DE102019208134A1 - Off-board diagnostic device, off-board diagnostic system and method for preventive maintenance - Google Patents

Abstract

Off-board diagnostic device (100) for preventive maintenance of a vehicle, the off-board diagnostic device (100) being configured to carry out the following steps: Acquisition of maintenance data (S400; S410), the maintenance data a pre-run criterion of a maintenance event; - detection of an actual criterion (S420); - determination of a pre-run criterion value (S430; S440) by comparing the pre-run criterion with the actual criterion; and generating a waiting signal (S450) if the advance criterion value is greater than a threshold value.

Description

The invention relates to an off-board diagnostic device for preventive maintenance of a vehicle.

The invention also relates to a method for carrying out preventive maintenance on a vehicle. The invention also relates to an off-board diagnostic system for preventive maintenance of a vehicle.

The term vehicle diagnosis encompasses a large number of technical processes and applications that are used, for example, for error analysis in the event of repairs, for quality assurance in statistical evaluations and in vehicle development. In addition, the vehicle diagnosis can be used to inform or warn the driver about errors that have occurred and to initiate the deactivation of vehicle properties if their function cannot be guaranteed beyond doubt.

With the mobile online service "PrM" (predictive maintenance), the customer should be called to the workshop before an event occurs (e.g. brake lining worn) in order to replace a wearing part in good time.

Tire pressure control system (TPMS) transmits the tire pressure of the respective wheel and is displayed to the driver. This tire pressure control system can also be used by each individual wheel in order to transfer further information (age of the tire).

US 2002/0069008 A1 discloses a method for limiting vehicle speed when the vehicle speed is not appropriate for the measured tire air pressure.

DE 10 2016 221 805 A1 discloses a method of assisting travel planning for a motor vehicle. When a travel plan is determined and transmitted to a vehicle, the vehicle can communicate the necessary data such as oil change, inspection and / or the need to buy a toll ticket to a user.
DE 10 2011 005 394 A1 discloses a method and a system for servicing wear parts, and in particular a technology for automatically managing the maintenance of wear parts of a vehicle, depending on an engine type and a transmission type of the vehicle and for determining a replacement interval for each wear part based on a route, driving environment and a Degree of wear and a service life of the wear part, so that a driver can be informed when the wear part is to be changed or when the vehicle is due to change the wear part.

EP 3 100 895 A2 discloses a method for informing a vehicle driver of a vehicle regarding the availability of a communication link between the vehicle and an external communication unit.

The object of the present invention is to provide an off-board diagnostic device, a method and an off-board diagnostic system for improving vehicle diagnosis.

This object is achieved by the inventive off-board diagnostic device according to claim 1, the method according to claim 9 and the off-board diagnostic system according to claim 10.

Further advantageous embodiments of the invention emerge from the subclaims and the following description of preferred exemplary embodiments of the present invention.

• - Erfassen von Wartungs-Daten, wobei die Wartungs-Daten ein Vorlaufkriterium eines Wartungs-Events umfassen;
• - Erfassen eines IST-Kriteriums;
• - Ermitteln eines Vorlaufkriteriumswerts, indem das Vorlaufkriterium mit dem IST-Kriterium verglichen wird; und
• - Erzeugen eines Vorwartungssignals, wenn der Vorlaufkriteriumswert größer als ein Schwellenwert ist.

A first aspect of the invention relates to an off-board diagnostic device for preventive maintenance of a vehicle, the off-board diagnostic device being configured to carry out the following steps:

• Acquisition of maintenance data, the maintenance data including a lead-in criterion of a maintenance event;
• - Detecting an ACTUAL criterion;
• - Determining a leading criterion value by comparing the leading criterion with the ACTUAL criterion; and
• - Generating a waiting signal if the lead criterion value is greater than a threshold value.

The off-board diagnostic device can be a tool to support troubleshooting and the subsequent repair. The off-board diagnostic device can comprise an interface for diagnostic communication so that the DTCs can be read out and deleted together with frame information. The maintenance data can be data that are required for the maintenance of a wear part of a vehicle. Maintenance data can also be used in a broader sense. B. the workshop manuals, service manuals, circuit diagrams, etc. The advance criterion can be a criterion that relates to the service life of a wear part of a vehicle. The lead criterion can, for example, be an expiration date, a minimum pressure, a minimum amount of liquid or a be the maximum stroke (travel distance) of a wearing part.

The maintenance event can be an event (service event) that requires a necessary action by the customer and / or the workshop / service partner to repair the wear part. The ACTUAL criterion can be a current situation of the wearing part, such as the current date, the current mileage of a vehicle or the current amount of fluid in the wearing part and the like. The pre-maintenance signal can be a signal that is suitable for informing the customer and / or the workshop / service partner that maintenance is required on a wearing part.

The off-board diagnostic device according to the invention is designed so advantageously that parameters such as tire age, maintenance interval, fire extinguisher, expiration date, tire sealant, expiration date coolant, expiration date brake fluid, expiration date first aid kit, battery data can also be taken into account. In addition, the inventive off-board diagnostic device has the advantage that it is possible to enter and / or enter the process data in a table after the visit to the production or workshop, which can be stored in a database / back-end system. A time of the entry and the instance / person who made the entry can also be specified in this table.

In other embodiments according to the invention, the sequence of these steps can also be different.

According to one exemplary embodiment, the maintenance event is tire maintenance, tire sealant maintenance, fire extinguisher maintenance, coolant maintenance, brake fluid, brake fluid maintenance, battery maintenance and / or first-aid kit maintenance.

According to one exemplary embodiment, the maintenance data also include a maintenance criterion, the maintenance criterion being the date of manufacture, maintenance interval and / or expiry date of a wear part. Maintenance criterion can be a criterion for determining the service life of a wearing part. For example, this can be set in relation to the date of manufacture and the expiration date.

According to one embodiment, the advance criterion is determined based on the time information. The lead time criterion can be a predetermined time that precedes the expiry time. Alternatively, the advance criterion can be determined according to pressure, quantity or stroke (travel distance).

According to one exemplary embodiment, the maintenance data also include a workshop identifier. The workshop identifier can be an identifier that indicates who carried out the last inspection on a wear part. The workshop identifier can be linked to user information such as address, e-mail address, telephone number and the like.

• - Empfangen von Servicedaten zu der vorbeugenden Wartung;
• - Überprüfung, ob eine Wartung für die vorausschauende Wartung anhand der Servicedaten durchgeführt wurde; und
• - Kontaktieren eines Benutzers basierend auf der Benutzerinformation, wenn keine Wartung für die vorausschauende Wartung durchgeführt wurde.

According to one embodiment, the off-board diagnostic device is further configured to carry out the following steps:

• - Receiving service data on preventive maintenance;
• - Check whether maintenance for predictive maintenance has been carried out using the service data; and
• - Contacting a user based on the user information when no maintenance has been performed for predictive maintenance.

According to one exemplary embodiment, the off-board diagnostic device is further configured to display the waiting signal on a display unit. The off-board diagnostic device can comprise a display unit that provides information to the customer and / or the workshop / service partner.

According to one exemplary embodiment, the off-board diagnostic device is further configured to transmit the pre-maintenance signal to a vehicle data processing system and / or a workshop data processing system. The vehicle data processing system can be a control device (ECU = electronic control unit or ECM = electronic control module). The vehicle data processing system is an electronic module to control or regulate vehicle accessories. The workshop data processing system can be a single computer in a workshop or a maintenance system in a workshop.

• - Erfassen von Wartungs-Daten, wobei die Wartungs-Daten ein Vorlaufkriterium eines Wartungs-Events umfassen;
• - Erfassen eines IST-Kriteriums;
• - Ermitteln eines Vorlaufkriteriumswerts, indem das Vorlaufkriterium mit dem IST-Kriterium verglichen wird; und
• - Erzeugen eines Vorwartungssignals, wenn der Vorlaufkriteriumswert größer als ein Schwellenwert ist.

According to a second aspect of the present invention, the method according to the invention for carrying out preventive maintenance of a vehicle comprises the following steps:

• Acquisition of maintenance data, the maintenance data including a lead-in criterion of a maintenance event;
• - Detecting an ACTUAL criterion;
• - Determining a leading criterion value by comparing the leading criterion with the actual criterion; and
• - Generating a waiting signal if the lead criterion value is greater than a threshold value.

In other embodiments according to the invention, the sequence of these steps can also be different.

• - Erhalten eines Vorwartungssignals eines Fahrzeugdatenverarbeitungssystems über die Off- Board-Diag nosevorrichtu ng;
• - Verknüpfen des Vorwartungssignals mit dem Werkstattdatenverarbeitungssystem;
• - Übermitteln des Vorwartungssignals an das Werkstattdatenverarbeitungssystem.

Bei anderen erfindungsgemäßen Ausführungen kann die Reihenfolge dieser Schritte auch anders sein.A third aspect of the invention relates to an off-board diagnostic system for preventive maintenance of a vehicle, the system comprising an off-board diagnostic device according to the first aspect of the invention, a server, a workshop data processing system and a vehicle data processing system,
where the server is configured to do the following:

• - Receiving a pre-maintenance signal from a vehicle data processing system via the off-board diagnosis device;
• - Linking the waiting signal with the workshop data processing system;
• - Transmission of the waiting signal to the workshop data processing system.

In other embodiments according to the invention, the sequence of these steps can also be different.

• 1 schematisch ein Ausführungsbeispiel einer erfindungsgemäßen Off-Board-Diagnosevorrichtung zeigt;
• 2 schematisch ein Ausführungsbeispiel eines erfindungsgemäßen Off-Board-Diagnosesystems zeigt;
• 3 Wartungs-Daten als ein Ausführungsbeispiel für die Off-Board-Diagnosevorrichtung von 1 zeigt; und
• 4 ein Flussdiagramm als ein Ausführungsbeispiel für eine vorbeugende Wartung zeigt.

Embodiments of the invention will now be described by way of example and with reference to the accompanying drawings, in which:

• 1 schematically shows an embodiment of an off-board diagnostic device according to the invention;
• 2 shows schematically an embodiment of an off-board diagnostic system according to the invention;
• 3 Maintenance data as an exemplary embodiment for the off-board diagnostic device of 1 shows; and
• 4th Figure 3 shows a flow diagram as an embodiment for preventive maintenance.

1 shows schematically an embodiment of an off-board diagnostic device according to the invention. The off-board diagnostic device 100 comprises an input unit 110 , a display unit 120 , a control unit 130 , a communication unit 140 and a storage unit 150 . The input unit 110 serves as a man-machine interface and enables a dialog between a user and the off-board diagnostic device 100 . The input unit 110 For example, it can be a keyboard, a mouse, a scanner, a digital camera, a joystick, a touch screen, an audio input device and the like. The display unit 120 is used to display images, texts or videos. The display unit 120 can for example be a liquid crystal display. The communication unit 140 serves as I / O interfaces for data communication with external devices, such as a server, a vehicle, another off-board diagnostic device, etc. For example, the off-board diagnostic device 100 via the communication unit 140 can be connected to a vehicle system of a vehicle. The storage unit 150 is a unit for storing maintenance data. A detailed explanation of the maintenance data is given in 3 shown. The control unit 130 is an electronic circuit, the control unit 130 is used to carry out preventive maintenance. A detailed explanation of preventive maintenance is in 4th shown.

2 shows schematically an embodiment of an off-board diagnostic system according to the invention. The off-board diagnostic system 200 includes an off-board diagnostic device 100-1 , an off-board diagnostic device 100-2, a server 210 , a vehicle data processing system 220 of a vehicle and a workshop data processing system 230 a workshop. The off-board diagnostic devices 100-1 and 100-2 have the same configuration as the off-board diagnostic device 100 in 1 . The components (100-1, 100-2, 210, 220, 230) of the off-board diagnostic system 200 can transmit data to another component (100-1, 100-2, 210, 220, 230) via the Internet, WLAN, Bluetooth or the like. For example, the off-board diagnostic device 100-1 can send maintenance data for a vehicle to the server 210 transfer. For example, when the off-board diagnostic device 100-1 determines that maintenance is required due to preventive maintenance, the off-board diagnostic device 100-1 sends a pre-maintenance signal to the server 210 . The server 210 contains a database in which the maintenance data refer to a workshop and a vehicle. Based on the server's database 210 can the server 210 inform a workshop that service is required. Based on the information, a service employee can inform a customer in good time. The pre-service signal can also be sent directly to the vehicle data processing system 220 be sent. Based on the waiting signal, the vehicle data processing system 220 inform the vehicle owner via a human-machine interface (HMI) that maintenance is required. The pre-maintenance signal can also be sent directly to the workshop data processing system 230 be sent. Based on the waiting signal this can Workshop data processing system 230 inform a service employee via a human-machine interface (HMI). Based on the information, the service employee can inform a customer in good time that maintenance is required.

3 FIG. 13 shows maintenance data as an embodiment for the off-board diagnostic device of FIG 1 . The maintenance data are displayed as a data table, with the data table consisting of header data and data records. The header data include maintenance event, lead-in criterion, maintenance criterion, workshop ID. A maintenance event is an event in which maintenance of a wear part has to be carried out. The wearing part can be a tire, a fire extinguisher, a coolant, a tire sealant, a brake fluid and / or a first aid kit. In these cases, the maintenance event is tire maintenance, fire extinguisher maintenance, coolant maintenance, tire sealant maintenance, brake fluid maintenance and / or first-aid kit maintenance. The maintenance criteria include date of manufacture, maintenance interval, and / or expiry date of a wear part. A lead criterion is determined based on the maintenance criteria. The advance criterion can be predefined or entered by a user. The maintenance criteria for a tire are the date of manufacture (October 15, 2013) and the tire service life (6 years). The lead time criterion for the tires is determined by adding the tire service life (6 years) to the date of manufacture (October 15, 2013) and subtracting 2 months from this. The maintenance criteria for a fire extinguisher are the date of the last maintenance (May 21, 2019) and the maintenance interval (2 years). The advance criterion for the fire extinguisher is determined by adding the maintenance interval (2 years) to the date of the last maintenance (May 21, 2019) and subtracting 2 months from it. The maintenance criteria for a coolant are the expiry date (07/11/2017). The pre-run criterion for the coolant is determined by subtracting 2 months from the expiry date (07/11/2017). The maintenance criteria for a tire sealant are the expiry date (08/02/2018). The lead time criterion for the tire sealant is determined by subtracting 2 months from the expiry date (02.08.2018). The maintenance criteria for a brake fluid are the expiry date (05/21/2019). The advance criterion for the brake fluid is determined by subtracting 2 months from the expiry date (May 21, 2019). The maintenance criteria for a first-aid kit are the expiry date (07/21/2029). The lead time criterion for the first aid kit is determined by subtracting two months from the expiry date (07/21/2029). Tire maintenance, fire extinguisher maintenance and brake fluid maintenance are stored in connection with the workshop-1, and coolant maintenance, tire sealant maintenance and first-aid kit maintenance are stored in connection with the workshop ID. Therefore, every maintenance event is linked to a workshop via the workshop ID and the off-board diagnostic device 100 can recognize which workshop is responsible for a specific maintenance event.

In this exemplary embodiment, the advance criterion is based on time criteria. However, the exemplary embodiment is not restricted to time criteria, but other criteria can also be used. For example, distance criteria, temperature criteria and / or the like can be used to determine the advance criterion. Furthermore, pressure criteria, such as e.g. Tire pressure, can be used, the pressure criteria can be transmitted via valve, sensor or antenna.

4th FIG. 11 shows a flow chart as an exemplary embodiment for preventive maintenance. In step 400 the maintenance criterion is entered. In step 400 the maintenance criterion is entered via an input unit ( 200 from 1 ) entered. If a tire is renewed in service, a service employee can use the input unit ( 110 from 1 ) Enter the date of manufacture and the service life of the tire. This input could also be provided by a workshop data processing system ( 230 from 2 ) must be entered. In step 410 a lead criterion is determined based on the entered maintenance criterion. The advance criterion can be predefined or specified by a user. For example, in the case of a predefined advance criterion, the advance criterion is determined by subtracting two months from the maintenance criterion if the maintenance criterion is a time criterion. In step 420 an ACTUAL criterion is recorded. The ACTUAL criterion can be provided by a server ( 210 from 2 ), a vehicle data processing system ( 220 from 2 ), a workshop data processing system ( 230 from 2 ) or an internal clock of an off-board diagnostic device ( 100 from 1 ) can be obtained. In step 430, a lead criterion value is determined by subtracting the lead criterion with the ACTUAL criterion. In step 440, the advance criterion value is compared with a predetermined threshold value. If the advance criterion value is greater than the predetermined threshold value, the process returns to step 430. If the advance criterion value equals the predetermined threshold, the process continues with step 450. In step 450, a waiting signal is generated. The waiting signal can be an alarm in text form and on a display unit ( 120 from 1 ) are displayed. In addition, the waiting signal can be sent to a server ( 210 from 2 ), a vehicle data processing system ( 220 from 2 ) and / or a workshop data processing system ( 230 from 2 ) be transmitted. In step 460 it is determined whether the advance criterion is updated. The update can be done on Based on service data received from a server ( 210 from 2 ), a workshop data processing system ( 230 from 2 ) or an input by a user via an input unit ( 200 from 1 ) to be provided. If the advance criterion is updated, the process continues to step 400, and if the advance criterion is not updated, the process continues to step 480. In step 480 a user is contacted. The user information can be stored in a storage unit ( 150 from 1 ) or from a server ( 200 from 2 ) can be recorded. The necessary contact information of a user can be obtained through user information stored in a storage unit ( 150 from 1 ) is previously stored. Alternatively, the contact information can be obtained from a server ( 200 from 2 ) can be obtained.

List of reference symbols

100

Off-board diagnostic device

110

Input unit

120

Display unit

130

Control unit

140

Communication unit

150

Storage unit

200

Off-board diagnostic system

210

server

220

Vehicle data processing system

230

Workshop data processing system

QUOTES INCLUDED IN THE DESCRIPTION

This list of the documents listed by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent literature cited

• US 2002/0069008 A1 [0006]
• DE 102016221805 A1 [0007]
• DE 102011005394 A1 [0007]
• EP 3100895 A2 [0008]

Claims (10)

Off-board diagnostic device (100) for preventive maintenance of a vehicle, the off-board diagnostic device (100) being configured to carry out the following steps: - Acquisition of maintenance data (S400; S410), the maintenance data including a pre-run criterion of a maintenance event; - Detecting an ACTUAL criterion (S420); - Determining a lead criterion value (S430; S440) by comparing the lead criterion with the ACTUAL criterion; and - Generating a waiting signal (S450) if the lead criterion value is greater than a threshold value. Off-board diagnostic device (100) according to Claim 1 , whereby the maintenance event is tire maintenance, tire sealant maintenance, fire extinguisher maintenance, coolant maintenance, brake fluid, brake fluid maintenance, battery maintenance and / or first-aid kit maintenance. Off-board diagnostic device (100) according to Claim 1 or Claim 2 wherein the maintenance data further comprises a maintenance criterion, the maintenance criterion being the date of manufacture, maintenance interval and / or expiry date of a wear part. Off-board diagnostic device (100) according to one of the preceding claims, wherein the advance criterion is determined based on the time information. Off-board diagnostic device (100) according to one of the preceding claims, wherein the maintenance data further comprises a workshop identifier. The off-board diagnostic device (100) according to any one of the preceding claims, wherein the off-board diagnostic device (100) is further configured to carry out the following steps: - Receiving (S460) service data relating to the preventive maintenance; - Check (S460) whether maintenance for predictive maintenance has been carried out using the service data; and - Contacting (S480) a user based on the user information when no maintenance for predictive maintenance has been performed. The off-board diagnostic device (100) according to any one of the preceding claims, wherein the off-board diagnostic device (100) is further configured to display the pre-maintenance signal on a display unit (120). Off-board diagnostic device (100) according to one of the preceding claims, wherein the off-board diagnostic device (100) is further configured to transmit the pre-maintenance signal to a vehicle data processing system (220) and / or a workshop data processing system (230). A method for performing preventive maintenance on a vehicle, the method comprising: - Acquisition of maintenance data (S400; S410), the maintenance data including a pre-run criterion of a maintenance event; - Detecting an ACTUAL criterion (S420); - Determining a lead criterion value (S430; S440) by comparing the lead criterion with the ACTUAL criterion; and - Generating a waiting signal (450) if the lead criterion value is greater than a threshold value. Off-board diagnostic system (200) for preventive maintenance of a vehicle, the system comprising the off-board diagnostic device (100) according to one of the Claims 1 to 8th , a server (210), a workshop data processing system (230) and a vehicle data processing system (220), the server (210) being configured to carry out the following steps: - Receiving a pre-maintenance signal of a vehicle data processing system (220) via the off-board diagnostic device (100); - Linking the waiting signal with the workshop data processing system (230); - Transmission of the waiting signal to the workshop data processing system (230).

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