JPS5897688A - Timepiece with thermometer - Google Patents

Abstract

PURPOSE:To eliminate wrong displaying of temp. by inhibiting the display of temp. for a specified time after starting of measuring temp. CONSTITUTION:A microprocessor 3 executes a time display mode or a temp. measurement mode according to a switch state signal 6a. When a semiconductor switch 1b is closed in the temp. measurement mode, electric power is supplied from a power source 1c to a thermometer 1a, and temp. measurement is started. In this time, a pattern for displaying that the measurement is now under preparation is outputted to a display device 9. Upon lapse of a specified time, temp. is displayed on the display 9.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a thermometer with means for converting the temperature sensor signal y to digital g.
Regarding K, in more detail, when the time is in the normal time display state, the &degree sensor stops and the S? This invention relates to a clock with a thermometer that uses the thermometer only when measuring temperature.

In general, many watches use electric wires as batteries, but equipping a watch with a thermometer using a Kameko circuit will shorten the life of the battery, and it will also cause the battery to lose its power on a daily basis. A clock that incorporates a means of obtaining temperature information, which is one of the skin sensations, is a useful method that can be used to measure temperature.
19, to put 1 straight needle and 1 path in operation only during adjustment.
The consumption of the battery can be reduced. However, the thermometer watch has the drawback that its operation is unstable and it stops immediately after the start of operation, and during that time, the fecundity value displayed is different from the actual aX.The present invention eliminates the above-mentioned drawbacks. Is it possible to disable the temperature display t' for a certain period of time after the start of temperature sampling, and to put the direct needle circuit in an unstable state? ! The purpose of this invention is to avoid even one mislabeling.
L5! I will clarify. In addition, in the implementation of the present invention, an example of a watch-type thermometer watch is shown, but it is not limited to this, and any number of clocks without butterflies can be used. It shows a block diagram of Kyomasada's route that embodies the concept, and in fact, in J1 town, is there a temperature sensor using a thermistor? 1 and an A/D converter 2. The oscillation 6, i4 and time counter 5 that realize the clock function are well-known techniques, so their explanations are omitted. However, the time counter 5 is controlled by the control 1a of the invention
The a5Hg clock 5a and the time data 5b are supplied to the microprocessor S that processes s.

In this embodiment, the resistance 11Il of the temperature sensor 1 is a thermometer 1a whose change is converted into a digital signal by the A/D converter 2, and the microphone is a constant signal 1 from the grosser 5.
d K 'j Then, from the power supply 1o to the thermometer 1a, ig
A semiconductor switch 1b1 that outputs a switch state signal 6a to the micro 10 setter 3 for externally controlling the clock and thermometer functions, and a switch 6 for displaying time information and temperature information. A read-only memory 7 in which a program for controlling the operation of the microprocessor 5 and a constant table necessary for the thermometer function are written, and a read-only memory 7 in which a constant table necessary for the thermometer function is written; Read/write memory for storing the data processed by 5. Oscillator 4 that generates a 52KHz crystal & oscillator.
Time data 5b and α5H necessary for hour N display from the signal of
It consists of a time counter S that creates an m clock 5a.

Since the A/D converter 2 in the a-pointer 1a has an analog operating part, the consumption of 111 LfIL is large compared to the 0-MO8 circuit that constitutes the other one-way section of this embodiment. Therefore, when measuring the temperature, O is applied and power is supplied to the thermometer 11, and when the thermometer 1at- is not used, the semiconductor switch 1m)1 is opened to shut off the thermometer 1&. 0 Such a power saving method is a generally well-known method, but after the semiconductor switch 1b is closed and the thermometer IaKll power is supplied, the 11 degree sensor 1 and the A/D converter 2 It takes a certain amount of time or more for 1 to reach a thermally and electrically stable operating state.Therefore, in this embodiment, in order to eliminate the erroneous display caused by the instability of the thermometer 1a after the thermometer 1a starts affirming the temperature. Then, I decided to change the display for a certain period of time with a certain pattern unrelated to the measured value of the @Ryogai 1a.Next, the temperature of this example [
(In this example, the operation sequence of the Micro 70 setter 3 at the time of IilJ is warmed up using Fig. 2.) (referred to as the mode of determination) can be switched by operating the switch 6 =9.

The $2 figure shows the T micro 10 in the temperature ml 1 l constant mode.
Set? 5 is a flowchart showing the operation of step 5.

The grosser 3 selects the switch state g! Therefore, the time display mode ``tdani temperature measurement mode?'' is executed, but when the temperature is entered into the temperature measurement mode, in step 21, by closing the semiconductor switch 1b, the power supply 1C is turned off.
11 Supply power to the IL meter 1a and set the temperature of the temperature sensor 1 to A.
/D converter 2 starts outputting the thermometer as a digital signal. Next, in step 22, the measurement preparation display pattern is output to the display device 9. The measurement preparation display pattern is shown in FIG. 4, (a). Since steps 21 and 22 are executed continuously, the measurement preparation display pattern appears on the display device 9 instantly when the temperature setting mode starts. The clock 5a is counted and the measurement preparation display pattern is blinked every 1 clock, that is, the above α.
5Hsg clock 5at - At the same time as counting, a5Hg
Clock 5a's Mamechiage! When ll is detected, if the Gosada semi-rejection display pattern is output to the front mounting display &9, #! As shown in Figure 4, (b), if the m-foot preparation display pattern is erased, and the primary measurement preparation vIIi medium indication pattern is not output, the preparation is started as shown in Figure 4, -). 1'
0 step 24 for displaying the P display pattern, the above (L5
If the count value of the Hm clock 5a reaches 16, the process goes to step 25; if it does not, the process returns to step 25.

(If the 151g clock 5a is counted 16 times, approximately 8 seconds will elapse after the counting starts, and during this time, the ff
The straight needle 1a is in a stable state and the correct temperature value t″A /
D conversion 112 outputs. Step 25: insert the output signal of the A/D converter 2;

Step 26, followed by 1 shift t-display device? Converts the output to a sleep format code and outputs it to the display device 9.0 After this step 26t, the negative value appears on the display device for the first time. Step 27: Read the speed signal 6a Step 28: If the switch signal 6a is rarely in the time display mode, proceed to step 29; if it is at the temperature sampling mode, continue to read the temperature 611j In order to perform the step, the process returns to step 25, and the operation of reading a new temperature value and outputting it to the display tM-9 is repeated. Step 29, Chihiro body switch 1bt-open, electric ys1a to 1
Stop the power supply to Gokin 1a.

The basic operation in the time display mode is to read the time data 5b of the time counter 5 and output it to the display device 9.

FIG. 5 shows the appearance of y42JiiIfI of the present invention.
Then, the temperature center t1 and the display t are displayed on the surface of the watch case 10.
With c#9 placed, in the normal time display mode, the month and day are displayed like the fifth evil? LL and time 9t+i are displayed. The watch case 10 also includes a mode changeover switch 6a, a correction digit selection switch 6b, and a digit correction switch 6Q.

Figure 4 is a diagram showing the display device 9 of the embodiment of the present invention, and ←) in Figure 4 shows the state in which the mode selector switch 6a is operated to enter the temperature measurement mode. 5114'tia (1)) is a diagram showing a state in which the 61j regular preparation middle display pattern has been erased.

No. 5 (2) is a diagram showing the display device 9t after the measurement preparation state j81 for about 8 seconds, and the measured 7F-mR value 11 is displayed.

As described above, in the second aspect of the present invention, the power to one circuit of the thermometer is cut off during the normal time display mode, and the power to the one circuit of the thermometer is turned on only during the temperature measurement mode. In a clock with a thermometer that is used for electricity, displaying the temperature is prohibited for a period of time including the period in which the first path of the thermometer becomes unstable after the power is turned on to the thermometer circuit. Therefore, since there is no false temperature display that is different from the actual temperature, there is an effect that anyone can accurately read the humidity 11i[t-.

[Brief explanation of drawings]

Figure 1 is a block diagram of a circuit of an embodiment embodying the present invention.
Flowchart of operation of microprocessor in foot mode, Figure 3.
Figure 4(a) *(b> is a diagram showing the display device gold in the layer prepared for direct measurement, and Figure 5g5 is a diagram showing the display #C position after temperature measurement. Sensor 1a...
・Thermometer circuit 1b... Semiconductor switch 1C
・・・・・・ Power supply 2・・・・・・ Mu/Dfi device 3
... Microprocessor 4 ... Start a 5 ... Time counter 6 ...
・Switch 7... Read-on memory 8... Read-write memory 9... Display display 10... Hourly case and above, Figure 1, Figure 20 above Figure 3

Claims (1)

[Claims] Output signal of d degree 7 sensor, front pi 4 condensation sensor [digital/direct converter means, clock means, display device, and Guth's 1st path, memory. It is composed of a counter and a calculation circuit with a fllJII1g circuit, which is composed of a small number of calculation circuits;':L<. How many clocks do you spend?