A kind of test tube that shows liquid volume
Technical field
The utility model relates to the test tube that is used to measure liquid volume in the laboratory, particularly a kind of test tube that shows liquid volume.
Background technology
As everyone knows, test tube is a kind of experiment utensil of in the laboratory, measuring liquid volume, and its primary structure is on the container that a transparent material is processed, to stamp scale, and this container is lower end closed, the unlimited pipe shape in upper end usually.During use, liquid to be measured is poured in vitro, and then liquid static be the volume of reading liquid through the corresponding scale in its page concave point place.
But the number reading method of this traditional test tube all is to observe and read through people's naked eyes, and its degree of accuracy often can't ensure, so often causes the inaccurate of experimental data easily, or even the failure of experiment.
In addition; The scale that is imprinted on the test tube outer wall is easy to become unclear in use for some time; This situation might cause owing to measuring liquid, also possibly be because often contact of staff causes, in any case; The test tube that loses clear scale mark can not be used further to experiment, cause bigger waste.
The utility model content
The purpose of the utility model is to provide a kind of test tube that shows liquid volume; Mainly solving tradition leans on the eye-observation scale to read the test tube of tracer liquid volume; When using, it often can't accurately read the technical matters of liquid volume data; Help further to improve measuring accuracy, improve the experiment quality.
For realizing above-mentioned purpose, the utility model is to realize like this.
A kind of test tube that shows liquid volume, it comprises the test tube body, it is characterized in that: the control display panel that has been sticked on this test tube body, have display screen on this control display panel and control button, this test tube body bottom is provided with a pressure transducer; The signal output part of this pressure transducer is connected to the signal input part of a main control unit, and this controls the control end that button is connected to main control unit, and this display screen is connected to the shows signal output terminal of main control unit.
The described test tube that shows liquid volume is characterized in that: described pressure transducer connects main control unit through A/D converter.
The described test tube that shows liquid volume is characterized in that: described test tube body is a transparent material, has scale on it.
The described test tube that shows liquid volume is characterized in that: described main control unit is embedded in the control display panel.
The utility model is compared with existing mechanism, has following advantage.
1, the utility model helps to improve the precision of liquid volume measurement, improves the accuracy and the quality of experiment.
2, the utility model product can be read the liquid volume parameter through display screen accurate and visually, the error that produces when avoiding the operation of human body naked eyes.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Fig. 2 is the circuit structure diagram of the utility model.
Embodiment
See also Fig. 1,2, the utility model discloses a kind of test tube that shows liquid volume.As shown in the figure: it comprises test tube body 1, it is characterized in that: the control display panel 2 that has been sticked on this test tube body 1, and have display screen 21 on this control display panel 2 and control button 22, this test tube body 1 bottom is provided with a pressure transducer 3; The signal output part of this pressure transducer 3 is connected to the signal input part of a main control unit 4, and this controls the control end that button 22 is connected to main control unit 4, and this display screen 21 is connected to the shows signal output terminal of main control unit 4.
In the utility model, described main control unit 4 can adopt the AT89C51 series of products of ATMEL.Especially wherein AT89C2051 product, it is a kind of single-chip microcomputer with 2K byte flicker programmable and erasable ROM (read-only memory), the erasable read-only memory of single-chip microcomputer can repetitive erasing 100 times.This device adopts ATMEL high density nonvolatile memory manufacturing technology to make, and is compatible mutually with the MCS-51 instruction set and the output pin of industrial standard.
When the utility model uses; Earlier through in the storer of controlling button 22 inputs density of liquid input to be measured main control unit 4; The liquid kind of perhaps setting (density parameter that has this correspondence liquid kind in the storer) through the selector button input; Then liquid is joined in vitro, after liquid remained static, its weight parameter was read into main control unit 4 through pressure transducer 3; Main control unit 4 can obtain the volume reading accurately of liquid through related operation, and through display screen 21 this reading is shown.It is not only easy to operate, and measuring operation very accurately.
As a kind of optimal way, described pressure transducer 3 connects main control unit 4 through A/D converter 5.
As a kind of optimal way, described test tube body 1 is a transparent material, has scale on it.Can take into account traditional metering system like this.
As a kind of optimal way, described main control unit 4 is embedded in control display panel 2.Help to reduce the volume of circuit structure like this.
Being merely the preferred embodiment of the utility model in sum, is not the practical range that is used for limiting the utility model.Be that all equivalences of doing according to the content of the utility model claim change and modification, all should be the technological category of the utility model.