CN211824741U - Handheld intelligent electric line temperature inspection device and system - Google Patents
Handheld intelligent electric line temperature inspection device and system Download PDFInfo
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- CN211824741U CN211824741U CN202020467454.0U CN202020467454U CN211824741U CN 211824741 U CN211824741 U CN 211824741U CN 202020467454 U CN202020467454 U CN 202020467454U CN 211824741 U CN211824741 U CN 211824741U
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Abstract
The utility model discloses an electric circuit temperature inspection device of hand-held type intelligence and system belongs to electric fire control technical field. Set up procapsid and the back casing at front end and rear end, integrated into one piece holds the portion in the handle of procapsid lower part, the built-in lithium cell of handle portion, holds in the closed cavity that procapsid and back casing are constituteed: the system comprises an infrared thermal imaging shooting part, an image processing part, a wireless communication part, a main control panel, a display screen and a key part; the main control board is integrated with an MCU, a buzzer, an SRAM memory, an FLASH memory and an SD card; the image processing part, the wireless communication part, the display screen, the key part, the buzzer, the SRAM memory, the FLASH memory, the SD card and the lithium battery are simultaneously electrically connected with the MCU. The handheld portable structure, it is convenient to maintain with low costs, and non professional technical personnel can patrol and examine according to patrolling and examining the plan and carry out the patrol and examine of on-the-spot electric fire hidden danger, have promoted the patrol and examine management level of building electric line fire hidden danger.
Description
Technical Field
The utility model belongs to the technical field of electric fire control, concretely relates to hand-held type intelligence electric line temperature inspection device and system.
Background
Most of electric line temperature measuring equipment in the prior art is of a single machine or a system type, the problems of large size, complex installation, high cost and the like generally exist, the performance and the service life of the equipment can be reduced after the equipment is exposed on the site for a long time, and the maintenance cost of the equipment can be increased. Some enterprises develop temperature measuring type electric fire monitoring detectors which communicate with an upper computer through twisted-pair lines, and although the temperature of an on-site electric line is monitored in real time, the detectors cannot be installed and used for special buildings which do not allow laying of pipelines, such as: ancient buildings, wood structure buildings, large span space structure buildings and other buildings.
In addition, the patrol management of the electrical line in the building is always a difficult point of property management, whether a patrol worker really goes to the site to patrol the fire hazard of the electrical line or not can accurately judge the fire hazard, and the manager cannot judge the fire hazard. Moreover, the fire and water are in no way, the investigation of the fire hazard is not slow, and under the condition that professional technicians are deficient or the professional technicians are not on duty, the non-professional technicians are expected to be capable of carrying out the inspection of the site electrical fire hazard according to the inspection plan.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art exists, the utility model provides a hand-held type intelligence electric line temperature inspection device and system.
A hand-held intelligent electric line temperature patrol device comprises a front shell (1) and a rear shell (11) which are respectively arranged at the front end and the rear end, a handle part (12) which is integrally formed at the lower part of the front shell (1), a lithium battery (5) which is arranged in the handle part (12), an openable battery cover (6) which is corresponding to the lithium battery (5) in size and seals the lithium battery in the handle part (12) is arranged outside the lithium battery (5), a key through hole (13) is integrally formed at the upper end of the handle part (12), and a display screen through hole (14) is integrally formed at the upper end of the key through hole (13); the closed cavity formed by the front shell (1) and the rear shell (11) accommodates the internal components of the temperature patrol device: the infrared thermal imaging camera comprises an infrared thermal imaging shooting part (10), an image processing part (9), a wireless communication part (8), a main control board (7), a display screen (2) and a key part (3), wherein keys on the key part (3) penetrate through key through holes (13) from the inner side of a front shell (1), and the display screen (2) penetrates into the display screen through holes (14) from the inner side of the front shell (1) and is fixedly embedded; the main control board (7) is integrated with an MCU, a buzzer, an SRAM memory, a FLASH memory and an SD card; the image processing unit (9), the wireless communication unit (8), the display screen (2), the key unit (3), the buzzer, the SRAM memory, the FLASH memory, the SD card and the lithium battery (5) are electrically connected with the MCU at the same time.
According to the handheld intelligent electric line temperature patrol device, the infrared thermal imaging shooting part (10) consists of an infrared thermal imaging camera and a common camera, and the two cameras are simultaneously and electrically connected with an image processing part (9); wherein, the infrared thermal imaging camera collects the initial infrared image of the electric circuit to be measured, the common camera collects the common image of the electric circuit to be measured, and the images are transmitted to the image processing part (9); the image processing part fuses the received initial infrared image and the common image of the electric circuit to obtain a final electric circuit thermal image, and transmits the final electric circuit thermal image to the MCU.
According to the handheld intelligent electric line temperature patrol device, the wireless communication part (8) is formed by connecting WiFi, NB-IoT and Bluetooth wireless network modules in parallel.
An intelligent electric line temperature patrol system comprises a building electric fire hazard patrol system positioned on an upper computer, a position information module and any one of the handheld intelligent electric line temperature patrol devices;
the electric line temperature patrol device is connected with the building electric fire hidden danger patrol system through a wireless network, and the measured electric line thermal image and temperature value are transmitted to the building electric fire hidden danger patrol system in real time; the building electrical fire hazard patrol system stores the received thermal image and the electrical line temperature value, compares the electrical line temperature measurement data with an initially set early warning temperature value in real time, and gives an alarm prompt on the patrol system if the electrical line temperature value exceeds the early warning temperature value so as to enable a professional to judge whether a fire trend exists; the position information module is fixedly arranged at the position close to the electrical circuit which is only corresponding to the position information module; the position information module is used for predefining the position information of the electrical circuit corresponding to the unique position information by the construction electrical fire hidden danger patrol system; the electric line temperature patrol device establishes a connection relation with the position information module through a wireless network so as to acquire the position information of the electric line to be subjected to temperature measurement, and transmits the acquired position information of the electric line to be subjected to temperature measurement to the building electric fire hazard patrol system; the building electrical fire hazard patrol system judges whether the received position information of the electrical line to be measured is the planned electrical line to be measured according to a preset electrical line temperature patrol plan, if so, the electrical line temperature patrol device gives correct indication of the electrical line, an operator measures the temperature of the electrical line by using the electrical line temperature patrol device, if not, the electrical line temperature patrol device gives wrong indication of the electrical line, and the operator finds the correct electrical line to be measured again.
According to intelligent electric line temperature inspection system, the position information module is the bluetooth label, and the bluetooth label is firmly fixed at rather than the electric line position of being unique to correspond.
The utility model provides a hand-held type intelligence electric circuit temperature inspection device structure is handheld portable, with low costs, convenient to use, maintenance are convenient, the maintenance cost is low, under the condition that professional is deficient or professional is not on duty, non professional technical personnel can also patrol and examine the hidden danger of on-the-spot electric fire according to patrolling and examining the plan; the intelligent electric line temperature patrol system can report the electric line thermal image and the temperature value of the detection point to the building electric fire hazard patrol system in real time through the wireless transmission network, so that the defects that the traditional electric fire monitoring device cannot transmit data in real time and the problem that wiring cannot be arranged in a special building when a wired transmission network is adopted are solved; the functions of positioning during troubleshooting and patrolling personnel for positioning and fixing points are added, and the patrolling management level of fire hazard of fire-fighting facilities/electric lines in the building is improved.
Drawings
Fig. 1 is a schematic structural view of the handheld intelligent electric line temperature inspection device of the present invention;
fig. 2 is a schematic diagram of a preferred structure of the handheld intelligent electric line temperature patrol device of the present invention;
fig. 3 is a schematic diagram of a preferred structure of the handheld intelligent electric line temperature patrol device of the present invention;
fig. 4 is a schematic structural view of the intelligent electric line temperature patrol system of the utility model;
fig. 5 is a schematic diagram of a preferred structure of the intelligent electric line temperature patrol system of the present invention;
wherein, 1 — front case; 2-a display screen; 3-a key section; 4-plug; 5-a lithium battery; 6-battery cover; 7, a main control board; 8-wireless communication part; 9-an image processing section; 10-infrared thermal imaging shooting part; 11-rear housing; 12-a handle portion; 13-key through hole; 14-through holes of a display screen; 15-inserting through holes of the Sim card; 16-charging port.
Detailed Description
The embodiments of the present invention will be described more fully hereinafter with reference to the accompanying drawings.
A first aspect of the present embodiment provides a handheld intelligent electric line temperature patrol device, hereinafter referred to as a temperature patrol device, which is also easily operated by a non-professional technician, as shown in fig. 1, which comprises a front shell 1 and a rear shell 11 respectively arranged at the front end and the rear end of the temperature patrol device, a handle part 12 integrally formed at the lower part of the front shell 1, a lithium battery 5 arranged in the handle part 12, an openable battery cover 6 which is corresponding to the size of the lithium battery 5 and seals the lithium battery in the handle part 12, a key through hole 13 is integrally formed at the upper end of the handle portion 12, a display screen through hole 14 is integrally formed at the upper end of the key through hole 13, a through hole 15 for inserting an NB-IoT communication card (preferably a Sim card) and a charging port 16 are integrally formed at one side of the front case 1 at the upper end of the handle portion 12, and a plug 4 which is matched with the side edge and can be opened and is made of rubber materials for blocking the through hole 15 and the charging port 16; the front case 1 and the rear case 11 form a closed chamber in which the internal components of the temperature patrol device are housed/contained: the infrared thermal imaging shooting part 10, the image processing part 9, the wireless communication part 8, the main control board 7, the display screen 2 and the key part 3 are electrically connected in sequence from the inner side of the rear shell 11 to the inner side of the front shell 1, keys on the key part 3 penetrate through the key through holes 13 from the inner side of the front shell 1, and the display screen 2 penetrates into the display screen through holes 14 from the inner side of the front shell 1 and is embedded and fixed. The main control board 7 is integrated with a microcontroller MCU, a buzzer, an SRAM memory, a FLASH memory and an SD card, wherein the microcontroller MCU adopts an ARM chip with the model number of STM32F407ZGT 6. The wireless communication part 8 is integrated with a serial port WiFi module with the model number of ESP8266, an NB-IoT module with the model number of BC26 and a Bluetooth wireless module with the model number of NRF 52832. The image processing part 9, the wireless communication part 8, the display screen 2, the key part 3, the buzzer, the SRAM memory, the FLASH memory, the SD card and the lithium battery 5 are electrically connected with the MCU at the same time.
The infrared thermal imaging shooting part 10 is used for shooting thermal images of the electric circuit and transmitting the thermal images to the microcontroller MCU. And the wireless communication part 8 is used for establishing wireless communication connection between the microcontroller MCU and other equipment outside the temperature patrol device. And the display screen 2 is used for displaying temperature information and alarm information sent by the microcontroller MCU. The key part 3 functions to input data to the microcontroller MCU and/or transmit an operation control command of the temperature patrol apparatus. And the buzzer gives an audible alarm when the temperature of the electric circuit is higher than the early warning temperature. Lithium cell 5 for each part power supply of temperature inspection device, because the utility model discloses a temperature inspection device is handheld, and volume and weight are the better more, therefore preferred lithium cell for the convenience of temperature inspection device is stronger, has also reduced the maintenance cost of temperature inspection device. And the SRAM memory and the FLASH memory are used for temporarily storing data sent by the microcontroller MCU. And the SD card is used for permanently storing the data sent by the MCU. The microcontroller MCU can be a common single chip microcomputer, an ARM or a DSP chip and is used for receiving the thermal image of the electric circuit shot by the infrared thermal imaging shooting part and storing the thermal image of the electric circuit on the temporary storage part and the memory card; comparing the temperature data given by the thermal image in the temporary storage part with a preset early warning temperature value in real time, if the temperature value of the electric line is found to exceed the early warning temperature value, controlling an alarm circuit to give an alarm, and simultaneously displaying the temperature value of the electric line and alarm prompt information that the temperature of the electric line exceeds the standard on a display module in real time; the received information is transmitted to other equipment outside the temperature patrol device through the wireless communication part, and/or data and/or command signals sent by other equipment outside the temperature patrol device are received through the wireless communication part; and receiving the operation control command and/or data of the temperature patrol device input by the input module.
Further, because the infrared thermal imaging camera of higher pixel is high in price, if the infrared thermal imaging camera of higher pixel is adopted to infrared thermal imaging shooting department, then the utility model discloses a hand-held type intelligence electric circuit temperature inspection device's cost can be very high. In order to reduce the cost, as shown in fig. 2, the infrared thermal imaging shooting part 10 of the present invention is composed of an infrared thermal imaging camera with relatively low price and relatively low pixels (e.g. 32 × 32 pixels) and a common camera with relatively high pixels (higher than 32 × 32 pixels), and the two cameras are electrically connected to an image processing part 9 at the same time. Wherein the infrared thermal imaging camera gathers the low-definition infrared image of the electric circuit of waiting to measure the temperature, and ordinary camera gathers the ordinary image of the electric circuit of waiting to measure the temperature, and all conveys to image processing portion 9. The image processing unit 9 fuses the received infrared image of the lower pixel of the electrical circuit with the received ordinary image of the higher pixel to obtain a higher-definition thermal image of the electrical circuit of the higher pixel, and transmits the higher-definition thermal image to the microcontroller MCU. According to the structure, although the infrared image collected by the infrared thermal imaging camera with the lower pixels is not high-definition enough, the shot image is the infrared image, and the common image collected by the common camera can obtain the required relatively clear electric circuit thermal image after being processed by the image processing part 9 due to the fact that the pixel is high in image definition enough, so that people can see the image more clearly, and the real-time image is smooth. Although this kind of structure part is many, two kinds of cameras add an image processing portion, but because the infrared thermal imaging camera price of lower pixel is relatively lower, ordinary camera technical maturity, and it is extensive to use, even the ordinary camera price of higher pixel is also relatively lower, the cost that adds up still is less than the infrared thermal imaging camera who adopts the higher high pixel of a price, thereby also makes the utility model discloses an electric wire temperature inspection device's cost reduces by a wide margin.
Further, when the microcontroller MCU establishes wireless connection with other devices outside the temperature patrol apparatus, the wireless connection can be implemented by WiFi, NB-IoT and bluetooth wireless networks in the prior art, preferably, as shown in fig. 3, the wireless communication part 8 integrates all the three wireless network modules together, when the microcontroller MCU detects that the temperature patrol apparatus is connected to a WiFi signal, the information can be transmitted through the WiFi signal, when the WiFi signal is not detected, the information can be transmitted through the NB-IoT network, when the temperature patrol apparatus does not detect any network communication signal, the microcontroller MCU stores the information into the internal SRAM/built-in SD card, and when the wireless communication connection signal exists, the information to be transmitted is transmitted, so as to ensure reliable application of wireless communication to the maximum.
The utility model discloses the second aspect provides an intelligence electric line temperature inspection system, as shown in fig. 4, including a building electric fire hidden danger inspection system who is located the host computer, a position information module and any kind of above-mentioned electric line temperature inspection device. The electric line temperature patrol device is connected with the building electric fire hazard patrol system through a wireless network, and is used for measuring the electric line temperature and the thermal image and transmitting the measured electric line temperature value and the thermal image to the building electric fire hazard patrol system in real time. The construction electrical fire hazard patrol system stores the received electrical line temperature value, compares the electrical line temperature measurement data with the initially set early warning temperature value in real time, and if the electrical line temperature value is found to exceed the early warning temperature value, gives an alarm prompt on the patrol system, namely monitors the daily temperature change of the electrical line according to the stored electrical line temperature historical data, and provides professional technicians to judge whether a fire trend exists; the position information module is fixedly arranged at the position close to the electrical circuit which is only corresponding to the position information module; and the position information module is internally predefined with the position information of the electrical circuit uniquely corresponding to the position information by the construction electrical fire hazard patrol system. The electric line temperature patrol device establishes a connection relation with the position information module through a wireless network so as to acquire the position information of the electric line to be subjected to temperature measurement and transmit the acquired position information of the electric line to be subjected to temperature measurement to the building electric fire hazard patrol system. The building electrical fire hazard patrol system judges whether the received position information of the electrical line to be measured is the planned electrical line to be measured according to a preset electrical line temperature patrol plan, if so, the electrical line temperature patrol device gives correct indication of the electrical line, an operator measures the temperature of the electrical line by using the electrical line temperature patrol device, if not, the electrical line temperature patrol device gives wrong indication of the electrical line, and the operator finds the correct electrical line to be measured again.
Further, as shown in fig. 5, the location information module in the intelligent electric line temperature patrol system is preferably a bluetooth tag. In order to avoid the dropping, damage and picking of the Bluetooth tag, the Bluetooth tag needs to be firmly fixed at a position near the electrical circuit uniquely corresponding to the Bluetooth tag. When an operator holds the temperature patrol device to a certain fixed position to detect the temperature of an electric line, the temperature patrol device is connected with the Bluetooth label through the Bluetooth network, so that the patrol and positioning of the operator are realized.
Further, in the intelligent electric line temperature patrol system with the preferred electric line temperature patrol device, when an ARM chip of the STM32F407ZGT6 model detects that the temperature patrol device is connected with a WiFi signal through an ESP8266 serial port WiFi module, information is transmitted to the building electric fire hazard patrol system through the WiFi signal; when the WiFi signal cannot be detected, the NB-IoT module with the model number of BC26 is used for driving the NB-IoT wireless communication mode to enable the temperature patrol device to transmit information to the patrol system through the NB-IoT network; when the temperature patrol device cannot detect any transmittable signals (WiFi/NB-IoT), the STM32F407ZGT6ARM chip stores information in an internal SRAM/built-in SD card, and when a wireless connection signal exists, the temperature patrol device transmits the information to be transmitted to the patrol system.
The utility model discloses intelligence electric line temperature inspection system's one shot operation process as follows:
an operator holds the temperature patrol device to an electric line site, and the temperature patrol device is used for acquiring address information of the electric line through the position information module; the position information module in the embodiment is a Bluetooth tag, an operator holds the temperature patrol device by hand to scan the Bluetooth tag at a position near an on-site electric line, and the position information of the electric line is obtained through the Bluetooth network; the temperature patrol device transmits the electric line address information acquired from the position information module to a building electric fire hazard patrol system positioned on an upper computer through a wireless network, so that the positioning of operators is realized; the building electrical fire hazard patrol system judges whether the received position information of the electrical line is the electrical line to be tested in the patrol plan according to a preset electrical line temperature patrol plan, if so, the system gives correct indication of the electrical line through the electrical line temperature patrol device, and if not, the system gives wrong indication of the electrical line through the electrical line temperature patrol device until the correct electrical line to be tested is found; an operator holds the electric circuit temperature patrol device by hand to aim at the electric circuit to carry out shooting and temperature measurement; the low-definition (for example, 32 x 32 pixels) infrared thermal imaging camera and the high-definition (higher than 32 x 32 pixels) common camera on the electric line temperature patrol device respectively collect a low-definition first infrared thermal image and a high-definition common image of the electric line and transmit the images to the image processing part; the image processing part fuses the received first infrared thermograph and the high-definition common image to obtain a high-definition second infrared thermograph of the electric circuit, and transmits the second infrared thermograph to the microcontroller MCU;
the micro-controller MCU firstly stores the received electric circuit infrared thermal image in the temporary storage part, then compares the electric circuit highest temperature value given in the infrared thermal image with the initially set early warning temperature value, if the electric circuit highest temperature value exceeds the early warning temperature value, the temperature value is displayed through the display module, and the warning circuit is controlled to give an alarm; the temporary storage part of the embodiment is an SRAM memory and a FLASH memory; the microcontroller MCU detects whether the temperature inspection device is communicated with a wireless network through the wireless communication part, and transmits an electrical line infrared thermal image and an electrical line temperature value to the building electrical fire hazard inspection system through the wireless network if the temperature inspection device is communicated with the wireless network; if not, when the microcontroller MCU does not detect any wireless network signal, the microcontroller MCU stores the infrared thermal image of the electrical circuit and the highest temperature value of the electrical circuit into an internal storage card, and when a wireless network connection signal exists, the microcontroller MCU transmits information to be transmitted to the building electrical fire hazard patrol system; in the embodiment, an ARM chip of the STM32F407ZGT6 detects that a temperature patrol device is connected with a WiFi signal through an ESP8266 type serial port WiFi module, and transmits information to a building electrical fire hazard patrol system through the WiFi signal; when the WiFi signal cannot be detected, the NB-IoT module with the model number of BC26 is used for driving the NB-IoT wireless communication mode to enable the temperature patrol device to transmit information to the patrol system through the NB-IoT network; when the temperature patrol device cannot detect any transmittable signals (WiFi/NB-IoT), the STM32F407ZGT6ARM chip stores information into the built-in SD card, and when a wireless connection signal exists, the temperature patrol device transmits the information to be transmitted to the patrol system; the building electrical fire hazard patrol system stores the received electrical line infrared thermal image and the electrical line maximum temperature value, compares the electrical line temperature measurement data with the initially set early warning temperature value in real time, and if the electrical line temperature value exceeds the early warning temperature value, gives an alarm prompt on the patrol system, namely monitors the daily temperature change of the electrical line according to the stored electrical line temperature historical data, and provides professional technicians for judging whether a fire trend exists.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (5)
1. The utility model provides a hand-held type intelligence electric line temperature inspection device which characterized in that: the lithium battery pack comprises a front shell (1) and a rear shell (11) which are respectively arranged at the front end and the rear end, a handle part (12) which is integrally formed at the lower part of the front shell (1), a lithium battery (5) which is arranged in the handle part (12), an openable battery cover (6) which is corresponding to the lithium battery (5) in size and seals the lithium battery in the handle part (12), a key through hole (13) which is integrally formed at the upper end of the handle part (12), and a display screen through hole (14) which is integrally formed at the upper end of the key through hole (13); the closed cavity formed by the front shell (1) and the rear shell (11) accommodates the internal components of the temperature patrol device: the infrared thermal imaging camera comprises an infrared thermal imaging shooting part (10), an image processing part (9), a wireless communication part (8), a main control board (7), a display screen (2) and a key part (3), wherein keys on the key part (3) penetrate through key through holes (13) from the inner side of a front shell (1), and the display screen (2) penetrates into the display screen through holes (14) from the inner side of the front shell (1) and is fixedly embedded; the main control board (7) is integrated with an MCU, a buzzer, an SRAM memory, a FLASH memory and an SD card; the image processing unit (9), the wireless communication unit (8), the display screen (2), the key unit (3), the buzzer, the SRAM memory, the FLASH memory, the SD card and the lithium battery (5) are electrically connected with the MCU at the same time.
2. The hand-held intelligent electrical line temperature patrol device of claim 1, wherein: the infrared thermal imaging shooting part (10) consists of an infrared thermal imaging camera and a common camera, and the two cameras are simultaneously and electrically connected with an image processing part (9); wherein, the infrared thermal imaging camera collects the initial infrared image of the electric circuit to be measured, the common camera collects the common image of the electric circuit to be measured, and the images are transmitted to the image processing part (9); the image processing part fuses the received initial infrared image and the common image of the electric circuit to obtain a final electric circuit thermal image, and transmits the final electric circuit thermal image to the MCU.
3. The hand-held intelligent electrical line temperature patrol device of claim 1, wherein: the wireless communication part (8) is formed by connecting WiFi, NB-IoT and Bluetooth wireless network modules in parallel.
4. The utility model provides an intelligence electric line temperature inspection system which characterized in that: the system comprises a building electrical fire hazard patrol system positioned on an upper computer, a position information module and the handheld intelligent electrical line temperature patrol device as claimed in any one of claims 1 to 3;
the electric line temperature patrol device is connected with the building electric fire hidden danger patrol system through a wireless network, and the measured electric line thermal image and temperature value are transmitted to the building electric fire hidden danger patrol system in real time; the building electrical fire hazard patrol system stores the received thermal image and the electrical line temperature value, compares the electrical line temperature measurement data with an initially set early warning temperature value in real time, and gives an alarm prompt on the patrol system if the electrical line temperature value exceeds the early warning temperature value so as to enable a professional to judge whether a fire trend exists; the position information module is fixedly arranged at the position close to the electrical circuit uniquely corresponding to the position information module.
5. The intelligent electrical line temperature patrol system of claim 4, wherein: the position information module is a Bluetooth label, and the Bluetooth label is firmly fixed at the position near the electrical circuit which is only corresponding to the Bluetooth label.
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| CN202020467454.0U CN211824741U (en) | 2020-04-02 | 2020-04-02 | Handheld intelligent electric line temperature inspection device and system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111337141A (en) * | 2020-04-02 | 2020-06-26 | 沈阳美宝控制有限公司 | Handheld intelligent electric line temperature patrol device, system and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111337141A (en) * | 2020-04-02 | 2020-06-26 | 沈阳美宝控制有限公司 | Handheld intelligent electric line temperature patrol device, system and method |
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