CN2255614Y

CN2255614Y - Electronic digital alcohol-degree measuring device

Info

Publication number: CN2255614Y
Application number: CN 96216256
Authority: CN
Inventors: 邹太龑
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-07-02
Filing date: 1996-07-02
Publication date: 1997-06-04
Anticipated expiration: 2006-07-02

Abstract

The utility model provides an electronic instrument for measuring alcohol content (i.e. alcohol degree) in water, which is used for quickly, conveniently and visually displaying the value of the alcohol degree. A chemical sensor and a temperature sensor which are composed of effect transistors of floating grid fields respectively convert the alcohol degree and temperature into electric signals, data are processed through a computer and then are automatically corrected to the value of the standard alcohol degree after the electric signals are amplified and corrected, and as long as a button only needs to be pressed by a user, the values of the temperature, the wine degree and the standard wine degree are directly displayed by a display screen or printed by a printer.

Description

Electronic digital type wine degree meter

The utility model is the electronic device that has proposed alcohol content in a kind of mensuration water (being the wine degree).By chemical sensor and temperature sensor respectively degree of filling a wine cup for become electric signal with temperature transition, after amplifying, by computing, be corrected to standard wine degree after, show or the printer prints result by charactron.

At present the assay method of wine degree is known pycnometer method and the vinometer method made according to law of buoyancy.These two kinds of method complex operations, time-consuming taking a lot of work.Because the wine degree is to represent with the percent by volume of second alcohol and water.Under different temperatures, owing to expand with heat and contract with cold, the volume of wine sample can change, so the wine degree also can change, and in known conventional method, must consult criterion numeral and represent to obtain standard wine degree value (being equivalent to the wine degree under certain specified temp).In tabling look-up process, calculating, operation carelessness is arranged slightly, the very easy personal error that causes like this.Make the obtained wine thereby degree inaccurate, cause economic loss.

The purpose of this utility model provides a kind of digital wine degree meter, when mensuration wine is spent, the sample of only need filling a wine cup for is poured into and is measured in the tube, press button, can go out temperature, wine degree and standard wine degree by charactron demonstration or printer prints, measure fast, simple to operate, reading is eye-catching, avoids all personal errors.

The purpose of this utility model reaches by following technical proposals: probe is in the measurement tube of fixed volume, being installed in constant volume measures chemical sensor on the tube base and temperature sensing degree of filling a wine cup for and temperature changes into electric signal output respectively, two electrodes of the source electrode of chemical sensor and drain electrode and temperature sensor are connected respectively to two groups of amplifier input terminal by electric wire, the output terminal that amplifies the two groups of amplifiers in back is connected to two input ends of multi-way switch, under computer control, multi-way switch can be input to analog to digital converter to one group signal wherein and be transformed into digital signal, by computer program digital signal is carried out outputing to the charactron demonstration again after the digital processing, or output to printer prints, when computing machine by panel on during the button input instruction, get final product the control computer displays temperature or show the wine degree, computer software is converted into standard wine degree to temperature and wine degree in mathematical processes.Measuring tube bottom, the temperature-sensing element (device) of installation and wine degree sensitive element.Temperature-sensing element (device) can adopt thermistor or thermopair.Wine degree sensitivity element is a kind of chemical sensor that is made of the hanging net grid field effect transistor.The alcohol content that it can be filled a wine cup in the sample converts electric signal to.The work commercial weight of hanging net grid field effect transistor is that field effect transistor one grid is the platinum guaze of one deck porous, leaves two microns blank between grid and the transistor gate area.The aluminium lamination of elder generation's two micron thickness in gate regions deposit during manufacturing, platinum layer in the method deposit of using vacuum evaporation on the aluminium lamination again etches mesh with photoetching process, erodes the aluminium lamination of following two micron thickness again, thereby forms the grid that is suspended on the gate regions.When ethanol molecule and a certain proportion of hydrone enter into gate regions,, thereby make the electric current difference that flows through between the drain electrode of field effect transistor and the source electrode because the specific inductive capacity difference of two kinds of molecules makes the current potential difference on the gate regions.Like this chemical sensor just degree of filling a wine cup for converted electric signal to.The process amplifying circuit is sent into microcomputer after this electric signal is amplified.The wine degree signal that temperature signal that computing machine is sent here temperature sensor respectively and chemical sensor are sent here is proofreaied and correct, the temperature correction of calculating and wine degree, be transformed into standard wine degree (replacing manually calculating and the work of tabling look-up), at last the result outputed to charactron and show or printer prints.Can obtain temperature, wine degree and standard wine degree value at once.

Owing to adopt such scheme of the present utility model, can make things convenient for the wine degree value that promptly reads the wine sample.All numerical evaluation and the work of tabling look-up are finished from fortune by computing machine.Net result shows or printer prints by charactron, therefore have directly perceived, convenient, fast, can avoid characteristics such as personal error.

Further specify of the present utility model below in conjunction with drawings and Examples.

Fig. 1 is a functional-block diagram of the present utility model

Fig. 2 is that constant volume is measured barrel structure figure in the utility model

Fig. 3 controls electronic circuitry in the utility model

1. temperature sensors among the figure; 2. chemical sensor; 3. overflow groove; 4. constant volume is measured tube; 5. cable plug; 6. base; A. constant volume is measured the tube part; B. electronic circuit part; 102A. amplifying circuit; 102B. amplifying circuit; 103. multi-way switch; 104.A/D conversion; 105A. button; 105B. button; 106. computing machine; 107. software mathematical operation; 108. display screen; 109. printer; 200. power supply.

In Fig. 1, temperature sensor (1), chemical sensor (2) link to each other with (102) with amplifying circuit (102A) respectively, and amplifying circuit (102) links to each other with multi-way switch (103), A/D conversion (105), computing machine (106).Computing machine performs mathematical calculations (107) by software, and the number of degrees value of filling a wine cup for shows by display (108) or printer (109) is printed, and computing machine (106) is connected with button (105), and it is temperature or wine degree that button (105) is used for selecting shown numerical value.Power supply (200) provides power supply for respectively amplifying circuit (102), display (108), printer (109), computing machine (106).

In Fig. 2, overflow groove (3) is welded on constant volume and measures on the tube (4), the floss hole of overflow groove (3) bottom can be measured the wine that tin (4) is overflowed to constant volume and emit, and avoids liquid level and constant volume in the overflow groove (3) to measure tube (4) liquid level same affect accuracy of measurement.Constant volume is measured tube (4) bottom and is connected with base, and temperature sensor (1) and chemical sensor (2) are installed in the inside of base (6), and it can be converted to electric signal to the temperature and the wine degree of the wine liquid in the constant volume measurement tube (4).Through cable and plug (5) signal conveys to amplifier (102) being sent into computing machine (106) again carries out late time data and handles.

In Fig. 3, the electric signal that chemical sensor (2), temperature sensor (1) produce is sent into respectively in 102A and the 102B amplifier, voltage after amplifying is sent into the input end IN7 of A/D converter (104) respectively, output signal on the PO of microcomputer 8031 mouth, by button (105) control down.Because the PO mouth is a two-way delivery outlet, when button (105A) when pressing, microcomputer reads the button input signal, and makes the inner multi-way switch (103) of A/D converter (104) connect the output signal of amplifier (102A), i.e. input end IN7.Same multi-way switch (103) is connected input end IN6 when button (105B) when pressing, and AD converter (104) is changed input electrical signal, converts digital quantity to, and computing machine (106) carries out digital processing under software (107) is controlled.The result delivers to display screen (108) and printer (109) is printed.

(74LS373) that the code translator (74LSI38) of cooperation 8031 one chip microcomputer work latchs among Fig. 3, identical with known single chip circuit, its method of attachment is expression in the drawings.

As mentioned above, the utility model electronic digital type wine degree meter and former pycnometer method and vinometer method have the different of essence on from the principle to the structure.It is to proofread and correct the accurate wine degree value that draws under different temperatures by chemical sensor and temperature sensor by microcomputer, loaded down with trivial details operation such as avoid manually tabling look-up, and the time and labour saving, simple in structure, processing ease.

Claims

1. electronics mathematical expression oenometer, it comprises measurement tube and the electronic circuit part with definite capacity, it is characterized in that popping one's head in the measurement tube of fixed volume, be installed in chemical sensor and temperature sensor degree of filling a wine cup for and the output of temperature transition electric signal respectively on the constant volume measurement tube base, two electrodes of the source electrode of chemical sensor and drain electrode and temperature sensor are connected respectively to two groups of input ends that are placed on device by electric wire, the output terminal that amplifies the two groups of amplifiers in back is connected to two input ends of multi-way switch, multi-way switch can be input to one group signal wherein in the analog to digital converter, output to by A/D converter again and carry out in the computing machine being converted into standard wine degree after the mathematics manipulation, output to charactron and show, or output to printer prints.

2. according to the described digital wine degree meter of claim 1, it is characterized in that measuring tube is a constant volume graduated cylinder, its top is that an overflow groove is coupled, isopipe root has an osculum to play the Overflow drainage effect, measure tube bottom at constant volume temperature sensor and two probes of chemical sensor are installed, be fixed on the base, the side of base is installed in socket.

3. according to the described digital wine degree meter of claim 1, it is characterized in that described computing machine is connected with charactron, charactron is the display device that shows wine degree or temperature or standard wine degree.