JP2012153294A - Vehicular brake light control device - Google Patents

Vehicular brake light control device Download PDF

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JP2012153294A
JP2012153294A JP2011015252A JP2011015252A JP2012153294A JP 2012153294 A JP2012153294 A JP 2012153294A JP 2011015252 A JP2011015252 A JP 2011015252A JP 2011015252 A JP2011015252 A JP 2011015252A JP 2012153294 A JP2012153294 A JP 2012153294A
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vehicle
deceleration
gradient angle
brake light
control device
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Toshiyuki Matsumi
敏行 松見
Yoshiaki Sano
喜亮 佐野
Norihiko Hatsumi
典彦 初見
Takanori Sugimoto
喬紀 杉本
Hiroaki Miyamoto
寛明 宮本
Yasuyuki Hatsuda
康之 初田
Akira Hashizaka
明 橋坂
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Mitsubishi Motors Corp
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Mitsubishi Motors Corp
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Abstract

PROBLEM TO BE SOLVED: To provide a brake light control device of an electric vehicle capable of reliably alerting attention to a succeeding vehicle even when the electric vehicle is on a slope.SOLUTION: When a regenerative brake is operated (S10), the vehicle deceleration is computed by a vehicle deceleration computation unit based on a change of the vehicle speed to be detected by a vehicle speed sensor (S12). The road surface gradient angle is computed by a slope gradient computation unit based on the difference between the requested torque of a driver which is computed from the accelerator opening to be detected by an accelerator position sensor and the actual torque of the vehicle in the present situation, and the vehicle speed to be detected by the vehicle speed sensor (S14). Next, the vehicle deceleration is corrected by a deceleration correction unit according to the road surface gradient angle, and the gradient angle correction deceleration is computed thereby (S16). If the gradient angle correction deceleration is larger than the predetermined value, a stop lamp 21 is lit (S18, S20).

Description

本発明は、車両の制動灯制御装置に係り、詳しくは、勾配における制動灯の点灯制御に関する。   The present invention relates to a brake light control device for a vehicle, and more particularly to lighting control of a brake light on a slope.

従来、モータ（電動機）にて駆動される電気自動車において安全性の向上として、アクセルを放したことによる減速、所謂、回生ブレーキによる減速時に、車両後方のストップランプ（制動灯）を点灯させて後続車に自車の減速を知らせるようにして、後続車への注意喚起を行うようにしている。その手法として、回生ブレーキ時の回生電流を検出することにより減速を検出し制動灯を点灯させる方法（特許文献１）や、電動機を作動させる電源の電圧が所定電圧以下である時に減速を検出し、制動灯を点灯させる方法（特許文献２）が知られている。   Conventionally, in an electric vehicle driven by a motor (electric motor), as an improvement in safety, a stop lamp (braking light) at the rear of the vehicle is turned on at the time of deceleration by releasing the accelerator, that is, deceleration by regenerative braking. The car is informed of the deceleration of its own vehicle and alerts the following car. As a method for this, a method of detecting deceleration by detecting a regenerative current during regenerative braking and lighting a brake lamp (Patent Document 1), or detecting deceleration when the voltage of a power source for operating an electric motor is equal to or lower than a predetermined voltage. A method (Patent Document 2) for turning on a brake light is known.

実開平７−９００２号公報Japanese Utility Model Publication No. 7-9002 実開昭６３−１４９１０４号公報Japanese Utility Model Publication No. 63-149104

しかしながら、上記特許文献１及び２の技術では、車両が坂路を走行すると坂路の影響を受け、登坂時には登坂による減速も加わり制動灯が平坦路と比較して点灯しやすくなり後続車が煩わしく感じたり、降坂時には降坂により加速するため平坦路と比較して点灯しにくくなったりして、後続車への注意喚起が十分にできない虞があり好ましいことではない。   However, in the techniques of Patent Documents 1 and 2, when the vehicle travels on a slope, the vehicle is affected by the slope, and when the vehicle is climbed, deceleration due to the climb is added, and the braking light is more easily lit than the flat road, and the following vehicle may feel troublesome. On the downhill, acceleration is caused by the downhill, which makes it difficult to turn on compared to a flat road, and there is a possibility that the subsequent vehicle cannot be sufficiently alerted.

本発明は、この様な問題を解決するためになされたもので、その目的とするところは、坂路でも確実に後続車へ注意喚起し、また、後続車が煩わしく感じることを防止することのできる車両の制動灯制御装置を提供することにある。   The present invention has been made to solve such problems, and the object of the present invention is to reliably alert the following vehicle even on a slope and to prevent the following vehicle from being annoying. An object of the present invention is to provide a brake light control device for a vehicle.

上記の目的を達成するために、請求項１の車両の制動灯制御装置では、車両の減速時に後続車に減速を知らせる制動灯を有する車両の制動灯制御装置において、前記車両の減速度を演算する車両減速度演算手段と、前記車両が走行している道路の勾配角を演算する勾配角演算手段と、前記制動灯の点灯を制御する制御手段とを備え、前記制御手段は、前記減速度演算手段にて演算される前記減速度を前記勾配角演算手段にて演算される前記勾配角にて補正して勾配角補正減速度を演算し、更に前記勾配角補正減速度が所定値より大きい場合に前記制動灯を点灯させることを特徴とする。   In order to achieve the above object, the vehicle brake light control device according to claim 1 calculates the deceleration of the vehicle in the vehicle brake light control device having a brake light for notifying the subsequent vehicle of deceleration when the vehicle decelerates. Vehicle deceleration calculation means, gradient angle calculation means for calculating the gradient angle of the road on which the vehicle is traveling, and control means for controlling lighting of the brake light, wherein the control means includes the deceleration A gradient angle correction deceleration is calculated by correcting the deceleration calculated by the calculation means with the gradient angle calculated by the gradient angle calculation means, and the gradient angle correction deceleration is larger than a predetermined value. In this case, the brake light is turned on.

また、請求項２の車両の制動灯制御装置では、請求項１において、前記車両減速度演算手段は、前記車両の車速を検出する車速検出手段と、前記車速検出手段にて検出される前記車速から減速度を演算する減速度演算手段とで構成されることを特徴とする。
また、請求項３の車両の制動灯制御装置では、請求項１または請求項２において、前記車両は、電動機により駆動される電動車両であって、前記制動手段は、回生制動が開始されると、前記減速度演算手段にて演算される前記減速度を前記勾配角演算手段にて演算される前記勾配角にて補正して勾配角補正減速度を演算し、更に前記勾配角補正減速度が所定値より大きい場合に前記制動灯を点灯させることを特徴とする。 According to a second aspect of the present invention, there is provided the vehicle brake light control device according to the first aspect, wherein the vehicle deceleration calculating means includes a vehicle speed detecting means for detecting a vehicle speed of the vehicle and the vehicle speed detected by the vehicle speed detecting means. It is comprised with the deceleration calculating means which calculates deceleration from.
According to a third aspect of the present invention, there is provided the vehicle brake light control device according to the first or second aspect, wherein the vehicle is an electric vehicle driven by an electric motor, and the braking means starts regenerative braking. The deceleration calculated by the deceleration calculating means is corrected by the gradient angle calculated by the gradient angle calculating means to calculate a gradient angle corrected deceleration, and the gradient angle corrected deceleration is further calculated. The brake light is turned on when larger than a predetermined value.

また、請求項４の車両の制動灯制御装置では、請求項３において、前記車両減速度演算手段は、前記電動車両の回生エネルギーを検出する回生エネルギー検出手段と、前記回生エネルギー検出手段にて検出される前記回生エネルギー量から減速度を演算する減速度演算手段とで構成されることを特徴とする。   According to a fourth aspect of the present invention, there is provided the vehicle brake light control device according to the third aspect, wherein the vehicle deceleration calculating means is detected by a regenerative energy detecting means for detecting regenerative energy of the electric vehicle and the regenerative energy detecting means. And a deceleration calculating means for calculating a deceleration from the regenerative energy amount.

請求項１の発明によれば、車両減速度演算手段にて演算される減速度を勾配角演算手段にて演算される勾配角にて補正して勾配角補正減速度を演算し、勾配角補正減速度が所定値より大きい場合に制動灯を点灯させるようにしている。
このように、減速度を勾配角にて補正しているので坂路であっても、車両への坂路の影響を無くし、平坦路走行における回生制動時と同様の減速度にて制動灯を点灯させることができる。 According to the first aspect of the present invention, the gradient angle correction deceleration is calculated by correcting the deceleration calculated by the vehicle deceleration calculation means with the gradient angle calculated by the gradient angle calculation means, and the gradient angle correction is performed. When the deceleration is larger than a predetermined value, the brake light is turned on.
In this way, since the deceleration is corrected by the slope angle, the influence of the slope on the vehicle is eliminated even on a slope, and the brake light is turned on at the same deceleration as during regenerative braking on flat road running. be able to.

従って、坂路による影響を無くし制動灯を点灯させることができるので、降坂路であっても後続車に確実に注意喚起することができ、また、登坂路であっても後続車が前走車の制動灯を煩わしく感じることを防止することができる。
また、請求項２の発明によれば、車両減速度演算手段は、車両の車速を検出する車速検出手段と、車速検出手段にて検出される車速から減速度を演算する減速度演算手段とで構成されており、車両に搭載される既存の検出手段により減速度を演算することができるので、簡単な構成としてコストの増加を抑制し、坂路であっても後続車への確実な注意喚起及び煩わしく感じさせることを防止することができる。 Therefore, it is possible to eliminate the influence of the slope and turn on the brake light, so that it is possible to surely alert the following vehicle even on the downhill road, and the succeeding vehicle on the uphill road It is possible to prevent the brake light from being felt bothersome.
According to the invention of claim 2, the vehicle deceleration calculating means includes vehicle speed detecting means for detecting the vehicle speed of the vehicle, and deceleration calculating means for calculating the deceleration from the vehicle speed detected by the vehicle speed detecting means. Because it is configured and the deceleration can be calculated by existing detection means mounted on the vehicle, it is possible to suppress the increase in cost as a simple configuration, and to reliably alert the following vehicle even on a slope It is possible to prevent annoying feeling.

また、請求項３の発明によれば、車両を電動機により駆動される電動車両とし、回生制動が開始されると、減速度を勾配角にて補正し勾配角補正減速度を演算し、勾配角補正減速度が所定値よりも大きい場合に制動灯を点灯させることができるので、簡単な構成としてコストの増加を抑制し、電動車両であっても坂路であっても後続車への確実な注意喚起及び煩わしく感じさせることを防止することができる。   According to the invention of claim 3, when the vehicle is an electric vehicle driven by an electric motor and regenerative braking is started, the deceleration is corrected by the gradient angle, the gradient angle correction deceleration is calculated, and the gradient angle is calculated. Since the brake light can be lit when the corrected deceleration is greater than the predetermined value, the cost can be kept up with a simple configuration, and the vehicle is surely paid attention to the following vehicle whether it is an electric vehicle or a slope. Arousal and annoying feeling can be prevented.

また、請求項４の発明によれば、車両減速度演算手段は、電動車両の回生エネルギーを検出する回生エネルギー検出手段と、回生エネルギー検出手段にて検出される回生エネルギー量から減速度を演算する減速度演算手段とで構成されており、電動車両に搭載される既存の検出手段により減速度を演算することができるので、簡単な構成としてコストの増加を抑制し、坂路であっても後続車への確実な注意喚起及び煩わしく感じさせることを防止することができる。   According to the invention of claim 4, the vehicle deceleration calculating means calculates the deceleration from the regenerative energy detecting means for detecting the regenerative energy of the electric vehicle and the regenerative energy amount detected by the regenerative energy detecting means. It is composed of deceleration calculation means, and deceleration can be calculated by existing detection means mounted on an electric vehicle. It is possible to prevent the user from being surely alerted and annoying.

本発明の実施形態に係る電気自動車の制動灯制御装置の概略構成図である。It is a schematic block diagram of the brake light control apparatus of the electric vehicle which concerns on embodiment of this invention. 本発明の実施形態に係る電気自動車の制動灯制御装置のストップランプ点灯制御の制御ルーチンを示すフローチャートである。It is a flowchart which shows the control routine of the stop lamp lighting control of the brake light control apparatus of the electric vehicle which concerns on embodiment of this invention.

以下、本発明の実施形態を図面に基づき説明する。
図１は、本発明の実施形態に係る電気自動車の制動灯制御装置の概略構成図である。以下、電気自動車の制動灯制御装置の構成を説明する。
本実施形態の車両は、当該車両の走行装置として、バッテリより電力が供給されインバータにより制御されるモータ（電動機）を備える電気自動車である。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a schematic configuration diagram of a brake light control device for an electric vehicle according to an embodiment of the present invention. Hereinafter, the configuration of the brake light control device for an electric vehicle will be described.
The vehicle of this embodiment is an electric vehicle provided with a motor (electric motor) that is supplied with electric power from a battery and controlled by an inverter as a traveling device of the vehicle.

図１に示すように、本実施形態の電気自動車の制動灯制御装置は、例えば車輪速度から車両の車速を検出する車速センサ（車速検出手段）１１と、アクセルの開き度合いを検出するアクセルポジションセンサ１２と、機械式ブレーキ或いはモータの回生ブレーキの作動に応じて後続車にブレーキの作動を注意喚起するストップランプ（制動灯）２１及び、車両の総合的な制御を行うための制御装置であって、入出力装置、記憶装置（ＲＯＭ、ＲＡＭ、不揮発性ＲＡＭ等）及び中央演算処理装置（ＣＰＵ）等を含んで構成される電子コントロールユニット（以下、ＥＣＵという）３０とで構成されている。   As shown in FIG. 1, a brake light control device for an electric vehicle according to this embodiment includes, for example, a vehicle speed sensor (vehicle speed detection means) 11 that detects a vehicle speed from a wheel speed, and an accelerator position sensor that detects the degree of opening of an accelerator. 12, a stop lamp (braking light) 21 that alerts the following vehicle to the operation of the brake according to the operation of the mechanical brake or the regenerative brake of the motor, and a control device for performing comprehensive control of the vehicle. And an electronic control unit (hereinafter referred to as ECU) 30 including an input / output device, a storage device (ROM, RAM, nonvolatile RAM, etc.) and a central processing unit (CPU).

ＥＣＵ３０は、車両の総合的な制御を行うための制御装置であり、入出力装置、記憶装置（ＲＯＭ、ＲＡＭ、不揮発性ＲＡＭ等）、中央演算処理装置（ＣＰＵ）及びタイマ等を含んで構成される。
ＥＣＵ３０の入力側には、上記車速センサ１１及びアクセルポジションセンサ１２が接続されており、これらのセンサ類からの検出情報が入力される。 The ECU 30 is a control device for performing comprehensive control of the vehicle, and includes an input / output device, a storage device (ROM, RAM, nonvolatile RAM, etc.), a central processing unit (CPU), a timer, and the like. The
The vehicle speed sensor 11 and the accelerator position sensor 12 are connected to the input side of the ECU 30, and detection information from these sensors is input.

一方、ＥＣＵ３０の出力側には、上記ストップランプ２１が接続されている。
ＥＣＵ３０は、車速センサ１１からの検出情報に基づいて、現在の車両の減速度を演算する車両減速度演算部（減速度演算手段）３１と、車速センサ１１からの検出情報及びアクセルポジションセンサ１２からの検出情報に基づいて坂路の勾配角を演算する坂路勾配角演算部（勾配角演算手段）３２と、現在の車両の減速度と坂路の勾配角に基づいて、平坦路走行時の減速度に相当する勾配角補正減速度を演算する減速度補正部（制御手段）３３とで構成されている
以下、このように構成された本発明の実施形態に係るＥＣＵ３０でのストップランプ点灯制御について説明する。 On the other hand, the stop lamp 21 is connected to the output side of the ECU 30.
Based on the detection information from the vehicle speed sensor 11, the ECU 30 calculates the vehicle deceleration calculation unit (deceleration calculation means) 31 that calculates the current vehicle deceleration, the detection information from the vehicle speed sensor 11, and the accelerator position sensor 12. The slope angle computing unit (gradient angle computing means) 32 that computes the slope angle of the slope based on the detected information, and the deceleration on the flat road based on the current vehicle deceleration and the slope angle of the slope. It is comprised with the deceleration correction | amendment part (control means) 33 which calculates the corresponding inclination angle correction | amendment deceleration Hereinafter, stop lamp lighting control in ECU30 which concerns on embodiment of this invention comprised in this way is demonstrated. .

図２は、ＥＣＵ３０の実行する本発明の実施形態に係る電気自動車の制動灯制御装置のストップランプ点灯制御の制御ルーチンを示すフローチャートである。
図２に示すように、ステップＳ１０では、回生ブレーキが作動したか否かを判別する。詳しくは、ドライバがアクセルペダルの操作をやめ、アクセルポジションセンサ１２にて検出されるアクセル開度が全閉となっているか、否かを判定する。判別結果が真（Ｙｅｓ）でアクセルポジションセンサ１２にて検出されるアクセル開度が全閉となっており、回生ブレーキが作動していれば、ステップＳ１２に進む。判別結果が偽（Ｎｏ）でアクセルポジションセンサ１２にて検出されるアクセル開度が全閉でなく、回生ブレーキが作動していなければ、ステップＳ１０へ戻り再度判別する。 FIG. 2 is a flowchart showing a control routine of stop lamp lighting control of the brake light control device for an electric vehicle according to the embodiment of the present invention executed by the ECU 30.
As shown in FIG. 2, in step S10, it is determined whether or not the regenerative brake is operated. Specifically, the driver stops operating the accelerator pedal and determines whether or not the accelerator opening detected by the accelerator position sensor 12 is fully closed. If the determination result is true (Yes) and the accelerator opening detected by the accelerator position sensor 12 is fully closed and the regenerative brake is operating, the process proceeds to step S12. If the determination result is false (No) and the accelerator opening detected by the accelerator position sensor 12 is not fully closed and the regenerative brake is not operating, the process returns to step S10 and is determined again.

ステップＳ１２では、車速センサ１１にて検出される車速の変化に基づいて、車両減速度演算部３１にて車両減速度を演算する。そして、ステップＳ１４に進む。
ステップＳ１４では、アクセルポジションセンサ１２にて検出されるアクセル開度から演算されるドライバの要求トルク（回生ブレーキ作動中であるためアクセル開度は全閉でありドライバ要求トルクは０）と、車速センサ１１にて検出される車速より演算される現在の車両の実トルクとに基づいて、坂路勾配角演算部３２にて路面勾配角を演算する。そして、ステップＳ１６に進む。 In step S <b> 12, the vehicle deceleration calculation unit 31 calculates the vehicle deceleration based on the change in the vehicle speed detected by the vehicle speed sensor 11. Then, the process proceeds to step S14.
In step S14, the driver required torque calculated from the accelerator opening detected by the accelerator position sensor 12 (the accelerator opening is fully closed and the driver required torque is 0 because the regenerative brake is operating), and the vehicle speed sensor Based on the current vehicle actual torque calculated from the vehicle speed detected at 11, the road gradient angle calculation unit 32 calculates the road gradient angle. Then, the process proceeds to step S16.

ステップＳ１６では、車両減速度演算部３１にて演算される車両減速度を坂路勾配角演算部３２にて演算される路面勾配角で減速度補正部３３にて補正し、平坦路走行時の減速度に相当する勾配角補正減速度を演算する。そして、ステップＳ１８に進む。
ステップＳ１８では、減速度補正部３３にて演算された勾配角補正減速度が所定値より大きいか否かを判別する。判別結果が真（Ｙｅｓ）で勾配角補正減速度が所定値より大きければ、ステップＳ２０に進む。判別結果が偽（Ｎｏ）で勾配角補正減速度が所定値以下であれば、本ルーチンをリターンする。 In step S16, the vehicle deceleration calculated by the vehicle deceleration calculation unit 31 is corrected by the deceleration correction unit 33 with the road surface gradient angle calculated by the slope gradient angle calculation unit 32, and the vehicle deceleration is reduced on a flat road. The gradient angle correction deceleration corresponding to the speed is calculated. Then, the process proceeds to step S18.
In step S18, it is determined whether or not the gradient angle correction deceleration calculated by the deceleration correction unit 33 is greater than a predetermined value. If the determination result is true (Yes) and the gradient angle correction deceleration is greater than the predetermined value, the process proceeds to step S20. If the determination result is false (No) and the gradient angle correction deceleration is equal to or less than a predetermined value, this routine is returned.

ステップＳ２０では、ストップランプ２１を点灯させ、本ルーチンをリターンする。
以上のように、本発明の実施形態に係る電気自動車の制動灯制御装置によれば、回生ブレーキが作動すると、車速センサ１１にて検出される車速の変化に基づいて、車両減速度演算部３１にて車両減速度を演算し、アクセルポジションセンサ１２にて検出されるアクセル開度から演算されるドライバの要求トルクと現在の車両の実トルクとの差、及び車速センサ１１にて検出される車速に基づいて、坂路勾配角演算部３２にて路面勾配角を演算する。次に、車両減速度を路面勾配角で減速度補正部３３にて補正し、勾配角補正減速度を演算する。そして、当該勾配角補正減速度が所定値より大きければ、ストップランプ２１を点灯させるようにしている。 In step S20, the stop lamp 21 is turned on and the routine returns.
As described above, according to the brake lamp control device for an electric vehicle according to the embodiment of the present invention, when the regenerative brake is activated, the vehicle deceleration calculation unit 31 is based on the change in the vehicle speed detected by the vehicle speed sensor 11. The vehicle deceleration is calculated at, the difference between the driver's requested torque calculated from the accelerator opening detected by the accelerator position sensor 12 and the actual torque of the current vehicle, and the vehicle speed detected by the vehicle speed sensor 11 Based on the above, the slope gradient angle calculation unit 32 calculates the road slope angle. Next, the vehicle deceleration is corrected by the deceleration correction unit 33 with the road surface gradient angle, and the gradient angle correction deceleration is calculated. If the gradient angle correction deceleration is greater than a predetermined value, the stop lamp 21 is turned on.

このように、車両減速度演算部３１にて演算された車両減速度を、当該車両の走行している坂路の勾配角である路面勾配角で補正しているので、坂路であっても平坦路走行における回生制動時と同様の減速度にてストップランプ２１を点灯させることができる。
例えば、車両は登坂時には登坂による減速が加わるが、後続車も登坂により減速し易くなるので、単純に当該車両の車両減速度からストップランプ２１を点灯させた場合には、後続車に対する当該車両の相対減速度が低下しなくともストップランプ２１が点灯される場合があり、後続車にとって煩わしさを与える虞がある。 In this way, the vehicle deceleration calculated by the vehicle deceleration calculation unit 31 is corrected by the road surface gradient angle that is the gradient angle of the slope on which the vehicle is traveling. The stop lamp 21 can be lit at the same deceleration as that during regenerative braking during traveling.
For example, when the vehicle is climbing, deceleration due to climbing is applied, but the following vehicle is also easily decelerated due to climbing, so when the stop lamp 21 is simply turned on from the vehicle deceleration of the vehicle, Even if the relative deceleration does not decrease, the stop lamp 21 may be turned on, which may cause trouble for the following vehicle.

また、降坂時には降坂により加速するが、後続車も降坂により加速し易いので、単純に車両減速度からストップランプ２１を点灯させた場合には、後続車に対して当該車両の相対減速度が所定以上になっても、ストップランプ２１が点灯されない場合がある。
本実施形態では、上記のように坂路による影響を無くし平坦路走行における回生制動時と同様の減速度に換算してストップランプ２１を点灯させることができるので、坂路であっても平坦路と同様に後続車に対して注意喚起することができ、特に降坂時に確実に後続車に注意を促し、安全性を高めることができる。 Further, when the vehicle is descending, the vehicle is accelerated by the descending slope, but the following vehicle is also easily accelerated by the descending slope. Therefore, when the stop lamp 21 is simply turned on from the vehicle deceleration, the relative decrease of the vehicle with respect to the succeeding vehicle. Even if the speed exceeds a predetermined value, the stop lamp 21 may not be lit.
In the present embodiment, as described above, the influence of the slope is eliminated, and the stop lamp 21 can be turned on in terms of deceleration similar to that during regenerative braking on a flat road. Therefore, it is possible to alert the following vehicle to the vehicle, and particularly, it is possible to surely alert the following vehicle when going downhill, thereby improving safety.

また、車両の減速度を車速センサ１１にて検出される車速より演算しているので、新たに減速度を検出するセンサ類を追加する必要がないので、簡単な構成としてコストの増加を抑制することができる。
以上で発明の実施形態の説明を終えるが、本発明の形態は上記実施形態に限定されるものではない。 Further, since the deceleration of the vehicle is calculated from the vehicle speed detected by the vehicle speed sensor 11, there is no need to add a new sensor for detecting the deceleration, thereby suppressing an increase in cost with a simple configuration. be able to.
Although the description of the embodiment of the invention is finished as above, the embodiment of the present invention is not limited to the above embodiment.

例えば、上記実施形態では、車両の減速度を車速センサ１１にて検出される車速より演算をするようにしているが、これに限定されるものではなく、例えば、加速度センサや車輪速センサ等を用いて減速度を検出するようにしても良く、この場合でも後続車に確実に注意喚起を行うことができる。また、例えば回生ブレーキ時の回生電流を検出することにより、車両の回生エネルギー量を検出し（回生エネルギー検出手段）、この回生エネルギー量を用いて車両の減速度を演算するようにしてもよい。   For example, in the above embodiment, the deceleration of the vehicle is calculated from the vehicle speed detected by the vehicle speed sensor 11, but the present invention is not limited to this. For example, an acceleration sensor, a wheel speed sensor, etc. The deceleration may be detected by using this, and even in this case, it is possible to reliably alert the following vehicle. Further, for example, by detecting a regenerative current during regenerative braking, the amount of regenerative energy of the vehicle may be detected (regenerative energy detecting means), and the deceleration of the vehicle may be calculated using this amount of regenerative energy.

また、本実施例では、回生ブレーキが作動する電気自動車またはハイブリッド自動車という所謂電動車両についての説明をしたが、回生ブレーキの作動有無に関係なく内燃機関を駆動源とするガソリン車においても、車速センサ、加速度センサや車輪速センサより減速度を検出するようにしてもよい。   In the present embodiment, an electric vehicle or a hybrid vehicle that operates a regenerative brake has been described. However, a vehicle speed sensor is also used in a gasoline vehicle that uses an internal combustion engine as a drive source regardless of whether or not the regenerative brake is operated. The deceleration may be detected by an acceleration sensor or a wheel speed sensor.

１１ 車速センサ（車速検出手段）
１２ アクセルポジションセンサ
２１ ストップランプ（制動灯）
３０ ＥＣＵ
３１ 車両減速度演算部（減速度演算手段）
３２ 坂路勾配角演算部（勾配角演算手段）
３３ 減速度補正部（制御手段） 11 Vehicle speed sensor (vehicle speed detection means)
12 Accelerator position sensor 21 Stop lamp (braking light)
30 ECU
31 Vehicle deceleration calculation unit (deceleration calculation means)
32 Slope slope angle calculation unit (gradient angle calculation means)
33 Deceleration correction part (control means)

Claims (4)

車両の減速時に後続車に減速を知らせる制動灯を有する車両の制動灯制御装置において、
前記車両の減速度を演算する車両減速度演算手段と、
前記車両が走行している道路の勾配角を演算する勾配角演算手段と、
前記制動灯の点灯を制御する制御手段とを備え、
前記制御手段は、
前記減速度演算手段にて演算される前記減速度を前記勾配角演算手段にて演算される前記勾配角にて補正して勾配角補正減速度を演算し、
更に前記勾配角補正減速度が所定値より大きい場合に前記制動灯を点灯させることを特徴とする車両の制動灯制御装置。 In a brake light control device for a vehicle having a brake light that informs a subsequent vehicle of deceleration when the vehicle decelerates,
Vehicle deceleration calculation means for calculating the deceleration of the vehicle;
A gradient angle calculating means for calculating a gradient angle of a road on which the vehicle is traveling;
Control means for controlling lighting of the brake light,
The control means includes
Correcting the deceleration calculated by the deceleration calculating means with the gradient angle calculated by the gradient angle calculating means to calculate a gradient angle corrected deceleration,
Furthermore, the brake light control device for a vehicle, wherein the brake light is turned on when the gradient angle correction deceleration is larger than a predetermined value. 前記車両減速度演算手段は、
前記車両の車速を検出する車速検出手段と、
前記車速検出手段にて検出される前記車速から減速度を演算する減速度演算手段とで構成されることを特徴とする、請求項１に記載の車両の制動灯制御装置。 The vehicle deceleration calculation means includes:
Vehicle speed detecting means for detecting the vehicle speed of the vehicle;
The vehicle brake light control device according to claim 1, comprising: deceleration calculation means for calculating a deceleration from the vehicle speed detected by the vehicle speed detection means. 前記車両は、電動機により駆動される電動車両であって、
前記制動手段は、回生制動が開始されると、前記減速度演算手段にて演算される前記減速度を前記勾配角演算手段にて演算される前記勾配角にて補正して勾配角補正減速度を演算し、
更に前記勾配角補正減速度が所定値より大きい場合に前記制動灯を点灯させることを特徴とする請求項１または請求項２に記載の車両の制動灯制御装置。 The vehicle is an electric vehicle driven by an electric motor,
When regenerative braking is started, the braking means corrects the deceleration calculated by the deceleration calculating means with the gradient angle calculated by the gradient angle calculating means, thereby correcting a gradient angle corrected deceleration. And
The vehicle brake light control device according to claim 1 or 2, wherein the brake light is turned on when the gradient angle correction deceleration is larger than a predetermined value. 前記車両減速度演算手段は、
前記電動車両の回生エネルギーを検出する回生エネルギー検出手段と、
前記回生エネルギー検出手段にて検出される前記回生エネルギー量から減速度を演算する減速度演算手段とで構成されることを特徴とする、請求項３に記載の車両の制動灯制御装置。 The vehicle deceleration calculation means includes:
Regenerative energy detection means for detecting regenerative energy of the electric vehicle;
4. The vehicle brake light control device according to claim 3, further comprising deceleration calculation means for calculating a deceleration from the amount of regenerative energy detected by the regenerative energy detection means.
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