JP2007086000A - Drive unit for measuring instrument - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a drive unit for a measuring instrument capable of recognizing instantaneously a vehicle travel distance within a time interval when a user stores vehicular information data. <P>SOLUTION: This drive unit 1 for the measuring instrument is provided with the measuring instrument 5 having a display part (digital display part) 5d capable of displaying vehicular information, and control means (the first and second control means) 3a, 5a for operating the display part 5d based on the vehicular information data indicating the measurement value of the vehicular information, and for storing the vehicular information data within a prescribed period in a storage means (memory card) 3b. The display part 5d can display the travel distance, and the control means 3a, 5a calculate an integrated data indicating the travel distance under storage processing, and make the travel distance under the storage processing displayed on the display part 5d, when starting the storage of the vehicular information data. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an instrument driving device for displaying vehicle information such as a traveling speed of a vehicle and an engine speed.

  Conventionally, as a vehicle instrument, for example, a vehicle mounted as a combination meter having a speedometer, a tachometer (TA meter), a thermometer, a fuel meter, a vehicle running on a circuit racetrack, a supercharger, or a turbo There are intake pressure gauges (boost gauges), exhaust thermometers, fuel pressure gauges, etc. This instrument detects various vehicle information with various sensors, ignition pulse (TA pulse), speed pulse (SP pulse), etc., and displays various vehicle information on a display unit such as an analog display unit or a digital display unit. To do.

  In addition, in such an instrument, particularly an instrument provided in a traveling vehicle traveling on a circuit racetrack or the like, vehicle information for a predetermined time is stored in order to grasp the running state in the race, or the stored past vehicle It has been desired that information can be reproduced and displayed on the display unit.

  Therefore, the applicant of the present application disclosed in Patent Document 1 is a meter that detects vehicle information and displays the vehicle information by a display unit. Vehicle information data that causes the display unit to perform display operation according to the vehicle information is predetermined. An instrument driving apparatus is provided that includes storage means for storing time, and further includes reproduction means for displaying the display unit based on vehicle information data stored in the storage means.

According to the instrument driving device disclosed in Patent Document 1, the user can visually check past vehicle information during traveling in the same manner as normal operation, and in particular, a predetermined time trial or circuit race or the like. By storing and reproducing the vehicle information during the time, it is possible to review the self-driving of the race and consider improving the race time. Further, it is possible to grasp vehicle running characteristics such as engine performance during running and to obtain information for adjusting vehicle parts such as the engine.
JP 2000-46588 A JP 2005-181239 A

  However, in the instrument driving device having the function of storing the vehicle information data during traveling, the user can instantly recognize the travel distance traveled by the vehicle while the vehicle information data is stored. There was room for further improvement in that it was not possible. In addition, what displays a travel distance is widely known as a meter for vehicles (for example, refer to patent documents 2), and it is based on contrast with the latest travel distance at the time of starting storage of the vehicle information data. Although the travel distance during the storage process can be grasped, it is very complicated to compare the numerical values during the travel, and the travel distance during the storage process cannot be grasped instantaneously.

  In view of the above problems, the present invention further improves an instrument driving device having a function of storing vehicle information data during a predetermined time during which the vehicle travels, while the vehicle stores the vehicle information data. An object of the present invention is to provide an instrument driving device capable of instantaneously recognizing the travel distance traveled by the vehicle.

  In order to solve the above-described problem, the instrument driving apparatus according to the present invention operates an instrument having a display unit capable of displaying vehicle information, and the display unit based on vehicle information data indicating a measured value of the vehicle information. And a control means for storing the vehicle information data during a predetermined time in a storage means, wherein the display unit can display a travel distance, and the control means When the storage process of the vehicle information data is started, integrated data indicating the travel distance during the storage process is calculated, and the travel distance during the storage process is displayed on the display unit.

  In addition, when the storage of the vehicle information data is ended, the control unit ends calculation and display of the travel distance during the storage process.

  Further, the control means is capable of switching and displaying the travel distance during the storage process and the normal travel distance during the storage process of the vehicle information data. .

  In addition, an operation unit having one or a plurality of operation switches is provided, and the control unit reproduces and displays the display unit based on the vehicle information data stored in the storage unit in response to a predetermined operation of the operation unit. It is characterized by letting it be.

  Further, the control means stores the accumulated data indicating the travel distance during the storage process as the vehicle information data in the storage means, and reproduces the display unit based on the accumulated data stored in the storage means. The display is operated.

  The control means may display the travel distance during the storage process on the display unit in a display form different from the display of the travel distance during normal time.

  The present invention relates to a meter drive device that displays vehicle information such as a vehicle traveling speed and an engine speed, and further improves the meter drive device having a function of storing vehicle information data during a predetermined time during which the vehicle travels. The travel distance traveled by the vehicle while the user stores the vehicle information data can be instantly recognized.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 shows an electrical configuration of a meter driving device 1 according to an embodiment of the present invention, and FIG. 2 shows an external appearance of the meter driving device 1.

  The meter drive device 1 includes an input unit 2, a control unit 3 having a first control unit (control unit) 3a, a memory card (storage unit) 3b, and a first light emitting unit 3c, a switch unit 4, and a second unit. It consists mainly of a combination meter (instrument) 5 having a second control means (control means) 5a, a first analog display section 5b, a second analog display section 5c, and a digital display section (display section) 5d.

  The input means 2 includes a vehicle speed sensor 2a, a signal line 2b for inputting a pulse signal from the ignition coil (hereinafter referred to as a TA pulse), a water temperature sensor 2c, an oil temperature sensor 2d, and first and second boost pressure sensors 2e. It consists of various sensors and signal lines for detecting vehicle information to be displayed on the second analog display portions 5b and 5c and the digital display portion 5d, and outputs each state signal indicating the vehicle information to the first control means 3a. The vehicle speed sensor 2a outputs a state signal (pulse signal) in proportion to the travel distance, and is also used as a distance detection means for detecting an integrated value of the travel distance.

  As shown in FIG. 2, the control unit 3 is configured by housing a first control means 3a and a memory card 3b in a unit case 3d made of a resin material or the like. The memory card 3b is detachably disposed in a card slot (housing portion) 3e formed in the unit case 3d. Also, a first light emitting portion 3c made of an LED or the like for notifying that the memory card 3b is stored in the card slot 3e is formed in the vicinity of the card slot 3e of the unit case 3d.

  The first control unit 3a is mainly composed of a microcomputer, and stores an input unit for inputting the state signal from the first input unit 2, a CPU for executing a predetermined processing operation program, the processing operation program, and the like. A ROM, a RAM for temporarily storing data processed by the CPU, a storage unit including an EEPROM, a backup RAM, and the like for storing data such as setting values related to the display function of the combination meter 5 in a nonvolatile manner And a transmission unit that transmits the data calculated by the CPU at a predetermined cycle. When the first control unit 3a receives the state signals from the input unit 2, the first control unit 3a performs predetermined arithmetic processing in accordance with the state signals, calculates vehicle information data indicating measured values of the vehicle information, Each vehicle information data is transmitted to the 2nd control means 5a. The accumulated data indicating the accumulated value of the travel distance is calculated by performing a predetermined calculation process according to the state signal from the vehicle speed sensor 2a.

  The first control means 3a has a storage function for storing the vehicle information data in synchronization with the memory card 3b. Further, the first control means 3a is a travel distance (travel distance during the storage process; the travel distance during the storage process) during the writing process (storage process) for storing the vehicle information data in the memory card 3b in the storage function. A REC trip display function for displaying a REC trip value on the digital display 5d. The first control means 3a includes first and second analog display portions 5b and 5c and a digital display portion 5d of the combination meter 5 based on the vehicle information data stored in the memory card 3b by the storage function. Has a reproduction display function for performing the reproduction display operation in synchronization with each other.

  The first control means 3a detects the communication state with the memory card 3b, and when the memory card 3b is accommodated in the card slot 3e and can communicate with the memory card 3b, the first light emitting unit 3c. Is turned on, and when the memory card 3b is taken out from the card slot 3e and cannot communicate with the memory card 3b, the first light emitting unit 3c is turned off. The first light emitting unit 3c may be turned off after being turned on for a predetermined time. Further, the first control means 3a calculates the storable time of the vehicle information data in the memory card 3b, and will be described later when this storable time becomes less than a predetermined set time (for example, 10 minutes). The second light emitting unit 5e is caused to blink on the second control means 5a.

  The memory card 3b is a small storage means provided with a flash memory in which data can be written and read. The memory card 3b is detachably disposed in the card slot 3e as shown in FIG. It is connected to the means 3a. The memory card 3b stores the vehicle information data by the writing process of the first control means 3a.

  As shown in FIG. 2, the switch unit 4 includes a switch case 4a made of a resin material or the like and a plurality of push button switches 4b. The switch unit 4 includes a digital display portion 5d of the combination meter 5 in the control unit 3. An operation means for switching display contents, determining the start or end of the writing process of the storage function, setting the storage time in the storage function, determining the start or end of the playback display operation in the playback function, and the like.

  As shown in FIG. 2, the combination meter 5 includes a second control unit 5a, a first analog display unit 5b, a second analog display unit 5c, a digital display unit 5d, and a second light emitting unit 5e that are made of a resin material or the like. The meter case 5f is provided on a dashboard of a vehicle or a handle column cover. The display surface side of the combination meter 5 is covered with a cover body (not shown) made of a translucent resin material or the like.

  The second control means 5a is mainly composed of a microcomputer composed of CPU, ROM and RAM. The second control means 5a has a receiving unit for receiving each vehicle information data transmitted from the first control means 3a, and passes through the first drive circuit 6f based on the received each vehicle information data. The drive signal is output to the first and second analog display portions 5b and 5c to cause the first and second analog display portions 5b and 5c to perform a display operation indicating the measured value of the vehicle information, and the second A driving signal is output to the digital display unit 5d via the driving circuit 6g, and the measured value of the vehicle information is displayed on the digital display unit 5d.

  As shown in FIG. 2, the first and second analog display portions 5b and 5c have hands 5b1 and 5c1 and analog indicator portions 5b2 and 5c2. The user can read the measured value of the vehicle information by comparing and reading the pointers 5b1 and 5c1 with the analog indicator portions 5b2 and 5c2. In the present embodiment, the first analog display unit 5b displays the engine speed in the range from 0 rpm to 11000 rpm as the vehicle information. The second analog display unit 5c displays the engine supercharging pressure in the range from -80 kPa to 300 kPa as the vehicle information. Each of the hands 5b1 and 5c1 is rotated through a rotation shaft of a drive main body (not shown) formed of a stepping motor or a cross coil. Each of the analog indicator portions 5b2 and 5c2 is printed on the dial 6g, and has a plurality of indicators that are formed of scales, numbers, and the like and are provided in a substantially arc shape.

  The digital display unit 5d is composed of, for example, an organic EL display, and displays a plurality of measured values of the vehicle information by numerical display as shown in FIG. Note that FIG. 2 shows a case where an accumulated value (hereinafter referred to as a trip value) of the travel speed of the vehicle and the travel distance from a predetermined time is displayed as the vehicle information. The vehicle information displayed on the digital display unit 5d can be switched by a predetermined operation of the switch unit 4 by the user. Further, the digital display unit 5d may display an integrated value (so-called odd value) of the total traveling distance of the vehicle as a normal traveling distance.

  The above-described units constitute the instrument driving device 1 of the present invention.

  Next, a method of driving the instrument driver 1 in the storage function and the REC trip display function will be described with reference to FIGS.

  In the normal operation mode, the first control unit 3a inputs the state signals from the input unit 2, calculates the vehicle information data according to the state signals, and sets the vehicle information data to the first control unit 3a. To the second control means 5a. Further, the second control means 5a causes the first and second analog display portions 5b and 5c and the digital display portion 5d to display the vehicle information in accordance with the received vehicle information data. Yes. The first control means 3a determines whether or not a predetermined storage operation for starting the writing process of the storage function is input from the switch unit 4 in step S1, and if the storage operation is not input, the normal operation mode If the storage operation is input, the process proceeds to step S2.

  The first control means 3a continues the normal operation mode and performs a writing process on the memory card 3b in step S2 so as to store the vehicle information data calculated during a predetermined time in synchronization.

  Further, when the storage operation of the switch unit 4 is input in step S1, the first control means 3a transmits a predetermined switching signal to the second control means 5a in step S3. Upon receiving the switching signal, the second control means 5a switches the display content of the digital display section 5d from the normal trip value display (see FIG. 4A) to the REC trip value display (FIG. 4). 4 (b)). That is, when the writing process of the vehicle information data is started, the numerical display of the travel distance on the digital display unit 5d is automatically displayed as zero. At this time, the display of the REC trip value is displayed in a display form different from the normal trip value. Specifically, in the trip value display, the characters “TRIP” are displayed on the left side of the numerical display, whereas in the REC trip value display, “REC” is displayed on the left side of the numerical display. The characters “TRIP” are displayed. Further, the first control means 3a calculates integrated data indicating the REC trip value in accordance with a state signal from the vehicle speed sensor 2a during the writing process of the vehicle information data, and uses the integrated data as the second data. To the control means 5a. The second control means 5a displays the REC trip value integrated on the digital display unit 5d based on the integrated data (see FIG. 4C). Moreover, the 1st control means 3a memorize | stores the said integrated data which shows the said REC trip value in the memory card 3b as said vehicle information data in the write-in process of step S2. The first control means 3a receives the predetermined switching operation of the switch unit 4 when the REC trip value is displayed on the digital display unit 5d in step S3, and the second control means 5a. A predetermined switching signal is transmitted to When the second control means inputs the switching signal, the display content of the digital display section 5d is switched from the REC trip value display to the normal trip value display. In step S3, the calculation of the integrated data indicating the trip value at the normal time is continued, and a value obtained by adding the REC trip value is displayed as the trip value.

  In step S4, the first control means 3a determines whether or not a predetermined release operation for releasing the storage function of the switch unit 4 has been input. When the release operation is input, a predetermined time has elapsed. At least, the writing process of the vehicle information data is interrupted, and the storage function is released. At this time, the REC trip display function is also canceled, the calculation of the integrated data indicating the REC trip value is finished, a switching signal is transmitted to the second control means 5a, and the display content of the digital display section 5d is displayed in the normal state. The display is switched to the trip value display (see FIG. 4D).

  If the release operation is not input in step S4, the first control means 3a determines in step S5 whether or not the vehicle information data writing process has been performed for a predetermined time. If the predetermined time has not elapsed, When the writing process is continued and a predetermined time has elapsed, the writing process is terminated, and the storage function and the REC trip display function are canceled.

  By performing the above processing, the first control means 3a can store the time change of each vehicle information data during a predetermined time in the memory card 3b, and by displaying the REC trip value, It is possible to instantly recognize the travel distance while each vehicle information data is stored.

  Next, a driving method of the instrument driving apparatus 1 in the reproduction display function will be described with reference to FIG.

  When the normal operation mode is being executed, the first control means 3a determines whether or not a predetermined reproduction operation for starting the reproduction display function of the switch unit 4 is input in step S6, and the reproduction When the operation is not input, the normal operation mode is continued, and when the reproduction operation is input, the process proceeds to step S7.

  In step S7, the first control means 3a cancels the normal operation mode and performs a process of reading the vehicle information data stored in the memory card 3b.

  Further, the first control means 3a transmits the vehicle information data read from the memory card 3b to the second control means 5a of the combination meter 5 (step S8). The second control means 5a causes the first and second analog display portions 5b and 5c and the digital display portion 5d to perform a reproduction display operation for displaying the past vehicle information in accordance with the received vehicle information data. Display control is performed accordingly. At this time, if the display of the trip value is selected as the display content of the digital display unit 5d, the second control means 5a is based on the integrated data indicating the REC trip value received as the vehicle information data. The previous REC trip value is reproduced and displayed. It should be noted that the display form of the REC trip value in the reproduction display is the same as that shown in FIGS.

  In step S9, the first control means 3a determines whether or not a predetermined release operation for releasing the reproduction display function of the switch unit 4 has been input. When the release operation is input, it is stored in the memory card 3b. Even before all the vehicle information data is read or transmitted, the reading process and data transmission are interrupted, the reproduction display function is canceled, and the normal operation mode is entered.

  If the release operation is not input in step S9, the first control means 3a determines in step S10 whether or not all the vehicle information data stored in the memory card 3b has been transmitted. When each vehicle information data is not transmitted, the reading process and the transmission process are continued. When all the vehicle information data are transmitted, the reading process and the transmission process are terminated and the reproduction display function is canceled. , Transition to the normal operation mode.

  By performing the above processing, the first control means 3a can reproduce and display the time change of each vehicle information including the REC trip value during the past predetermined time by the combination meter 5.

  According to the above configuration, when the instrument driving apparatus 1 starts storing the vehicle information data by the first and second control means 3a and 5a, the wreck value is calculated and the digital display section 5b is calculated. By displaying the REC trip value on the display, it becomes possible for the user to instantly recognize the mileage while the vehicle information data is stored, and the merchantability of the instrument drive device can be improved. .

  Further, the instrument driving device 1 uses the first and second control means 3a and 5a to store the REC trip value and the normal trip value on the digital display unit 5d during the writing process of the vehicle information data. By enabling switching and display, the user can select the content of the travel distance displayed while the vehicle information data is stored, and the merchantability of the instrument drive device can be improved. .

  In addition, the instrument driving device 1 causes the first and second control means 3a and 5a to store the accumulated data indicating the REC trip value as the vehicle information data in the memory function in the memory card 3b in the storage function, and to perform the reproduction. In the display function, when the digital display unit 5d is reproduced and displayed based on the integrated data stored in the memory card 3b, the first and second analog display units 5b and 5c and the digital display unit 5d are reproduced and displayed. In this case, it becomes possible for the user to instantly recognize the distance traveled by the vehicle during the storage process, and the merchantability of the instrument drive device can be improved.

  In addition, when displaying the REC trip value on the digital display unit 5d, the instrument driving device 1 displays the REC trip value in a display form different from the normal display of the trip value, so that the user can set the REC trip value. It is possible to immediately determine whether or not it is displayed.

  In this embodiment, when the instrument drive device 1 inputs the switching operation of the switch unit 4 during the vehicle information data writing process, the display content of the digital display unit 5d is displayed from the display of the REC trip value. Although the display is switched to the display of the trip value at the normal time, the display switching between the travel distance during the storage process and the travel distance at the normal time during the storage process of the vehicle information data in the present invention is limited to the present embodiment. For example, the travel distance during the storage process and the normal travel distance are alternately displayed, or the travel distance during the storage process when a predetermined travel speed (for example, 10 km / h) or less is displayed. The display may be switched from the display of normal travel distance.

  In this embodiment, the character display displayed on the side of the numerical display is made different so that the display of the REC trip value is displayed in a display form different from the display of the trip value in the normal state. However, the “different display form” in the present invention is not limited to the present embodiment. For example, in the display of the trip value in the normal state, the display “TRIP” is turned on the left side of the numerical value display. It is also possible to display the “TRIP” blinking in the display of the REC trip value.

  Further, in the present embodiment, the instrument driving device 1 has two controls, namely, a first control means 3a provided in the control unit 3 and a second control means 5a provided in the combination meter 5 as control means. However, the instrument driving apparatus of the present invention may have a single control means.

  In the present embodiment, the control unit 3 having the first control means 3a and the memory card 3b is different from the combination meter 5 having the first and second analog display portions 5b and 5c and the digital display portion 5d. Although the instrument driving device according to the present invention is provided on the body, the instrument having the control means, the storage means, and the display unit may be provided on a single case body.

The block diagram which shows the electric constitution of the drive device of the meter of embodiment of this invention. The figure which shows the external appearance of the drive device of an instrument same as the above. The figure which shows the control method in a memory | storage function same as the above and a REC trip display function. The figure which shows the example of a display in a REC trip display function same as the above. The figure which shows the control method in a reproduction | regeneration display function same as the above.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Instrument drive device 2 Input means 3 Control unit 3a First control means (control means)
3b Memory card (storage means)
4 Switch unit 5 Combination meter (instrument)
5a Second control means (control means)
5b First analog display section 5c Second analog display section 5d Digital display section (display section)

Claims (6)

An instrument having a display unit capable of displaying vehicle information, the display unit is operated based on vehicle information data indicating a measured value of the vehicle information, and the vehicle information data during a predetermined time is stored in a storage unit An instrument driving device comprising control means,
The display unit can display a travel distance,
When the storage process of the vehicle information data is started, the control means calculates integrated data indicating a travel distance during the storage process, and displays the travel distance during the storage process on the display unit. Instrument driving device. 2. The instrument driving device according to claim 1, wherein when the storage process of the vehicle information data is ended, the control unit ends calculation and display of a travel distance during the storage process. The control means is capable of switching and displaying the travel distance during the storage process and the normal travel distance during the storage process of the vehicle information data on the display unit. 2. The instrument driving device according to 1. 2. The instrument driving apparatus according to claim 1, wherein the control unit causes the display unit to reproduce and display based on the vehicle information data stored in the storage unit in response to a predetermined operation. The control unit stores the accumulated data indicating the travel distance during the storage process as the vehicle information data in the storage unit, and reproduces and displays the display unit based on the accumulated data stored in the storage unit The instrument driving apparatus according to claim 4, wherein the instrument driving apparatus is provided. 2. The control device according to claim 1, wherein when the travel distance during the storage process is displayed on the display unit, the control means displays the travel distance in a display form different from the display of the travel distance in a normal state. 5. The instrument driving device according to 5.

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