CN104330163B - Novel steel rail thermo detector - Google Patents
Novel steel rail thermo detector Download PDFInfo
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- CN104330163B CN104330163B CN201410624485.1A CN201410624485A CN104330163B CN 104330163 B CN104330163 B CN 104330163B CN 201410624485 A CN201410624485 A CN 201410624485A CN 104330163 B CN104330163 B CN 104330163B
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- circuit board
- thermo detector
- steel rail
- novel steel
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Abstract
The invention discloses a kind of novel steel rail thermo detector, including the handheld device end and temperature survey end connected by communication cable；Handheld device end includes OLDE display screens, thin-film key panel, the supplying cell being arranged in an electronics storehouse box, supplying cell is fixed on inside the box of electronics storehouse powers for OLDE display screens and microcontroller electronic circuit board, microcontroller electronic circuit board receives the input signal of thin-film key panel, control electronic display screen displays, and is connected by communication cable with temperature survey end communication；Temperature survey end includes being set with the metal shell formed, nested annular magnet between the inner hull and the outer hull, the circuit board being fixed on inner housing with inner housing by shell body and welds on circuit boards and closed towards the infrared thermometer of metal shell openend, metal shell openend by heat conduction silver strip.The novel steel rail thermo detector light structure of the present invention is firm, and easy to operate, protective is good, and precision is high, thermometric fast response time.
Description
Technical field
The present invention relates to a kind of novel steel rail thermo detector, belong to field of circuit technology.
Background technology
Rail thermo detector is the special test equipment that Rail Surface temperature is measured on railway.The either laying construction of circuit
And maintenance, still switch tracks operation, and " three proofings " of works department（Prevent swollen, anti-breaking, sunstroke prevention）All must be with rail temperature
For Main Basiss.With the high speed development of modernized railway, the requirement to circuit is also higher and higher.Therefore, for rail thermometric
The accuracy of meter and the requirement of stability etc., also correspondingly there is the standard of higher.
The rail thermo detector used on the line at present, there is dual metal type rail thermo detector and analog signal figure formula rail
Two kinds of thermo detector, and analog signal figure formula rail thermo detector because of it with fast response time, reading is directly perceived and antijamming capability
It is the advantages that strong, most widely used.
Currently, analog signal figure formula rail thermo detector generally use DS18B20 temperature sensors sample temperature,
The display of sensor and temperature data is controlled by microcontroller and peripheral circuit.Since temperature sensor is solidificated in metal-back
Within body, tested heat balance time is usually in more than 120s, test fee between Rail Surface and temperature sensor, testing efficiency
Lowly.
The content of the invention
According to the deficiencies of the prior art described above, It is an object of the present invention to provide a kind of novel steel rail thermo detector, shortens
Tested heat balance time between Rail Surface and temperature sensor, measurement is time-consuming under the conditions of solving the problems, such as high precision measuring temperature.
The present invention seeks to be completed by following technical scheme：
A kind of novel steel rail thermo detector, it is characterized in that, including handheld device end and temperature survey end two parts composition, the two
Between connected by communication cable；
The handheld device end includes being arranged on OLED display screen in an electronics storehouse box, thin-film key panel, power supply
Battery, wherein the OLED display screen and thin-film key panel is fixed on electronics storehouse box inner surface, supplying cell is fixed on electricity
Power inside sub- storehouse box for OLED display screen and microcontroller electronic circuit board, microcontroller electronic circuit board receives thin-film key panel
Input signal, control electronic display screen displays, and be connected by communication cable with temperature survey end communication；
Temperature survey end includes being set with the metal shell formed by shell body and inner housing, is nested in inner housing and shell body
Between annular magnet, the circuit board that is fixed on inner housing and welding on circuit boards and towards metal shell openend
Infrared thermometer, metal shell openend is closed by heat conduction silver strip.
The heat insulating washer of the annular of clamping one, the annular space of heat insulating washer between inner housing, annular magnet and heat conduction silver strip
Formed and penetrated through with inner housing, made infrared thermometer and heat conduction silver strip is separated by a distance is oppositely arranged.
The infrared receiver of infrared thermometer is facing to heat conduction silver strip.
The temperature value that infrared thermometer measures is transferred to the microcontroller in handheld device end by circuit board through communication cable
Electronic circuit board carries out signal processing.
The inner housing is a hollow sleeve, and a step for being used for mounting circuit boards is set on inner wall, is pacified on circuit board
The infrared thermometer of dress is contained in the hollow space of sleeve.
The handheld device end thin-film key panel is equipped with start, shutdown, wherein three buttons of backlight, backlight key
For controlling lighting for OLED display screen backlight.The closing of OLED display screen backlight can be controlled by backlight key, can also be
Realized by program in microcontroller electronic circuit board and be automatically closed after lighting after a delay time.
Sealing protection is realized in the temperature survey end by shell body and heat conduction silver strip, and heat conduction silver strip is pasted with Rail Surface
Close, reach thermal balance by contacting heat transfer between rail temperature and heat conduction silver strip, infrared thermometer directly measures heat conduction silver strip
Temperature reflect the temperature of Rail Surface.
The temperature survey end is adsorbed in Rail Surface by annular magnet, realizes the tight of heat conduction silver strip and Rail Surface
Closely connected conjunction.There is a heat insulating washer between heat conduction silver strip and annular magnet and inner housing, reduce test measurement end to Rail Surface office
The influence of portion's temperature, and realize the quick thermal balance of heat conduction silver strip and Rail Surface.
The beneficial effect that the present invention is reached：
The present invention is made of handheld device end and temperature survey end two parts, and handheld device end possesses start, shutdown and the back of the body
Light presentation control function, and measured temperature value is subjected to real-time display；Temperature survey end is sensed by high-precision infrared temperature
Device carries out temperature sensing, and carries out sealing protection by heat conduction silver strip so that this novel steel rail thermo detector light structure is firm, operation
The advantages that convenient, protective is good, and precision is high, thermometric fast response time.
The present invention has following advantages compared with prior art：
1st, the present invention realizes that infrared thermometer connects with the non-of heat conduction silver strip by the use of infrared thermometer as temperature acquisition element
Touch property thermometric, fast response time.
2nd, the present invention carries out encapsulation process using heat conduction silver strip to infrared thermometer temperature surface, and water proof and dust proof, prevents infrared
Ambient windstream changes introduced measurement interference.
3rd, the present invention measures the temperature of rail indirectly by measuring the temperature of heat conduction silver strip, and used heat conduction silver strip is thick
Spend thin, greatly shorten the heat balance time between heat conduction silver strip and rail, improve the response speed of temperature survey.
4th, there is a heat insulating washer between heat conduction silver strip and annular magnet and inner housing of the present invention, reduce test measurement end to steel
The influence of track surface local temperature, and reduce the heat balance time of heat conduction silver strip and Rail Surface.
5th, traditional cylindrical magnetic iron is replaced by using annular magnet in the heat conduction silver strip face of infrared thermometer of the present invention, increased
The suction of strong magnet, so that the adsorption capacity between heat conduction silver strip and rail is stronger, temperature surface is more closely connected, thermal field evenly, thermometric
It is rapider, more accurate.
Brief description of the drawings
Fig. 1 is novel steel rail thermo detector pictorial diagram.
Fig. 2 is temperature survey end internal structure schematic diagram.
Fig. 3 is adsorbed in Rail Surface schematic diagram for temperature survey end.
Fig. 4 is novel steel rail thermo detector fundamental diagram.
Fig. 5 is novel steel rail thermo detector precision and temperature range relation.
Fig. 6 is novel steel rail thermo detector main control unit circuit diagram.
Fig. 7 is novel steel rail thermo detector power supply control principle drawing.
Fig. 8 is novel steel rail thermo detector performance indicator.
In figure, handheld device end 1, temperature survey end 2, communication cable 3, starting key 4, shutdown button 5, backlight key 6,
OLED display screen 7, circuit board 8, inner housing 9, annular magnet 10, heat insulating washer 11, heat conduction silver strip 12, shell body 13, infrared temperature
Degree meter 14, rail 15.
Embodiment
The invention will be further described below in conjunction with the accompanying drawings.Following embodiments are only used for clearly illustrating the present invention
Technical solution, and be not intended to limit the protection scope of the present invention and limit the scope of the invention.
As shown in Figure 1, handheld device end 1 and temperature survey end 2 form the utility model rail thermo detector by communication cable 3.
Handheld device end 1 realizes the start and shutdown of equipment by starting key 4 and shutdown button 5, and institute is shown by OLED display screen 7
Thermometric angle value, presses backlight key 6, and OLED display screen backlight is bright.
As shown in Fig. 2, the infrared thermometer 14 at temperature survey end is welded on circuit board 8, inner housing 9 is then fixed on again
Interior step on, facing to heat conduction silver strip 12, the temperature value measured passes through and the electricity of circuit board 8 infrared receiver of infrared thermometer 14
The microcontroller that the communication cable 3 of connection is transferred in handheld device end 1 carries out signal processing and display, heat conduction silver strip 12 and inner casing
There is the heat insulating washer 11 of annular between body 9 and annular magnet 10, completely cut off the thermal loss of heat conduction silver strip 12, annular magnet 10 is embedding
It is sleeved between inner housing 9 and shell body 13, for temperature survey end 2 to be adsorbed in rail surface.
The present invention opens rail thermo detector in use, press the starting key 4 at handheld device end 1.During test, such as Fig. 3 institutes
Show, the dirts such as the iron rust on 15 surface of rail to be measured are removed first, the one side of heat conduction silver strip 12 on temperature survey end 2 is adjacent to steel
The OLED display screen 7 on 15 surface of rail, treated on handheld device end 1 is adsorbed in 15 surface of rail, temperature survey end 2 by annular magnet 10
The temperature value stabilization of display, you can measure the temperature of rail 15.During the test, press backlight on handheld device end 1 by
Key 6, OLED display screen backlight is bright, and backlight is automatically closed after 15s.Test terminates, and presses the shutdown button at handheld device end 1
5, rail thermo detector is closed.
In the present embodiment, hardware circuit operation principle block diagram as shown in figure 4, lithium battery be whole measuring system power supply, warp
After power module carries out voltage transformation, respectively to infrared thermometer, microcontroller, OLED display module power supply, power supply control mould
Block is used for the break-make for controlling power module to power.
In the present embodiment, infrared thermometer 14 uses Non-contact Infrared Temperature Measurement device MLX90614, it is internal using low
Noise amplifier, 17 A/D converters and powerful DSP processing units, have higher temperature resolution and measurement essence
Degree, has two kinds of communication modes of SMBUS and PWM.The temperature-measuring range of MLX90614 is -40 DEG C~+125 DEG C, and temperature resolution is
0.02 DEG C, in room temperature scope, the absolute precision of measurement is ± 0.2 DEG C, is had in the range of -40 DEG C~+70 DEG C ± 1 DEG C maximum
Absolute precision, and be typically not greater than 20 degree in view of temperature difference between actual application environment and rail, when using heat conduction silver
After piece 12 is as sealing and temperature sensor structure, temperature measurement accuracy can more be stablized, less than ± 0.5 DEG C, such as a-quadrant in attached drawing 5.
The measurement accuracy of Non-contact Infrared Temperature Measurement device MLX90614 directly determines the temperature measurement accuracy of whole system, completely may be used
To meet the parameter request for thermometric as shown in Figure 8 in this programme.
In the present embodiment, heat conduction silver strip 12 uses 0.5mm thickness silver strips, ensures the intensity and heat conduction rapidity of heat conduction silver strip；
, as control unit, using OLED display screen, designed using water proof and dust proof using C8051F410 microcontrollers, be in handheld device end
System power consumption is less than 20mA.
The present embodiment in the specific implementation, using lithium battery power supply.Lithium battery has that capacity is big, memory-less effect, sexual valence
Than it is high the features such as, therefore, select lithium battery in this example, and be equipped with one piece of lithium battery and replace, single lithium battery is
1900mAh3.7V, the stream time in actual use of rail thermo detector up to 60 it is small when more than, as shown in Figure 8.
Hardware circuit design uses mature technology scheme, and 6 and 7 pairs of hardware circuits are briefly described below in conjunction with the accompanying drawings.It is single
Piece machine N1, as control unit, is controlled the data of OLED display screen to show, passes through serial communication interface CON2 using C8051F410
The measurement test value signal of infrared thermometer input is read, the programming to SCM program is realized by P1 interfaces.Button S1 is
Backlight key 6, S2 are starting key 4, and S3 is shutdown button 5.When pressing backlight key S1, Light signals become from high level
For low level, microcontroller N1 detects that level signal changes, and control OLED display screen backlight is bright.Diode VD1 in attached drawing 7,
Diode VD2, triode V3, triode V4, resistance R20, R21, R23, R25, S2, S3, voltage-stabiliser tube V5, lithium battery BT1 are common
Constitute switching on and shutting down control circuit；V1 is electric pressure converter, for subsequent conditioning circuit work provides stabilization operating voltage, capacitance C2 with
C6 is denoising acoustic capacitance.
The above embodiments merely illustrate the technical concept and features of the present invention, and its object is to allow person skilled in the art
Scholar can understand present disclosure and implement according to this, and it is not intended to limit the scope of the present invention.It is all according to the present invention
The equivalent change or modification that Spirit Essence is made, should be covered by the protection scope of the present invention.
Claims (5)
1. a kind of novel steel rail thermo detector, it is characterized in that, including handheld device end and temperature survey end two parts composition, the two it
Between connected by communication cable；
The handheld device end includes being arranged on OLED display screen in an electronics storehouse box, thin-film key panel, supplying cell,
The wherein described OLED display screen and thin-film key panel is fixed on electronics storehouse box inner surface, and supplying cell is fixed on electronics storehouse box
Inside powers for OLED display screen and microcontroller electronic circuit board, and microcontroller electronic circuit board receives the input of thin-film key panel
Signal, control electronic display screen displays, and be connected by communication cable with temperature survey end communication；
Temperature survey end include by shell body be set with inner housing the metal shell formed, it is nested between the inner hull and the outer hull
Annular magnet, the circuit board that is fixed on inner housing and welding on circuit boards and towards the red of metal shell openend
Outer thermometer, metal shell openend are closed by heat conduction silver strip；
Between inner housing, annular magnet and heat conduction silver strip clamping one annular heat insulating washer, the annular space of heat insulating washer with it is interior
Housing forms perforation, makes infrared thermometer and heat conduction silver strip is separated by a distance is oppositely arranged.
2. novel steel rail thermo detector according to claim 1, it is characterized in that, the infrared receiver of infrared thermometer faces guide
Hot silver strip.
3. novel steel rail thermo detector according to claim 1, it is characterized in that, the temperature value that infrared thermometer measures passes through electricity
The microcontroller electronic circuit board that road plate is transferred to through communication cable in handheld device end carries out signal processing.
4. novel steel rail thermo detector according to claim 1, it is characterized in that, the inner housing is a hollow sleeve, interior
One step for being used for mounting circuit boards is set on wall, and the infrared thermometer installed on circuit board is contained in the hollow space of sleeve
It is interior.
5. novel steel rail thermo detector according to claim 1, it is characterized in that, the handheld device end thin-film key panel
Three start, shutdown, backlight buttons are equipped with, wherein backlight key is used to control lighting for OLED display screen backlight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410624485.1A CN104330163B (en) | 2014-11-07 | 2014-11-07 | Novel steel rail thermo detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410624485.1A CN104330163B (en) | 2014-11-07 | 2014-11-07 | Novel steel rail thermo detector |
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| Publication Number | Publication Date |
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| CN104330163A CN104330163A (en) | 2015-02-04 |
| CN104330163B true CN104330163B (en) | 2018-05-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410624485.1A Active CN104330163B (en) | 2014-11-07 | 2014-11-07 | Novel steel rail thermo detector |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112345095B (en) * | 2020-11-16 | 2023-05-26 | 山西世恒铁路技术有限公司 | Portable steel rail thermometer and temperature measuring system thereof |
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| US20090168835A1 (en) * | 2007-12-28 | 2009-07-02 | Thomas Heinke | Portable IR Thermometer Having USB-HID Interface |
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| CN2762087Y (en) * | 2004-11-05 | 2006-03-01 | 黄强 | Heat insulation packed temperature measuring probe |
| CN1979579A (en) * | 2005-11-29 | 2007-06-13 | 力晶半导体股份有限公司 | Wireless rail detection system |
| CN101402370A (en) * | 2008-11-11 | 2009-04-08 | 天津安铁科技发展有限公司 | Intelligent rail temperature alarm device |
| CN201527311U (en) * | 2009-10-23 | 2010-07-14 | 涟钢振兴电气设备有限公司 | Quick temperature measuring thermocouple |
| CN201772940U (en) * | 2010-06-25 | 2011-03-23 | 西安铁路信号工厂 | Steel rail temperature sensor |
| EP2584329A1 (en) * | 2011-10-17 | 2013-04-24 | Progress Rail Services Corporation | Device for testing a sensor of train undercarriage temperatures |
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| US20090168835A1 (en) * | 2007-12-28 | 2009-07-02 | Thomas Heinke | Portable IR Thermometer Having USB-HID Interface |
| CN201561812U (en) * | 2009-12-18 | 2010-08-25 | 上海铁路局 | Track temperature measuring instrument |
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Effective date of registration: 20180813 Address after: 233030 2016 Tang He road, Bengbu, Anhui Patentee after: Huadong Photoelectric Integrated Device Research Institute Address before: 215163 No. 89 Longshan Road, hi tech Zone, Suzhou, Jiangsu Patentee before: China North Industries Group Corporation No.214 Research Institute Suzhou R&D Center |
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