JP2015187549A - vehicle display device - Google Patents

vehicle display device Download PDF

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JP2015187549A
JP2015187549A JP2014064336A JP2014064336A JP2015187549A JP 2015187549 A JP2015187549 A JP 2015187549A JP 2014064336 A JP2014064336 A JP 2014064336A JP 2014064336 A JP2014064336 A JP 2014064336A JP 2015187549 A JP2015187549 A JP 2015187549A
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vehicle speed
vehicle
display
speed
control function
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真 小黒
Makoto Oguro
真 小黒
政江 桜井
Masae Sakurai
政江 桜井
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Nippon Seiki Co Ltd
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Abstract

PROBLEM TO BE SOLVED: To provide a vehicle display device having a small risk of allowing display values of both of a travel speed (vehicle speed) and a set vehicle speed to differ each other when the travel speed of a vehicle becomes the set vehicle speed by a constant speed control function.SOLUTION: A vehicle display device 1 includes: display means 2; and control means 3 for allowing the display means 2 to display a vehicle speed and a set vehicle speed of a constant speed control function by discrete representation (a vehicle speed image 20 and a set vehicle speed image 221). The control means 2 has a hysteresis characteristic in allowing the display means 2 to display a vehicle speed. The control means 2 sets the hysteresis characteristic to be smaller in a period where the constant speed control function controls the acceleration/deceleration of the vehicle speed compared with a period other than the period where the constant speed control function controls the acceleration/deceleration of the vehicle speed.

Description

本発明は、定速制御機能によって車両の走行速度(車速)が設定車速となったときに、両車速の表示値が乖離する虞が少ない車両用表示装置に関する。   The present invention relates to a vehicular display device that is less likely to cause the display values of both vehicle speeds to deviate when the traveling speed (vehicle speed) of a vehicle becomes a set vehicle speed by a constant speed control function.

従来、車速を指針式計器で指示するのに際して、センシングした車速のサンプリング値に対し、平均処理や遅延処理を施して、指針の指示を視認性良く滑らかにするものが特許文献1に開示されている。   Conventionally, when a vehicle speed is indicated by a pointer-type instrument, an average process or a delay process is performed on a sensed vehicle speed sampling value to smooth the indication of the pointer with high visibility. Yes.

また、車両の定速制御機能(クルーズコントロール機能)を有する車両に搭載される車両用表示装置においては、車速と、定速制御機能の設定車速とを表示器に対比可能に並べてアラビア数字で表示するものが種々提案されているが、定速制御機能によって車速が設定車速に達したと判定して定速制御機能が車両の加減速をしなくなったにもかかわらず、両車速として表示されるアラビア数字が同一にならない場合があった。   Moreover, in a vehicle display device mounted on a vehicle having a vehicle constant speed control function (cruise control function), the vehicle speed and the set vehicle speed of the constant speed control function are displayed in Arabic numerals in a manner comparable to the display. There are various proposals, but the constant speed control function determines that the vehicle speed has reached the set vehicle speed, and the constant speed control function no longer accelerates or decelerates the vehicle, but it is displayed as both vehicle speeds. Arabic numerals were not always the same.

上記課題に鑑みて、前述するような表示の乖離の一因が、車速が高速になるに従ってタイヤの動半径が歪むことが表示器に表示する車速の演算に考慮されていないことにあるものとして、特許文献2には、車両の走行速度に対応したタイヤの動半径の歪を考慮して表示器に表示する車速を補正することにより、表示器に表示する車速の精度を高めて両者の表示の乖離を少なくする技術が開示されている。   In view of the above problems, it is assumed that one of the causes of the display divergence as described above is that the calculation of the vehicle speed displayed on the display does not take into account that the tire moving radius is distorted as the vehicle speed increases. In Patent Document 2, the vehicle speed displayed on the display is corrected by taking into account the distortion of the tire moving radius corresponding to the traveling speed of the vehicle, thereby increasing the accuracy of the vehicle speed displayed on the display and displaying both of them. A technique for reducing the deviation is disclosed.

特開平8−327664号公報JP-A-8-327664 特開昭61−82171号公報JP-A-61-82171

しかしながら、車速と定速制御機能の設定車速をアラビア数字で表示器に表示する場合においては、指針式計器のように連続表示とは異なり離散表示となることから、ヒステリシス特性を持たせて、表示分解能の境界値を往来する変化に過敏に反応して頻繁に数値が切り替わって視認性が低下することを防止するのが一般的であるが、当該ヒステリシス特性によっては、定速制御機能が設定車速に車速が達したと判定して定速制御機能が車両の加減速をしなくなったにもかかわらず、両車速として表示されるアラビア数字が同一にならず表示に乖離が起きる場合がある。
また、車速をアラビア数字などの離散表示で表示する場合においては、指針で指標部を指示するような指針式計器に比べて2つの表示値の差が明確となるため、車速が設定車速に到達した場合において、両者の表示が同一にならないことは運転者に違和感を与えるものであり、商品性を損なう。
However, when the vehicle speed and the set speed of the constant speed control function are displayed on the display using Arabic numerals, the display is discrete, unlike the continuous display, as with the pointer-type instrument. It is common to prevent the visibility from degrading due to frequent changes in the resolution boundary value, and depending on the hysteresis characteristics, the constant speed control function may be Even if it is determined that the vehicle speed has been reached, the constant speed control function no longer accelerates or decelerates the vehicle, the Arabic numerals displayed as the two vehicle speeds may not be the same and the display may be different.
Also, when the vehicle speed is displayed in discrete display such as Arabic numerals, the difference between the two display values is clear compared to a pointer-type instrument that indicates the indicator part with a pointer, so the vehicle speed reaches the set vehicle speed. In such a case, the fact that both displays do not become the same makes the driver feel uncomfortable and impairs the merchantability.

本発明は、上述した課題を鑑みてなされたものであり、定速制御機能によって車速が設定車速となったときに、両車速の表示値が乖離する虞が少ない車両用表示装置を提供することを目的とする。   The present invention has been made in view of the above-described problems, and provides a vehicle display device that is less likely to cause the display values of both vehicle speeds to deviate when the vehicle speed becomes a set vehicle speed by a constant speed control function. With the goal.

本発明に係る車両用表示装置は、
表示手段と、車速と定速制御機能の設定車速とを離散表現で前記表示手段に表示させる制御手段と、を備えた車両用表示装置であって、
前記制御手段は、前記車速を前記表示手段に表示させるにあたってヒステリシス特性を持ち、
前記制御手段は、前記定速制御機能が前記車速の加減速を制御している期間において、前記ヒステリシス特性を前記期間でない他の期間よりも小さく設定する。
A vehicle display device according to the present invention includes:
A vehicle display device comprising: display means; and control means for causing the display means to display the vehicle speed and a set vehicle speed of the constant speed control function in a discrete expression.
The control means has a hysteresis characteristic in displaying the vehicle speed on the display means,
The control means sets the hysteresis characteristic to be smaller than other periods other than the period during the period in which the constant speed control function controls acceleration / deceleration of the vehicle speed.

本発明によれば、定速制御機能によって車速が設定車速となったときに、両車速の表示値が乖離する虞が少ない車両用表示装置を提供することができる。   ADVANTAGE OF THE INVENTION According to this invention, when the vehicle speed turns into a setting vehicle speed by a constant speed control function, the display apparatus for vehicles with little possibility that the display value of both vehicle speed will deviate can be provided.

本発明の実施形態である車両用表示装置の正面図である。It is a front view of the display apparatus for vehicles which is an embodiment of the present invention. 同実施形態である車両用表示装置の電気的構成図である。It is an electrical block diagram of the display apparatus for vehicles which is the embodiment.

以下、添付図面に基づいて、本発明の実施形態を説明する。   Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

本発明に係る車両用表示装置1は、表示手段2と、制御手段3と、を備え、例えばCAN(Controller Area Netrowk)からなる通信路4から車速、エンジン回転数、残燃料量、定速制御機能の動作状態などの各種車両情報の入力に応じて、表示手段2に計器画像を表示する。   The vehicle display device 1 according to the present invention includes a display unit 2 and a control unit 3. For example, a vehicle speed, an engine speed, a remaining fuel amount, and a constant speed control from a communication path 4 made of CAN (Controller Area Netrowk). An instrument image is displayed on the display means 2 in response to input of various vehicle information such as the operation state of the function.

表示手段2は、薄膜トランジスタ型カラー液晶モジュールや、有機EL(Electro Luminescence)モジュールからなる表示器である。   The display means 2 is a display device composed of a thin film transistor type color liquid crystal module or an organic EL (Electro Luminescence) module.

制御手段3は、CPUなどの演算装置と、RAM,ROMなどの記憶装置と、外部装置への入出力を備えたマイクロコントローラからなり、通信路4から入力された各種車両情報のうち、車速と定速制御機能の動作状態とを計器画像として構成して表示手段2に表示させる。
計器画像は、車速をアラビア数字で示す車速画像20と、定速制御機能の動作状態を示す定速制御機能状態画像22とで構成され、定速制御機能状態画像22は、定速制御機能に設定されている車間距離を示す設定車間距離画像220と、定速制御機能に設定されている車速をアラビア数字で表す設定車速画像221と、からなる。
また、車速画像20と設定車速画像221に表示するアラビア数字の表示分解能は1キロメートル毎時(km/h)とする。
The control means 3 includes a calculation device such as a CPU, a storage device such as a RAM and a ROM, and a microcontroller having input / output to / from an external device. Of various vehicle information input from the communication path 4, the vehicle speed and The operation state of the constant speed control function is configured as an instrument image and displayed on the display means 2.
The instrument image is composed of a vehicle speed image 20 that indicates the vehicle speed in Arabic numerals and a constant speed control function state image 22 that indicates the operation state of the constant speed control function. The constant speed control function state image 22 is a constant speed control function. It consists of a set inter-vehicle distance image 220 showing the set inter-vehicle distance, and a set vehicle speed image 221 representing the vehicle speed set in the constant speed control function with Arabic numerals.
Further, the display resolution of Arabic numerals displayed in the vehicle speed image 20 and the set vehicle speed image 221 is 1 km per hour (km / h).

また、制御手段3は、通信路4から入力される車速を表示手段2に表示するにあたっては、通信路4から入力される車速に、平均処理と遅延処理を施して補正車速を求めた後、当該補正車速にヒステリシス処理を施して表示車速を求め、当該表示車速を表示手段2に表示する。   In addition, when displaying the vehicle speed input from the communication path 4 on the display means 2, the control means 3 performs an averaging process and a delay process on the vehicle speed input from the communication path 4 to obtain a corrected vehicle speed. The corrected vehicle speed is subjected to hysteresis processing to obtain a display vehicle speed, and the display vehicle speed is displayed on the display means 2.

平均処理は、通信路4から入力される車速について、現時点から過去の一定期間において入力された車速の平均値を求め、目標車速として遅延処理に出力する。
また、目標車速の分解能は、0.01キロメートル毎時(km/h)とする。
In the average process, an average value of vehicle speeds input in a certain period in the past from the present time is obtained for the vehicle speed input from the communication path 4, and is output to the delay process as a target vehicle speed.
Further, the resolution of the target vehicle speed is set to 0.01 kilometers per hour (km / h).

遅延処理は、目標車速と前回の補正車速との差分を求め、差分をNで除算したものを、前回の補正車速に加算して新たな補正車速としてヒステリシス処理に出力する。なお、Nの数が大きいほど車速の変動が表示手段2に反映されるまでの遅延時間が大きくなる。
また、補正車速の分解能は、0.01キロメートル毎時(km/h)とする。
In the delay process, a difference between the target vehicle speed and the previous corrected vehicle speed is obtained, and the difference divided by N is added to the previous corrected vehicle speed and output to the hysteresis process as a new corrected vehicle speed. In addition, the delay time until the fluctuation | variation of a vehicle speed is reflected on the display means 2 becomes so large that the number of N is large.
The resolution of the corrected vehicle speed is 0.01 km / h (km / h).

ヒステリシス処理は、遅延処理が出力した補正車速に対し、ヒステリシス特性を適用した表示車速を求める。また、定速制御機能が車速を設定車速を維持または達するように制御している期間と、それ以外の期間(他の期間)において、異なるヒステリシス特性を適用する。
また、表示車速の分解能は、車速画像20の表示分解能と同様に1キロメートル毎時(km/h)とする。
具体的なヒステリシス特性の設定例としては、定速制御機能が車速を設定車速を維持または達するように制御している期間においてはヒステリシス幅を±0.5キロメートル毎時と設定し、他の期間においては、ヒステリシス幅を±1.0キロメートル毎時と設定する。
In the hysteresis process, a display vehicle speed in which a hysteresis characteristic is applied to the corrected vehicle speed output by the delay process is obtained. Further, different hysteresis characteristics are applied in a period in which the constant speed control function controls the vehicle speed to maintain or reach the set vehicle speed, and in other periods (other periods).
Further, the resolution of the display vehicle speed is set to 1 km per hour (km / h) similarly to the display resolution of the vehicle speed image 20.
As a specific setting example of hysteresis characteristics, the hysteresis width is set to ± 0.5 km / hour during the period when the constant speed control function is controlling the vehicle speed to maintain or reach the set vehicle speed, and during other periods Sets the hysteresis width to ± 1.0 kilometers per hour.

このように構成することで、定速制御機能が車速を設定車速を維持または達するように制御している期間においては、他の期間に比べて車速画像20の応答性が鋭敏になることから、定速制御機能によって車速が設定車速となったときに、両車速の表示値が乖離する虞が少ない。
また、定速制御機能が車速を設定車速を維持または達するように制御している期間において、車速画像20の応答性が鋭敏になることから、定速制御機能が車速を設定車速を維持または達するように制御している様を如実に伝えることができ、車両用計器の商品性を高めることができる。
By configuring in this way, in the period in which the constant speed control function is controlling the vehicle speed to maintain or reach the set vehicle speed, the responsiveness of the vehicle speed image 20 becomes sharper than in other periods. When the vehicle speed becomes the set vehicle speed by the constant speed control function, there is little possibility that the display values of both vehicle speeds will deviate.
Further, since the responsiveness of the vehicle speed image 20 becomes sharp during the period in which the constant speed control function controls the vehicle speed to maintain or reach the set vehicle speed, the constant speed control function maintains or reaches the set vehicle speed. In this way, it is possible to clearly tell that the vehicle is being controlled, and to improve the merchantability of the vehicle meter.

以上、本発明の実施形態について説明したが、これらに限られず種々の変形を行うことができる。   As mentioned above, although embodiment of this invention was described, it is not restricted to these, A various deformation | transformation can be performed.

例えば、表示手段2に表示する車速は、アラビア数字ではなく、複数のセグメントで構成した帯状の図形集合体であってもよく、種々の離散表示に適用が可能である。   For example, the vehicle speed displayed on the display means 2 may not be an Arabic numeral but may be a band-like figure aggregate composed of a plurality of segments, and can be applied to various discrete displays.

また、制御手段3は、ヒステリシス特性を車速の増加(+)方向と減少(−)方向とで異なるヒステリシス特性を持つものとしてもよい。
制御手段3は、定速制御機能が車速を設定車速を維持または達するように制御している期間におけるヒステリシス特性を、車速と設定車速の大小関係に応じて、定速制御機能が車速を設定車速となるように制御する方向に対応するヒステリシス特性(車速<設定車速であれば、増加方向に対するヒステリシス特性)を、他の方向に対応するヒステリシス特性に比べて小さく設定することが好ましい。
Further, the control means 3 may have different hysteresis characteristics in the vehicle speed increasing (+) direction and the decreasing (−) direction.
The control means 3 has a hysteresis characteristic during a period in which the constant speed control function controls the vehicle speed to maintain or reach the set vehicle speed, and the constant speed control function sets the vehicle speed according to the magnitude relationship between the vehicle speed and the set vehicle speed. It is preferable to set the hysteresis characteristic corresponding to the direction to be controlled to be (the hysteresis characteristic with respect to the increasing direction if vehicle speed <set vehicle speed) smaller than the hysteresis characteristic corresponding to the other direction.

本発明は、自動車などの移動体に搭載される車両情報の表示装置として好適である。   The present invention is suitable as a vehicle information display device mounted on a moving body such as an automobile.

1 …車両用表示装置
2 …表示手段
20 …車速画像
21 …残燃料画像
22 …定速制御機能状態画像
220 …設定車間画像
221 …設定車速画像
3 …制御手段
4 …通信路
DESCRIPTION OF SYMBOLS 1 ... Vehicle display apparatus 2 ... Display means 20 ... Vehicle speed image 21 ... Remaining fuel image 22 ... Constant speed control function state image 220 ... Setting inter-vehicle image 221 ... Setting vehicle speed image 3 ... Control means 4 ... Communication path

Claims (2)

表示手段と、
車速と定速制御機能の設定車速とを離散表現で前記表示手段に表示させる制御手段と、を備えた車両用表示装置であって、
前記制御手段は、前記車速を前記表示手段に表示させるにあたってヒステリシス特性を持ち、
前記制御手段は、前記定速制御機能が前記車速の加減速を制御している期間において、前記ヒステリシス特性を前記期間でない他の期間よりも小さく設定する
ことを特徴とする車両用表示装置。
Display means;
Control means for displaying the vehicle speed and the set vehicle speed of the constant speed control function on the display means in a discrete expression, and a vehicle display device comprising:
The control means has a hysteresis characteristic in displaying the vehicle speed on the display means,
The vehicle display device, wherein the control means sets the hysteresis characteristic to be smaller than other periods other than the period during the period in which the constant speed control function controls acceleration / deceleration of the vehicle speed.
前記制御手段は、前記定速制御機能が前記車速の加減速を制御している期間におけるヒステリシス特性を、前記車速と前記設定車速との大小関係に応じて変更する
ことを特徴とする請求項1に記載の車両用表示装置。
The control means changes a hysteresis characteristic in a period during which the constant speed control function controls acceleration / deceleration of the vehicle speed according to a magnitude relationship between the vehicle speed and the set vehicle speed. The vehicle display device described in 1.
JP2014064336A 2014-03-26 2014-03-26 vehicle display device Pending JP2015187549A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107415954A (en) * 2017-07-24 2017-12-01 大陆汽车车身电子***(芜湖)有限公司 The method and instrument of car speed are shown under cruise pattern

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107415954A (en) * 2017-07-24 2017-12-01 大陆汽车车身电子***(芜湖)有限公司 The method and instrument of car speed are shown under cruise pattern

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