JPS5816134B2 - Digital Hiyouji Hakari Niokeru - Google Patents

Description

[Detailed description of the invention] The mechanical displacement of the scale is converted into an electrical signal, the weight value obtained by counting the converted pulse train is multiplied by a preset unit value, and the amount is calculated, and the amount and weight are calculated. Price scales that digitally display unit prices and unit prices have traditionally been equipped with a tare discrimination circuit that determines whether the detected weight value is a net weight or a tare weight, and a tare discrimination circuit that determines whether the detected weight value is a net weight or a tare weight. The system is equipped with a erroneous weight detection circuit that determines whether the weight has been weighed incorrectly or incorrectly, and the check output of each detection circuit activates a lamp drive circuit that meets the desired conditions, and the lamp display indicates that each weight is being weighed incorrectly. It was intended to notify the situation.

By the way, in order to eliminate waste in these notification means as much as possible, the present invention provides a display of check contents that also serves as a display section for the amount, weight, and unit price, and displays a desired sign promised in advance. The aim is to provide a method.

Next, the details will be explained with reference to an embodiment shown in a male diagram. First, 1 shown in FIG. 2 is a counter for sequentially counting the output pulse train from the detecting section 1 to obtain a weight value for measurement.

Further, 3 is a unit price setting section for presetting a unit price according to the article to be weighed; 4 is a set value of the unit price setting section 3;
This is an arithmetic circuit that calculates the amount by multiplying both counts of the counter 2.

Next, 5 is a display circuit that digitally displays the above amounts, weights, and unit prices.The display tube for this circuit is a seven segment type, as shown in Figures 2 to 4. For example, it consists of a 5-digit amount, a 5-digit weight, and a 5-digit unit price.

Furthermore, 6 is a tare discrimination circuit that discriminates whether the weighed value is a net weight or a tare weight, and this circuit 6 outputs a detection output signal α when it is detected as a tare weight. is applied to the display circuit 5, and as shown in FIG. 3, the most negative digit of the weight display section 8 is displayed as a negative sign, and the tare amount is also displayed.

In that case, the preset unit price is displayed on the unit price display section 9, but the amount displayed on the amount display section 10 is "0" as long as the bag is tared.

Further, 7 is an incorrectly weighed weight detection circuit that determines whether the scale is operating normally or whether the weighing is incorrect. The detection signal β is output, and the output signal β causes the highest digit of the amount display section 10 to be displayed as "C" as shown in FIG.
All weight values and unit values are based on unlit conditions.

By the way, when the scale operates normally, as shown in FIG.
0 will display the amount of money resulting from multiplying the weight value by the unit price.

As described above, the present invention drives the required segments of the seven-segment display tube of the display circuit 5 by one time using the detection signals α and β outputted from the tare discrimination circuit 6 and the miscount weight discrimination circuit γ. Since the check display means is used in the display circuit 5 to display a predetermined sign, there is no need to construct a separate power supply for lamp lighting compared to the conventional lamp lighting system. This eliminates the need for thermal circuits, lamp drive circuits, etc., which has the advantage of reducing the number of circuits and parts used, leading to a reduction in costs.

[Brief explanation of drawings]

FIG. 1 is a control block diagram of a fare scale according to the present invention, and FIGS. 2 to 4 are explanatory diagrams showing display examples according to the present invention. 1... Weight detection unit, 2... Counter, 3
...Unit price setting section, 4...Arithmetic circuit, 5
...Display circuit, 6...Tare discrimination circuit,
I: Miscalculated weight determination circuit, 8: Weight display section, 9: Unit price display section, 10: Amount display section.

Claims (1)

[Claims] 1. A weight detection means that converts the mechanical displacement of the scale into an electrical signal, a counting means that counts the output pulse train of the conversion to obtain a displacement weight value, and a weight value obtained by the counting means and is set in advance. A calculation means for calculating the monetary value by calculation with the unit value, a display means employing a seven segment type display tube for digitally displaying the monetary value calculated by the calculation, the set unit value and weight value, and a display means using a seven segment type display tube, There is a tare detection means for determining whether the weight is a net weight or a tare weight, and an erroneous weight detection means for determining whether the scale is operating normally or an incorrect weight. A digital device characterized in that, in the toll scale provided with the above, desired signs corresponding to the detection signals from the tare weight detection means and the miscalculated weight detection means are displayed on the display tube of the display means. Check content display method on display rod.