CN203432708U - Mine-used temperature sensor - Google Patents
Mine-used temperature sensor Download PDFInfo
- Publication number
- CN203432708U CN203432708U CN201320282065.0U CN201320282065U CN203432708U CN 203432708 U CN203432708 U CN 203432708U CN 201320282065 U CN201320282065 U CN 201320282065U CN 203432708 U CN203432708 U CN 203432708U
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- circuit board
- detection probe
- temperature sensor
- main chamber
- temperature
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Abstract
The utility model discloses a mine-used temperature sensor which comprises a detection probe, a main cavity, a cover plate and a bracket, wherein a circuit board assembly is arranged in the main cavity, the input end of the circuit board assembly is connected with the detection probe through a signal line, the output end of the circuit board assembly communicates with external equipment through a wiring terminal and a transmission line, the detection probe is a platinum thermal resistor, and the circuit board assembly includes a first-stage operational amplifier and a second-stage operational amplifier which are electrically connected in sequence. The mine-used temperature sensor makes use of the principle in which the resistance of the platinum thermal resistor changes with temperature, a temperature coefficient sampled by the platinum thermal resistor is compared with a temperature matching value in the second-stage operational amplifier after being amplified by the first-stage operational amplifier, the temperature coefficient is output if the temperature coefficient is larger than the temperature matching value, and a low-level signal generated after the temperature coefficient is output is an alarm signal which is transmitted to the external equipment through the transmission line. No single chip microcomputer is required, complex processes such as programming are not adopted, the principle is simple, and safety and reliability are achieved.
Description
Technical field
The utility model relates to a kind of sensor, relates in particular to a kind of mining temperature sensor.
Background technology
Under coal mine, the workplace such as open coal mine and coal preparation plant generally all contains damp, such as CH
4, when reaching uniform temperature, cause CH
4gas burst, not only can cause damage of facilities, and can cause casualties.In order to detect the environment temperature of the inferior workplace of coal mine, the ad hoc mining temperature sensor of having counted of industry.
At present, application number is 201220340728.5, patent name is that the patent of mining temperature sensor discloses a kind of mining temperature sensor, it comprises an intrinsic safety type shell, temperature sensor scheme board component is installed in shell, the temperature sensor probe being connected with described temperature sensor scheme board component stretches out outside shell, shell is also provided with the cable splice being connected with circuit board module, wherein, circuit board module comprises sample circuit, toggle switch, single-chip microcomputer, power module and amplifying circuit, during work, sample circuit samples for the temperature data that temperature sensor probe is collected, toggle switch is used for setting alarm temperature, single-chip microcomputer is for obtaining the temperature data that sample circuit obtains, converting thereof into corresponding temperature frequency signal is sent to main control system and processes, the temperature data simultaneously being obtained compares with the temperature threshold setting in advance, if exceed temperature threshold, output alarm signal is to main control system, after amplifying, the temperature frequency signal that amplifying circuit is exported single-chip microcomputer and output alarm signal export main control system to, power module is for powering to equipment.It can be realized and exceed preset temperature and report to the police and avoid causing the function of security incident, but it adopts single-chip microcomputer, and programming is complicated.
Utility model content
The problem existing for prior art, the utility model aims to provide simple, the safe and reliable mining temperature sensor of a kind of principle.
The utility model provides a kind of mining temperature sensor, for detection of environment temperature or instrument temperature, comprise detection probe, main chamber, cover plate and support, described main chamber is fixed on described support, described detection probe is revealed in outside described main chamber, described cover plate is covered on described main chamber, in described main chamber, be provided with circuit board assemblies, and the input end of described circuit board assemblies is connected with detection probe by signal wire, the output terminal of described circuit board assemblies is by connection terminal and transmission line and external device communication, described detection probe is platinum resistance thermometer sensor, and before described detection probe and described signal wire, be provided with heat pipe, described circuit board assemblies comprises one-level operational amplifier and the two-level operating amplifier being sequentially electrically connected.
Further, described transmission line is fixed by gland nut and pressing plate and described connection terminal.
Further, described circuit board assemblies also comprises power circuit.
Preferably, between described pressing plate and described main chamber, be provided with O-ring seal.
The described mining temperature sensor that the utility model provides, it adopts platinum resistance thermometer sensor, to vary with temperature and the principle of resistance change, the temperature coefficient that platinum resistance thermometer sensor, is sampled amplifies one-level operational amplifier the Temperature Matching value comparison of processing in rear and two-level operating amplifier, if export while being greater than matching value, the low level signal producing after output is alerting signal, by transmission line to external unit, it is without adopting single-chip microcomputer, the complicated technique such as programming, principle is simple, and safe and reliable; Between described pressing plate and described main chamber, be also provided with O-ring seal, dust reduction capability is strong.
Accompanying drawing explanation
Fig. 1 is the vertical view cutaway drawing of a kind of mining temperature sensor that the utility model proposes;
Fig. 2 is the side view of Fig. 1;
Fig. 3 is the control block diagram of a kind of mining temperature sensor that the utility model proposes.
Drawing reference numeral explanation
Main chamber 1, circuit board assemblies 2, signal wire 3, cover plate 4, O-ring seal 5, small washer 6, pressing plate 7, gland nut 8, support 9, transmission line 10, Cross Recess Head Screw 11, external unit 12, cross recessed pan head tapping screw 13, one-level operational amplifier 14, heat pipe 15, detection probe 16, two-level operating amplifier 17.
Embodiment
Below in conjunction with accompanying drawing and by embodiment, further illustrate the technical solution of the utility model:
Please refer to Fig. 1 and Fig. 2, the utility model provides a kind of mining temperature sensor, for detection of environment temperature or instrument temperature, comprises detection probe 16, main chamber 1, cover plate 4 and support 9.
Please refer to Fig. 1 and Fig. 2, described main chamber 1 is fixed on described support 9, and described detection probe 16 is revealed in outside described main chamber 1, and described cover plate 4 is fixed on described main chamber 1 by Cross Recess Head Screw 11 and plain washer.
Please refer to Fig. 1 to Fig. 3, in described main chamber 1, be provided with circuit board assemblies 2, described circuit board assemblies 2 is fixed in described main chamber 1 by cross recessed pan head tapping screw 13 and plain washer, and the input end of described circuit board assemblies 2 is connected with detection probe 16 by signal wire 3, the output terminal of described circuit board assemblies 2 is communicated by letter with external unit 12 with transmission line 10 by connection terminal (not shown), described detection probe 16 is platinum resistance thermometer sensor,, and described detection probe 16 is provided with heat pipe 15 before with described signal wire 3.
Please refer to Fig. 1 and Fig. 3, one-level operational amplifier 14 and two-level operating amplifier 17 that described circuit board assemblies 2 comprises power circuit (not shown) and is sequentially electrically connected.
Please refer to Fig. 1 and Fig. 2, described transmission line 10 is fixed with described connection terminal by gland nut 8 and pressing plate 7, and is provided with O-ring seal 5 between described pressing plate 7 and described main chamber 1, between described O-ring seal 5 and described pressing plate 7, is also provided with small washer 6.
During work, please refer to Fig. 1 to Fig. 3, the described mining temperature sensor that the utility model provides, it adopts platinum resistance thermometer sensor, to vary with temperature and the principle of resistance change, first use the temperature coefficient in detection probe 16 sampling work places, then this temperature coefficient is amplified to processing with one-level operational amplifier 14, then the data after amplification being processed and the Temperature Matching value comparison in two-level operating amplifier 17, if export while being greater than matching value, the low level signal producing after output is alerting signal, by transmission line 10, be transferred to external unit 12, the present embodiment peripheral equipment 12 is preferably PLC.
To sum up, the described mining temperature sensor that the utility model provides is without adopting single-chip microcomputer, the complicated technique such as programming, and principle is simple, and safe and reliable; Between described pressing plate and described main chamber, be also provided with O-ring seal, dust reduction capability is strong.
By reference to the accompanying drawings the utility model has been carried out to exemplary description above; obvious realization of the present utility model is not subject to the restrictions described above; as long as the various improvement that adopted technical solutions of the utility model to carry out; or without improving, design of the present utility model and technical scheme are directly applied to other occasion, all in protection domain of the present utility model.
Claims (4)
1. a mining temperature sensor, for detection of environment temperature or instrument temperature, comprise detection probe, main chamber, cover plate and support, described main chamber is fixed on described support, described detection probe is revealed in outside described main chamber, described cover plate is covered on described main chamber, in described main chamber, be provided with circuit board assemblies, and the input end of described circuit board assemblies is connected with detection probe by signal wire, the output terminal of described circuit board assemblies is by connection terminal and transmission line and external device communication, it is characterized in that, described detection probe is platinum resistance thermometer sensor, and before described detection probe and described signal wire, be provided with heat pipe, described circuit board assemblies comprises one-level operational amplifier and the two-level operating amplifier being sequentially electrically connected.
2. mining temperature sensor according to claim 1, is characterized in that, described transmission line is fixed by gland nut and pressing plate and described connection terminal.
3. mining temperature sensor according to claim 2, is characterized in that, between described pressing plate and described main chamber, is provided with O-ring seal.
4. mining temperature sensor according to claim 1, is characterized in that, described circuit board assemblies also comprises power circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320282065.0U CN203432708U (en) | 2013-05-22 | 2013-05-22 | Mine-used temperature sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320282065.0U CN203432708U (en) | 2013-05-22 | 2013-05-22 | Mine-used temperature sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203432708U true CN203432708U (en) | 2014-02-12 |
Family
ID=50061740
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320282065.0U Expired - Lifetime CN203432708U (en) | 2013-05-22 | 2013-05-22 | Mine-used temperature sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203432708U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105425870A (en) * | 2015-11-05 | 2016-03-23 | 广东辉宏信息科技有限公司 | Temperature-humidity detection and early warning system of firework and firecracker production place |
| CN108844650A (en) * | 2018-08-16 | 2018-11-20 | 徐州江煤科技有限公司 | A kind of fire behavior detection system sensor |
| CN108981920A (en) * | 2018-06-28 | 2018-12-11 | 安徽恒泰电气科技股份有限公司 | A kind of mining intelligent temperature sensor |
| CN113674503A (en) * | 2021-09-23 | 2021-11-19 | 深圳达温技术服务有限公司 | Infrared temperature fire alarm capable of being connected to fire protection bus and alarm method |
-
2013
- 2013-05-22 CN CN201320282065.0U patent/CN203432708U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105425870A (en) * | 2015-11-05 | 2016-03-23 | 广东辉宏信息科技有限公司 | Temperature-humidity detection and early warning system of firework and firecracker production place |
| CN108981920A (en) * | 2018-06-28 | 2018-12-11 | 安徽恒泰电气科技股份有限公司 | A kind of mining intelligent temperature sensor |
| CN108844650A (en) * | 2018-08-16 | 2018-11-20 | 徐州江煤科技有限公司 | A kind of fire behavior detection system sensor |
| CN113674503A (en) * | 2021-09-23 | 2021-11-19 | 深圳达温技术服务有限公司 | Infrared temperature fire alarm capable of being connected to fire protection bus and alarm method |
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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: 20140212 |
|
| CX01 | Expiry of patent term |