CN219736620U - Cable temperature monitoring device - Google Patents
Cable temperature monitoring device Download PDFInfo
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- CN219736620U CN219736620U CN202321002310.8U CN202321002310U CN219736620U CN 219736620 U CN219736620 U CN 219736620U CN 202321002310 U CN202321002310 U CN 202321002310U CN 219736620 U CN219736620 U CN 219736620U
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- 238000012806 monitoring device Methods 0.000 title claims abstract description 22
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- 238000004806 packaging method and process Methods 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 abstract description 4
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- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 3
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- 229910052804 chromium Inorganic materials 0.000 description 3
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- 238000010586 diagram Methods 0.000 description 3
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Abstract
The utility model discloses a cable temperature monitoring device, which comprises a temperature acquisition unit, wherein the three temperature acquisition units are respectively connected with one temperature monitoring unit through data acquisition lines in a communication way; the temperature acquisition unit is fixedly connected with the cable to be monitored; the temperature monitoring unit is fixed on a plane through a monitoring unit fixing piece; the temperature acquisition unit comprises a temperature sensor, a sensor assembly and a cable connector; the temperature sensor is arranged in the sensor assembly and extends out of the sensor assembly to be in contact with a cable to be monitored; the cable connector fixedly connects the temperature sensor with the sensor assembly. The beneficial effects are as follows: the cable overheat detection device is convenient to use, reasonable in structure, capable of timely finding out overheat condition of the cable, predicting cable fault risk, relatively few in components, low in manufacturing cost and easy to maintain in the later period.
Description
Technical Field
The utility model relates to the field of electric power, in particular to a cable temperature monitoring device.
Background
The cable heats up during operation. When current passes through the three-phase cable, electrical energy is converted to thermal energy due to the electrical resistance of the cable, resulting in the cable itself generating some heat. This heat is normal and necessary.
However, if the heat generated during the operation of the three-phase cable exceeds the range that the cable can withstand, problems such as cable aging and insulation breakage can be caused, and even fire hazards can be caused. Therefore, when designing and using the three-phase cable, factors such as rated current, cable materials, cable laying mode and the like of the cable need to be considered so as to ensure that the cable can normally dissipate heat during working and avoid overheating.
The temperature of the cable can be monitored in the present art. One common cable temperature monitoring technique is to monitor the cable in real time using a temperature sensor. The sensor can be directly arranged on the surface of the cable, and the temperature condition inside the cable can be estimated by measuring the temperature change of the surface of the cable. The sensor can transmit measurement data to the data acquisition system, so that the monitoring and recording of the cable temperature are realized. However, the components are more, the collected data often needs to be presented by a computer, and the manufacturing cost is higher.
In addition, there are advanced techniques for monitoring cable temperature without touching the cable surface, such as thermal infrared imager techniques. The technology can measure the temperature of the cable surface by sensing infrared radiation, and display the measured result on a screen of a thermal imager, so as to realize contactless monitoring of the cable temperature. However, this technique has a problem that measurement is not accurate enough and is easily disturbed by the external environment, in addition to the above-described problems.
Disclosure of Invention
The utility model aims to provide the cable temperature monitoring device which is convenient to use, reasonable in structure, capable of timely finding out the overheat condition of a cable, predicting the fault risk of the cable, relatively less in components, low in manufacturing cost and low in cost and is easy to maintain in the later period.
The utility model is realized by the following technical scheme:
the utility model relates to a cable temperature monitoring device, which comprises a temperature acquisition unit, wherein the three temperature acquisition units are respectively in communication connection with one temperature monitoring unit through a data acquisition line; the temperature acquisition unit is fixedly connected with the cable to be monitored; the temperature monitoring unit is fixed on a plane through a monitoring unit fixing piece; the temperature acquisition unit comprises a temperature sensor, a sensor assembly and a cable connector; the temperature sensor is arranged in the sensor assembly and extends out of the sensor assembly to be in contact with a cable to be monitored; the cable connector fixedly connects the temperature sensor with the sensor assembly.
The sensor assembly comprises a protective shell, a connector and a cable; the temperature sensor is electrically connected with the connector, and the connector is in communication connection with the temperature monitoring unit through a data acquisition line; and one part of the temperature sensor and the connector is arranged inside the protective shell, and the other part of the temperature sensor and the connector respectively extend out of the protective shell.
The cable temperature monitoring device comprises a cable connector, a cable sensor and a temperature sensor, wherein the cable connector comprises a U-shaped buckle, a connecting pin and a fastening screw; the two connecting pins are respectively and vertically fixedly connected to two opposite side surfaces of the sensor assembly; two ends of the U-shaped buckle are detachably and fixedly connected with the connecting pin respectively; a threaded hole is formed in the U-shaped bottom of the U-shaped buckle, a threaded rod is assembled in the threaded hole, a flexible gasket is arranged at one end of the threaded rod, and a tightening handle is arranged at the other end of the threaded rod;
or, the cable connector comprises two semicircular buckles, wherein one semicircular buckle is fixedly connected with the sensor assembly, and the two semicircular buckles are detachably and fixedly connected with each other through fastening bolts.
The cable temperature monitoring device comprises a temperature monitoring unit and a temperature monitoring unit, wherein the temperature monitoring unit comprises a packaging shell and a temperature indicator lamp; three temperature indicator lamps are arranged outside the packaging shell; the temperature sensor is electrically connected with the signal processing module, the signal processing module is electrically connected with the microprocessor, and the battery is electrically connected with the microprocessor and the signal processing module respectively; the three temperature indicating lamps are respectively and electrically connected with the microprocessor.
The signal processing module comprises a signal amplifying circuit and a filter circuit.
In the above cable temperature monitoring device, the package housing has a semicircular cylindrical shape or a box shape.
The above-mentioned cable temperature monitoring device, the above-mentioned microprocessor still is connected with the buzzer electricity.
In the above-mentioned cable temperature monitoring device, the above-mentioned monitoring unit fixing piece is set in the bottom of the temperature monitoring unit; the monitoring unit fixing piece is a magnet plate or a sucker.
The utility model has the beneficial effects that: the cable overheat detection device is convenient to use, reasonable in structure, capable of timely finding out overheat condition of the cable, predicting cable fault risk, relatively few in components, low in manufacturing cost and easy to maintain in the later period.
Drawings
Fig. 1: a schematic perspective structure of embodiment 1 of the present utility model;
fig. 2: another schematic three-dimensional structure of embodiment 1 of the present utility model;
fig. 3: a schematic perspective structure of embodiment 2 of the present utility model;
fig. 4: a schematic perspective structure of embodiment 3 of the present utility model;
fig. 5: the three-dimensional structure schematic diagram of the temperature monitoring unit is provided;
fig. 6: the use state reference diagram of the utility model;
fig. 7: the circuit connection schematic diagram of the utility model;
in the figure: 1-temperature acquisition unit, 2-temperature monitoring unit, 3-monitoring unit mounting, 4-data acquisition line, A-cable, 11-temperature sensor, 12-sensor subassembly, 13-cable connector, 21-encapsulation shell, 22-temperature indicator lamp.
Detailed Description
The utility model is further described with reference to the drawings and detailed description which follow:
example 1: as shown in fig. 1 and 2, a cable temperature monitoring device comprises a temperature acquisition unit 1, wherein three temperature acquisition units 1 and one temperature monitoring unit 2 are respectively in communication connection through a data acquisition line 4; the temperature acquisition unit 1 is fixedly connected with the cable to be monitored; the temperature monitoring unit 2 is fixed on a plane through a monitoring unit fixing piece 3; the temperature acquisition unit 1 comprises a temperature sensor 11, a sensor assembly 12 and a cable connector 13; the temperature sensor 11 is installed in the sensor assembly 12 and protrudes from the sensor assembly 12 to be in contact with the cable to be monitored; the cable connection 13 fixedly connects the temperature sensor 11 to the sensor assembly 12.
The sensor assembly 12 includes a protective housing, a connector, and a cable; the temperature sensor 11 is electrically connected with the connector, and the connector is in communication connection with the temperature monitoring unit 2 through the data acquisition line 4; the temperature sensor 11 and a part of the connector are arranged inside the protective casing, and the other part respectively extends out of the interior of the protective casing.
The cable connector 13 comprises a U-shaped buckle, a connecting pin and a fastening screw; the two connecting pins are respectively and vertically fixedly connected to two opposite side surfaces of the sensor assembly 12; two ends of the U-shaped buckle are detachably and fixedly connected with the connecting pin respectively; the U-shaped bottom position department of U-shaped buckle is provided with the screw hole, and the threaded hole is joined in marriage and is equipped with the threaded rod, and the one end of threaded rod is provided with flexible gasket, and the other end is provided with the screw up handle.
The temperature monitoring unit 2 includes a package housing 21 and a temperature indicator lamp 22; three temperature indicator lamps 22 are arranged outside the packaging shell 21; the package shell 21 is internally provided with a signal processing module, a microprocessor and a battery, the three temperature sensors 11 are respectively and electrically connected with the signal processing module, the signal processing module is electrically connected with the microprocessor, and the battery is respectively and electrically connected with the microprocessor and the signal processing module; three temperature indicator lights 22 are respectively electrically connected to the microprocessor.
The signal processing module comprises a signal amplifying circuit and a filter circuit.
The package housing 21 has a semicircular cylindrical shape.
The microprocessor is also electrically connected with the buzzer.
The monitoring unit fixing piece 3 is arranged at the bottom of the temperature monitoring unit 2; the monitoring unit fixing member 3 is a magnet plate.
The working flow of the utility model is as follows:
the three temperature acquisition units 1 are respectively in communication connection with one temperature monitoring unit 2 through data acquisition lines 4, and acquire temperature data on a cable to be monitored.
The temperature acquisition unit 1 fixedly connects the temperature sensor 11 with the sensor assembly 12 through a cable connector 13, and the sensor assembly 12 is formed by a protective shell, a connector and a cable.
The temperature sensor 11 is installed in the sensor assembly 12, and protrudes from the sensor assembly 12 to be in contact with the cable to be monitored, and collects temperature data on the cable to be monitored. The temperature sensor 11 is a contact temperature sensor, and may be classified into various types such as a thermocouple, a thermistor, a thermal resistor, and a transistor according to a measurement principle. Among them, thermocouples and thermistors are the two most widely used types.
Thermocouples measure temperature changes by generating voltage signals from the thermoelectric voltages of two different metals. The thermocouple works on the principle that a temperature difference is used, i.e. when the temperatures of two ends of two different metal materials are different, a potential difference is generated between the two metals. Typical thermocouple materials include K, J, E, T, S, R.
The thermistor uses the change characteristic of the material resistance with temperature to measure the temperature. The working principle is that the material resistance changes along with the change of temperature, so that the temperature can be calculated by measuring the change of the resistance value. The thermistor materials include platinum, copper, nickel, chromium and the like, wherein the platinum has a small temperature coefficient and high stability, and is the most commonly used thermistor material.
Whether thermocouples or thermistors, they are in contact with the object to be measured in order to accurately measure temperature. Therefore, this type of temperature sensor is typically mounted on the surface or inside of an object whose temperature is to be measured, and transmits a temperature signal by contact with the object.
The temperature monitoring unit 2 is fixed on a plane through a monitoring unit fixing piece 3, such as the top end of a power distribution cabinet, and is powered by a battery.
The three temperature sensors 11 are respectively and electrically connected with the signal processing module, the signal processing module is electrically connected with the microprocessor, and the battery is respectively and electrically connected with the microprocessor and the signal processing module; three temperature indicator lights 22 are respectively electrically connected to the microprocessor.
The signal processing module includes a signal amplifying circuit and a filter circuit for processing the temperature data collected from the three temperature sensors 11 and converting it into a digital signal. The working process and principle of the signal amplifying circuit are that weak signals are amplified into stronger signals so as to carry out subsequent processing. The amplifying circuit usually consists of an amplifier whose output signal is the amplification of the input signal. The amplifier may use various different types of amplifiers, such as an operational amplifier (operational amplifier), a differential amplifier, a transistor amplifier, and the like.
The principle of operation of an amplifier is to amplify an input signal by using the difference between the input and output of the amplifier. The input signal is transferred to an amplifying circuit of the amplifier, which amplifies the intensity of the input signal and outputs the amplified signal to an output terminal of the amplifier. The amplification of an amplifier is determined by the amplifier circuitry of the amplifier and is typically expressed in units of dB (decibel).
The filter circuit is used for filtering the signal to eliminate noise and interference in the signal and only retain the required signal. The filter circuit may smooth the signal by removing high frequency noise from the signal and may improve the sharpness of the signal by removing low frequency noise from the signal.
The filters are mainly divided into four types of low-pass filters, high-pass filters, band-pass filters and band-stop filters. The low pass filter may smooth the signal by eliminating the high frequency signal. The high pass filter may improve the sharpness of the signal by eliminating the low frequency signal. The band pass filter may retain frequency signals in a certain range while eliminating signals in other frequency ranges. The band reject filter may reject frequency signals in a certain range while preserving signals in other frequency ranges.
The filter works on the principle that the filter amplifies signals in a specific frequency range and attenuates or eliminates signals in other frequency ranges by utilizing the frequency response characteristic of the filter. Different types of filters have different frequency response characteristics and can therefore be used to filter out certain types of signals.
Then, after receiving the digital signal, the microprocessor performs calculation processing and displays the result on the three temperature indicator lamps 22, if the temperature is lower than the preset temperature, the green lamp is turned on, and if the temperature is higher than the preset temperature, the red lamp is turned on.
Meanwhile, if necessary, a buzzer can be optionally arranged, and when the temperature exceeds the preset range, the microprocessor triggers the buzzer to alarm.
The utility model can accurately and stably monitor the temperature change on the cable to be monitored and ensure the normal operation of the cable.
Example 2: as shown in fig. 3, a cable temperature monitoring device comprises a temperature acquisition unit 1, wherein three temperature acquisition units 1 and one temperature monitoring unit 2 are respectively in communication connection through a data acquisition line 4; the temperature acquisition unit 1 is fixedly connected with the cable to be monitored; the temperature monitoring unit 2 is fixed on a plane through a monitoring unit fixing piece 3; the temperature acquisition unit 1 comprises a temperature sensor 11, a sensor assembly 12 and a cable connector 13; the temperature sensor 11 is installed in the sensor assembly 12 and protrudes from the sensor assembly 12 to be in contact with the cable to be monitored; the cable connection 13 fixedly connects the temperature sensor 11 to the sensor assembly 12.
The sensor assembly 12 includes a protective housing, a connector, and a cable; the temperature sensor 11 is electrically connected with the connector, and the connector is in communication connection with the temperature monitoring unit 2 through the data acquisition line 4; the temperature sensor 11 and a part of the connector are arranged inside the protective casing, and the other part respectively extends out of the interior of the protective casing.
The cable connector 13 comprises two semicircular buckles, one of which is fixedly connected with the sensor assembly 12, and the two semicircular buckles are detachably and fixedly connected with each other by fastening bolts.
The temperature monitoring unit 2 includes a package housing 21 and a temperature indicator lamp 22; three temperature indicator lamps 22 are arranged outside the packaging shell 21; the package shell 21 is internally provided with a signal processing module, a microprocessor and a battery, the three temperature sensors 11 are respectively and electrically connected with the signal processing module, the signal processing module is electrically connected with the microprocessor, and the battery is respectively and electrically connected with the microprocessor and the signal processing module; three temperature indicator lights 22 are respectively electrically connected to the microprocessor.
The signal processing module comprises a signal amplifying circuit and a filter circuit.
The package housing 21 has a semicircular cylindrical shape.
The microprocessor is also electrically connected with the buzzer.
The monitoring unit fixing piece 3 is arranged at the bottom of the temperature monitoring unit 2; the monitoring unit fixing member 3 is a magnet plate.
The working flow of the utility model is as follows:
the three temperature acquisition units 1 are respectively in communication connection with one temperature monitoring unit 2 through data acquisition lines 4, and acquire temperature data on a cable to be monitored.
The temperature acquisition unit 1 fixedly connects the temperature sensor 11 with the sensor assembly 12 through a cable connector 13, and the sensor assembly 12 is formed by a protective shell, a connector and a cable.
The temperature sensor 11 is installed in the sensor assembly 12, and protrudes from the sensor assembly 12 to be in contact with the cable to be monitored, and collects temperature data on the cable to be monitored. The temperature sensor 11 is a contact temperature sensor, and may be classified into various types such as a thermocouple, a thermistor, a thermal resistor, and a transistor according to a measurement principle. Among them, thermocouples and thermistors are the two most widely used types.
Thermocouples measure temperature changes by generating voltage signals from the thermoelectric voltages of two different metals. The thermocouple works on the principle that a temperature difference is used, i.e. when the temperatures of two ends of two different metal materials are different, a potential difference is generated between the two metals. Typical thermocouple materials include K, J, E, T, S, R.
The thermistor uses the change characteristic of the material resistance with temperature to measure the temperature. The working principle is that the material resistance changes along with the change of temperature, so that the temperature can be calculated by measuring the change of the resistance value. The thermistor materials include platinum, copper, nickel, chromium and the like, wherein the platinum has a small temperature coefficient and high stability, and is the most commonly used thermistor material.
Whether thermocouples or thermistors, they are in contact with the object to be measured in order to accurately measure temperature. Therefore, this type of temperature sensor is typically mounted on the surface or inside of an object whose temperature is to be measured, and transmits a temperature signal by contact with the object.
The temperature monitoring unit 2 is fixed on a plane through a monitoring unit fixing piece 3, such as the top end of a power distribution cabinet, and is powered by a battery.
The three temperature sensors 11 are respectively and electrically connected with the signal processing module, the signal processing module is electrically connected with the microprocessor, and the battery is respectively and electrically connected with the microprocessor and the signal processing module; three temperature indicator lights 22 are respectively electrically connected to the microprocessor.
The signal processing module includes a signal amplifying circuit and a filter circuit for processing the temperature data collected from the three temperature sensors 11 and converting it into a digital signal. The working process and principle of the signal amplifying circuit are that weak signals are amplified into stronger signals so as to carry out subsequent processing. The amplifying circuit usually consists of an amplifier whose output signal is the amplification of the input signal. The amplifier may use various different types of amplifiers, such as an operational amplifier (operational amplifier), a differential amplifier, a transistor amplifier, and the like.
The principle of operation of an amplifier is to amplify an input signal by using the difference between the input and output of the amplifier. The input signal is transferred to an amplifying circuit of the amplifier, which amplifies the intensity of the input signal and outputs the amplified signal to an output terminal of the amplifier. The amplification of an amplifier is determined by the amplifier circuitry of the amplifier and is typically expressed in units of dB (decibel).
The filter circuit is used for filtering the signal to eliminate noise and interference in the signal and only retain the required signal. The filter circuit may smooth the signal by removing high frequency noise from the signal and may improve the sharpness of the signal by removing low frequency noise from the signal.
The filters are mainly divided into four types of low-pass filters, high-pass filters, band-pass filters and band-stop filters. The low pass filter may smooth the signal by eliminating the high frequency signal. The high pass filter may improve the sharpness of the signal by eliminating the low frequency signal. The band pass filter may retain frequency signals in a certain range while eliminating signals in other frequency ranges. The band reject filter may reject frequency signals in a certain range while preserving signals in other frequency ranges.
The filter works on the principle that the filter amplifies signals in a specific frequency range and attenuates or eliminates signals in other frequency ranges by utilizing the frequency response characteristic of the filter. Different types of filters have different frequency response characteristics and can therefore be used to filter out certain types of signals.
Then, after receiving the digital signal, the microprocessor performs calculation processing and displays the result on the three temperature indicator lamps 22, if the temperature is lower than the preset temperature, the green lamp is turned on, and if the temperature is higher than the preset temperature, the red lamp is turned on.
Meanwhile, if necessary, a buzzer can be optionally arranged, and when the temperature exceeds the preset range, the microprocessor triggers the buzzer to alarm.
The utility model can accurately and stably monitor the temperature change on the cable to be monitored and ensure the normal operation of the cable.
Example 3: as shown in fig. 4, a cable temperature monitoring device comprises a temperature acquisition unit 1, wherein three temperature acquisition units 1 and one temperature monitoring unit 2 are respectively in communication connection through a data acquisition line 4; the temperature acquisition unit 1 is fixedly connected with the cable to be monitored; the temperature monitoring unit 2 is fixed on a plane through a monitoring unit fixing piece 3; the temperature acquisition unit 1 comprises a temperature sensor 11, a sensor assembly 12 and a cable connector 13; the temperature sensor 11 is installed in the sensor assembly 12 and protrudes from the sensor assembly 12 to be in contact with the cable to be monitored; the cable connection 13 fixedly connects the temperature sensor 11 to the sensor assembly 12.
The sensor assembly 12 includes a protective housing, a connector, and a cable; the temperature sensor 11 is electrically connected with the connector, and the connector is in communication connection with the temperature monitoring unit 2 through the data acquisition line 4; the temperature sensor 11 and a part of the connector are arranged inside the protective casing, and the other part respectively extends out of the interior of the protective casing.
The cable connector 13 comprises a U-shaped buckle, a connecting pin and a fastening screw; the two connecting pins are respectively and vertically fixedly connected to two opposite side surfaces of the sensor assembly 12; two ends of the U-shaped buckle are detachably and fixedly connected with the connecting pin respectively; the U-shaped bottom position department of U-shaped buckle is provided with the screw hole, and the threaded hole is joined in marriage and is equipped with the threaded rod, and the one end of threaded rod is provided with flexible gasket, and the other end is provided with the screw up handle.
The temperature monitoring unit 2 includes a package housing 21 and a temperature indicator lamp 22; three temperature indicator lamps 22 are arranged outside the packaging shell 21; the package shell 21 is internally provided with a signal processing module, a microprocessor and a battery, the three temperature sensors 11 are respectively and electrically connected with the signal processing module, the signal processing module is electrically connected with the microprocessor, and the battery is respectively and electrically connected with the microprocessor and the signal processing module; three temperature indicator lights 22 are respectively electrically connected to the microprocessor.
The signal processing module comprises a signal amplifying circuit and a filter circuit.
The package housing 21 has a semicircular cylindrical shape.
The microprocessor is also electrically connected with the buzzer.
The monitoring unit fixing piece 3 is arranged at the bottom of the temperature monitoring unit 2; the monitoring unit fixing member 3 is a suction cup.
The working flow of the utility model is as follows:
the three temperature acquisition units 1 are respectively in communication connection with one temperature monitoring unit 2 through data acquisition lines 4, and acquire temperature data on a cable to be monitored.
The temperature acquisition unit 1 fixedly connects the temperature sensor 11 with the sensor assembly 12 through a cable connector 13, and the sensor assembly 12 is formed by a protective shell, a connector and a cable.
The temperature sensor 11 is installed in the sensor assembly 12, and protrudes from the sensor assembly 12 to be in contact with the cable to be monitored, and collects temperature data on the cable to be monitored. The temperature sensor 11 is a contact temperature sensor, and may be classified into various types such as a thermocouple, a thermistor, a thermal resistor, and a transistor according to a measurement principle. Among them, thermocouples and thermistors are the two most widely used types.
Thermocouples measure temperature changes by generating voltage signals from the thermoelectric voltages of two different metals. The thermocouple works on the principle that a temperature difference is used, i.e. when the temperatures of two ends of two different metal materials are different, a potential difference is generated between the two metals. Typical thermocouple materials include K, J, E, T, S, R.
The thermistor uses the change characteristic of the material resistance with temperature to measure the temperature. The working principle is that the material resistance changes along with the change of temperature, so that the temperature can be calculated by measuring the change of the resistance value. The thermistor materials include platinum, copper, nickel, chromium and the like, wherein the platinum has a small temperature coefficient and high stability, and is the most commonly used thermistor material.
Whether thermocouples or thermistors, they are in contact with the object to be measured in order to accurately measure temperature. Therefore, this type of temperature sensor is typically mounted on the surface or inside of an object whose temperature is to be measured, and transmits a temperature signal by contact with the object.
The temperature monitoring unit 2 is fixed on a plane through a monitoring unit fixing piece 3, such as the top end of a power distribution cabinet, and is powered by a battery.
The three temperature sensors 11 are respectively and electrically connected with the signal processing module, the signal processing module is electrically connected with the microprocessor, and the battery is respectively and electrically connected with the microprocessor and the signal processing module; three temperature indicator lights 22 are respectively electrically connected to the microprocessor.
The signal processing module includes a signal amplifying circuit and a filter circuit for processing the temperature data collected from the three temperature sensors 11 and converting it into a digital signal. The working process and principle of the signal amplifying circuit are that weak signals are amplified into stronger signals so as to carry out subsequent processing. The amplifying circuit usually consists of an amplifier whose output signal is the amplification of the input signal. The amplifier may use various different types of amplifiers, such as an operational amplifier (operational amplifier), a differential amplifier, a transistor amplifier, and the like.
The principle of operation of an amplifier is to amplify an input signal by using the difference between the input and output of the amplifier. The input signal is transferred to an amplifying circuit of the amplifier, which amplifies the intensity of the input signal and outputs the amplified signal to an output terminal of the amplifier. The amplification of an amplifier is determined by the amplifier circuitry of the amplifier and is typically expressed in units of dB (decibel).
The filter circuit is used for filtering the signal to eliminate noise and interference in the signal and only retain the required signal. The filter circuit may smooth the signal by removing high frequency noise from the signal and may improve the sharpness of the signal by removing low frequency noise from the signal.
The filters are mainly divided into four types of low-pass filters, high-pass filters, band-pass filters and band-stop filters. The low pass filter may smooth the signal by eliminating the high frequency signal. The high pass filter may improve the sharpness of the signal by eliminating the low frequency signal. The band pass filter may retain frequency signals in a certain range while eliminating signals in other frequency ranges. The band reject filter may reject frequency signals in a certain range while preserving signals in other frequency ranges.
The filter works on the principle that the filter amplifies signals in a specific frequency range and attenuates or eliminates signals in other frequency ranges by utilizing the frequency response characteristic of the filter. Different types of filters have different frequency response characteristics and can therefore be used to filter out certain types of signals.
Then, after receiving the digital signal, the microprocessor performs calculation processing and displays the result on the three temperature indicator lamps 22, if the temperature is lower than the preset temperature, the green lamp is turned on, and if the temperature is higher than the preset temperature, the red lamp is turned on.
Meanwhile, if necessary, a buzzer can be optionally arranged, and when the temperature exceeds the preset range, the microprocessor triggers the buzzer to alarm.
The utility model can accurately and stably monitor the temperature change on the cable to be monitored and ensure the normal operation of the cable.
Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present utility model, and although the present utility model has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present utility model.
Claims (8)
1. The utility model provides a cable temperature monitoring device, includes temperature acquisition unit (1), its characterized in that: the three temperature acquisition units (1) are respectively connected with one temperature monitoring unit (2) in a communication way through data acquisition lines (4); the temperature acquisition unit (1) is fixedly connected with the cable to be monitored; the temperature monitoring unit (2) is fixed on a plane through a monitoring unit fixing piece (3); the temperature acquisition unit (1) comprises a temperature sensor (11), a sensor assembly (12) and a cable connector (13); the temperature sensor (11) is arranged in the sensor assembly (12) and extends out of the sensor assembly (12) to be in contact with a cable to be monitored; the cable connection (13) fixedly connects the temperature sensor (11) with the sensor assembly (12).
2. A cable temperature monitoring device according to claim 1, wherein: the sensor assembly (12) comprises a protective housing, a connector and a cable; the temperature sensor (11) is electrically connected with the connector, and the connector is in communication connection with the temperature monitoring unit (2) through the data acquisition line (4); and one part of the temperature sensor (11) and the connector are arranged inside the protective shell, and the other part of the temperature sensor and the connector respectively extend out of the interior of the protective shell.
3. A cable temperature monitoring device according to claim 1 or 2, characterized in that: the cable connector (13) comprises a U-shaped buckle, a connecting pin and a fastening screw; the two connecting pins are respectively and vertically fixedly connected to two opposite side surfaces of the sensor assembly (12); two ends of the U-shaped buckle are detachably and fixedly connected with the connecting pin respectively; a threaded hole is formed in the U-shaped bottom of the U-shaped buckle, a threaded rod is assembled in the threaded hole, a flexible gasket is arranged at one end of the threaded rod, and a tightening handle is arranged at the other end of the threaded rod;
or, the cable connector (13) comprises two semicircular buckles, one semicircular buckle is fixedly connected with the sensor assembly (12), and the two semicircular buckles are detachably and fixedly connected through fastening bolts.
4. A cable temperature monitoring device according to claim 1, wherein: the temperature monitoring unit (2) comprises a packaging shell (21) and a temperature indicator lamp (22); three temperature indicator lamps (22) are arranged outside the packaging shell (21); the temperature sensor comprises a packaging shell (21), a temperature sensor (11), a signal processing module, a microprocessor and a battery, wherein the signal processing module, the microprocessor and the battery are arranged in the packaging shell; the three temperature indicating lamps (22) are respectively and electrically connected with the microprocessor.
5. A cable temperature monitoring device according to claim 4, wherein: the signal processing module comprises a signal amplifying circuit and a filter circuit.
6. A cable temperature monitoring device according to claim 4, wherein: the package housing (21) has a semicircular cylindrical shape or a box shape.
7. A cable temperature monitoring device according to claim 4, wherein: the microprocessor is also electrically connected with the buzzer.
8. A cable temperature monitoring device according to claim 1, wherein: the monitoring unit fixing piece (3) is arranged at the bottom of the temperature monitoring unit (2); the monitoring unit fixing piece (3) is a magnet plate or a sucker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321002310.8U CN219736620U (en) | 2023-04-27 | 2023-04-27 | Cable temperature monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321002310.8U CN219736620U (en) | 2023-04-27 | 2023-04-27 | Cable temperature monitoring device |
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| Publication Number | Publication Date |
|---|---|
| CN219736620U true CN219736620U (en) | 2023-09-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321002310.8U Active CN219736620U (en) | 2023-04-27 | 2023-04-27 | Cable temperature monitoring device |
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| Country | Link |
|---|---|
| CN (1) | CN219736620U (en) |
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