JPH0833298B2 - Electronic multi-function depth gauge - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a water depth meter, in particular, an electronic multi-function having a multi-function such as maximum depth recording, dive time recording, depth alarm, and dive time alarm in addition to water depth measurement. It is related to the water depth gauge.

[Conventional technology]

When a diver dives, he or she usually carries various equipment and gives sufficient consideration to safety. 1 of the above equipment
One is a water depth gauge, which measures the water depth, which is necessary information for divers.

Conventional depth gauges are roughly classified into mechanical type and electronic type,
The mechanical one can easily measure the water depth without requiring any special operation, but it was difficult to achieve multiple functions except to record the maximum depth with the stylus needle type. On the other hand, the electronic type is easy to multi-function such as maximum depth recording, dive time recording, depth alarm, dive time alarm, etc. in addition to water depth measurement, but operation becomes complicated and special environment of diving Then, it was a cause of erroneous operation.

Also, regarding the water depth, not only the current water depth information but also the maximum depth that is the deepest value in each dive, each dive time, or a depth alarm that warns with a sound etc. when a certain water depth is exceeded, a constant dive There is a demand for a water depth gauge having necessary functions for safe diving, such as a dive time alarm that warns by sound when the time is exceeded.

[Problems to be solved by the invention]

However, a water depth meter equipped with the various functions described above can be realized only by an electronic type, but in the case of an electronic water depth meter, such as depth measurement, maximum depth recording, dive time recording, depth alarm, dive time alarm, etc. The switch operation for operating each function becomes complicated, and there is a problem that it is very troublesome to use the normal switch operation method in a special environment of diving.

The present invention eliminates the conventional problems as described above, in addition to water depth measurement, maximum depth recording, dive time recording, depth alarm, a depth gauge having functions such as dive time alarm, can be easily operated by anyone, Moreover, it is an object of the present invention to provide an electronic multi-function depth gauge that prevents erroneous operation.

[Means for solving problems]

In order to achieve the above object, the present invention has the following configuration. That is, the water depth gauge according to the present invention is a timepiece capable of measuring the water depth by the water depth measuring function having a pressure sensor or the like and displaying it on the display unit, and also capable of displaying the time system function,
In addition to water depth measurement, the diving memo function that has memo information such as maximum depth memo and diving time memo, and the measurement information function that has measurement information such as depth and diving time can be displayed. A circuit, a mode changeover switch for switching between the time system function and the water depth system mode, and one of a plurality of time system information for the time system function, and a plurality of memos for the water system function. It has an information selection switch for selecting one from the information and a start switch capable of starting the measurement information function from any memo information of the diving memo function, and when the start switch is operated. In the state where the pressure sensor is detecting a certain pressure value or more while shifting to the display state of the measurement information function, the start switch is operated. Ri is characterized by having a switching insensitive means to make the display switching from the measurement information function to the diving memo function not performed.

〔Example〕

 Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a circuit configuration diagram for switching the display of an electronic multi-function depth gauge showing an embodiment of the present invention. Reference numeral 1 is a diaphragm type semiconductor pressure sensor, which outputs a signal in an analog manner according to the pressure. 2 is an amplifier circuit for amplifying the above-mentioned symbol, 3 is A / for converting the output of the pressure sensor 1 into a digital quantity
It is a D conversion circuit. The depth gauge in the present embodiment has a depth gauge function 4, which is a maximum depth memo 4a as record information for recording the deepest value in the previous dive, and 1 of set information that a buzzer sounds when dive deeper than a set depth. Depth alarm 4b, dive time memo 4c as recorded information for recording the last dive time, buzzer sounds when the dive is longer than the set dive time dive time alarm 4d as set information
Diving information function 4g as a diving memo function with memo information consisting of, and measurement information function 4h for measuring water depth is depth measurement 4e
It also has a function consisting of dive time measurement 4f for measuring dive time.

On the other hand, in addition to the depth gauge function 4, it has a time system function 5 such as time, calendar, alarm, stopwatch, etc. (not shown). Reference numeral 6 is a reference frequency oscillator such as a crystal oscillator, and 7 is a frequency dividing circuit.

Reference numeral 8 is a mode selection circuit, which is operated by operating the _first switch SW ₁ . The mode selection circuit 8 has a time system function selection circuit 8a and a dive information selection circuit 8b, and the time system function selection is performed by the normal operation of the first switch SW1 which is an information selection switch (one operation within a fixed time). Either the circuit 8a or the dive information function selection circuit 8b is activated to output a time system function selection signal A (hereinafter abbreviated as signal A) or a diving information selection signal B (hereinafter abbreviated as signal B), When the first switch SW1 which is a mode changeover switch is continuously operated for a predetermined time or longer, the mode is switched between the time system function selection circuit 8a and the dive information function selection circuit 8b.

Reference numeral 9 is a dive measurement start / stop circuit, which includes a start switch only when the signal B from the dive information function selection circuit 8b is output and the signal of 0 m or less is output from the A / D conversion circuit 3. By operating the switch SW2 of No. 2, the amplification circuit 2 and the A / D conversion circuit 3 are activated, and the start and stop of diving measurement are repeated alternately. Second switch SW
_When the third switch SW3, which is the changeover switch in the measurement information function 4h, is operated with the diving measurement start / stop signal C (hereinafter abbreviated as signal C) output from the diving measurement start / stop circuit in ₂ , , The dive time measurement signal D (hereinafter abbreviated as signal D) is output only during operation.

Reference numeral 10 denotes a display switching circuit, which has a function of switching the respective functions of the water depth meter function 4 and the time system function 5 to selectively display them. Mode selecting circuit 8 is the signal A has a time-based function selection circuit 8a is output, since the time signal B is not output, the second, also by operating the third switch SW _2, SW ₃ The signals C and D are not output, and each display of the time system function 5 (time, calendar, alarm, stopwatch, etc.) is switched by the display switching circuit 10 every time the first switch SW ₁ is normally operated.

Next, when the mode selection circuit 8 is switched to the diving information function selection circuit 8b by operating the first switch SW _{1 for} a certain time or longer, the signal B is output and the signal A is not output. At this time, if the second and third switches SW ₂ and SW ₃ are not operated, the signals C and D are not output, and the display switch circuit 10 is operated by the normal operation of the first switch SW 1 to display the maximum depth of the dive information function 4g. Memo 4a One of the functions of depth alarm 4b, dive time memo 4c, and dive time alarm 4d is displayed. Depth alarm
4b Alternatively, when the dive time alarm 4d is displayed it is possible to modify the set value by the third switch SW _3.

Next, when the second switch SW ₂ is operated in this state, the start switch is operated, and each function 4a of the dive information function 4g
Display switching circuit by signal C in any state of 4d
The signal B to 10 is stopped, and the display switching circuit 10 enters the display state of the measurement information function 4h and the depth measurement 4e is displayed.

Further, while the signal C is being output, the third switch SW ₃
When is operated, the signal C to the display switching circuit 10 is stopped by outputting the signal D during the operation, and the display switching circuit 10 displays the dive time measurement 4f.

Reference numeral 11 is a driver, and 12 is a digital display unit such as a liquid crystal display for displaying the display contents switched by the display switching circuit 10.

FIG. 2 is a block diagram of display switching of the digital display unit 12. When the mode selection circuit 8 is the time function selection circuit 8a, the digital display unit 12 displays the time display 5a, the calendar display 5b, and the alarm time display 5c for each short-time operation that is the normal operation of the first switch SW _1. , Stopwatch display
5d, each display of the normal time-related function 5 is called to the time display 5a, and each function is operated. In each of the time display 5a, the calendar display 5b, the alarm time display 5c, and the stopwatch display 5d, the first switch SW
Press and hold ₁ for a few seconds, after switching each display 5a-5d, for example, as in this embodiment, time display 5a to calendar display.
After switching to 5b, it changes to maximum depth memo display 4a which is one of the depth gauge functions. That is, the mode selection circuit 8 is switched to the diving information function selection circuit 8b. In this state, the maximum depth memo 4a of the dive information function 4g, the depth alarm 4b, the dive time memo 4c, the dive time alarm 4d and the maximum depth memo 4a are switched each time the first switch SW ₁ is operated for a short time.

On the other hand, in each functional 4a~4d among the above described diving information function 4g, the second operation of the switch SW ₂ for operating the dive Measurement start / stop circuit 9, the depth measurement 4e is the measurement information function 4h to measure the water depth Switch to. Depth measurement 4e
At 0, the pressure sensor (not shown) receives water pressure from the 0 m display to display the water depth. After diving, you can switch from depth measurement 4e to maximum depth memo 4a by operating the second switch SW ₂ when the depth display is 0m.
It switches from e to the maximum depth memo 4a, which allows calling the depth alarm 4b, dive time memo 4c, and dive time alarm 4d. If you are measuring a value other than 0 m, that is, a value exceeding 0 m due to being in the water, the switch may be switched by mistake, which may give incorrect information to the diver. It has a switching insensitive means that prevents the display from being switched from the measurement information function 4h to the dive information function 4g, which is a dive memo function, by operating the SW2. However only dive time measurement 4f while operating the third switch SW ₃ is called. Here, the depth value that makes it insensitive to switching from the measurement information function 4h to another function is 0m.
It is not limited to, but for example, up to about 1 m can be regarded as a measurement error, and this 1 m can be set as the dead depth.

Switching from the water depth function to the time function is similar to switching from the time function to the water depth function, by pressing and holding the first switch SW ₁ for several seconds in each of the displays 4a to 4d.
After switching from a to 4d (after switching from the maximum depth memo 4a to the depth alarm 4b in the embodiment), the time display 5a is switched.

In addition to the above-mentioned functions, the dive information display function may be a function of setting the descent speed and the ascending speed, and notifying an abnormality by an alarm when the descent information is higher than the set value.

〔The invention's effect〕

As is clear from the above description, in addition to the water depth measurement function, the maximum depth memo that records the deepest dive value in the dive, the depth alarm that sounds the buzzer when diving deeper than the set depth, the dive time memo that records the dive time , It has various functions for displaying dive information such as a dive time alarm that sounds a buzzer if you dive longer than the set dive time, so it provides various information to the diver compared to conventional depth gauges and safe diving. Is possible.

Further, by switching the digital display unit to display each of the above-mentioned functions, the miniaturization is easy and practically effective so that it can be applied to a wristwatch as in this embodiment.

Furthermore, the most effective effect of the present invention is that in order to switch to the water depth measurement in the operation of each function of the above-mentioned water depth gauge, it suffices to simply operate the start button in all the other functions, which is very easy for the user to understand and erroneous operation. In addition to preventing the above, when the measured value during measurement shows a certain value or more, it does not switch to functions other than the measurement function, so safe diving is possible from this point as well. Such,
It is very effective in the special environment of diving.

[Brief description of drawings]

Each of the drawings relates to the present invention, FIG. 1 is a circuit configuration diagram of a display switching of an electronic multi-function depth gauge showing an embodiment of the present invention, and FIG. 2 is a block diagram of a display switching of a digital display unit. Is. 1 ... Pressure sensor, 4 ... Depth gauge function, 4a ... Maximum depth memo, 4b ... Depth alarm, 4c ... Dive time memo, 4d ...
… Dive time alarm, 4e …… Depth measurement, 4f …… Dive time measurement, 8b …… Dive information function selection circuit, 9 …… Dive measurement start / stop circuit, SW ₁ …… First switch, SW ₂ …
… Second switch.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor, Kuniichi Mochida 6-12 Hommachi, Tanashi City, Tokyo Metropolitan Citizen Watch Co., Ltd. Tanashi Manufacturing Co., Ltd. Yoko Watanabe (56) Reference JP-A-60-131419 ( JP, A) JP-A-56-103391 (JP, A) Actually developed Shou 60-106195 (JP, U)

Claims (1)

[Claims] 1. A water depth meter for measuring the water depth by a water depth measuring function having a pressure sensor or the like for measuring the water depth and displaying the same on a display unit. A time system function capable of displaying a time system function having time information and calendar information. Diving information function selection that can display depth system functions with selection circuit, diving memo function with memo information such as maximum depth memo and diving time memo, and measurement information function with measurement information such as depth and diving time A circuit, a mode changeover switch for switching between the time system function and the water depth function mode, one of a plurality of time system information in the time system function, and a plurality of memos in the water depth function. An information selection switch for selecting one of the information, and a start capable of starting the measurement information function from any memo information of the diving memo function. Switch,
When the start switch is operated, the measurement information function is displayed, and when the pressure sensor is sensing a certain pressure value or more, the measurement information is operated by operating the start switch. An electronic multi-function depth gauge having a switching insensitive means for preventing the display from being switched from the function to the diving memo function.