JP3108944B2 - Electronic clock with temperature measurement function - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic timepiece having a temperature measuring function.

[0002]

2. Description of the Related Art Conventionally, an electronic timepiece having a temperature measuring function has been commercialized, in which a temperature detecting device is incorporated in an electronic timepiece, and a function of measuring and displaying the temperature with the temperature detecting device at regular intervals is added.

[0003]

However, the conventional electronic timepiece with a temperature measuring function as described above can only recognize the current temperature data, and today it becomes warmer or colder than yesterday. There was an inconvenience of not being able to recognize whether or not it was. The present invention has been made in view of the above circumstances, and has as its object to provide an electronic timepiece with a temperature measurement function that can easily recognize whether it is warmer or colder than yesterday. And

[0004]

[Means for Solving the Problems] To achieve the above object
The electronic timepiece with temperature measurement function of the present invention measures the current time.
Time counting means for counting, temperature detecting means, and this temperature detecting means
Temperature display means for displaying the temperature obtained at regular intervals with
And the temperature obtained at regular intervals by the temperature detecting means.
Storage means for storing together with the current time obtained by the clock means
And a key for switching to the reading mode, and
Stored in the storage means when switched to the read / write mode
Of the same day of the previous day
The current temperature displayed on the temperature display means.
First display control means for displaying the first display
After displaying the temperature at the same time the previous day by control means,
The other temperature stored in the storage means to the temperature display means.
Second display control means for sequentially switching and displaying the display in a row.
It is characterized by.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be specifically described below with reference to an embodiment shown in the drawings. Configuration FIG. 1 shows a circuit configuration of the present embodiment. That is, in the present embodiment, other circuit units are connected to the CPU 1 mainly. The CPU 1 is a circuit that sends control signals to each circuit to be connected, controls them, and processes, processes, and sends the sent data.
The oscillating circuit 2 is a circuit that constantly sends out a signal of a constant frequency, and the frequency dividing circuit 3 is a circuit that divides the signal from the oscillating circuit 2 to a predetermined frequency and sends it out. The time counting circuit 4 is a circuit that counts the signal from the frequency dividing circuit 3 to obtain time data, supplies the time data to the CPU 1, and supplies a minute carry signal to the CPU 1 every minute.
The RAM 5 is a circuit that stores data from the CPU 1 under the control of the CPU 1 and sends the stored data to the CPU 1.

The temperature sensor 6 is a circuit which receives a control signal from the CPU 1, measures ambient temperature, and sends an analog signal of a level corresponding to the temperature to the A / D conversion circuit 7. The A / D conversion circuit 7 is a circuit which starts upon receiving a control signal from the CPU 1, receives an analog signal from the temperature sensor 6, converts this into a digital signal, and sends it to the CPU 1. The key unit 8 includes a read mode switching key described later,
This circuit includes a time setting mode switching key, an A key, a B key, and the like, and sends a corresponding key input signal to the CPU 1 when any one of them is operated.

The display driving section 9 is a circuit for displaying data sent from the CPU 1 on the liquid crystal display panel 10.
The liquid crystal display panel 10 includes a time display section 11 and a temperature data display section 12. When the time displayed on the display section is the afternoon time, the time display section 11 is lit to indicate that. Afternoon mark display body 11a and 7 for time display
A segment display or the like is provided, and a temperature data display unit 12 displays a seven-segment display for temperature display and a temperature displayed on the seven-segment display in the past about two times.
When the temperature is four hours ago, a past mark indicator 12a illuminated to indicate the temperature is provided, and a temperature unit mark 12b indicating that the unit of the temperature being displayed is "° C."
Is printed and displayed.

FIG. 2 shows the configuration of the RAM 5 in detail. The temperature register T is a register in which the temperature measured every minute is sequentially set. The mode register M is a register for specifying a mode. When 0 is set, the normal mode for displaying the current time and the temperature measured every minute on the liquid crystal display panel 10 is specified, and 1 is set. At this time, the temperature reading mode is designated, and when 2 is set, the time setting mode is designated. The memory designation register P is a register that designates one of the temperature data memories M1 to M49 of the temperature data storage unit TDM described below. For example, when 49 is set, it designates the temperature data memory M49.
The temperature data storage unit TDM is a storage unit that stores the temperature measured every 30 minutes together with the measurement time, and includes temperature data memories M1 to M49. Each of the temperature data memories M1 to M49 includes a time area in which the measurement time is stored and a temperature area in which the measurement temperature is stored, and the lower the memory number, the later the temperature is stored. M1 stores the latest temperature, and the temperature data memory M49 stores the temperature about 24 hours ago (approximately, the current time of the previous day).

Operation Next, the operation of the embodiment constructed as described above will be described. FIG. 3 is a general flowchart showing an outline of the operation of this embodiment. That is, in step S1, it is checked whether a minute carry signal has been sent from the time counting circuit 4.
If so, the process proceeds to step S2, where a control signal is sent to the temperature sensor 6 and the A / D conversion circuit 7 to perform temperature measurement and the like, and the temperature data sent from the A / D conversion circuit 7 is transmitted. Set in the temperature register T (step S
2). Thereafter, in step S3, it is checked whether the minute digit of the current time of the time counting circuit 4 is either 00 minutes or 30 minutes.
To the temperature data memory M of the temperature data storage unit TDM.
The current time and the temperature set in the temperature register T are stored in the first time area and the temperature area. If the minute of the current time of the time counting circuit 4 is neither 00 minute nor 30 minutes, the process proceeds from the step S3 to the step S5, and the minute of the current time of the time counting circuit 4 is 15 minutes.
It is determined whether it is one minute or 45 minutes, and if it is one, the process proceeds to step S6 and only one memory data is stored in each of the temperature data memories M1 to M49 of the temperature data storage unit TDM. Is shifted and stored in the temperature data memory having a larger value, and the temperature data memory M1 is left empty.

On the other hand, if it is determined in step S1 that there is no minute carry signal, the flow advances to step S7 to check whether a key input has been made. If a key input has been made, a corresponding key process is executed in step S8. After the processes in steps S4 and S6 are completed, when it is determined in step S5 that the minute digit of the current time is neither 15 minutes nor 45 minutes, the key process in step S8 is executed and the key in step S7 is executed. When it is determined that no input has been made, the process proceeds to the display process in step S9, and the data that is instructed to be displayed at that time is displayed on the liquid crystal display panel 10, and thereafter, the process returns to step S1.

FIG. 4 is a flowchart showing the key processing in step S8 described above in detail, FIG. 5 is a flowchart showing the display processing in step S9 described above in detail, and FIG. 6 is accompanied by key operations. 3 illustrates a change in the display of the liquid crystal display panel 10. Hereinafter, various operations will be described in detail with reference to these drawings.

(A) Operation in the normal mode In the normal mode, as described above, the temperature is measured every time the minute carry signal from the time counting circuit 4 is present, and the minute digit of the current time of the time counting circuit 4 is measured. Is set to the temperature data memory M1 every time the time reaches 00 minutes and 30 minutes, and the temperature data storage unit T is set every time the minute digit becomes 15 minutes and 45 minutes.
The DM data is shifted (steps S1 to S6), and the process proceeds to the display processing (step S9). In this display processing, FIG.
As shown in (5), it is determined in step S50 that the value of the mode register M is 0 or 2 (0 in this case), and the current time of the time counting circuit 4 is displayed on the time display section 11 of the liquid crystal display panel 10 in step S51. And at step S52,
The temperature set in the temperature register T is displayed on the temperature data display section 12 of the liquid crystal display panel 10. For example, at 10:10 am, the temperature of the temperature register T is 23.4.
When the temperature is ℃, the liquid crystal display panel 10 displays an image as shown in a1 of FIG.

(B) Operation in read mode To switch the mode from the normal mode to the read mode, a read mode switch key is operated. In this case, the key operation is detected in step S7 in FIG. 3 described above, the process proceeds to the key processing in step S8, that is, the flow chart in FIG. 4, the operation of the key is detected in step S10, and the mode register is detected in step S11. When the value of M is 0, it is detected that the normal mode is set. Then, in step S12, 1 is set in the mode register M to set the read mode, and in step S13, the display process is prepared for the next display process. 49 is set in the memory designation register P to designate the temperature data memory M49.

Next, the process proceeds to step S9 in FIG. 3, that is, the display process in FIG. 5, and the value of the mode register M is 1, not 0 or 2, and it is detected that the read mode is already set (step S50), and the memory is designated. Temperature data memory designated by register P, ie, temperature data memory M4
9 is stored in the time display unit 11 and the temperature data display unit 1 of the liquid crystal display panel 10 about 24 hours before (that is, about the current time of yesterday) and the accurate measurement time.
2 (steps S53 and S54), and in step S55, the past mark display 12a is lit on the temperature data display unit 12 to indicate that the temperature data being displayed is past data for about 24 hours. . Thus, a1 in FIG.
As shown in the figure, when the read mode switching key is operated at the current time of 10:10 am, as shown by a2 in FIG.
(Time 0 minutes before) is displayed on the time display section 11, the temperature 21.3 ° C. measured at that time is displayed on the temperature data display section 12, and the temperature data display section 12 has a past mark display 12
a is also turned on. When the read mode switching key is operated when the current time is 10:20 as shown by b1 in the figure, as shown at b2 in FIG. Minutes later) at 22.
The fact that the temperature was 8 ° C. is displayed on the liquid crystal display panel 10.
That is, as described above, the temperature data memory M1 is changed every 30 minutes.
The temperature and the like of each temperature data memory are shifted every 15 minutes after that, so that the temperature and the like at the current time of yesterday can be stored in the temperature data memory M with a maximum error of 15 minutes.
49, and this is displayed on the time display section 11 and the temperature data display section 12 of the liquid crystal display panel 10.

When the A key of the key section 8 is operated after the reading mode is set as described above, each time the A key is operated, it is detected in step S30 of FIG.
At 31, while confirming that the value of the mode register M is 1 and the reading mode is set, the value of the memory designation register P is sequentially reduced by one by one from 49 to 1. (Steps S32 to S3
4) In the display processing, the data (measurement time and temperature) of the temperature data memory in the temperature data storage unit TDM specified by the value of the memory specification register P is displayed on the liquid crystal display panel 10, and the past mark display body 12a Are lit (steps S50, S53 to S5 in FIG. 5).
5). As a result, the temperature for every 30 minutes over the past 24 hours can be sequentially recognized from the oldest one over time.

In the above state, when the B key is operated, the memory designation register P stores 1 in the order from 1 to 49 in the opposite direction to the case in which the A key is operated. The value of the temperature data memory designated by the value of the memory designation register P is cyclically set (steps S40 to S44).
0 (Steps S50, S53 to S5)
5).

As described above, the temperature data storage unit TDM
In order to return to the normal mode after confirming the past temperature recorded in the above, the read mode switching key is operated again.
At this time, the operation is detected in step S10 of FIG. 4, it is determined in step S11 that the value of the mode register M is not 0, and in step S14, the value of the mode register M is 1 and the mode is the read mode. Is determined, and in step S15, 0 is set in the mode register M to return to the normal mode. Thereby, the display on the liquid crystal display panel 10 also returns to the display in the normal mode described above (step S5 in FIG. 5).
0 to S52).

(C) Operation in the time setting mode To switch the mode from the normal mode to the time setting mode, a time setting mode switching key is operated. At this time, the operation is detected in step S16 of FIG.
The process proceeds to step S18, where it is confirmed that the value of the mode register M is 0 and the normal mode is set.
Is set to 2 and the time setting mode is set.

After the time setting mode has been set as described above, the A key is operated to correct the hour digit of the current time. This operation is detected in step S30 in FIG. After that, in step S35, the value of the mode register M is set to 2 to detect that it is in the time setting mode, and in step S36, the hour digit of the current time is increased by one hour. On the other hand, when correcting the minute digit, the B key is operated. This operation is detected in step S40 of FIG.
At 45, the value of the mode register M is 2 to detect that it is in the time setting mode. At step S46, the minute digit of the current time is increased by one minute. The current time corrected in this manner is displayed in the time display unit 1 in the display processing.
1 (step S51 in FIG. 5).

As described above, when returning to the normal mode from the time setting mode after the correction of the current time is completed,
Operate the time setting mode switching key. At this time, the operation is detected in step S16 of FIG. 4, and after step S17, it is determined in step S20 that the value of the mode register M is 2 and the time setting mode is set, and in step S21, the mode register M is set. The normal mode is set by setting M to 0. Next, in step S22, it is determined whether or not the digit of the hour of the current time has been changed in the time setting mode. If there has been a change, the process proceeds to step S23. The time digit of each time is also changed uniformly by the change of the hour digit at the current time. Step S
At 24, it is determined whether or not the minute digit of the current time has been changed, and if there has been a change, at step S25, the change of the minute digit must be between 15 and 45 minutes and between 45 and 14 minutes. It is checked whether the change has been made to the object. If such a change has been made, the process proceeds to step S27. If not, the change in the above-mentioned minute digit is further performed in step S26 until 45 to 14 minutes. It is checked whether the object has been changed to the one from 15 to 44 minutes. If such a change has been made, the process proceeds to step S27 as described above, but if not, the key processing ends. In step S27, the measurement time stored in the time area of each of the temperature data memories M1 to M49 of the temperature data storage unit TDM is changed from the minute digit of 00 minutes to 30 minutes to 30 minutes.
In addition, the process of changing the time from 30 minutes to 00 minutes is executed, and the key processing is completed. After that,
In the display processing, the display operation in the above-described normal mode is performed (steps S50 to S52).

As described above, in the present embodiment, even if there is a change in the current time, the measured time and temperature stored in the temperature data memory M49 ensure data of the current time zone on the previous day. The fact that the time has been corrected means that the temperature data memory M1 of the temperature data storage unit TDM
Is not accurate, but if the time is corrected, the temperature data memory M1
Since the measurement time stored in M49 is also corrected, an accurate relationship between the measurement time and the temperature can be obtained. However, the data in the temperature data memory M1 may be measured in the future that has not yet reached the time, but this future value is not used (step S6 in FIG. 3).
In the next storage process in the temperature data memory M1 (step S4 in FIG. 3), the data is rewritten with the new data at that time and does not remain.

The present invention is not limited to the above embodiment, and various modifications can be made without departing from the present invention.

[0023]

According to the present invention, as detailed, the temperature is measured at regular time intervals, the temperature will be stored in the storage unit together with the measurement time, when switched to the read mode, the first prior
The temperature at the same time of the day is read from the storage unit and displayed
So today is warmer or colder than yesterday
Can be quickly and easily recognized.

[Brief description of the drawings]

FIG. 1 is a diagram showing a circuit configuration of one embodiment of the present invention.

FIG. 2 is a diagram showing a configuration of a RAM in FIG. 1;

FIG. 3 is a general flowchart showing an outline of the operation of the embodiment.

FIG. 4 is a flowchart showing details of key processing in FIG. 3;

FIG. 5 is a flowchart showing the display processing in FIG. 3 in detail;

FIG. 6 is a diagram showing a transition of display according to a read mode switching key operation.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 CPU 2 Oscillation circuit 3 Frequency dividing circuit 4 Time counting circuit 5 RAM 6 Temperature sensor 7 A / D conversion circuit 8 Key part 9 Display drive part 10 Liquid crystal display panel 11 Time display part 11a Afternoon mark display body 12 Temperature data display part 12a Past mark display 12b Temperature unit mark T Temperature register M Mode register P Memory designation register TDM Temperature data storage M1-M49 Temperature data memory

Claims (1)

(57) [Claims] 1. A time measuring means for counting a current time, a temperature detecting means, and a temperature obtained by the temperature detecting means at regular intervals.
Temperature display means, storage means for storing the temperature obtained at regular intervals by the temperature detection means together with the current time obtained by the clock means, a key for switching to a read mode, and a key for switching to the read mode by this key. Previous when switched
Of the temperatures stored in the storage means,
The temperature is read out and displayed on the temperature display means.
A first display control means for displaying in place of the current temperature, the temperature at the same time of the previous day by the first display control means
Is displayed, and then the other temperature stored in the storage means is displayed.
Is a second table for sequentially switching and displaying on the temperature display means.
An electronic timepiece with a temperature measurement function.