CN104677514A - Wireless temperature measurement system for connection terminals of motor - Google Patents

Wireless temperature measurement system for connection terminals of motor Download PDF

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Publication number
CN104677514A
CN104677514A CN201310639209.8A CN201310639209A CN104677514A CN 104677514 A CN104677514 A CN 104677514A CN 201310639209 A CN201310639209 A CN 201310639209A CN 104677514 A CN104677514 A CN 104677514A
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China
Prior art keywords
wireless
temperature
motor
radio frequency
temperature measurement
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CN201310639209.8A
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Chinese (zh)
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CN104677514B (en
Inventor
崔世界
尚志军
曾鹏
于海斌
王芝茗
葛维春
赵庆杞
张宏宇
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Shenyang Institute of Automation of CAS
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Shenyang Institute of Automation of CAS
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Abstract

The invention discloses a wireless temperature measurement system for connection terminals of a motor. The system comprises wireless temperature measurement sensors, wireless relays and a wireless gateway computer, wherein the wireless temperature measurement sensors are provided with mounting lugs, can be directly and fixedly arranged on binding posts in a junction box of the motor, and are used for accurately detecting the temperature of the connection terminals in real time, and transmitting temperature data to the wireless relays through radio frequency signals; the wireless relays are arranged nearby the wireless temperature measurement sensors, and are used for aggregating and forwarding the data of the wireless temperature measurement sensors within an effectively communication range; the wireless gateway computer is used for communicating with a master monitoring station, and transmitting the wireless temperature measurement data to the master monitoring station. According to the system, the wireless temperature measurement sensors are not provided with any external lead, so that the system is small in size and easy to mount; the temperature of the connection terminals of the motor can be monitored in real time, and the master monitoring station can be matched to effectively determine heating failures of the connection terminals of the motor, so that the safe and reliable running of the motor is ensured.

Description

A kind of motor terminals wireless temperature measurement system
Technical field
The present invention relates to a kind of motor temp measuring system, specifically a kind of wireless temperature measurement system for motor terminals place.
Background technology
Due to motor operationally body be in vibrational state, long-play, easily cause connection terminal loosen, cause local electrical resistance to increase.When continuing current flow passes through, cause electric machine joint place overheated, if even motor damage can not will be there is by causing trouble by Timeliness coverage.
At present, connecting terminal of motor temp measuring system is actually rare, and great majority are wired thermometric mode.In the occasion of machine operation circumstance complication, cable laying engineering construction amount is large, costly.And minority adopts the temp measuring system of wireless mode to be also be connected with Wireless Telecom Equipment by lead-in wire by temperature sensor, lead-in wire too much like this can make motor connecting cartridge space narrow especially, affect the insulating property between each lead-in wire, thus reduce the safety coefficient of motor.
Summary of the invention
For above shortcomings part in prior art, the technical problem to be solved in the present invention is to provide a kind of temperature probe without any outside lead, is directly installed to the motor terminals wireless temperature measurement system in motor connecting cartridge.
The technical scheme that the present invention is adopted for achieving the above object is: a kind of motor terminals wireless temperature measurement system, comprising:
Wireless temperature-measuring sensor, for detecting the temperature at connecting terminal of motor place, with the mounting ear with conduction of heat, for being directly fixed on motor binding post, by the temperature conduction at motor terminals place to the temperature sensing device of wireless temperature-measuring sensor inside, the temperature data that temperature sensing device collects sends neighbouring wireless repeater to by radiofrequency signal;
Wireless repeater, the temperature data that the multiple wireless temperature-measuring sensors for receiving within the scope of effective communication send, and be transmitted to wireless network shutdown;
Wireless network shuts down, for collecting the temperature data that each wireless repeater sends.
Described wireless temperature-measuring sensor is installed on the binding post of A, B, C phase in motor connecting cartridge.
Described wireless temperature-measuring sensor comprises: sensor assembly, processor module, wireless radio frequency modules, powered battery module and built-in aerial;
Described sensor assembly adopts the one-line digital temperature sensor of DS18B20;
Described processor module adopts super low power consuming single chip processor MSP430F2112, is responsible for the temperature data gathering described sensor assembly, and sends data to wireless repeater by wireless radio frequency modules and built-in aerial;
Described wireless radio frequency modules adopts SI4432 radio frequency chip, and working frequency range is 240M ~ 930M;
Described powered battery module in charge provides working power to above-mentioned modules.
Described wireless repeater comprises: processor module, wireless radio frequency modules, powered battery module and external antenna;
Described processor module adopts super low power consuming single chip processor MSP430F2112, is responsible for gathering the temperature data that the multiple wireless temperature-measuring sensors received within the scope of effective communication send, and is transmitted to wireless network shutdown by wireless radio frequency modules and external antenna;
Described wireless radio frequency modules adopts SI4432 radio frequency chip, and working frequency range is 240M ~ 930M;
Described powered battery module in charge provides working power to above-mentioned modules.
Described wireless network shutdown comprises: processor module, communication interface modules, power module, wireless radio frequency modules and external antenna;
Described processor module adopts STM32F103RE chip, is managed wireless network by wireless radio frequency modules and external antenna, receive the temperature data of wireless repeater transmission, is communicated with master station;
Described communication interface modules comprises standard RS232 serial communication interface and ethernet interface;
The 5V Power convert that system is provided by low pressure difference linear voltage regulator chip AMS1117-3.3 by described power module becomes 3.3V for above-mentioned modules.
Described wireless repeater and the multiple wireless temperature-measuring sensors near it form hub-and-spoke configuration.
Adopt multi-hop ad hoc networking between described wireless repeater, form network.
Described wireless network shutdown is in master station.
The present invention has the following advantages and beneficial effect:
1. wireless temperature-measuring sensor is directly installed on the binding post in connection box for motor, and without any outside lead, volume is little, does not affect the insulating property between each lead-in wire, substantially increases the safety coefficient of motor.
2. wireless temperature-measuring sensor and repeater are low power consuming devices, adopt powered battery, achieve the full Wireless collection of temperature data, and in conjunction with " star-net " shape communication network form, make its usable range wide, applicability is strong.
3. can the collecting temperature frequency of radio configuration temperature probe and alarm threshold value, coordinate master station, can effectively to the motor feels hot, fault carries out early warning.
4. whole system compact conformation, install simple, cost is low.
Accompanying drawing explanation
Fig. 1 is the general structure schematic diagram of the embodiment of the present invention;
Fig. 2 is the scheme of installation of wireless temperature-measuring sensor in the embodiment of the present invention;
Fig. 3 is the hardware block diagram of wireless temperature-measuring sensor in the embodiment of the present invention;
Fig. 4 is the hardware block diagram of wireless repeater in the embodiment of the present invention;
Fig. 5 is the hardware block diagram of wireless network shutdown in the embodiment of the present invention.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in further detail.
Figure 1 shows that the general structure schematic diagram of system, whole system is in " star-net " shape structure, and multiple wireless temperature-measuring sensor and repeater form star-like communication structure.In effective communication range, a wireless repeater can receive at most the temperature data of 256 sensors, realizes the temperature data acquisition in a region.Wireless repeater itself has route and self organizing function simultaneously, and multiple repeater composition reticulate texture, can complete the temperature data acquisition in multiple region when ensureing reliable communications.This structure can make the coverage of point for measuring temperature wider, more can adapt to complicated machine operation environment.
Figure 2 shows that the scheme of installation of wireless temperature-measuring sensor.In the embodiment of the present invention, wireless temperature-measuring sensor is overall by glue embedding, and profile is long 20mm, wide 20mm, the rectangular parallelepiped of high 15mm.With mounting ear on it, length is 20mm, wide 15mm.Mounting ear has the mounting hole consistent with connection bolt, be fixed by screw on the binding post of motor line bank.In each connection box for motor, 3 sensors are installed, each one of A, B, C phase.
Described wireless temperature-measuring sensor inside is made up of sensor assembly, processor module, wireless radio frequency modules, powered battery module and built-in aerial, as shown in Figure 3.
What sensor assembly adopted is the one-line digital temperature sensor of DS18B20, and it does not directly contact with testee, carrys out detected temperatures data by high heat conduction, insulating material.
Processor module adopts super low power consuming single chip processor MSP430F2112, and quiescent current, less than 1 microampere, is responsible for the temperature data gathering DS18B20, and is sent data to wireless repeater by wireless radio frequency modules.
Wireless radio frequency modules adopts the SI4432 radio frequency chip of Silicon Labs company, and working frequency range is 240M ~ 930M, and emissive power is large, and highly sensitive, penetration performance is good.
Consider that the volume of wireless temperature-measuring sensor is little, installing space is limited, therefore adopts the form conduction radiofrequency signal of built-in aerial.
Powered battery module in charge provides working power to modules, and wireless temperature-measuring sensor adopts the working method of dormancy awakening, and power consumption is extremely low.When frequency acquisition is 1 minute, the lithium battery of single-unit 1000mAh can work more than 5 years.
Described wireless temperature-measuring sensor also supports online configuration feature, can remotely modifying temperature acquisition frequency and setting alarm threshold value.
Described wireless repeater is made up of processor module, wireless radio frequency modules, powered battery module and external antenna, as shown in Figure 4.The formation of its modules is consistent with wireless temperature-measuring sensor, just because the installing space of wireless repeater is unrestricted, so adopt the external antenna that gain is larger.
Described wireless network shutdown is made up of processor module, communication interface modules, power module, wireless radio frequency modules and external antenna, as shown in Figure 5.
What processor module adopted is the STM32F103RE chip of the STMicw Electronics that cost performance is higher, the main function realizing management wireless network, receive temperature data, communicate with master station.
Communication interface modules comprises standard RS232 serial communication interface and ethernet interface, and wireless network shutdown can select communication interface according to the actual demand of master station.
Power module is responsible for providing power supply to modules.Wireless network shutdown power consumption is relatively large and be arranged in Control Room, conveniently provides power supply, therefore adopts external power supply mode to power.Power supply is input as 5V, and 5V Power convert system provided by low pressure difference linear voltage regulator chip AMS1117-3.3 becomes 3.3V for modules.
Wireless radio frequency modules is identical with wireless repeater with external antenna.

Claims (8)

1. a motor terminals wireless temperature measurement system, is characterized in that, comprising:
Wireless temperature-measuring sensor, for detecting the temperature at connecting terminal of motor place, with the mounting ear with conduction of heat, for being directly fixed on motor binding post, by the temperature conduction at motor terminals place to the temperature sensing device of wireless temperature-measuring sensor inside, the temperature data that temperature sensing device collects sends neighbouring wireless repeater to by radiofrequency signal;
Wireless repeater, the temperature data that the multiple wireless temperature-measuring sensors for receiving within the scope of effective communication send, and be transmitted to wireless network shutdown;
Wireless network shuts down, for collecting the temperature data that each wireless repeater sends.
2. a kind of motor terminals wireless temperature measurement system according to claim 1, is characterized in that, described wireless temperature-measuring sensor is installed on the binding post of A, B, C phase in motor connecting cartridge.
3. a kind of motor terminals wireless temperature measurement system according to claim 1, it is characterized in that, described wireless temperature-measuring sensor comprises: sensor assembly, processor module, wireless radio frequency modules, powered battery module and built-in aerial;
Described sensor assembly adopts the one-line digital temperature sensor of DS18B20;
Described processor module adopts super low power consuming single chip processor MSP430F2112, is responsible for the temperature data gathering described sensor assembly, and sends data to wireless repeater by wireless radio frequency modules and built-in aerial;
Described wireless radio frequency modules adopts SI4432 radio frequency chip, and working frequency range is 240M ~ 930M;
Described powered battery module in charge provides working power to above-mentioned modules.
4. a kind of motor terminals wireless temperature measurement system according to claim 1, it is characterized in that, described wireless repeater comprises: processor module, wireless radio frequency modules, powered battery module and external antenna;
Described processor module adopts super low power consuming single chip processor MSP430F2112, is responsible for gathering the temperature data that the multiple wireless temperature-measuring sensors received within the scope of effective communication send, and is transmitted to wireless network shutdown by wireless radio frequency modules and external antenna;
Described wireless radio frequency modules adopts SI4432 radio frequency chip, and working frequency range is 240M ~ 930M;
Described powered battery module in charge provides working power to above-mentioned modules.
5. a kind of motor terminals wireless temperature measurement system according to claim 1, is characterized in that, described wireless network shutdown comprises: processor module, communication interface modules, power module, wireless radio frequency modules and external antenna;
Described processor module adopts STM32F103RE chip, is managed wireless network by wireless radio frequency modules and external antenna, receive the temperature data of wireless repeater transmission, is communicated with master station;
Described communication interface modules comprises standard RS232 serial communication interface and ethernet interface;
The 5V Power convert that system is provided by low pressure difference linear voltage regulator chip AMS1117-3.3 by described power module becomes 3.3V for above-mentioned modules.
6. a kind of motor terminals wireless temperature measurement system according to claim 1, is characterized in that, described wireless repeater and the multiple wireless temperature-measuring sensors near it form hub-and-spoke configuration.
7. a kind of motor terminals wireless temperature measurement system according to claim 1, is characterized in that, adopt multi-hop ad hoc networking between described wireless repeater, forms network.
8. a kind of motor terminals wireless temperature measurement system according to claim 1, is characterized in that, described wireless network shutdown is in master station.
CN201310639209.8A 2013-11-30 2013-11-30 A kind of motor terminals wireless temperature measurement system Active CN104677514B (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110006542A (en) * 2019-04-09 2019-07-12 保定市智能电脑有限公司 Wireless temperature measurement system based on double wireless networks
CN110621003A (en) * 2019-09-23 2019-12-27 上海大学 Electrical equipment fault diagnosis device

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Publication number Priority date Publication date Assignee Title
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Publication number Priority date Publication date Assignee Title
GB2391319B (en) * 2002-07-29 2006-02-15 Univ Michigan Tech Transponder-based microwave telemetry apparatus
CN1932907A (en) * 2006-09-27 2007-03-21 耿奎 Intelligent wireless temperature monitoring system
CN101762333A (en) * 2010-01-11 2010-06-30 山西大学 High-voltage power line wireless temperature acquisition system
CN201867270U (en) * 2010-09-09 2011-06-15 杨毅 Wireless temperature measurement system used in high-voltage power environment
CN201859027U (en) * 2010-11-04 2011-06-08 王黎 Wireless sensor for monitoring temperature in high voltage equipment
CN202149812U (en) * 2011-06-20 2012-02-22 镇江市诚翔电器有限责任公司 Wireless on-line detection device for high-voltage contact

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110006542A (en) * 2019-04-09 2019-07-12 保定市智能电脑有限公司 Wireless temperature measurement system based on double wireless networks
CN110621003A (en) * 2019-09-23 2019-12-27 上海大学 Electrical equipment fault diagnosis device

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