JPH09264755A - Apparatus and method for measuring - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to effectively set a correction value with user's anxiety by eliminating the indistinguishability in displaying altitude by the user in the case of correcting the altitude in an electronic clock having the functions of periodically measuring the altitude and displaying it. SOLUTION: When a set input switching unit 13a is switched to correct, a second measured value is measured by a measuring unit 20, the value is stored in a first memory 16a, the difference from the first measured value of the constant time measured value displayed is calculated and set as a second correction value in a third memory 16c. The user sets a first correction value for the first value displayed in a second memory 16b. The following first measured value is corrected by the first and second correction values.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to altitude, atmospheric pressure, such as a portable altitude measuring device using a pressure sensor.
The present invention relates to a measuring device and a measuring method for periodically measuring and displaying physical quantities such as depth, temperature, and humidity.

[0002]

2. Description of the Related Art Portable devices have been developed and used that regularly measure and display various physical quantities such as altitude, atmospheric pressure, depth and temperature. For example, an electronic timepiece equipped with a diffusion type semiconductor sensor and having a function of measuring atmospheric pressure and altitude using the sensor has been put into practical use.

FIG. 4 shows a structural example of an electronic timepiece having a pressure sensor built therein. The electronic timepiece 10 is mainly composed of a microcomputer 1 having a timekeeping function and various control functions. An input circuit 2 for inputting data to the microcomputer 1 and a liquid crystal display (LCD) for displaying data. It is provided with a panel 3, a pressure sensor 4, and an A / D conversion circuit 5 for analog / digital converting the measurement value acquired by the pressure sensor 4. The microcomputer 1 includes an oscillating circuit 11 that oscillates a reference signal having a predetermined frequency, a frequency dividing circuit 12 that divides the reference signal to generate a signal for clocking or a clock signal of a processing circuit, a clocking function, and the like. An interrupt control circuit 13 for controlling input switching of the functions of the above, a control circuit 14 for controlling the processing selected by the interrupt control circuit 13, a ROM 15 in which each processing process is stored, and various types of processing necessary for the processing. RAM 16 for storing the data of Further, the microcomputer 1 includes an input control circuit 17 for controlling the input circuit 2 and processing the input data.
And a display control circuit 18 for controlling the display of the LCD panel 3.
And a measurement control circuit 19 that performs measurement-related processing and control
It has.

FIG. 5 shows in more detail the structure relating to the measurement of the physical quantity of the electronic timepiece, in which the pressure sensor 4 measures the atmospheric pressure, converts it to an altitude, and displays it.
First, the sensor 4, the A / D conversion circuit 5, and the conversion unit 19a in the measurement control circuit 19 having a function of highly converting the atmospheric pressure obtained by the sensor 4 are measured by the measurement unit 20.
The measurement value obtained by the measurement unit 20 is stored in the first memory 16a in the RAM 16. The measured value stored in the first memory 16a is the control circuit 1
The correction value stored in the second memory 16b is corrected by the fourth calculation unit 14a, and the corrected measurement value is supplied to the display control circuit 18 and displayed on the LCD panel 3.

The correction value set in the second memory 16b can be changed by the user via the input circuit 2. First, the setting input switching section 1 of the interrupt control circuit 13 is changed.
3a activates the correction value setting function, and then the setting input section 17 using the input circuit 2 and the input control circuit 17
The correction value of the second memory 16b is changed via a.

In a portable device that displays a physical quantity such as altitude or atmospheric pressure, the physical quantity is regularly measured (for example, to reduce the power consumption related to the measurement while avoiding competition with other functions). This is done after a certain period of time) and the displayed measurement value is updated.

[0007]

FIG. 6 schematically shows how the portable device as described above, for example, an electronic timepiece, is used to display altitude on a mountain road where the altitude gradually changes. First, at time t1, the regular measurement is performed at a position where the actual altitude is 90 m, and the result of correction is 85 m, and the value is displayed on the LCD panel. Then, the timed measurement is performed again at time t2 after the lapse of T0,
An altitude of 95 m is displayed for an actual altitude of 100 m. further,
Regular time measurement is performed at time t3 after the lapse of T0 time, and the actual altitude 1
The altitude of 105m is displayed for 10m.

At time t4 before the next scheduled measurement is performed,
Since the user has reached the place where the actual altitude of 120 m is displayed, the user corrects the altitude. In order to simplify the following description, it is assumed that the correction value was 0 until time t3. In the electronic timepiece described above, first, when the setting input process is started by the setting input switch 13a, the measuring unit 20 measures at an actual altitude of 120 m, and the altitude 115
Since the result of m is obtained, its value is the first memory 1
6a is set, and an altitude of 115 m is displayed. Therefore,
The user corrects the display of the altitude 115m to the display of the altitude 120m by the setting input 17a, and the corrected value is stored as the correction value in the second memory 16b. As a result, the error of 5 m in the measurement value of the measuring unit 20 is corrected. Therefore, after the setting input, for example, when a measurement value of 110 m is obtained from the measurement unit 20 at the position of the actual altitude 115 m at the time t5 which is the time of the next scheduled measurement, the calculation unit 14a changes the value of the second memory 16b to the value. Corrected based on LC
The corrected altitude of 115 m is displayed on D3.

As described above, in the electronic timepiece having the function of changing the correction value, the user corrects the displayed value based on the actual altitude to correct the error in the altitude display due to the fluctuation of the atmospheric pressure at any time. be able to. However, in order to display the altitude with high accuracy, it is necessary to input a correction value for the measurement result of the measuring unit at the time of correction. Therefore, when setting the correction value, it is necessary to obtain the measurement value from the measuring unit each time, and the value is L
It is displayed on CD3. Therefore, if the user tries to set a correction value, the altitude display is suddenly changed, which is confusing. Further, if the correction value is set and the altitude display is suddenly updated, it becomes difficult to obtain the reliability of the previous display value or the changed display value. Therefore, it is desirable that the altitude display is not easily updated so that the user can set the correction value with confidence and confidence.

In order to make it clear that the measured value is the measured value at the time of setting the correction value, there is a method in which the user manually operates the measuring unit to acquire the measured value before inputting the correction value. However, the number of operations for setting the correction value increases, and if the measurement before setting the correction value is not performed, the error may further increase.

Therefore, in the present invention, it is possible to automatically obtain the measured value when setting the correction value,
Further, another object of the present invention is to provide a measuring device and a measuring method that allow a user to set a correction value in a reliable and reliable manner without the phenomenon that the display altitude is suddenly changed. Then, it is an object of the present invention to provide a measuring device and a measuring method capable of easily correcting a measured value displayed by a user and displaying a highly reliable measured value.

[0012]

Therefore, in the present invention, the second measurement value measured when setting the correction value is not displayed, but the difference from the already displayed first measurement value is displayed. Is obtained as the second correction value, and the first correction value set by the user for the displayed first measurement value is set as the second correction value.
It is used in addition to the correction value of (1) to correct the first measured value measured thereafter. That is, the measuring device of the present invention comprises a measuring means for measuring a predetermined physical quantity, a first storing means for measuring the physical quantity and storing it as a first measured value, and a first storage value for the second storing means. First set to
Correction means for correcting the correction value by the correction value, display means for displaying the first measurement value corrected by the correction means, and second
Setting means for setting the first correction value in the storage means of
And a third storage unit that stores a difference between the second measurement value and the first measurement value at that time as a second correction value when the physical quantity is measured by the measurement unit when setting the correction value Further, the correction means is characterized in that, when the first correction value is set, the first measurement value is corrected by the first and second correction values.

In the measuring device of the present invention, a predetermined physical quantity is measured, the measured first measured value is corrected, and the corrected first measured value is displayed. Then, when setting the correction value, the first correction value for the first measurement value is input, and at the same time or before or after this, the physical quantity is measured, and the measured second measurement value and The difference between the first measurement values is obtained as the second correction value. Then, the first measurement value is corrected by these first and second correction values. After setting the correction value and before obtaining the next first measurement value, if the display is refreshed by the stored first measurement value, after setting the first correction value, the first measurement value is set. It is desirable to set the second measurement value as the value. Alternatively, the first measurement value may be remeasured immediately after setting the first correction value.

In many measuring devices, measurement is performed periodically, whereas correction setting input is performed aperiodically. In the measuring apparatus and the measuring method of the present example, the second measured value at the time of correction can be corrected without changing the display of the first measured value that is regularly measured. It is possible to surely perform the correction input without causing confusion, or to automatically set the correction value for the second measurement value when the display of the first measurement value is the same.

[0015]

Embodiments of the present invention will be described below with reference to the drawings. Hereinafter, the present invention will be described in more detail based on an electronic timepiece having an altitude display function according to the present invention. The schematic configuration of the electronic timepiece is similar to that described above with reference to FIG. Omit it.

FIG. 1 shows a configuration related to altitude display of the electronic timepiece of this example having the altitude display function of this example. In the electronic timepiece of this example, the measurement unit 20 is configured by the sensor 4, the A / D conversion circuit 5, and the conversion unit 19a having a function of converting the atmospheric pressure obtained by the sensor 4 into altitude. The measurement value obtained by the measuring unit 20 is 2
It is supplied to either the first memory 16a or the arithmetic unit 23 via a selector 22 having two gates 21a and 21b. The value periodically measured by the measuring unit 20 is supplied to the first memory 16a as the first measured value. On the other hand, the value measured by the measurement unit 20 when setting the correction value is supplied as the second measurement value to the calculation unit 23 that calculates the difference with respect to the first measurement value stored in the first memory 16a. It

The first measurement value stored in the first memory 16a is the same as the first correction value stored in the second memory 16b in the calculation units 14a and 14b constituting the correction processing unit 26. It is corrected by the second correction value stored in the third memory 16c. These first and second
The first measurement value corrected by the correction value of 1 is displayed on the LCD panel 3 via the display control circuit 18.

The second measurement value supplied to the arithmetic unit 23 is
The difference from the first measurement value stored in the first memory 16a is calculated, and the difference is stored in the second value in the third memory 16c.
Is stored as a correction value. In the second memory 16b, the value set by the user for the first measurement value displayed on the LCD panel 3 at the time of correction, that is, the difference between the actual height and the first measurement value is the first correction. It is stored as a value.

As a function of correcting the altitude display displayed on the LCD panel 3, a setting input switching unit 13a is provided as in the above electronic timepiece, and the setting input switching unit 13a is provided.
When is turned on, the correction value input signal 29 is output. The measurement unit 20 performs measurement by the correction value input signal 29,
The selector 22 supplies the measurement value of the measurement unit 20 to the calculation unit 23. Then, the gate 24 connecting the calculation unit 23 and the first memory 16a is turned on, the difference between the first measurement value and the second measurement value is calculated in the calculation unit 23, and the second correction is performed in the third memory 16c. The value is set. On the other hand, the gate 25 that connects the calculation unit 14b that performs the correction calculation based on the second correction value of the third memory 16c has the correction value input signal 29
Turned off by the first memory stored in the first memory
The correction based on the second correction value for the measurement value of is not performed. On the other hand, when the first correction value is set in the second memory 16b from the setting input 17a, the correction calculation is performed in the calculation unit 14a based on the first correction value, and the altitude displayed on the LCD panel 3 changes. .

The operation of setting the correction of the altitude display in the electronic timepiece of this embodiment will be described with reference to the flow chart shown in FIG. Further, similar to the case described above with reference to FIG. 6, description will be given based on the case where the actual altitude 120 m is corrected at time t4. First, in step 31, it is determined whether or not the correction input is selected by the setting input switching unit 13a. If the correction value input is selected, step 32
At, the correction value input signal 29 is sent to the measuring unit 20 to perform measurement. In this example, in step 32, the altitude at time t4 in FIG. 6, that is, 115 m is obtained as the second measurement value. Next, in step 33, the first measurement value stored in the first memory 16a is set for the second measurement value.
Of the measured value, that is, the difference from 105 m is calculated, and the difference, that is, −10 m is set as the second correction value in the third memory 16c.

Subsequent to these steps or before or after, these steps may of course be performed, but in step 34, setting input for correction of the display value is performed. In this example, the first measurement value stored in the first memory 16a, that is, 105
m is displayed, and the actual altitude (120 m) corresponding to this
The user sets and inputs the difference. Therefore, 15 m is set as the first correction value in the second memory 16b.

In this step 34, the user sets the correction value. As shown in FIG. 3A, the altitude display displayed on the LCD panel 3 before the correction is 10
It is 5 m, and thereafter, the user sets the correction only by correcting the display of 105 m to the display of the actual altitude 120 m shown on the mountaintop or the like. That is, when the correction value input is selected in step 31, the altitude display 3a of the LCD panel 3 flickers, indicating that the correction value input of the altitude display value is selected. Next, in step 34, the user corrects the flicker altitude display value 3a to 120 m as shown in FIG. 3 (b). After the correction, if the user does not operate the electronic timepiece within the predetermined time, the corrected altitude display value is adopted, the flicker is stopped, and the first correction value of the second memory 16b is changed.

When the first and second correction values are set,
Returning to step 31, regular altitude measurement is performed. Then, in the subsequent periodic altitude measurement, correction is performed using these correction values. Therefore, in the regular measurement at time t5 in FIG. 6, first, at step 36, it is determined whether or not a certain time has elapsed. After a lapse of time, the altitude is measured by the measuring unit 20 in step 37, and a value 5 m lower than the actual altitude obtained by the measuring unit 20, that is, 110 m is set as the first measured value in the first memory 16a. It Then, in step 38, the first measurement value set in the first memory 16a is corrected as follows according to the following equation (1).

Altitude stored in the first memory (110 m) + second correction value (-10 m) + first correction value (15 m) = actual altitude (115 m) (1) Therefore, after correction In step 39 for displaying the value of, the actual altitude of 115 m is displayed on the LCD panel 3.

Therefore, even in the measuring device that refreshes the display after the correction value is set, proper altitude display can be performed. In addition, when the setting input of the correction value is completed, the second measurement value measured by the correction value input signal 29 is replaced with the first measurement value obtained by the previous scheduled measurement, and the second measurement value is stored in the first memory 16a. The stored measurement value may be updated. Further, after the setting of the correction value is completed, the measurement unit 20 may perform the measurement again to obtain the first measurement value.

As described above, in the electronic timepiece of this example,
When correcting the altitude display, the latest altitude measurement at that time is automatically performed, and the relationship between the second measurement value measured at that time and the displayed first measurement value is displayed. It can be processed inside the electronic watch. Therefore, the altitude display when performing the correction does not change unless the user manually corrects the altitude, and the display that is confusing to the user is unnecessary. Further, since the altitude display does not change immediately before the correction, the user can accurately and accurately correct the altitude display.

Further, even if the first measurement value that is periodically updated and displayed matches the actual altitude displayed on the summit or the like, the altitude may be different when measured by the measuring unit at that point. is there. For example, in FIG. 6, if the error of the measurement unit 20 at time t3 is +10 m, the display altitude is 120 m, and the actual altitude known to the user at time t4 and the altitude display match. However, in the measuring device adopting the conventional measuring method shown in FIG. 5, when the user makes a correction at time t4, the display changes to 130 m, which confuses the user and further increases to 120 m. It is necessary to set the display manually so that On the other hand, in the case of the measuring method and the measuring apparatus of this example, the altitude display remains unchanged at 120 m, and the error (−10 m) in the second measurement value measured by the measuring unit 20 is the first. It is automatically set as a correction value of 2. Therefore, the user only needs to operate the setting input switching unit 13a and does not need to input the first correction value in order to change the altitude display. Then, in the subsequent scheduled measurement, the error of the measuring unit 20 is corrected and displayed.
As described above, by using the measuring method and the measuring apparatus of the present example, the correction value for the error of the measuring unit 20 can be automatically set, and the user's labor can be minimized. Further, since the displayed numerical value does not change unnecessarily, it is not confusing, and it is possible to prevent adverse effects such as confusing the user and lowering the reliability of the displayed numerical value.

Further, in the measuring apparatus of this example, it is necessary to provide a logic for obtaining the second measured value and an area for storing the logic, which are used in a measuring apparatus such as a microcomputer or an electronic timepiece. It can be applied without increasing the circuit scale or memory in the control device or circuit. Therefore, the present invention improves the user-friendly function at a low cost with a simple configuration even for a small portable type small and lightweight measuring device such as an electronic timepiece, which enables more accurate altitude measurement. Is.

The configuration related to the altitude measuring device of the electronic timepiece of the present example shown in FIG. 1 is an example, and the present invention is not limited to this. Of course, these configurations can be configured by software on a microcomputer, or can be configured by a gate circuit, a wired logic, or the like. Further, in this example, the second correction value stored in the third memory,
A correction calculation is performed for each of the first correction values stored in the second memory, but a circuit configuration or a correction method different from that of this example, such as calculating and correcting these correction values in advance Of course, this is possible, and these changes in the configuration and method usually performed by those skilled in the art are included in the present invention based on the description of the claims.

Further, in the present example, the present invention has been described based on an example in which pressure is measured as a physical quantity, converted to altitude and displayed, but the physical quantity of the present invention is not limited to pressure and altitude. Absent. It is possible to predict and display the state of the atmosphere by the pressure, and it is also possible to display the depth. Further, the present invention is applicable to physical quantities themselves such as temperature, humidity, voltage or magnetic field, and a measuring device and a measuring method for converting these physical quantities into predetermined physical measurement values. The present invention is also effective for a measuring device that does not regularly perform the first measured value, and the correction value can be input without carelessly changing the displayed value. In particular, the present invention is very effective because the correction setting is input irregularly in an apparatus that regularly measures these physical quantities.

Furthermore, it goes without saying that the present invention is not limited to the measuring device and measuring method incorporated in the above electronic timepiece. Not limited to portable devices, it can be applied to measuring devices and measuring methods built into mobile devices such as automobiles, and also to devices that periodically measure physical quantities at the same point and their control methods. Is.

[0032]

As described above, according to the measuring device and the measuring method of the present invention, when the displayed measurement value is corrected, the latest measurement value is automatically obtained and the displayed measurement value is displayed. The error between the latest measurement value and is automatically set. Therefore, the user can set and input the correction value based on the displayed measurement value, and can set a reliable and reliable numerical value without being confused by the display change of the measurement value. Further, when the displayed measured value matches the actual physical quantity, the correction for the latest measured value is automatically set, so that the user only needs to operate one switch to accurately correct the measured value. Value input can be done automatically.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a measuring device for an electronic timepiece according to the present invention.

2 is a flowchart showing an operation of performing measurement and setting input of a correction value by the measuring device shown in FIG.

FIG. 3 is a diagram showing how the display of the electronic timepiece is changed by the operation shown in FIG.

FIG. 4 is a block diagram showing a general configuration of an electronic timepiece capable of altitude measurement.

FIG. 5 is a block diagram showing a configuration example of a conventional measuring device.

FIG. 6 is a diagram schematically illustrating an example of regularly performing altitude measurement.

[Explanation of symbols]

1 ... Microcomputer 2 ... Input circuit 3 ... LCD panel 4 ... Sensor 5 ... A / D conversion circuit 10 ... Electronic clock 11 ... Oscillation circuit 12 ... Dividing circuit 13 ... Interrupt control circuit 13a ..Setting input switching unit 14 ..Measurement control circuits 14a and 14b ..Correction arithmetic circuit 15 ..ROM 16 ..RAM 16a, 16b, 16c ..Memory for storing setting values and correction values 17 ..Input Control circuit 17a ... Setting input section capable of setting and inputting correction value 18 ... Display control circuit 19 ... Measurement control circuit 19a ... Altitude conversion circuit 20 ... Altitude measuring section 21, 24, 25 ... Gate 22 ..Selector 23 ... Circuit for calculating the difference between the first and second measured values 26 ... Correction circuit

Continuation of the front page (51) Int.Cl. ⁶ Identification number Office reference number FI technical display location G04G 1/00 315 G04G 1/00 315Z

Claims (5)

[Claims] 1. A measuring means for measuring a predetermined physical quantity, and a first means for measuring the physical quantity and storing it as a first measured value.
Storage means, correction means for correcting the first measurement value stored in the first storage means by the first correction value set in the second storage means, and the correction means corrected by the correction means. Display means for displaying a first measurement value, setting means for setting the first correction value in the second storage means, and the physical quantity by the measurement means when setting the first correction value. And a difference between the second measured value and the first measured value at that time is stored as a second correction value.
And a correction unit that corrects the first measurement value with the first and second correction values when the first correction value is set. . 2. The measuring device according to claim 1, wherein the measurement for obtaining the first measurement value is periodically performed. 3. A first step of measuring a predetermined physical quantity, a second step of correcting the measured first measured value, and a third step of displaying the corrected first measured value. A fifth step of inputting a first correction value for the first measurement value, and a fourth step of setting the correction value, and the fourth step of setting the correction value. Simultaneously with or before or after step 5, the physical quantity is measured, and a sixth step of obtaining a difference between the measured second measurement value and the first measurement value as a second correction value is provided. The third method corrects the first measurement value with the first and second correction values. 4. The measuring method according to claim 3, wherein the first measurement value is regularly measured. 5. The measuring method according to claim 3, further comprising a seventh step of setting the second measurement value as the first measurement value when the fourth step is completed.