WO2012070329A1 - Vehicle gauge - Google Patents
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- WO2012070329A1 WO2012070329A1 PCT/JP2011/073784 JP2011073784W WO2012070329A1 WO 2012070329 A1 WO2012070329 A1 WO 2012070329A1 JP 2011073784 W JP2011073784 W JP 2011073784W WO 2012070329 A1 WO2012070329 A1 WO 2012070329A1
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- vehicle
- control means
- power
- sensor
- display
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D3/00—Indicating or recording apparatus with provision for the special purposes referred to in the subgroups
- G01D3/08—Indicating or recording apparatus with provision for the special purposes referred to in the subgroups with provision for safeguarding the apparatus, e.g. against abnormal operation, against breakdown
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D7/00—Indicating measured values
Definitions
- the present invention relates to a vehicle meter provided with a control means for controlling a display means based on information from a sensor mounted on a vehicle.
- Patent Document 1 a conventional instrument for displaying vehicle information is disclosed in Patent Document 1. These vehicle meters are supplied with power from a battery mounted on the vehicle and perform various displays using this power as a drive source. This battery is also used as a drive source in various sensors mounted on the vehicle.
- this power source is not dedicated to the sensor input circuit but is also used as a power source for other circuits for general purposes, the power supply voltage fluctuates (mainly decreases) depending on the load state of the other circuits and the sensor input circuit. Therefore, there is a problem that information obtained from the input circuit fluctuates even when the sensor is in the same state, and information cannot be obtained accurately.
- an object of the present invention is to provide a vehicle instrument that can display accurate vehicle information without being affected by fluctuations in power supply voltage due to a load state.
- the vehicle instrument of the present invention includes a display means, a control means for controlling the display means to display vehicle information based on a detection signal from a sensor mounted on the vehicle side, the control means, and the display means.
- the signal input port is formed by inputting a potential between the sensor and the power output port.
- the control means includes a power input port for inputting an output from the power output port, and calculates the vehicle information based on a potential of the power input port and a detection signal to the signal input port. It is characterized by becoming.
- control means branches the wiring between the power output port and the sensor and supplies power to a plurality of sensors.
- the senor is characterized in that a detection signal having a current value corresponding to a vehicle state is output to the signal input port of the control means.
- the present invention relates to a vehicle instrument that includes display means for displaying based on information from a sensor mounted on a vehicle side, and controls the display means by a control means, and is not affected by fluctuations in power supply voltage due to load conditions. Accurate vehicle information can be displayed.
- the vehicle meter A includes a control unit 1, a display unit 2, and a power supply circuit 3.
- the vehicle meter A is connected to various sensors 4 on the vehicle side, a battery 5, an ignition switch (IG-SW), and the like.
- a microcomputer can be applied to the control means 1, and signals from various sensors 4 are input by wiring, and from various signals of the vehicle such as a traveling signal and an engine speed signal corresponding to the traveling speed of the vehicle, an ignition switch The starting signal is input, a control signal is generated in accordance with these signals, and this control signal is output to the display means 2.
- the control means 1 stores a CPU for performing arithmetic processing based on various input signals, a readable / rewritable RAM for temporarily storing arithmetic processing results and the like in the CPU, a control program and control data.
- a storage unit including a ROM, and an input / output interface connected by a bus for exchanging the various signals, control signals, clock signals, and the like.
- the control means 1 is connected to various sensors 4 to be described later, or connected to a communication cable (not shown) for inputting vehicle information obtained from other than the various sensors 4, and obtains information such as the engine speed.
- the control means 1 also has a power output port 11 for supplying power to the various sensors 4 and a signal input port 12 for inputting a potential between the various sensors 4 and the power output port 11 as a detection signal from the various sensors 4. , 13 and a power input port for feeding back and inputting the output from the power output port 11.
- the display means 2 is an interface for informing the vehicle user of vehicle information based on a control signal from the control means 1 in the vehicle meter A provided at a position where the vehicle user can visually recognize the vehicle. It is.
- the display means 2 applies a liquid crystal display panel 21 including a drive driver and a backlight 22 that transmits and illuminates the liquid crystal display panel 21, and displays a total accumulated travel distance display, a section travel distance display, a vehicle outside temperature, The fuel consumption is switched and displayed with gauges or numerical values.
- the display means 2 only needs to be display-controlled by the control means 1.
- the display means 2 is based on a control signal using a warning light or indicator that lights up using a light source such as a light-emitting diode, or a motor as a drive source.
- a warning light or indicator that lights up using a light source such as a light-emitting diode, or a motor as a drive source.
- a so-called analog instrument display that provides a rotating pointer and an index such as a scale or a numerical value that is indicated by the pointer, and makes the measured value read by contrast. It may be displayed on a panel in a pseudo manner.
- a constant voltage circuit including a regulator such as a DC-DC converter can be applied as the power supply circuit 3.
- the power supply voltage from the battery 5 mounted on the vehicle can be input, and the control means 1 and the display means 2 can be driven. This is converted into a predetermined voltage and supplied.
- the power supply circuit 3 steps down the power supply voltage of about 12V from the battery 5 to about 5V (predetermined voltage).
- the control means 1, display means 2, and power supply circuit 3 of the vehicle meter A described above are housed and held in the same casing, and are connected to various sensors 4 and the battery 5 through wiring.
- the various sensors 4 are provided outside the vehicle meter A and are sensors for detecting a vehicle state, for example, a liquid level sensor including a variable resistance element and a float for measuring the remaining amount of fuel in the fuel tank. 41, a temperature sensor 42 including a thermistor that detects oil temperature, water temperature, outside air temperature, and the like, a speed sensor (not shown) that outputs a pulse signal according to the rotation of the axle, and the like can be applied.
- the power from the power output port 11 of the control means 1 is supplied to the various sensors 4 through the resistance element R, and the control means 1 is connected to the various sensors 4.
- Wiring to the power output port 11 (specifically, wiring between the various sensors 4 and the resistance element R) branches in the vehicle meter A, and the signal input port 12 uses the potential at this branching point as a detection signal. , 13 are used for input.
- the control unit 1 supplies power to the plurality of sensors 41 and 42 from the power output port 11 and inputs the power output from the power output port 11 through the power input port 14.
- the voltage value of the power supply can be read. Therefore, the various sensors 4 can output detection signals to the control means 1 while receiving power supply without providing a dedicated constant voltage circuit or power supply / stop circuit.
- the control means 1 calculates vehicle information in consideration of the potential fluctuation of the signal input ports 12 and 13 based on the load fluctuation of the display means 2, the allowable error of the power supply circuit 3, and the load state of the other sensor 4. Since processing and calculation for display control can be performed based on the vehicle information, accurate vehicle information can be displayed without being affected by fluctuations in the power supply voltage due to a load state or the like.
- the control means 1 does not simply calculate the measurement value based on the input of the detection signal, but compares the potential of the power input port 14 with the potential (detection signal) of the signal input ports 12 and 13. Thus, the resistance value (current consumption value) of the various sensors 4 can be calculated, and the measured value based on this value can be used for the display of the display means 2.
- Such a vehicle meter A includes a display means 2, a control means 1 for controlling the display means 2 so as to display vehicle information based on a detection signal from a sensor mounted on the vehicle side, a control means 1 and a display.
- the power supply circuit 3 for supplying a predetermined voltage can supply a stable driving voltage for the normal operation of the control means and various sensors directly or via the control means 1 and can therefore display accurate vehicle information. It becomes an instrument for vehicles.
- the signal input ports 12 and 13 are configured by inputting the potential between the various sensors 4 and the power output port 11, thereby reducing the wiring between the control means 1 of the vehicle meter A and the various sensors and having a simple configuration. Thus, it is possible to achieve both power supply to the various sensors 4 and input of detection signals from the various sensors 4.
- control means 1 is provided with a power input port 14 for inputting an output from the power output port 11, and compares the potential of the power input port 14 with detection signals to the signal input ports 12 and 13, By calculating the vehicle information and using it for display control on the display means 2, it is possible to calculate and display an accurate measurement value without affecting load fluctuations. For example, even when the output fluctuation of the power output port 11 of the control means 1 is caused by the fluctuation of the load outside the display means 2 or the vehicle instrument A, the output fluctuation and the detection signals from the various sensors 4 are used. By comparing, accurate vehicle information can be obtained.
- control means 1 can reduce the number of ports used by the control means 1 by branching the wiring between the power output port 11 and the various sensors 4 and supplying power to the plurality of sensors 41 and 42. . Further, even if the various sensors 4 are configured to output a detection signal of a current value according to the vehicle state to the signal input ports 12 and 13 of the control means 1, the potential of the power input port 14 is taken into consideration. By reading the detection signal, accurate vehicle information can be obtained.
- the vehicular instrument of the present invention has been described as an example in the configuration of the above-described embodiment, the present invention is not limited to this, and other configurations depart from the gist of the present invention. It goes without saying that various improvements and design changes can be made without departing from the scope.
- the type and number of sensors that receive power supply from the control unit 1 depend on the load of the sensor and the allowable output capacity of the control unit 1, and if necessary, the same power output port as in the above-described embodiment And the power input port may be increased as a pair.
- the control means 1 may be connected to various switches in parallel with the above-described sensor.
- the present invention relates to a vehicle instrument, and can be applied, for example, as a vehicle instrument mounted on a moving body equipped with an automobile, a motorcycle, an agricultural machine, or a construction machine.
Abstract
Provided is a vehicle gauge that can display accurate vehicle information without being impacted by fluctuations in power-supply voltage due to load conditions. A vehicle gauge (A) comprises a display means (2), a control means (1) for controlling the display means (2) so that the display means displays vehicle information on the basis of a signal detected by a sensor mounted on a side of the vehicle, and a power circuit (3) that supplies a specified voltage to the control means (1) and the display means (2). The control means (1) is provided with a power output port (11) that supplies power to various sensors (4), and signal input ports (12, 13) that receive the signals detected by the various sensors (4).
Description
本発明は、車両に搭載されるセンサからの情報に基づいて表示手段を制御する制御手段を備えた車両用計器に関する。
The present invention relates to a vehicle meter provided with a control means for controlling a display means based on information from a sensor mounted on a vehicle.
従来の車両情報を表示する車両用計器として、例えば、特許文献１に開示されるようなものがある。これらの車両用計器は、車両に搭載されるバッテリからの電源が供給され、この電源を駆動源として各種表示を行っている。また、車両に搭載された各種センサにおいてもこのバッテリを駆動源としている。
For example, a conventional instrument for displaying vehicle information is disclosed in Patent Document 1. These vehicle meters are supplied with power from a battery mounted on the vehicle and perform various displays using this power as a drive source. This battery is also used as a drive source in various sensors mounted on the vehicle.
しかしながら、上述の車両用計器は、この電源はセンサ入力回路専用ではなく汎用的に他回路の電源としても使用する為、他回路やセンサ入力回路の負荷状態によって電源電圧が変動（主に低下）する為にセンサが同じ状態にも関わらず入力回路から得られる情報が変動し、正確に情報を得られないといった問題があった。
However, in the above-mentioned vehicle instrument, since this power source is not dedicated to the sensor input circuit but is also used as a power source for other circuits for general purposes, the power supply voltage fluctuates (mainly decreases) depending on the load state of the other circuits and the sensor input circuit. Therefore, there is a problem that information obtained from the input circuit fluctuates even when the sensor is in the same state, and information cannot be obtained accurately.
そこで本発明の目的とするところは、負荷状態による電源電圧の変動に影響を受けず、正確な車両情報を表示できる車両用計器を提供することにある。
Therefore, an object of the present invention is to provide a vehicle instrument that can display accurate vehicle information without being affected by fluctuations in power supply voltage due to a load state.
本発明の車両用計器は、表示手段と、車両側に搭載されるセンサからの検出信号に基づいて車両情報を表示するように前記表示手段を制御する制御手段と、前記制御手段や前記表示手段に所定電圧を供給する電源回路と、を備えた車両用計器であって、前記制御手段は、前記センサへの電源供給を行う電源出力ポートと、前記センサからの検出信号を入力する信号入力ポートと、を設けてなることを特徴とする。
The vehicle instrument of the present invention includes a display means, a control means for controlling the display means to display vehicle information based on a detection signal from a sensor mounted on the vehicle side, the control means, and the display means. A power supply circuit for supplying a predetermined voltage to the vehicle, wherein the control means is a power supply output port for supplying power to the sensor, and a signal input port for inputting a detection signal from the sensor. And is provided.
また、前記信号入力ポートは、前記センサと前記電源出力ポートとの間の電位を入力してなることを特徴とする。
Further, the signal input port is formed by inputting a potential between the sensor and the power output port.
また、前記制御手段は、前記電源出力ポートからの出力を入力する電源入力ポートを設けてなり、前記電源入力ポートの電位と、前記信号入力ポートへの検出信号とに基づいて前記車両情報を算出してなることを特徴とする。
The control means includes a power input port for inputting an output from the power output port, and calculates the vehicle information based on a potential of the power input port and a detection signal to the signal input port. It is characterized by becoming.
また、前記制御手段は、前記電源出力ポートと前記センサとの間の配線を分岐し、複数のセンサへ電源供給してなることを特徴とする。
Further, the control means branches the wiring between the power output port and the sensor and supplies power to a plurality of sensors.
また、前記センサは、車両状態に応じた電流値の検出信号を前記制御手段の前記信号入力ポートへ出力してなることを特徴とする。
Further, the sensor is characterized in that a detection signal having a current value corresponding to a vehicle state is output to the signal input port of the control means.
本発明は、車両側に搭載されるセンサからの情報に基づいて表示する表示手段を備え、前記表示手段を制御手段によって制御する車両用計器に関し、負荷状態による電源電圧の変動に影響を受けず、正確な車両情報を表示できる。
The present invention relates to a vehicle instrument that includes display means for displaying based on information from a sensor mounted on a vehicle side, and controls the display means by a control means, and is not affected by fluctuations in power supply voltage due to load conditions. Accurate vehicle information can be displayed.
以下、本発明が適用された実施の形態について添付図面を用いて説明する。
Hereinafter, an embodiment to which the present invention is applied will be described with reference to the accompanying drawings.
本発明の車両用計器を、二輪自動車に搭載されたものについて実施例として説明する。図１に示すように、車両用計器Ａは、制御手段１と、表示手段２と、電源回路３と、によって構成される。また、車両用計器Ａは、車両側の各種センサ４やバッテリ５、イグニションスイッチ（ＩＧ－ＳＷ）などと接続している。
An example in which the vehicle instrument of the present invention is mounted on a two-wheeled vehicle will be described. As shown in FIG. 1, the vehicle meter A includes a control unit 1, a display unit 2, and a power supply circuit 3. The vehicle meter A is connected to various sensors 4 on the vehicle side, a battery 5, an ignition switch (IG-SW), and the like.
制御手段１は、例えば、マイクロコンピュータを適用でき、配線によって、各種センサ４などの信号を入力し、車両の走行速度に応じた走行信号やエンジン回転数信号など車両の各種信号や、イグニションスイッチからの起点信号を入力し、これら信号に応じて制御信号を生成するとともに、この制御信号を表示手段２へ出力する。また、制御手段１は、入力する各種信号に基づいて演算処理するためのＣＰＵと、このＣＰＵにおける演算処理結果等を一時的に格納する読出し及び書換え可能なＲＡＭや、制御プログラムや制御データを格納したＲＯＭから構成される記憶部と、前記各種信号や制御信号、クロック信号などをやり取りするためにバス接続された入出力インターフェースと、を備えている。
For example, a microcomputer can be applied to the control means 1, and signals from various sensors 4 are input by wiring, and from various signals of the vehicle such as a traveling signal and an engine speed signal corresponding to the traveling speed of the vehicle, an ignition switch The starting signal is input, a control signal is generated in accordance with these signals, and this control signal is output to the display means 2. The control means 1 stores a CPU for performing arithmetic processing based on various input signals, a readable / rewritable RAM for temporarily storing arithmetic processing results and the like in the CPU, a control program and control data. A storage unit including a ROM, and an input / output interface connected by a bus for exchanging the various signals, control signals, clock signals, and the like.
制御手段１は、後述する各種センサ４との接続や、各種センサ４以外から得られる車両情報を入力する図示しない通信ケーブルと接続されており、エンジン回転数などの情報を得ている。また、制御手段１は、各種センサ４への電源供給を行う電源出力ポート１１と、各種センサ４と電源出力ポート１１との間の電位を各種センサ４からの検出信号として入力する信号入力ポート１２，１３と、電源出力ポート１１からの出力をフィードバックして入力する電源入力ポートを設けている。
The control means 1 is connected to various sensors 4 to be described later, or connected to a communication cable (not shown) for inputting vehicle information obtained from other than the various sensors 4, and obtains information such as the engine speed. The control means 1 also has a power output port 11 for supplying power to the various sensors 4 and a signal input port 12 for inputting a potential between the various sensors 4 and the power output port 11 as a detection signal from the various sensors 4. , 13 and a power input port for feeding back and inputting the output from the power output port 11.
表示手段２は、車両利用者が乗車状態にて視認可能な位置に設けられる車両用計器Ａ内において、制御手段１からの制御信号に基づいて、車両情報を車両利用者に報知するためのインターフェースである。表示手段２は、この場合、駆動ドライバを含む液晶表示パネル２１や、液晶表示パネル２１を透過照明するバックライト２２を適用してなり、総積算走行距離表示や区間走行距離表示、車両外気温、燃費などをゲージや数値などで切換え表示するものである。
The display means 2 is an interface for informing the vehicle user of vehicle information based on a control signal from the control means 1 in the vehicle meter A provided at a position where the vehicle user can visually recognize the vehicle. It is. In this case, the display means 2 applies a liquid crystal display panel 21 including a drive driver and a backlight 22 that transmits and illuminates the liquid crystal display panel 21, and displays a total accumulated travel distance display, a section travel distance display, a vehicle outside temperature, The fuel consumption is switched and displayed with gauges or numerical values.
なお、表示手段２は、制御手段１によって表示制御されるものであればよく、例えば、発光ダイオードなどの光源を用いて点灯表示する警告灯やインジケータ、またはモータを駆動源として制御信号に基づいて回動する指針と、この指針の指示対象となる目盛りや数値等の指標と、を設けて、計測値を対比判読させる所謂アナログ計器表示を行うものであってもよいし、これらアナログ計器を液晶パネルに疑似表示するものであってもよい。
The display means 2 only needs to be display-controlled by the control means 1. For example, the display means 2 is based on a control signal using a warning light or indicator that lights up using a light source such as a light-emitting diode, or a motor as a drive source. There may be a so-called analog instrument display that provides a rotating pointer and an index such as a scale or a numerical value that is indicated by the pointer, and makes the measured value read by contrast. It may be displayed on a panel in a pseudo manner.
電源回路３は、ＤＣ－ＤＣコンバータなどのレギュレータを含む定電圧回路を適用でき、例えば、車両に搭載されたバッテリ５からの電源電圧を入力し、制御手段１や表示手段２がそれぞれ駆動可能な所定電圧に変換し供給するものである。この場合、電源回路３は、バッテリ５からの約１２Ｖの電源電圧を約５Ｖ（所定電圧）に降圧している。
As the power supply circuit 3, a constant voltage circuit including a regulator such as a DC-DC converter can be applied. For example, the power supply voltage from the battery 5 mounted on the vehicle can be input, and the control means 1 and the display means 2 can be driven. This is converted into a predetermined voltage and supplied. In this case, the power supply circuit 3 steps down the power supply voltage of about 12V from the battery 5 to about 5V (predetermined voltage).
上述した車両用計器Ａの制御手段１、表示手段２、電源回路３は、同一の筐体内に収納保持され、配線を介して、各種センサ４やバッテリ５と接続されている。
The control means 1, display means 2, and power supply circuit 3 of the vehicle meter A described above are housed and held in the same casing, and are connected to various sensors 4 and the battery 5 through wiring.
各種センサ４は、車両用計器Ａ外に設けられ、車両状態を検出するためのセンサであって、例えば、燃料タンク内の燃料残量を計測するための可変抵抗素子やフロートを含む液面センサ４１や、油温や水温、外気温度などを検出するサーミスタを含む温度センサ４２、車軸の回転に応じたパルス信号を出力する速度センサ（図示しない）などを適用できる。
The various sensors 4 are provided outside the vehicle meter A and are sensors for detecting a vehicle state, for example, a liquid level sensor including a variable resistance element and a float for measuring the remaining amount of fuel in the fuel tank. 41, a temperature sensor 42 including a thermistor that detects oil temperature, water temperature, outside air temperature, and the like, a speed sensor (not shown) that outputs a pulse signal according to the rotation of the axle, and the like can be applied.
また、各種センサ４と制御手段１との配線において、制御手段１の電源出力ポート１１からの電源が抵抗素子Ｒを介して各種センサ４へ供給されるとともに、制御手段１は、各種センサ４と電源出力ポート１１との間の配線（詳しくは、各種センサ４と抵抗素子Ｒとの間の配線）が車両用計器Ａ内で分岐して、この分岐点における電位を検出信号として信号入力ポート１２，１３を用いて入力している。
In the wiring between the various sensors 4 and the control means 1, the power from the power output port 11 of the control means 1 is supplied to the various sensors 4 through the resistance element R, and the control means 1 is connected to the various sensors 4. Wiring to the power output port 11 (specifically, wiring between the various sensors 4 and the resistance element R) branches in the vehicle meter A, and the signal input port 12 uses the potential at this branching point as a detection signal. , 13 are used for input.
また、この場合、制御手段１は、電源出力ポート１１からの複数のセンサ４１，４２へ電源供給しているとともに、電源出力ポート１１から出力された電源を電源入力ポート１４にて入力し、前記電源の電圧値を読み取ることができる。したがって、各種センサ４は、専用の定電圧回路や電源の供給／停止回路を設けることなく、電源供給を受けつつ制御手段１へ検出信号を出力できる。また、制御手段１は、表示手段２の負荷変動や、電源回路３の許容誤差、他方のセンサ４の負荷状態に基づく、信号入力ポート１２，１３の電位変動分を考慮して車両情報を算出処理し、この車両情報に基づいて表示制御するための演算を行うことができるため、負荷状態などによる電源電圧の変動に対して影響を受けず、正確な車両情報を表示できる。
In this case, the control unit 1 supplies power to the plurality of sensors 41 and 42 from the power output port 11 and inputs the power output from the power output port 11 through the power input port 14. The voltage value of the power supply can be read. Therefore, the various sensors 4 can output detection signals to the control means 1 while receiving power supply without providing a dedicated constant voltage circuit or power supply / stop circuit. Further, the control means 1 calculates vehicle information in consideration of the potential fluctuation of the signal input ports 12 and 13 based on the load fluctuation of the display means 2, the allowable error of the power supply circuit 3, and the load state of the other sensor 4. Since processing and calculation for display control can be performed based on the vehicle information, accurate vehicle information can be displayed without being affected by fluctuations in the power supply voltage due to a load state or the like.
なお、制御手段１は、単純に検出信号の入力に基づいて計測値を算出するのではなく、電源入力ポート１４の電位と、信号入力ポート１２，１３の電位（検出信号）とを比較することによって、各種センサ４の抵抗値（消費電流値）を算出し、この値に基づく計測値を表示手段２の表示に利用することができる。
The control means 1 does not simply calculate the measurement value based on the input of the detection signal, but compares the potential of the power input port 14 with the potential (detection signal) of the signal input ports 12 and 13. Thus, the resistance value (current consumption value) of the various sensors 4 can be calculated, and the measured value based on this value can be used for the display of the display means 2.
斯かる車両用計器Ａは、表示手段２と、車両側に搭載されるセンサからの検出信号に基づいて車両情報を表示するように表示手段２を制御する制御手段１と、制御手段１や表示手段１に所定電圧を供給する電源回路３と、を備え、制御手段１は、各種センサ４への電源供給を行う電源出力ポート１１と、各種センサ４からの検出信号を入力する信号入力ポート１２，１３と、を設けてなる。
Such a vehicle meter A includes a display means 2, a control means 1 for controlling the display means 2 so as to display vehicle information based on a detection signal from a sensor mounted on the vehicle side, a control means 1 and a display. A power supply circuit 3 for supplying a predetermined voltage to the means 1, and the control means 1 includes a power output port 11 for supplying power to the various sensors 4 and a signal input port 12 for inputting detection signals from the various sensors 4. , 13 are provided.
したがって、所定電圧を供給する電源回路３は、直接、または制御手段１を介して、制御手段や各種センサが正常に作動するための安定した駆動電圧を供給できるため、正確な車両情報を表示できる車両用計器となる。
Therefore, the power supply circuit 3 for supplying a predetermined voltage can supply a stable driving voltage for the normal operation of the control means and various sensors directly or via the control means 1 and can therefore display accurate vehicle information. It becomes an instrument for vehicles.
信号入力ポート１２，１３は、各種センサ４と電源出力ポート１１との間の電位を入力してなることによって、車両用計器Ａの制御手段１と各種センサとの配線を少なくでき、簡単な構成にて、各種センサ４への電源供給と各種センサ４からの検出信号の入力を両立することができる。
The signal input ports 12 and 13 are configured by inputting the potential between the various sensors 4 and the power output port 11, thereby reducing the wiring between the control means 1 of the vehicle meter A and the various sensors and having a simple configuration. Thus, it is possible to achieve both power supply to the various sensors 4 and input of detection signals from the various sensors 4.
また、制御手段１は、電源出力ポート１１からの出力を入力する電源入力ポート１４を設けてなり、電源入力ポート１４の電位と、信号入力ポート１２，１３への検出信号とを比較して、車両情報を算出し、表示手段２への表示制御に利用してなることによって、負荷の変動などに影響しないで、正確な計測値を算出し、表示することができる。例えば、表示手段２や車両用計器Ａ外の負荷の変動によって、制御手段１の電源出力ポート１１の出力変動が生じた場合であっても、この出力変動と各種センサ４からの検出信号とを比較することによって、正確な車両情報を得ることができる。
Further, the control means 1 is provided with a power input port 14 for inputting an output from the power output port 11, and compares the potential of the power input port 14 with detection signals to the signal input ports 12 and 13, By calculating the vehicle information and using it for display control on the display means 2, it is possible to calculate and display an accurate measurement value without affecting load fluctuations. For example, even when the output fluctuation of the power output port 11 of the control means 1 is caused by the fluctuation of the load outside the display means 2 or the vehicle instrument A, the output fluctuation and the detection signals from the various sensors 4 are used. By comparing, accurate vehicle information can be obtained.
また、制御手段１は、電源出力ポート１１と各種センサ４との間の配線を分岐し、複数のセンサ４１，４２へ電源供給してなることによって、制御手段１の使用するポート数を低減できる。また、各種センサ４が、車両状態に応じた電流値の検出信号を制御手段１の信号入力ポート１２，１３へ出力してなる構成であっても、電源入力ポート１４の電位を考慮して、検出信号を読み取ることによって、正確な車両情報を得ることができる。
Moreover, the control means 1 can reduce the number of ports used by the control means 1 by branching the wiring between the power output port 11 and the various sensors 4 and supplying power to the plurality of sensors 41 and 42. . Further, even if the various sensors 4 are configured to output a detection signal of a current value according to the vehicle state to the signal input ports 12 and 13 of the control means 1, the potential of the power input port 14 is taken into consideration. By reading the detection signal, accurate vehicle information can be obtained.
なお、本発明の車両用計器を上述した実施の形態の構成にて例に挙げて説明したが、本発明はこれに限定されるものではなく、他の構成においても、本発明の要旨を逸脱しない範囲において種々の改良、並びに設計の変更が可能なことは勿論である。例えば、制御手段１からの電源供給を受けるセンサの種類や数は、センサの負荷と制御手段１の許容出力容量とに依存し、必要に応じて、上述した実施の形態と同様の電源出力ポートと電源入力ポートとを一対にして増やしても良い。また、制御手段１は、上述したセンサと並列して、各種スイッチを接続することも考えられる。
Although the vehicular instrument of the present invention has been described as an example in the configuration of the above-described embodiment, the present invention is not limited to this, and other configurations depart from the gist of the present invention. It goes without saying that various improvements and design changes can be made without departing from the scope. For example, the type and number of sensors that receive power supply from the control unit 1 depend on the load of the sensor and the allowable output capacity of the control unit 1, and if necessary, the same power output port as in the above-described embodiment And the power input port may be increased as a pair. Further, the control means 1 may be connected to various switches in parallel with the above-described sensor.
本発明は、車両用計器に関し、例えば、自動車やオートバイ、あるいは農業機械や建設機械を備えた移動体に搭載される車両用計器として適用できる。
The present invention relates to a vehicle instrument, and can be applied, for example, as a vehicle instrument mounted on a moving body equipped with an automobile, a motorcycle, an agricultural machine, or a construction machine.
１ 制御手段
１１ 電源出力ポート
１２，１３ 信号入力ポート
１４ 電源入力ポート
２ 表示手段
３ 電源回路
４ 各種センサ（センサ）
Ａ 車両用計器 DESCRIPTION OFSYMBOLS 1 Control means 11 Power supply output ports 12 and 13 Signal input port 14 Power supply input port 2 Display means 3 Power supply circuit 4 Various sensors (sensors)
A Vehicle instrument
１１ 電源出力ポート
１２，１３ 信号入力ポート
１４ 電源入力ポート
２ 表示手段
３ 電源回路
４ 各種センサ（センサ）
Ａ 車両用計器 DESCRIPTION OF
A Vehicle instrument
Claims (5)
- 表示手段と、
車両側に搭載されるセンサからの検出信号に基づいて車両情報を表示するように前記表示手段を制御する制御手段と、前記制御手段や前記表示手段に所定電圧を供給する電源回路と、を備えた車両用計器であって、
前記制御手段は、前記センサへの電源供給を行う電源出力ポートと、前記センサからの検出信号を入力する信号入力ポートと、を設けてなることを特徴とする車両用計器。 Display means;
Control means for controlling the display means to display vehicle information based on a detection signal from a sensor mounted on the vehicle side; and a power supply circuit for supplying a predetermined voltage to the control means and the display means. Vehicle instrument,
The vehicular instrument characterized in that the control means includes a power output port for supplying power to the sensor and a signal input port for inputting a detection signal from the sensor. - 前記信号入力ポートは、前記センサと前記電源出力ポートとの間の電位を入力してなることを特徴とする請求項１に記載の車両用計器。 The vehicle instrument according to claim 1, wherein the signal input port is input with a potential between the sensor and the power output port.
- 前記制御手段は、前記電源出力ポートからの出力を入力する電源入力ポートを設けてなり、前記電源入力ポートの電位と、前記信号入力ポートへの検出信号とに基づいて前記車両情報を算出してなることを特徴とする請求項１または請求項２に記載の車両用計器。 The control means includes a power input port for inputting an output from the power output port, and calculates the vehicle information based on a potential of the power input port and a detection signal to the signal input port. The vehicular instrument according to claim 1 or 2, wherein
- 前記制御手段は、前記電源出力ポートと前記センサとの間の配線を分岐し、複数のセンサへ電源供給してなることを特徴とする請求項１乃至請求項３の何れかに記載の車両用計器。 4. The vehicle according to claim 1, wherein the control unit branches a wiring between the power output port and the sensor and supplies power to a plurality of sensors. 5. Instrument.
- 前記センサは、車両状態に応じた電流値の検出信号を前記制御手段の前記信号入力ポートへ出力してなることを特徴とする請求項１乃至請求項４の何れかに記載の車両用計器。 5. The vehicle instrument according to claim 1, wherein the sensor outputs a detection signal having a current value corresponding to a vehicle state to the signal input port of the control means.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010261895A JP2012111350A (en) | 2010-11-25 | 2010-11-25 | Vehicle instrument |
| JP2010-261895 | 2010-11-25 |
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| Publication Number | Publication Date |
|---|---|
| WO2012070329A1 true WO2012070329A1 (en) | 2012-05-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2011/073784 WO2012070329A1 (en) | 2010-11-25 | 2011-10-17 | Vehicle gauge |
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| Country | Link |
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| JP (1) | JP2012111350A (en) |
| WO (1) | WO2012070329A1 (en) |
Families Citing this family (1)
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|---|---|---|---|---|
| JP6166586B2 (en) * | 2013-05-17 | 2017-07-19 | 日本特殊陶業株式会社 | In-vehicle sensor and in-vehicle sensor system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09318384A (en) * | 1996-05-29 | 1997-12-12 | Fujitsu Ten Ltd | Error correcting method for movement detecting sensor |
| JPH1114662A (en) * | 1997-06-26 | 1999-01-22 | Matsushita Electric Ind Co Ltd | Sensor apparatus for air bag |
| JP2005114402A (en) * | 2003-10-03 | 2005-04-28 | Sony Corp | Method and device for detecting falling-off |
| JP2009067342A (en) * | 2007-09-18 | 2009-04-02 | Nippon Seiki Co Ltd | Instrument for vehicle |
-
2010
- 2010-11-25 JP JP2010261895A patent/JP2012111350A/en active Pending
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2011
- 2011-10-17 WO PCT/JP2011/073784 patent/WO2012070329A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09318384A (en) * | 1996-05-29 | 1997-12-12 | Fujitsu Ten Ltd | Error correcting method for movement detecting sensor |
| JPH1114662A (en) * | 1997-06-26 | 1999-01-22 | Matsushita Electric Ind Co Ltd | Sensor apparatus for air bag |
| JP2005114402A (en) * | 2003-10-03 | 2005-04-28 | Sony Corp | Method and device for detecting falling-off |
| JP2009067342A (en) * | 2007-09-18 | 2009-04-02 | Nippon Seiki Co Ltd | Instrument for vehicle |
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| JP2012111350A (en) | 2012-06-14 |
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