JPS5822104Y2 - Display stabilization circuit for electronic digital display scales - Google Patents

Description

[Detailed description of the invention] This invention relates to a display stabilization circuit in an electronic digital display frame that outputs a weight signal corresponding to the weight of the object to be weighed when the object is placed on the scale. .

This type of electronic digital display frame converts the amount of mechanical displacement corresponding to the weight of the object to be measured into an electrical signal using an A-D converter, counts this signal with a reversible counter, and displays this counted value. The weight is sent directly to the department and the weight is displayed digitally.

In this case, there is a drawback that the count value on the display section is not stable until the mechanical vibration of the weighing pan completely stops.

Another disadvantage is that the weight cannot be read until the vibration stops.

This idea was made based on the above circumstances, and
- The signal input from the D converter to the reversible counter is periodically recorded in three or more registers with a short time difference,
When the average value of each of these registers matches the current count value, this is taken out as a stable display signal and given to the weight display section, etc., so that the weight can be displayed relatively early, and the weighing can be read quickly. The present invention aims to provide a display stabilizing circuit that is easy to use.

This invention will be explained in detail below based on the illustrated embodiments.

In the figure, reference numeral 1 indicates a weight detection section, and this weight detection section 1
consists of an AD converter 2 consisting of a slit chart, a light emitting element, a light receiving element, etc., a reversible counter 3 for counting output pulses from the AD converter 2, and the like.

The reversible counter 3 has three or more registers 4ae, 4b, etc. that operate sequentially with a predetermined short time difference.
The count values are sequentially shifted and given to .

These registers 4a, 4b, .

The contents of these registers 4a, 4b, . . . are input manually to an average value circuit 5, and this circuit 5
The average value of . At this time, this is given to the weight display section 7 as a stability display signal.

If necessary, this signal is also given to the price display section 9 via the price conversion circuit 8 at the same time.

When passing through the price conversion circuit 8, the signal is transmitted to the unit price setter 1.
It is integrated from 0 to the unit price signal given to the unit price register 11,
The price display section 9 displays a price value based on the establishment unit price.

Note that the reference numeral in the figure indicates a unit price display section.

In such a configuration, when an object to be weighed is placed on the weighing pan, an unstable numerical signal within a predetermined value is input to the reversible counter 3 via the A-D converter 2 while the weighing pan is vibrating. .

These numerical signals are sequentially shifted and given to each register 4a, 4b, . . . and recorded.

When someone comes within the range of the swinging width of the weighing plate, register 4a
, 4b, . . . during one round of shifting, the same numerical value is recorded in the registers 4a, 4b, .

Then, when the current count value output from the reversible counter 3 and the average value of each register 4a, 4b, etc. match, a stability display signal is output from the comparator circuit 6 as described above.
The desired weight value is displayed on the weight display section 7.

As mentioned above, the same signal is also given to the price display unit 9 via the price conversion circuit 8.

As described above, according to this invention, there are three or more registers for recording weight signals with a predetermined time difference, and a display stability signal is generated when the average value of each of these registers matches the current count value. Therefore, before the vibration of the weighing pan completely stops, a read signal with virtually no display error can be stably provided, which shortens the time it takes to read the weighing value and reduces the movement of the numerical value on the display. , since there is no flicker, the effect is that it becomes easier to read.

[Brief explanation of drawings]

The drawing is a block circuit showing one embodiment of this invention. 1... Weight detection section, 2... A-D converter, 3... Reversible counter, 4a... Register, 5... Average value circuit, 6... Comparison circuit, 7... Weight display section, 8... Price conversion circuit, 9... Price display section, 10...・・・
...Unit price setter, 11...Unit price register, 12
...Unit price display section.

Claims (1)

[Scope of utility model registration request] When an object to be weighed is placed on the scale, an electronic digital display frame outputs a weight signal corresponding to the weight of the object to be weighed, and includes three or more digital display frames that record the weight signal at a predetermined time difference. , an electronic digital device comprising: an average value circuit that calculates the average value of the contents of each of the registers; and a comparison circuit that detects coincidence between the average value and the current count value and generates a display stability signal. Display stabilization circuit in display frame.