CN108151897B - Bus temperature measurement system and temperature measurement method - Google Patents
Bus temperature measurement system and temperature measurement method Download PDFInfo
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- CN108151897B CN108151897B CN201711483624.3A CN201711483624A CN108151897B CN 108151897 B CN108151897 B CN 108151897B CN 201711483624 A CN201711483624 A CN 201711483624A CN 108151897 B CN108151897 B CN 108151897B
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- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
Abstract
The application discloses generating line temperature measurement system and temperature measurement method, generating line temperature measurement system includes: the temperature monitoring module is used for measuring the temperature at the joint of the bus, generating a first digital signal, modulating the first digital signal to obtain a modulation signal, and coupling the modulation signal to the bus for output; the signal sending and receiving module is in communication connection with the temperature monitoring module and is used for receiving the modulation signal, demodulating the modulation signal to obtain a second digital signal containing a temperature value and transmitting the second digital signal to the monitoring end; and the monitoring end is in communication connection with the signal sending and receiving module and is used for comparing the temperature value with the first warning value and outputting a first alarm signal when the temperature value exceeds the first warning value. The bus temperature measuring method corresponds to the system. The invention adopts a power line carrier form, transmits the temperature measured by the temperature monitoring module to the monitoring end through the bus, integrates the communication line and the power line, does not need to erect a network again, and has low operating cost.
Description
Technical Field
The present disclosure relates generally to the field of power monitoring, and more particularly, to a bus temperature measurement system and a temperature measurement method.
Background
With the emergence of high-rise buildings and large-scale factories, the power consumption of various industries is rapidly increased, and the traditional cable cannot meet the requirement in the transmission of large current. The plug-in type bus duct is produced as a novel distribution electric conduction, and compared with the traditional cable, the plug-in type bus duct can fully embody the superiority of the cable in large current transmission. However, the bus duct is in a working environment with large current and high voltage for a long time, contact resistance of bus contact points and joints of each section can be increased due to aging, oxidation, looseness and the like, so that the temperature of the bus is increased, safety accidents such as electric leakage, fusing and the like are caused, even a fire disaster is caused, and therefore, the temperature monitoring of the bus duct is particularly important.
At present, the following schemes are mainly adopted for monitoring the temperature of the bus duct:
(1) an infrared temperature measurement technology comprises the following steps: the measuring range is big, the degree of accuracy is high, but with cable communication, need lay the cable to need the temperature measurement space, can't realize bus-bar equipment and temperature on-line measuring's integration, if the circuit breaks down can cause the temperature measurement on the large tracts of land circuit to become invalid.
(2) The fiber grating temperature measurement technology comprises the following steps: generally, optical fibers are adopted to transmit signals, the signals are easily subjected to surrounding environment and electromagnetic interference, more optical fibers need to be laid, the optical fiber wiring difficulty is high, the optical fibers have the characteristics of easiness in folding, easiness in breaking and no high temperature resistance, and if a circuit fails, temperature measurement failure on a large-area circuit can be caused.
(3) The wireless temperature measurement technology comprises the following steps: signal transmission is carried out by adopting a wireless communication technology, and due to distance limitation, a transfer node (repeater) is required to be arranged at a certain distance to amplify signals; the wireless signal is greatly influenced by the obstacles, and the signal is easy to attenuate; the service life of a power supply battery is mostly considered during wireless temperature measurement, and a time-base circuit (namely, the power is supplied to a system at intervals) is adopted, so that the service life of the battery is prolonged, but the function of collecting data in real time cannot be realized, and potential safety hazards exist.
Disclosure of Invention
In view of the above-mentioned drawbacks and deficiencies of the prior art, the present invention provides a bus temperature measurement system and a temperature measurement method.
In one aspect, the present invention provides a bus thermometry system, comprising:
the temperature monitoring module is used for measuring the temperature at the joint of the bus, generating a first digital signal, modulating the first digital signal to obtain a modulation signal, and coupling the modulation signal to the bus for output;
the signal sending and receiving module is in communication connection with the temperature monitoring module and is used for receiving the modulation signal, demodulating the modulation signal to obtain a second digital signal containing a temperature value and transmitting the second digital signal to the monitoring end;
the monitoring terminal is in communication connection with the signal sending and receiving module and is used for comparing the temperature value with a first alarm value and outputting a first alarm signal when the temperature value exceeds the first alarm value.
In another aspect, the present invention provides a bus temperature measurement method, including:
the method comprises the following steps: the temperature monitoring module measures the temperature of each temperature measuring point at the joint of the bus where the temperature monitoring module is located, generates a first digital signal, modulates the first digital signal to obtain a modulation signal, and couples the modulation signal to the bus for output;
step two: the signal sending and receiving module receives the modulation signal, demodulates the modulation signal to obtain a second digital signal containing a temperature value and transmits the second digital signal to the monitoring end;
step three: and the monitoring end compares the temperature value with a first alarm value, and outputs a first alarm signal when the temperature value exceeds the first alarm value.
According to the technical scheme, the temperature measured by the temperature monitoring module is transmitted to the monitoring end through the bus in a power line carrier communication mode, the communication line and the power line are integrated, a network does not need to be erected again, the communication accuracy is greatly improved, and the operation cost is low.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:
FIG. 1 is a schematic structural diagram of a bus thermometry system according to an embodiment of the present disclosure;
fig. 2 is a schematic structural diagram of a bus monitoring module in the bus temperature measurement system according to the embodiment of the present invention;
fig. 3 is a schematic structural diagram of a monitoring end in the bus temperature measurement system according to the embodiment of the present invention;
fig. 4 is a flowchart of a bus temperature measurement method according to an embodiment of the present invention.
Detailed Description
The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
The bus temperature measuring system provided by the invention is mainly used for monitoring the bus temperature at the bus duct, a pair of bus joints are arranged in the bus duct, each bus joint comprises three live wire conductive bars and one zero line conductive bar, and the temperature measuring point at the bus joint is preferably the contact point of a temperature sensor contacting each conductive bar.
As shown in fig. 1, the bus thermometry system provided by the invention includes a plurality of temperature monitoring modules 1, a signal sending and receiving module 2 and a monitoring terminal 3.
The temperature monitoring module 1 is arranged at the bus duct and used for measuring the temperature at the bus joint, generating a first digital signal, modulating the first digital signal to obtain a modulation signal, and coupling the modulation signal to the bus for output;
the signal sending and receiving module 2 is in communication connection with the temperature monitoring module 1 and is used for receiving the modulation signal, demodulating the modulation signal to obtain a second digital signal containing a temperature value and transmitting the second digital signal to the monitoring terminal 3;
and the monitoring end 3 is in communication connection with the signal sending and receiving module 2 and is used for comparing the temperature value with the first alarm value and outputting a first alarm signal when the temperature value exceeds the first alarm value.
The temperature monitoring module is arranged at the bus duct, the temperature of each temperature measuring point at the bus joint is measured, a DBPSK digital modulation and demodulation mode is preferably adopted for transmission, a modulation signal is directly loaded on a bus through a power line carrier transmission mode, compared with wireless communication, a communication line does not need to be re-arranged, and the temperature monitoring module has the advantages of being high in sensitivity, reliable in communication, strong in anti-interference capability, long in communication distance and the like.
As an embodiment, as shown in fig. 2, the temperature monitoring module 1 includes:
the temperature acquisition module 11 comprises at least two temperature sensors and is used for measuring the temperature of each temperature measuring point at the joint of the bus;
the processing module 12 is used for periodically acquiring the temperature from the temperature acquisition module 11, generating a first digital signal and outputting the first digital signal;
the power line carrier communication module 13 is in communication connection with the processing module 12, and is configured to receive the first digital signal, modulate the first digital signal to obtain a modulated signal, couple the modulated signal to a bus for transmission, and preferably adopt a DBPSK modulation mode; and the number of the first and second groups,
and the power supply module 14 is connected with the temperature acquisition module 11, the processing module 12 and the power line carrier communication module 13, and is used for supplying power to the temperature monitoring module 11, the processing module 12 and the power line carrier communication module 13.
Further, the processing module 12 includes a single chip microcomputer, such as an STM8 single chip microcomputer, a 51 single chip microcomputer, and the like. The processing module comprises a singlechip, and an A/D conversion circuit is arranged on the singlechip; or the processing module comprises a singlechip and an A/D conversion circuit arranged on the periphery of the singlechip.
The power line carrier communication module comprises an ES1642-NC carrier module and an external coupling circuit, wherein the ES1642-NC carrier module comprises a carrier communication chip, a receiving filter circuit, a transmitting amplifying circuit and a current limiting circuit; the carrier communication chip is preferably an SSC1642 chip, receives the first digital signal transmitted by the processing module, and modulates the first digital signal into a modulation signal; the modulation signal is subjected to driving amplification and filtering processing through a transmitting amplification filtering circuit; and coupling the amplified and filtered modulation signal to the power bus through an external coupling circuit. The maximum current of the transmitting amplifying filter circuit can be consumption limited through the current limiting circuit. In addition, the receiving filter circuit in the ES1642-NC carrier module is used for carrying out filter processing on the signals introduced from the bus.
In this application, each temperature measuring point is a contact point at which the temperature sensor contacts each conductive bar of the bus bar joint. The temperature monitoring module is arranged at the bus duct, and the corresponding solid structure is a temperature measuring device arranged at the bus duct and comprises a shell, a temperature measuring circuit board arranged in the shell and a plurality of temperature sensors connected with the temperature measuring circuit board; the temperature measuring circuit board is also connected with a cylinder which comprises a first cylinder which is contacted with a live wire conducting bar and can conduct electricity and a second cylinder which is contacted with a zero line conducting bar. For example, the first column and the second column obtain 220V alternating current from a bus, and the power supply module comprises an alternating current-to-direct current step-down conversion circuit for converting the 220V alternating current into 12V direct current; the first voltage reduction circuit is connected with the alternating current-to-direct current voltage reduction conversion circuit and converts the 12V direct current into 5V direct current; and the second voltage reduction circuit is connected with the first voltage reduction circuit and converts the 5V direct current into 3.3V direct current. The power line carrier communication module is powered by the first voltage reduction circuit, and the singlechip and the temperature sensor are powered by the second voltage reduction circuit.
As an optional implementation manner, the temperature measuring circuit board is connected with a plurality of columns, and each column is a hollow column with one open end; the plurality of columns correspond to the plurality of temperature sensors one by one, and the temperature sensors are fixedly arranged in the columns.
Preferably, 8 temperature sensors are arranged, the first column body and the second column body are used for taking electricity, the temperature sensors in the two column bodies are used for measuring the temperature of the corresponding conductive bar, and the temperature sensors fixedly arranged in the other six column bodies are used for measuring the temperature of the corresponding conductive bar.
The temperature sensors perform contact type measurement, each temperature sensor has a corresponding IP number, each single chip microcomputer has a corresponding address code, and the temperature measured by each temperature sensor has a corresponding address code, wherein the first digital signal comprises the temperature of a temperature measuring point and the address code corresponding to the temperature, and the address code comprises the address code of the single chip microcomputer and the IP number of the temperature sensor; correspondingly, the demodulated second digital signal contains the address code of the temperature measuring point and the temperature value measured at the temperature measuring point. The processing module acquires the temperature value from the temperature acquisition module periodically, generates and outputs a first digital signal, and the monitoring end receives a second digital signal periodically and updates the temperature value at the same temperature measurement point periodically.
Further, the signal transmitting and receiving module comprises: and the carrier machine is used for receiving the modulation signal output by the coupling on the bus and demodulating the modulation signal to obtain a second digital signal and transmitting the second digital signal to the monitoring end.
As an embodiment, as shown in fig. 3, the monitoring terminal 3 includes:
a receiving module 31, configured to receive the second digital signal;
a database 32 for storing the second digital signal and a preset first alarm value;
the display module 33 is configured to display a temperature value included in the second digital signal;
and the control module 34 is used for comparing the temperature value with the first alarm value, and outputting a first alarm signal when the temperature value exceeds the first alarm value.
As an implementation manner, the database is further configured to store a preset first warning value, where the first warning value is smaller than the first warning value;
the control module is also used for comparing the temperature value with the first early warning value and the first warning value, and outputting a first early warning signal when the temperature value exceeds the first early warning value and is smaller than the first warning value.
For example, when monitoring the temperature of the bus duct, the temperature value obtained from the temperature monitoring module is compared with the first early warning value and the first warning value. When the temperature value is higher than the first warning value, the control module generates a first alarm signal to prompt a worker to check the temperature state of the bus duct where the temperature measuring point is located on site; when the temperature value is between the first early warning value and the first warning value, the control module generates a first early warning signal to prompt a worker to keep track of the temperature state of the temperature measuring point at the monitoring end.
In order to monitor the temperature more effectively and intelligently, the amplification of the temperature at each temperature measuring point is monitored.
As an embodiment, the monitoring terminal 3 further includes: the central processing module 35 is configured to calculate a temperature difference between a current temperature value at a temperature measurement point and a last temperature value at the temperature measurement point when the receiving module obtains the temperature value at the temperature measurement point;
the database is also used for storing a preset second warning value;
the control module is also used for comparing the temperature difference value with a second alarm value, and outputting a second alarm signal when the temperature difference value exceeds the second alarm value.
As an implementation manner, the database is further configured to store a preset second warning value, where the second warning value is smaller than the second warning value;
the control module is also used for comparing the temperature difference value with the second early warning value and the second warning value, and outputting a second early warning signal when the temperature difference value exceeds the second early warning value and is smaller than the second warning value.
For example, in the temperature measurement method provided by the invention, temperature values are periodically obtained from each temperature measurement point of the bus duct, the temperature difference between the temperatures measured at the two times before and after one temperature measurement point is calculated to represent the change trend or the amplification of the temperature at the temperature measurement point, and when the temperature difference is greater than a second alarm value, the control module generates a second alarm signal to prompt a worker to check the temperature state of the bus duct where the temperature measurement point is located on site; and when the temperature difference value is between the second early warning value and the second warning value, prompting the staff to keep track of the temperature state of the temperature measuring point at the monitoring end.
As an embodiment, the first warning signal, the first pre-warning signal, the second warning signal, and the second pre-warning signal may take any form that is known to a user.
Further, the display module comprises a display screen;
the control module transmits the first alarm signal or the first early warning signal to the display module, and the display screen displays alarm information corresponding to the first alarm signal or the first early warning signal;
and/or the control module transmits the second alarm signal or the second early warning signal to the display module, and the display screen displays alarm information corresponding to the second alarm signal or the second early warning signal. For example, the alarm information corresponding to the first alarm signal is preferably a first picture, the alarm information corresponding to the first warning signal is preferably a second picture, the alarm information corresponding to the second alarm signal is preferably a third picture, and the alarm information corresponding to the second warning signal is preferably a fourth picture.
For example, taking monitoring the temperature value of a certain temperature measuring point as an example, when no picture is displayed/played on the display screen in turn, the temperature value at the temperature measuring point is within a normal range; when the temperature measuring point sends out a first alarm signal, displaying/broadcasting a first picture on a display screen in turn; when the first early warning signal occurs at the temperature measuring point, displaying/broadcasting a second picture on the display screen in turn; when a second alarm signal occurs at the temperature measuring point, displaying/broadcasting a third picture on the display screen in turn; and when a second early warning signal occurs at the temperature measuring point, displaying/broadcasting a fourth picture on the display screen in turn.
When the first alarm signal and/or the second alarm signal are/is generated, a worker is prompted to go to a field environment to check the temperature state of the bus duct where the temperature measuring point is located.
Furthermore, the monitoring end is also used for transmitting the first alarm signal and/or the second alarm signal to the signal transmitting and receiving module and transmitting the first alarm signal and/or the second alarm signal to the temperature monitoring module through the power bus;
the first alarm signal and/or the second alarm signal are/is an indicator light signal which can trigger two buzzing sounds with different frequencies and/or can trigger two colors of flashing or long-lighting at the temperature monitoring module respectively.
When the control module sends out the first alarm signal or the second alarm signal, the control module prompts a worker to check the temperature state of the bus duct which sends out the alarm signal on site. For example, the first alarm signal and the second alarm signal may be signals that can trigger two buzzes with different frequencies and easily distinguished by workers, or signals that can trigger indicator lights with two colors, such as a yellow light and a red light, that blink or brighten on the outer surface of the housing of the temperature measuring device corresponding to the temperature monitoring module, or signals that can trigger the buzzes and the indicator lights at the same time.
As an optional implementation manner, the monitoring end further includes:
the GIS management module, the database and the display module are used for displaying the geographical position information of the power supply circuit among the temperature measuring points and the distribution relation of the temperature measuring points on the address position information by using an online map technology and checking the temperature values of the temperature measuring points;
and the authority control module is used for receiving a user name and a password of the user access monitoring terminal and checking the temperature value of each temperature measuring point when the user name and the password are correct.
Optionally, based on the GIS management module and the display module, the first warning signal, the first early warning signal, the second warning signal, and the second early warning signal are not limited to the above-described displayed/carousel picture, and may also be presented in other forms. For example, when the temperature values on the display screen are all in black fonts, the temperature values are all normal; when a first alarm signal is sent out at a certain temperature measuring point, the temperature value at the position is displayed in a red font; when the first early warning signal occurs at the temperature measuring point, the temperature value at the temperature measuring point is displayed in an orange font; when a second alarm signal occurs at the temperature measuring point, the temperature value at the position flickers at high frequency; when a second early warning signal occurs at the temperature measuring point, the temperature value at the position flickers at low frequency.
Referring to fig. 4, a flowchart of a bus temperature measurement method according to an embodiment of the present invention is shown, where the bus temperature measurement method includes:
step S1: the temperature monitoring module measures the temperature of each temperature measuring point at the joint of the bus to generate a first digital signal, modulates the first digital signal to obtain a modulation signal, couples the modulation signal to the bus for output, and preferably adopts a DBPSK digital modulation and demodulation mode for transmission;
step S2: the signal sending and receiving module receives the modulation signal, demodulates the modulation signal to obtain a second digital signal containing a temperature value and transmits the second digital signal to the monitoring end;
step S3: the monitoring end compares the temperature value with the first warning value, and outputs a first alarm signal when the temperature value exceeds the first warning value.
Preferably, step S1 of the bus bar temperature measurement method includes:
step S10: the temperature acquisition module measures the temperature of each temperature measurement point at the joint of the bus and comprises at least two temperature sensors;
step S11: the processing module acquires the temperature from the temperature acquisition module periodically, generates and outputs a first digital signal;
step S12: the power line carrier communication module receives the first digital signal, modulates the first digital signal to obtain a modulation signal, and couples the modulation signal to the bus for transmission.
Preferably, step S2 of the bus bar temperature measurement method includes:
and the carrier machine receives the modulation signal output by the coupling on the bus and demodulates the modulation signal to obtain a second digital signal and transmits the second digital signal to the monitoring end.
As a preferred embodiment, step S3 includes:
the receiving module receives a second digital signal, wherein the second digital signal comprises a temperature value;
the control module compares the temperature value with the first warning value, and outputs a first alarm signal when the temperature value exceeds the first warning value.
As a preferable scheme, the step S3 may further include:
the control module compares the temperature value with the first early warning value and the first warning value, and outputs a first early warning signal when the temperature value exceeds the first early warning value and is smaller than the first warning value.
As a preferable scheme, the step S3 may further include:
when the receiving module acquires a temperature value at a certain temperature measuring point, the central processing module calculates a temperature difference value between a current temperature value at the temperature measuring point and a last temperature value at the temperature measuring point;
the control module compares the temperature difference value with a second alarm value, and outputs a second alarm signal when the temperature difference value exceeds the second alarm value.
As a preferable scheme, the step S3 may further include:
and the central processing module compares the temperature difference with the second early warning value and the second warning value, and outputs a second early warning signal when the temperature difference exceeds the second early warning value and is less than the second warning value.
As an alternative embodiment, the display module includes a display screen;
the control module transmits the first alarm signal or the first early warning signal to the display module, and the display screen displays alarm information corresponding to the first alarm signal or the first early warning signal;
and/or the control module transmits the second alarm signal or the second early warning signal to the display module, and the display screen displays alarm information corresponding to the second alarm signal or the second early warning signal.
As an optional implementation manner, the monitoring end transmits the first alarm signal and/or the second alarm signal to the signal sending and receiving module, and transmits the first alarm signal and/or the second alarm signal to the temperature monitoring module through the power bus;
the first alarm signal and/or the second alarm signal are/is an indicator light signal which can trigger two buzzing sounds with different frequencies and/or can trigger two colors of flashing or long-lighting at the temperature monitoring module respectively.
The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by those skilled in the art that the scope of the invention herein disclosed is not limited to the particular combination of features described above, but also encompasses other arrangements formed by any combination of the above features or their equivalents without departing from the inventive concept. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.
Claims (9)
1. A bus thermometry system, comprising:
the temperature monitoring module is used for measuring the temperature at the joint of the bus, generating a first digital signal, modulating the first digital signal to obtain a modulation signal, and coupling the modulation signal to the bus for output;
the signal sending and receiving module is in communication connection with the temperature monitoring module and is used for receiving the modulation signal, demodulating the modulation signal to obtain a second digital signal containing a temperature value and transmitting the second digital signal to the monitoring end;
the monitoring end is in communication connection with the signal sending and receiving module and is used for comparing the temperature value with a first alarm value and outputting a first alarm signal when the temperature value exceeds the first alarm value;
wherein the temperature monitoring module comprises:
the temperature acquisition module comprises at least two temperature sensors and is used for measuring the temperature of each temperature measuring point at the bus joint;
the processing module is used for acquiring the temperature from the temperature acquisition module periodically, generating a first digital signal and outputting the first digital signal;
the power line carrier communication module is in communication connection with the processing module and is used for receiving the first digital signal, modulating the first digital signal to obtain a modulation signal, and coupling the modulation signal to a bus for transmission; and the number of the first and second groups,
the power supply module is connected with the temperature acquisition module, the processing module and the power line carrier communication module and used for supplying power to the temperature monitoring module, the processing module and the power line carrier communication module;
the signal transmitting and receiving module comprises: the carrier machine is used for receiving the modulation signal output by the coupling on the bus and demodulating the modulation signal to obtain the second digital signal and transmitting the second digital signal to the monitoring end; the monitoring end comprises:
a receiving module, configured to receive the second digital signal;
the database is used for storing the second digital signal and the preset first alarm value;
the display module is used for displaying the temperature value contained in the second digital signal;
the control module is used for comparing the temperature value with the first alarm value and outputting a first alarm signal when the temperature value exceeds the first alarm value;
the monitoring terminal further comprises: the central processing module is used for calculating a temperature difference value between the current temperature value at a certain temperature measuring point and the last temperature value at the temperature measuring point when the receiving module obtains the temperature value at the certain temperature measuring point;
the database is also used for storing a preset second warning value;
the control module is further used for comparing the temperature difference value with the second alarm value, and outputting a second alarm signal when the temperature difference value exceeds the second alarm value;
the power module comprises a conductive first column body at the joint of the power module and a live wire row and a conductive second column body at the joint of the power module and a zero wire row; the temperature acquisition module comprises temperature sensors positioned in a plurality of cylinders, and the plurality of cylinders comprise the first cylinder and the second cylinder.
2. The bus bar thermometry system of claim 1,
the database is also used for storing a preset first early warning value, and the first early warning value is smaller than the first warning value;
the control module is further configured to compare the temperature value with the first warning value and the first warning value, and output a first warning signal when the temperature value exceeds the first warning value and is less than the first warning value.
3. The bus bar thermometry system of claim 2,
the database is also used for storing a preset second early warning value, and the second early warning value is smaller than the second warning value;
the control module is further configured to compare the temperature difference with the second warning value and the second warning value, and output a second warning signal when the temperature difference exceeds the second warning value and is less than the second warning value.
4. The bus bar thermometry system of claim 3,
the display module comprises a display screen;
the first alarm signal comprises a first picture displayed/broadcast in turn;
the first early warning signal comprises a second picture displayed/broadcast in turn;
the second alarm signal comprises a third picture of display/carousel;
the second warning signal comprises a fourth picture of display/carousel.
5. The bus temperature measurement system according to claim 3, wherein the monitoring terminal is further configured to transmit the first alarm signal and/or the second alarm signal to the signal sending and receiving module, and to the temperature monitoring module via a bus;
the first alarm signal and/or the second alarm signal are/is an indicator light signal which can trigger two buzzing sounds with different frequencies and/or can trigger two colors of flashing or long-lighting at the temperature monitoring module respectively.
6. The bus thermometry system of claim 1, wherein the monitoring end further comprises:
the GIS management module is used for displaying the geographical position information of the power supply circuit among the temperature measuring points and the distribution relation of the temperature measuring points on the address position information by using an online map technology and checking the temperature values of the temperature measuring points;
and the authority control module is used for receiving a user name and a password of the user access monitoring terminal and checking the temperature value of each temperature measuring point when the user name and the password are correct.
7. A bus temperature measurement method is characterized by comprising the following steps:
the method comprises the following steps: the temperature monitoring module measures the temperature of each temperature measuring point at the joint of the bus to generate a first digital signal, modulates the first digital signal to obtain a modulation signal, and couples the modulation signal to the bus for output;
step two: the signal sending and receiving module receives the modulation signal, demodulates the modulation signal to obtain a second digital signal containing a temperature value and transmits the second digital signal to the monitoring end;
step three: the monitoring end compares the temperature value with a first alarm value, and when the temperature value exceeds the first alarm value, a first alarm signal is output;
wherein, the first step comprises:
the temperature acquisition module measures the temperature of each temperature measurement point at the bus joint and comprises at least two temperature sensors;
the processing module acquires the temperature from the temperature acquisition module periodically, generates a first digital signal and outputs the first digital signal;
the power line carrier communication module receives the first digital signal, modulates the first digital signal to obtain a modulation signal, and couples the modulation signal to a bus for transmission;
the second step comprises the following steps:
the carrier machine receives the modulation signal output by the coupling on the bus and demodulates the modulation signal to obtain a second digital signal and transmits the second digital signal to the monitoring end;
the third step comprises:
the receiving module receives the second digital signal, wherein the second digital signal comprises a temperature value;
the control module compares the temperature value with the first alarm value, and outputs a first alarm signal when the temperature value exceeds the first alarm value;
when the receiving module acquires the temperature value at a certain temperature measuring point, the central processing module calculates the temperature difference between the current temperature value at the temperature measuring point and the last temperature value at the temperature measuring point;
the control module compares the temperature difference value with a second alarm value, and outputs a second alarm signal when the temperature difference value exceeds the second alarm value;
the third step further comprises:
the control module compares the temperature value with a first early warning value and the first warning value, and outputs a first early warning signal when the temperature value exceeds the first early warning value and is smaller than the first warning value;
the third step further comprises:
the control module compares the temperature difference value with a second early warning value and the second warning value, and outputs a second early warning signal when the temperature difference value exceeds the second early warning value and is smaller than the second warning value.
8. The method of bus bar thermometry according to claim 7,
the display module comprises a display screen;
the control module transmits a first alarm signal or a first early warning signal to the display module, and the display screen displays alarm information corresponding to the first alarm signal or the first early warning signal;
and/or the control module transmits a second alarm signal or a second early warning signal to the display module, and the display screen displays alarm information corresponding to the second alarm signal or the second early warning signal.
9. The bus temperature measurement method according to claim 8, wherein the monitoring terminal transmits the first alarm signal and/or the second alarm signal to the signal sending and receiving module and transmits the first alarm signal and/or the second alarm signal to the temperature monitoring module through a bus;
the first alarm signal and/or the second alarm signal are/is an indicator light signal which can trigger two buzzing sounds with different frequencies and/or can trigger two colors of flashing or long-lighting at the temperature monitoring module respectively.
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| CN110031120B (en) * | 2019-05-24 | 2024-03-05 | 马克威尔(广州)电气有限公司 | Bus temperature measuring device |
| CN112834073A (en) * | 2019-11-08 | 2021-05-25 | 李志鹏 | Temperature real-time monitoring device, method and system |
| CN113542925A (en) * | 2021-06-21 | 2021-10-22 | 南京绿电智联科技有限公司 | Transmission system and transmission method for transmitter signal power information |
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| WO2012062022A1 (en) * | 2010-11-11 | 2012-05-18 | 浙江图维电力科技有限公司 | On-line detection device for inner temperature of power cable joint based on radio frequency technology and method thereof |
| CN105371984A (en) * | 2014-08-28 | 2016-03-02 | 华北电力大学（保定） | Bus temperature monitoring system |
| CN105321316A (en) * | 2014-11-04 | 2016-02-10 | 武汉理工大学 | Transformer substation bus intelligent temperature measuring system with wireless networking function |
| CN205209644U (en) * | 2015-11-12 | 2016-05-04 | 江苏威腾母线有限公司 | Hierarchical alarm device of generating line temperature |
| CN205506231U (en) * | 2016-03-31 | 2016-08-24 | 李念龙 | Support cable joint temperature measuring device of generating line power supply |
| CN205642672U (en) * | 2016-05-18 | 2016-10-12 | 云南电网有限责任公司昆明供电局 | A wireless temperature measuring device for $monitoring circuit breaker contact arm contact temperature |
| CN206146555U (en) * | 2016-09-19 | 2017-05-03 | 深圳市惠程电气股份有限公司 | Tubular busbar junction temperature monitored control system |
| CN106959653A (en) * | 2017-05-22 | 2017-07-18 | 东华大学 | A kind of bus humiture real-time monitoring system |
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