JPS5954924A - Measuring apparatus for vehicle - Google Patents

Abstract

PURPOSE:To improve safety, by pushing a display mode changing switch continuously for a specified time period or more, thereby automatically switching the kinds of measured and computed results to be displayed in the specified sequence. CONSTITUTION:A microcomputer 5 displays, e.g., running time at the initial state. At every time a display mode changing switch SW5 is pushed, the kinds of the measured and computed results to be displayed by a liquid crystal type display device 3 are switched in the sequence of running distance, average vehicle speed, fuel consumption, the amount of remaining fuel and the distance that can be covered by the remaining fuel. When the pushed time continues for the period exceeding a specified time, the kinds of the measured and computed results to be displayed are continuously switched in a specified sequence at a specified interval during the time the switch is pushed. In this way, there is no danger even though the switching operation is performed during the high speed running.

Description

[Detailed description of the invention] , Industrial application field 　　　　　　　　,′.

The present invention relates to a novel measuring device for vehicles, and in particular, to a novel measuring device for vehicles, in which it is easy to switch the types of measurement calculation results to be displayed according to a predetermined order, and the program for changing the switching is simplified. The aim is to provide a measuring device.

BACKGROUND TECHNOLOGY When driving with a car, motorcycle, etc., there are various factors such as not only speed but also travel time, travel distance, and even the so-called remaining distance, that is, the distance that can be traveled with remaining fuel. It is preferable to keep track of these things at all times, and especially in rallies, it is essential to have an accurate grasp of them. Time, travel elongation, remaining travel severity ml
There has been a demand not only in Japan but also in foreign countries to install a measuring device that calculates distance and displays the results of the calculation, and some devices have appeared that have met this demand. This type of measuring device has a built-in microcomputer, which processes data from the internal timer, axle rotation detection sensor, fuel consumption sensor, etc. to calculate running time, running distance, remaining fuel, and remaining running time. Possible distances, etc. are determined and displayed on a display.

In order to reduce the size of this type of measuring device, many of them use small devices that can only display one measurement calculation result as a display, and this type of device uses a display mode switch. Install a switch.

Words that are displayed on the display: 1) The type of measurement calculation result can be changed using the switch. By the way, driving: It is very common to be forced to sequentially view various measurement and calculation results in order to understand the details, either while the car is stopped or parked, or while driving. Therefore, it is difficult to operate the display monitor switch.
It is very dangerous to watch the display of the measurement and calculation results of seed capture one after another while driving. □Purpose of the Invention Accordingly, it is an object of the present invention to provide a novel vehicle measuring device that facilitates the operation of switching the types of measurement calculation results to be displayed according to a predetermined order. .

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::'Summary of the Invention' □ The configuration of the Kyoumei to achieve the above two objectives includes a measurement calculation unit that receives various signals related to driving and processes them appropriately to perform multiple types of measurement calculations; A display section for displaying the measurement operation results calculated by the measurement operation section, and a display section for displaying the measurement operation results calculated by the measurement operation section, and a display section for displaying the measurement operation results calculated by the measurement operation section, and the types of measurement operation results displayed by the measurement operation section for each press operation according to a predetermined order. There is a vehicle measuring device consisting of a display mode selector switch and a display mode selector switch, and the display mode selector switch is suppressed for more than one hour. The apparatus is characterized in that the types of measurement calculation results displayed by the display section are arranged in a predetermined order in a self-selected manner. Therefore, according to the present invention, the types of measurement calculation results to be displayed can be switched in a predetermined order by simply continuing to press the display mode changeover switch.

EMBODIMENT F From the following, the vehicle measuring device of the present invention will be explained in detail according to the embodiment shown in the accompanying drawings. .

The drawings show an example of implementation of the vehicle measuring device of the present invention, and the first
The figure shows the main body of the device, and in the figure,
Reference numeral 2 is a case in which a microcomputer, a liquid crystal display device 3, and the like to be installed later are mounted, and a display window 4 is provided on the surface of the case 2. The liquid crystal display surface of the liquid crystal type display device 3 is made to face the display window 4, and the display by the display device 3 can be visually recognized through the internal indication window 4. SW1-5 are switches provided on the front of case 2.
SWI is the power switch, SW 2. is a start/stop switch, SW3 is a reset switch, SW4 is a full tank switch, and SW5 is a front/display mode changeover switch. The functions of these switches SW1 to SW5 will be explained in detail later.

FIG. 2 is a block diagram showing the circuit configuration of the vehicle measuring device. In the figure, reference numeral 5 denotes a microcomputer that performs measurement calculations according to a predetermined program. 6 is a central processing unit (CPU) that executes each process necessary for measurement calculation and display of measurement calculation results according to a predetermined program;
is a read-on re-memory (ROM) 8 that stores necessary basic memory items in addition to the programs executed by the CPU 6.
are various signals from various sensors and various switches, which will be described later; and the fuel obtained by processing the signals.

Random access memory (RAM) that stores costs and other intermediate data and various calculation results as needed;
Reference numeral 9 denotes an input circuit that takes in signals from sensors and switches, and sends them to the CPU 6, JRAM 8, and the like as appropriate. 1.0
is a remaining fuel amount storage register, and when fuel is consumed, the stored contents are rewritten to a value subtracted by the amount of fuel consumption detected by a fuel consumption sensor, which will be described later. This register 10 always stores the amount of fuel currently remaining in the fuel tank as long as the measuring device is used correctly. In addition, the details of the function of this register O 7iI11
′, will be made clearer later. Reference numeral 11 denotes an output circuit that stores a signal indicating a measurement calculation result to be displayed on the display device 3 and sends the signal to the display device 3. 12 is an address bus that connects the GPU, ROM 7, RAM 8, input circuit 9, and output circuit 11, and 13 is a data bus. - Numeral 14 is a mileage sensor, which sends a one-pulse axle rotation detection signal to the input circuit 9 of the microcomputer every time the vehicle axle rotates once. Therefore, the travel distance can be determined by multiplying the number of pulses of the axle rotation detection signal by the travel distance per one revolution of the axle in the microcombi and user 5. Reference numeral 15 denotes a fuel consumption sensor installed in the oil supply passage from the fuel tank to the engine bay, which sends a top pulse fuel consumption signal to the input circuit 9 every time a certain minute amount of oil is supplied. The microcomputer 5 can calculate the amount of fuel consumed by multiplying the number of pulses of the fuel consumption signal by the amount of oil fed per pulse. 1
'6 is a full fuel tank installed in the fuel tank.
When the fuel tank is full □, that is, full': When there is a tank or an amount relatively close to full remaining: That is, when it can be said that the tank is almost full, a full tank detection signal is sent to the input circuit 9.・ , swi is a power switch connected between the power supply terminal receiving the power supply voltage of the microcomputer 5 and the anode of the power supply E whose cathode is grounded, and SW2 to SW5 are switches connected to the input circuit 9 of the microcomputer. be. When the power switch SWi is turned on, the power supply voltage E is applied to the microcomputer 5. microcomputer 5
When the power supply voltage E is applied, it is set to a predetermined initial state and starts specific measurement calculations to determine fuel consumption, remaining fuel amount, etc. = However, other general measurement calculations such as running time, remaining running capacity, etc. Measurement calculations to calculate distance etc. start/
The cycle will not start until the stop switch SW2 is pressed. Note that the ignition switch is used as the power switch SW1, and the ignition switch is turned on. The power may be automatically turned on to the computer 5. Start/stop switch SW
2, when the power switch SW1 is turned on and the microengine computer 5 is set to a predetermined initial state, the computer 5 calculates the above-mentioned running time,
It functions to start general measurement calculations to obtain running pressure, #:, etc. , this start/stop switch SW2
is the function of stopping the measurement calculation when the general measurement calculation is performed, and is pressed in the stopped state. Resume/Function: 1. The above-mentioned function of the start/stop switch S'W2 is preferably performed with respect to the mode displayed by the display device 3. , Reset switch 9W3: When pushed, sets content 1 of the measurement calculation results displayed by the display device 3 to "0" among the various measurement calculation results stored in the RAM 8°. It works to reset. . . . However, the fuel consumption amount: and the contents of the remaining fuel amount stored in the remaining fuel amount storage register 10 cannot be reset by operating the reset switch SW3.

The full tank switch SW4 is activated when a full tank detection signal is output from the full tank sensor l'6 (this means that the fuel tank is full of fuel, or relatively close to it). ), ni butshu,
When this happens, the content of the remaining fuel amount stored in the remaining fuel amount storage register 10 is rewritten to the full amount. That is, for example, if the capacity of the fuel tank of an automobile is 40 liters, a signal indicating 40 liters is stored in advance in the full tank storage area in the RO/M7. When the full tank switch SW4 is pressed while the full tank detection signal is being output from the full tank sensor 16, the initial value that is the full tank amount is obtained from the full tank 1 memory bond □ castle in the ROM7. For example, a signal indicating 40 liters is loaded into the register 10 for storing the remaining fuel amount. Note that when the full tank sensor 16 outputs a full tank detection signal for an amount smaller than the tank capacity, a signal indicating the amount, for example 38 liters, is stored in the remaining fuel amount storage register 10 by the button of the switch SW4. It is recommended that it be loaded.

The basic function of the full tank switch SW4 is to rewrite the contents of the remaining fuel amount memory register 10 to the full tank amount when it is pressed when the tank is full, but if it is pressed when the tank is not full, the next It works like this. That is, when the full tank sensor 16 does not output a full tank detection signal (this means that the amount remaining in the fuel tank is less than the amount that can be said to be approximately full), the full tank switch SW4 is turned off by the button. When this happens, the content of the remaining fuel storage register 10 is increased by a predetermined amount of fuel, for example, 1 liter. The reason why we give this function to the full tank switch SW4 is because people do not have enough money on hand when refueling at a gas station.
This is because if the amount of fuel to be refilled is much smaller than the amount required to fill the tank, it is necessary to increase the stored content of the remaining fuel amount storage register 10 by the amount to be refilled.
・1 However, when refilling the fuel tank to full □, confirm that the tank is full, press the full tank switch SW4 once, and replenish the amount that does not reach full tank. is the number of times to fill up the tank SW according to the amount of replenishment.
4, it is possible to ensure that the remaining fuel amount storage register 10 always stores the actual amount of fuel remaining in the tank very accurately.

When the display mode changeover switch SW5 is pressed once, it sends out a one-pulse display mode changeover signal at ground level to the input circuit 9 of the microcomputer 5. The microcomputer 5 functions to switch the types of measurement calculation results to be displayed by the front thread device 3 in a predetermined order every time it receives a display mode switching signal. For example, the order in which the types of measurement and calculation results to be displayed change is, for example, driving time, driving pressure/11 distance, average vehicle speed, fuel consumption, amount of fuel consumed, distance that can be traveled with remaining fuel, and the last When the display mode selector switch SW5 is pressed while the distance that can be traveled with the remaining fuel is displayed, the display returns to the state where the initial travel time is displayed.

In this way, the display mode selector switch SW5 basically works to change the type of measurement calculation result one by one each time it is pressed, but if it remains pressed for a certain period of time (for example, (seconds), if this continues, the type of measurement calculation result will be switched at every predetermined time interval (for example, 2 seconds) in the above-mentioned predetermined order. This state continues until the display mode selector switch SW5 is released from the pressed state.

Operation The operation of the vehicle measuring device shown in the drawings will be explained below.

(1) When the power switch SW1 is turned on, the power supply voltage E is applied to the microcomputer 5, and (2) the microcomputer 5 is brought into a predetermined initial state. The remaining fuel amount storage register 10, which is made up of a non-volatile memory, stores the remaining amount of fuel at the time the power is turned off before the power is turned on. (approximately equal to the amount of .) remains stored, and is not reset to rOJ. When the microcomputer 5 enters the initial state, specific measurement calculations for determining fuel consumption, remaining fuel amount, etc. are started.

In addition, in the initial state, a predetermined type of measurement calculation results, for example, the measurement calculation result of running time, is loaded into the output circuit 11 from among the various measurement calculation results stored in the RAM 8 and the fuel amount/quantity storage register 10'.

(2) Next, when the start/stop switch SW2 is pressed, general measurement calculations for determining travel time, travel distance, fuel consumption, remaining travel distance, etc. are started. By the way, the measurement calculation for determining the remaining travel distance is explained as follows. That is, □, traveling swelling sensor 14
The travel distance is determined by counting the axle rotation detection signal from the fuel consumption sensor 15, and the amount of fuel consumption is determined by counting the number of pulses of the fuel consumption signal from the fuel consumption sensor 15. Then, the fuel consumption is calculated by dividing the calculated mileage by the fuel consumption amount, and this fuel consumption is multiplied by the remaining fuel amount stored in the fuel remaining amount storage regime lO. By doing so, the remaining travelable distance can be calculated.

(3) By the way, when the microcomputer 5 enters its initial state, it displays, for example, the running time.

Then, when the display mode changeover switch SW5 is pressed, the types of measurement calculation results displayed by the display device 3 are switched in the order of mileage, average vehicle speed, fuel consumption, amount of fuel consumed, and distance that can be traveled with remaining fuel. Change. By the way, this display mode changeover switch SW5 is basically 1.
It works to switch the type of measurement calculation result displayed each time it is pressed, but the time it is pressed is for a certain period of time (for example, 2 seconds, if L%'c continues for 2 seconds, - Between 4' of the spear: :': i1 - Quantity saving admonition ゛2
Seconds) are displayed in the order mentioned above, and the measurement calculation results are displayed. □Therefore,
Press the front thread - 2' do vJ-' □↓jsJ5, and the status number will be changed automatically. to get a general understanding of the driving contents.
To view various measurement calculation results for a short time, press the display mode switch □ switch 5k54 ↓ to clear the type i of measurement calculation results to be displayed. There is little risk of danger even if you sit down and turn around while driving at -: speed. □
(4) If the remaining amount of fuel is low and the remaining driving distance is too low, a full tank detection signal will be generated as described above. do.

Then, in the state where the full tank detection signal is based, SW4 is pressed, and the memory contents of the fuel frequent fuel quantity memory are rewritten to the full tank quantity, and the memory contents of the fuel tank are rewritten to the full tank quantity. The remaining drivable distance stored in the system also changes to the value obtained by multiplying the fuel consumption by the amount of full tank.

In addition, when refueling, it is normal to fill up the fuel tank, but due to reasons such as having little money on hand, the amount is considerably less than filling up the fuel tank. In some cases, only a small amount is supplied. In such a case, the full tank 1 signal from the full tank sensor 16 is:
It does not occur, and the full tank switch SW5 is blank.

When the value is stored in the register lO for storing the remaining fuel amount, the value is stored in a predetermined minute amount, for example 441:, Tor! Add...
, in a state of functioning. To set the fuel storage register 10 to a state in which the actual remaining amount of fuel is stored in a case such as the case of JOJI, it is sufficient to press the full tank switch SW5 the number of times corresponding to the replenishment amount. For example, if you have refilled only 10 liters when the remaining fuel amount is 5 liters, set the full tank switch SW5 to 10 liters.
Tweet twice. Then, the remaining fuel amount storage register 160 switches from a state where 5 liters is stored to a state where 15 liters is stored.

In order to ensure safety, refueling is normally performed with the ignition switch turned off and the engine stopped. Therefore, when turning off the ignition switch for refueling, for example, when turning off the ignition switch in order to refuel, in a type of vehicle in which the power to the measuring device is turned on or off when the ignition switch is turned on or off, the For example, make sure that a source of zoelectric current is applied to the measuring device, or store all the results of various measurement calculations in non-volatile memory so that they will not disappear when the power is turned off. It is necessary to do something like this.

As described above, in the vehicle measuring device of the present invention,
A measurement calculation unit that receives various driving-related signals and processes them as appropriate to perform multiple types of measurement calculations; a display unit that displays measurement calculation results calculated by the measurement calculation unit; A vehicle measuring device comprising: a display mode changeover switch that switches the type of measurement calculation results displayed by the display unit in a predetermined order each time the display unit is pressed, the display mode changeover switch being pressed; is characterized in that when the button continues to be pressed for a certain period of time or more, the types of measurement calculation results displayed on the display section are automatically switched in accordance with a predetermined order while the button is pressed. Therefore, according to the present invention, the types of measurement calculation results can be switched in a predetermined order by simply continuing to press the display mode changeover switch. Additionally, switching the types of measurement calculation results to be displayed in a predetermined order can be done using a relatively simple program, such as sequentially reading and executing display mode designation commands stored in a predetermined area of the ROM 7. The program can be simplified by executing the following command.

[Brief explanation of drawings]

The drawings show an example of the implementation of the vehicle measuring device of the present invention, and FIG. 1 is a perspective view of the main body of the device, and FIG. 92 is a block diagram showing the circuit configuration of the device. Explanation of symbols 3...Display section, 6.7.8.9, LL--Measurement calculation section, 5W5-/ψDisplay mode changeover switch Applicant: Koito Seisakusho Co., Ltd. Representative Patent Attorney Yu Komatsu Beat 0

Claims (1)

[Claims] (1) Receive various signals related to driving, process them as appropriate, and perform multiple types of measurement calculations. A display section that displays measurement calculation results, and a display mode that switches the types of measurement and calculation results displayed by the display section in a predetermined order every time a suppression operation is performed. A vehicle measuring device comprising a switch, wherein when the display mode selector switch is suppressed for a certain period of time or more, the display section displays a message indicating that the display mode changeover switch is suppressed. A measuring device for a vehicle, characterized in that the type of measurement calculation result is automatically switched according to a predetermined order.