LV13704B - Modular system for monitoring and recording of vehicle parameters and course of events - Google Patents

Abstract

The present invention refers to the monitoring systems for vehicles, especially to the modular vehicle monitoring systems and its diagnostics. The aim of invention is to design a modular vehicle monitoring system, from which user can get the largest total gain. Design and testing of system's modules can be done separately. It is possible to upgrade the system by adding new modules without changing existing ones. The aim of the invention is reached by designing the modular vehicle monitoring system, which comprises main electronic module that is attached to LIN and/or CAN bus connected to the bus devices, "one-wire bus" connected to the smart devices, and diagnostic/monitoring bus connected to a port for OBD bus, and/or universal inputs for directly recordable signals.

Description

MODULE VEHICLE PARAMETER AND EVENT RECORDING SYSTEM

The invention relates to the field of vehicle parameter and event recording systems, in particular to modular vehicle parameter and event recorder systems and their diagnostics.

Siemens® vehicle parameter and event recording systems such as Fleet Manager 2000 and their modifications are known. The system contains a master microcomputer, to which various sensors are attached, which record various vehicle data. However, these systems use pulse and analog / digital inputs, which limits the number and variety of sensors and devices that can be connected.

The object of the invention is to provide a modular system of vehicle parameters and event recording devices, from which the user has a greater overall benefit. It is a system modules design and testing can be done in parts. It is possible to add new modules to the system without replacing the existing ones.

The object of the invention is achieved by providing a modular system of vehicle parameters and event recording devices comprising a basic electronics module to which the LIN and / or CAN bus on which the bus equipments are connected and the "1 - wire bus" on which the bus smart devices are located. , and a diagnostic / monitoring bus with interfaces to the OBD bus and / or universal inputs for direct recording. The OBD bus provides a diagnostic / monitoring connection. If the OBD provides all the required parameters, universal inputs (PIs and UIs) of directly recordable signals are not required. The OBD bus is available in three versions: OBD-I, OBD-II and OBD-III.

In addition, the central electronics module includes a processor, memory, real-time clock and power supply. In addition, the central electronics module includes a wireless interface, an accelerometer and a memory card for data recording.

Devices such as immobilizer, USB interface, audio warning device, multifunction indicator and positioning and communication device, which include standard GPS and GPRS systems, and other accessories are separately added to the central electronics module.

In addition, a driver identification device is attached to the 1 - wire bus which identifies each driver as well as other vehicle safety related information.

Additional sensors (Smart sensors) such as load compartment temperature / humidity sensor, outdoor temperature sensor, engine temperature sensor, engine speed sensor and additional are connected to LIN and / or CAN and / or 1 - wire bus lines. vehicle speed sensor, accelerometer, fuel gauge, axle load sensor, alcohol vapor sensor or any other type of sensor.

In addition, the defined exchange protocol between the core electronics module and the vehicle electronic system is the SAE standard protocol, in particular the SAE J1850 PWM or SAE J1850 VPW protocols, and / or the ISO standard protocol, in particular ISO 9141-2, ISO 14230 or ISO 15765 CAN) .

To ensure the functioning of the system, the system is controlled by the software in the central electronics module and the software in the smart sensors.

The invention is described in more detail in the following drawing:

FIG. 1. The block diagram of a modular system of vehicle control devices is shown;

FIG. 2. Flowchart of system implementation example is shown.

FIG. 1 illustrates a block diagram of a modular vehicle control system, wherein the system comprises a master electronics module (CEM) which in turn comprises a processor, memory, real-time clock and power supply, the master electronics module (CEM) further comprising a wireless interface (WDT), an accelerometer (3DACC) and a memory card for data recording (MMC). The main electronics module (CEM) is connected to a LIN and / or CAN bus on which the bus equipment is located (DEVI EN 13704

DEVn). In addition, a 1-wire bus (1-WB) bus is attached to the main electronics module (CEM), which houses the bus smart device (iDEV1 - iDEVn) and the driver identification device (iBUT). As a next step, a diagnostic / monitoring bus is attached to the main electronics module (CEM), which has interfaces to the OBD bus (OBD- (I, II, III)) and universal direct inputs (Pl 1 - Pin; UI1 - Uln). Pl has pulse inputs but UI has analog inputs. Additionally, devices such as immobilizer (IMB), USB interface (USB), audio warning device (SP), multifunction indicator (MFI), and GPS and GPRS (GPS / GPRS) are separately added to the CEM. GPRS standard systems and other accessories (n). Additional sensors (Smart sensors) such as load compartment temperature / humidity sensor, outdoor temperature sensor, engine temperature sensor, are additionally connected to LIN and / or CAN and / or 1-wire bus (1-WB) lines, engine speed sensor and vehicle speed sensor, accelerometer, fuel gauge or any other type of sensor.

In order to better understand the system design and operation, the following is an example of a system implementation (see FIG.2). The Modular System for Vehicle Parameters and Event Logging Devices includes a Basic Electronics Module (CEM), which, in addition to the processor, memory, real-time clock and power supply, includes a wireless interface (WDT), accelerometer (3DACC), and power-dependent MMC memory card (MMC). . Connected to the main electronics module (CEM) is the LIN bus, which houses the fuel level gauge module (DEVI) and the axle load measurement module (DEV2). Connected to the main electronics module (CEM) is a 1 wire bus (1-WB) bus, which has a temperature sensor (iDEV1) and a contact sensor or switch (iDEV2) and a driver identification device (iBUT). Also attached to the main electronics module (CEM) is a diagnostic / monitoring bus with an interface to the OBD-II bus (OBD-II) and / or a speed recorder (Pil), an engine speed recorder (PI2), and sensor connection points (UI1 - UUO). Additionally, devices such as immobilizer (IMB), USB interface (USB), audio warning device (SP), multifunction indicator (MFI) and positioning and communication device (GPS / GPRS) are separately attached to the main electronics module (CEM), which includes standard GPS and GPRS systems. For example, the connection between the main electronics module (CEM) and the positioning and communication device (GPS / GPRS) is realized through the RS232 protocol.

The present invention is not limited to the example described herein. Those skilled in the art may alter and / or modify the particular embodiment of the invention without departing from the spirit and scope of the claim.

Claims (7)

1. A modular vehicle parameter and event recorder system, comprising: - Basic Electronics Module (CEM); - LIN and / or CAN bus attached to CEM on which the trunking equipment (DEVI -DEVn) is located: - a 1-wire bus (1-WB) bus attached to the CEM, which houses the bus smart devices (iDEV1 -iDEVn); - Diagnostic / monitoring trunking on which the OBD busbars (OBDs) are located and / or universal direct inputs (Pil - Pin; UI1) - Uln). The system of claim 1, characterized in that the CEM comprises a processor, memory, real-time clock and power supply, the CEM further comprising a wireless interface (WDT), an accelerometer (3DACC) and a memory card (MMC) for data. for the record. The system of claim 1, characterized in that devices such as an immobilizer (IMB), a USB interface (USB), an audio warning device (SP), a multifunction indicator (MFI) and a positioning and positioning device are separately connected to the CEM. communication device (GPS / GPRS) which includes standard GPS and GPRS systems and other accessories (n). A system according to claim 1, characterized in that a driver identification device (iBUT) is additionally connected to the "1 - wire bus" bus. The system according to claim 1, characterized in that additional sensors ("Smart" sensors) are connected to the LIN and / or CAN and / or 1-wire bus (1-WB) buses. load cell temperature / humidity sensor, outside temperature sensor, engine temperature sensor, engine speed sensor and vehicle speed sensor, accelerometer, fuel gauge, axle load sensor, alcohol vapor sensor or any other type of sensor. The system of claim 1, characterized in that the defined exchange protocol between the master electronics module (CEM) and the vehicle electronic system is the standard SAE protocol, in particular the SAE Jl 850 PWM or SAE J1850 VPW protocols, and / or the ISO standard protocol, in particular ISO 9141-2, ISO 14230 or SHORT 15765 CAN). The system according to any one of the preceding claims, characterized in that the system is controlled by software existing in CEM and software contained in smart sensors.