JP2008082909A - Altimeter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an altimeter capable of easily receiving information at a desired moving altitude without being accompanied by complication or error. <P>SOLUTION: A user previously inputs an alarm altitude for generating an alarm with a relative altitude, and stores the altitude of the point as a base altitude by switch operation. In this state, the altimeter calculates an altitude from obtained pressure data every measuring timing (step S302). When announcing of the alarm is set at B=1 (step S303; YES), the altimeter determines whether "measuring altitude - base altitude = alarm altitude" is established in step S304. When "measuring altitude - base altitude = alarm altitude" is established, the difference between the measured present altitude and the base altitude arrives at the preset alarm altitude, the altimeter goes to the announcing processing of step S305, and drives a buzzer to announce the arrival at the alarm altitude. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an altimeter that generates an alarm when reaching a set altitude.

Conventionally, an altimeter that generates an alarm when a set altitude is reached has been proposed. This altimeter is designed to generate an alarm when the target altitude is reached by setting the target altitude in advance, and the target altitude is set by inputting an absolute altitude (altitude). Then, the input target altitude (elevation) is compared with the measured altitude measured at each predetermined timing, and an alarm sound is generated when the measured altitude reaches the target altitude (elevation) (for example, Patent Literature 1).
No. 7-33130

  By the way, in climbing or the like, it is preferable that the climbing operation and the break are arranged in a balanced manner in order to prevent excessive fatigue accumulation. In view of this, it is conceivable to use the altimeter having an alarm generation function to generate an alarm sound every time a desired altitude is moved and intermittently take a break at each appropriate moving altitude. In such a usage mode, after reaching the target altitude and taking a break in response to the alarm sound, the next target altitude is reset.

  However, in the altimeter that sets the target altitude as an absolute altitude, when setting the next target altitude, the user calculates the absolute altitude that becomes the target altitude by adding the desired altitude to the absolute altitude at the local point. Later, the calculated absolute altitude must be set as the target altitude, which makes the setting of the target altitude complicated. In addition, since the target altitude is calculated by the user when setting in this way, there is a case where there is an error in the set target altitude, and it is possible to realize a usage mode in which a break is intermittently performed at each appropriate moving altitude. It becomes difficult.

  The present invention has been made in view of such conventional problems, and an object of the present invention is to provide an altimeter that can easily receive a notification at a desired moving altitude without complications and errors.

  In order to solve the above-mentioned problem, in the altimeter according to claim 1, the altitude detecting means for detecting the altitude of the point and the alarm altitude memory for storing the alarm altitude which is a relative altitude input from the outside. Means, base altitude storage means for storing the base altitude, operating means, and when the operating means is operated, the absolute altitude detected by the altitude detecting means is stored as the base altitude in the base altitude storing means. Based on the altitude detected by the altitude detecting means, a discriminating means for discriminating whether or not the alarm altitude has moved from the base altitude, and based on the discrimination result of the discriminating means, And a notification means for performing notification when the alarm altitude moves.

  Further, in the altimeter according to claim 2, when the remaining altitude calculated by the calculating means and the remaining altitude calculated up to the alarm altitude is less than a predetermined level, the remaining altitude is calculated. And a display means for displaying the altitude.

  Moreover, in the altimeter according to the invention of claim 3, the display means further displays the absolute altitude calculated by the altitude calculating means and the relative altitude from the base altitude. .

  The altimeter according to claim 4 is characterized in that the alarm altitude storage means stores an alarm altitude consisting of a predetermined relative altitude in response to a one-touch operation.

  According to the present invention, by inputting an alarm altitude that is a relative altitude, it is possible to notify when the alarm altitude is moved up or down. Therefore, the user does not need to calculate the target altitude when inputting. Therefore, it is possible to receive a notification at a desired moving altitude without complications and errors in the user.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In this embodiment, the present invention is applied to a wristwatch, and this wristwatch has a main body case 1 as shown in FIG. Note that the illustration of the watch band is omitted. A display unit 2 is provided on the upper surface of the main body case 1. The display unit 2 displays a relative altitude display area 3 for displaying a relative altitude, an absolute altitude display area 4 for displaying an absolute altitude, and a current time. A time display area 5 to be displayed, a countdown graphic unit 6 for performing a cant down display to an alarm altitude described later, and the like are provided.

  FIG. 2 is a block diagram showing a circuit configuration of the wristwatch. The oscillation circuit 7 is a circuit that generates a clock signal having a fundamental frequency, and outputs the generated clock signal to the frequency divider circuit 8. The frequency dividing circuit 8 divides the clock signal to create a time signal of 1 Hz and outputs it to the time counting circuit 9. The time counting circuit 9 has an hour, minute, and second counter, and outputs hour, minute, and second time data obtained by counting a time signal of 1 Hz to the CPU 10. The time counting circuit 9 outputs a day carry signal every 24 hours to the date counting circuit 11, and the date counting circuit 11 outputs date data obtained by counting the day carry signal to the CPU 10.

  Although not shown, the switch unit 12 is a mode switch S1 for switching between a time display mode and an altimeter mode, a switch S2 for switching to a preset mode for setting an alarm altitude in the altimeter mode, and the measured altitude reaches the alarm altitude. It is composed of a switch S3 for turning on / off the alarm sound of the alarm sound, a switch operated for adjusting the time, and the like, and outputting these operation signals to the CPU 10.

  The CPU 10 is a central processing unit that decodes various programs stored in the built-in ROM 13 and executes switch processing, time display processing, measurement processing, and the like, and current time data obtained by the time display processing and measurement processing, and A RAM 14 having various registers for storing altitude data and the like is provided. The pressure sensor 15 is a sensor that detects atmospheric pressure, converts it into an electrical signal, and outputs it. The signal from the pressure sensor 15 is converted into digital pressure data by the A / D conversion circuit 16 and output to the CPU 10. The pressure sensor 15 and the A / D conversion circuit 16 operate only when a measurement signal C having a fixed period from the CPU 10 is given in order to reduce the power consumption of the circuit during altitude measurement, and perform pressure measurement. It has become.

  The display unit 2 comprises a liquid crystal display or the like, and drives the display elements of the display based on current time data or altitude data output from the CPU 10 to display the data. The buzzer 17 reports an alarm sound in response to an instruction from the CPU 10, and reports an alarm sound to the user when the altitude measured in the altimeter mode reaches a preset alarm altitude.

  Next, the operation of the present embodiment according to the above configuration will be described. FIG. 3 is a flowchart showing the overall processing flow. In the state where the power is turned on, first, it is determined whether or not there is a switch input in step S101. If there is no switch input, the process proceeds to step S102, and the value of the mode register M is any of “0”, “1” and “2”. Is determined. If the time display mode is M = 0 in step S102, the time display process in step S103 is executed.

  In this time display process, the hour, minute, and second time data and year, month, and day date data output from the time counting circuit 9 and the date counting circuit 11 of FIG. 2 are stored in a register (not shown) of the RAM 14. The data is output to the display unit 2 and displayed in the time display area 5 as the current time and date. Therefore, by this time display processing, as shown in FIGS. 1A to 1C, the current time in the time display area 5 changes.

  If the preset mode is M = 2 in step S102, the alarm altitude / reference altitude setting process in step S104 is executed. In order to correct the altitude error caused by fluctuations in atmospheric pressure at the time of measurement, if a point where the altitude is known in advance, for example, a point with an altitude of 0 m is designated as the reference altitude before the start of measurement, the barometric pressure at that point is taken in. The reference altitude register BH and the reference pressure register BP of the RAM 14 store “0 m” and the atmospheric pressure at that point. At the time of measurement, altitude data at each measurement point is calculated based on the reference pressure at this reference altitude.

  In setting the alarm altitude, the alarm altitude is set to a relative altitude (“1000 m” in the present embodiment), and the relative altitude (“1000 m”) is stored in the alarm altitude register AH of the RAM 14. That is, in the present embodiment, a predetermined relative altitude is set as the alarm altitude by performing a one-touch operation on the switch S2 for switching to the preset mode (M = 2) in the altimeter mode.

  In step S102, if the altimeter mode is M = 1, the measurement process in step S105 is executed to perform altitude measurement at each predetermined measurement timing. This altitude measurement process will be described in detail later. Subsequently, the time, relative altitude, and absolute altitude display processing is executed to update the display states of the relative altitude display area 3, the absolute altitude display area 4, and the time display area 5 (step S106).

  Next, it is determined whether or not the value of the alarm register B is “1” (step S107). If the value of the alarm register B is “0” and no alarm is set, steps S108 to S108 are started. The process proceeds to END without executing the processing of S110. When the value of the alarm register B is “1” and the alarm is set, the difference between the alarm altitude (relative value) set by the user and the relative altitude is calculated (step S108).

  That is, FIG. 1A shows a display state when the switch S3 is operated in the altimeter mode (M = 1) as will be described later. At this point, the absolute altitude display area 4 displays “1515 m”, which is the altitude at the point and the base altitude described later. At this time, since the user has not started moving, the relative altitude that is the moving altitude from the base altitude “1515 m” is “000 m”. Further, in this embodiment, the alarm altitude is “1000 m”, and at this time, the difference between the alarm altitude and the relative altitude is “1000 m”, and “1000 m” is calculated.

  FIG. 1B shows a display state when the user moves up by 500 m from the base altitude (“1515 m”). At this time, the absolute altitude “2015 m” that is moved up by 500 m from the base altitude (“1515 m”) is displayed in the absolute altitude display area 4. Further, since the relative altitude that is the moving altitude from the base altitude “1515 m” is “500 m”, “+500 m” is displayed in the relative altitude display area. Also, since the difference between the base altitude (“1000”) and the relative altitude (“+500 m”) at this time is “500 m”, “500 m” is calculated. 1A and 1B, since the remaining altitude is 200 m or more, the countdown graphic unit 6 described later maintains the initial state.

  Next, it is determined whether or not the difference between the calculated alarm altitude and the relative altitude is 200 m or less (step S109). If the difference is 200 m or less, the countdown graphic unit 6 calculates in step S108. The remaining altitude, which is the difference between the alarm altitude and the relative altitude, is displayed in a graph (step S110). That is, FIG. 1C shows a display state at the time when the user has moved up 900 m from the base altitude (“1515 m”). At this time, the absolute altitude “2415 m”, which is 900 m higher than the base altitude (“1515 m”), is displayed in the absolute altitude display area 4. Further, since the relative altitude that is the moving altitude from the base altitude (“1515 m”) is “900 m”, “+900 m” is displayed in the relative altitude display area. Further, since the difference between the base altitude (“1000”) and the relative altitude (“+900 m”) at this time is “100 m”, “100 m” is calculated in step S108. Further, since the remaining altitude is 200 m or less, the countdown graphic unit 6 displays the remaining 100 m as a graph.

  On the other hand, when there is any switch input in step S101, the process proceeds to step S111 to execute switch processing. FIG. 4 is a more detailed flowchart of the switch process. First, in step S201, it is determined whether or not the mode switch S1 is operated. If it is an operation of the mode switch S1, the process proceeds to step S202 to determine whether or not the value of the mode register M is M = 0. If M = 0, that is, if the mode switch S1 is operated in the time display mode (M = 0), “1” is set in the mode register M to switch to the altimeter mode (step S203).

  If M ≠ 0 in the mode determination in step S202, the process proceeds to step S204, where it is determined whether M = 1. If the determination result is M = 1, that is, if the mode switch S1 is operated in the altimeter mode (M = 1), the mode register M is set to “0” to switch to the time display mode (step S205).

  On the other hand, if it is not operation of mode switch S1 in step S201, it will move to step S206 and it will be discriminate | determined whether it is operation of switch S2. If the switch S2 is operated, it is first determined whether or not the value of the mode register M is “1” (step S207). If M = 1, that is, if the switch S2 is operated in the altimeter mode (M = 1), “2” is set in the mode register M to switch to the preset mode (M = 2) (step S208).

  If M ≠ 1 in the mode determination in step S207, the process proceeds to step S209 to determine whether M = 2. If the determination result is M = 2, that is, if the switch S2 is operated in the preset mode (M = 2), “1” is set in the mode register M to switch to the altimeter mode (M = 1) (step 1). S210).

  If it is determined in step S206 in FIG. 4 that the switch S2 is not operated, the process proceeds to step S211 to determine whether the switch S3 is operated. If the switch S3 is operated, it is determined whether or not the value of the mode register M is “1” (step S212). If M = 1, that is, if the switch S3 is operated in the altimeter mode (M = 1), it is determined whether or not the alarm register B = 0 (step S213). If B = 0, the register B is set to “1” to set an alarm sound (step S214). If B ≠ 0, the register B is set to “0” and the sound is reported. Is set to cancel (step S215).

  If “1” is set in the register B in step S214, the pressure is measured by the pressure sensor 15, the altitude is calculated from the obtained pressure data (step S216), and the calculated altitude data is used as the base altitude. Is stored in the RAM 14 (step S217). Therefore, when the switch S3 is operated at a point of the absolute altitude “1515m” in the state of M = 1 as shown in FIG. 1A, the absolute altitude that is the altitude at the point is stored in the RAM 14 as the base altitude. It will be.

  If the switch S3 is not operated in step S211, it is determined that a switch other than the switches S1 to S3 has been operated, and the process proceeds to step S218 to determine other switches that perform time correction and the like. The detection process is executed.

  Next, the contents of the measurement process (step S105) in the flowchart of FIG. 3 will be described in more detail based on the flowchart of FIG. When switched to the altimeter mode (M = 1), for example, the presence / absence of a measurement timing signal (minute carry) at intervals of 1 minute is determined to determine whether it is a measurement timing (step S301). When it is the measurement timing, the pressure sensor 15 and the A / D conversion circuit 16 are operated to measure the pressure, the altitude is calculated from the obtained pressure data, and the calculated altitude data is stored in the current measurement altitude register H of the RAM 14. (Step S302). The absolute altitude stored in the current measured altitude register H is displayed in step S106, so that the values in the absolute altitude display area 4 change sequentially as shown in FIGS. 1 (a) to 1 (c). It will follow.

  Next, it is determined whether or not the alarm register B is “1” (step S303). If the alarm report sound is set at B = 1, the process proceeds to step S304 to determine whether or not “measured altitude−base altitude = alarm altitude” is satisfied. If “measured altitude−base altitude = alarm altitude” is satisfied, that is, if the difference between the current altitude being measured and the base altitude reaches a preset alarm altitude (“1000 m”). For example, the process proceeds to the sound processing in step S305, and the buzzer 17 is driven to report that the alarm altitude has been reached. Therefore, when the user listens to the sound emitted from the buzzer 17, the arrival at the alarm altitude which is a preset relative altitude can be known.

  In the above-described embodiment, the case where the user moves up has been described. However, even when the user moves down, an alarm can be operated with the arrival of the alarm altitude by similar processing. In this embodiment, a predetermined value (“1000 m”) is set as the alarm altitude according to the switch operation. However, an arbitrary value may be set by the user's input operation. Further, in the present embodiment, the alarm altitude setting process and the reference altitude setting process are simultaneously performed in step S104. However, after both are performed individually and the reference altitude setting process is performed, a predetermined altitude is set. Alarm altitude setting processing may be performed by switch operation. In addition, in the embodiment, the present invention is applied to a wristwatch with an altitude measuring function, but may be applied to an altimeter alone or another device having an altitude measuring function.

It is a display transition diagram of the case body of the wristwatch according to the embodiment of the present invention. It is a block diagram which shows the circuit structure of the wristwatch. It is a general flowchart which shows the process sequence of this Embodiment. It is a flowchart which shows the process sequence of a switch process. It is a flowchart which shows the process sequence of a measurement process.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Main body case 2 Display part 3 Relative altitude display area 4 Absolute altitude display area 5 Time display area 6 Countdown graphic part 7 Oscillation circuit 8 Dividing circuit 9 Time counting circuit 10 CPU
11 Date Counting Circuit 12 Switch Unit 13 ROM
14 RAM
15 Pressure sensor 16 A / D conversion circuit 17 Buzzer

Claims (4)

Altitude detection means for detecting the altitude of the point;
An alarm altitude storage means for storing an alarm altitude which is a relative altitude input from the outside;
Base altitude storage means for storing the base altitude;
Operation means;
Storage control means for storing the absolute height detected by the height detection means in the base height storage means as the base height when the operation means is operated;
Determining means for determining whether or not the alarm altitude has moved from the base altitude based on the altitude detected by the altitude detecting means;
An altimeter, comprising: an informing means for informing when the alarm altitude moves from the base altitude based on the discrimination result of the discriminating means. Calculating means for calculating the remaining altitude up to the alarm altitude;
The altimeter according to claim 1, further comprising display means for displaying the remaining altitude when the remaining altitude calculated by the calculating means is equal to or less than a predetermined level.   The altimeter according to claim 2, wherein the display means further displays an absolute height calculated by the height calculation means and a relative height from the base height. 4. An altimeter according to claim 1, wherein said alarm altitude storage means stores an alarm altitude consisting of a predetermined relative altitude in response to a one-touch operation.

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