CN110861990A - Temperature detection system and method for electric control device of mine explosion-proof elevator - Google Patents
Temperature detection system and method for electric control device of mine explosion-proof elevator Download PDFInfo
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- CN110861990A CN110861990A CN201911220792.2A CN201911220792A CN110861990A CN 110861990 A CN110861990 A CN 110861990A CN 201911220792 A CN201911220792 A CN 201911220792A CN 110861990 A CN110861990 A CN 110861990A
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- 238000001514 detection method Methods 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 title claims description 8
- 238000004891 communication Methods 0.000 claims abstract description 42
- 239000003638 chemical reducing agent Substances 0.000 claims description 10
- 238000005065 mining Methods 0.000 claims description 8
- 239000003245 coal Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002817 coal dust Substances 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/0006—Monitoring devices or performance analysers
- B66B5/0018—Devices monitoring the operating condition of the elevator system
- B66B5/0031—Devices monitoring the operating condition of the elevator system for safety reasons
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K13/00—Thermometers specially adapted for specific purposes
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Abstract
The invention discloses a temperature detection system and a temperature detection method for an electric control device of a mine explosion-proof elevator. The system consists of a PLC control box and an operation table. This temperature detecting system changes original multichannel temperature polling appearance into the multichannel temperature control module of taking RS485 communication port of independently researching and developing, and other devices are like the ethernet communication between PLC control box, operation panel, PLC and the touch-sensitive screen and the RS485 communication port on the touch-sensitive screen all keep unchangeable. The processing and displaying of the temperature signals, the setting of the number of channels and the alarm value, the temperature alarm output and the like are all finished on the touch screen. The temperature detection system has the characteristics of flexible and convenient temperature setting, economy, practicability, safety, reliability and the like.
Description
Technical Field
The invention belongs to the field of automatic control, and particularly relates to a temperature detection system and method for an electric control device of a mine explosion-proof elevator.
Background
The mining explosion-proof elevator is important transportation equipment working under the environment of explosive gas such as coal dust, gas and the like in a coal mine, and is mainly used for carrying personnel and materials. The mining explosion-proof elevator works by that an explosion-proof motor drives a roller to rotate through a speed reducer, and the roller drives a lifting container to reciprocate on a track through a steel wire rope wound on the roller. The motor, the speed reducer and the roller are connected through a mechanical shaft and rotate by virtue of a bearing. When the motor, the speed reducer and the bearing are in full-load and high-speed operation for a long time, the internal temperature of the motor, the speed reducer and the bearing is continuously increased due to the loss of electric power and mechanical power, and the devices are often damaged due to poor heat dissipation and overhigh temperature because the underground environment of the coal mine is humid and the ventilation is not smooth, so that the safe operation of the hoister is threatened. Therefore, it is essential to detect the temperatures of the motor, the reducer, and the bearing. Usually, a multi-channel temperature polling instrument is installed in a PLC control box in an explosion-proof electric control device of a hoist to detect temperature signals of a motor, a speed reducer and a bearing. The patrol inspection instrument can set the number of channels and alarm values of temperature signals, and the alarm output is usually sent to a PLC in a relay contact form for temperature protection. In practical application, the channel number and the alarm value of the temperature signal are required to be modified on site sometimes, but in a normal situation, the modification is difficult to achieve, because the situation that the box is opened or electrified in an explosion-proof site is not allowed to happen, and otherwise, the explosion is caused. If the parameters of the temperature polling instrument need to be modified, other explosion-proof measures need to be taken, which is very inconvenient.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a temperature detection system and method for an electric control device of a mine explosion-proof elevator. The temperature detection system is characterized in that a multi-path temperature polling instrument in a PLC control box in an explosion-proof electric control device of the elevator is replaced by a multi-path temperature control module which is independently researched and developed, the multi-path temperature control module collects temperature signals of a motor, a speed reducer and a bearing, and then the temperature signals are transmitted to a touch screen in an operation table in the explosion-proof electric control device of the elevator in an RS485 communication mode. In the touch screen, the temperature signals of all channels can be processed and displayed, and the number of the channels and the alarm value of each channel can be independently set. The temperature signals of all channels can be compared with the temperature set values through the script program of the touch screen, and temperature alarm signals are given. The temperature alarm signal can be sent to the PLC through the Ethernet communication between the touch screen and the PLC for over-temperature protection.
This temperature-detecting system, except that the appearance is patrolled and examined to original multichannel temperature more than changing the multichannel temperature control module of taking RS485 communication interface for independently researching and developing, other devices if: the PLC control box, the operation panel, the Ethernet communication between the PLC and the touch screen and the RS485 communication interface on the touch screen are original devices. Compared with the original multi-channel temperature polling instrument, the self-made and developed multi-channel temperature control module is simplified in function, does not have the functions of channel selection and alarm value setting, but can carry out channel selection and alarm value setting through a touch screen picture, and the product with the simplified function has more cost advantage. The temperature detection system is characterized in that: the temperature setting is flexible and convenient, economical and practical, safe and reliable.
The technical scheme of the invention is as follows: the temperature detection system for the electric control device of the mining explosion-proof elevator comprises a PLC control box and an operation table, wherein the PLC control box and the operation table are connected through a power line, a network cable and an RS485 communication line.
The PLC control box consists of a two-pole circuit breaker, a direct-current power supply, a programmable controller and a plurality of temperature control modules; the two-pole circuit breaker includes: the circuit breaker first pole, circuit breaker second pole, programmable controller contain ethernet interface X1, and multichannel temperature control module contains RS485 communication interface X2.
The operation panel is composed of a touch screen. The touch screen comprises an Ethernet interface Y1, an RS485 communication interface Y2, a temperature setting picture, a touch screen variable table, a touch screen temperature variable table and a script program. The touch screen variable table comprises a touch screen variable, a PLC variable and a data type, and the touch screen temperature variable table comprises a touch screen temperature variable and a module temperature variable.
In the PLC control box, one end of an external 220V alternating current power supply is connected with one end of a first pole of the circuit breaker, and the other end of the alternating current power supply is connected with one end of a second pole of the circuit breaker; the other end of the first pole of the circuit breaker is connected with one input end of the direct current power supply, and the other end of the second pole of the circuit breaker is connected with the other input end of the direct current power supply; the positive output end of the direct current power supply is connected with the positive power supply of the programmable controller and the positive power supply of the multi-path temperature control module, and is also connected with the positive power supply of the touch screen in the operation table through a power line. The negative output end of the direct current power supply is connected with the power supply negative of the programmable controller and the power supply negative of the multi-path temperature control module, and is also connected with the power supply negative of the touch screen in the operation table through a power line; an Ethernet interface X1 in the programmable controller is connected with an Ethernet interface Y1 of the touch screen in the operation panel through a network cable; and an RS485 communication interface X2 in the multi-path temperature control module is connected with an RS485 communication interface Y2 of a touch screen in the operating table through a 485 communication line.
In the operation panel, temperature signals of ten channels can be set in a temperature setting picture of the touch screen, and each channel comprises a channel switch, a channel temperature and a channel alarm value. The channel switch can close and open the channel temperature signal; the channel temperature is associated with a touch screen temperature variable in the touch screen temperature variable table, and the channel temperature is used for displaying the channel temperature value and participating in temperature protection in the script program; the channel alarm value can set the channel alarm temperature and is associated with the temperature set value in the script program; the temperature alarm signal generated by comparing the channel temperature in the script program with the temperature set value is associated with one touch screen variable in the touch screen variable table and is also associated with one PLC variable. The PLC variable transmits a temperature alarm signal to a PLC program through Ethernet communication to implement over-temperature protection; and temperature signals in the multiple temperature control modules are transmitted to module temperature variables in the touch screen temperature variable table through RS485 communication, and the module temperature variables are in one-to-one correspondence with the touch screen temperature variables and are mapped with each other.
Based on the temperature detection system of the electric control device of the mining explosion-proof elevator, the invention provides a temperature detection method, which comprises the following steps:
the method comprises the following steps: the method comprises the steps of firstly setting a temperature setting picture on a touch screen, and setting temperature detection signals of ten channels in total, wherein each channel comprises a channel switch, a channel temperature and a channel alarm value. Setting a channel switch to be in an open state for a channel needing temperature display;
step two: the multi-path temperature control module collects temperature signals from parts needing to be detected, such as a motor, a speed reducer, a bearing and the like, transmits the temperature signals to the touch screen through an RS485 communication interface X2, and stores the temperature signals in module temperature variables in the touch screen temperature variable table;
step three: the module temperature variable endows the acquired temperature signal to the channel temperature of the corresponding channel in the temperature setting picture for temperature display through the temperature variable of the touch screen; meanwhile, the script program is also given to the script program and is compared with the corresponding channel temperature set value;
step four: after the channel temperature in the script program is compared with a temperature set value, when the channel alarm temperature is reached, a temperature alarm signal is generated, and the temperature alarm signal is transmitted to the programmable controller for over-temperature protection through Ethernet communication between the touch screen and the programmable controller.
The invention has the beneficial effects that: the temperature detection system of the electric control device of the mining explosion-proof elevator not only simplifies the functions of the original multi-path temperature polling instrument and reduces the cost, but also has the characteristics of flexible, simple, convenient, rapid and accurate temperature detection, safety, reliability, economy and practicability.
Drawings
FIG. 1 is a block diagram of the circuit of the present invention;
fig. 2 is a schematic diagram of the circuit of the present invention.
Detailed Description
The invention is described in detail below with reference to the accompanying drawings and examples.
As shown in figure 1, the temperature detection system for the electric control device of the mining explosion-proof elevator comprises a PLC control box (A) and an operation table (B), wherein the PLC control box (A) and the operation table (B) are connected through a power line, a network cable and a 485 communication line.
As shown in fig. 2, the PLC control box (a) is composed of a two-pole circuit breaker, a dc power supply (2), a programmable controller (3), and a multi-path temperature control module (4); the two-pole circuit breaker includes: the circuit breaker is characterized in that the circuit breaker comprises a first pole (1.1) and a second pole (1.2), the programmable controller (3) comprises an Ethernet interface X1, and the multi-path temperature control module (4) comprises an RS485 communication interface X2.
The operation table (B) is composed of a touch screen (8). The touch screen (8) comprises an Ethernet interface Y1, an RS485 communication interface Y2, a temperature setting picture (8.1), a touch screen variable table (8.2), a touch screen temperature variable table (8.3) and a script program (8.4). The touch screen variable table (8.2) comprises touch screen variables, PLC variables and data types, and the touch screen temperature variable table (8.3) comprises touch screen temperature variables and module temperature variables.
In the PLC control box (A): the C end of an external 220V alternating current power supply is connected with one end of a first pole (1.1) of the circuit breaker, and the D end of the alternating current power supply is connected with one end of a second pole (1.2) of the circuit breaker; the other end of the first pole (1.1) of the circuit breaker is connected with the input end L of the direct current power supply (2), and the other end of the second pole (1.2) of the circuit breaker is connected with the other input end N of the direct current power supply (2); the positive output end V of the direct current power supply (2) is connected with the positive power L + of the programmable controller (3) and the positive power M + of the multi-path temperature control module (4), and is connected with the positive power of the touch screen (8) of the operating console (B) through a power line. The negative output end G of the direct current power supply (2) is connected with the power supply negative L-of the programmable controller (3) and the power supply negative M-of the multi-path temperature control module (4), and is also connected with the power supply negative of the touch screen (8) in the operation table (B) through a power line; the Ethernet interface X1 of the programmable controller (3) is connected with the Ethernet interface Y1 of the touch screen (8) in the console (B) through a network cable; and an RS485 communication interface X2 of the multi-path temperature control module (4) is connected with an RS485 communication interface Y2 of a touch screen (8) in the operating console (B) through an RS485 communication line.
In the operation panel (B), temperature signals of ten channels can be set in a temperature setting picture (8.1) of the touch screen (8), the serial numbers are from one channel to ten channels, and each channel comprises a channel switch, a channel temperature and a channel alarm value. The channel switch can close and open the channel temperature signal; the channel temperature is associated with a touch screen temperature variable in a touch screen temperature variable table (8.3), and is used for displaying the channel temperature value and participating in temperature protection in the script program (8.4); the channel alarm value can set the channel alarm temperature and is associated with the temperature set value in the script program (8.4); the Ethernet interface Y1 of the touch screen (8) is connected with the Ethernet interface X1 of the programmable controller (3) through a network cable. The temperature alarm signal generated by comparing the channel temperature in the script program (8.4) with the temperature set value is associated with one touch screen variable in the touch screen variable table (8.2) and is also associated with one PLC variable. The PLC variable transmits a temperature alarm signal to a PLC program through Ethernet communication to implement over-temperature protection; and an RS485 communication interface X2 on the multi-path temperature control module (4) is connected with an RS485 communication interface Y2 on the touch screen (8) through a 485 communication cable. The temperature signals in the multi-channel temperature control module (4) are transmitted to the module temperature variables in the touch screen temperature variable table (8.3) through RS485 communication, and the module temperature variables are in one-to-one correspondence with the touch screen temperature variables and are mapped with each other.
Based on the temperature detection system of the electric control device of the mining explosion-proof elevator, the invention provides a temperature detection method, which comprises the following steps:
the method comprises the following steps: firstly, a temperature setting picture (8.1) on a touch screen (8) is set, temperature detection signals of ten channels in total from one channel to ten channels are set, and each channel comprises a channel switch, a channel temperature and a channel alarm value. Setting a channel switch to be in an open state for a channel needing temperature display;
step two: the multi-path temperature control module (4) collects temperature signals from parts needing to be detected, such as a motor, a speed reducer, a bearing and the like, transmits the temperature signals to the touch screen (8) through an RS485 communication interface X2, and stores the temperature signals in a module temperature variable in a touch screen temperature variable table (8.3);
step three: the module temperature variable endows the acquired temperature signal to the channel temperature of the corresponding channel in the temperature setting picture (8.1) for temperature display through the temperature variable of the touch screen; at the same time, the script program (8.4) is also given, and is compared with the corresponding channel temperature set value;
step four: after the channel temperature in the script program (8.4) is compared with a temperature set value, when the channel alarm temperature is reached, a temperature alarm signal is generated, and the temperature alarm signal is transmitted to the programmable controller (3) for over-temperature protection through Ethernet communication between the touch screen (8) and the programmable controller (3).
Claims (2)
1. The utility model provides a mining explosion-proof lifting machine electrically controlled device temperature detecting system which characterized in that: the temperature detection system consists of a PLC control box (A) and an operation table (B), wherein the PLC control box (A) and the operation table (B) are connected through a power line, a network cable and a 485 communication line; the PLC control box (A) consists of a two-pole circuit breaker, a direct-current power supply (2), a programmable controller (3) and a multi-path temperature control module (4); the two-pole circuit breaker includes: the circuit breaker comprises a first pole (1.1) of the circuit breaker and a second pole (1.2) of the circuit breaker, wherein the programmable controller (3) comprises an Ethernet interface X1, and the multi-path temperature control module (4) comprises an RS485 communication interface X2; the operating platform (B) is composed of a touch screen (8), and the touch screen (8) comprises an Ethernet interface Y1, an RS485 communication interface Y2, a temperature setting picture (8.1), a touch screen variable table (8.2), a touch screen temperature variable table (8.3) and a script program (8.4); the touch screen variable table (8.2) comprises touch screen variables, PLC variables and data types, and the touch screen temperature variable table (8.3) comprises touch screen temperature variables and module temperature variables; in the PLC control box (A), the C end of an external 220V alternating current power supply is connected with one end of a first pole (1.1) of the circuit breaker, and the D end of the alternating current power supply is connected with one end of a second pole (1.2) of the circuit breaker; the other end of the first pole (1.1) of the circuit breaker is connected with the input end L of the direct current power supply (2), and the other end of the second pole (1.2) of the circuit breaker is connected with the other input end N of the direct current power supply (2); the positive output end V of the direct current power supply (2) is connected with a positive power supply L + of the programmable controller (3) and a positive power supply M + of the multi-path temperature control module (4), and is connected with a positive power supply of a touch screen (8) of the operating console (B) through a power line; the negative output end G of the direct current power supply (2) is connected with the power supply negative L-of the programmable controller (3) and the power supply negative M-of the multi-path temperature control module (4), and is also connected with the power supply negative of the touch screen (8) in the operation table (B) through a power line; the Ethernet interface X1 of the programmable controller (3) is connected with the Ethernet interface Y1 of the touch screen (8) in the console (B) through a network cable; an RS485 communication interface X2 of the multi-path temperature control module (4) is connected with an RS485 communication interface Y2 of a touch screen (8) in the operating console (B) through a 485 communication line; in the operating console (B), ten channels are arranged in a temperature setting picture (8.1) of the touch screen (8), wherein the channels are from one channel to ten channels, and each channel comprises a channel switch, a channel temperature and a channel alarm value; the Ethernet interface Y1 of the touch screen (8) is connected with the Ethernet interface X1 of the programmable controller (3) through a network cable; and an RS485 communication interface X2 of the multi-path temperature control module (4) is connected with an RS485 communication interface Y2 of the touch screen (8) through an RS485 communication cable.
2. The temperature detection method of the temperature detection system of the electric control device of the mine explosion-proof hoist based on the claim 1 is characterized by comprising the following steps: the detection method comprises the following steps:
the method comprises the following steps: firstly, setting a temperature setting picture (8.1) on a touch screen (8), wherein temperature detection signals of ten channels in total from one channel to ten channels are set, and each channel comprises a channel switch, a channel temperature and a channel alarm value;
setting a channel switch to be in an open state for a channel needing temperature display;
step two: the multi-path temperature control module (4) collects temperature signals from parts needing to be detected, such as a motor, a speed reducer, a bearing and the like, transmits the temperature signals to the touch screen (8) through an RS485 communication interface X2, and stores the temperature signals in a module temperature variable in a touch screen temperature variable table (8.3);
step three: the module temperature variable endows the acquired temperature signal to the channel temperature of the corresponding channel in the temperature setting picture (8.1) for temperature display through the temperature variable of the touch screen; at the same time, the script program (8.4) is also given, and is compared with the corresponding channel temperature set value;
step four: after the channel temperature in the script program (8.4) is compared with a temperature set value, when the channel alarm temperature is reached, a temperature alarm signal is generated, and the temperature alarm signal is transmitted to the programmable controller (3) for over-temperature protection through Ethernet communication between the touch screen (8) and the programmable controller (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911220792.2A CN110861990A (en) | 2019-12-03 | 2019-12-03 | Temperature detection system and method for electric control device of mine explosion-proof elevator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911220792.2A CN110861990A (en) | 2019-12-03 | 2019-12-03 | Temperature detection system and method for electric control device of mine explosion-proof elevator |
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| Publication Number | Publication Date |
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| CN110861990A true CN110861990A (en) | 2020-03-06 |
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| CN201911220792.2A Withdrawn CN110861990A (en) | 2019-12-03 | 2019-12-03 | Temperature detection system and method for electric control device of mine explosion-proof elevator |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102297735A (en) * | 2011-05-20 | 2011-12-28 | 佛山市质量计量监督检测中心 | Standard constant temperature bath touch screen intelligent measurement control and automatic metering detection system |
| CN102914377A (en) * | 2012-11-07 | 2013-02-06 | 王璐 | Multipoint temperature monitoring system |
| CN204423194U (en) * | 2014-12-31 | 2015-06-24 | 李久伦 | Multi-channel hot runner Centralized Controller |
| CN205099178U (en) * | 2015-10-10 | 2016-03-23 | 中信重工开诚智能装备有限公司 | Mining explosion -proof lifting machine electrically controlled device |
| CN105806506A (en) * | 2016-06-01 | 2016-07-27 | 中冶东方工程技术有限公司 | Multi-circuit temperature measuring system |
| CN109343599A (en) * | 2018-11-20 | 2019-02-15 | 山西潞安环保能源开发股份有限公司常村煤矿 | A kind of auxiliary shaft hoisting main motor electronic temperature controller |
| CN110398296A (en) * | 2019-07-31 | 2019-11-01 | 中国人民解放军海军工程大学 | A kind of engine exhaust temperature cruising inspection system based on ModbusTCP/IP |
-
2019
- 2019-12-03 CN CN201911220792.2A patent/CN110861990A/en not_active Withdrawn
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102297735A (en) * | 2011-05-20 | 2011-12-28 | 佛山市质量计量监督检测中心 | Standard constant temperature bath touch screen intelligent measurement control and automatic metering detection system |
| CN102914377A (en) * | 2012-11-07 | 2013-02-06 | 王璐 | Multipoint temperature monitoring system |
| CN204423194U (en) * | 2014-12-31 | 2015-06-24 | 李久伦 | Multi-channel hot runner Centralized Controller |
| CN205099178U (en) * | 2015-10-10 | 2016-03-23 | 中信重工开诚智能装备有限公司 | Mining explosion -proof lifting machine electrically controlled device |
| CN105806506A (en) * | 2016-06-01 | 2016-07-27 | 中冶东方工程技术有限公司 | Multi-circuit temperature measuring system |
| CN109343599A (en) * | 2018-11-20 | 2019-02-15 | 山西潞安环保能源开发股份有限公司常村煤矿 | A kind of auxiliary shaft hoisting main motor electronic temperature controller |
| CN110398296A (en) * | 2019-07-31 | 2019-11-01 | 中国人民解放军海军工程大学 | A kind of engine exhaust temperature cruising inspection system based on ModbusTCP/IP |
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Application publication date: 20200306 |