KR19990028482U - ICM data wireless update device of vehicle - Google Patents

Abstract

The present invention relates to a device for updating ECM data of a vehicle. In particular, when the ECM data is to be updated, a vehicle is provided with a radio receiver so that new ECM data can be received and updated wirelessly. The present invention relates to an ECM data radio update apparatus of a vehicle for providing an update function.

Conventionally, as the number of vehicles increases, there is a problem in that it takes a long time to process the service for updating the ECM data, and there is a problem that the improved ECM data for the purpose of improving the quality of the vehicle cannot be applied to the previously shipped vehicle.

The present invention is provided with a wireless receiver to update the ECM data of the vehicle to receive new ECM data by the wireless receiver to update the ECM data of the vehicle, thereby providing the ECM data wireless update function to the vehicle You can do it.

Description

ICM data wireless update device of vehicle

The present invention relates to a device for updating ECM data of a vehicle. In particular, when the ECM data is to be updated, a vehicle is provided with a radio receiver so that new ECM data can be received and updated wirelessly. The present invention relates to an ECM data radio update apparatus of a vehicle for providing an update function.

In general, the engine of the vehicle is equipped with an Electronic Control Module (hereinafter referred to as 'ECM') to control the fuel system. The ECM regulates the flow of fuel through a fuel injection valve, while the air and fuel are controlled. Change the mixing ratio of the fuel, adjust the ignition timing, fuel pump and many other systems. Therefore, it is important to be clear about components and wiring diagrams to distinguish which systems are controlled by the ECM and which systems are not controlled by the ECM.

In addition, the ECM receives information from various sensors to control the system that affects the driving performance, and also performs a fault diagnosis function.In the event of a fault, the ECM notifies the driver of the fault with an "engine maintenance indicator" and stores the fault code. It is designed for easy operation by the mechanic. The ECM used in the vehicle needs to be replaced with a complete assembly for maintenance purposes, and various data for controlling the engine are embedded in the EEPROM inside the ECM. The part number is specified according to the Vehicle Identification Number (VIN).

This ECM supplies 5V or 12V power to various sensors or switches, and this is achieved through a resistance that is high enough that the lamp does not light when the test lamp is connected to the circuit. In some cases, the voltmeter usually cannot read the reading correctly because the self-resistance is too low. Therefore, a 10MΩ input high-impedance digital voltmeter is required to read the correctly indicated voltage.

The ECM is a small computer, which is connected to several sensors capable of detecting an engine operating state, so that the measured value of the sensor can be known under any circumstances. If the sensor reading is not equal to the ECM's specified setting, the ECM lights up the engine maintenance indicator to inform the operator of the fault and stores the fault code in the memory. In addition, the fault code tells you which circuit the fault occurred in the vehicle maintenance. If you want to find out the fault code from the ECM, use the ALDL (Assembly Line Diagnostic Link) connector which performs the fault diagnosis by scanner or jumper wire. The ALDL connector is a series of troubleshooting connectors mounted on top of the ECM. There are several terminals on the ALDL connector, which are mainly used to check the engine's normal operation on the production assembly line.

On the other hand, when a fault occurs in the vehicle, the engine maintenance instruction light is "lit" and the corresponding fault code is immediately stored in the ECM. If the fault is set intermittently, the engine maintenance indicator will "light off" after about 10 seconds if the fault disappears. However, the fault code stored in the ECM cannot be removed. Therefore, the fault code must be removed. To remove the fault code, disconnect the battery cable for 30 seconds or more with the ignition switch off and then reconnect it. Remove the ECM power fuse in the main fuse box for more than 30 seconds and then refit it, and press the corresponding key on the scanner to remove the fault code. There is a way.

In addition, the ECM has a “correction capability” that controls small changes in the fuel system to improve driving performance. If the fault is removed or the battery power is disconnected for repair work, the ECM will go through a process in which all the information must be newly acquired.In order to obtain this information, the ECM maintains the normal idle state through proper engine acceleration. A process is needed to allow normal operation.

In a conventional vehicle, when the driver puts the ignition switch in the ON position, the engine maintenance indicator should be turned on, but when the engine is started, the engine maintenance indicator should be turned off.If the engine maintenance indicator is not turned off, the vehicle is returned to a service center. The defective part should be repaired. At this time, the service center connects the scanner to the ALDL connector mounted on the top of the vehicle's ECM and finds and repairs the faulty part of the vehicle with the data displayed on the scanner.However, processing time is too long to update simple ECM data as the vehicle increases. It took a lot of cases. In addition, although there is a need to update the ECM data for the purpose of improving the quality of the vehicle, only the ECM data of the newly released vehicle was updated.

As described above, there is a problem in that the service process for updating the ECM data takes a lot of time as the vehicle increases, and the improved ECM data for the purpose of improving the quality of the vehicle cannot be applied to the previously shipped vehicle. There is a problem.

The present invention is to solve the problems described above, the purpose of the driver, if the driver wants to update the ECM data of the vehicle, by receiving the improved ECM data of the vehicle using a wireless receiving device, It is to provide ECM data wireless update function to a vehicle.

Features of the present invention for achieving the above object, EEPROM (17) for electrically updating and storing the ECM data for controlling the engine; A defect code storage unit 15 for storing a defect code generated corresponding to a defective portion when a defect occurs in the vehicle; In the event of a fault, the engine maintenance indicator lights up to indicate the necessity of maintenance, and in a vehicle having an ALDL connector 14 used as a terminal for operating a scanner to obtain continuous data, the vehicle receives an RF signal from a service center. An antenna 11; A demodulator 13 for demodulating the RF signal into ECM data; An RF receiver 12 for applying an RF signal received through the antenna 11 to the demodulator 13; A memory unit 18 storing a unique number corresponding to the ECM data stored in the EEPROM 17 and a vehicle identification number of the vehicle; The central control unit detects a unique number in the header area of the ECM data applied from the demodulator 13, stores the unique number in the memory unit 18, and stores the corresponding ECM data in the EEPROM 17. To include (16).

1 is a block diagram illustrating a configuration of an ECM data radio update apparatus for a vehicle according to the present invention.

2 is a flow chart of ECM data radio update operation of a vehicle according to the present invention.

Explanation of symbols on the main parts of the drawings

11 antenna 12 RF receiver

13: demodulation unit 14: ALDL connector

15: fault code storage unit 16: central control unit

17: EEPROM (Electrically Erasable Programmable Read Only Memory)

18: memory

Hereinafter, with reference to the accompanying drawings, an embodiment of the present invention in detail as follows.

As shown in FIG. 1, an ECM data radio update apparatus of a vehicle according to the present invention includes an antenna 11, an RF receiver 12, a demodulator 13, an ALDL connector 14, and a defect code storage unit 15. And a central control unit 16, an EEPROM 17, and a memory unit 18.

The antenna 11 receives the RF signal transmitted from the service center and applies it to the RF receiver 12, and the RF receiver 12 receives the RF signal received from the service center through the antenna under the control of the central controller 16. Is applied to the demodulator 13 side. The demodulator 13 demodulates an RF signal applied from the RF receiver 12 under the control of the central controller 16 and outputs the demodulated signal to the central controller 16. The ALDL connector 14 is mounted on the top of the ECM. This is a series of fault diagnosis connectors that turn on the engine maintenance indicators in the event of a fault and indicate the need for maintenance, and is used as a terminal for operating the scanner to obtain continuous data of the ECM. The defect code storage unit 15 stores a defect code generated in response to a defective portion when a defect occurs in the vehicle, and the central controller 16 stores a header area of the ECM data applied from the demodulator 13. After detecting the unique number and storing the unique number in the memory unit 18, the ECM data is stored in the EEPROM 17. The EEPROM 17 is electrically updateable, and stores ECM data for controlling the engine, and the memory unit 18 stores a unique number corresponding to the data stored in the EEPROM 17 and a vehicle identification number of the vehicle. do.

The ECM data radio update apparatus of the vehicle according to the present invention configured as described above is performed in the order shown in FIG. 2.

First, when ECM data is received from the RF receiver 12 and the demodulator 13 through the antenna 11 to the central controller 16 (step S21), the central controller 16 receives the header of the ECM data. It is determined whether the vehicle identification number is detected in the area (step S22). If the vehicle identification number is detected, the vehicle identification number previously stored in the memory unit 18 is extracted (step S23), and the detected vehicle identification number is withdrawn. It is judged whether or not it matches the vehicle identification number (step S24). If the vehicle identification number detected in step S24 does not match the vehicle identification number withdrawn, the operation is terminated. If the vehicle identification number detected is identical with the vehicle identification number withdrawn, the defect code and the unique number are displayed in the header area of the ECM data. After the detection (step S25), the detected unique number is stored in the memory unit 18 (step S26). After step S26, the central control unit 16 stores the ECM data in the EEPROM 17 (step S27), and then the defect that matches the defect code detected among the defect codes stored in the defect code storage unit 15. The code is deleted (step S28), and the operation ends. On the other hand, if the vehicle identification number is not detected in step S22, the central control unit 16 detects the unique number in the header area of the ECM data (step S29), and stores the detected unique number in the memory unit 18. (Step S30). After step S30, the central controller 16 stores the ECM data in the EEPROM 17 (step S31), and then ends the operation.

The present invention operates as described above, when the improved ECM data is developed at the service center to improve the quality of the vehicle, the previously released vehicle's ECM data is updated wirelessly with the improved ECM data, or a failure of the ECM portion of the vehicle is prevented. In case of occurrence, the service center connects the scanner to the ALDL connector 14 to recognize the defect code of the defective part of the vehicle and wirelessly update the ECM data for the corresponding defective code part. A radio transmitter for wireless transmission of the ECM data or ECM data for the defective code portion should be provided. In addition, in the case of the improved ECM data transmitted wirelessly from the service center, the header area includes the unique number, and in the case of the ECM data for the defect code portion of the vehicle, the vehicle identification number and the defect code of the vehicle are included in the header area. And a unique number.

As described above, the present invention is provided with a wireless receiving device for updating the ECM data of the vehicle to receive new ECM data by the wireless receiving device to update the ECM data of the vehicle, thereby providing ECM data wireless to the vehicle. The update function can be provided.

Claims (1)

An EEPROM 17 which can be electrically updated and stores ECM data for controlling the engine; A defect code storage unit 15 for storing a defect code generated corresponding to a defective portion when a defect occurs in the vehicle; In a vehicle equipped with an ALDL connector 14 used as a terminal for operating a scanner to obtain continuous data by lighting an engine maintenance indicator when a defect occurs, An antenna 11 for receiving the RF signal transmitted from the service center; A demodulator 13 for demodulating the RF signal into ECM data; An RF receiver 12 for applying an RF signal received through the antenna 11 to the demodulator 13; A memory unit 18 storing a unique number corresponding to the ECM data stored in the EEPROM 17 and a vehicle identification number of the vehicle; The central control unit detects a unique number in the header area of the ECM data applied from the demodulator 13, stores the unique number in the memory unit 18, and stores the corresponding ECM data in the EEPROM 17. And (16) an ECM data radio update apparatus for a vehicle.