JP2000324042A - In-vehicle telephone diagnostic device - Google Patents

Abstract

(57) [Summary] [Problem] To perform self-diagnosis of a call function of a vehicle-mounted telephone. An apparatus for performing self-diagnosis of an in-vehicle telephone connected to an in-vehicle equipment via an in-vehicle telephone adapter unit. Diagnosis is based on whether or not a busy signal can be received. As a result, the self-diagnosis of the call function of the vehicle-mounted telephone can be easily performed without incurring a call charge, and the vehicle can be witnessed without noticing that the emergency call system for the vehicle is disabled due to the failure of the vehicle-mounted telephone. Operation can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a self-diagnosis device for a vehicle telephone.

[0002]

2. Description of the Related Art In-vehicle telephones are usually connected to a central control unit with a monitor such as a navigation device or a TV device via a telephone adapter unit, and perform dial operation, on-hook operation, and off-hook operation using a monitor touch switch. Or adjusting the volume. These in-vehicle systems are equipped with a self-diagnosis function for failures, and perform self-diagnosis of whether communication between the telephone and the adapter unit and between the adapter unit and the central control unit can be performed normally. .

[0003]

However, in a conventional diagnostic system for an in-vehicle system including an in-vehicle telephone, communication between the in-vehicle devices is diagnosed, and whether or not the communication between the in-vehicle telephone and the base station can be normally performed is determined. However, there is a problem that it is not possible to confirm whether or not the emergency communication system using, for example, an in-vehicle telephone is always usable.

It is an object of the present invention to self-diagnose the call function of a vehicle telephone.

[0005]

The present invention will be described with reference to FIG. 1 showing the configuration of one embodiment. (1) The invention according to claim 1 is directed to an in-vehicle device via an in-vehicle telephone adapter unit 2. This is a device for performing self-diagnosis of the in-vehicle telephone 1 connected to the in-vehicle telephones 3 and 4. The in-vehicle telephone 1 makes a call to its own station, and diagnoses whether or not a busy signal from the in-vehicle telephone 1 can be received. (2) The invention according to claim 2 is an apparatus for performing a self-diagnosis of the vehicle-mounted telephone 1 connected to the vehicle-mounted devices 3 and 4 via the vehicle-mounted telephone adapter unit 2, and after transmitting the signal by the vehicle-mounted telephone 1. The communication is terminated, and diagnosis is performed based on whether or not a reason display value signal can be received from the vehicle-mounted telephone 1 after the end of the call. (3) The invention according to claim 3 is an apparatus for performing a self-diagnosis of the vehicle-mounted telephone 1 connected to the vehicle-mounted devices 3 and 4 via the vehicle-mounted telephone adapter unit 2. An outgoing call is made and a diagnosis is made based on whether or not a confirmation signal for a non-telephone service request from the vehicle-mounted telephone 1 is received. (4) The diagnostic device for an in-vehicle telephone according to claim 4 includes the emergency notification device 4 in the in-vehicle device.

In the section of the means for solving the above-described problem, a diagram of one embodiment is used for easy understanding of the description, but the present invention is not limited to this embodiment. .

[0007]

(1) According to the first aspect of the present invention, a call is transmitted to the own station by the vehicle-mounted telephone, and the diagnosis is made based on whether or not a busy signal can be received from the vehicle-mounted telephone. Self-diagnosis of the call function of the vehicle-mounted telephone can be easily performed without calling, and it is possible to prevent the vehicle from operating without noticing that the vehicle's emergency call system is disabled due to the failure of the vehicle-mounted telephone . (2) According to the invention of claim 2, the call is terminated after the call is made by the vehicle-mounted telephone, and the diagnosis is made based on whether or not the reason display value signal can be received from the vehicle-mounted telephone after the call is completed. In addition to the effect of item 1, the present invention can be applied to the case where data communication is performed via the vehicle-mounted telephone. If the diagnosis result is normal, it can be determined that the data communication function of the vehicle-mounted telephone is normal. (3) According to the third aspect of the invention, the non-telephone service request is transmitted by the on-vehicle telephone, and the diagnosis is made based on whether or not the confirmation signal for the non-telephone service request is received from the on-vehicle telephone. Self-diagnosis of the data communication function of the telephone can be performed. (4) According to the invention of claim 4, it is possible to prevent the vehicle from operating without noticing that the emergency notification system for the vehicle has become unusable due to the failure of the vehicle-mounted telephone.

[0008]

FIG. 1 is a diagram showing the configuration of an embodiment. A telephone 1 such as a mobile telephone radio or a mobile telephone is connected to the vehicle telephone adapter unit 2. The adapter unit 2 is a microcomputer 2
a, a hands-free circuit 2b, and the like, and executes a diagnostic program to be described later to perform self-diagnosis of the telephone call function of the telephone 1.

[0009] The adapter unit 2 for the vehicle-mounted telephone includes:
A central control unit 3 such as an in-vehicle navigation device (not shown) or an in-vehicle audio device (not shown) is connected to an emergency call system controller 4. The central control unit 3 includes a display 3a and operation switches 3b. The emergency call system controller 4 includes a microcomputer 4a, and receives an operation signal from an occupant protection device 5 such as an airbag or a seat belt with a pretensioner, or activates a load service button or an emergency illness button of the operation switch 6 by the occupant. When operated, information such as the current location obtained from the GPS receiver 7 is notified to the base station via the telephone 1 on behalf of the occupant. The adapter unit 2 is also connected to a microphone 8 and a speaker 9 for hands-free communication.

In this embodiment, the connection between the portable telephone and a downstream device such as a telephone adapter unit, the connection terminal specifications, the uplink serial signal and the downlink serial signal format are issued by a communication carrier. Digital cellular phone common specifications.

FIG. 2 is a flowchart showing a diagnostic program. The operation of the embodiment will be described with reference to this flowchart. Adapter unit 2 for vehicle phone
Executes this diagnostic program when an ignition key switch (not shown) of the vehicle is turned on. In step 1, it is checked whether the telephone 1 is connected to the telephone adapter unit 2. In this connection confirmation, the downstream serial signals such as out-of-service / in-service area and electric field strength (signal level) transmitted from the telephone 1 are monitored, and when these signals are received, it is determined that the telephone 1 is connected. When a down serial signal such as out-of-service / in-service area or electric field strength cannot be received, the telephone number of the own station is inquired to the telephone 1. If the telephone number of the own station can be received from the telephone 1, the telephone 1
Is determined to be connected.

When the telephone 1 is not connected, the process proceeds to step 2 where a warning is displayed on the display 3a and a warning broadcast is made on the speaker 9. On the other hand, when the connection of the telephone 1 has been confirmed, the process proceeds to step 3, where the terminal 1 is within the communication range with the base station by the downlink serial signal from the telephone 1,
In addition, it is checked whether the electric field strength is equal to or more than a predetermined value, that is, whether or not it is possible to communicate with the base station. If a call is possible, the process proceeds to step 4, where an off-hook (call start) and an upstream serial signal such as a dial number of the own station are sent to the telephone 1, and transmitted to the own station.

In step 5, it is confirmed whether or not the telephone 1 has transmitted a busy downstream serial signal. Since the transmission from the own station to the own station via the base station, if the communication between the telephone 1 and the base station is normally performed, the telephone 1
Should be sending a busy serial signal. If the busy serial signal cannot be received, the process proceeds to step 6, where it is determined that the communication function of the telephone 1 is in a state where the communication function is not possible due to some failure, and a warning is displayed on the display 3a in step 7 and the speaker 9 is displayed. Broadcast a warning.

On the other hand, if a busy serial signal can be received in response to the transmission to the own station, the process proceeds to step 8, it is determined that the telephone function of the telephone 1 is normal, and on-hook to the telephone 1 in step 9. To terminate the call.

In step 10, a self-diagnosis other than the telephone call function by the telephone 1 is performed. For this diagnosis, whether the communication between the adapter unit 2 and the central control unit 3 and between the adapter unit 2 and the controller 4 for the emergency notification system can be performed normally, focusing on the controller 4 for the emergency notification system. Diagnosis of whether the emergency call system works properly is included.
If there is an abnormality in the diagnosis result in step 11, the process proceeds to step 12, and a warning is issued by the display 3a and the speaker 9. If there is no abnormality in the diagnosis result, the process proceeds to step 13, and the display 3a and the speaker 9 use the call function of the telephone 1 and the like. That all functions are normal.

As described above, a call is transmitted to the own station via the vehicle-mounted telephone, and if a busy signal is received from the vehicle-mounted telephone, it is determined that the communication function of the vehicle-mounted telephone is normal, and the busy signal cannot be received. Then, it is determined that there is an abnormality in the call function of the vehicle-mounted telephone, so that the self-diagnosis of the call function of the vehicle-mounted telephone can be easily performed without incurring a call charge, and an emergency call for the vehicle due to a failure of the vehicle-mounted telephone. It is possible to prevent the vehicle from operating without noticing that the system has become unusable.

<< Modification of One Embodiment of the Invention >> In the above-described embodiment, an example has been described in which the call function is diagnosed based on whether or not a busy signal can be received from the telephone set in response to a call from the local station. A description will be given of a modification in which the communication function is diagnosed based on whether or not a reason display value signal can be received from the telephone set. The configuration of this modified example is the same as the configuration shown in FIG. 1, and illustration and description are omitted.

FIG. 3 is a flowchart showing a diagnostic program according to a modification. The operation of the modification will be described with reference to this flowchart. Adapter unit 2 for vehicle phone
Executes this diagnostic program when an ignition key switch (not shown) of the vehicle is turned on. Step 21
As described above, it is confirmed whether or not the telephone 1 is connected to the telephone adapter unit 2.
If the telephone 1 is not connected, proceed to step 22;
A warning is issued by the display 3a and the speaker 9. On the other hand, when the connection of the telephone 1 is confirmed, the process proceeds to step 23, and it is determined whether or not the mobile terminal is within the communication range with the base station by the downlink serial signal from the telephone 1 and the electric field strength is equal to or more than a predetermined value.
That is, it is determined whether or not it is possible to communicate with the base station.

When the telephone 1 is connected to the adapter unit 2 and is in a state capable of communicating with the base station, the process proceeds to step 24, where the telephone 1 is sent off-hook and an uplink serial signal such as a dial number of the own station or a preset station. Send and make a normal call. In step 25 after making a normal call,
An off-hook up serial signal is sent to the telephone 1, and the call is terminated unilaterally. In addition, even when transmitting to other stations,
Since it takes some time for the partner station to answer the call, if the call is immediately terminated during the call after the call is made, no call charge is charged.

Normally, if communication between the telephone and the base station can be normally performed, a down-serial signal (CC or RT) indicating the reason for disconnecting the line is sent from the telephone when the call is terminated. Therefore, if the downlink serial signal of the reason display value can be received from the telephone 1 at the end of the call, the telephone function of the telephone 1 can be determined to be normal, and if the downlink serial signal of the reason display value cannot be received, the telephone function of the telephone 1 can be determined. Can be determined to have some abnormality. In step 26, it is confirmed whether or not the downlink serial signal of the reason display value can be received. If the signal cannot be received, the process proceeds to step 27, where it is determined that there is some abnormality in the telephone function of the telephone 1 and the telephone cannot be communicated.
In step 28, a warning is issued by the display 3a and the speaker 9.

On the other hand, when the telephone call is forcibly terminated after calling the own station or another station, if a down serial signal of the reason display value can be received from the telephone 1, the process proceeds to step 29.
Is determined to be normal. In step 30, self-diagnosis other than the telephone call function by the telephone 1 is performed as described above. If there is an abnormality in the diagnosis result in step 31, the process proceeds to step 32, where the display 3a and the speaker 9
Is issued, and if there is no abnormality in the diagnosis result, the process proceeds to step 33, where the display 3a and the speaker 9 notify that the call function and other functions of the telephone 1 are all normal.

As described above, when a call is forcibly terminated immediately after calling the own station or another station, a diagnosis of the call function is performed based on whether or not a signal of a reason display value can be received from the vehicle-mounted telephone after the call is terminated. As a result, the self-diagnosis of the call function of the vehicle-mounted telephone can be easily performed without incurring a call charge, and without being aware that the emergency communication system for the vehicle has become unavailable due to the failure of the vehicle-mounted telephone. The operation of the vehicle can be prevented. Further, the method of diagnosing the call function of this modified example can be applied to the case where data communication is performed via the vehicle-mounted telephone. If the diagnosis result is normal, it can be determined that the data communication function of the vehicle-mounted telephone is normal.

<< Another Modification of One Embodiment of the Invention >> Another modification for self-diagnosing a data communication function when data communication is performed via a vehicle-mounted telephone will be described. The configuration of this modified example is the same as the configuration shown in FIG. 1, and illustration and description are omitted.

FIG. 4 is a flowchart showing a diagnostic program according to a modification. The operation of the modification will be described with reference to this flowchart. Adapter unit 2 for vehicle phone
Executes this diagnostic program when an ignition key switch (not shown) of the vehicle is turned on. Step 41
As described above, it is determined whether or not the telephone 1 is connected to the telephone adapter unit 2.
If the telephone 1 is not connected, proceed to step 42,
A warning is issued by the display 3a and the speaker 9. On the other hand, when the connection of the telephone set 1 is confirmed, the process proceeds to step 43, and it is determined whether or not the mobile phone is within the communication range with the base station by the downlink serial signal from the telephone set 1 and the electric field strength is equal to or more than a predetermined value.
That is, it is determined whether or not it is possible to communicate with the base station.

When the telephone 1 is connected to the adapter unit 2 and is in a state capable of talking with the base station, the process proceeds to step 44, where the telephone 1 is off-hook, a dial number of a data communication destination, a non-telephone service (data communication) request, etc. And sends it to the data communication destination.

In the case of performing data communication with another station, if communication between the telephone and the base station can be normally performed, an uplink serial signal of a non-telephone service request is sent to the telephone, and the non-telephone service request is transmitted from the telephone. A confirmation serial signal is sent. In step 45 after the call, the reception of the downlink serial signal for non-telephone service request confirmation is confirmed. If the reception is not successful, the process proceeds to step 46, and the telephone 1 is in a communication disabled state due to some abnormality in the data communication function. Thus, a warning is issued by the display 3a and the speaker 9 in step 47.

On the other hand, if a downlink serial signal for confirming the non-telephone service request can be received from the telephone 1, the process proceeds to step 49, where an on-hook uplink serial signal is sent to the telephone 1 to terminate the communication.

In step 50, self-diagnosis other than the data communication function by the telephone 1 is performed as described above. If there is an abnormality in the diagnosis result in step 51, the process proceeds to step 52, and a warning is issued by the display 3a and the speaker 9, and if there is no abnormality in the diagnosis result, the process proceeds to step 53, and the data communication function of the telephone 1 is performed by the display 3a and the speaker 9. Signal that all other functions are normal.

As described above, since the diagnosis of the data communication function is performed based on the reception of the downlink serial signal for confirming the non-telephone service request, the self-diagnosis of the data communication function of the vehicle-mounted telephone can be easily performed.

[Brief description of the drawings]

FIG. 1 is a diagram showing a configuration of an embodiment.

FIG. 2 is a flowchart showing a diagnostic program according to one embodiment.

FIG. 3 is a flowchart illustrating a diagnostic program according to a modified example.

FIG. 4 is a flowchart illustrating a diagnostic program according to another modification.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Telephone 2 Telephone adapter unit 2a Microcomputer 2b Hands-free circuit 3 Central control unit 3a Display 3b Operation switch 4 Emergency call system controller 4a Microcomputer 5 Occupant protection device 6 Operation switch 7 GPS receiver 8 Microphone 9 Speaker

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 5K027 AA16 BB04 EE04 EE11 FF04 FF22 FF25 HH21 KK03 LL02 LL05 MM17 5K042 AA06 BA05 CA02 DA32 EA01 FA11 HA05 JA01 JA06 JA09 5K067 AA26 AA33 BB03 DD13LL EE DD LL DD

Claims (4)

[Claims] An apparatus for performing self-diagnosis of an in-vehicle telephone connected to an in-vehicle device via an in-vehicle telephone adapter unit, wherein the in-vehicle telephone transmits a call to a local station, and the in-vehicle telephone is busy. A diagnostic device for an in-vehicle telephone, which performs a diagnosis based on whether a signal can be received. 2. An apparatus for performing self-diagnosis of an in-vehicle telephone connected to an in-vehicle device via an in-vehicle telephone adapter unit, comprising: terminating a call after making a call with the in-vehicle telephone;
A diagnostic device for an in-vehicle telephone, wherein the diagnosis is performed based on whether or not a reason display value signal is received from the in-vehicle telephone after the end of the call. 3. An apparatus for performing self-diagnosis of an in-vehicle telephone connected to an in-vehicle device via an in-vehicle telephone adapter unit, wherein the in-vehicle telephone transmits a non-telephone service request, and the in-vehicle telephone transmits a non-telephone service request. A diagnostic device for an in-vehicle telephone, wherein the diagnosis is performed based on whether or not a confirmation signal for a telephone service request can be received. 4. The diagnostic device for a vehicle-mounted telephone according to claim 1, wherein said vehicle-mounted device includes an emergency notification device.