JPS5891130U

JPS5891130U - Electronic scales

Info

Publication number: JPS5891130U
Application number: JP18727181U
Authority: JP
Inventors: 池北　実
Original assignee: 株式会社石田衡器製作所
Priority date: 1981-12-15
Filing date: 1981-12-15
Publication date: 1983-06-20

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

第１図は本考案の前提となる電子秤の構成図、第２図は
本考案−実施例の構成図である。１・・・重量検出部（センサ）、１ａ・・・計量皿、２
・・・増幅器、３・・・Ａ／Ｄ変換器、５・・・ＡＮＤ
回路、６・・・零点記憶部、７・・・減算部、δ・・・
基準値記憶部、９・・・重み演算部、１１・・・重み記
憶部、１２・・・重量演算部、１３・・・表示部、１４
・・・安定判定部、１５・・・スパン補正スイッチ、１
６・・・制御部、１７・・・基準重量の分銅、１８・・
・上下動機構。FIG. 1 is a block diagram of an electronic scale that is the premise of the present invention, and FIG. 2 is a block diagram of an embodiment of the present invention. 1... Weight detection unit (sensor), 1a... Weighing pan, 2
...Amplifier, 3...A/D converter, 5...AND
Circuit, 6... Zero point storage section, 7... Subtraction section, δ...
Reference value storage section, 9... Weight calculation section, 11... Weight storage section, 12... Weight calculation section, 13... Display section, 14
... Stability judgment section, 15 ... Span correction switch, 1
6...Control unit, 17...Reference weight, 18...
・Vertical movement mechanism.

Claims

[Scope of utility model registration request]

A weight detector that detects the weight of the item, an A/D converter that converts the analog weight data detected by the weight detection section into a digital amount, and the output of the A/D converter is stored in the zero point storage section. A subtraction unit that subtracts the output of the A/D converter when no load is applied, a reference value storage unit that stores a reference value corresponding to the reference weight for calibration, and a subtraction unit that subtracts the output of the A/D converter when the reference weight for calibration is measured. From the output of the unit and the level value stored in the reference value storage unit,
A weight calculation unit that calculates a weight, a weight storage unit that stores the weight calculated by the weight calculation unit, and a weight calculation unit that calculates a measured value from the output of the subtraction unit and the weight stored in the weight storage unit. The electronic scale has a span correction switch that is operated when adjusting the span, a stability determination section that checks the output of the A/D converter to detect stationary stability during weighing, and a balance that loads a reference weight onto the weight detection section. a vertical movement mechanism for removing;
When the span correction switch is operated, the A/D converter output is stored in the zero point storage section, and then the vertical movement mechanism is controlled.
An electronic scale comprising: a control section that loads a weight of a reference weight onto a weight detection section, and further issues a calculation command to a weight calculation section when the stability determination section detects static stability.