CN103093596A - Wireless temperature monitoring system - Google Patents

Wireless temperature monitoring system Download PDF

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Publication number
CN103093596A
CN103093596A CN2011103485725A CN201110348572A CN103093596A CN 103093596 A CN103093596 A CN 103093596A CN 2011103485725 A CN2011103485725 A CN 2011103485725A CN 201110348572 A CN201110348572 A CN 201110348572A CN 103093596 A CN103093596 A CN 103093596A
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CN
China
Prior art keywords
temperature
receiving end
processor
monitoring
environment
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN2011103485725A
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Chinese (zh)
Inventor
张中
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CRRC Datong Co ltd
Original Assignee
CNR Datong Electric Locomotive Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by CNR Datong Electric Locomotive Co Ltd filed Critical CNR Datong Electric Locomotive Co Ltd
Priority to CN2011103485725A priority Critical patent/CN103093596A/en
Priority to PCT/CN2012/077156 priority patent/WO2013067816A1/en
Publication of CN103093596A publication Critical patent/CN103093596A/en
Pending legal-status Critical Current

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
    • G01K1/02—Means for indicating or recording specially adapted for thermometers
    • G01K1/024—Means for indicating or recording specially adapted for thermometers for remote indication
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K3/00—Thermometers giving results other than momentary value of temperature
    • G01K3/005—Circuits arrangements for indicating a predetermined temperature
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q9/00—Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2209/00—Arrangements in telecontrol or telemetry systems
    • H04Q2209/80—Arrangements in the sub-station, i.e. sensing device
    • H04Q2209/82—Arrangements in the sub-station, i.e. sensing device where the sensing device takes the initiative of sending data
    • H04Q2209/823—Arrangements in the sub-station, i.e. sensing device where the sensing device takes the initiative of sending data where the data is sent when the measured values exceed a threshold, e.g. sending an alarm

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)

Abstract

A wireless temperature monitoring system comprises a transmitting end used for monitoring the first temperature of a monitored point and sending the first temperature data to a receiving end, an ambient temperature monitoring end used for monitoring the second temperature of the environment in which the monitored point is positioned and sending the second temperature data to the receiving end, and the receiving end used for monitoring the temperature increase of the monitored point relative to the environment according to the first temperature and the second temperature and emitting an alarm if the temperature increase is greater than a preset threshold, the emitting end and the receiving end are connected in a wireless mode, and the ambient temperature monitoring end and the receiving end are connected in a wired mode. The system emits an alarm to prompt a worker to process a fault through the cooperation of the transmitting end, the ambient temperature monitoring end and the receiving end when one electric appliance or line in the circuit of an electric locomotive or an electric motor train unit exceeds the threshold, so the expansion of an accident caused by the burning loss of the electric appliance or line because of long-time overheating is avoided, thereby the safety and the reliability of the electric locomotive or the electric motor train unit are realized.

Description

Wireless temperature monitoring system
Technical field
The present invention relates to monitoring technology, relate in particular to a kind of wireless temperature monitoring system.
Background technology
along with advancing and the continuous renewal of product of railway transportation equipment technology, railway administration department and users have higher requirement to the safety and reliability of electric locomotive or electric motor car group on-line operation, wherein the reliability index of 25kV High-Voltage Electrical Appliances and circuit requires higher, because in a single day this part break down, the lighter causes machine broken, severe one causes the fracture of contact net, affect other vehicle operatings on this circuit, and maintenance and rescue difficulty are large, time is long, therefore, stability and the reliability of guaranteeing the operation of electric locomotive or electric motor car group 25kV high-tension circuit or High-Voltage Electrical Appliances seem particularly important.
At present, in the various electric locomotive or electric motor car group of system or on-line operation, if because the connecting portion contact resistance becomes greatly, the lower degradation reason of insulating end insulation causes 25kV High-Voltage Electrical Appliances and circuit the problem of temperature overheating to occur, we can't learn, thereby this electrical equipment and circuit can be because of overheated scaling loss, the expansion that causes the accident.
Summary of the invention
The invention provides a kind of wireless temperature monitoring system.
This system comprises:
Transmitting terminal is used for monitoring the first temperature of monitored point, and the first temperature data is sent to receiving end;
The environment temperature monitoring side is used for monitoring the second temperature of monitored some environment of living in, and the second temperature data is sent to receiving end;
Receiving end is used for calculating described monitored temperature rise with respect to environment of living according to the first temperature and the second temperature, if described temperature rise during greater than predefined threshold value, is sent warning;
Described transmitting terminal is connected by wireless mode with described receiving end, and described environment temperature monitoring side is connected by wired mode with described receiving end.
Technique effect of the present invention is: by the cooperation of transmitting terminal, environment temperature monitoring side and receiving end, when exceeding threshold value, the temperature rise of certain electrical equipment in the circuit in electric locomotive or electric motor car group or circuit sends warning, remind staff's handling failure, avoid certain electrical equipment or circuit because of long-time overheated scaling loss, the expansion that causes the accident has realized the safety and reliability of electric locomotive or electric motor car group.
Description of drawings
Fig. 1 is the structural drawing of wireless temperature monitoring system of the present invention;
Fig. 2 is the structural drawing of transmitting terminal of the present invention;
Fig. 3 is the structural drawing of receiving end of the present invention;
Fig. 4,5,6,7 is respectively the schematic diagram of temperature display, overtemperature Threshold screen, historical overtemperature point record screen, system parameter setting screen.
Embodiment
Fig. 1 is the structural drawing of wireless temperature monitoring system of the present invention, and as shown in Figure 1, this system comprises transmitting terminal 1, environment temperature monitoring side 2 and receiving end 3.
Transmitting terminal 1 is used for monitoring the first temperature of monitored point, and the first temperature data is sent to receiving end 3; Environment temperature monitoring side 2 is used for monitoring the second temperature of monitored some environment of living in, and the second temperature data is sent to receiving end 3; Receiving end 3 is used for according to the first temperature of monitored point and the second temperature of monitored some environment of living in, calculates the temperature rise of monitored temperature with respect to environment of living in, if temperature rise during greater than predefined threshold value, is sent warning; Wherein, transmitting terminal 1 is connected by wireless mode with receiving end 3, and environment temperature monitoring side 2 is connected by wired mode with receiving end 3.
Can as required transmitting terminal 1 be arranged on the tie point place of different electric wirings or different electric components, at this moment, the number of transmitting terminal 1 is a plurality of, certainly the number of transmitting terminal 1 also can be one, and the first temperature data of the monitored point that transmitting terminal 1 is monitored by wireless transmission method is transferred to receiving end 3.The monitoring that realize monitored some ambient temperature environment temperature monitoring side 2 is transferred to receiving end 3 by wire transmission mode with ambient temperature data, provides basic data for receiving end 3 calculates monitored temperature rise with respect to environment temperature of living in.After receiving end 3 calculated temperature rise, the relation of judgement and predefined threshold value was if temperature rise is greater than threshold value, illustrate that temperature rise is too high, break down, send warning, remind staff's handling failure, avoid the long-time overheated and scaling loss of electrical equipment and circuit because, the expansion that causes the accident.
By above-mentioned technical scheme as can be known, wireless temperature monitoring system of the present invention is by the cooperation of transmitting terminal, environment temperature monitoring side and receiving end, when exceeding threshold value, the temperature rise of certain electrical equipment in the circuit in electric locomotive or electric motor car group or circuit sends warning, remind staff's handling failure, avoid certain electrical equipment or circuit because of long-time overheated scaling loss, the expansion that causes the accident has realized the safety and reliability of electric locomotive or electric motor car group.
Fig. 2 is the structural drawing of transmitting terminal of the present invention, and as shown in Figure 2, transmitting terminal 1 comprises current transformer 11, stabilized voltage supply 12, temperature sensor 13, first processor 14 and transmitter module 15.
Current transformer 11 becomes voltage for the current transitions that will flow through monitored point; Stabilized voltage supply 12 is used for the voltage transition of current transformer 11 outputs is become the operating voltage of temperature sensor 13, first processor 14 and transmitter module 15; Temperature sensor 13 is used for monitoring the temperature of monitored point, and temperature data is sent to first processor 14; First processor 14 is used for the temperature with predefined time interval collecting temperature sensor 13 outputs, and temperature data is sent to transmitter module 15; Transmitter module 15 is used for the temperature data of first processor 14 outputs is sent to receiving end 3.
Current transformer 11 provides working power for transmitting terminal 1, when having electric current to flow through in circuit, is voltage by electromagnetic induction principle with current transitions, exports to stabilized voltage supply 12; Stabilized voltage supply 12 is the operating voltage of temperature sensor 13, first processor 14 and transmitter module 15 with the voltage transitions that receives; The operating voltage of temperature sensor 13, first processor 14 and transmitter module 15 that the present inventor adopts is 3.3V, and the current transformer 11 of employing is Wound core formula current transformer.
The stabilized voltage supply 12 that the present inventor adopts is made of rectification module, power control module, electric protection module and Voltage stabilizing module; Temperature sensor 13 is digital Modular temperature sensor 13, and temperature-measuring range is-55 ℃-125 ℃, and accuracy of measurement is not less than 0.5 grade; Transmitter module 15 employings are ripe, reliable, the low-power consumption product of stable performance, and working frequency range is 2.4GHz, and transfer rate is 1Mbps, and transmitting sensitivity is not less than 1db/m; What first processor 14 adopted is the MSP430 single-chip microcomputer; Transmitting terminal 1 can tolerate the temperature of 200 degree when normal operation.
the course of work is described below: when electric current current flowing mutual inductor 11 is arranged, current transformer 11 becomes voltage with current transitions, and export to stabilized voltage supply 12, stabilized voltage supply 12 becomes temperature sensor 13 with the voltage transition that receives, the operating voltage of first processor 14 and transmitter module 15, the temperature data of the monitored point that temperature sensor 13 will monitor is exported to first processor 14, first processor 14 is with the temperature data of predefined time interval collection from temperature sensor 13, and send to transmitter module 15, transmitter module 15 is transferred to receiving end 3 by wireless transmission method with temperature data.
Fig. 3 is the structural drawing of receiving end 3 of the present invention, and as shown in Figure 3, receiving end 3 comprises: voltage transformation module 31, receiver module 32 and the second processor 32.
The voltage transformation that voltage transformation module 31 is used for the output of the accumulator on locomotive is the operating voltage of the second processor 32 and receiver module 32; Receiver module 32 is used for receiving the first temperature data of transmitting terminal 1 output, and exports to the second processor 32; The second processor 32, be used for according to from the first temperature data of receiver module 32 with from the second temperature data of environment temperature monitoring side 2, calculate the temperature rise of monitored temperature with respect to environment of living in, if temperature rise greater than predefined threshold value, is sent warning.
The course of work of receiving end 3 is described below: voltage transformation module 31 is the operating voltage of the second processor 32 and receiver module 32 with the voltage transformation of the output of the accumulator on locomotive; The first temperature data that receiver module 32 receives from transmitting terminal 1, and export to the second processor 32; The second processor 32 receives the second temperature data from environment temperature monitoring side 2 by wire transmission mode, and the temperature rise of calculating monitored temperature with respect to environment of living according to the first temperature data and the second temperature data, if temperature rise is greater than predefined threshold value, send warning, remind the staff to fix a breakdown.
The receiver module 32 that the present inventor adopts and the operating voltage of the second processor 32 are all 3.3V; What the second processor 32 adopted is the SMT32 processor, realize the storage of the first temperature data, the second temperature number by downloading to program in the second processor 32, temperature rise is calculated, comprise jtag interface on the second processor 32, by jtag interface, can realize the on-line debugging of wireless temperature monitoring system of the present invention; The working frequency range of receiver module 32 is 2.4GHz, and transfer rate is 1Mbps.
Fig. 4,5,6,7 is respectively the schematic diagram of temperature display, overtemperature Threshold screen, historical overtemperature point record screen, system parameter setting screen.
Receiving end 3 can also comprise the man-machine interaction screen, shields temperature and the warning message that can show monitored point by man-machine interaction, and concrete display interface as shown in Figure 4.
In Fig. 4, the content that temperature display shows comprises: passage, the temperature of this passage, this passage is with respect to the temperature rise of environment temperature, environment temperature, alarm condition lamp, historical overtemperature point record screen button, overtemperature Threshold screen button, systematic parameter is set screen button and overtemperature alarm ACK button.
Particularly, passage is corresponding one by one with monitored point, interface supposing the system shown in Fig. 4 comprises 10 monitored points, the alarm condition lamp is used to indicate alarm condition, and the alarm condition lamp is corresponding one by one with passage, can be, if a passage is in alarm condition, the alarm condition lamp corresponding with this passage is shown in red, if this passage is not in alarm condition, the alarm condition lamp corresponding with this passage is shown in green; Historical overtemperature point record screen button, overtemperature Threshold screen button, systematic parameter is set the screen button and is respectively used to enter corresponding interface; The overtemperature alarm ACK button is confirmed and then carries out the eliminating of fault after finding alarm condition for the staff to alarm condition.
By downloading to the program of man-machine interaction screen, the man-machine interaction screen can also be used for log history overtemperature point, sets the overtemperature threshold value, systematic parameter is set, and corresponding display interface is respectively: overtemperature Threshold screen, historical overtemperature point record screen, system parameter setting screen.
As shown in Figure 5, the content that overtemperature Threshold screen display is shown comprises: work as prepass, passage, the temperature rise of this passage, keyboard input, channel selecting button and return push-button.
Particularly, refer to the passage that carries out the overtemperature Threshold when prepass, keyboard input is used for setting the numerical value of overtemperature threshold value, the channel selecting button comprise passage+and passage-, return push-button is for turning back to temperature display.
As shown in Figure 6, the historical point of overtemperature records the content that screen display shows and comprises: passage, temperature, return push-button and historical overtemperature point curve.
Particularly, for each passage, when overtemperature alarm is arranged, the thermograph of this passage is got off, form the historical overtemperature point curve of passages according to these temperature, return push-button is used for returning temperature display.
As shown in Figure 7, the content that the system parameter setting screen display is shown comprises: selection button backlight, and ACK button and set of time button, ACK button is used for confirmation to the setting of systematic parameter and enters temperature display.
can also comprise RS232 communication interface and node output interface on the second processor 32 of receiving end 3, by the RS232 communication interface, the second processor 32 can further be processed the temperature rise data transmission that calculates for host computer to host computer, can be positioned at by the node Output Interface Control warning of the loudspeaker in staff workshop, even the second processor 32 is judged temperature rise greater than predefined threshold value, can make the normally opened contact that is connected with loudspeaker closed, make loudspeaker and power connection, thereby make loudspeaker send chimes of doom, remind the staff to fix a breakdown.
It should be noted that at last: above each embodiment is not intended to limit only in order to technical scheme of the present invention to be described; Although with reference to aforementioned each embodiment, the present invention is had been described in detail, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme that aforementioned each embodiment puts down in writing, and perhaps some or all of technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the scope of various embodiments of the present invention technical scheme.

Claims (5)

1. a wireless temperature monitoring system, is characterized in that, comprising:
Transmitting terminal is used for monitoring the first temperature of monitored point, and the first temperature data is sent to receiving end;
The environment temperature monitoring side is used for monitoring the second temperature of monitored some environment of living in, and the second temperature data is sent to receiving end;
Receiving end is used for calculating described monitored temperature rise with respect to environment of living according to the first temperature and the second temperature, if described temperature rise during greater than predefined threshold value, is sent warning;
Described transmitting terminal is connected by wireless mode with described receiving end, and described environment temperature monitoring side is connected by wired mode with described receiving end.
2. wireless temperature monitoring system according to claim 1, is characterized in that, described transmitting terminal comprises:
Current transformer becomes voltage for the current transitions that will flow through monitored point;
Stabilized voltage supply is used for the voltage transition of described current transformer output is become the operating voltage of temperature sensor, first processor and transmitter module;
Temperature sensor is used for monitoring the first temperature of monitored point, and the first temperature data is sent to first processor;
First processor is used for gathering with the predefined time interval the first temperature of described temperature sensor output, and the first temperature data is sent to transmitter module;
Transmitter module is used for the first temperature data of described first processor output is sent to receiving end.
3. wireless temperature monitoring system according to claim 1 and 2, is characterized in that, described receiving end comprises:
The voltage transformation module, the voltage transformation that is used for the output of the accumulator on locomotive is the operating voltage of the second processor and receiver module;
Receiver module is used for receiving the first temperature data of transmitting terminal output, and exports to the second processor;
The second processor, be used for according to from the first temperature data of described receiver module with from the second temperature data of environment temperature monitoring side, calculate the temperature rise of monitored temperature with respect to environment of living in, if described temperature rise during greater than predefined threshold value, is sent warning.
4. wireless temperature monitoring system according to claim 3, is characterized in that, described receiving end also comprises the man-machine interaction screen, is used for showing temperature and the warning message of monitored point.
5. wireless temperature monitoring system according to claim 4, is characterized in that, described man-machine interaction screen also is used for log history overtemperature point, sets the overtemperature threshold value, systematic parameter is set.
CN2011103485725A 2011-11-07 2011-11-07 Wireless temperature monitoring system Pending CN103093596A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN2011103485725A CN103093596A (en) 2011-11-07 2011-11-07 Wireless temperature monitoring system
PCT/CN2012/077156 WO2013067816A1 (en) 2011-11-07 2012-06-19 Wireless temperature monitoring system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011103485725A CN103093596A (en) 2011-11-07 2011-11-07 Wireless temperature monitoring system

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WO (1) WO2013067816A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104354704A (en) * 2014-11-20 2015-02-18 南车株洲电力机车有限公司 Control method and system for locomotive running mode
CN106504461A (en) * 2016-10-21 2017-03-15 国网山东省电力公司泰安供电公司 A kind of electric fire monitoring device and method
CN112304360A (en) * 2019-08-02 2021-02-02 施耐德电器工业公司 Apparatus for measuring operating parameters of electronic device and measuring method thereof

Families Citing this family (2)

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Publication number Priority date Publication date Assignee Title
CN112304463B (en) * 2020-10-15 2024-05-31 国网福建省电力有限公司莆田供电公司 Cable joint temperature rise fault monitoring method and monitoring device based on temperature difference method
EP4098986A1 (en) * 2021-06-04 2022-12-07 MeshWorks Wireless Oy Configuring temperature monitoring operation of sensor device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020105435A1 (en) * 2001-02-02 2002-08-08 Yee David Moon Electric power meter including a temperature sensor and controller
CN200983198Y (en) * 2006-10-11 2007-11-28 杭州凯源电力科技有限公司 Online monitoring system of contact temperature increase
CN100533081C (en) * 2007-05-31 2009-08-26 淄博惠工仪器有限公司 Switch cabinet contact temperature monitoring and alarming system
CN201937244U (en) * 2010-09-20 2011-08-17 上海华建电力设备股份有限公司 Microcomputer motor protecting and monitoring device with wireless temperature measurement function

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09210799A (en) * 1996-01-31 1997-08-15 Hitachi Zosen Corp Wireless type temperature measuring system
CN201569508U (en) * 2009-11-05 2010-09-01 仇志海 Temperature rise monitoring and analyzing device of high-pressure equipment
CN201721347U (en) * 2010-04-27 2011-01-26 湖南双马电气有限公司 Electric control device of electric locomotive controller
CN201757678U (en) * 2010-07-29 2011-03-09 湖南电器研究所 Wireless temperature monitoring device
CN201909834U (en) * 2010-12-20 2011-07-27 河南鸿马实业有限公司 Wireless detection system for battery pack of electric police car

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020105435A1 (en) * 2001-02-02 2002-08-08 Yee David Moon Electric power meter including a temperature sensor and controller
CN200983198Y (en) * 2006-10-11 2007-11-28 杭州凯源电力科技有限公司 Online monitoring system of contact temperature increase
CN100533081C (en) * 2007-05-31 2009-08-26 淄博惠工仪器有限公司 Switch cabinet contact temperature monitoring and alarming system
CN201937244U (en) * 2010-09-20 2011-08-17 上海华建电力设备股份有限公司 Microcomputer motor protecting and monitoring device with wireless temperature measurement function

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104354704A (en) * 2014-11-20 2015-02-18 南车株洲电力机车有限公司 Control method and system for locomotive running mode
CN104354704B (en) * 2014-11-20 2017-01-18 南车株洲电力机车有限公司 Control method and system for locomotive running mode
CN106504461A (en) * 2016-10-21 2017-03-15 国网山东省电力公司泰安供电公司 A kind of electric fire monitoring device and method
CN106504461B (en) * 2016-10-21 2019-02-12 国网山东省电力公司泰安供电公司 A kind of electric fire monitoring device and method
CN112304360A (en) * 2019-08-02 2021-02-02 施耐德电器工业公司 Apparatus for measuring operating parameters of electronic device and measuring method thereof

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Application publication date: 20130508