CN201340406Y - Moisture tester - Google Patents
Moisture tester Download PDFInfo
- Publication number
- CN201340406Y CN201340406Y CNU2009200182930U CN200920018293U CN201340406Y CN 201340406 Y CN201340406 Y CN 201340406Y CN U2009200182930 U CNU2009200182930 U CN U2009200182930U CN 200920018293 U CN200920018293 U CN 200920018293U CN 201340406 Y CN201340406 Y CN 201340406Y
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- processing module
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- measuring
- data processing
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- Expired - Lifetime
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Abstract
The utility model provides a moisture tester, wherein a measuring and processing circuit is fixed in the measuring main body, the front end of the measuring main body has two test electrodes, the electrode cap is shrinking on the front end of the measuring main body, the test electrodes and liquid crystal display screen is electrically connected with the measuring and processing circuit respectively; a battery cover and push-buttons are fixed on the measuring main body; the measuring and processing circuit comprises a data-processing module, an input module and an output module connected with the data-processing module, a push-button and a background lamp circuit are connected with the data-processing module respectively, the test electrodes are conncted with the input module; the data-processing module transmits information sensed by the input module into the output module for displaying corresponding numerical value after treating by the data-processing module. Compared with prior art, the tester of the utility model has a simple internal circuit, low cost and a wide range of application, and can measure humidity, fahreheit and celsius of environment, and has advantages of small volume, light weight, convenient operation and reliable measuring result.
Description
Technical field
The utility model relates to a kind of measurement mechanism of moisture content of material, especially can measure a kind of moisture tester of timber, hard material and environment temperature.
Background technology
As everyone knows, when using electronic device to measure the humidity of timber, environment temperature is one of key factor that influences the moisture measurement accuracy, the tester often need be with current environmental temperature as a reference when recording timber moisture, and existing timber moisture tester is single wood moisture content test function mostly, and present moisture tester causes the volume of instrument excessive because of circuit level is low, be not easy to carry, and meet lower hard material of some water percentage such as gypsum, cement etc. are because instrument scope of application different measuring result has bigger deviation.
The utility model content
For solving the single design defect of above-mentioned timber moisture measurement apparatus function, the utility model aims to provide a kind of moisture tester.
The technical scheme in the invention for solving the above technical problem is: a kind of moisture tester, measure body interior and have the measurement treatment circuit, measure body front end two test electrodes are arranged, electrode cap is electrically connected with the measurement treatment circuit respectively with measurement body front end fit, test electrode, LCDs; Measure main body and be provided with battery cover and button; It is characterized in that: measure in the treatment circuit and be provided with data processing module, the load module and the output module that are connected with this module, a button, background light circuit are connected with data processing module respectively, and test electrode is connected with load module; Be sent to output module after the information that data processing module senses load module is handled by data processing module and show respective value.
The utility model data processing module is the HT46R47 microprocessor chip, load module is made up of resistance measuring circuit and temperature sensing circuit, resistance measuring circuit, temperature sensing circuit output terminal are connected with data processing module function pin, and output module is that model is that 1621 LCD chip for driving and LCDs connect to form; Control timber moisture measurement of the present utility model, material humidity measurement, Fahrenheit environment temperature and 4 kinds of measurement patterns of environment temperature Celsius by embedded software, and control start, bright, the mode switch of background light by single button.
Moisture measurement of the present utility model is to adopt the function of resistance measuring circuit to realize, high humidity equivalence resistance is little, otherwise it is then big, the input stage of circuit comes to provide voltage variety to the face mating type field effect transistor Q1 of back level by the dynamic resistance characteristic of utilizing a PNP triode Q2, utilize field effect transistor Q1 input impedance height, overstate the high characteristics of leading, can detect variation up to the non-essential resistance more than 500M ohm.The working point of this grade is chosen in the variable resistor district, the variation of the faint current potential of the field effect transistor G utmost point is exported from the D utmost point after anti-phase amplification, after the inverting input of subordinate's operational amplifier once amplifies again, the ADC input end of delivering to the HT46R47 microprocessor chip then carries out the AD conversion, this microprocessor chip is measured temperature by the change in resistance of NTC thermistor in the collecting temperature testing circuit simultaneously, by internal processes the data of different measuring pattern are handled, after giving lcd drive chip after the measurement result processing, finally output to liquid crystal display, and control button, actions such as backlight, this example also utilizes an IO mouth output voltage of HT46R47 microprocessor chip to power to periphery circuit, turn-offs peripheral circuit by this IO mouth in the time of dormancy and reduces power consumption.
Compared to prior art, the utility model internal circuit is simple, with low cost, and is applied widely, can measure the humidity of timber, hard material and Fahrenheit, environment temperature Celsius, and volume is little in light weight, operates easy to carryly, and measurement result is reliable.
Description of drawings
Fig. 1 is the utility model external structure synoptic diagram;
Fig. 2 is the utility model external circuit structural representation.
Among the figure: 1. measure main body; 1.1. test electrode; 1.2. LCDs; 1.3. button; 1.4. battery cover; 1.5. electrode cap; 2. measurement treatment circuit; 2.1. data processing module; 2.2. load module; 2.3. output module; 2.4. background light circuit.
Embodiment
Below in conjunction with drawings and Examples the utility model is further specified.
As depicted in figs. 1 and 2, a kind of moisture tester, measure main body 1 inside and have the treatment circuit 2 of measurement, measure main body 1 front end two test electrodes 1.1 are arranged, electrode cap 1.5 is protected test electrode 1.1 with measuring main body 1 front end fit, and test electrode 1.1, LCDs 1.2 are electrically connected with measurement treatment circuit 2 respectively; Measure main body 1 and be provided with battery cover 1.4 and SW1 button 1.3; Measuring and being provided with data processing module 2.1 in the treatment circuit 2 is the HT46R47 microprocessor chip, load module 2.2 that is connected with this module and output module 2.3, load module 2.2 is made up of resistance measuring circuit and temperature sensing circuit, and resistance measuring circuit, temperature sensing circuit output terminal are connected with the function pin of HT46R47 microprocessor chip; Output module 2.3 is that 1621 LCD chip for driving and LCDs 1.2 connect to form for model, and a button 1.3, background light circuit 2.4 are connected with the HT46R47 microprocessor chip respectively, and test electrode 1.1 is connected with resistance measuring circuit; The information processing that the HT46R47 microprocessor chip senses load module 2.2 is sent to display screen 1.2 and shows respective value.
Measuring operation of the present utility model is as follows: slip off battery cover 1.4, put 4 joint LR44 button cells into, press 1.3 starts of SW1 button, select required measurement pattern, under open state, press ﹠ hold and 1.3 do not put about 3 seconds, instrument enters the pattern of setting, this moment, display screen 1.2 readings disappeared, and icon begins flicker.Be provided with under the pattern, can between following several measurement patterns, switching by SW1 button 1.3 again: timber moisture measurement pattern (
The flicker), the material humidity measurement pattern (
The flicker), ambient temperature measurement pattern Celsius (
The flicker), Fahrenheit ambient temperature measurement pattern (
Flicker).When instrument is in required measurement pattern, shut-down operation, after 3 seconds, instrument will withdraw from the pattern of setting automatically, can begin to measure.Temperature survey, display screen 1.2 will directly show current environmental temperature, timber and Materials Measurement: test electrode 1.1 is inserted timber or material to be determined.Display screen 1.2 shows survey measurements, and no to scale will show " OL ".Automatically shutdown: under the timber/material test pattern, if operation or reading are not constant in 15 seconds, instrument will shut down automatically and enter park mode; Under the temperature test pattern, instrument will shut down automatically after 15 seconds; No matter under which kind of pattern, after the low-voltage symbol occurred, instrument all will shutdown automatically after about 15 seconds; SW1 button 1.3 makes background light circuit 2.4 work light backlight under the open state, do not have operation after 3 seconds backlight extinguish.
Moisture measurement of the present utility model is to adopt the function of resistance measuring circuit to realize, high humidity equivalence resistance is little, otherwise then big.The input stage of circuit comes to provide voltage variety to the face mating type field effect transistor Q1 of back level by the dynamic resistance characteristic of utilizing a PNP triode Q2, utilize field effect transistor Q1 input impedance height, overstate the high characteristics of leading, can detect variation up to the non-essential resistance more than 500M ohm, the working point of this grade is chosen in the variable resistor district, the variation of the faint current potential of the G utmost point of field effect transistor Q1 is exported from the D utmost point after anti-phase amplification, after the inverting input of the operational amplifier U3A of subordinate once amplifies again, the ADC input end of delivering to the HT46R47 microprocessor chip carries out the AD conversion, this microprocessor chip is measured temperature by the change in resistance of NTC thermistor R23 in the collecting temperature testing circuit simultaneously, by internal processes the data of different measuring pattern are handled, give model after measurement result handled and be and finally output to LCDs 1.2 after 1621 the LCD chip for driving and show, SW1 button 1.3 control backlights and mode switch action, this example also utilizes an IO mouth output voltage of HT46R47 microprocessor chip to power to periphery circuit, turn-offs the purpose that peripheral circuit reaches low-power consumption by this IO mouth in the time of dormancy.
Above embodiment only supplies the usefulness of the utility model explanation; non-to restriction of the present utility model; those skilled in the art is under the situation that does not break away from design main idea of the present utility model and protection domain, and the technical scheme that can make the various conversion that are equal to also belongs to category of the present utility model.
Claims (4)
1. a moisture tester is measured body interior and is had the measurement treatment circuit, and measuring body front end has two test electrodes, and electrode cap is electrically connected with the measurement treatment circuit respectively with measurement body front end fit, test electrode, LCDs; Measure main body and be provided with battery cover and button; It is characterized in that: measure in the treatment circuit and be provided with data processing module, the load module and the output module that are connected with this module, a button, background light circuit are connected with data processing module respectively, and test electrode is connected with load module; Be sent to output module after the information that data processing module senses load module is handled by data processing module and show respective value.
2. a kind of moisture tester as claimed in claim 1 is characterized in that: data processing module is the HT46R47 microprocessor chip;
3. a kind of moisture tester as claimed in claim 1 is characterized in that: load module is made up of resistance measuring circuit and temperature sensing circuit, and resistance measuring circuit, temperature sensing circuit output terminal are connected with data processing module function pin.
4. a kind of moisture tester as claimed in claim 1 is characterized in that: output module is that model is that 1621 LCD chip for driving and LCDs connect to form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200182930U CN201340406Y (en) | 2009-01-19 | 2009-01-19 | Moisture tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200182930U CN201340406Y (en) | 2009-01-19 | 2009-01-19 | Moisture tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201340406Y true CN201340406Y (en) | 2009-11-04 |
Family
ID=41235949
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009200182930U Expired - Lifetime CN201340406Y (en) | 2009-01-19 | 2009-01-19 | Moisture tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201340406Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106200473A (en) * | 2016-07-28 | 2016-12-07 | 合肥三伍机械有限公司 | A kind of drying machine man machine interface and Moisture Meter converting system |
-
2009
- 2009-01-19 CN CNU2009200182930U patent/CN201340406Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106200473A (en) * | 2016-07-28 | 2016-12-07 | 合肥三伍机械有限公司 | A kind of drying machine man machine interface and Moisture Meter converting system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20091104 |
|
| CX01 | Expiry of patent term |