Mining explosion-proof switch temperature detection device

Abstract

The utility model discloses a mining explosion-proof switch temperature detection device which comprises a wireless temperature detection module and an antenna which are arranged in a first cavity of a mining explosion-proof switch, and the antenna is electrically connected with a signal receiving module arranged in a second cavity of the mining explosion-proof switch through a through-wall terminal. And the signal receiving module is electrically connected with a controller of the mining explosion-proof switch. The wall-through terminals are adopted in different cavities of the mining explosion-proof switch, and the antennas are arranged on the wall-through terminals to provide channels for signal transmission, so that real-time monitoring and early warning of the temperature of key parts are realized on the premise of not influencing the normal work of the explosion-proof switch, thereby effectively preventing safety accidents caused by overheating of equipment, and improving the safety of the mining explosion-proof switch. And the personal safety of underground workers is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of temperature detection technology in mining, specifically to a temperature detection device for an explosion-proof switch in mining. Background Technology

[0002] Explosion-proof switches play a crucial role in mine power supply systems. They not only control and protect high-voltage power lines but can also directly start motors or be used for power distribution. In underground mining operations, the operating status of explosion-proof switches directly affects power quality and the safety of underground workers. Therefore, real-time monitoring of their operating temperature is particularly important.

[0003] However, in the existing wireless temperature transmission unit of the explosion-proof switch temperature detection device, the transmitting module and the receiving module are separated in different cavities, the signal is completely shielded, and the receiving module cannot receive the temperature signal detected by the transmitting module, resulting in the inability to monitor the temperature inside the explosion-proof switch in a timely manner.

[0004] Therefore, how to achieve timely detection of the temperature of special parts inside explosion-proof switches is a technical problem that urgently needs to be solved in this field. Summary of the Invention

[0005] To solve the above-mentioned technical problems, this utility model proposes the following technical solution:

[0006] In a first aspect, this utility model provides a temperature detection device for a mine explosion-proof switch, comprising: a wireless temperature detection module and an antenna disposed in the first cavity of the mine explosion-proof switch, wherein the antenna is electrically connected to a signal receiving module disposed in the second cavity of the mine explosion-proof switch via a through-wall terminal, and the signal receiving module is electrically connected to the controller of the mine explosion-proof switch.

[0007] In one possible implementation, the wireless temperature detection module includes a temperature sensor and a first microprocessor electrically connected to the output of the temperature sensor, the output of the first microprocessor being electrically connected to the input of the wireless transmission module; the wireless transmission module is communicatively connected to an antenna.

[0008] In one possible implementation, the wireless transmitting unit employs a CCMPATR2.4 highly integrated, low-power, high-performance transceiver chip capable of long-distance transmission.

[0009] In one possible implementation, the temperature sensor is a high-precision, high-temperature-resistant digital temperature sensor with a one-wire bus interface.

[0010] In one possible implementation, the first cavity of the mine explosion-proof switch is provided with wiring terminals and circuit breaker contacts, and the temperature sensor is fixedly mounted on the wiring terminals and / or circuit breaker contacts by a fixed wrist strap.

[0011] In one possible implementation, multiple temperature sensors are provided, with only one temperature sensor provided on each of the terminals or circuit breaker contacts.

[0012] In one possible implementation, the signal receiving module includes a wireless receiving unit and a second microcontroller electrically connected to the wireless receiving unit. The second microcontroller is electrically connected to a first terminal of the controller of the mine explosion-proof switch via a communication interface. The second terminal of the controller of the mine explosion-proof switch is electrically connected to a host computer and a display screen, respectively.

[0013] In one possible implementation, the display screen is a color industrial screen.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] This invention employs through-wall terminals in different cavities of the mine explosion-proof switch. By installing antennas on the through-wall terminals, a channel for signal transmission is provided, allowing for timely monitoring of temperature changes underground and preventing safety accidents caused by potential overheating of high-voltage electrical equipment in coal mines.

[0016] This invention enables real-time monitoring and early warning of the temperature of critical components without affecting the normal operation of the explosion-proof switch, thereby effectively preventing safety accidents caused by equipment overheating and ensuring the personal safety of underground workers.

[0017] The temperature sensor in this invention is a high-precision, high-temperature-resistant digital temperature sensor with a one-wire bus interface, featuring small size, high precision, and strong anti-interference capabilities. Attached Figure Description

[0018] Figure 1 A schematic diagram of the structure of a mine explosion-proof switch temperature detection device provided in this embodiment of the present invention;

[0019] Figure 2 A schematic diagram of the wireless temperature detection module in the mine explosion-proof switch temperature detection device provided in this embodiment of the utility model;

[0020] Figure 3 This is a schematic diagram of the signal receiving module in the mine explosion-proof switch temperature detection device provided in the embodiments of this application. Detailed Implementation

[0021] The present solution will now be described in conjunction with the accompanying drawings and specific embodiments.

[0022] Downhole equipment needs to be designed with explosion-proof enclosures due to the presence of explosive gases. However, for wireless temperature transmission units, the receiving module and the transmitting module are separated in different cavities, and the signal is completely shielded. In order for the signal to be received, through-wall terminals need to be used in different cavities. Onboard antennas are installed on the through-wall terminals to provide a channel for signal transmission.

[0023] In response, this application proposes a temperature detection device for explosion-proof switches used in mines, see [link to relevant documentation]. Figure 1 The present application provides a schematic diagram of the structure of a temperature detection device for a mine explosion-proof switch, including: a wireless temperature detection module and an antenna disposed in the first cavity of the mine explosion-proof switch; the antenna is electrically connected to a signal receiving module disposed in the second cavity of the mine explosion-proof switch through a wall-penetrating terminal; and the signal receiving module is electrically connected to the controller of the mine explosion-proof switch.

[0024] See Figure 2 The schematic diagram of the wireless temperature detection module provided in this application embodiment shows that the wireless temperature detection module includes a temperature sensor and a first microprocessor electrically connected to the output terminal of the temperature sensor. The output terminal of the first microprocessor is electrically connected to the wireless transmission module, and the wireless transmission module is communicatively connected to the antenna.

[0025] In this embodiment, the wireless transmitting unit adopts a CCMPATR2.4 highly integrated, low-power, high-performance transceiver chip capable of long-distance transmission. It can be configured with multiple transceiver channels and flexibly configure multiple channels. It can quickly switch frequency points and includes multiple signal modulation methods such as FSK, GFSK, ASK, and MSK. It can control power output to achieve optimized matching of power consumption and transmission distance in combination with actual application scenarios.

[0026] The temperature sensor employs a high-precision, high-temperature-resistant digital temperature sensor with a one-wire bus interface. Its measurement range is -55℃ to +125℃, with an accuracy of ±0.5℃. It features small size, high precision, and strong anti-interference capabilities. After acquiring the temperature, the digital temperature sensor sends it as digital pulses to the signal processing element. The microprocessor modulates the digital temperature signal and the sensor address code onto a set carrier frequency and transmits it wirelessly to the signal receiving module.

[0027] Because critical connection points such as the incoming and outgoing terminals and circuit breaker contacts within mine explosion-proof switches are prone to abnormal temperature rises that could lead to safety accidents, wireless temperature measurement is crucial. To address this, in this embodiment, the first cavity of the mine explosion-proof switch is equipped with terminals and circuit breaker contacts, and a temperature sensor is fixedly mounted on the terminals and / or circuit breaker contacts via a wrist strap. Multiple temperature sensors can be provided, with only one sensor installed on each terminal or circuit breaker contact.

[0028] See Figure 3 The schematic diagram of the signal receiving module provided in this application embodiment shows that the signal receiving module integrates digital temperature signal processing, on-site temperature display, alarm and protection temperature upper limit setting and modification, alarm prompt and protection output, event and over-temperature recording. It includes a wireless receiving unit and a second microcontroller electrically connected to the wireless receiving unit. The second microcontroller is electrically connected to the first terminal of the controller of the mine explosion-proof switch through a communication interface. The second terminal of the main controller of the mine explosion-proof switch is electrically connected to the host computer and the display screen respectively.

[0029] In this embodiment, the display screen adopts a high-resolution and high-contrast 7-inch color industrial screen. The screen content is clearly visible in both bright outdoor environments and dimly lit corners underground. The temperature display page can display 12 real-time temperature values ​​simultaneously. The address codes and receiving channels of 12 wireless transmission modules can also be set through the settings page. Alarm and protection upper limits can also be set. When any temperature reaches the set alarm value, the display screen will flash to show its location and temperature value. If the protection value is reached, the main controller will output protection and display it on the display screen.

[0030] In this embodiment, the controller of the mine explosion-proof switch mainly performs high-speed digital signal processing, A / D conversion, and communication. It includes serial port communication, storage circuitry, A / D converter circuitry, and discrete input circuitry. Its DSP core processor has an instruction cycle of 50ns, contains on-chip RAM, and possesses powerful event management capabilities. The dual 12-bit analog-to-digital conversion control module significantly improves the accuracy of converting temperature digital signals into analog signals for display.

[0031] The controller of the mine explosion-proof switch is also equipped with a communication interface with the host computer. The host computer can set and modify the address code and receiving channel of the 12-channel transmitting module, and can also set the upper limit value of alarm and protection.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0033] The above description is merely a specific embodiment of this utility model. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. The protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A temperature detecting device for a mine explosion-proof switch, characterized by comprising: The application relates to a mine-used explosion-proof switch, which comprises the following: A wireless temperature detection module and an antenna are arranged in a first cavity of the mine-used explosion-proof switch, the antenna is electrically connected with a signal receiving module arranged in a second cavity of the mine-used explosion-proof switch through a wall-penetrating terminal, the signal receiving module is electrically connected with a controller of the mine-used explosion-proof switch, the wireless temperature detection module comprises a temperature sensor and a first microprocessor electrically connected with an output end of the temperature sensor, an output end of the first microprocessor is electrically connected with an input end of a wireless transmitting module, the wireless transmitting module is in communication connection with the antenna, the temperature sensor is fixedly arranged on a wiring terminal and / or a circuit breaker contact in the first cavity of the mine-used explosion-proof switch through a fixed wrist strap, the signal receiving module comprises a wireless receiving unit and a second microcontroller electrically connected with the wireless receiving unit, the second microcontroller is electrically connected with a first end of the controller of the mine-used explosion-proof switch through a communication interface, a second end of the controller of the mine-used explosion-proof switch is respectively electrically connected with an upper computer and a display screen.

2. The temperature detection device for mine explosion-proof switch according to claim 1, characterized in that, The wireless transmitting module adopts a CCMPATR2.4 high integration, long-distance transmission, low-power-consumption and high-performance transceiving chip.

3. The temperature detection device for mine explosion-proof switch according to claim 1, characterized in that, The temperature sensor adopts a high-precision and high-temperature-resistant digital temperature sensor with a one-wire bus interface.

4. The temperature detection device for mine explosion-proof switch according to claim 1, characterized in that, The temperature sensor is provided with a plurality of temperature sensors, and only one temperature sensor is arranged on each wiring terminal or circuit breaker contact.

5. The temperature detection device for mine explosion-proof switch according to claim 1, characterized in that, The display screen adopts a color industrial screen.

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