Wireless control device applied to mining explosion-proof frequency converter equipment

Abstract

The utility model relates to the technical field of mining explosion-proof frequency converters, and discloses a wireless control device applied to mining explosion-proof frequency converter equipment, which comprises a power supply module, a battery module, a boosting module, a control module, a wireless communication module and a display screen driving module, the power supply module is respectively connected with the boosting module, the control module, the wireless communication module and the display screen driving module; the battery module is connected with the control module; the boost module is connected with the control module and the display screen driving module. The control module is connected with the wireless communication module and the display screen driving module. According to the utility model, data exchange can be carried out through wireless data communication with the interior of the frequency converter equipment via the explosion-proof housing, so that the operation state can be monitored in real time more conveniently, and the manual maintenance and debugging cost is greatly saved.

Description

Technical Field

[0001] This utility model relates to the technical field of explosion-proof frequency converters for mining, and specifically to a wireless control device for explosion-proof frequency converter equipment used in mining. Background Technology

[0002] Due to explosion-proof and intrinsically safe requirements, most frequency converters are housed in stainless steel casings with explosion-proof properties. Furthermore, because coal mines are filled with coal dust, many devices require airtight protection, necessitating specific sealing and thickness specifications for the casing. This results in extremely heavy and thick casings for frequency converters. When debugging, downloading programs, or downloading parameters, the casing must be opened for wired connections. However, opening and closing the casing is difficult, time-consuming, and increases the risk of injury. Regular maintenance and inspection are also challenging, increasing the risk of accidents. Wired connections are susceptible to damage from high-voltage, high-current, and high-energy wired transmissions during operation. The presence of cable outlets in wired transmissions can also compromise the controller's sealing, leading to corrosion or damage from moisture in humid or salt-spray environments over time. The explosion-proof enclosure of the frequency converter is made of stainless steel and other metal materials and is extremely thick. Ordinary wireless signal devices will be blocked and reflected by the metal enclosure, which will affect data transmission. Therefore, it is necessary to design a wireless control device that can penetrate the metal enclosure to modify the internal parameters of the device and monitor its status in real time. Utility Model Content

[0003] To address the aforementioned shortcomings in the existing technology, this utility model provides a wireless control device for use in explosion-proof frequency converters in mining applications.

[0004] To achieve the aforementioned objectives, the technical solution adopted by this utility model is as follows:

[0005] A wireless control device for explosion-proof frequency converters used in mining includes a power supply module, a battery module, a boost module, a control module, a wireless communication module, and a display screen driver module. The power supply module is connected to the boost module, the control module, the wireless communication module, and the display screen driver module. The battery module is connected to the control module. The boost module is connected to both the control module and the display screen driver module. The control module is connected to both the wireless communication module and the display screen driver module.

[0006] Preferably, the power module includes a connector, a 5V voltage conversion chip, and a 3.3V voltage conversion chip; the power supply terminal of the connector is connected to an external power supply and to the power supply voltage terminal of the 5V voltage conversion chip; the 5V voltage output terminal of the 5V voltage conversion chip is connected to the power supply voltage terminal of the 3.3V voltage conversion chip and the power supply voltage terminal of the boost module; the 3.3V voltage output terminal of the 3.3V voltage conversion chip is connected to the power supply voltage terminals of the battery module, the control module, the wireless communication module, and the display driver module.

[0007] Preferably, the battery module includes a battery, a first diode, and a second diode; the battery voltage terminal of the battery is connected to the positive terminal of the second diode; the positive terminal of the first diode is connected to the 3.3V voltage output terminal of the 3.3V voltage conversion chip; the negative terminals of the first diode and the second diode are connected together and connected to the clock voltage terminal of the control module.

[0008] Preferably, the boost module includes a 15V boost chip; the power supply voltage terminal of the 15V boost chip is connected to the 5V voltage output terminal of the 5V voltage conversion chip, the enable terminal of the 15V boost chip is connected to the enable terminal of the control module, and the 15V voltage output terminal of the 15V boost chip is connected to the power supply voltage terminal of the display driving module.

[0009] Preferably, the wireless communication module includes a wireless communication chip, an electromagnetic filter circuit, and an antenna; the data transmission pin of the wireless communication chip is connected to the data transmission pin of the control module; the radio frequency communication pin of the wireless communication chip is connected to the antenna through the electromagnetic filter circuit; and the 3.3V power supply voltage terminal of the wireless communication chip is connected to the 3.3V voltage output terminal of the 3.3V voltage conversion chip.

[0010] Preferably, the display driving module includes a display driving chip; the data transmission pins, communication pins, and control pins of the display driving chip are connected to the data transmission pins, communication pins, and control pins of the control module.

[0011] Preferably, a 485 signal driving module is also included;

[0012] The 485 signal driving module includes a 485 transceiver chip and a 485 signal filter chip; the signal input pin of the 485 signal filter chip is connected to the signal terminal of the connector; the signal transceiver pin of the 485 signal filter chip is connected to the signal transceiver pin of the 485 transceiver chip; the power supply voltage terminal of the 485 transceiver chip is connected to the 5V voltage output terminal of the 5V voltage conversion chip; and the data transmission pin of the 485 transceiver chip is connected to the data transmission pin of the control module.

[0013] Preferably, it also includes a TF storage driver module;

[0014] The TF storage driver module includes a TF protection chip and a TF control chip; the power supply voltage terminal of the TF protection chip is connected to the 3.3V voltage output terminal of the 3.3V voltage conversion chip; the conversion power supply terminal of the TF protection chip is connected to the conversion power supply terminal of the TF protection chip; the reset pin of the TF protection chip is connected to the reset pin of the control module; the data transmission pin of the TF protection chip is connected to the data transmission pin of the TF control chip and the data transmission pin of the control module, respectively.

[0015] Preferably, it also includes an FRAM storage driver module;

[0016] The FRAM storage driver module includes an FRAM storage chip; the data transmission pins and control pins of the FRAM storage chip are connected to the data transmission pins and control pins of the control module.

[0017] Preferably, a USB driver module is also included;

[0018] The USB driver module includes a USB driver chip; the data transmission pins of the USB driver chip are connected to the data transmission pins of the control module.

[0019] This utility model has the following beneficial effects:

[0020] This utility model communicates wirelessly with the inside of the frequency converter equipment, enabling data exchange, wireless control, wireless parameter download, and real-time wireless status monitoring through the explosion-proof housing. The addition of an RTC battery allows each data entry to be timestamped, facilitating real-time monitoring of the operating status and significantly reducing manual maintenance and debugging costs. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of a wireless control device used in explosion-proof frequency converter equipment for mining.

[0022] Figure 2 This is a schematic diagram of the power module structure;

[0023] Figure 3 This is a schematic diagram of the battery module structure;

[0024] Figure 4 This is a schematic diagram of the boost module structure;

[0025] Figure 5 This is a schematic diagram of the wireless communication module structure;

[0026] Figure 6This is a schematic diagram of the display driver module structure;

[0027] Figure 7 This is a schematic diagram of the control module structure;

[0028] Figure 8 This is a schematic diagram of the 485 signal driver module.

[0029] Figure 9 This is a schematic diagram of the TF storage driver module structure;

[0030] Figure 10 This is a schematic diagram of the FRAM storage driver module structure;

[0031] Figure 11 This is a schematic diagram of the USB driver module structure;

[0032] Figure 12 This is a schematic diagram of the button driver module. Detailed Implementation

[0033] The specific embodiments of this utility model are described below to enable those skilled in the art to understand this utility model. However, it should be understood that this utility model is not limited to the scope of the specific embodiments. For those skilled in the art, as long as various changes are within the spirit and scope of this utility model as defined and determined by the appended claims, these changes are obvious. All utility model creations utilizing the concept of this utility model are within the scope of protection.

[0034] like Figure 1 As shown in the figure, this utility model provides a wireless control device for mining explosion-proof frequency converter equipment, including a power supply module, a battery module, a boost module, a control module, a wireless communication module, and a display screen driver module; the power supply module is connected to the boost module, the control module, the wireless communication module, and the display screen driver module respectively; the battery module is connected to the control module; the boost module is connected to the control module and the display screen driver module respectively; and the control module is connected to the wireless communication module and the display screen driver module respectively.

[0035] In this embodiment, the power module includes a connector, a 5V voltage conversion chip, and a 3.3V voltage conversion chip. The 5V voltage conversion chip is an MP9943GQ-P, and the 3.3V voltage conversion chip is an AMS1117-3.3. The power supply terminal of the connector is connected to an external power supply and also to the power supply voltage terminal of the 5V voltage conversion chip. The 5V output terminal of the 5V voltage conversion chip is connected to the power supply voltage terminal of the 3.3V voltage conversion chip and the power supply voltage terminal of the boost module. The 3.3V output terminal of the 3.3V voltage conversion chip is connected to the power supply voltage terminals of the battery module, the control module, the wireless communication module, and the display driver module.

[0036] like Figure 2 As shown, the VCCIN and GND pins of connector P4 of the power module are connected to an external power supply and to a 5V voltage conversion chip U1 for power conversion. The output VCC5V supplies power to the 485 signal driver module, boost module, and USB driver module. The VCC5V pins are connected to a 3.3V voltage conversion chip U4 for power conversion. The output VCC3V3 supplies power to the battery module, TF memory driver module, FRAM memory driver module, display driver module, control module, button driver module, and wireless communication module.

[0037] In this embodiment, the battery module includes a battery, a first diode, and a second diode; the battery voltage terminal of the battery is connected to the positive terminal of the second diode; the positive terminal of the first diode is connected to the 3.3V voltage output terminal of the 3.3V voltage conversion chip; the negative terminals of the first diode and the second diode are connected together and connected to the clock voltage terminal of the control module.

[0038] like Figure 3 As shown, the battery module's battery B1 output VCC_RTC is connected to the VCCRTC pin of the control module through the second diode D12. It provides real-time when the device is out of power, and VCC3V3 provides real-time to the control module through the first diode D11 when the device is powered.

[0039] In this embodiment, the boost module includes a 15V boost chip, which is an MWSA0503S-100MT. The power supply voltage terminal of the 15V boost chip is connected to the 5V voltage output terminal of the 5V voltage conversion chip. The enable terminal of the 15V boost chip is connected to the enable terminal of the control module. The 15V voltage output terminal of the 15V boost chip is connected to the power supply voltage terminal of the display driver module.

[0040] like Figure 4As shown, the 15V boost chip U6 converts VCC5V to VCC15V to supply power to the display driver module. The EN pin of the 15V boost chip U6 is connected to the ENABLE pin of the control module, which is used to control the conversion enable by the control module.

[0041] In this embodiment, the wireless communication module includes a wireless communication chip, an electromagnetic filter circuit, and an antenna. The wireless communication chip is an AP6256. The data transmission pin of the wireless communication chip is connected to the data transmission pin of the control module. The radio frequency communication pin of the wireless communication chip is connected to the antenna through the electromagnetic filter circuit. The 3.3V power supply voltage terminal of the wireless communication chip is connected to the 3.3V voltage output terminal of the 3.3V voltage conversion chip.

[0042] like Figure 5 As shown, the wireless communication module is powered by VCC3V3. The antenna is used to amplify the transmitted and received signals, and the electromagnetic filter circuit is used to filter the received signal to prevent external interference and to prevent itself from interfering with external devices. The antenna is connected to the WL_BT_ANT pin of the wireless communication chip U2 through the electromagnetic filter circuit. The SDIO_DATA2, SDIO_DATA3, SDIO_CMD, SDIO_CLK, SDIO_DATA0, and SDIO_DATA1 pins of the wireless communication chip U2 are connected to the MMC_DATA2, MMC_DATA3, MMC_CMD, MMC_CLK, MMC_DATA0, and MMC_DATA1 pins of the control module for data communication. The UART_RXD_IN and UART_TXD_OUT pins of the wireless communication chip U2 are connected to the USART1_RX and USART1_TX pins of the control module for data communication.

[0043] In this embodiment, the display driver module includes a display driver chip, which is an HG-5628ASWCG01; the data transmission pins, communication pins, and control pins of the display driver chip are connected to the data transmission pins, communication pins, and control pins of the control module.

[0044] like Figure 6 As shown, the power supply for the display driver chip JP1 is jointly provided by VCC15V and VCC3V3. The pins of the display driver chip JP1, such as D0, D1, D2, D3, D4, D5, D6, D7, BS1, BS2, E / RD, R / W, DC, CS, and RES, are connected to the corresponding pins of the control module to realize data communication and control of the display content.

[0045] like Figure 7As shown, the control module includes a control chip U7, which is an STM32F407VGT6. The VBAT, VDDA, VDD1, VDD2, and VDD3 pins of the control chip U7 are connected to the VCC3V3 power supply of the 3.3V voltage conversion chip U4 to power the control chip U7. These power supplies are also connected to GND through capacitors C1, C2, C3, C4, C5, C6, C7, and C8. The VSSA, VSS1, VSS2, and VSS3 pins of the control chip U7 are connected to GND. The LED_R, LED_G, and LED_B pins of the control chip U7 are connected to three indicator lights D15, D16, and D17 respectively to control the on / off state of the three lights. The connections of the remaining pins have been explained in the relevant circuit descriptions above and will not be repeated here.

[0046] In this embodiment, the device further includes a 485 signal driving module; the 485 signal driving module includes a 485 transceiver chip and a 485 signal filter chip, the 485 transceiver chip is a MAX13487EESA+T, and the 485 signal filter chip is an ACM2520; the signal input pin of the 485 signal filter chip is connected to the signal terminal of the connector; the signal transceiver pin of the 485 signal filter chip is connected to the signal transceiver pin of the 485 transceiver chip; the power supply voltage terminal of the 485 transceiver chip is connected to the 5V voltage output terminal of the 5V voltage conversion chip; the data transmission pin of the 485 transceiver chip is connected to the data transmission pin of the control module.

[0047] like Figure 8 As shown, the 485 transceiver chip U3 is powered by VCC5V. The 485 signal filter chip L2 is connected to the 485A and 485B pins of connector P4 to connect to external communication signals for data reading, transmission, and protection filtering. The RS485A and RS485B pins of the 485 signal filter chip L2 are then connected to the RS485A and RS485B pins of the 485 transceiver chip U3 for level conversion, enabling and controlling the transmit and receive signals, and realizing data transmission and reception. Finally, the 485 transceiver chip U3 is connected to the 485RX, 485RE, SHDN, and 485TX pins of the control module to exchange data with the control module.

[0048] In this embodiment, the device further includes a TF storage driver module; the TF storage driver module includes a TF protection chip and a TF control chip, the TF protection chip is a PUSB3AB6Z, and the TF control chip is a TF-002X-H18; the power supply voltage terminal of the TF protection chip is connected to the 3.3V voltage output terminal of the 3.3V voltage conversion chip; the conversion power supply terminal of the TF protection chip is connected to the conversion power supply terminal of the TF protection chip; the reset pin of the TF protection chip is connected to the reset pin of the control module; the data transmission pin of the TF protection chip is connected to the data transmission pin of the TF control chip and the data transmission pin of the control module, respectively.

[0049] like Figure 9 As shown, the TF protection chip DT1 is powered by VCC3V3, and the power supply is converted to VSD3V3 and connected to the TF control chip P5 to power it. The TF control chip P5 is connected to an external TF card to read and store data. The MMC1_DATA2, MMC1_DATA3, MMC1_CMD, MMC1_CLK, MMC1_DATA0, and MMC1_DATA1 pins of the TF control chip P5 are used to protect the port through the MMC1_DATA2, MMC1_DATA3, MMC1_CMD, MMC1_CLK, MMC1_DATA0, and MMC1_DATA1 pins of the TF protection chip DT1. Finally, the above pins of the TF protection chip DT1 and the RESETSTATZ pin are connected to the control module for data reading and reset operations.

[0050] In this embodiment, the device further includes an FRAM storage driver module; the FRAM storage driver module includes an FRAM storage chip, which is an MB85RS2MTAPNF; the data transmission pins and control pins of the FRAM storage chip are connected to the data transmission pins and control pins of the control module.

[0051] like Figure 10 As shown, the FRAM memory chip U5 is powered by VCC3V3. The FRAMCS, FRAMSO, FRAMWP, FRAMHOLD, FRAMSCK, and FRAMSI pins of the FRAM memory chip U5 are connected to the above pins of the control module for power-down data storage and bootloader reading and writing.

[0052] In this embodiment, the device further includes a USB driver module; the USB driver module includes a USB driver chip, which adopts a TYPE-C 16PLC-H10.0; the data transmission pin of the USB driver chip is connected to the data transmission pin of the control module.

[0053] like Figure 11 As shown, the USB driver chip P6 is powered by VBUS and GND. The D+ and D- pins of the USB driver chip P6 are connected to the USBD+ and USBD- of the control module through DT4 and L5 for USB data communication. VBUS is converted from VDD5V through the protection and filtering of the F4 fuse, the TVS of DT3, and capacitors C38 and C39. Q1, R32, Q3, R34, Q5, R36, and R37 constitute the USB input / output power protection circuit. If the external VCCIN is powered, the connection between VCC5V and VDD5V is disconnected to protect the USB interface from reverse current. If the external VCCIN is not powered, VDD5V and VCC5V are turned on, so that the USB port can be used as an external power supply interface to power the board.

[0054] like Figure 12 As shown, the device in this embodiment also includes a button driving module, which consists of buttons 1 to 11. Each button has a pull-up resistor and a grounding capacitor for debouncing filtering. KEY1-KEY11 are respectively connected to the KEY1-KEY11 pins of the processor.

[0055] This invention employs wireless communication for data communication with the internal components of the frequency converter, enabling data exchange, wireless control, wireless parameter download, and real-time status monitoring even through the explosion-proof housing. The addition of an RTC battery allows each data entry to be timestamped, facilitating real-time monitoring of the operating status and enabling data storage and transmission to a computer for analysis, significantly reducing manual maintenance and debugging costs. Communication with the internal main control board is achieved without opening the frequency converter's explosion-proof housing, preventing safety hazards caused by opening the housing for debugging and preventing moisture intrusion due to frequent opening. It also solves the problem of being unable to perform real-time monitoring and data analysis during frequency converter operation due to the inability to open the housing. The absence of any wired connections saves on wiring costs and prevents high-voltage, high-current interference from being transmitted through wires.

[0056] This utility model uses specific embodiments to illustrate the principle and implementation of the utility model. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​the utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the idea of ​​the utility model. Therefore, the content of this specification should not be construed as a limitation of the utility model.

[0057] Those skilled in the art will recognize that the embodiments described herein are intended to help the reader understand the principles of this invention, and should be understood that the scope of protection of this invention is not limited to such specific statements and embodiments. Those skilled in the art can make various other specific modifications and combinations based on these technical teachings disclosed in this invention without departing from the essence of this invention, and these modifications and combinations are still within the scope of protection of this invention.

Claims

1. A wireless control device for use in explosion-proof frequency converters in mining applications, characterized in that, It includes a power supply module, a battery module, a boost module, a control module, a wireless communication module, and a display driver module; the power supply module is connected to the boost module, the control module, the wireless communication module, and the display driver module respectively; the battery module is connected to the control module; the boost module is connected to the control module and the display driver module respectively; the control module is connected to the wireless communication module and the display driver module respectively.

2. The wireless control device for use in mine explosion-proof frequency converters according to claim 1, characterized in that, The power module includes a connector, a 5V voltage conversion chip, and a 3.3V voltage conversion chip. The power supply terminal of the connector is connected to an external power supply and also to the power supply voltage terminal of the 5V voltage conversion chip. The 5V output terminal of the 5V voltage conversion chip is connected to the power supply voltage terminal of the 3.3V voltage conversion chip and the power supply voltage terminal of the boost module. The 3.3V output terminal of the 3.3V voltage conversion chip is connected to the power supply voltage terminals of the battery module, the control module, the wireless communication module, and the display driver module.

3. The wireless control device for use in mine explosion-proof frequency converters according to claim 2, characterized in that, The battery module includes a battery, a first diode, and a second diode; the battery voltage terminal of the battery is connected to the positive terminal of the second diode; the positive terminal of the first diode is connected to the 3.3V voltage output terminal of the 3.3V voltage conversion chip; the negative terminals of the first diode and the second diode are connected together and connected to the clock voltage terminal of the control module.

4. The wireless control device for use in mine explosion-proof frequency converters according to claim 3, characterized in that, The boost module includes a 15V boost chip; the power supply voltage terminal of the 15V boost chip is connected to the 5V voltage output terminal of the 5V voltage conversion chip, the enable terminal of the 15V boost chip is connected to the enable terminal of the control module, and the 15V voltage output terminal of the 15V boost chip is connected to the power supply voltage terminal of the display driving module.

5. A wireless control device for use in mine explosion-proof frequency converters according to claim 4, characterized in that, The wireless communication module includes a wireless communication chip, an electromagnetic filter circuit, and an antenna; the data transmission pin of the wireless communication chip is connected to the data transmission pin of the control module; the radio frequency communication pin of the wireless communication chip is connected to the antenna through the electromagnetic filter circuit; the 3.3V power supply voltage terminal of the wireless communication chip is connected to the 3.3V voltage output terminal of the 3.3V voltage conversion chip.

6. A wireless control device for use in mine explosion-proof frequency converters according to claim 5, characterized in that, The display driver module includes a display driver chip; the data transmission pins, communication pins, and control pins of the display driver chip are connected to the data transmission pins, communication pins, and control pins of the control module.

7. A wireless control device for use in mine explosion-proof frequency converters according to claim 6, characterized in that, It also includes a 485 signal driver module; The 485 signal driving module includes a 485 transceiver chip and a 485 signal filter chip; the signal input pin of the 485 signal filter chip is connected to the signal terminal of the connector; the signal transceiver pin of the 485 signal filter chip is connected to the signal transceiver pin of the 485 transceiver chip; the power supply voltage terminal of the 485 transceiver chip is connected to the 5V voltage output terminal of the 5V voltage conversion chip; and the data transmission pin of the 485 transceiver chip is connected to the data transmission pin of the control module.

8. A wireless control device for use in mine explosion-proof frequency converters according to claim 7, characterized in that, It also includes the TF storage driver module; The TF storage driver module includes a TF protection chip and a TF control chip; the power supply voltage terminal of the TF protection chip is connected to the 3.3V voltage output terminal of the 3.3V voltage conversion chip; the conversion power supply terminal of the TF protection chip is connected to the conversion power supply terminal of the TF protection chip; the reset pin of the TF protection chip is connected to the reset pin of the control module; the data transmission pin of the TF protection chip is connected to the data transmission pin of the TF control chip and the data transmission pin of the control module, respectively.

9. A wireless control device for use in mine explosion-proof frequency converters according to claim 8, characterized in that, It also includes an FRAM storage driver module; The FRAM storage driver module includes an FRAM storage chip; the data transmission pins and control pins of the FRAM storage chip are connected to the data transmission pins and control pins of the control module.

10. A wireless control device for use in mine explosion-proof frequency converters according to claim 1, characterized in that, It also includes a USB driver module; The USB driver module includes a USB driver chip; the data transmission pins of the USB driver chip are connected to the data transmission pins of the control module.

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