Coal flow instrument

Abstract

The utility model relates to a coal flow instrument. A core module, a laser scanner and a power supply module are arranged in a shell of the coal flow instrument; the laser scanner is in transmission connection with the core module, the core module is provided with an edge calculation module for processing collected high-frequency laser data, and the core module is further provided with an interface for receiving a speed signal of transmission equipment and an interface for outputting a signal for controlling the speed of the transmission equipment. According to the utility model, the laser data of the coal flow profile is obtained through the laser scanner, the specific coal flow is calculated after the laser data passes through the edge calculation module, and the core module can also output a signal for controlling the speed of the transmission equipment by receiving a speed signal of the transmission equipment and according to the calculated coal flow data, so that the transmission efficiency of the transmission equipment is improved; and the transmission equipment is more energy-saving. According to the utility model, the laser scanner is adopted to collect the edge data of the coal flow, the precision is higher, and the calculated coal flow data is more accurate.

Description

Technical Field

[0001] The utility model relates to the technical field of coal flow detection for mines, in particular to a coal flow meter for mines. Background Art

[0002] Data show that the total installed load of conveying equipment accounts for 30% of the total power load of coal mines. When lightly loaded or unloaded, it still runs at a fixed speed, resulting in a large amount of electricity waste. When the coal flow is small or there is no coal, the conveying equipment still runs at full speed, which will cause unnecessary wear and tear on the mechanical transmission system, shorten its service life, and increase maintenance and spare parts costs. As for the measurement of coal flow, the early measurement method was mainly based on belt scales, but the mechanical response speed of belt scales was low, the calculation results were not accurate enough, and the mechanical part needed regular maintenance and repair in the later stage, and was gradually eliminated. The current measurement method often uses cameras or lidars. Due to the low measurement frequency of cameras, the excessive transmission speed of belt conveyors will cause frame loss, thereby reducing accuracy. Lidars usually cause inaccurate measurements due to measurement angle problems, affecting measurement accuracy. Utility Model Content

[0003] The utility model aims to provide a coal flow meter to solve the problem of inaccurate measurement accuracy when using a camera or a laser radar to measure the load of a transmission device in the prior art.

[0004] In order to solve the above problems, the coal flow meter involved in the utility model adopts the following technical solution: a coal flow meter, including a shell, in which a core module, a laser scanner, and a power module are arranged; the core module, the laser scanner and the power module are connected to realize power supply, and the laser scanner is connected to the core module for transmission. The core module is provided with an edge computing module for processing the collected high-frequency laser data, and the core module also has an interface for receiving the speed signal of the transmission equipment and an interface for outputting the signal for controlling the speed of the transmission equipment.

[0005] The core module has an independent switch board, which is connected to the power supply module to realize power supply, and the core module outputs and receives signals through the switch board.

[0006] The interfaces of the switch board for outputting and receiving signals include one RS485 communication port, one CAN communication transmission port, two Ethernet electrical interfaces, and two Ethernet optical interfaces.

[0007] A glass slope is arranged at the lower part of the shell at the laser scanner, and the collection plane of the laser scanner is parallel to the glass slope.

[0008] The shell is provided with two cavities, a scanner cavity and an electrical cavity, and holes for air exchange and wiring are provided between the scanner cavity and the electrical cavity.

[0009] The electrical appliance cavity is provided with an electrical appliance isolation baffle for isolating strong electricity and weak electricity.

[0010] The core module receives the speed signal of the transmission device by transmitting the speed data from the encoder.

[0011] The power supply module is a power supply module that can be directly connected to an AC127V power supply.

[0012] The utility model obtains the laser data of the coal flow contour through the laser scanner, and the laser data is calculated by the edge computing module to calculate the specific coal flow. The core module can also receive the speed signal of the transmission equipment and output the signal to control the speed of the transmission equipment according to the calculated coal flow data, thereby improving the transmission efficiency of the transmission equipment and making the transmission equipment more energy-efficient. The utility model uses a laser scanner to collect the edge data of the coal flow, which has high accuracy, and the coal flow data calculated is also relatively accurate.

[0013] The core module of the utility model transmits data to the front end through the CAN, RS485, Ethernet optical / electrical transmission interfaces of the switch board, realizes the access of multiple transmission signals, and improves the adaptability of different interfaces in coal mines.

[0014] The lower part of the shell of the utility model is provided with a glass slope at the laser scanner, and the acquisition plane of the laser scanner is parallel to the glass slope, that is, the laser scanner is placed obliquely in the shell, thereby improving the scanning accuracy of a single scanner. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solution of the embodiment of the utility model, the following is a brief introduction to the drawings required for use in the embodiment:

[0016] Figure 1 A side view of an embodiment of the utility model;

[0017] Figure 2 A top view of an embodiment of the utility model;

[0018] Figure 3 The electrical schematic diagram of an embodiment of the utility model. DETAILED DESCRIPTION

[0019] In order to make the technical purpose, technical solution and beneficial effects of the utility model clearer, the technical solution of the utility model is further described below in conjunction with the drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model, that is, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The components of the embodiments of the utility model described and shown in the drawings can be arranged and designed in various different configurations.

[0020] The specific embodiment of the coal flow meter involved in the utility model is Figure 1-3 In the embodiment, the inner cavity of the housing 1 is divided into two cavities: a scanner cavity 2 and an electrical cavity 3, and holes for air exchange and wiring are provided between the scanner cavity and the electrical cavity. At the same time, an electrical isolation baffle is provided in the electrical cavity to isolate strong electricity and weak electricity. A laser scanner 4 is provided in the scanner cavity, and a core module is provided in the electrical cavity. The core module and the laser scanner are connected to the power module to realize power supply. The core module has an independent switch board, and the switch board is also connected to the power module to realize power supply. The power module is a power module that can directly connect to an AC127V power supply. The switch board has one RS485 communication port, one CAN communication transmission port, two Ethernet electrical interfaces, and two Ethernet optical interfaces for the core module to transmit and output signals. An edge computing module is integrated on the core module. The core module receives high-frequency laser data from the laser scanner, calculates through the edge computing module, obtains coal flow data, and realizes speed monitoring of the transmission equipment through the encoder installed on the transmission equipment. The core module transmits the speed signal from the encoder through the switch board, thereby mastering the speed data of the transmission equipment. The core module outputs a signal to adjust the speed of the transmission equipment based on the coal flow data obtained by the edge computing module so that the speed adapts to the load. The corresponding relationship between load and speed is obtained from daily production and is common knowledge to technical personnel in this field.

[0021] A glass slope is arranged at the laser scanner at the lower part of the shell, and the collection plane of the laser scanner is parallel to the glass slope.

[0022] The functions that the coal flow meter can achieve include real-time measurement of the coal flow of the conveying equipment and displaying coal flow related data on the host computer, including pile height, cross-sectional area, coal flow and other information. The coal flow meter can also transmit data with the host computer through a variety of transmission methods, and can also read the transmission speed of the conveying equipment through other devices or external encoders and control the transmission equipment speed according to the instantaneous coal flow, so as to achieve energy saving and increase equipment life.

[0023] The shell of the coal flow meter is divided into a scanner cavity and an electrical cavity. The laser scanner is placed in the scanner cavity. The lower part of the scanner cavity is a glass surface slope. The glass is explosion-proof glass, and the entire shell adopts a flameproof and intrinsically safe design. The scanner is parallel to the scanning glass slope, so that the side profile of the object can be scanned, avoiding the error caused by vertical scanning of the object profile. The laser scanner also ensures that the profile of the material transported by the transmission equipment can be accurately read in the dark environment of the coal mine, improving the scanning accuracy.

[0024] The electrical cavity includes the core module, switch board, power module, electrical design drawings such as Figure 3In this example, the contour data of the object scanned by the scanner is transmitted to the core module, that is, the distance h of each measuring point on each section is output. i , the area element ΔS is calculated by the edge computing module i Based on this, the cross-sectional area S of the coal seam on the scraper can be calculated, and the information such as the outer contour and coordinate positioning can be obtained. Then, by introducing the running speed v of the scraper, the volume V of the coal flow can be calculated, and thus the real-time coal flow Q of the scraper can be obtained.

[0025] Q(t)=ρV(t)

[0026] The edge computing module is a module in the prior art.

[0027] In this embodiment, a high-performance edge computing module and a control module are integrated in the core module. The edge computing module can ensure that the scanner can stably calculate the instantaneous coal flow rate after scanning the data at a high frequency, and leave sufficient margin for subsequent complex calculations such as speed regulation and conveying equipment. The control module is responsible for controlling the control of each module and the transmission of data. It is connected to the switch board through an Ethernet electrical port for transmitting data to the outside, and integrates a temperature measurement circuit to measure the temperature of the core module and the scanner respectively to prevent the instrument and the mainboard from overheating and damage due to excessive temperature. The switch board contains a wealth of external transmission interfaces, including one RS485 communication port, one CAN communication transmission port, two Ethernet electrical interfaces, and two Ethernet optical interfaces, which can realize a variety of external transmission methods and improve the universality of the coal flow meter in different transmission environments.

[0028] In this example, the coal flow meter can read the transmission speed of the transmission equipment through other external devices or a self-connected encoder, and can obtain the instantaneous coal flow rate through a scanner. Through the built-in edge computing module, it can calculate whether the current device transmission speed can match the instantaneous coal flow rate, thereby adjusting the transmission speed of the transmission equipment to achieve the functions of energy saving, extending the service life of the transmission equipment, and reducing maintenance costs.

[0029] The power module includes AC / DCRPS-65-24 power supply, DC24 / DC5 and DC24 / DC12 current limiting protection circuits. RPS-65-24 converts external AC127V input to DC24V output to power the scanner and other subsequent modules. DC24 / DC5 converts DC24V input to DC5 output to power the core module and edge computing module. DC24 / DC12 converts DC24V input to DC12 output to power other devices. When the power module and the core module are installed in the electrical cavity, an electrical isolation baffle is installed to prevent the power module from interfering with the core module and affecting the performance of the core module.

[0030] The conveying equipment in this embodiment is a scraper conveyor, and in other embodiments it can be any coal conveying equipment in the prior art.

[0031] The core module in this embodiment transmits and outputs signals through an independent switch board. In other embodiments, the data exchange interface may also be integrated on the core module.

[0032] In this embodiment, a glass slope is arranged at the lower part of the shell at the laser scanner, and the acquisition plane of the laser scanner is parallel to the glass slope. In other implementation examples, the laser scanner may also adopt other installation methods and installation angles.

[0033] The core module in this embodiment receives the speed signal of the transmission device by transmitting the rotation speed data from the encoder. In other embodiments, other speed monitoring devices in the prior art may also be used.

[0034] In this embodiment, monitoring the speed of the transmission device by an encoder and changing the speed of the transmission device by a control signal are both existing technologies.

[0035] The core module in this embodiment is a core module with edge computing, which is a commercially available part and is programmed according to specific needs when used.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate but not to limit the technical solutions of the present invention, and any equivalent substitutions of the present invention and any modifications or partial substitutions that do not depart from the spirit and scope of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. A coal flow meter, characterized in that: The invention comprises a shell, in which a core module, a laser scanner and a power module are arranged; the core module and the laser scanner are connected to the power module for power supply, the laser scanner is connected to the core module for transmission, the core module is provided with an edge computing module for processing the collected high-frequency laser data, and the core module also has an interface for receiving the speed signal of the transmission equipment and an interface for outputting the signal for controlling the speed of the transmission equipment.

2. The coal flow meter according to claim 1, characterized in that: The core module has an independent switch board, which is connected to the power supply module to realize power supply, and the core module outputs and receives signals through the switch board.

3. The coal flow meter according to claim 2, characterized in that: The interfaces of the switch board for outputting and receiving signals include one RS485 communication port, one CAN communication transmission port, two Ethernet electrical interfaces, and two Ethernet optical interfaces.

4. The coal flow meter according to claim 1, 2 or 3, characterized in that: A glass slope is arranged at the lower part of the shell at the laser scanner, and the collection plane of the laser scanner is parallel to the glass slope.

5. The coal flow meter according to claim 4, characterized in that: The shell is provided with two cavities, a scanner cavity and an electrical cavity, and holes for air exchange and wiring are provided between the scanner cavity and the electrical cavity.

6. The coal flow meter according to claim 5, characterized in that: The electrical appliance cavity is provided with an electrical appliance isolation baffle for isolating strong electricity and weak electricity.

7. The coal flow meter according to claim 6, characterized in that: The core module receives the speed signal of the transmission device by transmitting the speed data from the encoder.

8. The coal flow meter according to claim 7, characterized in that: The power supply module is a power supply module that can be directly connected to an AC127V power supply.

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