CN201772940U - Steel rail temperature sensor - Google Patents
Steel rail temperature sensor Download PDFInfo
- Publication number
- CN201772940U CN201772940U CN2010202389717U CN201020238971U CN201772940U CN 201772940 U CN201772940 U CN 201772940U CN 2010202389717 U CN2010202389717 U CN 2010202389717U CN 201020238971 U CN201020238971 U CN 201020238971U CN 201772940 U CN201772940 U CN 201772940U
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- temperature sensor
- temperature
- detecting unit
- rail
- output end
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Abstract
The utility model belongs to a temperature sensor applicable to a railway switch snow melting system, and discloses a steel rail temperature sensor for detecting the temperature change of steel rail, which is characterized in that a temperature detection unit (5) is fixed in a cuboid casing (3) 80mm in length, 25mm in width and 25mm in thickness through a bolt (6); the temperature detection unit (5) comprises a first temperature sensor (8) and a second temperature sensor (9); the temperature detection unit (5) is sealed in the casing (3) through silicone rubber (4), and is fixed by a baseplate (7); a waterproof connector (2) is fixed with one end of the casing (3); and a conducting wire (1) is electrically connected with the temperature detection unit (5) through the waterproof connector (2). The steel rail temperature sensor has the advantages of high response speed and high measuring accuracy.
Description
Technical field
The utility model belongs to a kind of temperature sensor, particularly is applicable to the railway switch snow-melting system, is used to detect a kind of rail temperature sensor that rail temperature changes.
Background technology
Existing rail temperature sensor adopts thermopair, and thermopair is sealed in the copper pipe with glue, inserts in the protection brass bar again, utilize thermopair to be linear change and come detected temperatures with its resistance of variation of temperature, because thermopair detected temperatures and shell are not closely connected, response speed is slow, influences measuring accuracy.
The utility model content
It is fast that the purpose of this utility model provides a kind of response speed, the rail temperature sensor that measuring accuracy is high.
The purpose of this utility model is to realize like this, a kind of rail temperature sensor, it is characterized in that: pass through screw 6 fixed temperature detection unit 5 in for the rectangular parallelepiped housing 3 of long 80mm, wide 25mm, thick 25mm in profile, temperature detecting unit 5 includes first temperature sensor 8, second temperature sensor 9, temperature detecting unit 5 is sealed in the housing 3 by silicon rubber 4, and is fixing by base plate 7 again; Water joint 2 is fixed with housing 3 one ends, and lead 1 is electrically connected with temperature detecting unit 5 by water joint 2.
Described first temperature sensor 8, second temperature sensor 9 are DS18B20 temperature sensors.
Described housing 3 middle parts have the locating slot of wide 26mm, dark 3mm.
Transient state suppressing pipe VR1 is arranged between the positive and negative power supply of polarity switching, transient state suppressing pipe VR2 is arranged between data output end and cathode power supply, transient state suppressing pipe VR3 is arranged between data output end and negative power supply.
The utility model has the advantages that: it uses semiconductor temperature sensor, and printed circuit board is fixed by using, organosilicon heat-conducting glue and mono-hull hermetically-sealed construction, has guaranteed the closely connected and heat conduction of sensor and shell.The online redundancy detection rail temperature of temperature sensor has improved the reliability that rail temperature detects.Adopt measures such as polar switching, transient state suppressing, overload current limliting, stopped the field wiring mistake and damaged equipment, improved the antijamming capability of sensor.
The utility model is described in further detail below in conjunction with the embodiment accompanying drawing:
Description of drawings
Fig. 1 is the utility model structural representation;
Fig. 2 is the utility model circuit theory diagrams.
Among the figure, 1. lead; 2. water joint; 3. housing; 4. silicon rubber; 5. temperature detecting unit; 6. screw; 7. base plate; 8, first temperature sensor; 9, second temperature sensor.
Embodiment
As shown in Figure 1, in profile is the rectangular parallelepiped housing 3 of long 80mm, wide 25mm, thick 25mm, by screw 6 fixed temperature detection unit 5, temperature detecting unit 5 includes first temperature sensor 8, second temperature sensor 9, temperature detecting unit 5 is sealed in the housing 3 by silicon rubber 4, and is fixing by base plate 7.First temperature sensor 8, second temperature sensor 9 adopt the DS18B20 temperature sensor, the DS18B20 temperature sensor is the unibus digital data transmission, temperature-measuring range wide (55 ℃-+125 ℃), measuring accuracy height (± 0.5 ℃), wide power input (3.0V-5.5V), resolution height (9-12 position), test data conversion fast (200mS).Housing 3 and base plate 7 adopt brass material machining to make, with screw and the fastening printed circuit board of stage clip array mode, can guarantee that temperature-sensitive chip and shell are closely connected, fix that lead 1 is electrically connected with temperature detecting unit 5 by water joint 2 by water joint 2 and housing 3 one ends.With silicon rubber 4 temperature detecting unit 5 perfusions are sealed.
The locating slot that housing 3 middle parts have wide 26mm, dark 3mm blocks locating slot stationary positioned temperature detecting unit 5 with jig, and the circuit original paper of temperature detecting unit 5 is fixed on the printed circuit board of epoxy resin bonded fiber making, surface of contact coated with thermally conductive glue when fastening.
As shown in Figure 2, provide temperature detecting unit 5 circuit theory diagrams, temperature detecting unit 5 is the transmission of three-wire system signal, two power leads (VDD, GND) wherein, one data lines (DQ), two power leads reach polar switching through diode bridge rectifier circuit, that is to say that diode bridge rectifier circuit is actually polarity switching, and polarity switching prevents to damage because of power lead connects the anti-sensor that causes.Behind polarity switching, be electrically connected with power end 1,3 pins of first temperature sensor 8 and second temperature sensor 9, first temperature sensor 8 and second temperature sensor 9 adopt the DS18B20 temperature sensor, and the data output end of first temperature sensor 8 and second temperature sensor 9 is electrically connected the back as data output end.
Transient state suppressing pipe VR1 is arranged between the positive and negative power supply of polarity switching, transient state suppressing pipe VR2 is arranged between data output end and cathode power supply, transient state suppressing pipe VR3 is arranged between data output end and negative power supply.Adopt the overvoltage in the transient state suppressing pipe filtering external world and the measures such as working current that impact, employing serial connection current-limiting resistance are controlled test loop, strengthen the reliability and the serviceable life of rail temperature sensor with this.
The utility model uses the redundant rail temperature of gathering of two DS18B20, when reading with trace routine, data is differentiated processing.
Claims (5)
1. rail temperature sensor, it is characterized in that: pass through screw (6) fixed temperature detection unit (5) in for the rectangular parallelepiped housing (3) of long 80mm, wide 25mm, thick 25mm in profile, temperature detecting unit (5) includes first temperature sensor (8), second temperature sensor (9), temperature detecting unit (5) is sealed in the housing (3) by silicon rubber (4), and is fixing by base plate (7) again; Water joint (2) is fixed with housing (3) one ends, and lead (1) is electrically connected with temperature detecting unit (5) by water joint (2).
2. a kind of rail temperature sensor according to claim 1 is characterized in that: described first temperature sensor (8), second temperature sensor (9) are the DS18B20 temperature sensors.
3. a kind of rail temperature sensor according to claim 1 is characterized in that: described housing (3) middle part has the locating slot of wide 26mm, dark 3mm.
4. a kind of rail temperature sensor according to claim 1, it is characterized in that: described temperature detecting unit (5) is the transmission of three-wire system signal, wherein VDD, GND and a data lines DQ, the polarity switching that two power leads constitute by diode bridge rectifier circuit be electrically connected with power end 1,3 pins of first temperature sensor (8) and second temperature sensor (9), the data output end electrical connection of first temperature sensor (8) and second temperature sensor (9) is afterwards as data output end.
5. a kind of rail temperature sensor according to claim 4, it is characterized in that: transient state suppressing pipe VR1 is arranged between the positive and negative power supply of described polarity switching, transient state suppressing pipe VR2 is arranged between data output end and cathode power supply, transient state suppressing pipe VR3 is arranged between data output end and negative power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202389717U CN201772940U (en) | 2010-06-25 | 2010-06-25 | Steel rail temperature sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202389717U CN201772940U (en) | 2010-06-25 | 2010-06-25 | Steel rail temperature sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201772940U true CN201772940U (en) | 2011-03-23 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202389717U Expired - Lifetime CN201772940U (en) | 2010-06-25 | 2010-06-25 | Steel rail temperature sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201772940U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104330163A (en) * | 2014-11-07 | 2015-02-04 | 中国兵器工业集团第二一四研究所苏州研发中心 | Novel steel rail thermometer |
| CN104802825A (en) * | 2015-05-18 | 2015-07-29 | 南京华士电子科技有限公司 | Fuse relay for motor train unit |
| CN104964752A (en) * | 2015-06-29 | 2015-10-07 | 苏州工业园区驿力机车科技有限公司 | Temperature sensor applied to automotive engine cooling system and potting method of temperature sensor potting adhesive |
| CN106546358A (en) * | 2015-09-23 | 2017-03-29 | 深圳市易流科技股份有限公司 | A kind of temperature-sensing probe and vehicle electronics |
| CN109612597A (en) * | 2018-12-06 | 2019-04-12 | 株洲电力机车电机修造有限公司 | Redundancy-type temperature sensor |
| WO2021037253A1 (en) * | 2019-08-29 | 2021-03-04 | 杭州三花研究院有限公司 | Sensor and heat exchanger |
-
2010
- 2010-06-25 CN CN2010202389717U patent/CN201772940U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104330163A (en) * | 2014-11-07 | 2015-02-04 | 中国兵器工业集团第二一四研究所苏州研发中心 | Novel steel rail thermometer |
| CN104802825A (en) * | 2015-05-18 | 2015-07-29 | 南京华士电子科技有限公司 | Fuse relay for motor train unit |
| CN104964752A (en) * | 2015-06-29 | 2015-10-07 | 苏州工业园区驿力机车科技有限公司 | Temperature sensor applied to automotive engine cooling system and potting method of temperature sensor potting adhesive |
| CN106546358A (en) * | 2015-09-23 | 2017-03-29 | 深圳市易流科技股份有限公司 | A kind of temperature-sensing probe and vehicle electronics |
| CN106546358B (en) * | 2015-09-23 | 2019-05-24 | 深圳市易流科技股份有限公司 | A kind of temperature-sensing probe and vehicle electronics |
| CN109612597A (en) * | 2018-12-06 | 2019-04-12 | 株洲电力机车电机修造有限公司 | Redundancy-type temperature sensor |
| WO2021037253A1 (en) * | 2019-08-29 | 2021-03-04 | 杭州三花研究院有限公司 | Sensor and heat exchanger |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: XI'AN RAILWAY SIGNAL CO., LTD. Free format text: FORMER NAME: XI'AN RAILWAY SIGNAL FACTORY |
|
| CP03 | Change of name, title or address |
Address after: 710048 Xi'an South Railway Station, Shaanxi Province, No. 3 Xi'an railway signal Co., Ltd. Patentee after: Xi'an Railway Signal Co., Ltd. Address before: 710048 Xi'an Railway Signal Factory No. 3 Jinhua South Road, Shaanxi, Xi'an Patentee before: Xi'an Railway Signal Factory Address after: 710048 Xi'an South Railway Station, Shaanxi Province, No. 3 Xi'an railway signal Co., Ltd. Patentee after: Xi'an Railway Signal Co., Ltd. Address before: 710048 Xi'an Railway Signal Factory No. 3 Jinhua South Road, Shaanxi, Xi'an Patentee before: Xi'an Railway Signal Factory |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110323 |