CN2906569Y

CN2906569Y - Electronic platform scale

Info

Publication number: CN2906569Y
Application number: CN 200620058580
Authority: CN
Inventors: 伍德常
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-04-30
Filing date: 2006-04-30
Publication date: 2007-05-30
Anticipated expiration: 2016-04-30

Abstract

The utility model discloses an electronic platform scale, which comprises a weighing platform support, a bridge circuit board and a sensor assembly, the sensor assembly comprises four sensors positioned on weighing platform support bottom to form Wheatstone bridge circuit. The utility model has the advantages of simple structure, low manufacturing cost, high sensitivity, small error and stable performance.

Description

A kind of electronic platform scale

[technical field]

The utility model relates to a kind of meausring apparatus, refers in particular to a kind of electronic platform scale that adopts sensor sensing.

[background technology]

At present existing bigger meausring apparatus generally adopts the mechanical type platform scale, it needs to change artificially, mobile counterweight, it is very inconvenient to operate, and there is very big manual operation error, need be certain about sliding weight of steelyard and the scale mark that aligns during reading, the weight of counterweight also will add up, also be very inconvenient, and this kind mechanical type pound claims to adopt two-layer cast member, very heavy inconvenience, therefore this old-fashioned mechanical type pound claims also to be replaced by electronic platform scale gradually, electronic platform scale is easy to operate with respect to the mechanical type platform scale, be easy to reading, it is accurate and quick to show, personal error is little, but also there is the expensive single-piece aluminum component sensor of employing in general electronic platform scale, and cost is higher, and this single-piece aluminum component sensor is not easy to realize sealing and waterproof, unstable properties, and make moist easily and influence reading, this electronic platform scale is a double-decker, comparatively complicated, manufacturing cost is higher.

Therefore, provide a kind of simple in structure, low cost of manufacture, highly sensitive, error is little, the electronic platform scale of stable performance is real in necessary.

[summary of the invention]

The purpose of this utility model provide a kind of simple in structure, low cost of manufacture, highly sensitive, error is little, the electronic platform scale of stable performance.

To achieve these goals, the utility model adopts following technical scheme:

A kind of electronic platform scale is provided, and it comprises weighing platform frame, group bridge wiring board and sensor module, and this weighing platform frame is a single layer structure, and this sensor module comprises four sensors that place weighing platform frame bottom.

This sensor places the scale pin place of four jiaos of weighing platform frame bottoms, and this group bridge wiring board is positioned at the medium position of weighing platform frame bottom, and these four sensor lines are formed the Hui Shi bridge diagram in the group bridge wiring board at middle part, weighing platform frame bottom.

This electronic platform scale further comprises group bridge chamber cap, group bridge chamber O-ring seal sealing this group bridge wiring board, and comprises scale pin O-ring seal, to seal this sensor.

This sensor is to adopt the biplate two-beam type, is the high precision steel part sensor of supporting with the steel ball.Four supporting uses of steel part sensor, parallel connection is input to digital circuit, and through A-D conversion, amplification, drive numeral and show, thus the weight of directly reading article.

Owing to this electronic platform scale adopts sensor module Hui Shi circuit measuring method, therefore need not to use double-deck weighing platform like that as machinery pound title or electronic scale, it adopts the individual layer weighing platform can accurately obtain the weighing value.

Compared with prior art, the utility model has following beneficial effect:

Four jiaos of four high precision steel part sensors substeps of electronic platform scale employing of the present utility model in weighing platform frame bottom, and connect to form the Hui Shi bridge circuit, improved the weighing sensitivity of electronic platform scale greatly, and this placement location can seal easily and effectively, prevent the influence that humidity or fog cause weighing system, effectively keep its high sensitivity, and applied range.

[description of drawings]

Fig. 1 is the partition structural drawing of the utility model electronic platform scale;

Fig. 2 is the upward view of the utility model electronic platform scale.

[embodiment]

Please refer to Fig. 1 and Fig. 2, electronic platform scale of the present utility model comprises weighing platform frame 1, group bridge wiring board 3 and sensor module 2, and this sensor module 2 comprises four sensors 2 that place weighing platform frame bottom.

This sensor 2 places scale pin 4 places of four jiaos of weighing platform frame 1 bottoms, this group bridge wiring board 3 is positioned at the medium position of weighing platform frame 1 bottom, these four sensor 2 lines are formed the Hui Shi bridge diagram in the group bridge wiring board 3 at middle part, weighing platform frame 1 bottom, for Displaying Meter provides the electric signal of weighing, Displaying Meter adopts electronic digital directly to show by title weight of heavy, reading direct convenience.

The measuring principle of Hui Shi electric bridge is a relative method, place the measured data of weighing platform frame sensor in different positions to compare and calculate the weighing value by four, because it measures the numerical value of multiple spot position, therefore deviation reduces greatly, and the weighing value of calculating by formula is also comparatively accurate, and error is less.

This electronic platform scale further comprises group bridge chamber cap 32, group bridge chamber O-ring seal 31 sealing this group bridge wiring board 3, and comprises to seal this sensor 2, excellent sealing performance being arranged by scale pin O-ring seal 21, prevents that water smoke from entering and influence the degree of accuracy of platform balance.

This sensor 2 adopts the biplate two-beam type, is the high precision steel part sensor of supporting with the steel ball.

4 is scale pin among Fig. 1, the 41st, and the supporting of scale pin, the 42nd, scale pin trim ring, the 43rd, set screw, the 44th, scale pin nut, the 5th, weighing platform face, the 6th, column.

Because this electronic platform scale adopts sensor module to form Hui Shi circuit measuring method, therefore need not to use double-deck weighing platform like that as mechanical platform scale or electronic scales, it adopts the individual layer weighing platform can accurately obtain weighing value, simple in structure and low cost of manufacture.

The above only is preferred embodiment of the present utility model, and protection domain of the present utility model is not limited thereto, and those of skill in the art are any to be included within the utility model protection domain based on non-material change on the technical solutions of the utility model.

Claims

1, a kind of electronic platform scale, it comprises weighing platform frame and sensor module, it is characterized in that, and this weighing platform frame is a single layer structure, and this sensor module comprises four sensors that place weighing platform frame bottom, and these four sensors connect to form bridge circuit.

2, a kind of electronic platform scale as claimed in claim 1 is characterized in that, it further comprises the group bridge wiring board that is positioned at middle part, weighing platform frame bottom.

3, a kind of electronic platform scale as claimed in claim 2 is characterized in that, it comprises that further group bridge chamber cap and group bridge chamber O-ring seal are to seal this group bridge wiring board.

4, a kind of electronic platform scale as claimed in claim 3 is characterized in that, this sensor places the scale pin place of four jiaos of weighing platform frame bottoms, and its line is formed the Hui Shi bridge diagram in the group bridge wiring board at middle part, weighing platform frame bottom.

5, a kind of electronic platform scale as claimed in claim 4 is characterized in that, this electronic platform scale comprises that further scale pin O-ring seal is to seal this sensor.