Multi-point temperature detector special for mine blasting pit

Abstract

The invention relates to the field of mine hole blasting, and discloses a special multipoint temperature detector for a mine hole blasting pit, which comprises more than ten temperature sensors, each temperature sensor is configured to measure the temperature of different positions in the mine hole blasting pit and convert the measured temperature data into an electric signal; and the MCU master controller is connected with the temperature sensor, and the MCU master controller is configured to receive the digital temperature data and process the data so as to obtain real-time information of multi-point temperature in the mine hole blasting pit. According to the invention, by adopting a multi-point temperature detection design, a plurality of positions and depths in a mine hole blasting hole can be covered, the temperature sensor adopts a cascade design and adapts to blasting holes of various depths, the flexibility and adaptability of measurement are improved, and the battery voltage is collected in real time through the AD module; and the acquired temperature, the battery voltage value and the related set parameters of each path are transmitted to a mobile phone App end in a Bluetooth mode according to a set interval.

Description

Technical Field

[0001] The invention relates to the field of mine blasting, and in particular to a multi-point temperature detector specially used for mine blasting pits. Background Art

[0002] In the process of mining mineral resources, blasting operation is an indispensable part. In order to ensure the safety and effectiveness of blasting operation, it is particularly important to monitor the temperature of blasting holes accurately and in real time. However, the mining environment is complex and changeable, especially inside the blasting holes, which often face harsh conditions such as high temperature, high pressure, humidity and dust, which poses a severe challenge to temperature detection.

[0003] Traditional non-contact temperature measurement methods, such as full radiation method, partial radiation method, brightness method and colorimetry method, have the advantages of wide temperature measurement range and fast response speed, but they are subject to many limitations in the application of temperature measurement in mine blasting holes. Due to the influence of external environmental factors such as smoke, water vapor, etc. in the mine, the accuracy of non-contact temperature measurement is often difficult to guarantee, the measurement error is large, and it cannot meet the demand for precise temperature control in blasting operations.

[0004] Although the contact temperature measurement method has high accuracy, its measurement range is limited and it can only perform single-point detection. The blasting holes in mines are often deep and the environment is harsh, making the contact temperature measurement method difficult to use in practical applications. Especially under high temperature, high pressure, humidity and water conditions, the contact temperature measurement element is easily damaged and cannot work stably for a long time.

[0005] What is more serious is that due to the lack of accurate monitoring of the blasting hole temperature, or the failure to take timely cooling measures due to large measurement errors, the explosives exploded prematurely under the action of high temperature, which not only affected the effect of the blasting operation, but also caused serious casualties when personnel were not completely evacuated, causing huge economic losses and social impacts to mining companies. Summary of the invention

[0006] In order to solve the above-mentioned problems, the present invention is implemented through the following technical solutions.

[0007] A multi-point temperature detector specially used for mine blasting pits, comprising: more than ten temperature sensors, each of which is configured to measure the temperature at different positions in the mine blasting pit and convert the measured temperature data into electrical signals; an MCU main control, which is connected to the temperature sensor and configured to receive digital temperature data and process the data to obtain real-time information on the temperature of multiple points in the mine blasting pit; an AD module, which is connected to the MCU main control and configured to convert the voltage of a battery into a digital signal and detect the battery power in real time; a Bluetooth module, which is connected to the MCU main control and configured to transmit the multi-point temperature data processed by the MCU main control to an external receiving device via a wired or wireless method; a 485 serial port module, which is electrically connected to the MCU main control and the temperature sensor is connected to the MCU main control via the 485 serial port module and the 485 serial port module is used for data transmission; and a power management, which is connected to the MCU main control and is used to provide power for the detector.

[0008] The multi-point temperature detector also includes: a battery, which is connected to the power management, the battery is connected to the AD module, the battery is connected to the MCU main control through the power management, and the battery is used to provide power support for each module in the detector.

[0009] Batteries include: Rechargeable polymer lithium battery, connected to power management.

[0010] The multi-point temperature detector also includes: a mobile phone terminal, which is connected to the Bluetooth module. The mobile phone terminal is configured to display the temperature data of multiple temperature sensors in real time, generate temperature curves of each channel, and provide operation functions of sensor power switch and temperature upload interval setting, which is used to grasp the temperature conditions in the mine blasting pit.

[0011] The nodes of the temperature sensor adopt a cascade design to adapt to blasting pits of various depths, and the temperature sensor is powered by a battery.

[0012] The 485 serial port module includes: a serial port communication line, connected with the 485 serial port module.

[0013] The 485+ of the temperature sensor is connected to the 485+ of the serial communication line, and the 485- of the temperature sensor is connected to the 485- of the serial communication line. The length of the 485+ signal line and the 485- signal line of the temperature sensor are the same.

[0014] The 485 serial port module also includes: a counterweight block connected to the end of the serial port communication line, and the counterweight block is used to provide gravity stretching for the serial port communication line.

[0015] The temperature sensor is connected to the 485 serial port module through a waterproof connector.

[0016] The present invention provides a multi-point temperature detector specially used for mine blasting pits. Compared with the prior art, it has the following beneficial effects: this solution adopts a multi-point temperature detection design, which can cover multiple positions and depths in the mine blasting hole, overcomes the disadvantage of the limited measurement range of the contact temperature measurement method, and the temperature sensor adopts a cascade design, which can be configured at will to adapt to blasting pits of various depths, improves the flexibility and adaptability of the measurement, collects the battery voltage in real time through the AD module, and transmits the collected temperature, battery AD voltage value and related setting parameters to the mobile phone App end through Bluetooth at the set interval. The MCU main control is responsible for receiving, processing and controlling the data and work flow of each module, ensuring the accuracy and reliability of the data, avoiding the premature explosion of explosives under high temperature, and reducing the risk of casualties. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural framework diagram proposed by the present invention.

[0018] Figure 2 This is a schematic diagram of the connection between the 485 serial port module and the temperature sensor proposed in the present invention.

[0019] Figure 3 This is the wiring diagram of the 485 serial port module and the temperature sensor proposed in the present invention.

[0020] Figure 4 This is the 485 serial communication circuit diagram proposed by the present invention.

[0021] Figure 5 This is the MCU main control circuit diagram proposed by the present invention.

[0022] Figure 6 This is a circuit diagram of the Bluetooth module proposed by the present invention.

[0023] The reference numerals in the figure are: 1. Battery; 2. Power management; 3. MCU main control; 4. 485 serial port module; 5. Bluetooth module; 6. Temperature sensor; 7. Mobile phone; 8. AD module. DETAILED DESCRIPTION

[0024] The present invention is further described below in conjunction with specific examples. It should be understood that these examples are only used to illustrate the present invention and are not used to limit the scope of protection of the present invention.

[0025] The following describes the embodiments of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention.

[0026] Embodiment 1 Reference Figure 1-Figure 6 , a multi-point temperature detector specially used for mine blasting pits, comprising: temperature sensors 6, the number of which is more than ten, each temperature sensor 6 is configured to measure the temperature of different positions in the mine blasting pit, and convert the measured temperature data into electrical signals; MCU main control 3, MCU main control 3 is connected to the temperature sensor 6, MCU main control 3 is configured to receive digital temperature data, process the data to obtain real-time information on the temperature of multiple points in the mine blasting pit, and MCU main control 3 is also responsible for receiving, processing and controlling the data and work flow of each module; AD module 8, connected to MCU main control 3, AD module 8 is configured to convert the voltage of battery 1 into a digital signal, and detect the power of battery 1 in real time; Bluetooth module 5, connected to M CU main control 3 is connected, the Bluetooth module 5 is configured to transmit the multi-point temperature data processed by the MCU main control 3 to an external receiving device by wired or wireless means, and the Bluetooth module 5 transmits the multi-point temperature data processed by the MCU to an external receiving device by wireless means, such as a mobile phone APP; the 485 serial port module 4 is electrically connected to the MCU main control 3, the temperature sensor 6 is connected to the MCU main control 3 through the 485 serial port module 4, and the 485 serial port module 4 is used for data transmission; the power management 2 is connected to the MCU main control 3, the power management 2 is used to provide power for the detector, and the power management 2 provides stable power for the entire detector to ensure that each module can work normally and support long-term work outdoors.

[0027] A combination of 6 multi-channel temperature sensors, each sensor unit is configured to measure the temperature at different depths or positions in the mine blasting pit, and convert the measured temperature data into electrical signals. All 6 temperature sensor nodes adopt a cascade design and can be configured at will, suitable for blasting pits of various depths. The entire detector adopts an integrated design, which is waterproof, shock-resistant and anti-interference, and can work normally in harsh mining environments.

[0028] After the host is powered on, the Bluetooth module 5 is initialized first and waits for Bluetooth matching. At this time, the power of the temperature sensor 6 is turned off. If there is no Bluetooth matching for a long time, the host enters sleep mode to save power consumption; after the Bluetooth matching is successful, the 485 serial port module 4 is initialized, and the power of the temperature sensor 6 is turned on synchronously, and the temperature of each temperature sensor 6 is collected at the set interval; after the Bluetooth matching is successful, the AD module 8 is initialized synchronously to collect the voltage of the battery 1 in real time; the collected temperatures, battery AD voltage values ​​and related set parameters of each channel are transmitted to the mobile phone App via Bluetooth at the set interval; the host has a built-in large-capacity rechargeable battery 1, which can support long-term work outside; the battery 1 will automatically charge when the main power is connected; the host device uses sealing materials such as sealing rings and silicone gaskets to ensure the protection effect of the shell joints. Use integrated design to reduce interfaces and gaps and improve overall sealing. Use shock-absorbing materials such as rubber pads and foam materials inside the host device to absorb vibration and impact. Reinforce the package of internal electronic components and use epoxy resin potting to increase shock resistance. Form a protective coating on the surface of the host metal casing to improve the corrosion resistance of the equipment. Use shielded cables to connect the host device to reduce electromagnetic radiation and interference.

[0029] Battery 1 is connected to power management 2, battery 1 is connected to AD module 8, battery 1 is connected to MCU main control 3 through power management 2, and battery 1 is used to provide power support for various modules in the detector; battery 1 includes: a rechargeable polymer lithium battery 1, connected to power management 2, serving as the power source of the detector, providing long-lasting and reliable power support.

[0030] The mobile phone terminal 7 is connected to the Bluetooth module 5. The mobile phone terminal 7 is configured to display the temperature data of multiple temperature sensors 6 in real time, generate temperature curves for each channel, and provide operation functions of sensor power switch and temperature upload interval setting, which is used to grasp the temperature conditions in the mine blasting pit. The mobile phone terminal 7 is configured to receive and display the temperature data from the hardware host in real time, generate a temperature curve, provide operation functions such as sensor power switch, temperature upload interval setting and warning temperature value setting, and issue an alarm reminder and record the alarm information when the temperature exceeds the warning value; the mobile phone APP terminal is also configured with a battery 1 power display function, which promptly reminds the user to charge when the power is low, and for temperature alarms, corresponding measures are taken to cool down and then retest, and the next step can be performed after the temperature returns to normal.

[0031] The nodes of the temperature sensor 6 adopt a cascade design to adapt to blasting pits of various depths. The temperature sensor 6 is powered by the battery 1.

[0032] The 485 serial port module 4 includes: a serial port communication line connected to the 485 serial port module 4.

[0033] The 485+ of the temperature sensor 6 is connected to the 485+ of the serial communication line, and the 485- of the temperature sensor 6 is connected to the 485- of the serial communication line. The length of the 485+ signal line and the 485- signal line of the temperature sensor 6 are the same; the cascade between the temperature sensor 6 units adopts a master-slave design, the 485+ of the temperature sensor 6 is connected to the 485+ of the communication bus, and the 485- is connected to the 485- of the communication bus to ensure that the connection is stable and correct. At the same time, try to keep the length of the signal line of each temperature sensor 6 node consistent, use shielded wires to connect the ground wires of all temperature sensors 6 to avoid affecting the potential difference of communication, and connect terminal resistors in parallel to the temperature sensors 6 at the head and tail to improve the communication quality.

[0034] Each temperature sensor 6 is powered by a unified power supply and connected to the same 485 serial communication line. All temperature sensors 6 are slaves. When the host queries, they will only reply if the ID matches. The temperature sensors 6 on the communication line will not be repeated and work independently without affecting each other. The sensor part has no battery 1, and is connected to the host with a DEUTSCH waterproof connector. After the connector is buckled, the connector will not fall off under force, and the internal line sequence will not be stretched under force, which is very suitable for these application scenarios. The connector includes power, ground, and two 485 serial communication lines, a total of four lines; The wiring on the sensor side is ten meters long, with a connector for connecting to the sensor every one meter. The connector is also waterproof. The outermost layer is wrapped with polyester waterproof fabric, which has excellent waterproof and breathable properties. It is soft, light, and wear-resistant. It also has good tensile properties and durability, and is suitable for working in harsh environments.

[0035] The temperature sensor 6 is connected to the 485 serial port module 4 through a waterproof connector. The temperature sensor 6 is connected to the hardware host through a DEUTSCH waterproof connector. The connector will not fall off after being buckled, the internal line sequence will not be stretched, and the outermost layer is wrapped with polyester waterproof fabric, which has excellent waterproof and breathable properties and can adapt to working in harsh environments.

[0036] The cascade part of each temperature sensor 6 adopts a master-slave design, with the host querying and the slave responding; only the host device is the host, and all temperature sensors 6 are slaves. The 485+ of all temperature sensors 6 are connected to the 485+ of the communication bus, and the 485- is connected to the 485- of the communication bus to ensure that the connection is stable and correct; try to keep the length of the 485+ and 485- signal lines of each temperature sensor 6 node consistent to avoid interference to the signal transmission caused by being too long or too short; use shielded wires to connect the ground wires of all temperature sensors to avoid the potential difference between the host and the temperature sensor 6 that affects the communication; connect a 120-ohm terminal resistor in parallel to the 485+ and 485- of the temperature sensor 6 at the head and tail to improve the communication quality; up to ten levels of temperature sensors 6 can be used flexibly by selecting the number of cascades according to the actual pit depth.

[0037] Mobile App: Turn on the Bluetooth function, and after successfully matching the Bluetooth of the hardware host, open the multi-point temperature measurement display App; click to turn on the power of the temperature sensor 6 in the App to display the temperature value of each channel in real time; the App simultaneously displays the temperature and time curve of each temperature sensor 6; the App can set the warning temperature value, and when the temperature exceeds the set warning value, there will be a corresponding alarm reminder. And record the alarm information such as time, the temperature of the channel and the temperature value; the App will synchronously display the battery power of the host 1, and it can be charged in time before the display is insufficient; for temperature alarms, after taking corresponding measures to cool down, re-testing is required, and the next step can be performed only after the temperature is normal; accurately measure and record the temperature of different positions of the hole in real time, and handle the alarm for exceeding the safe temperature value; at the same time, manual cooling can prevent safety accidents involving casualties and avoid unnecessary economic losses.

[0038] Embodiment 2 Reference Figure 2 The difference between this embodiment and the first embodiment is that: a counterweight block is connected to the end of the serial communication line. The counterweight block is used to provide gravity stretching for the serial communication line. The counterweight block is a solid iron ball. When in use, a 500-gram solid round ball can be hung at the bottom of the communication connection. During testing, the communication line is stretched by gravity, which can make the sensor distribution more even.

[0039] During use, after the host is powered on, the Bluetooth module 5 is initialized first and enters the state of waiting for Bluetooth matching. The power of the temperature sensor 6 is turned off to save power consumption. If the Bluetooth module 5 fails to successfully match within the set time, the host will enter the sleep mode to further reduce power consumption. When the external receiving device (such as a mobile phone APP) turns on the Bluetooth function and searches for the host Bluetooth signal, Bluetooth matching is performed. After the Bluetooth matching is successful, the host will initialize the 485 serial port module 4 and simultaneously turn on the power of the temperature sensor 6. The temperature sensor 6 starts working and collects the temperature data of each location according to the set interval time, and converts these data into electrical signals. The MCU main control 3 receives these digital temperature data and processes them to obtain real-time information on the temperature of multiple points in the mine blasting pit. The Bluetooth module 5 transmits the multi-point temperature data processed by the MCU main control 3 to the external receiving device by wireless means. The mobile phone APP receives and displays these temperature data, and generates various temperature curves at the same time, so that the user can grasp the temperature conditions in the mine blasting pit in real time. The AD module 8 collects the voltage of the battery 1 in real time, and transmits this information to the mobile phone APP through the Bluetooth module 5. The mobile phone APP displays the voltage of the battery 1. When the battery is low, it will remind the user to charge in time. When the host is connected to the main power supply, the battery 1 will be automatically charged to ensure that the detector can work outside for a long time. The mobile phone APP provides operation functions such as sensor power switch, temperature upload interval setting and warning temperature value setting. When the temperature exceeds the warning value, the mobile phone APP will issue an alarm reminder and record the alarm information, such as time, temperature of the first channel and temperature value. The user needs to take corresponding measures to cool down according to the alarm information, and retest after the temperature returns to normal to ensure safety. The host equipment uses sealing materials such as sealing rings and silicone gaskets, as well as a The integrated design reduces interfaces and gaps, improves overall sealing, uses shock-absorbing materials to absorb vibration and impact, reinforces and packages internal electronic components to increase seismic resistance, forms a protective coating on the surface of the host metal shell to improve the corrosion resistance of the equipment, uses shielded cables to connect the host equipment to reduce electromagnetic radiation and interference, and the temperature sensor 6 adopts a cascade design and is connected to the host through the 485 serial port module 4. All temperature sensors 6 are slaves. When the host queries, they will only reply if the ID matches. Use shielded wires to connect the ground wires of all temperature sensors 6 to avoid potential differences that affect communication. Connect terminal resistors in parallel to the temperature sensors 6 at the head and tail to improve communication quality. Select the number of cascades according to the actual pit depth and use them flexibly.

[0040] In summary, compared with the prior art, the present invention has the following beneficial effects: This solution adopts a multi-point temperature detection design, which can cover multiple positions and depths within the mine blasting hole, overcoming the disadvantage of the limited measurement range of the contact temperature measurement method. The temperature sensor 6 adopts a cascade design and can be configured at will to adapt to blasting pits of various depths, thereby improving the flexibility and adaptability of the measurement.

[0041] The battery voltage is collected in real time through the AD module 8, and the collected temperatures, battery AD voltage values ​​and related setting parameters are transmitted to the mobile phone App via Bluetooth at set intervals. The power level of the battery 1 can be detected in real time. The MCU main control 3 is responsible for receiving, processing and controlling the data and work processes of each module, ensuring the accuracy and reliability of the data.

[0042] This solution adopts the principle of non-contact temperature measurement (although the temperature sensor 6 itself still requires physical contact, the data acquisition and transmission process is non-contact), avoiding the problem of damage to the temperature measuring components caused by harsh environments such as high temperature, high pressure, humidity and water. The mobile phone APP can display the temperature data of multiple temperature sensors 6 in real time and generate a temperature curve graph, so that users can intuitively grasp the temperature conditions in the mine blasting pit.

[0043] After setting the warning temperature value, when the temperature exceeds the set value, the mobile phone APP will issue an alarm reminder and record the alarm information, and take cooling measures in time to avoid premature explosion of explosives under high temperature, reducing the risk of casualties.

[0044] Thus, although the invention has been described herein with reference to specific embodiments thereof, freedom of modification, various changes and substitutions are also within the foregoing disclosure, and it should be understood that in some cases, some features of the invention will be employed without the corresponding use of other features without departing from the scope and spirit of the proposed invention. Thus, many modifications may be made to adapt a particular environment or material to the essential scope and spirit of the invention. The invention is not intended to be limited to the specific terms used in the claims below and / or the specific embodiments disclosed as the best mode contemplated for carrying out the invention, but the invention will include any and all embodiments and equivalents falling within the scope of the appended claims. Thus, the scope of the invention will be determined solely by the appended claims.

Claims

1. A multi-point temperature detector specially used for mine blasting pits, characterized in that: include: Temperature sensors (6), the number of which is more than ten, each of which is configured to measure the temperature at different locations in the mine blasting pit and convert the measured temperature data into an electrical signal; An MCU main control (3), the MCU main control (3) being connected to a temperature sensor (6), the MCU main control (3) being configured to receive digital temperature data and process the data to obtain real-time information on the temperature of multiple points in a mine blasting pit; An AD module (8) connected to the MCU main control (3), wherein the AD module (8) is configured to convert the voltage of the battery (1) into a digital signal and detect the power level of the battery (1) in real time; A Bluetooth module (5) connected to the MCU main control (3), the Bluetooth module (5) being configured to transmit the multi-point temperature data processed by the MCU main control (3) to an external receiving device via a wired or wireless method; A 485 serial port module (4) is electrically connected to the MCU main control (3); the temperature sensor (6) is connected to the MCU main control (3) via the 485 serial port module (4); the 485 serial port module (4) is used for data transmission; The power management (2) is connected to the MCU main control (3), and the power management (2) is used to provide electric energy for the detector.

2. A multi-point temperature detector specially used for mine blasting pits according to claim 1, characterized in that: The multi-point temperature detector also includes: The battery (1) is connected to the power management (2), the battery (1) is connected to the AD module (8), the battery (1) is connected to the MCU main control (3) through the power management (2), and the battery (1) is used to provide power support for various modules in the detector.

3. A multi-point temperature detector specially used for mine blasting pits according to claim 2, characterized in that: The battery (1) comprises: A rechargeable polymer lithium battery (1) is connected to the power management (2).

4. The multi-point temperature detector specially used for mine blasting pit according to claim 1 is characterized in that: The multi-point temperature detector also includes: The mobile phone terminal (7) is connected to the Bluetooth module (5), and the mobile phone terminal (7) is configured to display the temperature data of multiple temperature sensors (6) in real time, generate temperature curves of each channel, and provide operation functions of sensor power switch and temperature upload interval setting, so as to grasp the temperature conditions in the mine blasting pit.

5. The multi-point temperature detector specially used for mine blasting pit according to claim 2, characterized in that: The nodes of the temperature sensor (6) adopt a cascade design to adapt to blasting pits of various depths, and the temperature sensor (6) is powered by the battery (1).

6. The multi-point temperature detector specially used for mine blasting pit according to claim 1, characterized in that: The 485 serial port module (4) comprises: The serial port communication line is connected to the 485 serial port module (4).

7. A multi-point temperature detector specially used for mine blasting pits according to claim 6, characterized in that: The 485+ of the temperature sensor (6) is connected to the 485+ of the serial communication line, and the 485- of the temperature sensor (6) is connected to the 485- of the serial communication line. The 485+ signal line and the 485- signal line of the temperature sensor (6) are of the same length.

8. The multi-point temperature detector specially used for mine blasting pit according to claim 6, characterized in that: The 485 serial port module (4) further includes: A counterweight block is connected to the end of the serial communication line, and the counterweight block is used to provide gravity stretching for the serial communication line.

9. The multi-point temperature detector specially used for mine blasting pit according to claim 1, characterized in that: The temperature sensor (6) is connected to the 485 serial port module (4) via a waterproof connector.

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