CN105334405A - Electrical characteristic detector for liquid drink - Google Patents
Electrical characteristic detector for liquid drink Download PDFInfo
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- CN105334405A CN105334405A CN201410320516.4A CN201410320516A CN105334405A CN 105334405 A CN105334405 A CN 105334405A CN 201410320516 A CN201410320516 A CN 201410320516A CN 105334405 A CN105334405 A CN 105334405A
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Abstract
The invention discloses an electrical characteristic detector for a liquid drink, which comprises a signal loading and collecting unit, a signal processing and analyzing unit and a power supply circuit, and is characterized in that the signal loading and collecting unit is electrically connected with the signal processing and analyzing unit; the signal processing and analyzing unit sends excitation signals to the signal loading and collecting unit; the signal loading and collecting unit is used for receiving the excitation signals, transmitting the excitation signals to a liquid drink sample, collecting response signals of the liquid drink sample under the action of the excitation signals and transmitting the response signals to the signal processing and analyzing unit; and the signal processing and analyzing unit is used for receiving the response signals, and carrying out analysis and processing according to the response signals so as to acquire electrical characteristic parameters of the liquid drink sample. The detector disclosed by the invention is convenient to carry, can realize detection for the liquid drink at any time and any place, is simple in detection process and facilitates use at any time in daily life.
Description
Technical field
The present invention relates to integrated circuit and systems design area, be specifically related to a kind of electrical characteristic detector of liquid beverage.
Background technology
Liquid beverage is the indispensable drink of most of compatriots, but the quality of liquid beverage is uneven on the market at present, want the true and false quality of differentiation one bottle of liquid beverage, the content of usual needs to wherein contained various materials carries out the analysis of quantitative and qualitative analysis, as alcoholic strength contained in wine, total acid, total ester, and harmful methyl alcohol, fusel oil, heavy metal etc.But the detection of these materials needs the instrument relying on modern precision, its testing process is also very complicated simultaneously.
For red wine, the red wine quality discrimination of current China mainly adopts two class methods, and one is chemical analysis method, and as paper chromatography, gas chromatography, liquid chromatography etc., the instrument and equipment needed for the method is huger, and testing process is complicated, and consuming time; Two is methods of sensory evaluation, and the method needs outstanding teacher of the sampling wine, and human cost is higher, can not detect on a large scale.For this COMPLEX MIXED objects system of red wine, all there is time-consuming, effort, expense thing shortcoming in these two kinds of methods, limits its widely using in commercial production and the field of circulation, the testing quickly and easily of more not competent scene.
At present, all need carry out analysis according to related standards before liquid beverage dispatches from the factory to detect, whether have chemical additive matter to detect in food, whether exceed standard, whether fresh etc., but this supervision generally adopts the method for sampling check to carry out, and sampling check is also only carry out detecting for the unitem of each product, supervision is limited, often can not ensure that the red wine in all markets, supermarket is all safety approval.Simultaneously for inlet liquid drink, also can only take the test mode of sampling, the quality of inlet liquid drink can not be ensured.But, do not have a kind of be applicable to the common people carry out pick-up unit safely and fast for liquid beverage, go to judge that whether the liquid beverage bought superior in quality, avoiding having dust thrown into the eyes suffers economic loss.
Summary of the invention
The invention provides a kind of electrical characteristic detector of liquid beverage, solve in current liquid beverage quality testing and on-the-spot detection and existing liquid beverage quality testing quickly and easily cannot can not be applicable to the problem of the common people.
The invention provides a kind of electrical characteristic detector of liquid beverage, comprise signal loading and collecting unit, signal processing analysis unit and power circuit;
Described signal loading is electrically connected with described signal processing analysis unit with collecting unit; Described signal processing analysis unit sends pumping signal to described signal loading and collecting unit; Described signal loading and collecting unit are for receiving described pumping signal and pumping signal being sent in liquid beverage sample, and described response signal is also sent to described signal processing analysis unit by the response signal of collection liquid drink sample under this pumping signal effect;
Described signal processing analysis unit for receiving described response signal, and carries out according to described response signal the electrical characteristic parameter that analyzing and processing obtains liquid beverage sample;
Described power circuit is connected with collecting unit and signal processing analysis unit with described signal loading respectively, for providing electric energy for described signal loading and collecting unit and signal processing analysis unit.
Further, described signal loading and collecting unit comprise pumping signal and load electrod-array and response signal acquisition electrode array;
Described pumping signal loads electrod-array and is electrically connected with described signal processing analysis unit, for receiving pumping signal and being sent in liquid beverage sample by described pumping signal;
Described response signal is also sent to described signal processing analysis unit by the response signal of described response signal acquisition electrode array acquisition liquid beverage sample under this pumping signal effect.
Further, described pumping signal loads electrod-array and is at least two, and the pumping signal described at least two loads electrod-array and lays respectively at around described response signal acquisition electrode array; Described response signal acquisition electrode array is arranged in the matrix form by multiple electrode and forms.
Further, described signal processing analysis unit comprises driving source module, analog-to-digital conversion module and signal processing module;
Described driving source module and described pumping signal load electrod-array and are connected, and be sent to described pumping signal load electrod-array for generation of pumping signal and by pumping signal;
Described analog-to-digital conversion module is connected with described signal processing module, for receiving response signal, described response signal being converted to digital signal and being sent to signal processing module;
Described signal processing module, for receiving digital signal, carries out to digital signal the electrical characteristic parameter that analyzing and processing obtains liquid beverage sample.
Further, described signal processing analysis unit also comprises amplification filtering module, memory module, clock module and temperature compensation module;
Described amplification filtering module is connected with described response signal acquisition electrode array and analog-to-digital conversion module respectively, is sent to described analog-to-digital conversion module after carrying out amplification filtering;
Described memory module is connected with described signal processing module, for the electrical characteristic parameter of storage of liquids drink sample;
Described clock module is connected with driving source module, amplification filtering module, analog-to-digital conversion module, signal processing module and memory module respectively, for described driving source module, amplification filtering module, analog-to-digital conversion module, signal processing module and memory module provide clock signal;
Described temperature compensation module is connected with described signal processing module, for tracer liquid drink sample temperature and described temperature is sent to signal processing module; Described signal processing module is revised according to the electrical characteristic parameter of described temperature to liquid beverage sample.
Further, described detector also comprises interactive unit; Described interactive unit comprises Wireless communication interface module, LCD display and key-press module;
Described Wireless communication interface module is connected with described memory module and signal processing module respectively, be sent to memory module for the just data of cloud database to carry out storing or the data of cloud database being sent to signal processing module, and the electrical characteristic parameter of liquid beverage sample is sent to cloud database;
Described LCD display is connected with described signal processing module, for showing the analysis result of operation instruction and food quality;
Described key-press module comprises the button controlling detector and open and close.
Further, described signal processing module reads the electrical characteristic parameter of the liquid beverage of memory module, and is analyzed by its electrical characteristic parameter with liquid beverage sample, the result of analysis is sent to LCD display and shows.
Further, described signal processing module receives by Wireless communication interface module the electrical characteristic parameter of liquid beverage that cloud database stores, and is analyzed by its electrical characteristic parameter with liquid beverage sample, and the result of analysis is sent to LCD display and shows.
Further, described power circuit also comprises power consumption control module and battery, and described power consumption control module is for controlling detector cut-out power supply to each unit automatically after it quits work certain hour.
Further, described detector also comprises main body cover and tin hat;
Described signal processing analysis unit, power circuit are arranged in described main body cover, and described LCD display is positioned on main body cover; Described key-press module is positioned at the top of described main body cover, and described signal loading and collecting unit are positioned at the tail end of described main body cover and expose shell; The tail end that described tin hat is fastened on main body cover exposes signal loading and collecting unit for hiding described signal loading and collecting unit and can opening.
The invention has the beneficial effects as follows: when adopting the electrical characteristics of electrical characteristic detector tracer liquid drink of liquid beverage of the present invention, response signal is also sent to signal processing analysis unit by response signal under this pumping signal effect of signal loading and collecting unit collection liquid drink sample, and signal processing analysis unit carries out according to response signal the electrical characteristic parameter that analyzing and processing obtains liquid beverage sample.Detector of the present invention is easy to carry, and can realize detecting liquid beverage whenever and wherever possible, and testing process is simple, facilitates in daily life and uses at any time.
Accompanying drawing explanation
Fig. 1 is the structural representation of the electrical characteristic detector of a kind of liquid beverage of the present invention;
Fig. 2 is the system construction drawing of electrical characteristic detector in a kind of embodiment of a kind of liquid beverage of the present invention;
Fig. 3 is signal loading of the present invention and the collecting unit schematic diagram in another kind of embodiment;
Fig. 4 is the structural representation of driving source module of the present invention in a kind of embodiment;
Fig. 5 is the schematic appearance of electrical characteristic detector in a kind of embodiment of a kind of liquid beverage of the present invention;
Fig. 6 is the use schematic flow sheet of the electrical characteristic detector of a kind of liquid beverage of the present invention.
Embodiment
Along with the development of various food safety detection technology, the electrical characteristic parameter detection method of material starts slowly to occur in field of food safety.The electrical characteristics of food refer to food material to be under given conditions in electric field self the character cashing out.For the liquid beverage comprising red wine, white wine, beer and various beverage, quality different its concrete component content, ratio etc. all also exist larger difference, and therefore its electrical characteristic parameter also also exists certain difference.Therefore can determine that the electrical characteristic parameter scope of colory liquid beverage is as detection reference by experiment, just can carry out detection to liquid beverage to be measured and confirm its quality.Adopt red wine as the liquid beverage for measuring in the specific embodiment of the present invention.
By reference to the accompanying drawings the present invention is described in further detail below by embodiment.
Embodiment one:
Please refer to Fig. 1, a kind of electrical characteristic detector of liquid beverage, comprise signal loading and collecting unit 1, signal processing analysis unit 2 and power circuit 4.
Signal loading is electrically connected with signal processing analysis unit 2 with collecting unit 1.Signal processing analysis unit 2 sends pumping signal to signal loading and collecting unit 1.Signal loading and collecting unit 1 are for receiving pumping signal and pumping signal being sent in red wine sample, and signal loading and collecting unit 1 gather the response signal of red wine sample under this pumping signal effect and response signal is sent to signal processing analysis unit 2.
Signal processing analysis unit 2 for receiving response signal, and carries out according to response signal the electrical characteristic parameter that analyzing and processing obtains red wine sample.The electrical characteristic parameter of red wine sample comprises impedance, admittance, specific inductive capacity etc., and the high-quality red wine electrical characteristic parameter distribution situation obtained in this, as basis for estimation and great many of experiments carries out contrasting the quality status judging tested red wine.
Power circuit 4 is connected with collecting unit 1 and signal processing analysis unit 2 with signal loading respectively, for providing power supply signal for signal loading and collecting unit 1 and signal processing analysis unit 2.
As shown in Figures 2 and 3, signal loading and collecting unit 1 comprise pumping signal and load electrod-array 11 and response signal acquisition electrode array 12.Pumping signal loads electrod-array 11 and is electrically connected with signal processing analysis unit 2, for receiving pumping signal and pumping signal being sent in red wine sample.Response signal acquisition electrode array 12 gathers the response signal of red wine sample under this pumping signal effect, and response signal is sent to signal processing analysis unit 2.As shown in Figure 3, in the present embodiment, response signal acquisition electrode array 12 is the array arranged in the matrix form by multiple electrode, and its electrode adopts dangler to meet corresponding food hygienic standard; Be loaded in red wine sample in order to more effective by pumping signal, pumping signal loads electrod-array 11 and is at least two, and the pumping signal of at least two loads electrode array 11 row and lays respectively at response signal acquisition electrode array 12 around.
As shown in Figure 2, signal processing analysis unit 2 comprises driving source module 21, analog-to-digital conversion module 23 and signal processing module 24.Driving source module 21 and pumping signal load electrod-array 11 and are connected, and be sent to pumping signal load electrod-array 11 for generation of pumping signal and by pumping signal.Analog-to-digital conversion module 23 is connected with signal processing module 24, for receiving response signal, response signal being converted to digital signal and being sent to signal processing module 24.Signal processing module 24 is for receiving digital signal and carrying out to digital signal the electrical characteristic parameter that analyzing and processing obtains red wine sample.Easy understand, signal processing module 24 can be Micro-processor MCV, also can be FPGA and universal cpu etc.
In a kind of realization, as shown in Figures 2 and 3, signal processing analysis unit 2 also comprises memory module 25, amplification filtering module 22 clock module 26 and temperature compensation module 27.Memory module 25 is connected with signal processing module 24, for storing the electrical characteristic parameter of red wine sample.Amplification filtering module 22 is connected with response signal acquisition electrode array 12 and analog-to-digital conversion module 23 respectively, for receiving response signal, and is sent to analog-to-digital conversion module 23 after response signal is carried out amplification filtering.Clock module 26 is connected with driving source module 21, amplification filtering module 22, analog-to-digital conversion module 23, signal processing module 24 and memory module 25 respectively, for providing clock signal for driving source module 21, amplification filtering module 22, analog-to-digital conversion module 23, signal processing module 24 and memory module 25, and provide stable clock signal for other modules of detector.Temperature compensation module 27 is connected with signal processing module 24, for detecting the temperature of red wine sample and detected temperatures being sent to signal processing module 24; Signal processing module 24 is revised according to the electrical characteristic parameter of the detected temperatures received to red wine sample.
As shown in Figure 2 and Figure 4, driving source module 21 comprises Digital Frequency Synthesize module 201 and voltage-controlled current source 202.Digital Frequency Synthesize module 201 comprises frequency accumulator 2011, wave memorizer 2012, digital to analog converter 2013 and low-pass filter 2014.Frequency accumulator 2011 is connected with clock module 26 respectively and signal processing module 24 connects, and for the incoming frequency control word k that Received signal strength processing module 21 sends, wherein, the bit wide of incoming frequency control word k is L.Within a clock period, frequency accumulator 2011 couples of incoming frequency control word k carry out phase linearity and add up and the phase code after cumulative is sent to wave memorizer 2012.Wave memorizer 2012 is connected with frequency accumulator 2011 and digital to analog converter 2013 respectively, and amplitude code corresponding for the phase code received is sent to digital to analog converter 2013 by wave memorizer 2012.Digital to analog converter 2013 is connected with low-pass filter 2014, and the amplitude code received is converted to simulation step voltage and is sent to low-pass filter 2014 by digital to analog converter 2013.Low-pass filter 2014 is connected with voltage-controlled current source 202, and for carrying out filtering to simulation step voltage, filtering is simulated the noise of step voltage and filtered simulation step voltage is sent to voltage-controlled current source 202.Voltage-controlled current source 202 and pumping signal load electrod-array and are connected 11, for filtered simulation step voltage being converted to the pumping signal of current forms, and pumping signal are sent to pumping signal loading electrod-array 11.Digital Frequency Synthesize module 201 can produce 0-1Vpp, frequency coverage 100Hz-1MHz, frequency resolution is less than the analog voltage signal that 1Hz waveform can control sine wave output, square wave, triangular wave or sawtooth wave, amplitude and phase-adjustable, voltage signal is after voltage-controlled current source 202 is converted to current signal, and its waveform and signal frequency remain unchanged.
When adopting the electrical characteristic detector of the liquid beverage of the present embodiment to detect the electrical characteristics of red wine, signal loading and collecting unit 1 gather the response signal of red wine sample under this pumping signal effect and response signal are sent to signal processing analysis unit 2, and signal processing analysis unit 2 carries out according to response signal the electrical characteristic parameter that analyzing and processing obtains red wine sample.The detector of the present embodiment is easy to carry, and can realize detecting red wine whenever and wherever possible, and testing process is simple, facilitates in daily life and uses at any time.
Embodiment two:
As shown in Figure 2, the present embodiment is from the different of embodiment one, and the electrical characteristic detector of the liquid beverage of the present embodiment also comprises interactive unit 3.Interactive unit 3 comprises Wireless communication interface module 301, LCD display 302 and key-press module 303.Wireless communication interface module 301 is connected 24 with memory module 25 and signal processing module respectively, store for the data of cloud database are sent to memory module 25, realize the real-time update of the local data that memory module 25 stores, or the data of cloud database are sent to signal processing module 24; By Wireless communication interface module 301, the local data that memory module 25 stores can also be sent to cloud database to store, to enrich cloud database, or the data of signal processing module 24 real-time calling cloud database carry out data analysis when detector works.LCD display 302 is connected with signal processing module 24, for showing the analysis result of operation instruction and food quality.Key-press module 303 comprises the button controlling detector and open and close.Easy understand, the interactive software that the terminals such as the interactive unit 3 of the present embodiment and mobile phone, PC and panel computer are connected, for showing the analysis result of detector or using terminal operation detector.
In a kind of realization, as shown in Figure 2, power circuit 4 also comprises power consumption control module 401 and battery 402.Power consumption control module 401 is for controlling detector cut-out power supply to each unit automatically after it quits work certain hour.Battery 402 can be dry cell, or battery 402 also can be button cell.
In a kind of embodiment, as shown in Figure 5, the electrical characteristic detector of liquid beverage also comprises main body cover 5, tin hat 6, battery case 7.Signal processing analysis unit 2, power circuit 4 to be arranged in described main body cover 5, and LCD display 302 is positioned on main body cover.Key-press module 303 is positioned at the top of main body cover 5, and signal loading and collecting unit 1 are positioned at the tail end of main body cover 5 and expose shell.The tail end that tin hat 6 is fastened on main body cover 5 loads with collecting unit 1 for blanket and can open and exposes signal loading and collecting unit 1.
The detector of the present embodiment to be arranged in described main body cover 5 due to signal processing analysis unit 2, power circuit 4, and LCD display 302 is positioned on main body cover and is easy to carry, and facilitates in daily life and uses at any time.
As shown in Figure 6, for red wine, the idiographic flow adopting the electrical characteristic detector of liquid beverage of the present invention to detect red wine sample electrical characteristics is:
1, red wine is taken a morsel in cup.
2, press the button 303 of LED, when LCD display 302 shows " just in initialization ", show that detector is resetting and power on.When LCD display 302 shows " start measure ", the electrode part of this device just can fully contact with red wine sample to be measured by user, and again pushes button and 303 to detect.
Now, the current excitation signal of driving source module 21 meeting output waveform, amplitude, phase-adjustable, loading electrod-array 11 by the pumping signal of signal loading and collecting unit 1 is loaded in red wine sample, response signal acquisition electrode array 12 in signal loading and collecting unit 1 can gather the response signal of red wine sample, and is transferred to signal processing analysis unit 2.This response signal first can through amplification filtering module 22, and the response signal be exaggerated is converted to digital signal through analog-to-digital conversion module 23 and enters signal processing module 24 again to be analyzed.Signal processing module 24 can calculate the electrical characteristic parameter of tested red wine sample by certain algorithm to the response signal collected, comprise impedance, admittance, specific inductive capacity etc., the high-quality red wine electrical characteristic parameter distribution situation obtained in this, as basis for estimation and great many of experiments carries out contrasting the quality status judging tested red wine.
3, the electrical characteristic parameter of red wine sample is sent to memory module 25 and stores by signal processing module 24, and analyzes the quality of sample red wine.In analytic process, detector can judge current whether networking, namely whether Wireless communication interface module 301 is in running order, if Wireless communication interface module 301 is in running order, then the database data of detector meeting prioritizing selection cloud server is analyzed, namely by Wireless communication interface module 301, the electrical characteristic data of the red wine of the database purchase of cloud server is sent to signal processing module 24, the electrical characteristic parameter of red wine sample and the electrical characteristic data of red wine are compared analysis by signal processing module 24, and analysis result is sent to LCD display, if Wireless communication interface module 301 does not have in running order, then signal processing module 24 receives the electrical characteristic data of local red wine that memory module 25 stores and the electrical characteristic parameter of red wine sample is analyzed, and analysis result is sent to LCD display.
4, when LCD display 302 shows " detection completes ", then detector completes this testing process, analysis result is shown by LCD display 302, inform user's testing result, be stored in memory module 25 simultaneously, also can be transferred to intelligent terminal by Wireless communication interface module 301 and check testing result for user.Can preserve this testing result in memory module 25, user also can not timing and cloud database upgrade, and increases the accuracy detected.
Above content is in conjunction with concrete embodiment further description made for the present invention, can not assert that specific embodiment of the invention is confined to these explanations.For general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, some simple deduction or replace can also be made.
Claims (10)
1. an electrical characteristic detector for liquid beverage, is characterized in that, comprising: signal loading and collecting unit, signal processing analysis unit and power circuit;
Described signal loading is electrically connected with described signal processing analysis unit with collecting unit; Described signal processing analysis unit sends pumping signal to described signal loading and collecting unit; Described signal loading and collecting unit are for receiving described pumping signal and pumping signal being sent in liquid beverage sample, and described response signal is also sent to described signal processing analysis unit by the response signal of collection liquid drink sample under this pumping signal effect;
Described signal processing analysis unit for receiving described response signal, and carries out according to described response signal the electrical characteristic parameter that analyzing and processing obtains liquid beverage sample;
Described power circuit is connected with collecting unit and signal processing analysis unit with described signal loading respectively, for providing electric energy for described signal loading and collecting unit and signal processing analysis unit.
2. the electrical characteristic detector of liquid beverage as claimed in claim 1, it is characterized in that, described signal loading and collecting unit comprise pumping signal and load electrod-array and response signal acquisition electrode array;
Described pumping signal loads electrod-array and is electrically connected with described signal processing analysis unit, for receiving pumping signal and being sent in liquid beverage sample by described pumping signal;
Described response signal is also sent to described signal processing analysis unit by the response signal of described response signal acquisition electrode array acquisition liquid beverage sample under this pumping signal effect.
3. the electrical characteristic detector of liquid beverage as claimed in claim 2, it is characterized in that, described pumping signal loads electrod-array and is at least two, and the pumping signal described at least two loads electrod-array and lays respectively at around described response signal acquisition electrode array; Described response signal acquisition electrode array is arranged in the matrix form by multiple electrode and forms.
4. the electrical characteristic detector of liquid beverage as claimed in claim 1, it is characterized in that, described signal processing analysis unit comprises driving source module, analog-to-digital conversion module and signal processing module;
Described driving source module and described pumping signal load electrod-array and are connected, and be sent to described pumping signal load electrod-array for generation of pumping signal and by pumping signal;
Described analog-to-digital conversion module is connected with described signal processing module, for receiving response signal, described response signal being converted to digital signal and being sent to signal processing module;
Described signal processing module, for receiving digital signal, carries out to digital signal the electrical characteristic parameter that analyzing and processing obtains liquid beverage sample.
5. the electrical characteristic detector of liquid beverage as claimed in claim 4, it is characterized in that, described signal processing analysis unit also comprises amplification filtering module, memory module, clock module and temperature compensation module;
Described amplification filtering module is connected with described response signal acquisition electrode array and analog-to-digital conversion module respectively, is sent to described analog-to-digital conversion module after carrying out amplification filtering;
Described memory module is connected with described signal processing module, for the electrical characteristic parameter of storage of liquids drink sample;
Described clock module is connected with driving source module, amplification filtering module, analog-to-digital conversion module, signal processing module and memory module respectively, for described driving source module, amplification filtering module, analog-to-digital conversion module, signal processing module and memory module provide clock signal;
Described temperature compensation module is connected with described signal processing module, for tracer liquid drink sample temperature and described temperature is sent to signal processing module; Described signal processing module is revised according to the electrical characteristic parameter of described temperature to liquid beverage sample.
6. the electrical characteristic detector of liquid beverage as claimed in claim 1, it is characterized in that, described detector also comprises interactive unit; Described interactive unit comprises Wireless communication interface module, LCD display and key-press module;
Described Wireless communication interface module is connected with described memory module and signal processing module respectively, be sent to memory module for the just data of cloud database to carry out storing or the data of cloud database being sent to signal processing module, and the electrical characteristic parameter of liquid beverage sample is sent to cloud database;
Described LCD display is connected with described signal processing module, for showing the analysis result of operation instruction and food quality;
Described key-press module comprises the button controlling detector and open and close.
7. the electrical characteristic detector of liquid beverage as claimed in claim 6, it is characterized in that, described signal processing module reads the electrical characteristic parameter of the liquid beverage of memory module, and the electrical characteristic parameter of itself and liquid beverage sample is analyzed, the result of analysis is sent to LCD display display.
8. the electrical characteristic detector of liquid beverage as claimed in claim 6, it is characterized in that, described signal processing module receives the electrical characteristic parameter of the liquid beverage that cloud database stores by Wireless communication interface module, the electrical characteristic parameter of itself and liquid beverage sample is analyzed, and the result of analysis is sent to LCD display display.
9. the electrical characteristic detector of liquid beverage as claimed in claim 1, it is characterized in that, described power circuit comprises power consumption control module and battery, and described power consumption control module is for controlling detector cut-out power supply to each unit automatically after it quits work certain hour.
10. the electrical characteristic detector of the liquid beverage according to any one of claim 6 to 8, is characterized in that, described detector also comprises main body cover and tin hat;
Described signal processing analysis unit, power circuit are arranged in described main body cover, and described LCD display is positioned on main body cover; Described key-press module is positioned at the top of described main body cover, and described signal loading and collecting unit are positioned at the tail end of described main body cover and expose shell; The tail end that described tin hat is fastened on main body cover exposes signal loading and collecting unit for hiding described signal loading and collecting unit and can opening.
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| CN110702807B (en) * | 2019-09-10 | 2022-04-19 | 国网浙江省电力有限公司电力科学研究院 | FID micro-current amplifier capable of realizing automatic calibration and calibration method thereof |
| CN110954577A (en) * | 2019-12-18 | 2020-04-03 | 兰州大学 | Rapid nondestructive injection quality detection system and detection method |
| CN110954577B (en) * | 2019-12-18 | 2023-08-18 | 兰州大学 | Rapid nondestructive injection quality detection system and detection method |
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