KR100518310B1 - A center concentration linking structure of the car sensor and drive - Google Patents

Abstract

The present invention relates to a connection structure of in-vehicle sensors and drive devices.

The present invention provides a centralized control method of sensors and drives, which are peripheral devices in a vehicle, by using a daisy chain bus having forward and reverse connection functions. It enables not only to control and control several peripheral devices with a single control device, but also to reduce the number of wiring and components in the vehicle, and to control and sense when a bus line is disconnected or shorted due to an external shock. It provides a centralized connection structure of in-vehicle sensors and drives to ensure normal operation.

Description

A center concentration linking structure of the car sensor and drive}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connection structure of in-vehicle sensors and drives, and in particular, to connect sensors and drives in a vehicle in a daisy chain bus manner to enable centralized control of the sensors and drives. It relates to a centralized connection structure of internal sensors and drives.

As is well known, conventional in-vehicle drive motors and related sensors, such as wipers, windows, and electric seats, and peripheral devices such as acceleration sensors, passenger sensors, firing squibs, etc. of airbag systems Has a 1: 1 connection with the controller.

Accordingly, conventionally, the more parts to be controlled in a vehicle, the greater the number of control devices, and also because peripheral devices such as sensors and actuators have only one line connected to the control device, If the line is broken or shorted, it has the disadvantage of being impossible to control and sense.

Accordingly, the present invention has been made to solve the conventional problems as described above, the present invention, using a daisy chain bus having a forward and reverse connection function of the sensors and driving devices that are peripheral devices in the vehicle Centralized control of the sensors and drives, which are the peripheral devices in the vehicle, to control the driving of several peripheral devices with one controller, as well as the number of wires and components in the vehicle. The purpose of the present invention is to provide a centralized connection structure of an in-vehicle sensor and a driving device to ensure the normal operation of the control and sensing when the bus line is disconnected or short-circuited by an impact from the outside.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

FIG. 1 is a block diagram illustrating a centralized connection structure of an in-vehicle sensor and a driving device according to an embodiment of the present invention, and FIG. 2 is a block diagram showing an initialization state when a daisy chain bus is disconnected according to an embodiment of the present invention. .

1 and 2, a plurality of drive motors (M1, M2, ..., Mn) including a wiper, a window, an electric seat, an ignition device, as well as an acceleration sensor and a passenger sensor of the airbag system, etc. In a vehicle system equipped with a plurality of sensors (S1, S2, ..., Sn) including:

The driving motors M1, M2, ..., Mn and the sensors S1, S2, ..., Sn are given unique IDs, respectively, but the driving motors M1, M2, ..., Mn and the sensors S1, S2, In the ..., Sn, the bus switches MS1, MS2, ..., MSn (SS, SS2, ... SSn) and the above-described bus switches MS1, MS2 in accordance with an initialization command from the central controller 10 described later. And opening and closing control unit (C1) for opening and closing the MSn (SS, SS2, ... SSn),

The driving motors M1, M2,..., Mn and the sensors S1, S2,..., Sn are respectively controlled by the central controller 10 so that the control is performed in a centralized manner. It is characterized in that the connection configuration in the daisy-chain bus line (BL1) (BL2) having a forward and reverse connection function.

According to another aspect, in the short circuit to a specific portion of the bus lines BL1 and BL2, it is included in the driving motors M1, M2, ..., Mn and the sensors S1, S2, ..., Sn at both ends of the short circuit point. The bus switches MS1, MS2, ..., MSn (SS1, SS2, ..., SSn)

And an opening operation from the control operation of the opening / closing control unit C1 to enable the normal operation of the bus lines BL1 and BL2 through isolation of the bus lines BL1 and BL2 from the short-circuit point. do.

Referring to Figures 1 and 2 attached to the operation of an embodiment of the present invention configured as described above are as follows.

First, a plurality of drive motors (M1, M2, ..., Mn) including a wiper, a window, an electric seat, an ignition device, and the like installed in a vehicle, as well as an acceleration sensor and a passenger detection sensor of an airbag system, etc. After assigning a unique ID to each of the sensors S1, S2, ..., Sn, the drive motors M1, M2, ..., Mn and the sensors S1, S2, ..., Sn are respectively located with the central controller 10. Connect to daisy-chain bus lines BL1 and BL2.

That is, as shown in FIG. 1, the bus lines BL1 and BL2 started from the central controller 10 are connected to the first driving motor M1 or the sensor S1 of the bus line, and the first driving motor is again. A sequential connection is made from M1 and sensor S1 to the next drive motors M2, ..., Mn and sensors S2, ..., Sn.

Subsequently, bus lines BL1 and BL2 continuously connected in sequence according to the number of the driving motors M1, M2, ..., Mn and the sensors S1, S2, ..., Sn are the last driving motor Mn. And an output terminal from the sensor Sn is connected to the bus line start point of the central controller 10 again.

In this case, when the initialization command is transmitted from the central controller 10 to the driving motors M1, M2, ..., Mn and the sensors S1, S2, ..., Sn through the bus lines BL1 BL2, In accordance with the initialization command, the opening and closing control unit C1 configured in the drive motors M1, M2, ..., Mn and the sensors S1, S2, ..., Sn is made.

Accordingly, the bus switches MS1, MS2, ..., MSn (SS1, SS) configured in the driving motors M1, M2, ..., Mn and the sensors S1, S2, ..., Sn from the control of the open / close control unit C1. SS2, ..., SSn is to be able to open and close the operation.

Here, the initialization command of the central controller 10 is divided into forward or reverse initialization according to the connection order of the bus lines BL1 and BL2.

That is, the opening / closing control unit in the driving motors M1, M2, ..., Mn and the sensors S1, S2, ..., Sn received the initialization command from the central controller 10 in the forward direction (A arrow direction in FIG. 2). In response to the initialization command, C1 finishes the opening / closing switching operation of the bus switches MS1, MS2, ..., MSn (SS1, SS2, ..., SSn) and transmits to the central controller 10 whether normal initialization is completed.

Then, the central controller 10 initializes the respective driving motors M1, M2, ..., Mn and the sensors S1, S2, ..., Sn in the forward direction of the bus lines BL1 and BL2. If there is no response to the initialization command due to damage such as disconnection or short circuit of the line BL1 (BL2), all driving that is not initialized by disconnection or short circuit by performing initialization in the reverse direction (B arrow direction in FIG. 2). Initialization of the motor Mn and the sensor Sn can proceed.

At this time, when a short circuit occurs in a specific portion of the bus lines BL1 and BL2, the driving motors M1, M2, ..., Mn and the sensors S1, S2, ..., Sn at both ends of the corresponding point at the time of its initialization. By performing initialization without closing the bus switches MS1, MS2, ..., MSn (SS1, SS2, ..., SSn), the short-circuit point is isolated from the bus line BL1 (BL2) and the bus line It is possible to ensure the normal operation of the BL1 and BL2.

Therefore, when the above initialization operation is completed, the central controller 10 assigns a unique ID to each of the plurality of driving motors M1, M2, ..., Mn and the sensors S1, S2, ..., Sn. Through this, the plurality of driving motors M1, M2,..., Mn and the sensors S1, S2,..., Sn may be integrated and controlled in a centralized manner using the bus lines BL1, BL2. .

As described above, the present invention is configured to connect sensors and drivers, which are peripheral devices in a vehicle, in a centralized manner by using a daisy chain bus having forward and reverse connection functions. With centralized control, it is possible to drive and control several peripheral devices with a single control device, as well as reduce the number of wiring and components in the vehicle, and control when a bus line is disconnected or shorted due to an external shock. And it provides an effect to ensure the normal operation of the sensing.

The present invention is not limited to the above-described specific preferred embodiments, and various modifications can be made by any person having ordinary skill in the art without departing from the gist of the present invention claimed in the claims. Of course, such changes are within the scope of the claims.

1 is a block diagram showing a centralized connection structure of an in-vehicle sensor and a drive device according to an embodiment of the present invention.

2 is a block diagram illustrating an initialization state when a daisy chain bus is disconnected according to an embodiment of the present invention.

* Description of the symbols for the main parts of the drawings *

10; Central controller BL1, BL2; Bus line

M1, M2,... , Mn; Drive motors S, S2,... Sn; sensor

MS1, MS2,... , MSn, SS, SS2,... SSn; Bus switch

Claims (2)

In a vehicle system equipped with a plurality of driving motors including a wiper, a window, an electric seat, an ignition device, as well as a plurality of sensors including an acceleration sensor, a passenger sensor, and the like of an airbag system, Each of the drive motor and the sensor is given a unique ID, and the drive motor and the sensor, respectively, and the opening and closing control unit for opening and closing the bus switch according to the initialization command from the central control unit to be described later, The drive motor and the sensor are connected to the central control unit in a centralized manner, the in-vehicle sensor, which is connected to the central control unit in a daisy chain type bus line having forward and reverse connection functions. And centralized connection structure of the drive unit. The bus switch of claim 1, wherein the bus switch included in the driving motor and the sensor at both ends of the short circuit point when a short circuit is made to a specific part of the bus line, The centralized connection structure of the in-vehicle sensor and the driving device, characterized in that the opening operation from the control operation of the opening and closing control unit to enable the normal operation of the bus line through the isolation of the bus line to the short-circuit point.