CN207946664U - Memory Cards and Industrial Equipment - Google Patents

Abstract

The utility model provides a memory card, comprising: a micro control unit; a wireless communication module for establishing a wireless communication link with an external device in a wireless manner, and a plurality of pins connected to the micro control unit, the plurality of pins being at least It includes a power supply pin group, a first pin group supporting the first communication protocol, and a second pin group supporting the second communication protocol, wherein the power supply pin group is connected to the wireless communication module to communicate with the wireless communication module via the power supply pin group powered by. In addition, the utility model also provides industrial equipment suitable for using the above memory card.

Description

Memory Cards and Industrial Equipment

technical field

The utility model relates to the field of industrial control, in particular to a memory card with a wireless communication function and corresponding industrial equipment.

Background technique

At present, most of the debugging, control and parameter configuration of traditional industrial equipment use built-in or external panels. For the scheme of built-in or external panel, the panel and connecting wire are necessary, and the interface must also be reserved. Therefore, the cost of this solution is relatively high, and in some applications, the length and connection of the data lines are limited.

In addition, existing wireless solutions still require specific interfaces or occupy other interfaces to realize the connection between external communication modules and industrial equipment. This solution is also costly and has poorer cosmetic properties.

SD cards with wireless functions have appeared on the market currently. However, the current SD card generally only can realize data transmission between the mobile device and the SD card, and does not have functions such as device control.

Utility model content

Aiming at the above-mentioned shortcomings of the prior art, the utility model proposes a memory card and corresponding industrial equipment. The storage card and the industrial equipment of the utility model can use two kinds of communication protocols at the same time, so as to provide the industrial equipment with the traditional card slot with the possibility of realizing wireless communication and data storage at the same time. The technical scheme of the utility model does not need to modify the traditional card slot (such as MMC card slot), and does not need additional control panels and connecting wires. It only needs to use a mobile device with wireless communication function and operating software installed to realize the device. Various functions of debugging, parameter configuration and program update.

According to one aspect of the present invention, a memory card is provided, including:

micro control unit;

a wireless communication module for establishing a wireless communication link with an external device in a wireless manner, and

a plurality of pins connected to the microcontroller unit, the plurality of pins at least including a power supply pin group, a first pin group supporting the first communication protocol, and a second pin group supporting the second communication protocol,

Wherein, the power supply pin group is connected to the wireless communication module to supply power to the wireless communication module via the power supply pin group.

According to one embodiment, in the above memory card, the first communication protocol is a serial peripheral interface (SPI) protocol, and the first pin group includes SPI_CS pins, SPI_MISO pins, SPI_MOSI pins and SPI_CLK pin.

According to one embodiment, in the above memory card, the second communication protocol is a Universal Asynchronous Receiver Transmitter (UART) protocol, and the second pin group includes RX pins and TX pins. The UART protocol uses the redundant pins of the memory card to realize communication and control of industrial equipment through the UART protocol.

According to an embodiment, in the above memory card, the second communication protocol is an I2C protocol, and the second pin group includes SDL pins and SDA pins. The I2C protocol uses the redundant pins of the memory card to realize communication and control of industrial equipment through the I2C protocol.

According to one embodiment, in the above-mentioned memory card, an identification circuit is further included, and the identification circuit includes a first resistor and a second resistor connected in series between the power supply and the ground, wherein between the first resistor and the second resistor The node outputs an intelligent identification level. The intelligent identification level is used to judge whether the inserted ordinary memory card or the memory card of the present utility model is inserted.

According to another aspect of the present utility model, an industrial device is provided, including a processing unit and a card slot, the processing unit is connected to the card slot, and the card slot is suitable for inserting the memory card as discussed above, the The processing unit supports the first communication protocol and the second communication protocol, so as to allow the processing unit to communicate with the micro control unit of the memory card by using the first communication protocol and the second communication protocol.

According to yet another aspect of the present utility model, an industrial device is provided, including a processing unit and a card slot, the processing unit is connected to the card slot, and the card slot is suitable for inserting the memory card as discussed above, the The processing unit supports the first communication protocol and the second communication protocol,

Wherein, the industrial equipment further includes a switch module, and the switch module is connected to a node between the first resistor and the second resistor,

Wherein, the switch module turns on or off the connection between the second pin group and the processing unit according to the intelligent identification level.

According to another aspect of the present utility model, an industrial device is provided, including a processing unit and a card slot, the processing unit is connected to the card slot, and the card slot is suitable for inserting the memory card as discussed above, the The processing unit supports the first communication protocol and the second communication protocol,

Wherein, the first communication protocol is a serial peripheral interface (SPI) protocol, and the first pin group includes SPI_CS pins, SPI_MISO pins, SPI_MOSI pins and SPI_CLK pins,

Wherein, the industrial equipment further includes a switch module connected to the processing unit,

Wherein, the SPI_CS pin in the first pin group is connected to a node between the first resistor and the second resistor,

Wherein, the processing unit reads the intelligent identification level through the SPI_CS pin, and the processing unit controls the switch module to turn on or off the second pin group according to the intelligent identification level connection to the processing unit.

It is to be understood that both the foregoing general description and the following detailed description of the invention are exemplary and explanatory and are intended to provide further explanation of the invention as claimed.

Description of drawings

The drawings are included to provide a further understanding of the utility model, they are included and constitute a part of the application, the drawings show the embodiments of the utility model, and play a role in explaining the principle of the utility model together with the specification. In the attached picture:

FIG. 1 is a schematic diagram of a memory card according to an embodiment of the present invention.

Fig. 2 shows a frame diagram of an embodiment of an application environment of a memory card and an industrial device according to the present invention.

Fig. 3 shows a schematic diagram of an implementation of an intelligent identification circuit according to an embodiment of the present invention.

Fig. 4 shows a schematic diagram of an implementation of an intelligent identification circuit according to another embodiment of the present invention.

Explanation of reference signs:

10 memory cards

11 Micro control unit

12 wireless communication module

13 pins

14 Identification circuit

15 First resistor

16 Second resistor

20 industrial equipment

21 Power pin group

22 First pin group

23 Second pin group

24 External devices

25 processing units

26 switch modules

Detailed ways

Embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Reference will now be made in detail to the preferred embodiments of the invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same numbers will be used throughout the drawings to refer to the same or like parts. In addition, although the terms used in this utility model are selected from known and commonly used terms, some terms mentioned in the specification of this utility model may be selected by the applicant according to his or her judgment, and their detailed meanings Indicated in the relevant part of the description of this article. Furthermore, it is required that the present invention be understood not only by the actual terms used, but also by the meaning implied by each term.

The basic principles and preferred embodiments of the present invention are discussed in more detail with reference to FIGS. 1 to 4 .

First, as shown in FIG. 1 , the memory card 10 of the present invention mainly includes a micro control unit 11 , a wireless communication module 12 and a plurality of pins 13 . The wireless communication module 12 is used to set up a wireless communication link with an external device (such as the external device 24 in FIG. 2 ) in a wireless manner (such as wifi). Terminal equipment such as computers. A plurality of pins 13 are connected to the microcontroller unit 11 . As further discussed in conjunction with FIG. 2 , the plurality of pins 13 at least includes a power supply pin group 21 , a first pin group 22 supporting a first communication protocol, and a second pin group 23 supporting a second communication protocol. The aforementioned power pin set 21 is connected to the wireless communication module 12 to supply power to the wireless communication module 12 via the power pin set 21 . Therefore, the memory card 10 of the present invention can communicate with the MCU 25 of the industrial device 20 simultaneously using two communication protocols (for example, one of the UART protocol and the I2C protocol and the traditional SPI protocol). Among them, the SPI protocol is used for reading and writing data of conventional memory cards. The UART protocol or I2C protocol uses the redundant pins of the memory card to realize communication and control of industrial equipment through the UART protocol or I2C protocol.

Therefore, the memory card 10 of the present invention can be used to implement debugging, parameter configuration and program update of industrial equipment. That is, an external device (such as a mobile device) implements richer operations such as parameter read and write, program update, and real-time monitoring on the parameters of the industrial device 20 through wireless (wifi or bluetooth). Therefore, the utility model can overcome the single function problem of the memory card with wifi function in the prior art that can only realize the wireless data reading and writing between the external device and the data on the memory card.

In the above-mentioned scheme, the power ports connected to the power supply pin group 21 are shared, and the memory card 10 of the present utility model shares or utilizes redundant pins (it has nothing to do with the communication interface of the traditional memory card, and has no effect on data storage. Influence) to form the channel of UART or I2C communication protocol.

Fig. 2 shows a frame diagram of an embodiment of an application environment of a memory card and an industrial device according to the present invention. As shown in FIG. 2 , the memory card 10 of the present invention can be inserted into the card slot of the industrial equipment 20 and connected with the MCU 25 of the industrial equipment 20 through a bus.

In the embodiment shown in FIG. 2 , the power supply pin group 21 may include two lines, namely VCC (power supply) and GND (ground). In addition, the first communication protocol is a serial peripheral interface (SPI) protocol, and the first pin group includes a SPI_CS pin, an SPI_MISO pin, an SPI_MOSI pin, and a SPI_CLK pin. The second communication protocol can be a Universal Asynchronous Receiver Transmitter (UART) protocol, wherein the second pin group includes RX pins and TX pins; or the second communication protocol can also be an I2C protocol, wherein the second pin group includes SDL pin and the SDA pin. That is, the memory card 10 of the present invention can communicate with the MCU 25 of the industrial device 20 simultaneously using two communication protocols (for example, one of the UART protocol and the I2C protocol and the traditional SPI protocol).

In addition, the present invention can further set an identification circuit in the memory card 10 . For example, Fig. 3 and Fig. 4 respectively show two embodiments of the implementation of the intelligent identification circuit according to the present invention.

Referring first to FIG. 3 , the identification circuit 14 of the memory card 10 mainly includes a first resistor 15 and a second resistor 16 connected in series between the power supply VCC and the ground GND. The node N between the first resistor 15 and the second resistor 16 outputs an intelligent identification level Vin.

In the embodiment shown in FIG. 3 , the processing unit 25 (MCU) of the industrial device 20 is connected to a card slot (not shown) adapted to insert a memory card 10 as discussed above. The processing unit 25 supports the first communication protocol and the second communication protocol, so as to allow the processing unit 25 to communicate with the micro control unit 11 of the memory card 10 using the first communication protocol and the second communication protocol. In addition, the industrial equipment 20 also includes a switch module 26 connected to the node N between the first resistor 15 and the second resistor 16 . In particular, the switch module 26 can turn on or off the connection between the second pin group and the processing unit 25 according to the above-mentioned intelligent identification level Vin. According to this embodiment, the intelligent identification level Vin can be directly used as the control signal of the UART or I2C line/path to control the switch module 26 . Since the traditional memory card does not have the intelligent identification level Vin, it can be used to judge whether an ordinary memory card or the memory card 10 of the present invention is inserted. If it is an ordinary memory card, disconnect the communication channel corresponding to the second pin group; if it is the memory card 10 of the present invention, turn on the communication channel.

Furthermore, in the embodiment shown in FIG. 4 , the processing unit 25 (MCU) of the industrial device 20 is connected to a card slot (not shown) adapted to insert the memory card 10 as discussed above. The processing unit 25 supports the first communication protocol and the second communication protocol, so as to allow the processing unit 25 to communicate with the micro control unit 11 of the memory card 10 using the first communication protocol and the second communication protocol. In this embodiment, the first communication protocol is a Serial Peripheral Interface (SPI) protocol, wherein the first set of pins includes the SPI_CS pin, the SPI_MISO pin, the SPI_MOSI pin, and the SPI_CLK pin. In addition, the industrial device 20 further includes a switch module 26 , the switch module 26 is directly connected to the processing unit 25 , and the SPI_CS pin in the first pin group is connected to the node N between the first resistor 15 and the second resistor 16 . In particular, in this embodiment, the processing unit 25 reads the intelligent identification level Vin through the SPI_CS pin, and the processing unit 25 controls the switch module 26 to turn on or off the second pin group and process according to the intelligent identification level Vin. Connection between units 25. According to this embodiment, the processing unit 25 of the industrial device 20 reads the intelligent identification level Vin, and then the processing unit 25 sends a UART or I2C line/path control signal to control the switch module 26 . Similar to the embodiment shown in FIG. 3 , the intelligent identification level Vin is used to judge whether an ordinary memory card or the memory card 10 of the present invention is inserted. If it is an ordinary memory card, disconnect the communication channel corresponding to the second pin group; if it is the memory card 10 of the present invention, turn on the communication channel.

In summary, the technical solution of the utility model does not need to change the card slots on the existing industrial equipment, but reuses such card slots by improving the memory card, and realizes wireless communication functions and data reading and writing functions at the same time. Therefore, the utility model can carry out wireless real-time monitoring on industrial equipment and realize more functions. In addition, reusing existing memory card slots can increase their utilization and reduce retrofit costs. On the other hand, the utility model can also realize the function of intelligent identification, which can automatically distinguish the common memory card and the memory card of the utility model.

It will be apparent to those skilled in the art that various modifications and variations can be made to the above-described exemplary embodiments of the present invention without departing from the spirit and scope of the present invention. Therefore, it is intended that the present utility model cover the modifications and variations of the present utility model within the scope of the appended claims and their equivalent technical solutions.

Claims (8)

1. A memory card (10), characterized in that, comprising: micro control unit (11); A wireless communication module (12), used to wirelessly establish a wireless communication link with an external device, and A plurality of pins (13), connected to the micro control unit, the plurality of pins at least include a power supply pin group (21), a first pin group (22) supporting the first communication protocol, and a second pin group supporting the second the second pin group (23) for the communication protocol, Wherein, the power supply pin group is connected to the wireless communication module to supply power to the wireless communication module via the power supply pin group. 2. The memory card (10) of claim 1, wherein the first communication protocol is a Serial Peripheral Interface (SPI) protocol, and the first group of pins (22) includes the SPI_CS pin pin, SPI_MISO pin, SPI_MOSI pin, and SPI_CLK pin. 3. The memory card (10) as claimed in claim 2, wherein the second communication protocol is a Universal Asynchronous Receiver Transmitter (UART) protocol, and the second pin group (23) includes an RX pin pin and TX pin. 4. The memory card (10) according to claim 2, characterized in that, the second communication protocol is an I2C protocol, and the second pin group (23) includes an SDL pin and an SDA pin. 5. The memory card (10) as claimed in claim 1, further comprising an identification circuit (14), said identification circuit comprising a first resistor (15) and a second resistor connected in series between a power supply and ground (16), wherein the node (N) between the first resistor and the second resistor outputs an intelligent identification level. 6. An industrial device (20), characterized in that it comprises a processing unit (25) and a card slot, the processing unit is connected to the card slot, and the card slot is suitable for being inserted into the The memory card (10) according to any one of the above, wherein the processing unit supports the first communication protocol and the second communication protocol, so as to allow the processing unit to utilize the first communication protocol and the second communication protocol A protocol communicates with the micro control unit of the memory card. 7. An industrial device (20), characterized in that it comprises a processing unit (25) and a card slot, the processing unit is connected to the card slot, and the card slot is suitable for inserting the storage device according to claim 5 a card (10), said processing unit supporting said first communication protocol and said second communication protocol, Wherein, the industrial equipment further includes a switch module (26), the switch module is connected to a node between the first resistor and the second resistor, Wherein, the switch module turns on or off the connection between the second pin group and the processing unit according to the intelligent identification level. 8. An industrial device (20), characterized in that it comprises a processing unit (25) and a card slot, the processing unit is connected to the card slot, and the card slot is suitable for inserting into the storage device according to claim 5 a card (10), said processing unit supporting said first communication protocol and said second communication protocol, Wherein, the first communication protocol is a serial peripheral interface (SPI) protocol, and the first pin group includes SPI_CS pins, SPI_MISO pins, SPI_MOSI pins and SPI_CLK pins, Wherein, the industrial equipment further includes a switch module (26), the switch module is connected to the processing unit, Wherein, the SPI_CS pin in the first pin group is connected to a node between the first resistor and the second resistor, Wherein, the processing unit reads the intelligent identification level through the SPI_CS pin, and the processing unit controls the switch module to turn on or off the second pin group according to the intelligent identification level connection to the processing unit.