JP2005206095A - Pre-operation inspection device for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pre-operation inspection device for a vehicle capable of diagnosing failure of load regardless any kinds of the load before starting of an engine and informing the diagnosis result from the inside of the vehicle. <P>SOLUTION: When the vehicle is made to ignition mode or accessory mode by turning/operating a key member inserted into a key insertion port of the vehicle, the pre-operation inspection device for the vehicle is provided with a pre-operational trial electricity feed means for temporarily trially feeding electricity to the load installed on the vehicle; a diagnosis means for diagnosing whether or not failure exists in the electricity feed wire or the load based on the electricity feeding by the pre-operational trial electricity feed means; and informing means for informing the diagnosis result by the diagnosis means from the inside of the vehicle. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to the field of an apparatus for diagnosing a load (on-vehicle electrical component) failure before a vehicle is operated (before an engine is started).

  Vehicles (so-called automobiles) are equipped with various loads. These loads fail due to deterioration or the like with use. For this reason, it is necessary to diagnose whether each load has failed.

The diagnosis of these load failures is preferably performed before the operation (before the engine is started). Here, as an apparatus for detecting a load failure in the pre-operation inspection, there is a device related to a vehicle lamp remote lighting system (see Patent Document 1).
JP-A-11-303471

  However, the pre-operation inspection apparatus described in Patent Document 1 facilitates confirmation of lighting of various lamps in the pre-operation inspection by wirelessly lighting the lamps of the vehicle. That is, there is a problem that the load target that can be inspected before the operation (confirmation of a load failure) is limited to those that can visually recognize the operating state, specifically, lamps.

  In addition, the lamp needs to be lit for a sufficient time necessary for the rider (especially the driver) to visually recognize, and there is a problem that the amount of power consumption is large.

  Furthermore, in order for the passenger to confirm whether or not there is a load failure, the passenger has to bother to go out of the vehicle and visually check the vehicle. In other words, when there is rain or the like and the weather condition is bad, or when it is difficult to see the lighting condition in the daytime, there is a problem that it can be confirmed only from the outside of the vehicle.

  The present invention has been devised to solve the above problems (problems and problems), and the present invention can prevent a failure of the load before starting the engine regardless of the type of load. An object of the present invention is to provide a vehicle pre-operation inspection device capable of making a diagnosis and reporting a diagnosis result from within the vehicle.

(Claim 1)
In order to achieve this object, in the vehicle pre-operation inspection device according to claim 1, the key member inserted into the key insertion port of the vehicle is rotated and operated in the ignition (IG) mode or the accessory (ACC ) Mode, the pre-operational trial power supply means for temporarily supplying power to the load installed in the vehicle, and the load fails based on the power supply by the pre-operational trial power supply means. Diagnosis means for diagnosing whether or not the vehicle has been informed, and notification means for notifying the result of diagnosis by the diagnosis means from within the vehicle.
Since it is configured in this way, when the key member inserted into the key insertion port of the vehicle is turned to operate in the ignition mode or the accessory mode, the pre-operational trial power supply means In addition, power is temporarily supplied to the load installed in the vehicle, and the diagnosis means diagnoses whether or not the load is broken based on the power supply by the trial power supply means before operation, and the notification means The diagnosis result by the diagnosis means is notified from within the vehicle.
(Claim 2)
The vehicle pre-operation inspection device according to claim 2 is the vehicle pre-operation inspection device according to claim 1, wherein the pre-operation trial power supply means supplies power from the battery device to the load (battery device and load). Switching means for electrically connecting power supply lines (power supply lines, wiring) for electrical connection; and current detection means for detecting a current flowing through the power supply line in a state connected by the switching means. The diagnosis means diagnoses the load failure based on the magnitude of the detection value of the current detection means, and the notification means displays or outputs the diagnosis result of the diagnosis means. To do.
Thus, according to the vehicle pre-operation inspection device according to claim 2, the power line is operated by the switching means in the same manner as the vehicle pre-operation inspection device according to claim 1. When temporarily connected, the current detection unit detects the value of the current flowing through the feeder line. Here, the diagnosis unit diagnoses whether or not the load is broken based on the magnitude of the detection value of the current detection unit. More specifically, the magnitude of the detected value is compared with the magnitude of the current value in the normal state, and when the magnitude of the difference is larger than a predetermined value, or the detected value is smaller than a predetermined threshold or When it becomes large, it is diagnosed as a failure.
(Claim 3)
The vehicle pre-operation inspection device according to claim 3 is the vehicle pre-operation inspection device according to claim 1, wherein the pre-operation trial power supply means electrically temporarily supplies a power supply line for supplying power from the battery device to the load. A switching means to be connected; and a voltage detection means for detecting a voltage at a predetermined position of the feeder line in a state connected by the switching means. The failure of the load is diagnosed based on the magnitude of the detected value, and the notification means displays or outputs the diagnosis result of the diagnosis means.
Thus, according to the vehicle pre-operation inspection apparatus according to claim 3, the power line is operated by the switching means in the same manner as the vehicle pre-operation inspection apparatus according to claim 1. When temporarily connected, the voltage detection means detects the voltage value at a predetermined position of the feeder line. Here, the diagnosis unit diagnoses whether or not the load has failed based on the magnitude of the detection value of the voltage detection unit. More specifically, the magnitude of the detected value is compared with the magnitude of the voltage value in the normal state, and when the magnitude of the difference becomes larger than a predetermined value, or the detected value is smaller than a predetermined threshold value or When it becomes large, it is diagnosed as a failure.
(Claim 4)
The vehicle pre-operation inspection device according to claim 4 is the vehicle pre-operation inspection device according to any one of claims 1 to 3, wherein the notification means displays a diagnosis result on a monitor device of the navigation system. .
According to this configuration, the vehicle pre-operation inspection device according to claim 4 operates in the same manner as the vehicle pre-operation inspection device according to any one of claims 1 to 3, and is informed. By the means, the diagnosis result is displayed on the monitor device of the navigation system.

(Claim 1)
According to the vehicle pre-operation inspection device according to claim 1, before starting the engine, it is possible to diagnose a failure of the load regardless of the type of the load, and to confirm whether or not there is a failure in the vehicle. There is an effect that can be done. In addition, since power is temporarily supplied, there is an effect that the power consumption required for diagnosis can be reduced.
(Claim 2)
According to the vehicle pre-operation inspection device according to claim 2, in addition to the effect exhibited by the vehicle pre-operation inspection device according to claim 1, the power supply line or the wiring in the load is further disconnected or short-circuited (short-circuited). There is an effect that it can be detected whether or not.
(Claim 3)
According to the vehicle pre-operation inspection device according to claim 3, in addition to the effect of the vehicle pre-operation inspection device according to claim 1, whether the vehicle is in an overvoltage state or a low voltage state applied to the load. There is an effect that can be detected.
(Claim 4)
According to the vehicle pre-operation inspection device according to claim 4, in addition to the effect of the vehicle pre-operation inspection device according to any one of claims 1 to 3, a display unit is additionally provided near the dashboard. There is an effect that the detailed information on the state of the load can be notified.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. Of course, since the following examples are only preferred examples of the present invention, the technical scope of the present invention is not limited to the following examples.

  FIG. 1 is a block diagram of a vehicle short position detection apparatus 100 according to an embodiment of the present invention (a vehicle is not shown). As shown in FIG. 1, the vehicle short position detection device 100 includes an intelligent power switch device (hereinafter referred to as “IPS”) 110 and an electric control system (hereinafter referred to as “ECS” for convenience). And a display device 130 for navigation.

  The IPS 110 is disposed between a battery device 510, which is a type of DC power supply device, and a power supply line 530 for electrically connecting a load (on-vehicle electrical component) 520, and a current detection sensor 111, a voltage A detection sensor 112 and a semiconductor switching element 113 are provided (see the dashed line in the figure. Only the detailed configuration of one IPS 110 is shown, and the other IPS 110 and 110 are omitted). Power supply from the battery device 510 to the load 520 is performed via a power supply line 530, and the power supply line 530 is divided into a common power supply line 531 and a branch power supply line 532 with the fuse box 540 as a boundary. . A load 520 is connected to each branch power supply line 532, and the IPS 110 is a branch power supply line 532 of the power supply line 530, and is provided on the upstream side (power supply side) of the load 520. Note that the load 520 connected to the branch power supply line 532 is not limited to one type (for example, lamps), and the type and standard (rated current, etc.) may be different for each load 520.

  The current detection sensor 111 is for detecting the value of the current flowing through the feeder line 530, that is, a type of current detection means. On the other hand, the voltage detection sensor 112 is for detecting a voltage value at a predetermined position of each branch power supply line 530a, and is a kind of voltage detection means. Here, the voltage detection sensor 112 preferably detects the voltage value of the branch power supply line 530a in the vicinity of the location where the current detection sensor 111 is disposed. With this configuration, the resistance value can be obtained together with the detection value of the current detection sensor 112. If the resistance value can be obtained, the short position can be derived based on this resistance value (of course, the resistance value of the entire power supply line where the abnormality occurred (the power supply path from the location where the voltage detection sensor is installed to the load)) , Information on resistivity, etc. is also necessary.), Wiring and parts replacement, repair work time can be greatly shortened.

  The semiconductor switching element 113 is a kind of switching means, and is for switching the power supply line 530 into a connected (on) state or a cut-off (off) state by appropriately performing an on operation and an off operation. Thus, the current flowing through the feeder line 530 is controlled. Specifically, the rated current corresponding to each load 520 is supplied, the current is set to “0” (that is, cut off), and PWM control ( It is also possible to control the effective value by appropriately repeating ON / OFF.

  As described above, since the IPS 110 is equipped with both the current detection sensor 111 or the voltage detection sensor 112 as a detection means and the semiconductor switching element 113 as a switching means, it is detected for each branch feeder 532. The means and the switching means need not be provided, the assembling work can be simplified, and the component cost and the assembling cost can be reduced.

  Here, when the key member inserted into the key insertion port of the vehicle is turned in the ignition mode (IG) by being operated to rotate, in all the IPSs 110 arranged in the branch feeder line 531 The semiconductor switching element 113 is temporarily turned on (for a short time: more specifically, several μs (microsec)). Thereby, each load 520 can be experimentally operated before the engine is started, that is, before the operation. Note that the ON operation (trial power supply processing) of the semiconductor switching element 113 may be performed in the accessory mode, not in the ignition mode.

  The ECS 120 detects whether there is a failure in each load 520 and the branch feeder 532 based on the detection value of the current detection sensor 111, that is, current value information, or the detection value of the voltage detection sensor 112, that is, voltage value information. belongs to.

  The ECS 120 includes an A / D converter 121 that performs A / D (digital) conversion on the detection value of the current detection sensor 111 and the detection value of the voltage detection sensor 112, and the normal time for each power supply line 530 when the load 520 is normal. Current value information, normal voltage value information, and other information (data) in memory 122 and current value information A / D converted by the A / D converter 121 (hereinafter, “current current value information” as appropriate) ) Or voltage value information (hereinafter referred to as “current voltage value information” as appropriate) and normal current value information or normal voltage value information stored in the memory 122. A CPU 123 for diagnosing the presence / absence of a failure 532 and a D / A converter 124 for D / A (analog) conversion of the calculation result of the CPU 123 are provided (see the chain line portion in the figure). Needless to say, the current current value information is information indicating a value currently detected by the current detection sensor 111, and the current voltage value information is information indicating a value currently detected by the voltage detection sensor 112. .

  Here, the diagnosis of whether or not the load 520 and the branch power supply line 532 are broken by the CPU 123 is performed by comparing the magnitude of the current current value information with the magnitude of the normal current value information. If the magnitude of the current value information is larger than the magnitude of the normal current value information (short-circuit determination current threshold value) and an overcurrent state, either the load 520 has failed or one of the branch feeders 532 is short-circuited. If the magnitude of the current value information is smaller than the magnitude of the normal current value information (disconnection determination current threshold value) and the current is low, the load 520 has failed or has branched. It means that any of the feeder lines 532 is disconnected. As described above, the current value information at normal time is configured by a short circuit determination current threshold value and a disconnection determination current threshold value ((short circuit determination current threshold value> disconnection determination current threshold value), and the current current. It is normal if the value information is included in both threshold values, and further, by providing an abnormality detecting means in the load 520 (the adopted load 520 itself may or may not be included later) It is also possible to quickly determine whether there is an abnormality in the load 520 or an abnormality in the power supply line 530.

  Thus, since the diagnosis of the presence or absence of a failure of the load 520 or the like is diagnosed by comparing the current value information and the normal current value information, it is not necessary for the passenger to bother to visually recognize the operating state of the load 520. (Some loads 520 can only be seen from outside the vehicle, and some cannot be seen unless the bonnet, trunk, etc. are opened.) It is not necessary to supply power only, and the power consumption required for diagnosis can be reduced.

  On the other hand, normal voltage value information (consisting of overvoltage determination threshold information and undervoltage determination threshold information) is stored in the memory 122 in advance, and the magnitude of the normal voltage value information and the voltage detection sensor 112 By comparing the detected value (the magnitude of the current voltage value information), it is possible to diagnose whether the load 520 is operating in a normal state (in other words, the operating state of the load 520). This is because, in the case of an overvoltage state (overvoltage determination threshold information <current voltage value information. “<” Means no sign. The same applies hereinafter), it causes a failure of the load 520 (for example, the load 520 is a lamp). If it is in a low voltage state (low voltage determination threshold information> current voltage value information), the load 520 does not exhibit sufficient performance or does not operate in the first place. (For example, if the load 520 is a lamp, a necessary and sufficient illuminance cannot be obtained, and if the load 520 is a motor, it may not rotate).

  Thus, by diagnosing the operating state of the load 520, it is possible to diagnose whether or not the power supply line 530 is abnormal. Then, if the abnormality of the power supply line 530 is notified, it is possible to prevent the load 520 from being damaged due to the abnormality.

  The navigation display device 130 is a kind of notification means, and the diagnosis result of the CPU 123 D / A converted by the D / A converter 124, that is, information on the presence / absence of a failure in the load 520 and the branch feeder 532, in other words, For example, by displaying information on whether or not it is normal, it is for informing the rider of the diagnosis result. As a result, detailed information can be notified to the passenger, and a separate display device as an output device need not be provided around the steering wheel, and the mechanism can be simplified. Of course, sound may be output together with the display on the navigation display device 130 or in place of the display. However, the output device is preferably the navigation display device 130 or other display device so that the passenger can easily recognize it.

  Of course, the configuration 120 of the ECU is not limited to the above-described components 121 to 124, and the processing executed by each of the components 121 to 124 is not limited to the above processing. Various processes necessary for normal operation may be executed.

  Hereinafter, the present invention has been described based on examples, but it goes without saying that the above examples can be variously improved and modified without departing from the scope of the present invention. These modifications are also included.

  For example, in the above embodiment, the IPS 110 includes a current detection sensor 111, a voltage detection sensor 112, and a semiconductor switching element 113. However, the IPS 110 may not necessarily include both as long as it includes either the current detection sensor 111 or the voltage detection sensor 112. Moreover, you may use together what has both structures, and what has one structure.

1 is a block diagram of a vehicle short position detection apparatus according to an embodiment of the present invention.

Explanation of symbols

100 Vehicle Short Position Detection Device 110 Intelligent Power Switch Device (IPS)
111 Current detection sensor 112 Voltage detection sensor 113 Semiconductor switching element 120 Electric control system (ECS)
130 Display device for navigation

Claims (4)

Operation that temporarily supplies power to the load installed in the vehicle when the key member inserted into the key insertion port of the vehicle is turned into the ignition mode or the accessory mode by rotating. Pre-trial power supply means;
Diagnosing means for diagnosing whether or not there is a failure in the power supply line or load based on power feeding by the pre-operational trial power feeding means;
A vehicle pre-operation inspection device, comprising: a notification unit configured to notify a diagnosis result of the diagnosis unit from within the vehicle. The pre-operational trial power supply means includes a switching means for electrically temporarily connecting a power supply line for supplying power from the battery device to the load, and a current detection for detecting a current flowing through the power supply line in a state connected by the switching means. Means and
The diagnostic means diagnoses the failure of the load based on the magnitude of the detection value of the current detection means,
2. The vehicle pre-operation inspection device according to claim 1, wherein the notifying means displays or outputs the diagnosis result of the diagnosis means. The pre-operational trial power supply means detects a voltage at a predetermined position of the power supply line in a state where the power supply line for supplying power from the battery device to the load is electrically connected temporarily and the state where the power supply line is connected by the switching means. Voltage detection means,
The diagnostic means diagnoses the failure of the load based on the magnitude of the detection value of the current detection means,
2. The vehicle pre-operation inspection device according to claim 1, wherein the notifying means displays or outputs the diagnosis result of the diagnosis means.   The vehicle pre-operation inspection device according to any one of claims 1 to 3, wherein the notification means displays a diagnosis result on a monitor device of the navigation system.

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