JPS5813856B2 - Enzan Houshiki - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an arithmetic method, and particularly to the arithmetic operation of a measured value that stabilizes at its true value after undergoing transient fluctuations.

A measurement that stabilizes at its true value after undergoing transient fluctuations can be seen, for example, in electronic toll calculators.

The electronic price calculator displays the weight value on a daicycle and at the same time enters a coefficient to convert it into a price unit, that is, a unit price, to automatically calculate (weight) x (unit price) and display the result on a daicycle. be.

In the conventional calculation method for such devices, calculations are started by an external control signal (= key for calculators, calculation start pulse for electronic billboards) in the same way as calculators and the like.

The calculation method is 2 by inputting human power and weight input.
However, in the case of gravity input, when an item is placed on a scale, the scale vibrates for a certain period of time, and when the vibration has stopped and stabilized, the calculation is started by generating a calculation start pulse.

In addition, in the case of manual input, it detects that a key has been pressed and starts calculation.

In any of the above cases, once a computation is completed, the computation result is held and waits for the next computation to start.

(And let this state or step be PSO.

) This conventional method has the following problems.

1) As mentioned above, when an item is placed on the bar, a transient state occurs until it reaches an equilibrium state, so calculations cannot be made until it completely stops, so even if there is an item on the bar, the charge is "0".
”It remains.

Therefore, if it does not stop forever due to external vibrations, etc., it will take a long time to start calculations.

2) In order to avoid the above, if the damper is activated and immediately stopped, the sensitivity to minute weights will deteriorate.

3) A circuit is required to detect when the scale has completely stopped.

The present invention has been made with the aim of improving the above-mentioned drawbacks.

The details will be explained below.

In the method of the present invention, the calculation cycle is always activated while the weighing device is in operation without giving an external calculation start pulse, and the new weight and position data at that point are read once per calculation cycle. It is used to perform calculations.

FIG. 1 shows a flowchart of the conventional method, and FIG. 2 shows a calculation flowchart of the method of the present invention.

When the power of the device is turned on, the auto clear function is activated and the step is always set to PSO, and the position number and weight data at that time are read in PSO.

Thereafter, the process enters a calculation step, and after the final calculation step, it always returns to the previous PSO to read new contents and perform calculations.

Therefore, when the weight gradually approaches the true value, the current price is displayed, and after the scale has completely stopped, the display remains constant because the same calculation is repeated with the same weight.

FIGS. 3a and 3b show time charts corresponding to FIGS. 1 and 2, respectively.

The present invention is constructed as described above, and the charge is '0' until the flaking, which is a drawback of the conventional method, is completely stopped.
This improves the inconvenience of the condition continuing, and provides advantages such as being able to read at a desired time with an appropriate degree of accuracy, and eliminating the need for a circuit to detect when the light has stopped.

[Brief explanation of drawings]

FIG. 1 is a conventional calculation flowchart, FIG. 2 is a calculation flowchart of the present invention, and FIGS. 3a and 3b are the same as in FIG.
2 is a time chart of FIG. 2.

Claims (1)

[Claims] 1 In the calculation method of a measuring device that multiplies and divides the measured value, which stabilizes to the true value after transient fluctuations, by a unit conversion coefficient, the calculation cycle is always activated while the measuring device is in operation, and the calculation cycle is performed once per calculation cycle. A calculation method characterized in that the calculation is performed by reading each signal at that point in time without stepping over the stability of the measured value.