JPH05188162A - Pointer-type display apparatus - Google Patents

Abstract

PURPOSE:To make it possible to provide information, by which a diver can dive with a sence of security by indicating the diving depth and the maximum diving value at the same time in a watch having a bathometer (pointer-type display apparatus). CONSTITUTION:A specified function-mode switching button is depressed, and a water depth mode is specified. The CPU 20 a of a microcomputer part 20 receives water depth information Ps, which is obtained by processing the sensor signal from a water pressure sensor 21 with an amplifying and A/D converting circuit 22, and computes water-depth-pointer operating pulses Psd. When the water depth value is larger than 1m, the pulse number Psd is outputted into a motor driving circuit 36 so as to drive a motor 26. The water depth is indicated with a depth pointer 7 of a water-depth indicator 31. A ROM 20c judges whether the water depth value is larger than the maximum value stored in a RAM 20b or not by comparison. When the depth value is large, the present water depth value is stored as the maximum value. The CPU 20a outputs the maximum-depth-pointer operating pulses Pmx to a motor driving circuit 37 so as to drive a motor 27. The maximum depth indication is updated with a maximum-depth pointer 8 of the indicator 31. Then, the water-depth measurement is continued.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a maximum value display system for a pointer type display device.

[0002]

2. Description of the Related Art In recent years, a pointer type display device having a meter function such as a water depth gauge is being developed using a plurality of motors. In the pointer type display device, the measured value such as water depth is always displayed for each measurement, but there is no one that displays the maximum value at the same time during measurement, and if you want to know the maximum value, display the maximum value during measurement. It is common to remember and call the maximum value after the end of measurement.

[0003]

[Problems to be Solved by the Invention] However, while a diver using a depth gauge has finished diving and is ascending, it is possible to ascend to the sea surface without stopping for decompression. These two factors are very important as they are determined by. SUMMARY OF THE INVENTION An object of the present invention is to provide a pointer type display device which can be used safely by a diver by simultaneously displaying the diving depth and the diving maximum value in a depth gauge function or the like which may be life-threatening.

[0004]

The structure in the present invention for achieving the above object is as follows. A signal detecting means, a signal processing means for converting an output signal from the signal detecting means into a digitized detection signal, a first motor drive circuit for generating a motor drive signal from the output signal from the signal processing means, and the first motor In a pointer-type display device including a first motor driven by a drive circuit and a detection signal display needle driven by the first motor, a motor drive signal is output according to a maximum value storage means and a stored value in the maximum value storage means. A second motor drive circuit to be created, a second motor driven by the second motor drive circuit, a maximum value display needle driven by the second motor, a comparison for comparing the detection signal with the stored value of the maximum value storage means. Means, and maximum value rewriting means for rewriting the detection signal in the maximum value storage means in accordance with the comparison signal of the comparison means, And displaying the maximum value of the detection signal.

[0005]

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 2 is a plan view showing a timepiece with a water depth gauge which is an embodiment of the pointer type display device in the present invention. 1 is a clock with a water depth gauge,
Reference numeral 2 is a register ring in which a minute display scale is engraved on the ring. Reference numeral 3 is a dial, and a minute display scale is engraved on a peripheral portion 3a of the dial 3. Further, since the display unit of the water depth meter to be described later is 1 m display per minute scale, the minute display scale also serves as the water depth display scale. Further, numerical values are engraved on the display scale positions corresponding to the 3 m, 6 m, and 9 m positions so that the depth gauge can be easily read. The display of the water depth on the dial 3 is a display area from the 12 o'clock position (0 m scale position) to the 55 min scale position (55 m scale position), and the region from the 55 m scale position to the 12 o'clock position is the water depth measurement. It is an area for over display and function mode display. At the center of the dial 3, the hour hand 4, minute hand 5,
A time display hand of the second hand 6, a depth hand 7 and a water depth function display hand of a maximum depth hand 8 which also functions as a function mode hand are provided.

Reference numeral 9 is a small letter plate, and a display scale of a water depth gauge is engraved in 0.1 m units on the circumferential portion 9a, and the sub-depth hand 10 provided at the central portion displays 1 m per revolution. is doing. The hour hand 4, the minute hand 5, the second hand 6, the depth hand 7, the sub-depth hand 10, and the maximum depth hand 8 are driven by different motors. 11, 12, 13
Is a push button, and 14 is a crown, all of which constitute an external operating member for correction. The push button 11 is a function mode switching button for switching and designating the time mode, the depth alarm set mode, and the water depth measurement mode. By operating the push button 11, the maximum depth hand 8 is moved on the circumferential portion 3 a of the dial 3. "E" indicating time mode
Switching is instructed between the "X" position, the "AL" position indicating the depth alarm set mode, and the "12 o'clock (0 m)" position indicating the water depth measurement mode.

The push buttons 12 and 13 are external operation members for performing the function operation in each function mode. By operating the push button 12 in the time mode state, the memo of the maximum depth can be called and the maximum depth when the user dived last time. The maximum depth hand 8 indicates the depth value, and by operating the push button 13, the sound monitor of the depth alarm and the ascent speed warning alarm 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 the forward and reverse directions in units of 1 m, and the depth of the water depth set in the water depth measurement mode state can be set by this alarm set. If the alarm set value is exceeded, a depth alarm will be issued. The levitation speed warning alarm is issued because it exerts a bad influence on the body when performing a rapid levitation (for example, 5 m or more per second) in the water depth measurement mode state. The crown 14 mechanically corrects the time with the calendar by the 1st pulling and the 2nd pulling, and is in the pushed 0th pulling position in the normal state.

FIG. 3 is a block diagram showing the basic structure of the timepiece 1 with a water depth gauge shown in FIG. Reference numeral 20 denotes a microcomputer unit, which is basically a CPU 20a, a RAM 20b, a ROM 2
0c. CPU2 in ROM 20c
A program for controlling 0a is written in the CPU
In accordance with the program, 20a handles information from a switch block 23 described later, exchanges data with a nonvolatile memory 29 described later or a RAM 20b, and performs arithmetic processing. Motor drive circuits 35, 36, 37 described later
The operation signal is output to. Further, the RAM 20b has a maximum value storage means for storing the maximum value, and the ROM 20c has a comparison means for comparing the detection signal with the storage value of the maximum value storage means, and the detection signal maximum value according to the comparison signal of the comparison means. Maximum value rewriting means for rewriting to the storage means is programmed. Reference numeral 29 is a non-volatile memory that stores reference values (0 m, 50 m) for calculating the water depth value. Reference numeral 21 is a water pressure sensor made of a diaphragm type semiconductor which is a signal detecting means, and outputs an electric sensor signal in response to a change in water pressure. Reference numeral 22 is a water pressure measuring circuit which is a signal processing means, and is composed of a well-known amplifier circuit and an A / D conversion circuit, which receives a sensor signal from the water pressure sensor 21 and outputs water depth information Ps. Reference numeral 24 is a crystal oscillator for generating a clock signal, 23 is a switch block, and the switch block 23 is composed of switches controlled by the push buttons 11, 12, 13 and the crown 14 shown in FIG.

The first motor drive circuit 35, the second motor drive circuit 36, and the third motor drive circuit 37 are motors for driving the first motor 25, the second motor 26, and the third motor 27 based on a command from the microcomputer section 20. Drive signal is output, and first
The motor drive circuit 35 has a time display device 30 in which the hour hand 4, the minute hand 5, and the second hand 6 are interlocked, and the second motor drive circuit 36 has a water depth display device 31 including the depth hand 7 and the sub-depth hand 10. The three-motor drive circuit 37 independently drives the maximum depth hands 8 which also function as the function mode hands. A buzzer 28 notifies the depth alarm and the ascent speed warning alarm.

FIG. 1 is a flowchart showing the operation of the timepiece 1 with a water depth gauge shown in FIG. 3 in the water depth measurement mode. First, the push button 11 which is the function mode switching button is operated to specify the water depth mode (step S1). When the water depth mode is specified, the microcomputer unit 20 causes the water pressure measurement circuit 2
2 is turned on, and water depth measurement is started (step S2). This water depth measurement is performed by the microcomputer unit 20 at regular intervals, and the water depth information Ps obtained by A / D converting the sensor signal from the water pressure sensor 21 is input to calculate the water depth value and the water depth for displaying the water depth value. The hand movement pulse Psd is calculated.
Next, a water depth judgment is made as to whether the water depth value is larger or smaller than 1 meter (step 3), and if the condition of YES is satisfied, the operation proceeds to the water depth needle drive motor operating state (step S4),
The number Psd of water depth movement pulses calculated in step S2 is output to the motor drive circuit 36. As a result, the motor 26 is driven by the output signal of the motor drive circuit 36 to display the water depth on the water depth display device 31 (step S5).

Next, a comparison judgment is made as to whether the water depth value is larger or smaller than the maximum value stored in the maximum value storage means (step 6), and if the condition of YES is satisfied, the maximum value rewriting means maximizes the current water depth value. Store as value (step S
7) Do. Then, the operation proceeds to the maximum depth hand driving motor operating state (step S8), and the maximum depth handing pulse number Pmx calculated in step S2 is output to the motor drive circuit 37.
As a result, the motor 27 is driven by the output signal of the motor drive circuit 37, and the maximum depth display is updated (step S
9). Further, when the condition of NO is satisfied in (step S6), the state directly returns to the water depth measurement start state of (step S2), and the next measurement is started. That is, in (step S6), if the water depth value is smaller than the maximum value stored in the maximum value storage means, the water depth measurement is continued as it is, and if it is larger, the maximum depth display is updated and the water depth measurement is continued.

Next, when the condition of NO is satisfied in the above (step S3), the process proceeds to the water depth hand zero (step S10) state, and the depth hand 7 and the sub depth hand which are currently displaying the water depth value on the water depth display device 31. When the display position of 10 is reset to a position of 0 meters and the operation judgment of the mode switching button (step S11) is performed and the condition of NO is satisfied, the process returns to (step S2) and the next water depth measurement is started. , YE
When the condition S is satisfied, it is determined that the push button 11 has been operated in the 0 meter display state, the water depth measurement flow is terminated, and the maximum depth needle is returned to the origin (step S1).
2) and shift to the next functional mode.

[0013]

As is clear from the above description, the present invention can display the maximum value at the same time on the pointer type display device, and therefore, important information is required for the depth gauge function and the like which may be life-threatening. Can be provided.

[Brief description of drawings]

FIG. 1 is a flowchart showing an 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 invention.

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

[Explanation of Codes] 1 Clock with Water Depth Meter 6 Second Hand 7 Depth Hand 8 Maximum Depth Hand 10 Sub Depth Hand 20 Microcomputer 21 Water Pressure Sensor 25, 26, 27 Motor 31 Water Depth Display 35, 36, 37 Motor Drive Circuit

Claims (1)

[Claims] 1. A signal detection means, a signal processing means for converting an output signal from the signal detection means into a digitized detection signal, and a first motor drive circuit for producing a motor drive signal from the output signal from the signal processing means. In a pointer type display device including a first motor driven by the first motor drive circuit and a detection signal display needle driven by the first motor, the maximum value storage means and the stored value of the maximum value storage means Therefore, a second motor drive circuit for creating a motor drive signal, a second motor driven by the second motor drive circuit, a maximum value indicating needle driven by the second motor, the detection signal and storage of the maximum value storage means. By providing a comparison means for comparing with a value and a maximum value rewriting means for rewriting the detection signal in the maximum value storage means according to the comparison signal of the comparison means, A pointer type display device characterized in that a maximum value display needle displays the maximum value of the detection signals.