JP3742160B2 - Electronic watch with water depth gauge - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a sensor-equipped electronic wristwatch that measures pressure by a sensor that is an electronic pressure detection means and displays water depth.
[0002]
[Prior art]
The development of electronic wristwatches in recent years has been remarkable, and electronic wristwatches with a sensor incorporating a sensor that is an electronic detection means for detecting physical quantities around the watch have been commercialized. As a representative example, an electronic wristwatch equipped with a water depth gauge is provided which is provided with a silicon diaphragm type semiconductor pressure sensor, which is an electronic pressure detecting means, on a wristwatch to measure and display the water depth. Furthermore, the electronic wristwatch with a water depth gauge has been designed to be multifunctional equipped with various diving information in addition to measuring the water depth. This multi-function can be easily multi-functionalized by displaying various diving information on the digital display unit, which is very convenient for the user.
[0003]
As one of the diving information, there is a dive alarm function that is an alarm sounding during diving used for safe diving. As the dive alarm function, there are a depth alarm that sounds when diving deeper than a set depth, a dive time alarm that sounds when diving exceeds a set dive time, an ascent warning alarm that sounds when abrupt ascent is performed, and the like.
[0004]
However, with respect to the dive alarm function, it is easy to set each dive alarm before diving, but it may be difficult to determine what alarm is generated even if the dive alarm sounds during diving. With this, there is no meaning of a dive alarm set for safe diving, and there is a risk of hindering safe diving. In particular, this tendency is remarkable because the dive time alarm sounds only once even if it is set.
[0005]
As a method for solving the above problems, by preparing alarm sounds of different tones corresponding to each dive alarm, it is possible to identify what alarm is sounded when the dive alarm is sounded during diving.
[0006]
[Problems to be solved by the invention]
However, the power of judgment is generally lower than that on land during diving, and there is a risk of misjudging what alarm sounded when a dive alarm sounded just by changing the tone. In addition, the dive alarm sound may not be heard depending on the diving environment, and the dive alarm that has been set for safe diving is meaningless because the dive is performed after the set depth or dive time. There was a problem that it was not useful for diving.
[0007]
An object of the present invention is to solve the above-mentioned conventional problems, and even if there is a lot of dive alarm information, an electronic wristwatch with a depth gauge that can easily read what alarm is sounding when the alarm sounds The purpose is to provide.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, the present invention is configured as follows. That is, a pressure sensor, a water depth calculation circuit that converts pressure detected by the pressure sensor into predetermined water depth data, a liquid crystal display unit that displays water depth based on a signal from the water depth calculation circuit, and a water depth measurement Dive alarm setting means for setting a plurality of dive alarm functions used in the water depth measurement mode to be displayed, and when dive alarm notification is set by the dive alarm setting means By switching the display of the liquid crystal display unit to the display unit or symbol display of the corresponding dive alarm, The display of the corresponding dive alarm and the display of another dive alarm Identify and display It is characterized by that.
In addition, when reporting a dive alarm, the corresponding The dive alarm display is blinking.
The dive alarm notification tone colors of the plurality of dive alarm functions are different from each other.
The dive alarm setting means further includes a dive time measuring means for measuring a dive time when the water depth data of the water depth calculation circuit exceeds a certain depth, and the dive alarm setting means is configured to alarm when a preset water depth is exceeded. A depth alarm setting means for sounding, a dive time alarm setting means for sounding an alarm when a preset dive time is exceeded, and an ascent speed warning alarm means for sounding an alarm when a certain ascent speed is exceeded. .
The diving time display during diving is characterized in that the display form is changed before and after the set time of the dive time alarm.
[0009]
By reading the display on the liquid crystal display when an alarm sound is sounding when the dive alarm function is activated, you can determine which dive alarm is sounding. It became so. In addition, the dive alarm notification tone of the plurality of dive alarm functions is made different, and the dive alarm display blinks, so that necessary information can be read more correctly by the ears and eyes. Also, with respect to a dive time alarm that sounds only once, it is now possible to easily determine whether the dive time alarm has been set or not by reading the display content on the liquid crystal display.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a circuit block diagram of an analog-digital display electronic wristwatch with a water depth gauge as an embodiment of the electronic wristwatch with a water depth gauge according to the present invention. In the figure, reference numeral 1 denotes an oscillator that outputs a reference signal, which is composed of a crystal resonator and an oscillation circuit. A frequency dividing circuit 2 divides the reference signal from the oscillator into a predetermined clock signal, and supplies a time signal, a time signal or other synchronizing signal to each part of the apparatus. 3 is a second clock counter, 4 is a minute clock counter, 5 is a clock clock counter, 6 is a day clock counter, 7 is a month clock counter, 8 is a day clock counter, 9 is a stopwatch counter, and 10 is a fixed depth in water depth measurement. Measure the above dive time It is a dive time measurement means It is a timer counter.
[0011]
Reference numeral 11 denotes a motor drive circuit in which a second hand 14, a minute hand 15, and an hour hand 16 are driven via a motor 12 and a train wheel 13, and a time is displayed with a pointer. Reference numeral 17 denotes a display switching circuit for switching the display of the liquid crystal display unit 19 which is a digital display unit, 18 denotes a liquid crystal drive circuit, and 19 denotes a liquid crystal display unit. A liquid crystal display unit is connected via the liquid crystal drive circuit 18 according to a signal from the display switching circuit 17. Each of the predetermined functions is displayed at 19.
[0012]
Connected to the display switching circuit 17 are a second time counter 3, a minute time counter 4, a clock time counter 5, a daily time counter 6, a month time counter 7, a day time counter 8, a stopwatch counter 9, and a timer counter 10. Furthermore, a 1 m or more detection circuit 25, an alarm setting circuit 29, a dive alarm setting circuit 30, a storage circuit 28, and a comparison circuit 35 in water depth measurement, which will be described later, are connected, and various information depending on the function by switch operation or dive alarm operation. Is selected and output.
[0013]
21 is a pressure sensor which is a silicon diaphragm type semiconductor sensor, 22 is an amplifier circuit, 23 is an analog-digital conversion circuit (hereinafter abbreviated as A / D conversion circuit), 24 is a water depth calculation circuit, 25 is a detection circuit of 1 m or more, Reference numeral 26 denotes a pressure sensor driving circuit. The pressure sensor drive circuit 26 activates the pressure sensor 21, the amplification circuit 22, the A / D conversion circuit 23, and the water depth calculation circuit 24 to convert pressure data into water depth data. The 1 m or more detection circuit 25 is a circuit for detecting the water depth data of 1 m or more. In the water depth measurement mode, when the water depth data exceeds 1 m, the diving is performed. When the water depth data is less than 1 m, the diving is not performed. Thus, the start or end of diving is determined, a set signal and a reset signal are output to the flip-flop 27, and the diving time is measured by the timer counter 10. Further, the detection circuit 25 of 1 m or more is connected to the display switching circuit 17, and the liquid crystal display unit 19 displays the water depth by the water depth data of the water depth calculation circuit 24. When the water depth data is less than 1 m, the water depth display is 0 m. Yes.
[0014]
A memory circuit 28 is connected to the minute counter 4, the clock counter 5, the date counter 6, the month counter 7, the timer counter 10, and the 1 m or more detection circuit 25, and performs diving with the above set signal and reset signal. The diving date, dive start time, maximum depth, and dive time are stored. This makes it possible to check log data in diving in a log mode in which various log data of diving date, diving start time, maximum depth during diving, and diving time are displayed.
[0015]
29 is an alarm setting circuit for setting an alarm ringing time in the time mode, and 30 is a water depth, dive time and ascent speed warning in the water depth measurement mode. Dive alarm setting means A dive alarm setting circuit, 34 is an ascent speed calculation circuit, 35 is a comparison circuit, 36 is an alarm drive circuit, and 37 is a sound generator. Here, the dive alarm is a depth alarm that sounds when it goes deeper than the set depth, a dive time alarm that sounds when the set dive time is exceeded, or an alarm when the ascent rate is higher than the preset ascent rate. The Ringing Of the ascending speed warning alarm Etc. Function, The dive alarm setting means 30 includes Corresponding to each function Depth alarm setting means Depth alarm setting circuit 31, Dive time alarm setting means Dive time alarm setting circuit 32, Ascent rate warning alarm means An ascent speed warning alarm circuit 33 is provided.
[0016]
In the water depth measurement mode, the dive alarm setting circuit 3 is used in the comparison circuit 35. 0 Each dive alarm is sounded by comparing the set value with water depth, dive time, and ascent rate. Since there are various types of alarms, it is difficult to determine which alarm is sounding. Therefore, by outputting different sounding signals from the alarm driving circuit 36, the timbre is changed for easy identification. When each alarm is sounding, the display switching circuit 17 switches the display to the display corresponding to the alarm and blinks the display. This makes it even clearer which alarm is sounding.
[0017]
38 is a switch control circuit, and 39 to 42 are external operation members. The switch control circuit 38 outputs various signals according to operations of the external operation members 39 to 42. In the present embodiment, when a switch of the external operation member 39 operated at the time of needle alignment is input, a reset signal 39a is output to control the motor drive circuit 11 and stop the pointer. On the other hand, each time the switch of the external operation member 42 is input, a mode switching signal 42a is output, and the display switching circuit 17 is operated by the mode switching signal 42a in each function of time mode, alarm mode, stopwatch mode, log mode, and dive alarm mode. The counters corresponding to are sequentially and selectively switched. As a result, information from the display switching circuit 17 is displayed on the liquid crystal display unit 19 via the liquid crystal driving circuit 18.
[0018]
Here, when the time mode is selected by the external operation member 42, the minute counter 4 and the clock counter 5 are input to the display switching circuit 17, and the hour and minute display time is displayed on the liquid crystal display unit 19. When the switch of the external operation member 40 is input in the above-described hour / minute display state, the second display switching signal 40a is output, and the second clock counter 3 is input in the display switching circuit 17 instead of the minute clock counter 4 and the clock counter 5. On the liquid crystal display unit 19, the minute display is switched to the second display. In addition, when the switch of the external operation member 40 is input in the second display state, a calendar display switching signal 40a is output, and the date clock counter 6 and the day clock counter 8 are input in the display switching circuit 17 instead of the second clock counter 3. The second display on the display unit 19 is switched to the day and day display.
[0019]
When the external operation member 40 is operated in the log mode, a log data switching signal 40b for sequentially selecting various log data in the storage circuit 28 is output. In addition, a start signal, a stop signal, a split signal, a reset signal, or a correction digit selection signal such as a time, a correction signal, and the like in the stopwatch mode are output, but description thereof is omitted.
[0020]
On the other hand, when a switch due to a long time operation of the external operation member 42 is input in the time mode, alarm mode, and stopwatch mode, the mode switching signal 42a is output once, and after shifting to each mode described above, the mode is switched to the log mode. Similarly, when a switch for a long time operation of the external operation member 42 is input in the log mode and the dive alarm mode, the mode switching signal 42a is output once, and after shifting to each of the aforementioned modes, the mode is shifted to the time mode. In this way, the two main modes, the normal time-related mode and the diving-related mode, are divided by the short-time / long-time operation of the switch, so that a small display screen is used as in this embodiment. When displaying various modes, the operation specification is easy to use and not complicated.
[0021]
Further, when the operation mode shifts to the log mode due to the long time operation of the external operation member 42, the initial value measurement signal 42b is output, the pressure sensor drive circuit 26 is driven, the pressure sensor 21, the amplification circuit 22, and the A / D conversion circuit. 23 is activated and pressure data is detected. The value at this time is stored in an initial value setting circuit (not shown) of the water depth calculation circuit 24. The value of the initial value setting circuit serves as reference data for water depth measurement in the water depth measurement mode, and the water depth is calculated based on this value.
[0022]
When the switch of the external operation member 41 is input in the log mode and the dive alarm mode, the water depth measurement signal 41a is output and the mode is switched to the water depth measurement mode. The pressure sensor drive circuit 26 is driven by the water depth measurement signal 41a, and water depth data of the water depth calculation circuit 24 and data of the timer counter 10 are input to the display switching circuit 17 via the detection circuit 25 for 1 m or more. To display the water depth. Here, in the water depth display, 0 m is displayed by the detection circuit 25 when the water depth is 1 m or less. On the other hand, when the external operation member 40 is operated in the water depth display state, the water depth display is switched to the display of the dive time on the liquid crystal display 19 only during the operation.
[0023]
In addition, in the water depth measurement mode, when the switch of the external operation member 41 is input in the 0 m display state where the water depth is 1 m or less, the water depth measurement end signal 41b is output and the log mode is switched. The pressure sensor drive circuit 26 is stopped by the water depth measurement end signal 41b, the log data of the storage circuit 28 is input to the display switching circuit 17, and the log data is displayed on the liquid crystal display unit 19. Here, one dive is completed by the water depth measurement end signal 41b. However, when 10 minutes have passed without operating the external operation member 41 in the 0 m display state in which the water depth after the ascent is less than 1 m, 1 m is returned again. If the diving exceeds the above, it is regarded as a new diving unlike the continued diving, and the diving time starts to be measured from 00 minutes 00 seconds. This is a clock specification that takes into account the water surface rest time during diving.
[0024]
2 to 9 are plan views of an analog-digital display electronic wristwatch with a water depth gauge in which the circuit block described in FIG. 1 is incorporated, in a state where the display content of the digital display unit is changed by switching the mode by switch operation. 2 shows the time mode, FIG. 3 shows the dive alarm mode, FIGS. 4 to 6 show the log mode, and FIGS. 7 to 9 show the water depth measurement mode.
[0025]
In FIG. 2A, reference numeral 43 denotes a watch case, and a pressure sensor (not shown) is provided on the protrusion 43a at the 9 o'clock position. 44 is a screw lock type crown ( (This corresponds to the external operation member 39 in FIG. 1) Thus, it is screwed to a screw portion (not shown) of the watch case 43. 45 to 47 are push buttons provided on the watch case 43 ( The push button 45 corresponds to the above-described external operation member 40 in FIG. 1, the push button 46 corresponds to the external operation member 41 in FIG. 1, and the push button 47 corresponds to the external operation member 42 in FIG. ) , 48 is a dial, 114 is a second hand, 115 is a minute hand, and 116 is an hour hand, which perform time display. Reference numeral 119 denotes a liquid crystal display unit, which displays a function from a notch 48 a provided on the outer periphery of the dial 48 at the 12 o'clock position. The display space of the liquid crystal display unit 119 can realize only a display of about 4 digits in consideration of the character size as in the present embodiment, and the function display is performed by switching the display.
[0026]
When the time mode is selected by operating the push button 47 as shown in the figure, the display switching circuit 17 described in FIG. 1 causes the liquid crystal display unit 119 to display the time / minute display (10:10 pm). Display). When the push button 45 is operated in the hour / minute display state, the liquid crystal display unit 119 is switched from the hour / minute display to the second display (not shown).
[0027]
2B is a state where the push button 45 is operated in FIG. 2A, and once the push button 45 is operated, the liquid crystal display unit 119 is switched to the second display as described above (not shown), and then pushed. When the button 45 is operated, the display content of the liquid crystal display unit 119 is switched to the Sunday display (25th and Friday are displayed) as a calendar display by the operation display switching circuit 17.
[0028]
FIG. 3 is a plan view of a dive alarm mode state in which alarms for water depth and dive time in a water depth measurement mode to be described later are set, and the liquid crystal display unit 119 displays DIVE of the dive mark 119a and AL of the alarm mark 119b. 3A shows a depth alarm for setting a water depth alarm, and FIG. 3B shows a dive time alarm for displaying a set of a dive time alarm. In the depth alarm shown in FIG. 3A, the liquid crystal display unit 119 displays the set depth (20 m is displayed) of the depth alarm that sounds when it becomes deeper than the set depth. If the push button 45 is operated in this state, the set depth is corrected in units of 1 m, and an arbitrary set depth is set (not shown).
[0029]
When the push button 47 is operated in the state of FIG. 3A, as shown in FIG. 3B, the liquid crystal display unit 119 displays the set time of the dive time alarm that sounds when the set dive time is exceeded (30 Minute is displayed). When the push button 45 is operated in this state, the set time is corrected in units of 5 minutes, and an arbitrary set time is set (not shown).
[0030]
In diving, diving depth and diving time have an important relationship with safety diving. Generally, you can check the relationship between diving depth and diving time on a diving table. And diving time alarm can be set, so it can be useful for safe diving.
[0031]
4, 5, and 6 are plan views of a log mode state in which recording of various data in each diving is called, and the liquid crystal display unit 119 displays LOG of the log mark 119 c and DIVE of the dive mark 119 a indicating the display contents. The Each time the push button 45 is operated in the log mode, the display contents are switched to call recording of various data for one dive. When the push button 46 is operated, another diving record is called (not shown).
[0032]
In FIG. 4A, the liquid crystal display unit 119 displays the number of dives (first display). This makes it possible to identify time series of log data described later.
[0033]
When the push button 45 is operated in the state of FIG. 4A, as shown in FIG. 4B, the liquid crystal display unit 119 displays the date of diving (displays October 30). .
[0034]
When the push button 45 is operated in the state of FIG. 4B, the start time of diving is displayed on the liquid crystal display unit 119 (10:48 am is displayed) as shown in FIG. 5A. In the liquid crystal display unit 119, the STA of the diving start mark 119d whose display content indicates the diving start time is displayed.
[0035]
When the push button 45 is operated in the state of FIG. 5A, the maximum depth is displayed (21.5 m is displayed) on the liquid crystal display unit 119 as shown in FIG. 5B. In the liquid crystal display unit 119, the maximum depth mark 119e MAX indicating the maximum depth is displayed.
[0036]
When the push button 45 is operated in the state of FIG. 5B, as shown in FIG. 6, the liquid crystal display unit 119 displays the dive time (displays 38 minutes and 09 seconds).
[0037]
In this way, in the log mode, the various diving data recorded can be called by switching the display on the liquid crystal display unit 119, which is practically very convenient for the user.
[0038]
7, 8, and 9 are plan views of each state in which the depth measurement mode is selected by operating the push button 46 in each of the log mode and the dive alarm mode described above. When the push button 46 is operated to switch to the water depth measurement mode, the dive mark 119a DIVE is displayed blinking on the liquid crystal display unit 119 (not shown), and the blinking display is canceled when 1 m or more is displayed. In the water depth measurement mode state, the pressure sensor driving circuit 26 described with reference to FIG. 1 operates the pressure sensor 21, the amplification circuit 22, the A / D conversion circuit 23, the water depth calculation circuit 24, and the detection circuit 25 for 1 m or more. While converted to water depth data, the diving time is measured by the timer counter 10. In the depth display of FIG. 7A, the liquid crystal display unit 119 performs water depth display (displays 12.5 m).
[0039]
When the push button 45 is operated in the depth display state of FIG. 7A, the state shifts to the diving time display state as shown in FIG. 7B, and the liquid crystal display unit 119 displays the diving time (displays 28 minutes 57 seconds). Is doing. When the operation of the push button 45 is released, the liquid crystal display unit 119 automatically switches from the diving time display to the depth display as shown in FIG.
[0040]
8 and 9 show a state where the set value of the dive alarm set in FIG. 3 is exceeded in the water depth measurement mode of FIG. FIG. 8A shows a state in which the depth alarm is sounded in a state where the depth alarm set value 20 m shown in FIG. , The liquid crystal display unit 119 is It is the display unit of the set depth alarm The water depth display blinks. As a result, it is possible to prompt the user to warn what alarm has been generated due to a change in the display state together with the alarm sound.
[0041]
FIG. 8B shows a state where the set value of the dive time alarm is exceeded. In the state of diving exceeding the set value 30 minutes of the dive time alarm shown in FIG. 3A (dive time 30 minutes 08 seconds), the dive time alarm sounds and the liquid crystal display unit 119 displays the water depth display. This is the display unit for the set dive time alarm. Automatically switch to display the dive time and blink. As a result, as with other alarm sounds, it is possible to prompt the user to warn what alarm has been generated due to a change in display.
[0042]
FIG. 9A shows a state in which rapid ascent is performed in the water depth measurement mode of FIG. When ascending more rapidly than the set value of the ascent speed warning alarm circuit 33 described in FIG. 1, a warning ascent warning alarm sounds and the liquid crystal display unit 119 displays a water depth display. The abbreviation symbol of the set ascent speed warning alarm SLW " And automatically switch to " SLW " Display blinks. As a result, as with other alarm sounds, it is possible to prompt the user to warn what alarm has been generated due to a change in display.
[0043]
FIG. 9B shows a state in which the dive time is called by operating the push button 45 as shown in FIG. 7B in a state where the set value of the dive time alarm shown in FIG. 3B is exceeded. In this way, when the dive time is called out in a state where the set value of the dive time alarm is exceeded, the dive time display blinks. This makes it possible to alert the user that the set dive time has been exceeded if the dive time is called even after the dive time alarm that has sounded only once even if it is set.
[0044]
In this way, in the water depth measurement mode, when the dive alarm set before diving sounds, the display corresponding to the alarm blinks, so the user can be alerted by the alarm sound and display, and safe diving can be performed . Also, whether it is difficult or determine various dive alarm is sounding any alarms because of, by associating the display and alarm is sounding what alarms the user by reading the displayed contents Can be identified. Furthermore, even after the dive time alarm that sounds once even after setting, the dive time display flashes differently from the normal display, so that the user can be informed that the set dive time has passed. Diving.
[0045]
As shown in this embodiment, in the case of a limited display space, when a dive alarm sounds, the display is switched to a display corresponding to various dive alarms, and a predetermined function display is performed. Is not limited.
[0046]
【The invention's effect】
As is clear from the above description, according to the electronic wristwatch with a water depth meter of the present invention, by changing the tone of various dive alarms and flashing the display contents related to each other, It is a great advantage in practice that it can read the necessary information correctly and helps safe diving.
[0047]
In addition, even after the dive time alarm that sounds only once even after setting, the diving time display can be flashed differently from the normal display to inform that the set dive time has passed. It is a big advantage.
[Brief description of the drawings]
FIG. 1 is a circuit block diagram of an analog-digital display electronic wristwatch with a depth gauge according to an embodiment of the present invention.
FIG. 2 is a plan view of a time mode state of an analog-digital display electronic wristwatch with a depth gauge incorporating the circuit block shown in FIG. 1;
3 is a plan view of a dive alarm mode state of the analog-digital display electronic wristwatch with a water depth gauge incorporating the circuit block shown in FIG. 1; FIG.
4 is a plan view of a log mode state of an analog-digital display electronic wristwatch with a water depth gauge incorporating the circuit block shown in FIG. 1;
5 is a plan view of a log mode state of an analog-digital display electronic wristwatch with a water depth gauge incorporating the circuit block shown in FIG. 1; FIG.
6 is a plan view of a log mode state of an analog-digital display electronic wristwatch with a water depth gauge incorporating the circuit block shown in FIG. 1;
7 is a plan view of a water depth measurement mode state of the analog-digital display electronic wristwatch with a water depth gauge incorporating the circuit block shown in FIG. 1; FIG.
8 is a plan view of the analog-digital display electronic wristwatch with a depth gauge incorporating the circuit block shown in FIG. 1 when a dive alarm is sounded in the depth measurement mode state. FIG.
9 is a plan view of the analog-digital display electronic wristwatch with a water depth gauge incorporating the circuit block shown in FIG. 1 when the dive alarm sounds in the water depth measurement mode and after the dive time alarm has elapsed.
[Explanation of symbols]
14, 114 second hand
15, 115 minute hand
16, 116 hour hand
19, 119 Liquid crystal display

Claims (8)

A pressure sensor, a water depth calculation circuit for converting the pressure detected by the pressure sensor into predetermined water depth data, a liquid crystal display unit for displaying the water depth based on a signal from the water depth calculation circuit, and measuring the water depth Dive alarm setting means for setting a plurality of dive alarm functions used in the water depth measurement mode to be displayed, and when displaying the dive alarm set by the dive alarm setting means, the display of the liquid crystal display unit, An electronic wristwatch with a depth gauge , wherein the display of the corresponding dive alarm is distinguished from the display of other dive alarms by switching the display to the display unit or symbol of the corresponding dive alarm. 2. The electronic wristwatch with a depth gauge according to claim 1 , wherein when a dive alarm is notified, the display of the corresponding dive alarm is flashed.   The electronic wristwatch with a depth gauge according to any one of claims 1 to 2, wherein timbres for notifying dive alarms of the plurality of dive alarm functions are different from each other.   The dive alarm setting means further includes a dive time measurement means for measuring a dive time when the water depth data of the water depth calculation circuit exceeds a certain depth, and the dive alarm setting means generates an alarm when the preset water depth is exceeded. A depth alarm setting means, a dive time alarm setting means for sounding an alarm when a preset dive time is exceeded, and an ascent speed warning alarm means for sounding an alarm when a certain ascent speed is exceeded. 1. An electronic wristwatch with a depth gauge according to 1.   5. The electronic wristwatch with a depth gauge according to claim 4, wherein the display of the dive alarm is displayed blinking.   The electronic wristwatch with a depth gauge according to any one of claims 4 to 5, wherein timbres for dive alarm notification of the plurality of dive alarm functions are different from each other.   5. The electronic wristwatch with a water depth gauge according to claim 4, wherein the diving time display during the diving is changed in display form before and after the set time of the dive time alarm.   Time means that is analog display with a pointer at the center, a sensor that is an electronic detection means around the 9 o'clock position, a liquid crystal display at either the 12:00 position or near the 6 o'clock position, 2 o'clock, 4 o'clock, 8 o'clock 8. An electronic wristwatch with a depth gauge having a digital display according to any one of claims 1 to 7, further comprising an analog-digital display in which a plurality of external operation members are arranged in the vicinity of the 10:00 position. .

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