Rapid thermometric indicator of cigarette packages
Technical field
The present invention relates to a kind of tobacco bale quality detection device, especially relate to a kind of rapid thermometric indicator of cigarette packages.
Background technology
At present, Cigarette Industrial Enterprise is raw material mainly with sheet cigarette greatly, and tobacco leaf, after redrying, need can use through the alcoholization phase of 2 years.In tobacco leaf storage process, refine excessive velocities and will cause carbonization, make tobacco leaf lose use value completely, industrial enterprise and redrying enterprise are suffered huge economic loss.The condition of tobacco leaf carbonization is: 35 DEG C of sheet cigarette temperature >, moisture > 15% and maintenance certain hour.For tobacco bale carbonization phenomenon during discovery alcoholization in time, need to monitor cored temperature, therefore YC/T 300-2009 " sheet cigarette storage maintenance current techique requires " regulation: sheet cigarette warehouse-in need to be tested to cored temperature, requires 35 DEG C of cored temperature <.At present, all temperature measuring equipments all cannot go deep into tobacco bale center and carry out temperature detection, therefore design a instrument that can quick and precisely measure cored temperature, the requirement detecting to meet sheet cigarette warehouse-in.
Summary of the invention
In order to solve above-mentioned technical matters, the object of the invention is to propose a kind of rapid thermometric indicator of cigarette packages, quick and precisely measure cored temperature, the requirement detecting to meet sheet cigarette warehouse-in.
In order to realize above-mentioned object, the present invention has adopted following technical scheme:
Rapid thermometric indicator of cigarette packages, this temperature measurer comprises counterweight housing, contact pin, temperature sensor, liquid crystal display and telemetry circuit; Counterweight housing comprises metal shell, seal cover board and stressed cover plate, seal cover board is arranged on the front end of metal shell, be fixed by screws on metal shell, described stressed cover plate is arranged on the rear end of metal shell, stressed cover plate is provided with and shows that mouth, the rear end of stressed cover plate are provided with the plastic plate sealing demonstration mouthful with transparent window; Seal cover board middle part is provided with through hole, and the front portion of contact pin is solid cone, and rear portion is hollow body, in hollow body, fills and is provided with Heat Conduction Material, and the rearward end of hollow body is arranged in described through hole by welding; Described telemetry circuit is arranged in the inner chamber of metal shell, temperature sensor is arranged on hollow body near solid pyramidal position, the connecting line of temperature sensor is connected to telemetry circuit through hollow body, described liquid crystal display is just to showing a mouthful setting, and liquid crystal display is also connected on telemetry circuit.
As further improvement, above-mentioned metal shell and the connecting portion of seal cover board are provided with respectively ring groove, are provided with O RunddichtringO in ring groove.O RunddichtringO can guarantee that enclosure interior no-sundries enters.
As further improvement, above-mentioned solid cone and hollow body all adopt 314L stainless steel material, and solid cone and hollow body adopt laser seamless welding.
As further improvement, above-mentioned temperature sensor adopts the T-shaped NTC senser element of import high-precision A.AT type NTC senser element has response speed and the linear work region up to-40 DEG C to+125 DEG C fast.
As further improvement, above-mentioned Heat Conduction Material adopts heat conductive silica gel.It is good that heat conductive silica gel has filling capacity, the feature that heat transfer efficiency is high.
As further improvement, above-mentioned plastic plate adopts acrylic material.It is high that acrylic material has transparency, the feature that intensity is good.
As further improvement, the inner ring of above-mentioned metal shell is provided with three connecting portions, on three connecting portions, is respectively equipped with screw thread mouth, and described screw is connected to screw thread mouth.
As further improvement, above-mentioned telemetry circuit comprises temperature sensor circuit, microcontroller circuit, feed circuit and machine open/close button, temperature sensor circuit one end is connected with the connecting line of described temperature sensor, the other end is connected with microcontroller circuit, described microcontroller circuit adopts single-chip microcomputer, drives the described real-time displays temperature reading of liquid crystal display by the LCD driving circuit of core Embedded.As preferably, this telemetry circuit also comprises clock signal circuit, battery low-voltage testing circuit, micro-handling procedure programming mouth and micro-processing communication port, and clock signal circuit connects microcontroller circuit provides clock signal accurately for microprocessor; Battery low-voltage testing circuit is applied the voltage status of micro-processing internal comparator Function detection feed circuit, and in the time that battery electric quantity is not enough, LCD will show low electricity prompting icon; Micro-handling procedure programming mouth is upgraded to firmware program in micro-processing; Micro-processing communication port is read the current temperature data measuring.As preferably, above-mentioned temperature sensor circuit adopts 555 circuit, and single-chip microcomputer adopts 16 super low power consuming single chip processor MSP430F413 of TI company.
The present invention is owing to having adopted above-mentioned technical scheme, adopt the structure of contact pin and counterweight housing to be convenient to contact pin quick insertion tobacco bale, in hollow body, fill and be provided with Heat Conduction Material, realize heat conduction fast, can allow temperature sensor obtain fast the temperature of tobacco bale, realize cored temperature and quick and precisely measured, met the requirement that sheet cigarette warehouse-in detects.
Brief description of the drawings
Fig. 1 is structural representation of the present invention.
Fig. 2 is the structural representation of metal shell.
Fig. 3 is the upward view of Fig. 2.
Fig. 4 is the structural representation of contact pin and seal cover board.
Fig. 5 is the electrical block diagram of telemetry circuit.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is made a detailed explanation.
Rapid thermometric indicator of cigarette packages as shown in Figure 1, this temperature measurer comprises counterweight housing, contact pin, temperature sensor 10, liquid crystal display 3 and telemetry circuit 4.As shown in Figure 2, counterweight housing comprises metal shell 2, seal cover board 6 and stressed cover plate 5, and seal cover board 6 is arranged on the front end of metal shell 2, is fixed on metal shell 2 by screw 12, and seal cover board 6 middle parts are provided with through hole 18.As shown in Figure 3, the inner ring of metal shell 2 is provided with three connecting portions 14, on three connecting portions 14, be respectively equipped with screw thread mouth 15, described screw 12 is connected in screw thread mouth 15, the connecting portion of metal shell 2 and seal cover board 6 is provided with respectively ring groove 13,16, in ring groove 13,16, be provided with O RunddichtringO 7, O RunddichtringO 7 can guarantee that enclosure interior no-sundries enters.As shown in Figure 1, described stressed cover plate 5 is arranged on the rear end of metal shell 2, stressed cover plate 5 welding are arranged on metal shell 2, or one-body molded with metal shell 2, stressed cover plate 5 is provided with and shows mouth 19, the rear end of stressed cover plate 5 is provided with plastic plate 1 sealing and shows mouth 19, and plastic plate 1 adopts acrylic material.
As shown in Figure 4, the front portion of contact pin is solid cone 9, and rear portion is hollow body 8, and solid cone 9 and hollow body 8 all adopt 314L stainless steel material, and solid cone 9 adopts laser seamless welding with hollow body 8.The interior filling of hollow body 8 is provided with Heat Conduction Material 11, and Heat Conduction Material 11 adopts heat conductive silica gel.The rearward end of hollow body 8 is arranged in described through hole 18 by welding; Described telemetry circuit 4 is arranged in the inner chamber of metal shell 2, and temperature sensor 10 adopts the T-shaped NTC senser element of import high-precision A.AT type NTC senser element has response speed and the linear work region up to-40 DEG C to+125 DEG C fast.Temperature sensor 10 is arranged on the position of hollow body 8 near solid cone 9, the connecting line 17 of temperature sensor 10 is connected to telemetry circuit 4 through hollow body 8, described liquid crystal display 3 is just to showing a mouthful setting, and liquid crystal display 3 is also connected on telemetry circuit 4.
As shown in Figure 5, telemetry circuit 4 comprises temperature sensor circuit, microcontroller circuit, feed circuit, machine open/close button (SW1), clock signal circuit, battery low-voltage testing circuit, micro-handling procedure programming mouth and micro-processing communication port, temperature sensor circuit adopts 555 circuit (U1), temperature sensor circuit one end is connected with the connecting line 17 of described temperature sensor 10, the other end is connected with microcontroller circuit, described microcontroller circuit adopts single-chip microcomputer, single-chip microcomputer adopts 16 super low power consuming single chip processor MSP430F413(U2 of TI company), LCD driving circuit by core Embedded drives the described real-time displays temperature reading of liquid crystal display 3.Feed circuit adopt one piece of CR123 battery (BAT1) that 3V power supply is provided, and owing to having adopted super low-power consumption circuit design, one piece of sustainable work of battery reaches one-year age.Clock signal circuit adopts 32.768KHz quartz (controlled) oscillator (Y1), and clock signal circuit connects microcontroller circuit provides clock signal accurately for microprocessor; Battery low-voltage testing circuit, by a small amount of peripheral cell (D2, R9 ~ R11), is applied micro-processing internal comparator Function detection cell voltage state; In the time that battery electric quantity is not enough, LCD will show low electricity prompting icon; Micro-handling procedure programming mouth (J3) is upgraded to firmware program in micro-processing; Micro-processing communication port (J4) is read the current temperature data measuring.
The parameter specification of product of the present invention is as follows:
A) measurement range :-20.0 DEG C ~+70.0 DEG C
B) measuring accuracy: ± 0.5 DEG C
C) readout resolutions: 0.1 DEG C
D) measure response speed: 1S
E) battery: CR123 x 1 (3V)
F) show: digital code LCD
G) power consumption: duty: < 500uA@3V off-mode: < 0.7uA@3V
H) low electric alarm voltage: 2.7V +/-0.1V
I) ESD protection: 45KV HBD
Storing temperature :-60 DEG C ~+90 DEG C.
test example
Experimental program: rapid thermometric indicator of cigarette packages is placed under room temperature environment, room temperature is about 22 DEG C.Water bath with thermostatic control is set to respectively to 35 DEG C, 40 DEG C, 45 DEG C, 50 DEG C, 55 DEG C, 60 DEG C, after water temperature stability, thermometric bar is put into required time when recording thermometric bar and reach temperature with stopwatch.
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