CN214621537U - Temperature sensing cable performance detection device based on temperature resistance characteristic - Google Patents
Temperature sensing cable performance detection device based on temperature resistance characteristic Download PDFInfo
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- CN214621537U CN214621537U CN202120207159.6U CN202120207159U CN214621537U CN 214621537 U CN214621537 U CN 214621537U CN 202120207159 U CN202120207159 U CN 202120207159U CN 214621537 U CN214621537 U CN 214621537U
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Abstract
The utility model discloses a temperature sensing cable performance detection device based on temperature hinders characteristic, the device mainly include main control system, temperature control system and detect 3 parts of structure, and main control unit control temperature control system heats temperature to the target value around the temperature sensing cable, detects structure monitoring temperature and cable resistance around the temperature sensing cable, through the cable resistance under the different temperatures, and the fitting temperature hinders characteristic curve and show. The utility model discloses can arrange the environment according to the cable of scene difference, set up different cable heating methods, convenient performance to scene temperature sensing cable evaluates, effectively stops to have damaged or low quality temperature sensing cable and uses at the scene.
Description
Technical Field
The utility model relates to a temperature sensing cable performance detection device based on temperature hinders characteristic belongs to transformer state detection technical field.
Background
The temperature sensing cable applied to the electrical equipment in the transformer substation has the problem of mistakenly sending an alarm signal due to the lack of quantitative detection equipment suitable for the site.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a temperature sensing cable performance detection device based on temperature hinders characteristic, through heating around the temperature sensing cable, monitors the impedance change of temperature sensing cable under the different temperatures, draws temperature-resistance characteristic curve, quantitative detection temperature sensing cable performance.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a temperature sensing cable performance detection device based on temperature hinders characteristic, include:
the main control system is used for displaying the performance of the temperature sensing cable;
a temperature control system for heating the temperature sensing cable;
and the number of the first and second groups,
the detection structure is used for detecting the ambient temperature of the temperature sensing cable and the resistance value of the cable;
the temperature control system is wrapped outside the temperature sensing cable;
the detection structure is arranged on the stable control system;
the temperature control system and the detection structure are communicated with the master control system in a wireless mode.
Further, the master control system includes: the device comprises a voltage and current sampling circuit, an AD conversion circuit, a CPU, a communication module, a photoelectric coupler and a human-computer interface;
the voltage and current sampling circuit is used for sampling the voltage and the current of the temperature sensing cable measuring loop;
the AD conversion circuit is used for converting the temperature signal into an electric signal;
the CPU is used for controlling the heating of the temperature control system, calculating the resistance of the temperature sensing cable according to the voltage and the current, and fitting a temperature resistance characteristic curve;
the communication module is used for communication between the main control system and the temperature control system and between the main control system and the detection structure;
the human-computer interface is used for displaying the fitted temperature resistance characteristic curve and setting a target temperature value of a user;
the photoelectric coupler is arranged between the CPU and the temperature control system.
Further, the CPU is configured with excel or matlab, and is configured to fit a temperature resistance characteristic curve according to the ambient temperature of the temperature sensing cable and the cable resistance value.
Furthermore, the device also comprises a power supply module, wherein the power supply module is used for supplying power to the master control system, the temperature control system and the detection structure.
Further, in the above-mentioned case,
for the field non-detachable temperature sensing cable structure, the temperature control system adopts a silicon rubber heating sheet.
Further, in the above-mentioned case,
for the detachable temperature sensing cable structure, the temperature control system adopts an accommodating type constant temperature bag.
Further, the silicon rubber heating sheet is cylindrical.
Further, the detection structure comprises a temperature sensor and a voltage and current sensor;
the temperature sensor is used for measuring the ambient temperature of the temperature sensing cable;
the voltage and current sensor is used for measuring the voltage and current of the temperature sensing cable resistance measuring loop.
The utility model has the advantages that:
the utility model provides a temperature sensing cable performance detection device based on temperature hinders characteristic heats temperature to the target value around the temperature sensing cable through control temperature control system, hinders characteristic curve, quantitative detection temperature sensing cable performance based on temperature and cable resistance fit temperature around the temperature sensing cable. Has the following advantages: 1. the device can be applied to the quantitative detection of the temperature resistance characteristic of the temperature sensing cable. 2. The device can judge the performance of the temperature sensing cable, can effectively prevent the damaged or low-quality temperature sensing cable from being used on site, and improves the reliability of a fire-fighting system of a transformer substation.
Drawings
Fig. 1 is a structural view of the temperature sensing cable detecting device of the present invention.
Detailed Description
The present invention is further described below. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
The utility model provides a temperature sensing cable performance detection device based on temperature hinders characteristic, as shown in fig. 1, include major control system, temperature control system and detect 3 parts of structure.
The master control system is communicated with the temperature control system in a wireless mode.
The main control system is used for controlling the temperature control system to heat the ambient temperature of the temperature sensing cable to a target value, and fitting and displaying a temperature resistance characteristic curve based on the ambient temperature of the temperature sensing cable and the resistance value of the cable.
The temperature control system is used for heating the temperature sensing cable.
The detection structure is used for monitoring the ambient temperature of the temperature sensing cable and the resistance value of the cable.
Specifically, the master control system mainly comprises a voltage and current sampling circuit, an AD conversion circuit, a CPU, a communication module, a photoelectric coupler and a human-computer interface.
The communication module is used for communication between the main control system and the temperature control system and between the main control system and the detection structure. The communication module can adopt wireless wifi and the like.
The voltage and current sampling circuit is used for sampling the voltage and the current of the temperature sensing cable measuring loop, and is a common sampling circuit structure.
The AD conversion circuit is used for converting the ambient temperature of the temperature sensing cable into an electric signal which can be identified by a CPU, and is a common sampling circuit structure.
The photoelectric coupler is arranged between the CPU and the temperature control system and used for isolating input and output signals and realizing accurate control of temperature.
The CPU is used for controlling the heating of the temperature control system, calculating the resistance of the temperature sensing cable according to the voltage and the current, and fitting a temperature resistance characteristic curve.
The human-computer interface is used for displaying the fitted temperature resistance characteristic curve and setting a target temperature value of a user.
It should be noted that the CPU controls the heating of the temperature control system and calculates the resistance of the temperature sensing cable according to the voltage and the current, which is well known to those skilled in the art, and can be implemented by simply setting the CPU.
The method is characterized in that a temperature and a resistance of a group of temperature sensing cables are corresponding to the target temperature of one measuring point, curve fitting is carried out according to data points, and common knowledge operation is also involved, so that the temperature and resistance characteristic curve fitting of a CPU is conventional operation which can be realized through a tool kit of the CPU, such as excel and matlab.
Specifically, for a field non-detachable structure, the temperature control system adopts a cylindrical silica gel heating sheet; to the structure that can conveniently dismantle, temperature control system adopts and holds the type constant temperature bag, can once only put into temperature sensing cable is whole, realizes temperature sensing cable constant temperature heating.
Specifically, detect the structural installation on temperature control system, detect the structure and adopt temperature sensor and voltage, current sensor, carry out temperature monitoring through temperature sensor, carry out resistance monitoring through voltage and current sensor.
The utility model discloses a theory of operation does:
setting a target temperature value to be heated through a human-computer interface, and controlling a temperature control system to heat by a CPU according to the target temperature value; the voltage and current sensors detect the voltage and current data of a temperature sensing cable measuring loop in real time, and the temperature sensors detect the ambient temperature of the temperature sensing cable in real time;
after heating is finished, the voltage and current sampling circuit samples voltage and current data at the current temperature, the voltage and current data are converted into digital quantity through the AD conversion circuit and then sent to the CPU, and the CPU calculates the temperature sensing cable resistance according to the voltage and the current and simultaneously stores the measured temperature of the temperature sensor at the current state; a target temperature measuring point corresponds to the temperature and the resistance value of a group of temperature sensing cables;
and resetting the target temperature value according to the preset temperature step length, repeating the process, obtaining the measured temperature and the resistance around the temperature sensing cable under the current target temperature value, and storing the measured temperature and the resistance until the data in the whole temperature range are measured.
And fitting the temperature and the resistance of the temperature sensing cables of all the measuring points into a temperature resistance characteristic curve by using excel or matlab, and displaying the temperature resistance characteristic curve through a human-computer interface.
The above description is only a preferred embodiment of the present invention, and it should be noted that: for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be considered as the protection scope of the present invention.
Claims (8)
1. The utility model provides a temperature sensing cable performance detection device based on temperature hinders characteristic which characterized in that includes:
the main control system is used for displaying the performance of the temperature sensing cable;
a temperature control system for heating the temperature sensing cable;
and the number of the first and second groups,
the detection structure is used for detecting the ambient temperature of the temperature sensing cable and the resistance value of the cable;
the temperature control system is wrapped outside the temperature sensing cable;
the detection structure is arranged on the temperature control system;
the temperature control system and the detection structure are communicated with the master control system in a wireless mode.
2. The temperature-sensitive cable performance detection device based on the temperature-resistance characteristic of claim 1, wherein the main control system comprises: the device comprises a voltage and current sampling circuit, an AD conversion circuit, a CPU, a communication module, a photoelectric coupler and a human-computer interface;
the voltage and current sampling circuit is used for sampling the voltage and the current of the temperature sensing cable measuring loop;
the AD conversion circuit is used for converting the temperature signal into an electric signal;
the CPU is used for controlling the heating of the temperature control system, calculating the resistance of the temperature sensing cable according to the voltage and the current, and fitting a temperature resistance characteristic curve;
the communication module is used for communication between the main control system and the temperature control system and between the main control system and the detection structure;
the human-computer interface is used for displaying the fitted temperature resistance characteristic curve and setting a target temperature value of a user;
the photoelectric coupler is arranged between the CPU and the temperature control system.
3. The temperature-sensing cable performance detection device based on the temperature-resistance characteristic of claim 2, wherein the CPU is configured with excel or matlab, and is configured to fit a temperature-resistance characteristic curve according to the ambient temperature of the temperature-sensing cable and the cable resistance value.
4. The temperature-sensing cable performance detection device based on the temperature-resistance characteristic of claim 1, further comprising a power module, wherein the power module is used for supplying power to the main control system, the temperature control system and the detection structure.
5. The temperature-sensitive cable performance detecting device based on temperature-resistance characteristics according to claim 1,
for the field non-detachable temperature sensing cable structure, the temperature control system adopts a silicon rubber heating sheet.
6. The temperature-sensitive cable performance detecting device based on temperature-resistance characteristics according to claim 1,
for the detachable temperature sensing cable structure, the temperature control system adopts an accommodating type constant temperature bag.
7. The temperature-sensitive cable performance detection device based on temperature-resistance characteristics of claim 5, wherein the silicone rubber heating sheet is cylindrical.
8. The temperature-sensing cable performance detection device based on the temperature-resistance characteristic of claim 1, wherein the detection structure comprises a temperature sensor and a voltage and current sensor;
the temperature sensor is used for measuring the ambient temperature of the temperature sensing cable;
the voltage and current sensor is used for measuring the voltage and current of the temperature sensing cable resistance measuring loop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120207159.6U CN214621537U (en) | 2021-01-25 | 2021-01-25 | Temperature sensing cable performance detection device based on temperature resistance characteristic |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120207159.6U CN214621537U (en) | 2021-01-25 | 2021-01-25 | Temperature sensing cable performance detection device based on temperature resistance characteristic |
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| Publication Number | Publication Date |
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| CN214621537U true CN214621537U (en) | 2021-11-05 |
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| CN202120207159.6U Active CN214621537U (en) | 2021-01-25 | 2021-01-25 | Temperature sensing cable performance detection device based on temperature resistance characteristic |
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- 2021-01-25 CN CN202120207159.6U patent/CN214621537U/en active Active
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