are in a communication state;
The vehicle fault diagnosis apparatus according to claim 3, wherein the elapsed time detection unit starts measuring time when the communication detection unit detects that the failure diagnosis unit and the transmission / reception unit are not in a communication state. 5. The vehicle failure diagnosis apparatus according to claim 3, wherein the neglect detection unit is provided in the failure diagnosis unit. The transmission / reception means can be attached to the failure diagnosis means, and the transmission / reception means connection state detection unit of the neglect detection means is a transmission / reception means attachment detection unit that detects attachment of the transmission / reception means to the failure diagnosis means,
6. The vehicle failure according to claim 5, wherein the transmission / reception means attachment detection unit determines that the transmission / reception means is connected to the vehicle when the attachment of the transmission / reception means to the failure diagnosis means cannot be detected. Diagnostic device. The transmission / reception means is predetermined for the corresponding failure diagnosis means,
The neglect detection means checks whether the transmission / reception means is the predetermined transmission / reception means when the transmission / reception means attachment detection means detects attachment of the transmission / reception means to the failure diagnosis means. Has a verification part,
The vehicle fault diagnosis device according to claim 6, wherein when the transmission / reception unit cannot match a predetermined transmission / reception unit when attached by the verification unit, the notification unit outputs the second notification content. The vehicle fault diagnosis apparatus according to claim 3 or 4, wherein the neglect detection means is provided in the transmission / reception means. The transmission / reception unit connection state detection unit of the neglect detection unit is a power supply voltage detection unit that detects a voltage of power supplied from the power source of the vehicle to the transmission / reception unit,
The vehicle according to claim 8, wherein the power supply voltage detection unit determines that the transmission / reception unit is connected to the vehicle by detecting a voltage of power supplied from the power supply of the vehicle to the transmission / reception unit. Fault diagnosis device. The failure diagnosis means and the transmission / reception means communicate with each other when the passage of a second predetermined time or more after the failure diagnosis is completed by the elapsed time detection unit, and the failure diagnosis means and the transmission / reception means The vehicle fault diagnosis apparatus according to any one of claims 3 to 9, wherein when the communication with the vehicle is impossible, the abandonment detection unit determines that the transmission / reception unit is abandoned in the vehicle. The vehicle failure diagnosis apparatus according to claim 2, wherein the notification unit is provided in the failure diagnosis unit. The vehicle fault diagnosis apparatus according to claim 2, wherein the notification unit is provided in the transmission / reception unit.

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