CN111473871A - Terminal temperature monitoring system and electric energy meter - Google Patents
Terminal temperature monitoring system and electric energy meter Download PDFInfo
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- CN111473871A CN111473871A CN202010316608.0A CN202010316608A CN111473871A CN 111473871 A CN111473871 A CN 111473871A CN 202010316608 A CN202010316608 A CN 202010316608A CN 111473871 A CN111473871 A CN 111473871A
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- 238000009529 body temperature measurement Methods 0.000 abstract description 11
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- G—PHYSICS
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- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/10—Radiation pyrometry, e.g. infrared or optical thermometry using electric radiation detectors
- G01J5/20—Radiation pyrometry, e.g. infrared or optical thermometry using electric radiation detectors using resistors, thermistors or semiconductors sensitive to radiation, e.g. photoconductive devices
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/02—Constructional details
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- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/80—Calibration
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R11/00—Electromechanical arrangements for measuring time integral of electric power or current, e.g. of consumption
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
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Abstract
The invention discloses a terminal temperature monitoring system and an electric energy meter, which are used for improving the accuracy of terminal temperature measurement. The system comprises a photoelectric conversion module, a signal processing module and a display module which are connected in sequence; the photoelectric conversion module is used for receiving a first infrared signal sent by a terminal, converting the first infrared signal of the terminal into a voltage signal and sending the voltage signal; the signal processing module is used for determining the actual temperature value of the terminal according to the corresponding relation between the received voltage signal and the preset voltage temperature; and the display module is used for displaying the actual temperature value of the terminal. Through set up above-mentioned system in the electric energy meter, can solve among the prior art measurement terminal temperature cost higher, the lower problem of measurement accuracy.
Description
Technical Field
The invention relates to the technical field of intelligent monitoring, in particular to a terminal temperature monitoring system and an electric energy meter.
Background
With the development of the intelligent power grid, a new generation of modularized intelligent electric energy meter is produced, and due to the strong processing capacity and rich and optimized external resources, the market is rapidly promoted, compared with the old meter, the new generation of electric energy meter removes external weak current terminals, and simplifies external interfaces of the electric meter; the modular design is realized by adopting a pluggable functional module, the expansion function of the electric energy meter is improved, and meanwhile, the electric energy meter has an independent operating system and can realize functions of temperature measurement of the electric energy meter terminal, Bluetooth transmission and the like.
For the realization of the terminal temperature measurement function of the electric energy meter, the most common method in the prior art is to measure the temperature by a temperature sensor. However, in the actual operation process, there are several types of forms, for example, a temperature sensor is embedded in the terminal plastic housing, and the measured temperature of the terminal plastic housing is recorded as the terminal temperature; or the temperature sensor is embedded into the copper column of the terminal, and the measured temperature of the copper column is recorded as the temperature of the terminal.
However, the method has great difficulties and risks, if the temperature sensor is embedded in the terminal plastic shell for temperature measurement, firstly, the method is difficult to realize, and meanwhile, the temperature sensor is close to the external terminal and is easy to damage due to strong current impact to influence the detection of the terminal temperature; if the temperature sensor is embedded into the terminal copper column, the manufacturing process is difficult to realize, meanwhile, the performance requirement on the sensor is enhanced, the device cost is indirectly improved, and the method can easily cause the sensor device to be damaged due to external strong electric impact. In summary, no matter the method of embedding the temperature sensor into the terminal plastic housing for measuring the temperature or the method of embedding the temperature sensor into the terminal copper pillar for measuring the temperature has high requirements on the manufacturing process, the manufacturing cost is increased, and meanwhile, the temperature sensor is easily influenced by the external environment, so that the temperature sensor is damaged, and the accuracy of the temperature measurement result is difficult to ensure.
Disclosure of Invention
The invention provides a terminal temperature monitoring system and an electric energy meter, and solves the technical problems that in the prior art, the cost for measuring the terminal temperature is high, the terminal temperature is easily influenced by the external environment, and the accuracy of a temperature measurement result is difficult to ensure.
The invention provides a terminal temperature monitoring system, which is applied to an electric energy meter and comprises a photoelectric conversion module, a signal processing module and a display module which are sequentially connected;
the photoelectric conversion module is used for receiving a first infrared signal sent by a terminal, converting the first infrared signal of the terminal into a voltage signal and sending the voltage signal;
the signal processing module is used for determining the actual temperature value of the terminal according to the corresponding relation between the received voltage signal and the preset voltage temperature;
and the display module is used for displaying the actual temperature value of the terminal.
Optionally, the photoelectric conversion module comprises a plurality of light-gathering sheets, a plurality of photoresistors and a voltage measurement submodule;
the light-gathering sheet is used for gathering the first infrared signals sent by the terminal to obtain second infrared signals;
the photoresistor is used for receiving the second infrared signal;
and the voltage measuring submodule is used for measuring the voltage value of the photoresistor as the voltage signal and sending the voltage signal.
Optionally, the signal processing module includes a signal conversion sub-module and a temperature calibration sub-module;
the signal conversion submodule is used for receiving the voltage signal, calculating the average value of the voltage signal, and determining a first temperature value according to the corresponding relation between the average value of the voltage signal and the preset voltage temperature;
the temperature calibration submodule is used for receiving a first temperature value, acquiring the emissivity of the terminal, calibrating the first temperature value according to the emissivity of the terminal, and determining the actual temperature value of the terminal.
Optionally, the system further includes an external interface module and a central processing module;
the external interface module is used for sending the actual temperature value to the central processing module;
and the central processing module is used for receiving the actual temperature value and judging whether the actual temperature value is greater than a preset threshold value.
Optionally, the central processing module is further configured to output a warning signal when the actual temperature value is greater than a predetermined threshold value.
Optionally, the central processing module is further configured to send the actual temperature value to the display module when the actual temperature value is less than or equal to a predetermined threshold.
Optionally, the external interface module is further configured to provide electric energy for the signal processing module and the central processing module.
Optionally, the mode of displaying the actual temperature value of the terminal by the display module includes digital display and/or temperature curve display.
Optionally, the system further comprises a triggering module;
the triggering module is used for starting the photoelectric conversion module within a first preset time period when receiving a preset triggering signal;
judging whether the preset trigger signal is received or not in a second preset time period after the first preset time period is exceeded;
if the preset trigger signal is received in the second preset time period, continuing to start the photoelectric conversion module until the preset trigger signal is received again;
and if the preset trigger signal is not received within the second preset time period, stopping the starting of the photoelectric conversion module.
Further, the invention also provides an electric energy meter in a second aspect, which comprises a bottom shell, a terminal seat and the terminal temperature monitoring system in any one of the first aspect.
According to the technical scheme, the invention has the following advantages:
in the embodiment of the invention, the terminal temperature monitoring system is provided, according to the principle that an object emits infrared radiation all the time, the light-gathering sheet is arranged to gather the infrared radiation emitted by the terminal to the photosensitive resistor, so that the temperature of the terminal can be accurately detected according to the corresponding relation between the voltage and the temperature of the photosensitive resistor. Compared with the prior art, need not to consider that temperature sensor receives the environmental impact and leads to the lower problem of precision, need not to install devices such as temperature sensor inside the terminal moulds the shell or inside the terminal copper post simultaneously, only need with the suitable position of above-mentioned terminal temperature monitoring system fixed mounting in the drain pan of electric energy meter, can reach the purpose of the terminal temperature of monitoring electric energy meter, reduced use cost.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a block diagram of a terminal temperature monitoring system according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of an embodiment of an electric energy meter according to the present invention;
FIG. 3 is a circuit diagram of another embodiment of a terminal temperature monitoring system of the present invention;
fig. 4 is a partial flowchart of another alternative embodiment of a terminal temperature monitoring system according to the present invention.
Detailed Description
The embodiment of the invention provides a terminal temperature monitoring system, which is used for solving the technical problems that the cost for measuring the terminal temperature is high, the terminal temperature is easily influenced by the external environment and the accuracy of a temperature measurement result is difficult to ensure in the prior art.
In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the embodiments described below are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a diagram illustrating a terminal temperature monitoring system according to an embodiment of the present invention.
The invention provides a terminal temperature monitoring system, which comprises a photoelectric conversion module 101, a signal processing module 102 and a display module 103 which are connected in sequence;
the photoelectric conversion module 101 is configured to receive a first infrared signal sent by a terminal, convert the first infrared signal of the terminal into a voltage signal, and send the voltage signal;
the signal processing module 102 is configured to determine a temperature value of the terminal according to a corresponding relationship between the received voltage signal and a preset voltage temperature;
the display module 103 is configured to display a temperature value of the terminal;
in the embodiment of the present invention, a first infrared signal sent by a terminal may be received by the photoelectric conversion module 101, and after the first infrared signal is converted into a voltage signal in the photoelectric conversion module 101, the voltage signal is sent to the signal processing module 102; the signal processing module 102 finds a temperature value corresponding to the received voltage signal according to the received voltage signal and a preset voltage temperature corresponding relation; the determined temperature value is displayed by the display module 103. Since the voltage signal based on the signal processing module 102 is the first infrared signal sent by the terminal, the temperature value determined by the signal processing module 102 is the temperature value of the terminal at this time.
The voltage-temperature correspondence relationship may include a table in which the measured voltage of the photo resistor 1012 and the corresponding temperature are recorded, which is not limited in the embodiment of the present invention.
Further, the photoelectric conversion module 101, the signal processing module 102 and the display module 103 may be fixedly disposed by a connection manner of a card slot or a threaded post.
In a specific implementation, the photoelectric conversion module 101 may include a plurality of light-collecting sheets 1011, a plurality of light-sensitive resistors 1012, and a voltage measurement sub-module 1013.
The light-gathering sheet 1011 is used for gathering the first infrared signals sent by the terminal to obtain second infrared signals;
the photoresistor 1012 is used for receiving the second infrared signal;
the voltage measuring sub-module 1013 is configured to measure a voltage value of the photo resistor 1012 as the voltage signal, and send the voltage signal.
In another embodiment of the present invention, the light-gathering sheet 1011 may be disposed at a proper position between the photo-resistor 1012 and the terminal, the first infrared signal emitted from the terminal is gathered by the light-gathering sheet 1011 to obtain a focused second infrared signal, the focused second infrared signal is transmitted to the photo-resistor 1012, and the photo-resistor 1012 is connected to the voltage measuring sub-module 1013, and the voltage value of the photo-resistor 1012 is measured by the voltage measuring sub-module 1013 and transmitted to the signal processing module 102 as a voltage signal to execute the following steps.
The appropriate position may be a position where the first infrared signal emitted from the terminal can be focused on the photo-resistor 1012 through the light-focusing sheet 1011.
Alternatively, the photoelectric conversion module 101 may be disposed between each pair of terminal terminals, or the photoelectric conversion module 101 may be disposed at a rear position of each terminal.
Optionally, the signal processing module 102 includes a signal conversion sub-module 1021 and a temperature calibration sub-module 1022;
the signal conversion submodule 1021 is used for receiving the voltage signal, calculating an average value of the voltage signal, and determining a first temperature value according to the corresponding relation between the average value of the voltage signal and the preset voltage temperature;
the temperature calibration submodule 1022 is configured to receive a first temperature value, obtain an emissivity of the terminal, calibrate the first temperature value according to the emissivity of the terminal, and determine an actual temperature value of the terminal.
In another alternative embodiment of the present invention, the voltage signal may be received by the signal conversion sub-module 1021, and the average value of the voltage signal may be calculated to improve the accuracy of the detected voltage signal. Determining a first temperature value in a preset voltage-temperature corresponding relation; and receiving the first temperature value and the emissivity of the terminal through a temperature calibration unit, for example, determining an infrared radiation characteristic corresponding to a material of the terminal to serve as the emissivity of the terminal, and calibrating the first temperature value according to the emissivity of the terminal to determine an actual temperature value of the terminal.
In the process of voltage detection, the detection accuracy of the photoresistor 1012 may be affected due to the heating of the detection module, and to ensure the detection accuracy, the temperature calibration unit calibrates the first temperature value according to the emissivity of the terminal to determine the actual temperature value of the terminal, and the specific calibration method is not limited herein.
Optionally, the terminal temperature monitoring system further includes an external interface module 104 and a central processing module 105.
The external interface module 104 is configured to send the actual temperature value to the central processing module 105.
The central processing module 105 is configured to receive the actual temperature value, and determine whether the actual temperature value is greater than a predetermined threshold.
In the actual use process, it is often insufficient to detect the actual temperature of the terminal, and based on the consideration of the safety of the user, the external interface module 104 may send the temperature value corresponding to the average value of the voltage signal to the central processing module 105, and after the central processing module 105 receives the temperature value, it is determined whether the temperature value is greater than a predetermined threshold value, and it is determined whether an alarm signal needs to be output to inform the user that the current terminal temperature is abnormal.
Further, the central processing module 105 is further configured to output a warning signal when the actual temperature value is greater than a predetermined threshold value.
In an embodiment of the present invention, when the temperature value corresponding to the average value of the voltage signals is greater than the predetermined threshold, which indicates that the temperature value of the terminal at this time is abnormal, the central processing module 105 outputs an alarm signal, for example, by triggering a buzzer to send an alarm signal, and simultaneously performs event recording and remotely informs a user that the terminal is faulty, thereby improving the user safety.
Further, the central processing module 105 is further configured to send the actual temperature value to the display module 103 when the actual temperature value is less than or equal to a predetermined threshold value.
In another embodiment of the present invention, when the actual temperature value is less than or equal to the predetermined threshold, the central processing module 105 sends the actual temperature value of the terminal to the display module 103, and the display module 103 displays the current terminal temperature, so as to ensure that a user can accurately know the current terminal temperature during the use process, and further determine whether the terminal needs to be cooled, so as to ensure the accuracy of the terminal use.
In the embodiment of the present invention, the external interface module 104 is further configured to provide power to the signal processing module 102 and the central processing module 105.
In order to ensure the use reliability of the terminal temperature monitoring system, the external interface module 104 can be used for providing electric energy for the signal processing module 102 and the central processing module 105, so as to avoid the terminal temperature monitoring system from being damaged due to sudden power failure of the terminal in the use process, and improve the use reliability of the system.
In a specific implementation, the display module 103 displays the actual temperature value of the terminal in a digital display mode and/or a temperature curve display mode.
In an optional embodiment of the present invention, the display module 103 may display the temperature value of the terminal in a digital display manner, for example, simultaneously display the current time and the current temperature value of the terminal in a digital display manner; or the temperature value of the terminal is displayed in a temperature curve mode, for example, the terminal starting time is used as the origin time, and the temperature change trend of the terminal is displayed in a temperature curve mode, so that technicians can check and determine whether the temperature change of the terminal is abnormal or not; or simultaneously display the temperature value on the display module 103 by using the temperature curve and the digital display, for example, using the terminal start time as the origin time, displaying the temperature variation trend of the terminal in the temperature curve mode, and simultaneously displaying the temperature value corresponding to the current time in the display module 103, so as to prevent the user from being unable to accurately determine the current temperature value of the terminal due to the large scale span in the temperature curve display mode.
In a specific implementation of the present invention, the system further includes a triggering module 106;
the triggering module 106 is configured to start the photoelectric conversion module 101 within a first preset time period when receiving a preset triggering signal;
judging whether the preset trigger signal is received or not in a second preset time period after the first preset time period is exceeded;
if the preset trigger signal is received within the second preset time period, continuing to keep the photoelectric conversion module 101 started until the preset trigger signal is received again;
and if the preset trigger signal is not received within the second preset time period, stopping the starting of the photoelectric conversion module 101.
Referring to the program flow chart of the terminal temperature monitoring system shown in fig. 4, initializing the photoelectric conversion module, when the trigger module 106 receives a preset trigger signal, such as a pressing operation of a user, starting the photoelectric conversion module 101, starting to perform temperature monitoring of the terminal, entering a preset working module, and performing temperature monitoring of the terminal within a first preset time period based on consideration of usage cost; after the first preset time period is exceeded, whether the preset trigger signal is received again in the second preset time period is judged, if yes, the photoelectric conversion module 101 is continuously started until the preset trigger signal is received again; if the preset trigger signal is not received within the second preset time period, the starting of the photoelectric conversion module 101 is stopped, and the backlight screen is turned off. For example, the first preset time period may be set to 2 minutes, and the second preset time period may be set to 10 seconds, which is not limited in this embodiment of the present invention.
In the embodiment of the invention, a terminal temperature monitoring system is provided, wherein after a preset trigger signal is received, a photoelectric conversion module is started within a first preset time period, a first infrared signal of a terminal is received through a light-gathering sheet, and is gathered by the light-gathering sheet to generate a second infrared signal and send the second infrared signal to a photosensitive resistor; at the moment, the voltage measuring submodule detects the voltage value of the photoresistor and sends the voltage value to the signal processing submodule; after the signal processing submodule receives the voltage value, calculating a voltage average value, and determining a temperature value corresponding to the voltage average value; the temperature value is calibrated by the temperature calibration unit according to the emissivity of the terminal and then sent to the central processing module, and the central processing module judges whether the temperature value is greater than a preset threshold value; if the temperature value is larger than the preset threshold value, a warning signal can be output through the buzzer; if the temperature value is smaller than or equal to the preset threshold value, the temperature value is sent to a display module, and the display module can display the temperature value of the terminal in a digital display mode or a temperature curve display mode. After the first preset time period is exceeded, if a preset trigger signal is received in a second preset time period, continuing to start the photoelectric conversion module until the preset trigger signal is received again; and if the preset trigger signal is not received within the second preset time period, stopping the starting of the photoelectric conversion module. The technical problems that the cost for measuring the terminal temperature of the terminal is high, the terminal is easily influenced by the external environment and the accuracy of a temperature measurement result is difficult to guarantee in the prior art are solved, and the accuracy of terminal temperature measurement is improved.
Please refer to the schematic structural diagram of an electric energy meter in fig. 2, which at least includes a bottom case and a terminal base, and may further include any one of the terminal temperature monitoring systems mentioned above, after the terminal base is provided with a terminal, infrared radiation emitted by the terminal is converged onto a photo resistor through a light-gathering sheet, for example, infrared radiation is converged onto the photo resistor 1 through a L wire inlet terminal and a L wire outlet terminal, a voltage change value of the photo resistor 1 is detected through a signal processing module, and an actual temperature value corresponding to the photo resistor 1 is further determined, and is connected to a display module through an external interface module for displaying.
Detailed circuit implementation can be seen in fig. 3, and fig. 3 is a circuit diagram of a terminal temperature monitoring system according to an embodiment of the present invention. The first part is an actual circuit diagram of the photoelectric conversion module; the second part is an actual circuit diagram of the signal processing module; the third part is an actual circuit diagram of the external interface module; the first part, the second part, the third part and the display module are sequentially connected according to the corresponding pins, and meanwhile, power input is provided for the third part so as to provide power supply for the second part and the display module. The circuit is loaded on the PCB and fixed at a proper position in the bottom shell of the electric energy meter, and a trigger signal is applied, so that the terminal temperature of the electric energy meter can be monitored through the terminal temperature monitoring system.
In an embodiment of the present invention, an electric energy meter may be provided, in which a terminal is disposed on a terminal base of the electric energy meter, and the terminal temperature monitoring system is fixedly disposed in a bottom case by a threaded post or other fixing manner. When the electric energy meter receives a preset trigger signal, the photoelectric conversion module is started in a first preset time period, a first infrared signal of a terminal is received through the light-gathering sheet, and is gathered by the light-gathering sheet to generate a second infrared signal which is sent to the photosensitive resistor; at the moment, the voltage measuring submodule detects the voltage value of the photoresistor and sends the voltage value to the signal processing submodule; after the signal processing submodule receives the voltage value, calculating a voltage average value, and determining a temperature value corresponding to the voltage average value; the temperature value is calibrated by the temperature calibration unit according to the emissivity of the terminal and then sent to the central processing module, and the central processing module judges whether the temperature value is greater than a preset threshold value; if the temperature value is larger than the preset threshold value, a warning signal can be output through the buzzer; if the temperature value is smaller than or equal to the preset threshold value, the temperature value is sent to a display module, and the display module can display the temperature value of the terminal in a digital display mode or a temperature curve display mode. After the first preset time period is exceeded, if a preset trigger signal is received in a second preset time period, continuing to start the photoelectric conversion module until the preset trigger signal is received again; and if the preset trigger signal is not received within the second preset time period, stopping the starting of the photoelectric conversion module. The technical problems that the cost for measuring the terminal temperature of the terminal is high, the terminal is easily influenced by the external environment and the accuracy of a temperature measurement result is difficult to guarantee in the prior art are solved, and the accuracy of terminal temperature measurement is improved.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing embodiments of the apparatuses, and are not described herein again.
In the embodiments provided in the present invention, it should be understood that the disclosed system and apparatus may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to use all or part of the apparatus according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A terminal temperature monitoring system is applied to an electric energy meter and is characterized by comprising a photoelectric conversion module, a signal processing module and a display module which are sequentially connected;
the photoelectric conversion module is used for receiving a first infrared signal sent by a terminal, converting the first infrared signal of the terminal into a voltage signal and sending the voltage signal;
the signal processing module is used for determining the actual temperature value of the terminal according to the corresponding relation between the received voltage signal and the preset voltage temperature;
and the display module is used for displaying the actual temperature value of the terminal.
2. The system of claim 1, wherein the photoelectric conversion module comprises a plurality of light-gathering sheets, a plurality of photoresistors, and a voltage measurement sub-module;
the light-gathering sheet is used for gathering the first infrared signals sent by the terminal to obtain second infrared signals;
the photoresistor is used for receiving the second infrared signal;
and the voltage measuring submodule is used for measuring the voltage value of the photoresistor as the voltage signal and sending the voltage signal.
3. The system of claim 1 or 2, wherein the signal processing module comprises a signal conversion sub-module and a temperature calibration sub-module;
the signal conversion submodule is used for receiving the voltage signal, calculating the average value of the voltage signal, and determining a first temperature value according to the corresponding relation between the average value of the voltage signal and the preset voltage temperature;
the temperature calibration submodule is used for receiving a first temperature value, acquiring the emissivity of the terminal, calibrating the first temperature value according to the emissivity of the terminal, and determining the actual temperature value of the terminal.
4. The system of claim 1, further comprising an external interface module and a central processing module;
the external interface module is used for sending the actual temperature value to the central processing module;
and the central processing module is used for receiving the actual temperature value and judging whether the actual temperature value is greater than a preset threshold value.
5. The system of claim 4, wherein the central processing module is further configured to output a warning signal when the actual temperature value is greater than a predetermined threshold.
6. The system of claim 4, wherein the central processing module is further configured to send the actual temperature value to the display module when the actual temperature value is less than or equal to a predetermined threshold.
7. The system of claim 4, wherein the external interface module is further configured to provide power to the signal processing module and the central processing module.
8. The system according to claim 1, wherein the display module displays the actual temperature value of the terminal in a manner of digital display and/or temperature curve display.
9. The system of claim 1, further comprising a triggering module;
the triggering module is used for starting the photoelectric conversion module within a first preset time period when receiving a preset triggering signal;
judging whether the preset trigger signal is received or not in a second preset time period after the first preset time period is exceeded;
if the preset trigger signal is received in the second preset time period, continuing to start the photoelectric conversion module until the preset trigger signal is received again;
and if the preset trigger signal is not received within the second preset time period, stopping the starting of the photoelectric conversion module.
10. An electric energy meter comprising a bottom case and a terminal block, further comprising the terminal temperature monitoring system of any one of claims 1-9.
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