Electronic scales
Technical field
The invention belongs to surveying instrument, be specifically related to a kind of weight measurement instrument.
Background technology
The form of existing scale has a variety of, comprises steelyard, pallet (spring) scale, electronic scales etc.The little scale of tradition range of weighing is based on lever, after develop into pellet type (spring) scale.Progress along with science and technology, on the basis of original scale, developed electronic scales, electronic scales is divided into small-sized and large-scale two kinds, and small-size electronic scale is called electronic balance because of the high people's custom of its precision, and large electronic scale is called platform scale again, be mainly used in the big mass objects of weighing, be subjected to the restriction of sensor resolution and electronic scales structure, often cause its weighing precision not high, do not satisfy the requirement of scientific research owing to system centre is unstable.
Summary of the invention
, cause system's unbalance when Measuring Object and influence the problem of measuring accuracy because the restriction of himself structure in order to reduce large electronic scale, the present invention proposes a kind of high novel high-precision electronic scale.
Electronic scales of the present invention is made up of supporting construction and three weight sensors, described supporting construction is made up of three isometric channel-section steels, one end of described three channel-section steels is fixed together, and the angle between adjacent two channel-section steels is 120 ° arbitrarily, and three weight sensors are separately fixed on the upper surface of three channel-section steels.
The present invention adopts the high channel-section steel of intensity to be welded into the umbrella shape triangular support structure, differ 120 ° between adjacent two channel-section steels, the upper end of every channel-section steel is fixed the weight sensor of a resolution appropriateness, in use, triangular support structure is placed in the plane, then object to be claimed is placed on this gusseted structure, make and wait to claim object directly to contact simultaneously with three weight sensors, at this moment, gather the weighing-up wave of three weight sensors, obtain to wait to claim the weight of object.Electronic scales of the present invention can keep sensor to contact with treating the direct of weighing object, prevent that large electronic scale system crank is to the influence of weighing precision in the past, can effectively overcome the not high shortcoming of other large electronic scale weighing precisions, reach the purpose of the weighing precision that requires.
Electronic scales of the present invention is novel structure not only, and its weighing precision height, and during at 3000kg-5000kg, weighing precision can reach 50g, far above existing similar electronic scales, can satisfy the requirement of scientific experimentation in weighing object gross mass.
Description of drawings
Fig. 1 is a scale vertical view of the present invention, and Fig. 2 is the front elevation of electronic scales of the present invention, and Fig. 3 is when adopting electronic scales Measuring Object of the present invention, and the position between the object under test concerns synoptic diagram.
Embodiment
Embodiment one: the described electronic scales of present embodiment is made up of supporting construction and three weight sensors 1, described supporting construction is made up of three isometric channel-section steels 2, one end of described three channel-section steels 2 is fixed together, and the angle between adjacent two channel-section steels 2 is 120 ° arbitrarily, and three weight sensors 1 are separately fixed on the upper surface of three channel-section steels 2.
In the present embodiment, the fixedly connected mode of three channel-section steels 2 can adopt the welding fixed form, makes the strength of joint height of three channel-section steels 2.
The described electronic scales of present embodiment in use, directly be placed on object under test 3 on the bracing frame, and directly contact with three weight sensors 1, realization is weighed, the signal output part of three weight sensors 1 can be connected with the measurement display device of existing electronic scales, realizes measuring the demonstration output of weight.
Embodiment two: present embodiment is that the difference at embodiment one described electronic scales is, the distance of the junction of three channel-section steels 2 of described three weight sensors, 1 distance is identical.
Embodiment three: present embodiment is that the difference at embodiment one or two described electronic scaless is, described electronic scales also comprises data acquisition unit 4, described data collector 4 is connected with the weight signal output terminal of three weight sensors 1 by three data lines, and described data acquisition unit 4 has the measurement data output port.
Present embodiment has increased data acquisition unit 4, and described data acquisition unit 4 is used to gather the weight signal of three weight sensors 1, and calculates acquisition according to three weight signals that collect and measure weight signal.The data acquisition unit 4 that present embodiment increased has the measurement data output port, when reality is used, this data-out port can be connected with equipment such as display, data-carrier store, printing device, realize measuring the defeated storage of demonstration or the printout of weight information, can also be connected with data transmission set, realize the measurement data long-distance transmissions.
Aforementioned display device, data-carrier store or printing device also can be parts of electronic scales.At this moment, the data input pin of described display, data-carrier store or printing device is connected with the measurement data output port of data acquisition unit 4.
The electronic scales of present embodiment in use, referring to shown in Figure 3, object under test 3 is placed on three weight sensors 1 on the supporting construction, makes the bottom of object under test 3 contact with three weight sensors 1 simultaneously, three weight sensors 1 are connected with data acquisition unit 4 by data line.