JPH04315090A - Hand indication function watch - Google Patents

Abstract

PURPOSE:To obtain a comprehensive warning function for error in depth meter function and the like by detecting deterred revolution of a motor for driving function indication hands and warning the result with a second hand of which operation is easily seen. CONSTITUTION:When the water depth mode is specified, a microcomputer part 20 switches on a water pressure measurement circuit 22 and measures the water depth at every constant time period. A motor 26 is driven by water depth hand operation pulse and indicate the water depth on a water depth indicator 31. During the operation for water depth indication, the deterred revolution of the motor 26 is detected with a deterred revolution detection circuit 36. If the microcomputer 20 receives the deterred revolution detection signal from the circuit 36, the time hand operation pulse is switched from a normal driving mode to a modulated driving mode and time modulation hand operation pulses are outputted to a motor 25. As the results, the motor 25 is driven by the time modulation hand operation pulses and the second hand 6 shifts from the hand operation at every second with the time hand operation pulses to a warning indication state in which hand is operated with 4 pulses at every 4 seconds and a series of measuring operation ends.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a pointer type electronic timepiece having function modes.

0002

[Prior Art] In recent years, a warning second hand drive system has been developed in which a plurality of motors are used to independently drive the second hand, hour and minute hands, and generate a signal to cause the second hand to move in a manner different from normal hand movement. A signal generation circuit, a detection circuit that detects rotation or non-rotation of an hour/minute hand drive motor, a control circuit that controls a signal generated when this detection circuit detects non-rotation of the motor, and the control circuit. By selectively passing a signal for normal hand movement or modulated hand movement under the control of a signal from A pointer-type electronic timepiece that emits light has been proposed (for example, Japanese Patent Application Laid-open No. 7346/1983). This watch is designed to prevent the wearer from noticing that the hour and minute hands, whose movements cannot be visually determined from moment to moment, become malfunctioning due to dust, distortion of the gear train, etc. The method is to use the easy-to-see second hand to warn of non-rotation detected by the hour and minute hands.

0003

[Problems to be Solved by the Invention] The above system is an extremely easy-to-understand system as a malfunction warning system, and the present invention seeks to apply the above system to malfunction warnings of functional watches. The objective is to provide an easy-to-understand warning function for malfunctions such as the depth gauge function that could be life-threatening.

0004

[Means for Solving the Problems] The structure of the present invention to achieve the above object is as follows. A pointer-type electronic timepiece comprising a time hand consisting of hour, minute, and second hands, a time drive motor for driving the second hand, and a drive mode switching means for switching the time drive motor between a normal drive mode and a modulation drive mode, A function signal generation means for generating a function signal such as a sensor function, a function pointer for displaying a function based on the signal generated by the function signal generation means, a function drive motor for driving the function pointer, and a function drive motor for driving the function pointer. and non-rotation detection means for detecting non-rotation,
The present invention is characterized in that the second hand is driven in a modulation mode by controlling the drive mode switching means using a non-rotation detection signal from the non-rotation detection means.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Examples of the present invention will be explained below with reference to the drawings. FIG. 2 is a plan view showing an embodiment of a pointer type functional timepiece according to the present invention. 1 is a watch with a depth gauge, and 2 is a register ring with a minute scale engraved on the ring. 3 is a dial plate, and a minute display scale is engraved on the circumferential portion 3a of the dial plate 3. Further, since the display unit of the water depth gauge, which will be described later, is 1 meter per minute scale, the minute display scale also serves as the display scale of the water depth gauge. Furthermore, to make the depth gauge easier to read, numerical values are engraved on the display scale positions corresponding to 3m, 6m, 9m, etc. positions. The display area of the water depth on the dial 3 is from the 12 o'clock position (0 m scale position) to the 55 minute scale position (55 m scale position), and the area from the 55 m scale position to the 12 o'clock position is used for water depth measurement. This is an area for over-display and function mode display, and in the center of dial 3 there are time display hands such as hour hand 4, minute hand 5, and second hand 6, depth hand 7, and maximum depth hand 8, which also serves as the function mode hand. A depth function indicator hand is provided.

[0006] 9 is a small dial plate, and the display scale of the water depth gauge is carved in 0.1 m units on the circumferential part 9a, and the sub-depth needle 10 provided in the center indicates 1 m every round. are doing. Note that the hour hand 4, minute hand 5, second hand 6 and depth hand 7
, the sub-depth needle 10, and the maximum depth needle 8 are configured to be driven by separate motors. 11, 12, and 13 are push buttons, and 14 is a crown, all of which constitute external operation members for correction. The push button 11 is a function mode switching button for specifying switching between time mode, depth alarm set mode, and water depth measurement mode, and when the push button 11 is operated, the maximum depth hand 8 is moved above the circumferential portion 3a of the dial 3. "EX" indicating time mode
Instructs to switch between the position, the "AL" position representing the depth alarm set mode, and the "12 o'clock (0 m)" position representing the water depth measurement mode.

The push buttons 12 and 13 are external operating members for operating functions in each function mode. By operating the push button 12 in the time mode, a memo of the maximum depth can be called up, and the maximum depth of the last dive can be called up. The maximum depth hand 8 indicates the depth value, and by operating the push button 13, a sound monitor for a depth alarm and an ascent speed warning alarm, which will be described later, can be heard. In addition, by operating the push buttons 12 and 13 in the depth alarm set mode state, the depth alarm set value can be set in forward or reverse directions in 1 m increments, and by this alarm set, the water depth in the water depth measurement mode state can be set to the set depth. When the alarm set value is exceeded, a depth alarm is notified. The ascent speed warning alarm is issued because rapid ascent (for example, 4 m or more per second) in the water depth measurement mode will have an adverse effect on the body. The crown 14 mechanically adjusts the calendar when pulled to the first click and the time when pulled out to the second click, and is normally in the 0-click position when pushed in.

FIG. 3 is a block diagram showing the basic configuration of the depth gauge watch 1 shown in FIG. 20 is a microcomputer section, which basically includes a CPU 20a, RAM 20b, and ROM 20.
c. ROM20c has CPU20
A program is written to control CPU2.
According to the program, 0a performs arithmetic processing while taking in information from the switch block 23 (described later) and exchanging data with the non-volatile memory 29 or RAM 20b (described later), and uses the processed data as necessary. An operating signal is output to motors 25, 26, and 27, which will be described later. 29 is a non-volatile memory in which reference values (0 m, 50 m) for calculating water depth values are stored. Reference numeral 21 denotes a water pressure sensor made of a diaphragm type semiconductor, which outputs an electrical sensor signal in response to fluctuations in water pressure. Reference numeral 22 denotes a water pressure measurement circuit, which is composed of a well-known amplifier circuit and an AD conversion circuit, receives a sensor signal from the water pressure sensor 21, and outputs water depth information Ps. 24 is a crystal oscillator for generating a clock signal, and 23 is a switch block. The switch block 23 is composed of switches controlled by push buttons 11, 12, 13 and a crown 14 shown in FIG.

Reference numerals 25, 26, and 27 are motors, and the motor 25 controls the time display device 30 in which the hour hand 4, minute hand 5, and second hand 6 are linked, and the motor 26 controls the depth hand 7 and the sub-depth hand 10.
The motor 27 independently drives the maximum depth hand 8, which also serves as the function mode hand. A buzzer 28 notifies the depth alarm and ascent speed warning alarm. Non-rotation detection circuits 35, 36, and 37 detect non-rotation of the motors 25, 26, and 27, respectively, and output non-rotation detection signals.

FIG. 1 is a flowchart showing the operation of the depth gauge watch 1 shown in FIG. 3 in a depth measurement mode. First, the push button 11, which is the function mode switching button, is operated to designate the water depth mode (step S1). When the water depth mode is designated, the microcomputer unit 20 controls the water pressure measurement circuit 2.
2 is turned on, and water depth measurement is started (step S2). This water depth measurement is carried out by the microcomputer section 20 at regular intervals, and the water depth information Ps obtained by A/D conversion of the sensor signal from the water pressure sensor 21 is inputted to calculate the water depth value, and the water depth is used to calculate the water depth value and display the water depth value. Calculate the hand movement pulse Psd. Next, the water depth is determined as to whether the water depth value is larger or smaller than 1 meter (step 3), and if the YES condition is satisfied, the process proceeds to the function drive motor operating state (step S4), and the water depth hand movement pulse Psd calculated in step S2 The motor 26
Output to. As a result, the motor 26 generates a water depth movement pulse Ps.
d, the water depth is displayed on the water depth display device 31 (step S5).

Also, during this water depth display operation, the non-rotation detection circuit 36 detects non-rotation of the motor 26 (step S6), and if a YES condition is established, the process proceeds to a drive mode switching state (step S7). And this step S7
By receiving the non-rotation detection signal from the non-rotation detection circuit 36, the microcomputer section 20 detects the time hand movement pulse Pt.
A time-modulated hand movement pulse Pth is output to the motor 25 by switching from the normal drive mode to the modulation drive mode. As a result, the motor 25 is driven by the time-modulated hand movement pulse Pth, and the second hand 6 changes from the 1-second movement based on the time-modulated hand movement pulse Pt to the warning display (step S8) in which the hand moves by 4 pulses every 4 seconds. The measurement operation ends. Then, the process returns to the water depth measurement starting state in step S2 and starts the next measurement. If the NO condition is satisfied in step S6, the process returns directly to the water depth measurement start state in step S2 and starts the next measurement. That is, if non-rotation is not detected in step S6, water depth measurement continues as is, and if non-rotation is detected, a warning is displayed and water depth measurement is continued.

Next, when the NO condition is satisfied in step S3, the function pointer returns to zero (step S9), and the depth hand 7 and sub-depth hand 10, which are currently displaying the water depth value on the water depth display device 31, Returns the display position to the 0 meter position and determines whether the mode switching button is operated (step S1
0) and if the condition of NO is satisfied, the step S2 is performed.
When the YES condition is met, push button 11 is pressed while 0 meters is displayed.
It determines that has been operated, ends the water depth measurement flow, and moves to the next function mode. The reason why the warning display in the water depth measurement mode is displayed in 4-second movement is to distinguish it from the battery voltage drop warning based on the detection result of the non-rotation detection circuit 35 in the time display, which is normally in 2-second movement. For this purpose, the function warning display is displayed for 4 seconds.

[0013]

[Effects of the Invention] As is clear from the above explanation, the present invention detects non-rotation of the motor for driving the function pointer in the function operation mode, warns the user of the result with the easily visible second hand, and continues the function operation itself. This makes it possible to provide an easy-to-understand warning function against malfunctions of the water depth gauge function or the like that could be life-threatening.

[Brief explanation of drawings]

FIG. 1 is a flowchart showing the operation in a water depth measurement mode of the present invention.

FIG. 2 is a plan view showing an embodiment of the pointer type functional timepiece of the present invention.

FIG. 3 is a block diagram showing the basic configuration of the pointer-type functional timepiece of the present invention.

[Explanation of symbols]

1. Watch with depth function 6 Second hand 7 Depth needle 10 Sub-depth needle 20 Microcomputer section 21 Water pressure sensor 25, 26, 27 Motor 31 Water depth display device 35, 36, 37 Non-rotation detection circuit

Claims (1)

[Claims] 1. A pointer comprising a time hand consisting of hour, minute, and second hands, a time drive motor for driving the second hand, and a drive mode switching means for switching the time drive motor between a normal drive mode and a modulation drive mode. The electronic timepiece includes a function signal generating means for generating a function signal such as a sensor function, a function pointer for displaying a function based on the signal generated by the function signal generating means, a function driving motor for driving the function pointer, and a function pointer for displaying a function based on the signal generated by the function signal generating means. and non-rotation detection means for detecting non-rotation of the function drive motor, and driving the second hand in a modulation mode by controlling the drive mode switching means with a non-rotation detection signal from the non-rotation detection means. A pointer-type functional watch featuring