JPH1054888A - Indication method of present time on display in measuring apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To match the present time indicated on a display to a time axis of time sequential measured data obtained from measuring part. SOLUTION: A measuring apparatus 11 is provided at least with a measuring apparatus main body 12 in which the present time data obtained from an RTC 13 is processed with necessary operation in CPU 16 and the indication of the present time is freely disposed to a display part 17, and a measuring part 19 in which the measurement of desired time sequential data with a measuring timing given by way of a quartz oscillator 18 is freely distributed. In this case, the CPU 16 and the quartz oscillator 18 are directly connected via a time counter 20 and the CPU 16 after starting up the measuring apparatus 11 overlaps the count of the timer counter 20 initiated by an output signal of the quartz oscillator 18 on to the present time data as the base obtained from the RTC 13 after initialization, which is made the newest present time data. Thence, necessary operation is processed for the present time data, which is indicated as the present time on a the display 17.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for adjusting the present time displayed on a display unit of a measuring instrument body to the time axis of a time series measurement data obtained from the measuring unit. Time display method.

[0002]

2. Description of the Related Art Usually, a measuring instrument is provided with a measuring section which can freely measure required time-series data under a measuring timing given through a crystal oscillator, and a real-time clock (hereinafter, referred to as a clock) having a crystal oscillator. And a measuring device main body that can freely display the current time on the display unit based on the current time data obtained from “RTC”.

FIG. 4 is a functional block diagram showing, as a conventional example, the relationship between a measuring section constituting the above measuring instrument and the measuring instrument main body. The measuring instrument 1 includes a crystal oscillator 4 and a timer counter 5. A measuring instrument main body 2 which is provided with a current time data obtained from the RTC 3 through an arithmetic processing in a central processing means (CPU) 6 to freely display the current time on a display unit 7;
The apparatus includes at least a measurement unit 9 that is provided to freely measure required time-series data under a measurement timing provided via a separately prepared high-precision crystal oscillator 8.

For this reason, the measuring instrument 1 causes the measuring section 9 to measure required time-series data in accordance with a preset measuring time while simultaneously displaying the current time on the display section 7 of the measuring instrument body 2. Can be displayed.

[0005]

However, in the case of the above-mentioned conventional method, the measurement time set in the measurement section 9 and the current time displayed on the display section 7 are managed by separate and independent timekeeping systems. Will be. Therefore, the measuring unit 9
On the other hand, for example, the time-series data was measured from 15:00 on the day of the month to 15:00 on the day of the month, and the time series data was measured, and the measurement was accurately finished at 15:00 on the day of the month. Nevertheless, there is a possibility that the current time is displayed as “{month} day 14:55” on the display unit 7 based on the current time data obtained from the RTC 3.

That is, in the case of the above-described conventional method, the time-series data obtained from the measuring unit 9 at more accurate time intervals under the crystal oscillator 8 is inferior in performance to the crystal oscillator 8, It is erroneously recognized that the measurement has been completed earlier than the current time displayed on the display unit 7 under the crystal oscillator 4 in which the difference is inevitably generated even though the two are equivalent in nature. There is a disadvantage that the reliability of the time-series data is lost.

Further, the current time displayed on the display unit 7 based on the current time data obtained from the RTC 3 is based on the output signal from the crystal oscillator 4, so that the current time is not modified unless artificially corrected. As time elapses, there is a gradual deviation from the correct current time, and there is a problem that the operator feels psychologically uncomfortable.

The present invention has been made in view of the above-mentioned problems in the prior art, and has a measuring instrument adapted to match a current time displayed on a display section of a measuring instrument body with a time axis of time series measurement data obtained from the measuring section. The present invention intends to provide a method for displaying the current time on the display unit in the above.

[0009]

SUMMARY OF THE INVENTION The present invention has been made to achieve the above-mentioned object, and its structural feature is that current time data obtained from an RTC having a crystal oscillator is required by a central processing means. The main body of the measuring instrument, which is arranged to freely display the current time on the display by performing various arithmetic processing, and the required time-series data under the measurement timing given via a separately prepared crystal oscillator A measuring instrument comprising at least a measuring section arranged freely for measurement, wherein the central processing means and the crystal oscillator in the measuring section are directly connected via a timer counter, and the measuring instrument is turned on. The raised central processing means superimposes the count of the timer counter, which is started under the output signal of the crystal oscillator after initialization, on the reference current time data obtained from the RTC. Te and latest current time data, hereinafter, to display as the current time on the display unit and perform the necessary processing with respect to the current time data. It is desirable that the current time data of the RTC be corrected based on current time data at certain time intervals with a fixed time interval obtained from a timer counter directly connected to the crystal oscillator.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a functional block diagram showing an example of a configuration of a main part of a measuring instrument used for carrying out the present invention. A measuring instrument 11 comprises a crystal oscillator 14 and a timer counter 15. A measuring instrument main body 12 is provided which is separately provided with a central processing means (CPU) 16 which performs necessary arithmetic processing on the current time data obtained from the RTC 13 to freely display the current time on a display unit 17. At least a measuring unit 19 is provided, which is arranged to freely measure required time-series data under the measurement timing given via the crystal oscillator 18.

Further, the central processing means 16 in the measuring instrument body 12 and the crystal oscillator 18 for giving a predetermined measurement timing to the measuring section 19 can freely transmit and receive necessary data to and from the central processing means 16. Are directly connected to each other with the timer counter 20 interposed therebetween.

FIG. 2 is a flowchart showing an example of the processing procedure of the present invention applied to the measuring instrument 11 shown in FIG. 1. After the power is turned on and the measuring instrument 11 is started, the center is turned on. The processing unit 16 first obtains current time data to be a reference from the RTC 13.

After the start of the measurement, the central processing means 16 initializes a timer counter 20 interposed between the crystal oscillator 18 and clears the timer counter 20 to “0”, and also converts the current time data as a reference obtained from the RTC 13 into the current time data. On the other hand, for example, the count of the timer counter 20 which operates based on the output signal from the crystal oscillator 18 which is excellent in accuracy is superimposed to obtain the latest current time data.
The current time data is obtained from.

Thus, the central processing means 16 performs necessary arithmetic processing on the current time data obtained from the timer counter 20 every moment, thereby displaying the current time on the display unit 17 such as a CRT. Display.

FIG. 3 is a flowchart showing another example of the processing procedure of the present invention which is applied to the measuring device 11 shown in FIG.

In this case, the central processing unit 16 displays the current time on the display unit 17 such as a CRT in the same manner as in the example of the present invention shown in FIG. Originally, the current time data of the RTC 13 is corrected based on the current time data at a certain time interval obtained from the timer counter 20 at each time.
3 can be matched with the current time data obtained from the timer counter 20.

Since the present invention is configured as described above, when the measuring instrument 11 is started, the RTC
13, the current time data to be used as a reference is fetched, and the current time data is counted up by using a timer counter 20 which operates based on an output signal from the crystal oscillator 18. Then, the current time can be displayed on the display unit 17 of the measuring device main body 12.

In this case, the current time data obtained from the timer counter 20 is stored in the crystal oscillator 1 provided in the RTC 13.
4, the accuracy is higher than that of the current time data obtained from the RTC 13 because the crystal oscillator 18 is used.
, The more accurate current time can be displayed.

In addition, since the current time displayed on the display unit 17 is obtained by using an output signal from the crystal oscillator 18 provided to give a measurement timing to the measuring unit 19, The time axis of the time-series measurement data obtained from the unit 16 and the current time displayed on the display unit 17 can be mutually matched.

Therefore, the time series data is measured for the measuring unit 19, for example, from 15:00 on the day of the month to 15:00 on the day of the month, and the time series data is measured.
When the measurement is correctly completed at 15:00 on the day, the display unit 7 can also display the current time as "{month} day 15:00", so that time-series measurement data with high reliability can be obtained. it can.

On the other hand, as shown in FIG.
When the current time data of the RTC 13 is to be corrected based on the current time data at certain time intervals obtained from 0, the timer counter 20 taken immediately before the power of the measuring instrument 11 is turned off. , The current time data after the RTC 13 is counted.

As a result, the power of the measuring instrument 11 is turned on again.
In this case, the current time displayed on the display unit 17 is based on the current time data from the RTC 13 which has been corrected by the more accurate current time data obtained from the timer counter 20. It is possible to reduce the occurrence of a deviation between the two, and it is possible to effectively prevent an operator from giving an impression that the time accuracy of the measuring device 11 is poor.

[0023]

As described above, according to the present invention, the present time data is obtained by using the output signal from the crystal oscillator provided for giving the measuring timing to the measuring section. The display unit of the measuring device main body can display the current time coincident with the time axis of the time-series measurement data obtained from the measuring unit.

That is, when the measurement unit finishes measuring the predetermined time-series data, the display unit can display the current time that coincides with the end time. Trust can be enhanced.

Further, when the current time data of the RTC is corrected based on the current time data at a certain time interval obtained from the timer counter, a deviation from the accurate current time occurs. Can be reduced and the current time can be displayed on the display unit, so that it is possible to prevent the operator from feeling uncomfortable in operation.

[Brief description of the drawings]

FIG. 1 is a functional block diagram showing a configuration example of a main part of a measuring instrument provided for carrying out the present invention.

FIG. 2 is a flowchart showing an example of a processing procedure of the present invention which is applied to the measuring device shown in FIG.

FIG. 3 is a flowchart showing another example of the processing procedure of the present invention which is applied to the measuring device shown in FIG. 1;

FIG. 4 is a functional block diagram showing a main part configuration of a conventional measuring instrument.

[Explanation of symbols]

 REFERENCE SIGNS LIST 11 measuring instrument 12 measuring instrument main body 13 real-time clock (RTC) 14 crystal oscillator 15 timer counter 16 central processing unit (CPU) 17 display section 18 crystal oscillator 19 measuring section 20 timer counter

Claims (2)

[Claims] A measuring device main body which is provided with a central processing means for performing necessary arithmetic processing on current time data obtained from a real-time clock having a crystal oscillator and displaying the current time on a display unit freely; A measuring unit that is provided with at least a measuring unit that is configured to freely measure required time-series data under a measurement timing given via a separately prepared crystal oscillator, wherein the central processing unit and The crystal oscillator in the measurement unit is connected directly with a timer counter,
After starting the measuring instrument, the central processing means superimposes the count of the timer counter started based on the output signal of the crystal oscillator after initialization with respect to the reference current time data obtained from the real-time clock. A method for displaying the current time on a display unit of a measuring instrument, wherein the current time data is also combined with the latest current time data, and thereafter, necessary arithmetic processing is performed on the current time data to display the current time on a display unit. 2. The system according to claim 1, wherein said central processing means corrects the current time data of said real-time clock based on current time data at given time intervals obtained from a timer counter. Method of displaying the current time on the display unit of the measuring instrument.