KR100501681B1 - Method for sensing vehicle stop and tail lamp fail using IPS - Google Patents

Abstract

The present invention relates to a method for detecting a failure of a stop and tail lamp in which a warning light of a cluster module is required in a network vehicle to which a LonWorks is applied. By installing the IPS having the same, the LN node receives the diagnostic signal (DG signal) output from the IPS, determines the lamp failure and the wire disconnection, and transmits it to the cluster module. It is possible to delete the sensor that was needed, and through this stop and tail lamp failure detection method that can solve the problem of excessive wiring work.

Description

Method for sensing vehicle stop and tail lamp fail using IPS}

The present invention relates to a stop and tail lamp failure detection method using an IPS. More specifically, by installing an IPS having a failure diagnosis function in a stop and tail lamp module, a Ron node receives a diagnostic signal outputted from the IPS. Determining lamp failures and wire breaks and transmitting them to the cluster module enables the removal of sensors that previously required complex wire connections, and stop and tail lamp failures that can solve the problem of excessive wiring. It relates to a detection method.

In general, in addition to the headlights, which are lighting devices for night driving, a plurality of safety lights are installed for safe driving.

In particular, since cars operate according to certain rules, it is essential to use safety lights to express the intention of one's own vehicle while driving to other vehicles and pedestrians. It includes a stop lamp to indicate that it is busy, and a tail lamp that informs a subsequent vehicle of the rear of the vehicle, mainly at night.

In addition, in the circuit for driving the stop lamp and the tail lamp, as shown in FIG. 3, the lamp switch 21, various relays 22, and over-current, in addition to the wires for circuit connection and power supply, are automatically applied. The fuse 23 to block the circuit is included.

Recently, LonWorks technology, which is an intelligent network system with excellent scalability and performance, is applied to the stop and tail lamp systems described above for vehicle networking.

The LoneWalk technology is one of the control or device network technologies created and proposed by Echelon, USA, which removes existing large and complex controllers and provides distributed intelligence to each node. Regardless of node's nature (sensor, actuator), it should be able to interoperate with standard protocol.

In addition, the LoneWalk technology includes a Neuron chip equipped with a Rontalk protocol, a memory for storing application programs (Flash LOM), a transceiver for transmitting generated data to a network, and an external device. Lon Nodes including Interface I / O Circuits for devices and interfaces are adopted, and each device shares communication means and communicates in a peer-to-peer manner. It is a control technology that allows each person to do their job.

Recently, a load operating system in which the above Lone Walk technology and IPS (Intelligent Power Switch) are simultaneously applied has been developed.

The IPS is a semiconductor chip that replaces a fuse, a relay, and the like, and protects a system by automatically blocking a circuit in case of overcurrent.

Therefore, in the load operating system to which the IPS is applied, the fuse and the relay, which occupy a large volume in the existing system configuration, can be eliminated while being replaced by a small semiconductor chip.

Moreover, when Lonwalk's network technology and IPS are simultaneously applied to the load operating system, the wiring route can be simplified to increase space utilization, reduce weight, and reduce costs.

On the other hand, since the stop lamp and tail lamp as described above is mounted on the rear of the vehicle body, the normal operation cannot be easily understood from the driver's seat. Therefore, in a normal vehicle, a warning device that detects a failure of the stop lamp and tail lamp and informs the driver Is composed.

In the conventional warning device for notifying the driver of the driver's seat whether the stop and tail lamps 24 are broken as described above, as shown in FIG. 3, separate stop and tail lamps for detecting lamp failure and wire breakage. One sensor 25a, 25b is provided for each of the right and left sides so that a warning lamp in the cluster module 26 lights up when lamp abnormality and wire breakage are detected through the stop and tail lamp sensors 25a, 25b. It is.

However, according to the use of the sensor for detecting lamp abnormalities and wire breaks as described above, there is a problem of complicated wire connection and excessive wiring work, which is very disadvantageous in terms of weight, cost, and space utilization of the lamp module. do.

Therefore, there is an urgent need for a countermeasure that can solve the problem of complicated wire connection and excessive wiring work according to the sensor installation.

Therefore, the present invention has been invented to solve the above problems, by installing an IPS having a failure diagnosis function in the stop and tail lamp module, the Ron node receives the diagnostic signal output from the IPS, lamp failure and wire By determining the disconnection and transmitting it to the cluster module, it is possible to delete the sensor that required the existing complicated wire connection, thereby providing a stop and tail lamp failure detection method that can solve the problem of excessive wiring work. There is this.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

The present invention relates to a method for detecting a failure of a stop and tail lamps in which a warning light of a cluster module is required in a network vehicle to which a loan walk is applied.

The stop node for the stop and tail lamp included in the ronwalk uses diagnostic signals inputted from the IPS installed between the stop lamp and the tail lamp to determine whether the lamp is abnormal and disconnected from the wire, and then transmits to the cluster module. It is characterized by one.

In particular, the process of determining the lamp failure and wire disconnection at the ron node includes a) receiving a diagnostic signal corresponding to the state of the lamp from each IPS, and b) a current diagnosis signal is generated at a predetermined interval. Determining whether the diagnosis signal is the same as the diagnosis signal; and c) if the current diagnosis signal differs from the previous diagnosis signal in step b), whether the corresponding lamp switch is in an on state and the current diagnosis signal is a lamp error or wire. Determining whether the signal corresponds to disconnection; and d) determining that the signal is abnormal and the wire is disconnected when all of the conditions of step c) are satisfied.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

The present invention employs IPS (Intelligent Power Switch) 13a, 13b instead of deleting the sensor from the stop and tail lamp modules of a vehicle networked using LonWorks, and the stop and tail lamps 11, 12. The neuron chip 15 of the LON node 14 for control receives a diagnostic signal (DG signal) output from the IPSs 13a and 13b and breaks the lamps 11 and 12. The stop and tail lamp failure detection method to determine whether or not.

That is, in order to detect lamp failures and wire breaks in which the warning lamps 19a and 19b of the cluster module 17 are required to be turned on, the detection method of the present invention eliminates the existing sensor requiring complicated wire connection. Instead, by installing the IPS (13a, 13b) that can be applied to replace the fuse and the relay so that the ron node 14 receives the diagnostic signal output from the IPS (13a, 13b) to determine the lamp failure and wire disconnection.

Conventional IPS has a terminal (hereinafter referred to as a diagnostic signal output terminal) DG for outputting a diagnostic signal so that an external controller can monitor the load side condition.

When the diagnostic signal output terminal DG has a problem in driving a load connected to the power output terminal OUT or a wire break occurs, an abnormality in power output through the power output terminal OUT occurs. It is provided to output a signal, that is, a diagnostic signal.

For example, in the present invention, when the stop lamp 11 or the tail lamp 12 is burned out and is not driven (lamp fail) or when the power is not output from the power output terminal OUT due to a wire break, the IPS 13a. 13b) outputs the corresponding information through the diagnostic signal output terminal DG.

In order to describe the failure detection method of the present invention using the IPS in more detail, illustrated in Figure 1 attached to the failure detection circuit of the stop and tail lamp employing the IPS.

As shown in the drawing, a stop lamp 11 and a tail lamp 12 corresponding to a load are connected to the power output terminals OUT of the IPSs 13a and 13b for outputting battery power, respectively, and output a diagnostic signal. The diagnostic signal output terminals DG of the respective IPSs 13a and 13b are connected to the neuron chip 15 of the ron node 14 for controlling the stop and tail lamps 11 and 12.

On the other hand, the neuron chip 15 determines whether there is a lamp failure or wire disconnection from the diagnostic signals received from the IPS 13a and 13b through an internal program that is executed in cooperation with the memory (Flash LOM) 16. .

In this case, when the neuron chip 15 determines the lamp abnormality and wire disconnection, the electrical signal is transmitted to the controller 18 of the cluster module 17 through the communication line. When the electric signal corresponding to the lamp failure and wire disconnection is received from the ron node 14, the warning lamps 19a and 19b indicating the failure of the lamp are turned on.

Hereinafter, the neuron chip of the ron node will be described with respect to each step with reference to FIG. 2 attached to the process of determining whether the lamp is abnormal or the wire is disconnected by receiving the IPS diagnostic signal.

First, the neuron chip 15 of the ron node 14 is a diagnostic signal (DG signal) corresponding to the state of the stop and tail lamps 11 and 12 from the diagnostic signal output terminals DG of the respective IPSs 13a and 13b. Will continue to be input.

On the other hand, the neuron chip 15 of the ron node 14 checks the diagnostic signals output from the IPSs 13a and 13b at regular intervals, and compares the current diagnostic signal with the diagnostic signal of the previous cycle. It is determined whether or not the same.

Here, when the current diagnosis signal is different from the diagnosis signal of the previous cycle, it is determined whether the corresponding lamp switch is on and whether the current diagnosis signal corresponds to a lamp failure and a wire break.

If the above conditions are satisfied at the same time, that is, the current diagnostic signal input from the IPS 13a, 13b in the ON state of the corresponding lamp switch is a signal corresponding to a lamp failure and wire break, The neuron chip 15 determines that the current state is abnormal of the corresponding lamp and wire disconnection, and transmits it to the controller 18 of the cluster module 17.

Of course, the controller 18 of the cluster module 17 turns on the warning lamps 19a and 19b of the corresponding lamp when a signal indicating that the lamp is abnormal and the wire is disconnected from the neuron chip 15 of the ron node 14 is received. do.

In this way, the stop and tail lamp failure detection method according to the present invention is installed in the stop and tail lamp module of the networked vehicle using a loan walk IPS that can be applied to replace the fuse and relay, so that the loan node from the IPS It is to receive the output diagnostic signal to determine the lamp failure and wire disconnection, and to transmit a signal indicating that the lamp failure and wire disconnection to the cluster module.

According to the fault detection method of the present invention, by applying the IPS, the sensor that requires the existing complicated wire connection can be deleted, and the problem that the problem of the complicated wire connection and the excessive wiring work according to the sensor installation is solved eventually. Will be.

As described above, according to the stop and tail lamp failure detection method according to the present invention, by installing the IPS having a failure diagnosis function in the stop and tail lamp module, the Ron node receives the diagnostic signal output from the IPS lamp By determining the abnormality and wire break and transmitting to the cluster module, it is possible to delete the sensor that requires the existing complicated wire connection, and to solve the problem of complicated wire connection and excessive wiring work according to the sensor installation. There is.

In addition, by using the diagnostic function of the IPS that can replace the fuse and relay for the detection of the failure of the stop and tail lamp, the fuse and the relay in addition to the sensor can be eliminated.

1 is a circuit diagram for detecting a stop and tail lamp failure according to the present invention,

2 is a flowchart illustrating a process of determining whether a lamp abnormality and wire break are received by receiving an IPS diagnosis signal.

3 is a circuit diagram illustrating a driving circuit of a conventional stop and tail lamp.

<Explanation of symbols for the main parts of the drawings>

11: stop lamp 12: tail lamp

13a, 13b: IPS 14: Lone Node

15: neuron chip 16: memory

17: cluster module 18: controller

19a, 19b: warning light

Claims (2)

delete In the network vehicle to which the loanwork is applied, a method for detecting the failure of the stop and tail lamps in which a warning light of the cluster module is required is performed. In the stop and tail lamp failure detection method using the IPS to determine whether the lamp abnormality and wire disconnection by using the diagnostic signals received from the IPS installed between each and transmits to the cluster module, Determining whether there is a lamp abnormality or wire disconnection at the ron node includes a) receiving a diagnostic signal corresponding to a state of a lamp from each IPS, and b) presenting a diagnosis signal of a previous cycle for a predetermined period. And c) if the current diagnosis signal is different from the previous diagnosis signal in step b), whether the corresponding lamp switch is in the on state and the current diagnosis signal is connected to the lamp error and wire break. Determining whether the corresponding signal is applied, and d) if the condition of step c) is satisfied, it is determined that the abnormality of the lamp and the wire disconnection characterized in that the stop and tail lamp failure detection method using IPS .