JPS6282387A - Electronic timepiece with bathometer - Google Patents

Abstract

PURPOSE:To realize an electronic timepiece with a bathometer which enables safe dividing by displaying alarm by functions on a display device according to the control signal from a decision circuit. CONSTITUTION:When a function selection switch KS is operated once in a normal timepiece function state, the bathometer function selection signal DV of a function selecting circuit 6 goes up to a level H. Then, a display switching circuit 9 outputs wave-depth information PS from a hydraulic pressure measuring circuit 5 as display information PK to display a water depth value on the display device 11 through a decoder driver circuit 10 and an AND gate 8b of the decision circuit 8 turns on. Further, the timepiece selection signal TK goes down to a level L with a switch KS turned on, so a gate 8a turns off. When a drop in battery voltage is detected by a battery voltage detecting circuit 7 in this state, a detection signal BD goes up to a level H and a control signal C2 as the output of the gate 8b also falls to the level H. Then, the water depth value displayed on the device 11 blinks to begin to display warning of battery life, so safe dividing is secured.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to an electronic timepiece with a depth gauge.

[Conventional technology]

Conventional electronic watches with a depth gauge that are equipped with a battery voltage detection circuit to detect a drop in battery voltage and that detect a drop in battery voltage and display a warning display also use part of the digital display such as a number pattern or a colon. Or, the ward has prepared a specific mark as a warning display, and is configured so that when a drop in battery voltage is detected in either the clock function or depth gauge function, the digital display section or the specific mark lights up or flashes. ing.

[Problems to be solved by the invention 1~] In conventional electronic watches with depth gauges, when a drop in battery voltage is detected, a warning is displayed regardless of the clock function or the depth gauge function in order to simplify the logic circuit. It is configured to display the same warning display. However, diving is a dangerous sport, and if the depth gauge function is impaired due to a drop in battery voltage, it can be a life-threatening problem.

As mentioned above, when the depth meter function detects a drop in battery voltage, it is necessary to notify the user as soon as possible.

The purpose of the present invention is to detect a drop in battery voltage in the depth gauge function (if -, the water depth value itself is flashed, and the warning level is stronger than the colon flashing in the Jigen 4 function.
To provide an electronic watch with a water depth gauge that can guide the wearer in a safe direction.

[Means for Solving the Problems] In order to achieve the above object, the present invention has the following configuration. A battery voltage detection circuit that detects a battery voltage drop and outputs a detection signal; a determination circuit that determines whether the detection signal is output as a clock function or a depth gauge function and outputs a control signal; and the control circuit. The present invention is characterized in that it includes a decoder/driver circuit that displays a warning on a display device for each function according to the signal.

〔Example〕

Embodiments of the present invention will be described below based on the drawings.

FIG. 1 is a circuit block diagram of an electronic timepiece according to the present invention.

Reference numeral 1 is an oscillator using a crystal resonator as a time reference, and reference numeral 2 is a frequency dividing circuit that receives the oscillation signal from the oscillator 1 and outputs an I Hz multiplied signal. Reference numeral 3 denotes a clock circuit which receives the 1)1z signal from the frequency dividing circuit 2, performs a clock operation, and outputs time information Px.

4 is a water pressure sensor made of a diaphragm type semiconductor;
Outputs electrical sensor signals in response to fluctuations in water pressure. 5
is a water pressure measuring circuit, which is composed of an amplifier circuit and an AD conversion circuit, receives the sensor signal as input, and outputs water depth information Ps. Reference numeral 6 denotes a function selection circuit, which selects a watch function selection signal TK and a depth gauge function selection signal DV by operating a function selection switch KS that operates in conjunction with an external operation member.
are alternately output as H level. 7 is a battery voltage detection circuit, which outputs a detection signal r3 D when a battery voltage drop is detected.
[Output as I level. 8 is a determination circuit composed of A N D gates 8a and 8b, and detects the detection signal B.
D, Clock function selection signal T K, Depth gauge function selection signal DV
is input, it is determined in which function selection state the battery voltage drop is detected, and control signals C1 and C2 are output.

9 is a display switching circuit, which displays time information Px and water depth information Ps.
manually, and outputs either the watch function selection signal TK or the depth gauge function selection signal T)V as display information Pk. 10 is a decoder/driver circuit;
Display information Pk is input and each function information is displayed, and different warning displays are displayed on the display device 11 according to the control signals C1 and C2.

Next, the operation of the electronic timepiece with the above configuration will be explained. 1. In the normal timepiece function state, the timepiece function selection signal TK output from the function selection circuit 6 is at the tl level. The display switching circuit 9 is connected to the clock circuit 3.
The time information Px from 1 is outputted as the display 1 blue report Pk, and the time is displayed on the display device 11 as shown in FIG. 2(a) via the decoder/driver circuit 10. is set to ON state. Further, the depth gauge function selection signal DV is at the L level, and the ND gate 8b is in the OFF state. In this state, when a battery voltage drop is detected by the battery voltage detection circuit 6, the detection signal BD becomes the -■ level, so the AND gate 8a
The control signal C1 which is the output of is at the I level. As a result, the decoder/driver circuit 10 causes the display device 11 to
As shown in FIG. 2(a), a battery life warning is displayed by colon flushing.

Next, the operation of the depth gauge function will be explained.

From the normal watch function state, set the function selection switch KS to 1.
When the recirculation is performed, the function selection circuit 6 outputs the depth gauge function selection signal D.
V becomes the ■I level, and as a result, the display switching circuit 9 outputs the water depth information Ps from the water pressure measuring circuit 5 as display information Pk, and displays the information as shown in FIG.
By displaying the water depth value on the display device 11 as shown in b), it becomes a water depth meter function, and at the same time, the A of the judgment circuit 8
ND gate 81] is turned on. Further, as the clock function selection signal TK is brought to the L level by operating the switch KS, the AND gate 8a is turned off. In this state, when the battery voltage detection circuit 7 detects a decrease in battery voltage, the detection signal BD changes to 1. Become Rubel, AND
The control signal C2, which is the output of the game controller 8b, also becomes an i-level. As a result, the decoder/driver circuit 10 causes the water depth value displayed on the display device 11 to flash as shown in FIG.

〔Effect of the invention〕

As is clear from the above explanation, according to the present invention, when a drop in battery voltage is detected when the depth gauge function is selected, the numerical pattern such as the water depth value displayed on the display device is flashed, and the clock function is switched off. By configuring the system so that the warning level is higher than in the case of colon flushing, it is possible to continue diving without noticing that the battery voltage has dropped during a dive and avoid encountering danger. The commercialization of electronic watches with depth gauges that enable safe diving will have a significant impact.

[Brief explanation of drawings]

FIG. 1 is a circuit block diagram of an electronic timepiece according to the present invention. 2 is a front view of the display device shown in FIG. 1, FIG. 2(a) shows the timepiece function state, and FIG. 2(b) shows the depth gauge function state. 6...Clock circuit, 4...Water pressure sensor,
5...Water pressure measurement circuit, 6...Function selection circuit, 7...Battery voltage detection circuit, 8...
- Judgment circuit, 9...Display switching circuit, 10...
...Decoder/driver circuit. Figure 1 Temple habits Figure 2

Claims (2)

[Claims] (1) Input a water pressure sensor, a water pressure measurement circuit that converts the output signal from the water pressure sensor into a water pressure measurement value, water depth information from the water pressure measurement circuit, and time information from the time measurement circuit, select one, and output. A switching circuit, a function selection circuit that controls the switching circuit by outputting a watch function selection signal and a depth gauge function selection signal by operating an external operating member, and a battery voltage detection circuit that detects a drop in battery voltage. In an electronic watch with a depth gauge that detects and displays a warning, a determination circuit that determines whether the detection signal that detects a battery voltage drop is output as a clock function or a depth gauge function, and outputs a control signal. and a decoder/driver circuit that displays a warning on a display device for each function according to the control signal, and displays a warning when the function selection circuit selects the depth gauge function and when the clock function is selected. An electronic watch with a depth gauge that is different from the others and has a stronger warning level in its depth gauge function. (2) An electronic timepiece with a depth gauge, wherein the warning display according to claim 1 is a flashing colon in the timepiece function, and a flashing number pattern in the depth gauge function.