JP7355022B2 - Vehicle instruments - Google Patents

Vehicle instruments Download PDF

Info

Publication number
JP7355022B2
JP7355022B2 JP2020541272A JP2020541272A JP7355022B2 JP 7355022 B2 JP7355022 B2 JP 7355022B2 JP 2020541272 A JP2020541272 A JP 2020541272A JP 2020541272 A JP2020541272 A JP 2020541272A JP 7355022 B2 JP7355022 B2 JP 7355022B2
Authority
JP
Japan
Prior art keywords
state
operation switch
switch group
pulse width
width modulation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
JP2020541272A
Other languages
Japanese (ja)
Other versions
JPWO2020050323A1 (en
Inventor
真 小黒
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Seiki Co Ltd
Original Assignee
Nippon Seiki Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nippon Seiki Co Ltd filed Critical Nippon Seiki Co Ltd
Publication of JPWO2020050323A1 publication Critical patent/JPWO2020050323A1/en
Application granted granted Critical
Publication of JP7355022B2 publication Critical patent/JP7355022B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
    • B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
    • G—PHYSICS
    • G08—SIGNALLING
    • G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C15/00—Arrangements characterised by the use of multiplexing for the transmission of a plurality of signals over a common path
    • G08C15/06—Arrangements characterised by the use of multiplexing for the transmission of a plurality of signals over a common path successively, i.e. using time division
    • G08C15/12—Arrangements characterised by the use of multiplexing for the transmission of a plurality of signals over a common path successively, i.e. using time division the signals being represented by pulse characteristics in transmission link
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/38—Synchronous or start-stop systems, e.g. for Baudot code
    • H04L25/40—Transmitting circuits; Receiving circuits
    • H04L25/49—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Selective Calling Equipment (AREA)
  • Instrument Panels (AREA)

Description

本発明は、操作スイッチの状態を外部機器にゲートウェイする車両用計器に関する。 The present invention relates to a vehicle meter that gateways the state of an operation switch to an external device.

特許文献１には、車両のステアリングスイッチの状態をＣＡＮ（コントローラエリアネットワーク）を介して、車載オーディオ及び車両用計器が共有している。 In Patent Document 1, the state of a steering switch of a vehicle is shared by an in-vehicle audio device and a vehicle instrument via a CAN (controller area network).

特開２０１５－１５１５号公報Unexamined Japanese Patent Publication No. 2015-1515

しかしながら、特許文献１の構成においては、ステアリングスイッチの状態を複数の機器が共有するために、各々の機器がそれぞれＣＡＮプロトコルを組み込んだ通信手段を持たなければならず、構成が煩雑で高価となってしまう。 However, in the configuration of Patent Document 1, in order for multiple devices to share the state of the steering switch, each device must have a communication means incorporating the CAN protocol, making the configuration complicated and expensive. It ends up.

本開示は、上述した課題に鑑みて、簡易な構成で操作スイッチの状態を外部機器にゲートウェイする車両用計器を提供することを目的とする。 In view of the above-mentioned problems, the present disclosure aims to provide a vehicle meter that has a simple configuration and gateways the state of an operation switch to an external device.

本開示の車両用計器１は、
操作スイッチ群ＳＷの状態を入力する入力部１１１と、
前記入力部１１１から入力された前記操作スイッチ群ＳＷの状態に対応する実効電圧となるＤｕｔｙ比のパルス幅変調信号ＰＷＭを出力する出力部と、
前記操作スイッチ群の状態と前記パルス幅変調信号の実効電圧との対応関係を表す変換テーブルを記憶する記憶部と、を備え、
前記変換テーブルは、前記操作スイッチ群の状態の組み合わせの出現頻度が高いほど前記パルス幅変調信号の実効電圧が小さくなるように対応付けられている。 The vehicle instrument 1 of the present disclosure includes:
an input unit 111 for inputting the state of the operation switch group SW;
an output section that outputs a pulse width modulation signal PWM having a duty ratio that is an effective voltage corresponding to the state of the operation switch group SW input from the input section 111;
a storage unit that stores a conversion table representing a correspondence relationship between the state of the operation switch group and the effective voltage of the pulse width modulation signal;
The conversion table is associated in such a manner that the higher the frequency of appearance of the combination of states of the operation switch group, the smaller the effective voltage of the pulse width modulation signal.

本開示によれば、簡易な構成で操作スイッチの状態を外部機器にゲートウェイできる。 According to the present disclosure, the state of an operation switch can be gatewayed to an external device with a simple configuration.

本開示の車両用計器の正面図。FIG. 1 is a front view of a vehicle instrument according to the present disclosure. 本開示の車両用計器のシステムブロック図。FIG. 2 is a system block diagram of a vehicle instrument according to the present disclosure. 本開示の車両用計器のスイッチ状態値と各スイッチの操作状態との対応関係を示す図。FIG. 3 is a diagram showing the correspondence between switch state values of the vehicle instrument of the present disclosure and operation states of each switch. 本開示の車両用計器のスイッチ状態値とパルス幅変調信号のＤｕｔｙ比との対応関係を示す図。FIG. 3 is a diagram showing a correspondence relationship between a switch state value of a vehicle instrument according to the present disclosure and a duty ratio of a pulse width modulation signal. 本開示の車両用計器の変形例におけるスイッチ状態値と各スイッチ状態との対応関係を示す図。FIG. 7 is a diagram showing the correspondence between switch state values and each switch state in a modified example of the vehicle instrument of the present disclosure.

本開示の車両用計器を添付図面を参照して説明する。 A vehicle meter according to the present disclosure will be described with reference to the accompanying drawings.

図１を参照する。車両用計器１は、車両の走行速度やエンジン回転数などの車両情報を目盛と指針によって表示する表示部１０を有する計器である。車両用計器１は、操作スイッチ群ＳＷと外部機器ＥＸＴと電気的に接続しており、操作スイッチ群ＳＷの状態を外部機器ＥＸＴに出力するゲートウェイ機能を有する。 Please refer to FIG. The vehicle instrument 1 is an instrument that has a display section 10 that displays vehicle information such as the vehicle's running speed and engine rotation speed using a scale and a pointer. The vehicle meter 1 is electrically connected to the operation switch group SW and the external device EXT, and has a gateway function to output the status of the operation switch group SW to the external device EXT.

図２を参照する。車両用計器１は、表示部１０を制御する制御部１１を有する。制御部１１は、入力部１１１、変換部１１２、出力部１１３を有する。 See FIG. 2. The vehicle instrument 1 includes a control section 11 that controls a display section 10 . The control section 11 includes an input section 111, a conversion section 112, and an output section 113.

操作スイッチ群ＳＷは、操作スイッチＳＷ１，ＳＷ２，ＳＷ３から構成される。操作スイッチＳＷ１は、表示切替操作スイッチである。操作スイッチＳＷ２は、決定操作スイッチである。操作スイッチＳＷ３は、キャンセル操作スイッチである。 The operation switch group SW is composed of operation switches SW1, SW2, and SW3. The operation switch SW1 is a display switching operation switch. The operation switch SW2 is a decision operation switch. The operation switch SW3 is a cancel operation switch.

制御部１１は、例えば、ＣＰＵと揮発性メモリＲＡＭと不揮発性メモリ（記憶部）ＲＯＭを有するマイクロコントローラ（集積制御回路）である。制御部１１は、車内ネットワークＬＡＮから入力された車両情報を表示部１０に表示させる。車内ネットワークＬＡＮは、例えば、ＣＡＮ（コントローラエリアネットワーク）であり、制御部１１は、ＣＡＮプロトコルで通信するためのＣＡＮコントローラを備えている。 The control unit 11 is, for example, a microcontroller (integrated control circuit) having a CPU, volatile memory RAM, and nonvolatile memory (storage unit) ROM. The control unit 11 causes the display unit 10 to display vehicle information input from the in-vehicle network LAN. The in-vehicle network LAN is, for example, a CAN (controller area network), and the control unit 11 includes a CAN controller for communicating using the CAN protocol.

また、制御部１１は、操作スイッチ群ＳＷの操作状態を外部機器ＥＸＴに出力するゲートウェイ機能を有する。このゲートウェイ機能は、入力部１１１、変換部１１２、出力部１１３により実現される。 Further, the control unit 11 has a gateway function that outputs the operation status of the operation switch group SW to the external device EXT. This gateway function is realized by an input section 111, a conversion section 112, and an output section 113.

入力部１１１は、操作スイッチ群ＳＷの操作状態を検出し、この検出した操作状態を変換部１１２に出力する。 The input section 111 detects the operation state of the operation switch group SW and outputs the detected operation state to the conversion section 112.

変換部１１２は、不揮発性メモリＲＯＭに予め記憶されている操作スイッチ群ＳＷの操作状態の組み合わせと、その組み合わせに対応するスイッチ状態値ＳＶを対応付ける変換テーブルに基づいて、入力部１１１から入力された操作スイッチ群ＳＷの操作状態を表すスイッチ状態値ＳＶに変換する。 The conversion unit 112 receives the input data from the input unit 111 based on a conversion table that associates combinations of operation states of the operation switch group SW and switch state values SV corresponding to the combinations, which are stored in advance in the nonvolatile memory ROM. It is converted into a switch state value SV representing the operating state of the operation switch group SW.

スイッチ状態値ＳＶは、操作スイッチ群ＳＷの操作状態の組み合わせを表す数値（あるいは、符号）である。 The switch state value SV is a numerical value (or code) representing a combination of operation states of the operation switch group SW.

具体的には、図３に示すように、２状態（ＯＦＦ状態／ＯＮ状態）を持つ３つの操作スイッチＳＷ１～ＳＷ３の重複のない８つの組み合わせの何れかを一意な数値０（０００ｂ）～７（１１１ｂ）で表したものである。 Specifically, as shown in FIG. 3, any of eight unique combinations of three operation switches SW1 to SW3 having two states (OFF state/ON state) are set to unique numerical values 0 (000b) to 7. (111b).

スイッチ状態値ＳＶは、出現頻度が高い組み合わせほど数値が低く、出現頻度が低い組み合わせほど数値が高くなるように定義されている。具体的には、操作スイッチ群ＳＷの操作状態の出現頻度では、ＯＦＦ状態がＯＮ状態よりも出現頻度が高いため、ＯＦＦ状態を含む組み合わせがＯＮ状態を含む組み合わせよりも数値が低くなるように定義されている。また、操作スイッチ群ＳＷのうち１つがＯＮ状態となる組み合わせが、同時に複数がＯＮ状態である組み合わせよりも出現頻度が高いため、ＯＮ状態の数が少ないほどスイッチ状態値ＳＶが小さくなるように定義されている。 The switch state value SV is defined such that the more frequently a combination appears, the lower the numerical value becomes, and the more frequently the combination appears, the higher the numerical value becomes. Specifically, regarding the appearance frequency of the operation states of the operation switch group SW, since the OFF state appears more frequently than the ON state, combinations including the OFF state are defined to have lower numerical values than combinations including the ON state. has been done. In addition, since combinations in which one of the operation switch groups SW is in the ON state occur more frequently than combinations in which multiple switches are in the ON state at the same time, the switch state value SV is defined to be smaller as the number of ON states is smaller. has been done.

出力部１１３は、スイッチ状態値ＳＶに応じたＤｕｔｙ比のパルス幅変調信号ＰＷＭの波形を外部機器ＥＸＴに出力する。本開示におけるＤｕｔｙ比とは、１周期の期間におけるＨｉ信号を出力している時間の比率（所謂、ＯＮ-Ｄｕｔｙ比）を表す。つまり、Ｄｕｔｙ比が高いほど出力される１周期当たりの合計電力が大きく、Ｄｕｔｙ比が低いほど１周期当たり合計電力が小さくなる。 The output unit 113 outputs the waveform of the pulse width modulation signal PWM having a duty ratio according to the switch state value SV to the external device EXT. The duty ratio in the present disclosure represents the ratio of time during which a Hi signal is output in one period (so-called ON-duty ratio). That is, the higher the Duty ratio is, the greater the total power output per cycle is, and the lower the Duty ratio is, the smaller the total power per cycle is.

図４にスイッチ状態値ＳＶとパルス幅変調信号ＰＷＭのＤｕｔｙ比との対応関係を示す。出力部１１３は、スイッチ状態値ＳＶをスイッチ状態値ＳＶの最大値で割った値を１００に乗じた値をＤｕｔｙ比として設定してパルス幅変調信号ＰＷＭを出力する。 FIG. 4 shows the correspondence between the switch state value SV and the duty ratio of the pulse width modulation signal PWM. The output unit 113 sets a value obtained by dividing the switch state value SV by the maximum value of the switch state value SV multiplied by 100 as the duty ratio, and outputs the pulse width modulation signal PWM.

具体的には、スイッチ状態値ＳＶが０（０００ｂ）のときはＤｕｔｙ比０％、スイッチ状態値ＳＶが１（００１ｂ）のときはＤｕｔｙ比が１４．３（Ｔｈ１）％、スイッチ状態値ＳＶが２（０１０ｂ）のときはＤｕｔｙ比が２８．６（Ｔｈ２）％、スイッチ状態値ＳＶが３（０１１ｂ）のときはＤｕｔｙ比が４２．９（Ｔｈ３）％、スイッチ状態値ＳＶが４（１００ｂ）のときはＤｕｔｙ比が５７．１（Ｔｈ４）％、スイッチ状態値が５（１０１ｂ）のときはＤｕｔｙ比が７１．４（Ｔｈ５）％、スイッチ状態値が６（１１０ｂ）のときはＤｕｔｙ比が８５．７（Ｔｈ６）％、スイッチ状態値が７（１１１ｂ）のときはＤｕｔｙ比が１００％として設定する。 Specifically, when the switch state value SV is 0 (000b), the Duty ratio is 0%, when the switch state value SV is 1 (001b), the Duty ratio is 14.3 (Th1)%, and when the switch state value SV is When the switch state value SV is 2 (010b), the duty ratio is 28.6 (Th2)%, when the switch state value SV is 3 (011b), the duty ratio is 42.9 (Th3)%, and the switch state value SV is 4 (100b). When the duty ratio is 57.1 (Th4)%, when the switch state value is 5 (101b), the duty ratio is 71.4 (Th5)%, and when the switch state value is 6 (110b), the duty ratio is When the switch state value is 85.7 (Th6)% and the switch state value is 7 (111b), the Duty ratio is set as 100%.

出力部１１３は、操作スイッチ群ＳＷの操作状態の組み合わせの出現頻度が高い組み合わせほど低いＤｕｔｙ比のパルス幅変調信号ＰＷＭを出力し、操作スイッチ群ＳＷの操作状態の組み合わせの出現頻度が低い組み合わせほど高いＤｕｔｙ比のパルス幅変調信号ＰＷＭを出力している。これにより、より少ない消費電力で操作スイッチ群ＳＷの状態をパルス幅変調信号ＰＷＭで外部機器ＥＸＴに出力できる。 The output unit 113 outputs a pulse width modulation signal PWM having a lower duty ratio as the combination of operation states of the operation switch group SW appears more frequently, and outputs a pulse width modulation signal PWM with a lower duty ratio as the combination of operation states of the operation switch group SW appears less frequently. A pulse width modulation signal PWM with a high duty ratio is output. Thereby, the state of the operation switch group SW can be output to the external device EXT as a pulse width modulation signal PWM with less power consumption.

以上のように、本開示の車両用計器１は、操作スイッチ群ＳＷの状態をパルス幅変調信号ＰＷＭで外部機器ＥＸＴに出力するように構成している。このように構成することで、外部機器ＥＸＴは、車両用計器１から操作スイッチ群ＳＷの状態を電圧値の変化のみで知ることができる。 As described above, the vehicle meter 1 of the present disclosure is configured to output the state of the operation switch group SW to the external device EXT as a pulse width modulation signal PWM. With this configuration, the external device EXT can know the state of the operation switch group SW from the vehicle instrument 1 only from changes in the voltage value.

本開示の車両用計器１は、以下のような変形をしても良い。 The vehicle meter 1 of the present disclosure may be modified in the following ways.

入力部１１１が検出する操作スイッチ群ＳＷの操作状態は、ＯＦＦ状態／ＯＮ状態の他に、故障状態（Ｆａｉｌｅｄ状態）を含むように構成してもよい。この場合、スイッチ状態値ＳＶは、図５に示すように、３状態（ＯＦＦ状態／ＯＮ状態／Ｆａｉｌｅｄ状態）を持つ３つの操作スイッチＳＷ１～ＳＷ３の重複のない２７つの組み合わせの何れかを一意な数値０（０００００ｂ）～２６（１１０１０ｂ）で表すことができる。 The operation state of the operation switch group SW detected by the input unit 111 may be configured to include a failure state (Failed state) in addition to the OFF state/ON state. In this case, as shown in FIG. 5, the switch state value SV uniquely selects any of 27 unique combinations of the three operation switches SW1 to SW3 having three states (OFF state/ON state/Failed state). It can be represented by numerical values 0 (00000b) to 26 (11010b).

故障状態を含む場合においては、ＯＦＦ状態やＯＮ状態よりも故障状態の出現頻度が低いため、故障状態を含む組み合わせが故障状態を含まない組み合わせよりもスイッチ状態値ＳＶの数値が高くなるように定義することが省電力の観点から好ましい。また、故障状態の数が多いほどスイッチ状態値ＳＶの値が高くなるように定義することが省電力の観点から好ましい。 When a fault state is included, the frequency of occurrence of the fault state is lower than that of an OFF state or an ON state, so combinations that include a fault state are defined to have higher switch state values SV than combinations that do not include a fault state. It is preferable to do so from the viewpoint of power saving. Further, from the viewpoint of power saving, it is preferable to define the switch state value SV so that the larger the number of failure states, the higher the value of the switch state value SV.

また、スイッチ状態値ＳＶは、操作スイッチ群のスイッチ種別の使用頻度が高いほどスイッチ状態値の数値が低くなるように定義することで省電力の観点から好ましい。 Further, it is preferable from the viewpoint of power saving that the switch state value SV is defined such that the higher the frequency of use of the switch type of the operation switch group, the lower the numerical value of the switch state value.

また、出力部１１３は、スイッチ状態値ＳＶの値に応じて種々のパルス変調方式によって出力波形を異ならせるものであってもよい。具体的には、パルス密度変調（ＰＤＭ）信号の密度や正負によりスイッチ状態値ＳＶを区別する、パルス位置変調（ＰＰＭ）信号のパルス位置で区別する、パルス符号変調（ＰＣＭ）信号により標本化された信号で区別する、ように構成してもよい。 Furthermore, the output section 113 may vary the output waveform using various pulse modulation methods depending on the value of the switch state value SV. Specifically, switch state values SV are distinguished by the density and positive/negative of a pulse density modulation (PDM) signal, distinguished by the pulse position of a pulse position modulation (PPM) signal, and sampled by a pulse code modulation (PCM) signal. It may also be configured such that the distinction is made using a signal.

また、不揮発性メモリＲＯＭに記憶される操作スイッチ群ＳＷの操作状態の組み合わせと、その組み合わせに対応するスイッチ状態値ＳＶを対応付ける変換テーブルは、社内ネットワークＬＡＮを介して差し替え可能に構成してもよい。 Further, the conversion table that associates the combination of operation states of the operation switch group SW stored in the nonvolatile memory ROM with the switch state value SV corresponding to the combination may be configured to be replaceable via the in-house network LAN. .

１ 車両用計器
１０ 表示部
１１ 制御部
１１１ 入力部
１１２ 変換部
１１３ 出力部
ＲＯＭ 不揮発性メモリ（記憶部）
ＳＶ スイッチ状態値
ＰＷＭ パルス幅変調信号
ＳＷ 操作スイッチ群
ＳＷ１ 操作スイッチ
ＳＷ２ 操作スイッチ
ＳＷ３ 操作スイッチ1 Vehicle instrument 10 Display section 11 Control section 111 Input section 112 Conversion section 113 Output section ROM Non-volatile memory (storage section)
SV Switch status value PWM Pulse width modulation signal SW Operation switch group SW1 Operation switch SW2 Operation switch SW3 Operation switch

Claims (3)

操作スイッチ群の状態を入力する入力部と、
前記入力部から入力された前記操作スイッチ群の状態に対応する実効電圧となるＤｕｔｙ比のパルス幅変調信号を出力する出力部と、
前記操作スイッチ群の状態と前記パルス幅変調信号の実効電圧との対応関係を表す変換テーブルを記憶する記憶部と、を備え、
前記変換テーブルは、前記操作スイッチ群の状態の組み合わせの出現頻度が高いほど前記パルス幅変調信号の実効電圧が小さくなるように対応付けられている、
車両用計器。 an input section for inputting the state of the operation switch group;
an output section that outputs a pulse width modulation signal with a duty ratio that is an effective voltage corresponding to the state of the operation switch group input from the input section;
a storage unit that stores a conversion table representing a correspondence relationship between the state of the operation switch group and the effective voltage of the pulse width modulation signal;
The conversion table is associated such that the higher the frequency of appearance of the combination of states of the operation switch group, the smaller the effective voltage of the pulse width modulation signal.
Vehicle instruments. 前記操作スイッチ群の状態は、ＯＦＦ状態、ＯＮ状態を含み、The state of the operation switch group includes an OFF state and an ON state,
前記変換テーブルは、前記操作スイッチ群の状態が全て前記ＯＦＦ状態であるときに前記パルス幅変調信号の実効電圧が最小になるように対応付けられている、The conversion table is associated so that the effective voltage of the pulse width modulation signal is minimized when all of the operation switches are in the OFF state.
請求項１に記載の車両用計器。The vehicle instrument according to claim 1. 前記操作スイッチ群の状態は、故障状態を含み、
前記変換テーブルは、前記操作スイッチ群のいずれかが前記故障状態であるときが前記操作スイッチ群の全てが前記故障状態でないときの状態よりも前記パルス幅変調信号の実効電圧が大きくなるように対応付けられている、
請求項２に記載の車両用計器。

 The state of the operation switch group is,lateincluding disability conditions;
The conversion table is configured such that when any one of the operation switch groups is in the failure state, the pulse width modulation signal is lower than when all of the operation switch groups are not in the failure state.effective voltageis mapped so that it becomes larger,
The vehicle instrument according to claim 2.
JP2020541272A 2018-09-06 2019-09-04 Vehicle instruments Active JP7355022B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2018167337 2018-09-06
JP2018167337 2018-09-06
PCT/JP2019/034813 WO2020050323A1 (en) 2018-09-06 2019-09-04 Vehicle instrument

Publications (2)

Publication Number Publication Date
JPWO2020050323A1 JPWO2020050323A1 (en) 2021-09-02
JP7355022B2 true JP7355022B2 (en) 2023-10-03

Family

ID=69722378

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2020541272A Active JP7355022B2 (en) 2018-09-06 2019-09-04 Vehicle instruments

Country Status (2)

Country Link
JP (1) JP7355022B2 (en)
WO (1) WO2020050323A1 (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015001515A (en) 2013-06-18 2015-01-05 日本精機株式会社 Vehicular display apparatus

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58219858A (en) * 1982-06-16 1983-12-21 Tokai Rika Co Ltd Method for converting and transmitting programmable parallel data
JPH09246973A (en) * 1996-03-11 1997-09-19 N T T Data Tsushin Kk Data communication method and data modulation and demodulation system
JPH11283456A (en) * 1998-03-30 1999-10-15 Harness Syst Tech Res Ltd Switch, information detection device having the same, and connected state detection device for connector

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015001515A (en) 2013-06-18 2015-01-05 日本精機株式会社 Vehicular display apparatus

Also Published As

Publication number Publication date
JPWO2020050323A1 (en) 2021-09-02
WO2020050323A1 (en) 2020-03-12

Similar Documents

Publication Publication Date Title
CN101931355B (en) Motor drive device and electric equipment using this
JP3763415B1 (en) Average current detection circuit
JP5111791B2 (en) Low voltage detection reset circuit
KR20070017501A (en) Method and system for communicating filter compensation coefficients for a digital for a digital power control system
JP3126735U (en) Motor control circuit
JPH11103586A (en) Apparatus and method for increasing minuteness upon conversion of digital data into full-bridge output stage driving pwm signal
JP7355022B2 (en) Vehicle instruments
US6927715B2 (en) Device and control structure of multi-level pulse width modulation
JP4178946B2 (en) Inverter device and motor current detection method
JP7482614B2 (en) Overcurrent detection device and motor control device
JP4797456B2 (en) Inverter device
WO2023282133A1 (en) Motor drive control device
JPH11308881A (en) Over-voltage control apparatus
JP2006024975A (en) A/d converter lsi
JP2000111589A (en) Semiconductor integrated circuit
JP2006288148A (en) Excess current protection circuit
JP3309936B2 (en) Voltage generator
JPH1055330A (en) Slot address circuit
JP4894996B2 (en) Field indicator
KR20020087732A (en) Steering wheel audio remote control circuit
RU12305U1 (en) DEVICE FOR AUTONOMOUS INVERTER CONTROL
CN118117941A (en) Bridge drive circuit control method and device, electronic equipment and storage medium
JP2786031B2 (en) A / D converter
JPH07152990A (en) Two-wire transmission equipment
JPH05242390A (en) Home security system

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20220715

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20230509

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20230607

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20230822

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20230904

R150 Certificate of patent or registration of utility model

Ref document number: 7355022

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150