Mining intrinsic safety type angle sensor circuit

Abstract

The utility model belongs to coal mine control equipment, and particularly relates to a mining intrinsic safety type angle sensor circuit which comprises a power supply part circuit, an angle detection and conversion circuit, a 485 communication circuit, a single chip microcomputer control circuit and an LED drive circuit. The power supply part circuit comprises a first voltage stabilizing module and a second voltage stabilizing module which are connected in series; the angle detection and conversion circuit comprises an angle potentiometer which is arranged on the air door or the air window; the 485 communication circuit comprises a communication module, a driving module and a receiving module, the driving module and the receiving module are both connected with the communication module, and the receiving module is connected with the angle potentiometer; the single-chip microcomputer control circuit comprises a control module and an operation module, the control module transmits digital signals to the operation module, and the storage module processes the digital signals and then transmits the digital signals to the control module. The LED driving circuit comprises an LED driving module, the LED driving module is connected with the driving module, and by the aid of the device, debugging personnel in an underground coal mine can directly observe the opening angle of the air door or the air window.

Description

Technical Field

[0001] The utility model belongs to coal mine control equipment, in particular to a mine-used intrinsically safe angle sensor circuit. Background Art

[0002] Angle sensors are mainly used to test the position of the workpiece angle, which makes it convenient for the control equipment to collect angle signals, such as the opening angle of the damper or wind window. The wind window angle sensor circuit on the market can only transmit the analog value of the angle or the square wave of the encoder to the control host or PLC controller, and the control host or PLC controller observes and controls the opening angle of the damper or wind window. The angle sensor itself does not display the angle data it detects. The debugging personnel in the coal mine cannot directly observe the opening angle of the damper or wind window. It is very inconvenient for the debugging personnel in the coal mine to adjust the opening angle of the damper or wind window, and on-site debugging is not convenient. Summary of the Invention

[0003] The utility model aims to provide a mine-used intrinsically safe angle sensor circuit, which can enable commissioning personnel in coal mines to directly observe the opening angle of air doors or air windows.

[0004] The technical solution of the utility model is: a mine-used intrinsically safe angle sensor circuit, comprising:

[0005] The power supply circuit includes a first voltage stabilizing module and a second voltage stabilizing module connected in series. The first voltage stabilizing module converts a 12V input voltage into a 5V output voltage. The second voltage stabilizing module converts the 5V output voltage of the first voltage stabilizing module into a 3.3V output voltage. The converted 3.3V output voltage is used to power the entire sensor circuit.

[0006] An angle detection conversion circuit, including an angle potentiometer, wherein the angle potentiometer is provided on the damper or window;

[0007] 485 communication circuit, including a communication module, a driving module and a receiving module, wherein the driving module and the receiving module are both connected to the communication module, and the receiving module is connected to the angle potentiometer;

[0008] The single-chip microcomputer control circuit includes a control module and an operation module. The control module is provided with an analog-to-digital conversion circuit, and the analog-to-digital conversion circuit is connected to the communication module in the 485 communication circuit. The control module transmits the digital signal to the operation module, and the operation module processes the received data and transmits the processed data to the control module in the form of a digital signal;

[0009] The LED driving circuit includes an LED driving module and a display module. The LED driving module is connected to the driving module in the 485 communication circuit.

[0010] Furthermore, the computing module processes the data through its internal chip, the chip model of which is STM32F030F4P6TR.

[0011] Furthermore, a power fuse and a diode for protecting the power supply circuit are provided between the first voltage stabilizing module and the power supply.

[0012] Furthermore, a power indicator light is connected to the power supply circuit.

[0013] Furthermore, the single chip control circuit also includes a storage module, which receives the digital signal of the control module and sends the stored digital signal to the control module.

[0014] The beneficial effects of the utility model are as follows: the power supply circuit provides power to the entire mine intrinsically safe angle sensor circuit, the power supply circuit is protected by a power fuse and a diode, and the on / off status of the power supply circuit is displayed by a power indicator light; the angle detection circuit arranged on the damper or window detects the opening angle of the damper or window, and the angle of rotation of the damper or window is converted into a plurality of voltage signals by an angle potentiometer, the angle potentiometer sends the plurality of voltage signals to the single-chip microcomputer control circuit through a 485 communication circuit, the analog-to-digital conversion circuit in the control module converts the voltage signal into a digital signal, the digital signal is stored by a storage module, and the data is processed by a calculation module to obtain relatively accurate data, and the data is sent to the control module in the form of a digital signal, the control module sends the digital signal to the drive module through the communication module, the drive module sends the received digital signal to the LED drive module, and the LED drive module drives the display module after receiving the digital signal, so that the display module displays the value of the opening and closing angle of the damper or window, ensuring that the debugging personnel who adjust the opening angle of the damper or window in the coal mine can observe the opening angle of the damper or window in real time. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0016] Figure 1 It is a specific flow chart of the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the power supply circuit of the utility model. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or components referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention; the terms "first" and "second" are only used for descriptive purposes and should not be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and limited, the terms "installed", "set", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, an indirect connection through an intermediate medium, or it can be internal communication between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0020] like Figure 1-2 As shown in the figure, the mine intrinsically safe angle sensor circuit includes: power supply circuit 1, angle detection conversion circuit 2, 485 communication circuit 3, single chip control circuit 4 and LED drive circuit 5.

[0021] Among them, such as Figure 2 As shown, the power supply circuit 1 includes a first voltage stabilizing module 11 and a second voltage stabilizing module 12 arranged in series. The first voltage stabilizing module 11 converts the 12V input voltage into a 5V output voltage, and the second voltage stabilizing module 12 converts the 5V voltage output by the first voltage stabilizing module 11 into a 3.3V output voltage. The converted 3.3V output voltage is used to power the entire sensor circuit.

[0022] In this embodiment, if Figure 2 As shown, a power fuse 13 and a diode 14 for protecting the power supply circuit 1 are provided between the first voltage stabilizing module 11 and the power supply.

[0023] The power supply circuit 1 is connected to a power indicator light 15 .

[0024] Based on the above embodiment, the 12V voltage at the power supply is converted into a 5V voltage through the first voltage stabilizing module 11, and the 5V voltage is converted into 3.3V through the second voltage stabilizing module 12. At the same time, the power supply circuit 1 is protected from overvoltage by the power fuse 13, and the power supply circuit 1 is prevented from being reversely connected to the power supply by the diode 14. The power indicator light 15 displays the on and off status of the power supply circuit 1.

[0025] In this embodiment, the angle detection conversion circuit 2 includes an angle potentiometer 21 , which is disposed on the damper or window.

[0026] Based on the above embodiment, the opening angle of the damper or window is detected by the angle detection conversion circuit 2, and the angle of rotation of the damper or window is converted into a voltage signal by the angle potentiometer 21; the angle detection conversion circuit 2 collects a plurality of angle data within the same time period, that is, within the same time period, the angle locator 21 converts a plurality of voltage signals.

[0027] In this embodiment, the 485 communication circuit 3 includes a communication module 31 , a driving module 32 and a receiving module 33 . The driving module 32 and the receiving module 33 are both connected to the communication module 31 , and the receiving module 33 is connected to the angle potentiometer 21 .

[0028] Based on the above embodiment, the receiving module 33 in the 485 communication circuit 3 receives multiple voltage signals sent by the angle potentiometer 21 and sends several voltage signals to the communication module 31; at the same time, the 485 communication circuit 3 is connected to the control host or PLC controller.

[0029] In this embodiment, the single-chip microcomputer control circuit 4 includes a control module 41 and an operation module 42. The control module 41 is provided with an analog-to-digital conversion circuit, and the analog-to-digital conversion circuit is connected to the communication module 31 in the 485 communication circuit 3. The control module 41 transmits the digital signal to the operation module 42. The operation module 42 processes the received data and transmits the processed data to the control module 41 in the form of a digital signal.

[0030] Specifically, the computing module 42 processes the data through its internal chip, the chip model of which is STM32F030F4P6TR.

[0031] The single chip control circuit 4 further includes a storage module 43 . The storage module 43 receives the digital signal from the control module 41 and sends the digital signal to the control module 41 .

[0032] Based on the above embodiment, the control module 41 of the single-chip control circuit 4 receives a number of voltage signals sent by the communication module 31, and converts the number of voltage signals into a number of digital signals through the analog-to-digital conversion circuit, and stores the number of digital signals in the storage module 43. The number of digital signals stored in the storage module 43 can be sent to the communication module 31 through the control module 41, and then sent to the control host or PLC controller by the 485 communication circuit 3; at the same time, in order to ensure the accuracy of the data, the control module 41 will read multiple data and send them to the operation module 42. The operation module 42 processes the received data to obtain more accurate data, and sends the data to the control module 41 in the form of digital signals.

[0033] In this embodiment, the LED driving circuit 5 includes an LED driving module 51 and a display module 52 . The LED driving module 51 is connected to the driving module 32 in the 485 communication circuit 3 .

[0034] Based on the above embodiment, the digital signal processed by the operation module 42 is sent to the communication module 31 of the 485 communication circuit 3 through the control module 41. The communication module 31 sends the digital signal to the drive module 32. The drive module 32 sends the digital signal to the LED drive module 51. After receiving the digital signal, the LED drive module 51 drives the display module 52 to make the display module 52 display the numerical value of the opening and closing angle of the damper or window.

[0035] The working principle of the present invention is as follows: the power supply circuit 1 provides power to the angle detection conversion circuit 2, the 485 communication circuit 3, the single-chip control circuit 4 and the LED drive circuit 5; the angle detection circuit 2 provided on the damper or window detects the opening angle of the damper or window, and the angle of rotation of the damper or window is converted into a plurality of voltage signals through the angle potentiometer 21; the angle potentiometer 21 sends the plurality of voltage signals to the receiving module 33 in the 485 communication circuit 3; the receiving module 33 sends the plurality of voltage signals to the control module 41 in the single-chip control circuit 4 through the communication module 31; the analog-to-digital conversion circuit in the control module 41 converts the plurality of voltage signals into a plurality of voltage signals; the analog-to-digital conversion circuit 2 ... The received voltage signals are converted into digital signals, and the control module 41 sends the digital signals to the storage module 43 for storage. At the same time, the control module 41 sends the digital signals to the calculation module 42, and the calculation module 42 processes the data. The processed data is sent to the 485 communication circuit 3 through the control module 41, and the digital signals are sent to the drive module 32 through the communication module 31. The drive module 32 sends the received digital signals to the LED drive module 51. After receiving the digital signals, the LED drive module 51 drives the display module 52, so that the display module 52 displays the value of the opening and closing angle of the damper or window;

[0036] When the control host or PLC controller needs to observe the opening angle of the damper or window, the digital signal stored in it is sent to the control module 41 through the storage module 43, and the control module 41 sends the digital signal to the control host or PLC controller through the 485 communication circuit 3.

[0037] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. The intrinsically safe angle sensor circuit for mining is characterized by: include: The power supply circuit includes a first voltage stabilizing module and a second voltage stabilizing module connected in series. The first voltage stabilizing module converts a 12V input voltage into a 5V output voltage. The second voltage stabilizing module converts the 5V output voltage of the first voltage stabilizing module into a 3.3V output voltage. The converted 3.3V output voltage is used to power the entire sensor circuit. An angle detection conversion circuit, including an angle potentiometer, wherein the angle potentiometer is provided on the damper or window; 485 communication circuit, including a communication module, a driving module and a receiving module, wherein the driving module and the receiving module are both connected to the communication module, and the receiving module is connected to the angle potentiometer; The single-chip microcomputer control circuit includes a control module and an operation module. The control module is provided with an analog-to-digital conversion circuit, and the analog-to-digital conversion circuit is connected to the communication module in the 485 communication circuit. The control module transmits the digital signal to the operation module, and the operation module processes the received data and transmits the processed data to the control module in the form of a digital signal; The LED driving circuit includes an LED driving module and a display module. The LED driving module is connected to the driving module in the 485 communication circuit.

2. The intrinsically safe angle sensor circuit for mining according to claim 1, characterized in that: The computing module processes the data through its internal chip, which is STM32F030F4P6TR.

3. The mine intrinsically safe angle sensor circuit according to claim 2, characterized in that: A power fuse and a diode for protecting the power supply circuit are provided between the first voltage stabilizing module and the power supply.

4. The mine intrinsically safe angle sensor circuit according to claim 3, characterized in that: The power supply circuit is connected with a power indicator light.

5. The mine intrinsically safe angle sensor circuit according to claim 4, characterized in that: The single chip control circuit further includes a storage module, which receives the digital signal of the control module and sends the stored digital signal to the control module.

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