KR102026296B1 - Wire simulation system for checking the performance of a circuit tester - Google Patents

Abstract

The present invention relates to a wire simulation system for controlling a plurality of relays to randomly simulate a connection state between wires and checking the connection state of the wires through signals inputted and outputted through the wires. According to an embodiment of the present invention, a wire simulation system comprises: a relay circuit unit including a plurality of relays and individually controlling operation states of the plurality of relays; a wire circuit unit including a plurality of first wires and a plurality of second wires connected to the plurality of first wires, respectively; a connecting portion connecting the plurality of relays and the first and second wires; and a wire test unit which outputs an output test signal to the first wire through the plurality of relays and diagnoses whether the first and second wires are defective based on an input test signal input from the second wire through the plurality of relays. The present invention can obtain test reliability of a product.

Description

WIRE SIMULATION SYSTEM FOR CHECKING THE PERFORMANCE OF A CIRCUIT TESTER}

The present invention relates to a wire simulation system for arbitrarily simulating a connection state between wires by controlling a plurality of relays and checking the connection state of a wire and the performance of a circuit inspector through signals inputted and outputted through the wires.

The automobile is equipped with a number of electric components such as a small electric motor and a sensor module, and a plurality of wires are connected to supply current to each of them and to transmit and receive control signals.

More specifically, a variety of electrical appliances such as headlights, air conditioners, transmissions, and electronic safety modules are installed in automobiles, and various electric wires are connected such that the electronic components interoperate with each other to transmit control signals and supply current for driving.

In this case, the wires are wired by a bundle of wires connected to the electrical equipment located in a short distance, and the plurality of wire bundles are grouped together by a wire harness. That is, a vehicle is equipped with various electronic devices to provide a driver's safety and various functions, and a wire harness is used to bundle a plurality of wire bundles in order to interconnect various electronic devices including the various electronic devices.

Examples of wire harnesses used in automobiles include wire harnesses connecting various fuses and lamps located at the front and rear of the vehicle body, wire harnesses connecting engines and transmissions, dashboards and instrument panels, and various electrical appliances. Wire harnesses for connecting parts.

As described above, the wire harness serves to supply electric current to the electrical equipment of the vehicle and to transmit and receive control signals between the electronic equipment, so that defect inspection of the wire harness is essential in manufacturing the wire harness.

1 is a view showing a conventional wire harness inspection system, Figure 2 is a view showing a wiring state of the back of the test plate shown in FIG.

The conventional wire harness inspection system largely includes an inspection plate 10, a circuit inspector 20, and an interface module 30.

The inspection plate 10 is provided with a plurality of holders 12, each holder 12 is electrically connected to the wire harness 13 through the connector 11 to wire the signal output from the circuit tester 20. To the harness (13). In addition, the holder 12 receives a signal passing through the wire harness 13 through the connector 11 and provides it to the circuit tester 20.

The circuit inspector 20 determines whether the wire harness 13 is defective based on the signal provided from the holder 12, and the interface module 30 displays a determination result of whether the wire harness 13 is defective.

This conventional wire harness inspection system requires a plurality of holders 12, connectors 11 and wire harnesses 13 to be provided on the test plate 10, and for the energization of the holder 12 and the wire harness 13 Each connector must be additionally equipped with a jig.

Accordingly, the structure of the front surface of the test plate 10 is very complicated as shown in FIG. 1, and the wiring state of the rear surface of the test plate 10 is also very complicated as shown in FIG. 2.

On the other hand, in the wire harness inspection system, it is important to secure the inspection reliability of the circuit inspector 20. Conventionally, the same test plate 10 as the actual product is produced, and the circuit inspector 20 is produced using the produced test plate 10. Since it is necessary to evaluate the reliability of the, there is a problem that costs a lot for the reliability verification of the circuit inspector 20.

An object of the present invention is to provide a wire simulation system capable of arbitrarily simulating a connection state between wires by controlling a plurality of relays.

In addition, an object of the present invention is to provide a wire simulation system for performing a wire inspection based on the signal input and output through the wire.

It is also an object of the present invention to provide a wire simulation system capable of diagnosing inspection reliability by itself.

The objects of the present invention are not limited to the above-mentioned objects, and other objects and advantages of the present invention, which are not mentioned above, can be understood by the following description, and more clearly by the embodiments of the present invention. Also, it will be readily appreciated that the objects and advantages of the present invention may be realized by the means and combinations thereof indicated in the claims.

Wire simulation system according to an embodiment of the present invention for achieving this object includes a plurality of relays, the relay circuit unit for controlling the operation state of the plurality of relays, a plurality of first wires and the plurality of first A wire circuit unit having a plurality of second wires respectively connected to a wire, a connection unit connecting the plurality of relays to the first and second wires, and outputting an output test signal to the first wire through the plurality of relays, And a wire inspection unit for diagnosing whether the first and second wires are defective based on an input inspection signal input from the second wire through the plurality of relays.

In an embodiment, the wire inspecting unit sets any one of the wires connected to the first and second wires as a test target wire, and diagnoses the test target wire as an open state when the input test signal is not input. It features.

In an embodiment, the wire inspecting unit sets any one of the connected first and second wires as a test target wire, and includes a second wire set as the test target wire and a non-test set wire. When the input test signal is input from two wires, the test target wire is diagnosed as a short state.

In an exemplary embodiment, the wire inspecting unit may identify the short wire based on identification information of a relay corresponding to the second wire that is not set as the inspection target wire.

In an example embodiment, the wire inspecting unit sets any one of the connected first and second wires as a test target wire, and the input test signal is not input from the second wire set as the test target wire. When the input test signal is input from the second wire that is not set as the test target wire, the test target wire is diagnosed as a connection failure.

The wire inspecting unit may identify a connection failure wire based on identification information of a relay corresponding to the second wire that is not set as the inspection target wire.

In one embodiment, the wire circuit further comprises a test module for connecting and disconnecting any two wires of the second wire, or connecting and disconnecting any one of the second wire to a fixed voltage. do.

In one embodiment, the test module includes a first test relay for connecting and disconnecting any two of the second wires, and the wire inspecting unit is input from two wires connected by the first test relay. Diagnosis of the test performance based on the test signal.

In an embodiment, the wire inspecting unit diagnoses the test performance as normal when the input test signal is input from two wires connected by the first test relay, and at least one of the two wires connected by the first test relay. When the input test signal is not input from a wire, the test performance may be diagnosed as defective.

In one embodiment, the test module includes a second test relay for connecting and disconnecting one of the second wires to the fixed voltage, and the wire inspecting unit is input from a wire connected with the second test relay. When the input test signal has the fixed voltage, the test performance is diagnosed as normal.

According to the present invention as described above by controlling a plurality of relays to arbitrarily simulate the connection state between the wires, there is an effect that can improve the expandability and compatibility of the product application.

In addition, according to the present invention by performing a wire inspection based on the signal input and output through the wire, there is an effect that can check whether the wire is defective or the cause of the failure.

In addition, the present invention has the effect of ensuring the inspection reliability of the product by diagnosing the inspection reliability by itself.

1 illustrates a conventional wire harness inspection system.
FIG. 2 is a view illustrating a wiring state of a rear surface of the test plate shown in FIG. 1.
3 illustrates a wire simulation system in accordance with an embodiment of the present invention.
4 is a view illustrating a state in which a relay circuit portion and a wire circuit portion shown in FIG. 3 are connected by a connecting portion, according to an example.
5 is a view showing a connection structure of the wire simulation system shown in FIG.
6 is a view showing a state in which the inspection target wire is open.
7 is a diagram illustrating a state in which a test target wire is in a short state.
8 is a view showing a state that the inspection target wire is poor connection.
9 illustrates a test module for diagnosing test performance.

The above objects, features, and advantages will be described in detail with reference to the accompanying drawings, whereby those skilled in the art to which the present invention pertains may easily implement the technical idea of the present invention. In describing the present invention, when it is determined that the detailed description of the known technology related to the present invention may unnecessarily obscure the gist of the present invention, the detailed description will be omitted.

Terms including ordinal numbers such as first and second may be used to describe various components, but the components are not limited by the terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as the second component, and similarly, the second component may also be referred to as the first component. The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting of the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise.

The terms used in the present invention have been selected as widely used general terms as possible in consideration of the functions in the present invention, but this may vary according to the intention or precedent of the person skilled in the art, the emergence of new technologies and the like. In addition, in certain cases, there is also a term arbitrarily selected by the applicant, in which case the meaning will be described in detail in the description of the invention. Therefore, the terms used in the present invention should be defined based on the meanings of the terms and the contents throughout the present invention, rather than the names of the simple terms.

When any part of the specification is to "include" any component, this means that it may further include other components, except to exclude other components unless otherwise stated. In addition, the terms "... unit", "module", etc. described in the specification mean a unit for processing at least one function or operation, which may be implemented in hardware or software or a combination of hardware and software. .

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, embodiments of the present invention illustrated below may be modified in many different forms, and the scope of the present invention is not limited to the embodiments described below. The embodiments of the present invention are provided to more completely explain the present invention to those skilled in the art.

Hereinafter, a wire simulation system according to an embodiment of the present invention will be described in detail with reference to FIGS. 3 to 9.

3 is a diagram illustrating a wire simulation system according to an embodiment of the present invention. 4 is a diagram illustrating a state in which a relay circuit portion and a wire circuit portion shown in FIG. 3 are connected by a connection portion, according to an example.

FIG. 5 is a diagram illustrating a connection structure of the wire simulation system shown in FIG. 3. FIG. 6 is a diagram illustrating a state in which an inspection target wire is in an open state, FIG. 7 is a diagram illustrating a state in which an inspection target wire is in a short state, and FIG. 8 is a diagram illustrating a state in which an inspection target wire is in a bad connection state. .

9 illustrates a test module for diagnosing test performance.

The present invention relates to a wire simulation system for controlling a plurality of relays to randomly simulate a connection state between wires, and to check the connection state of the wires through signals inputted and outputted through the wires.

Referring to FIG. 3, the wire simulation system 100 according to an embodiment of the present invention may include a relay circuit unit 110, a wire circuit unit 120, a connection unit 130, and a wire inspection unit 140. The wire simulation system 100 shown in FIG. 3 is according to an embodiment, and its components are not limited to the embodiment shown in FIG. 3, and some components may be added, changed, or deleted as necessary. have.

The wire described in the present invention may be any conductor that electrically connects two or more nodes, and more specifically, the conductor that connects a plurality of devices. For example, the wire may be a conductive line connecting various electronic devices provided in the vehicle for autonomous driving of the vehicle.

4 and 5, the relay circuit unit 110 may include a plurality of relays, and control operation states of the plurality of relays, respectively. In FIG. 4, the relay circuit unit 110 is illustrated as an appearance of a product, but a plurality of relays may be provided in the illustrated product.

The relay circuit unit 110 may be configured as a printed circuit board (PCB) substrate including a plurality of relays, and may further include an independent processor for controlling an operation state of each relay.

Here, the independent processor may control each relay by generating a control signal by itself, or may control each relay by using a control signal provided from the wire inspecting unit 140 to be described later.

The number of relays provided in the relay circuit unit 110 may be provided more than the number of wires. For example, as shown in FIG. 5, the relay circuit unit 110 may include n relays # 1 to #n. At this time, the number of wires to be inspected may not exceed n.

The control operation for each relay will be described later.

The wire circuit unit 120 may include a plurality of first wires 120a and a plurality of second wires 120b respectively connected to the plurality of first wires 120a.

As shown in FIG. 4, the wire circuit unit 120 may be configured as a PCB substrate including a plurality of wires (the first wire 120a and the second wire 120b) and further include a test module 121. However, the test module 121 will be described later.

Any one of the plurality of wires may be connected to and paired with another wire. In this case, the first wire 120a may refer to any one of two wires forming a pair, and the second wire 120b may refer to the other one of the two wires forming a pair.

For example, as shown in FIG. 5, wires 1 to 6 may form three pairs. More specifically, wire 1 can be paired with wire 4, wire 2 can be paired with wire 5, and wire 3 can be paired with wire 6. In this case, wires 1 to 3 may be defined as the first wire 120a, and wires 4 to 6 may be defined as the second wire 120b.

Information about the paired first and second wires 120a and 120b may be stored in advance in the wire inspecting unit 140 to be described later.

Meanwhile, in FIG. 5, for convenience of description, six wires are connected in three pairs as an example. However, the number of wires is not limited thereto. For example, when n wires are provided in the wire circuit unit 120, n wires may be provided in n / 2 pairs.

The connection unit 130 may connect the plurality of relays and the first and second wires 120a and 120b.

The connection unit 130 may connect each relay provided in the relay circuit unit 110 and each wire provided in the wire circuit unit 120 in a one-to-one manner. Accordingly, the plurality of relays and the plurality of wires may be energized through the connection unit 130.

The connection unit 130 may be configured of a plurality of flexible PCB substrates as shown in FIG. 4. Each flexible PCB board may connect one relay and one wire, or may connect a plurality of relays and a plurality of wires.

The wire inspecting unit 140 is a circuit tester for inspecting defects of a plurality of wires provided in the wire circuit unit 120, and may transmit / receive a signal for wire inspection.

More specifically, the wire inspecting unit 140 may output an output test signal to the first wire 120a through a plurality of relays. In addition, the wire inspecting unit 140 may diagnose whether the first and second wires 120a and 120b are defective based on the input test signal input from the second wire 120b through the plurality of relays.

Herein, the output test signal and the input test signal may be electrical signals having a current or voltage having a predetermined magnitude.

As described above, since the first wire 120a and the second wire 120b are connected one-to-one in a normal state, the output test signal output to the first wire 120a is input checked through the second wire 120b. It can be input as a signal.

Referring to FIG. 5, the wire inspecting unit 140 may output an output test signal to the wire 1 through the relay # 1. Since wire 1 is connected one-to-one with wire 4, the output test signal provided as wire 1 may be input to the wire test unit 140 through wire 4 and relay 4 (# 4) as input test signals. .

The operation state of each relay included in the relay circuit unit 110 may be controlled to transmit such a signal.

As described above, each relay may be controlled by a control signal provided from an independent processor included in the relay circuit unit 110 or the wire inspecting unit 140, but the wire inspecting unit 140 controls each relay. Assume it is assumed.

First, the wire inspecting unit 140 may set a pair of wires of the first and second wires 120a and 120b as the inspection target wires. When the inspection target wire is set, the wire inspection unit 140 may control the operation state of the relay corresponding to the identification information of the inspection target wire to be in an on state.

Referring to FIG. 5 as an example, the wire inspecting unit 140 may set a pair of wires 2 and 5 as inspection target wires. In this case, the wire inspecting unit 140 may control the operation states of the relays # 2 and # 5 corresponding to the identification information (numbers 2 and 5) of the inspection target wire to be in an on state.

Accordingly, the output test signal output from the wire inspecting unit 140 may be provided to the second wire through the relay # 2, and the input test signal may be provided through the wire 5 and the relay # 5. It may be input to the wire inspection unit 140.

The wire inspecting unit 140 may set the inspection target wire in a preset order and sequentially control an operation state of a relay corresponding to the inspection target wire.

For example, the wire inspecting unit 140 may output an output inspection signal to the inspection target wire according to [Table 1] below.

100 [ms] 200 [ms] 300 [ms] #One One 0 0 #2 0 One 0 # 3 0 0 One #4 One 0 0 # 5 0 One 0 # 6 0 0 One

Referring to [Table 1], the wire inspection unit 140 may output an output inspection signal to the inspection target wire every 100 [ms]. Meanwhile, the control signal applied to each of the relays # 1 to # 6 may include a closing signal 1 and an opening signal 0.

The wire inspecting unit 140 may set wires 1 and 4 as inspection target wires at 100 [ms], and provide the closing signals 1 to the relays # 1 and # 4. Accordingly, the output test signal may be output to the first wire, and the input test signal may be input to the fourth wire.

Subsequently, the wire inspecting unit 140 may set wires 2 and 5 as inspection target wires at 200 [ms], and provide the closing signals 1 to the relays 2 and 5 # 2 and # 5. have. Accordingly, the output test signal may be output through the second wire, and the input test signal may be input through the fifth wire.

Subsequently, the wire inspecting unit 140 may set wires 3 and 6 as inspection target wires at 300 [ms], and provide the closing signals 1 to the relays 3 and 6 # 3 and # 6. have. Accordingly, the output test signal may be output to the third wire, and the input test signal may be input to the sixth wire.

In the above description, the wire inspecting unit 140 sequentially diagnoses a pair of wires according to time, but the wire inspecting unit 140 may simultaneously diagnose a plurality of pairs of wires at the same time.

The wire inspecting unit 140 may diagnose whether the inspection target wire is defective based on the input inspection signal.

In one example, the wire inspecting unit 140 may diagnose the test target wire in an open state when an input test signal is not input.

Referring to FIG. 6, the wire inspecting unit 140 may set wires 1 and 4 as inspection target wires. At this time, at least one of wires 1 and 4 may be opened due to a defect in the wire.

Accordingly, the input test signal may not be input to the wire test unit through the wire 4, and the wire test unit 140 may diagnose the test target wire as an open state if the input test signal is not input for a predetermined time.

In another example, the wire inspecting unit 140 diagnoses the test target wire as a short state when an input test signal is input from the second wire 120b set as the test target wire and the second wire 120b not set as the test target wire. can do.

In this case, the wire inspecting unit 140 may control a relay to receive an input inspection signal from an adjacent wire of the inspection target wire.

In other words, the wire inspecting unit 140 may control not only a relay corresponding to the inspection target wire, but also a relay corresponding to a wire adjacent to the inspection target wire in an on state.

For example, when the wire inspecting unit 140 sets wires 2 and 5 as inspection target wires, the wire inspecting unit 140 not only relays 5 and 5 corresponding to wire 5 but also wire 5. Relays # 4 and # 6 corresponding to wires # 4 and # 6 adjacent to can also be controlled to the on state.

Referring to FIG. 7, wires 4 and 5 may be shorted due to defects of the wires, and the wire inspecting unit 140 may set wires 2 and 5 as inspection target wires.

At this time, as described above, the wire inspecting unit 140 may control the 4th and 6th relays # 4 and # 6 in the on state as well as the 5th relay # 5 corresponding to the 5th wire.

Accordingly, the input test signal according to the output test signal may be input to the wire test unit 140 through wires 4 and 5.

Since the wire test unit 140 receives an input test signal from wire 5 set as the test target wire and wire 4 not set as the test target wire, the wire test unit 140 may diagnose the test target wire in a short state.

Meanwhile, the wire inspecting unit 140 may identify the short wire based on identification information of the relay corresponding to the second wire 120b not set as the inspection target wire. Here, the short wire may mean a wire to be inspected and a short wire.

More specifically, the wire inspecting unit 140 may identify the wire providing the input inspection signal based on the identification information of the relay in which the input inspection signal is received.

In the above-described example, the wire inspecting unit 140 may receive an input inspection signal from the wire 5 set as the inspection target wire through the relay 5. In addition, the wire inspecting unit 140 may receive an input inspection signal from the wire 4 which is not set as the inspection target wire through the relay 4.

The wire inspecting unit 140 may identify the wire 4, which is not set as the inspection target wire, as the short wire based on the identification information (# 4) of the relay 4. In other words, the wire inspecting unit 140 may determine that the wire 4 is shorted with the wire 5 as the inspection target wire.

In another example, the wire inspecting unit 140 does not input an input inspection signal from the second wire 120b set as the inspection target wire, and inputs an input inspection signal from the second wire 120b not set as the inspection target wire. If so, the inspection target wire can be diagnosed as a poor connection.

In this case, the wire inspecting unit 140 may control the relay to receive the input inspection signal from all the wires except the inspection target wire. In other words, the wire inspecting unit 140 may control all relays corresponding to the second wire to the on state.

In the normal state, as shown in FIG. 5, wires 1 to 3 (first wire 120a) may be connected to wires 4 to 6 (second wire 120b), respectively. However, when the connection state of the wire is bad, as shown in FIG. 8, the connection order of the wires may be different from the normal state.

The wire inspecting unit 140 may set wires 3 and 6 as inspection targets on the assumption that the wires are connected in a normal state. At this time, as described above, the wire inspecting unit 140 may control all the relays corresponding to the second wire in the on state.

When the wire is connected differently from the normal state as shown in FIG. 8, the wire inspecting unit 140 does not input an input test signal from wire 6 as the test target wire and is not set as the test target wire. An input check signal can be input from the input. At this time, the wire inspection unit 140 may diagnose the inspection target wire as a connection failure.

Meanwhile, the wire inspecting unit 140 may identify a connection failure wire based on the identification information of the relay corresponding to the second wire 120b not set as the inspection target wire. Here, the poor connection wire may refer to a wire connected differently from a normal state.

More specifically, the wire inspecting unit 140 may identify the wire providing the input inspection signal based on the identification information of the relay in which the input inspection signal is received.

In the above-described example, the wire inspecting unit 140 may receive an input inspection signal from the wire 4 which is not set as the inspection target wire through the relay 4.

The wire inspecting unit 140 may identify the wire 4, which is not set as the inspection target wire, as a connection failure wire, based on the identification information # 4 of the relay 4. In other words, the wire inspecting unit 140 may determine that the fourth wire is poorly connected to the node to which the sixth wire is to be connected.

As described above, the present invention can improve the scalability and compatibility of the product application by arbitrarily simulating the connection state between the wires by controlling a plurality of relays. In addition, according to the present invention, by performing a wire test based on a signal input and output through the wire, it is possible to check whether the wire is defective or the cause of the failure.

Referring back to FIG. 5, the wire circuit unit 120 connects and disconnects any two wires of the second wire 120b, or a test for connecting and disconnecting any one wire of the second wire 120b to a fixed voltage. The module 121 may further include.

Accordingly, the wire inspecting unit 140 may connect any two wires of the second wire 120b and diagnose its inspection performance based on an input inspection signal input from the two wires.

In addition, the wire inspection unit 140 may diagnose its own inspection performance based on an input inspection signal input from one of the second wires 120b.

Meanwhile, information about two wires connected to and disconnected from each other among the second wires 120b and information about any one wire connected to and disconnected from the second wire 120b to a fixed voltage may be previously stored in the wire inspecting unit 140. Can be.

In an example, as illustrated in FIG. 9, the test module 121 may include a first test relay T1 connecting and disconnecting any two wires of the second wire 120b.

In this case, the wire inspecting unit 140 may diagnose inspection performance based on an input inspection signal input from two wires connected by the first test relay T1.

For example, the wire inspecting unit 140 may control the first test relay T1 to be in an on state to connect wires 4 and 5 of the second wire 120b. On the other hand, since the wire 1 and the wire 4 is composed of a pair, the wire inspection unit 140, as described in the above [Table 1], the first and fourth relay (# 1, # 4) to the on state Can be controlled. In addition, the wire inspecting unit 140 may control the relay 5 # 5 to be in an on state in order to receive an input test signal from the wire 5 connected through the wire 4 and the first test relay T1.

Subsequently, the wire inspecting unit 140 may output an output inspection signal to the fourth wire through the first relay # 1. Since the wire 4 is in a short state with the wire 5, the wire inspection unit 140 may receive an input test signal from the wire 4 through the relay 4 (# 4), and the 5 through the relay 5 # 5. The input test signal may be input from the wire.

As such, when an input test signal is input from two shorted wires (wires 4 and 5), the wire tester 140 may diagnose its test performance as normal. On the other hand, if the input test signal is not input from at least one of the two shorted wires (wires 4 and 5), the wire tester 140 may diagnose its test performance as bad.

In another example, as illustrated in FIG. 9, the test module 121 may include a second test relay T2 connecting and disconnecting a wire of any one of the second wires to a fixed voltage.

In this case, when the input test signal input from the wire connected to the second test relay T2 has a fixed voltage, the wire test unit 140 may diagnose the test performance to be normal.

For example, the wire inspecting unit 140 may control the second test relay T2 to be in an on state to connect the wire 6 to a fixed voltage (for example, to ground). Subsequently, the wire inspecting unit 140 may receive the input test signal from the wire 6 by controlling the relay # 6 in the on state.

In this case, if the input test signal has a fixed voltage, the wire test unit 140 may diagnose its test performance as normal. On the other hand, when the input test signal is not input or the input test signal has a voltage different from the fixed voltage, the wire test unit 140 may diagnose its test performance as bad.

That is, the present invention arbitrarily controls the two wires in a short state, or by controlling the input test signal input from one of the wires to a specific signal (fixed voltage), by identifying the reliability of the test through the process of identifying the product, Inspection reliability can be secured.

The present invention described above is capable of various substitutions, modifications, and changes without departing from the spirit of the present invention for those skilled in the art to which the present invention pertains. It is not limited by.

Claims (10)

A relay circuit unit including a plurality of relays, each of which controls an operation state of the plurality of relays;
A wire circuit unit including a plurality of first wires and a plurality of second wires respectively connected to the plurality of first wires;
A connection part connecting the plurality of relays to the first and second wires; And
Outputting an output test signal to the first wire through the plurality of relays, and diagnosing whether the first and second wires are defective based on an input test signal input from the second wire through the plurality of relays; Including wire inspection,
The wire circuit unit further includes a test module for connecting and disconnecting any two wires of the second wire, or connecting and disconnecting any one of the second wires to a fixed voltage,
The test module includes a first test relay for connecting and disconnecting any two of the second wires,
The wire inspecting unit diagnoses test performance based on the input test signal input from two wires connected by the first test relay.
Wire simulation system.
The method of claim 1,
The wire inspection unit
Set a pair of wires of the connected first and second wires as the inspection target wire,
And a wire simulation system for diagnosing the inspection target wire in an open state when the input inspection signal is not input.
The method of claim 1,
The wire inspection unit
Set a pair of wires of the connected first and second wires as the inspection target wire,
And when the input test signal is input from a second wire set as the test target wire and a second wire not set as the test target wire, the test target wire is diagnosed to a short state.
The method of claim 3,
The wire inspection unit
And a short wire is identified based on identification information of a relay corresponding to a second wire not set as the inspection target wire.
The method of claim 1,
The wire inspection unit
Set a pair of wires of the connected first and second wires as the inspection target wire,
When the input test signal is input from the second wire which is not set as the test target wire and the input test signal is not input from the second wire set as the test target wire, a wire simulation for diagnosing the test target wire as a defective connection. system.
The method of claim 5,
The wire inspection unit
And a wire failure system identifying a connection failure wire based on identification information of a relay corresponding to a second wire not set as the inspection target wire.
delete delete The method of claim 1,
The wire inspection unit
When the input test signal is input from two wires connected by the first test relay, the test performance is diagnosed as normal, and the input test signal is not input from at least one of two wires connected by the first test relay. If not, the wire simulation system to diagnose the inspection performance as bad.
The method of claim 1,
The test module includes a second test relay connecting and disconnecting one of the second wires to the fixed voltage,
And the wire inspecting unit diagnoses the test performance to be normal when the input test signal input from the wire connected to the second test relay has the fixed voltage.

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