JPH1047992A - Measured value displaying device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To shorten the time required for inspecting or adjusting indication by making the responsiveness easily changeable at the time of indicating measured values by providing a setting means for setting the responsiveness value which decides the responsiveness of indication at indication inspecting and adjusting time and normal operating time and a responsiveness switching signal input terminal and a set responsiveness value selecting means for selecting set responsiveness value. SOLUTION: When a responsiveness switching signal is inputted, an indicating angle calculating means 110 calculates a formula I by using the set value of a fuel gauge responsiveness selecting means 108 from a plurality of set values from a responsiveness value setting means 109. The N in the formula represents the set responsiveness value selected by means of the selecting means 108, with a smaller N value indicating slow responsiveness and a larger N value indicating faster responsiveness. The Dn , Dn -1, and dn respectively represent the present indicating angle, preceding indicating angle, and indicating angle corresponding to the present inputted fuel sensor signal. The indicating angle thus calculated is outputted to a movement driver 112 through an output section 111.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a measured value display device which can be used for a fuel gauge for indicating the remaining amount of fuel mounted on a vehicle and which can change the responsiveness when giving a measured value of a physical quantity. It is.

[0002]

2. Description of the Related Art FIG. 4 is a block diagram showing the configuration of a conventional measurement value display device used as a fuel gauge when checking and adjusting an instruction result. In the figure, 1
Is a cross-coil movement which is a pointer driving mechanism for indicating the remaining amount of fuel. The cross-coil movement includes a pair of X and Y coils arranged so as to cross each other at an angle of 90 ° and a magnetic field generated by the coils. It has a movable movable instruction magnet that is rotatably arranged. In this measured value display device, the response is slowed down by a damper mechanism made of silicon oil or the like in order to prevent fluctuations in the liquid level in the fuel tank due to vibration from appearing directly on the pointer. 2
Is an instruction inspection adjustment device for connecting a stabilized Vcc power supply to one coil of the cross coil movement 1 and supplying a fuel sensor signal indicating the remaining amount of fuel measured by a fuel sensor (not shown) to the other coil. It is.

Next, the operation will be described. FIG. 5 is a flowchart illustrating an instruction adjustment processing operation when the instruction adjustment is performed on the measurement value display device. The instruction adjustment for the measured value display device is performed in an inspection process before shipping the manufactured measured value display device. According to this flowchart, first, the power is turned on (step ST21).
Next, the fuel sensor signal to be supplied to the cross coil movement 1 is set to the first indicated test value, and is supplied to the cross coil movement 1 (step ST22). Then, it waits for at least 5 minutes or more until the indication of the pointer changes to the first indication test value and stabilizes (step ST23). This is because the response of the cross-coil movement 1 is slowed down by a damper mechanism using silicon oil or the like, and it takes time until the indication of the hands is stabilized. When 5 minutes or more have elapsed, it is next determined whether or not the instruction state is normal (step ST24). As a result, when it is determined to be "defective", the instruction is adjusted (step ST25), and the process returns to step ST22. On the other hand, “good” in step ST24
When it is determined that the instruction test value is sequentially changed (step ST27), the process proceeds to step ST23 and step S23.
T24 and step ST26 are repeated until the determination on the last indicated test value is completed. When it is determined in step ST26 that the determination on the last indicated test value has been completed, the power supply to which the cross coil movement 1 is connected is turned off (step ST28).

[0004]

Since the conventional measurement value display device is configured as described above, when performing the inspection or the adjustment of the instruction, it is necessary to wait a few minutes until the indication of the pointer is stabilized. In addition, there is a problem that it takes time for inspection and adjustment of the measurement value display device.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and the time required for instruction inspection and instruction adjustment can be easily varied by making it possible to easily change the responsiveness when giving an instruction for a measured value. It is an object of the present invention to obtain a measurement value display device capable of reducing the time.

[0006]

According to a first aspect of the present invention, there is provided a measurement value display device, comprising: a measurement value input terminal for inputting a measurement value of a physical quantity; Means for setting a responsiveness setting value for determining the responsiveness setting value during the instruction test adjustment or the responsiveness setting value during the normal instruction operation from among a plurality of responsiveness setting values set by the setting means. A responsiveness switching signal input terminal for inputting a responsiveness switching signal for selection,
Responsiveness setting value selecting means for selecting a responsiveness setting value at the time of the instruction test adjustment or a responsiveness setting value at the time of the normal instruction operation based on the responsiveness switching signal; Calculating means for digitally processing a measured value input from the measured value input terminal according to the responsiveness according to the set responsiveness set value, and calculating and calculating a display control amount corresponding to the measured value; And a measurement value display unit for giving an instruction corresponding to the display control amount.

According to a second aspect of the present invention, there is provided a measurement value display device, wherein the difference between the instruction value currently indicated by the measurement value display unit and the instruction value of the measurement value inputted this time is determined by the responsiveness setting value selection means. Based on the value divided by the selected responsiveness setting,
An arithmetic unit for obtaining a display control amount corresponding to the measurement value input this time from the measurement value input terminal is provided.

According to a third aspect of the present invention, there is provided a measurement value display device for selecting a small value of the response setting value during the instruction inspection adjustment, and selecting a large value of the response value during the normal instruction operation. This is provided with a value selecting means.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below. Embodiment 1 FIG. FIG. 1 is a block diagram showing a configuration for performing an instruction inspection and an instruction adjustment when the measured value display device of the first embodiment is applied to a fuel gauge. In the figure,
100 is a measured value display device, 101 is a measured value display device 10
The instruction adjusting device is connected to the instruction adjusting device. Reference numeral 102 denotes a Vcc power supply line connection terminal for connecting the Vcc power supply of the indication adjustment device 101 to the Vcc power supply line of the measurement value display device 100, and 103 designates a ground line of the indication adjustment device 101 and the measurement value display device 100. A ground line connection terminal for connecting to a ground line; 104, a responsiveness switching signal input terminal for inputting a responsiveness switching signal for selecting a responsiveness set value during instruction adjustment or normal instruction operation; A measurement value input terminal 106 for inputting a fuel sensor signal indicating the remaining amount in the tank, and an EEPROM 106 for storing instruction characteristic data during a normal instruction operation.

Reference numeral 107 denotes a microcomputer, but it can be configured as a custom IC. 108 is a responsiveness setting value setting means 10 based on the responsiveness switching signal.
9 is a fuel gauge responsiveness selecting means (responsiveness setting value selecting means) for selecting the responsiveness set value at the time of the instruction test and the instruction adjustment set at 9 or the responsiveness set value at the time of the normal instruction operation. Responsiveness setting value setting means 110 for setting a responsiveness setting value for determining the responsiveness of the instruction at the time of the instruction adjustment and at the time of the normal instruction operation, and 110 according to the responsiveness setting value selected by the fuel gauge responsiveness selecting means 108. Command angle calculation means (calculation means) for digitally processing a fuel sensor signal input from the measurement value input terminal 105 having responsiveness and calculating a command angle amount (display control amount) according to the fuel sensor signal; An output unit 111 outputs a designated angle amount calculated by the designated angle calculation unit 110.

Reference numeral 112 denotes a movement driver for supplying a drive current corresponding to the indicated angle amount to the cross coil movement 113. Reference numeral 113 denotes X and Y coils arranged so as to cross each other at an angle of 90 ° and a magnetic field generated by the coils. Is a cross-coil movement provided with a movable magnet for indication rotatably arranged under the control of the pointer. A pointer is provided by a movement driver 112 and a cross-coil movement 113 in accordance with the designated angle amount calculated by the designated angle calculation means 110. A measured value display unit for performing drive control and indicating a remaining amount in the fuel tank is configured.

Next, the operation of the instruction adjustment device 101 and the measured value display device 100 at the time of instruction inspection and instruction adjustment will be described. FIG. 2 is a flowchart showing the operation of the instruction adjustment device 101 when checking whether the instruction is good or bad, and FIG. 3 is a flowchart showing the operation of the measurement value display device 100. When performing the instruction inspection, first, the instruction adjusting device 101 is turned on by turning on a power switch (step ST1). Next, the responsiveness switching signal is set to the “L” level (step ST2). Then, the fuel sensor signal set to the first indicated test value is output to the measured value input terminal 105 (step ST3). On the other hand, as shown in the flowchart of FIG. 3, the measurement value display device 100 determines whether the responsiveness switching signal is at the “L” level (step ST11), and the responsiveness switching signal is “L”. When it is determined that the level is the level, the responsiveness setting value “N = 8” which determines the responsiveness of the instruction at the time of the instruction inspection and instruction adjustment set by the responsiveness setting value setting means 109.
Is selected by the fuel gauge responsiveness selecting means 108 (step ST12). When the responsiveness switching signal is at the “H” level, the responsiveness set value “N = 1024” is selected (step ST13). Then, the designated angle is calculated by the designated angle calculation means 110 using the selected responsiveness set value (step ST14). The calculation of this indicated angle is
This is performed according to the following equation (1).

[0013]

(Equation 1)

Here, N is a fuel gauge responsiveness selecting means 108.
The responsiveness setting value selected by (1) indicates that the responsiveness setting value N is a large value, indicating that the responsiveness is slow, and that the responsiveness setting value N is a small value indicates that the responsiveness is fast. Is shown. Dn is the current designated angle, Dn-1 is the previous designated angle, and dn is the designated angle corresponding to the currently input fuel sensor signal. The pointing angle calculated in this way is output from the pointing angle calculation means 110 to the movement driver 112 via the output unit 111 (step ST15).

Therefore, the responsiveness of the instruction in the normal instruction operation is in a slow state, and the responsiveness of the instruction is in an early state in the instruction inspection and the instruction adjustment. The pointer of the cross-coil movement 113 responds quickly to the fuel sensor signal given by (1) to give an instruction. Therefore, the instruction adjusting device 1
01 waits for at least 5 seconds in the next step ST4, and determines whether the indicated value is “good” or “bad” (step ST5). If it is "bad", the instruction is adjusted (step ST6). If it is "good", the fuel sensor signal set to the next instruction test value is output to the measurement value input terminal 105 (step ST8). The processing from step ST4 to step ST7 is repeated until the instruction inspection and the instruction adjustment for the fuel sensor signal set to the instruction inspection value are completed. When the inspection of the instruction is completed, the power is turned off (step ST9).

Therefore, according to the measured value display apparatus of the first embodiment, the response time of the instruction to the change of the fuel sensor signal becomes faster during the instruction inspection and the instruction adjustment, so that the time required for checking the instruction result and adjusting the instruction is increased. Can be shortened. In addition, the responsiveness to the change in the instruction of the fuel sensor signal at the time of the normal instruction operation is delayed, and the deflection of the pointer with respect to the fluctuation of the liquid level is suppressed. In the present embodiment, the responsiveness set values at the time of the instruction inspection and the instruction adjustment are both small responsiveness values, but it is also possible to select only one of them as needed. Needless to say. It is also possible to change the value of the responsiveness as needed.

[0017]

As described above, according to the first aspect of the present invention, the responsiveness setting value at the time of instruction inspection adjustment or the normal responsiveness operation time is selected from the plurality of responsiveness setting values set by the setting means. A responsiveness switching signal input terminal for inputting a responsiveness switching signal for selecting a responsiveness setting value in the responsiveness setting value or the responsiveness setting value at the time of the instruction inspection adjustment based on the responsiveness switching signal or at the time of the normal instruction operation Responsive setting value selecting means for selecting a responsiveness setting value in the step S, and digitally processing a measured value input from a measured value input terminal by a responsiveness corresponding to the responsiveness setting value selected by the responsiveness setting value selecting means. And a calculation means for calculating and calculating a display control amount according to the measurement value, and a measurement value display unit for giving an instruction corresponding to the display control amount calculated by the calculation means. The responsiveness setting value selecting means selects the responsiveness at the time of the instruction inspection adjustment based on the responsiveness switching signal, so that the responsiveness can be made faster than the responsiveness at the time of the normal instruction operation. This has the effect of reducing the time required for adjustment.

According to the second aspect of the present invention, the difference between the instruction value currently instructed on the measurement value display unit and the instruction value of the measurement value input this time is determined by the response set value selecting means. Since the display control amount corresponding to the measurement value input this time is obtained from the measurement value input terminal based on the value divided by the property setting value, the display control amount corresponding to the measurement value changes. There is an effect that the ratio can be varied by the responsiveness set value, and the responsiveness when indicating the measured value can be adjusted by the responsiveness set value.

According to the third aspect of the present invention, there is provided a responsiveness setting value selecting means for selecting a small responsiveness setting value during the instruction inspection adjustment and selecting a large responsiveness setting value during the normal instruction operation. With this configuration, the responsiveness at the time of the instruction inspection adjustment can be increased, and the responsiveness at the time of the ordinary instruction operation can be reduced. Therefore, the time required for checking the instruction result and adjusting the instruction can be reduced. There is.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a measurement value display device according to a first embodiment of the present invention.

FIG. 2 is a flowchart showing an operation of the instruction adjusting device when performing an instruction inspection adjustment of the measurement value display device according to the first embodiment of the present invention.

FIG. 3 is a flowchart showing an operation of the measurement value display device according to the first embodiment of the present invention.

FIG. 4 is a block diagram showing a configuration of a conventional measurement value display device.

FIG. 5 is a flowchart showing an operation of the conventional measurement value display device when performing an instruction inspection adjustment.

[Explanation of symbols]

104 responsiveness switching signal input terminal 105 measured value input terminal 108 fuel gauge responsiveness selecting means (responsiveness setting value selecting means) 109 responsiveness setting value setting means 110 indicated angle calculating means (arithmetic means) 112 movement driver (measured value display) Part) 113 crossed coil movement (measured value display part)

Claims (3)

[Claims] 1. A measurement value input terminal for inputting a measurement value of a physical quantity, responsiveness setting value setting means for determining responsiveness of an instruction at the time of instruction inspection adjustment and at the time of a normal instruction operation, A responsiveness switching signal input terminal for inputting a responsiveness switching signal for selecting a responsiveness setting value at the time of the instruction inspection adjustment or a responsiveness setting value at the time of the normal instruction operation from a plurality of responsiveness setting values; A responsiveness setting value selecting means for selecting a responsiveness setting value at the time of the instruction test adjustment or a responsiveness setting value at the time of the normal instruction operation based on the responsiveness switching signal; and Calculating means for digitally processing a measurement value input from the measurement value input terminal with a response according to the selected response setting value, and calculating and calculating a display control amount according to the measurement value; And a measurement value display unit for giving an instruction corresponding to the display control amount calculated by the calculation means. 2. An arithmetic unit includes a display control amount corresponding to a measurement value input this time from a measurement value input terminal, an instruction value currently indicated on a measurement value display unit, and an instruction of the measurement value input this time. 2. The measured value display device according to claim 1, wherein a difference from the value is obtained based on a value obtained by dividing the difference by a responsiveness set value selected by the responsiveness set value selecting means. 3. The responsiveness setting value selecting means selects a responsiveness setting value of a small value at the time of instruction inspection adjustment, and selects a responsiveness setting value of a large value at the time of normal instruction operation. 2. The measured value display device according to 2.