Communication device, vacuum pump and vacuum pump remote control system

Abstract

The invention relates to the field of remote communication, and provides a communication device, a vacuum pump and a vacuum pump remote control system. The communication device comprises a first interface unit, an LTE (Long Term Evolution) wireless unit and a processing unit, the processing unit is connected with the first interface unit and the LTE wireless unit. When the communication device is connected with the second interface unit of the vacuum pump through the first interface unit, the processing unit can receive first data sent by the vacuum pump through the first interface unit and instruct the LTE wireless unit to send the first data through the LTE network. When the LTE wireless unit receives second data through the LTE network, the processing unit can also send the second data to the vacuum pump through the first interface unit. The communication device is connected with the vacuum pump under the condition that structures such as a circuit of the vacuum pump do not need to be improved, so that the vacuum pump has a remote two-way communication function, and a new scheme is provided for a control or configuration mode of the vacuum pump.

Description

Technical Field

[0001] The present application belongs to the field of remote communication technology, and in particular, relates to a communication device, a vacuum pump, and a vacuum pump remote control system. Background Art

[0002] With the continuous development of automation technology, more and more process production lines have higher and higher demands for automation. Taking vacuum pumps as an example, they are used in many high-precision production environments. In process production lines such as semiconductor manufacturing and optical coating, vacuum pumps are used to evacuate and / or maintain a vacuum environment in closed spaces or closed containers, such as closed warehouses and gas tanks. In related technologies, a specific connecting line is usually used to connect the vacuum pump to the host computer, so as to import or export data from the vacuum pump.

[0003] However, in most production environments, the vacuum pump is set in a fixed position, and specific professional technicians are required to operate the vacuum pump. In addition, due to the limitations of the production environment, such as dust-free environment, low-temperature environment, etc., it is not convenient to use a specific connecting line to connect the vacuum pump to the host computer. Summary of the invention

[0004] The purpose of the present application is to provide a communication device, a vacuum pump and a vacuum pump remote control system, providing a new solution that can enable the vacuum pump to have a remote two-way communication function and can meet the needs of remote control of the vacuum pump and remote reception of vacuum pump data.

[0005] A first aspect of an embodiment of the present application provides a communication device, including:

[0006] A first interface unit, used to connect to a second interface unit of a vacuum pump;

[0007] LTE wireless unit, used to access the LTE network according to the SIM card information;

[0008] The processing unit is connected to the first interface unit and the LTE wireless unit respectively. The processing unit is used to receive the first data sent by the vacuum pump through the first interface unit, instruct the LTE wireless unit to send the first data through the LTE network, and when the LTE wireless unit receives the second data through the LTE network, send the second data to the vacuum pump through the first interface unit.

[0009] A communication device provided in an embodiment of the present application includes a first interface unit, an LTE wireless unit, and a processing unit. The first interface unit is used to connect to the second interface unit of a vacuum pump. The LTE wireless unit is used to access the LTE network according to SIM card information. The processing unit is connected to the first interface unit and the LTE wireless unit respectively. When the communication device is connected to the second interface unit of the vacuum pump through the first interface unit, the processing unit can receive the first data sent by the vacuum pump through the first interface unit, and instruct the LTE wireless unit to send the first data through the LTE network. When the LTE wireless unit receives the second data through the LTE network, the processing unit can also send the second data to the vacuum pump through the first interface unit. It is realized that the communication device is connected to the vacuum pump without the need to improve the circuit structure of the existing vacuum pump, and not only the first data sent by the vacuum pump can be sent through the LTE network, but also the second data received through the LTE network can be sent to the vacuum pump, so that the vacuum pump has a remote two-way communication function, which can meet the needs of remote control of the vacuum pump and remote reception of vacuum pump data, and provide a new solution for the way to control or configure the vacuum pump.

[0010] A second aspect of an embodiment of the present application provides a vacuum pump, comprising:

[0011] A second interface unit, used to connect to the communication device provided by the first aspect above;

[0012] The second control unit is connected to the second interface unit, and is used for sending the first data to the communication device through the second interface unit and receiving the second data through the second interface unit when the second interface unit is connected to the first interface unit.

[0013] A third aspect of the embodiments of the present application provides a vacuum pump remote control system, including the communication device provided by the first aspect, the vacuum pump provided by the second aspect, and a target server;

[0014] The vacuum pump is used to send first data of the vacuum pump to the communication device, wherein the first data at least includes equipment information of the vacuum pump;

[0015] The communication device is used to send the first data to the target server through the LTE network;

[0016] The target server is used to send the second data of the target server to the communication device;

[0017] The communication device is also used to receive second data through the LTE network and send the second data to the vacuum pump, wherein the second data includes a configuration file corresponding to the vacuum pump and / or a control instruction of the vacuum pump.

[0018] It can be understood that the beneficial effects of the second and third aspects mentioned above can be found in the relevant description of the first aspect mentioned above, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the structure of a communication device provided in an embodiment of the present application;

[0020] Figure 2 A specific structural diagram of a communication device provided in an embodiment of the present application Figure 1 ;

[0021] Figure 3 A specific structural diagram of a communication device provided in an embodiment of the present application Figure 2 ;

[0022] Figure 4 A schematic diagram of the structure of a communication device provided in another embodiment of the present application;

[0023] Figure 5 A schematic diagram of the structure of a communication device provided in yet another embodiment of the present application;

[0024] Figure 6 A schematic diagram of a specific structure of a communication device provided in yet another embodiment of the present application;

[0025] Figure 7 A flowchart for implementing a vacuum pump testing method provided in an embodiment of the present application. DETAILED DESCRIPTION

[0026] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0027] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0028] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0029] See also Figure 1 , Figure 1 A schematic structural diagram of a communication device provided in an embodiment of the present application is shown.

[0030] For ease of explanation, only the parts related to this embodiment are shown, which are described in detail as follows:

[0031] exist Figure 1 In the present invention, a communication device 100 includes: a first interface unit 10, an LTE wireless unit 20 and a processing unit 30. Specifically:

[0032] The first interface unit 10 is used to connect to the second interface unit 210 of the vacuum pump 200. The LTE wireless unit 20 is used to access the LTE network according to the SIM card information. The processing unit 30 is connected to the first interface unit 10 and the LTE wireless unit 20 respectively. The processing unit 30 is used to receive the first data sent by the vacuum pump through the first interface unit 10, instruct the LTE wireless unit 20 to send the first data through the LTE network, and when the LTE wireless unit 20 receives the second data through the LTE network, send the second data to the vacuum pump 200 through the first interface unit 10.

[0033] In this embodiment, the first interface unit 10 generally refers to a physical interface that can be detachably connected to the second interface unit 210 of the vacuum pump 200. Correspondingly, the second interface unit 210 is a physical interface that can be connected with the first interface unit 10. When the communication device 100 is connected to the second interface unit 210 of the vacuum pump 200 through the first interface unit 10, the communication device 100 can exchange information with the vacuum pump 200. Since the first interface unit 10 is connected to the processing unit 30, when the first interface unit 10 is connected to the second interface unit 210, the processing unit 30 can communicate with the vacuum pump 200 through the physical path formed by the first interface unit 10 and the second interface unit 210.

[0034] Exemplarily, in a specific implementation, the first interface unit 10 and the second interface unit 210 may be mutually cooperating communication plug connectors and plug interfaces, such as a USB plug connector and a USB plug interface, etc., which is not limited here.

[0035] In this embodiment, the LTE (Long Term Evolution) network refers to the current fourth generation mobile communication technology (4G) communication network. It is easy to understand that the LTE network is divided into two standards, FDD LTE and TDD LTE, corresponding to LTE-FDD and LTE-TDD respectively. The LTE network in this embodiment may include but is not limited to the two standards of FDD LTE and TDD LTE.

[0036] In specific implementation, the LTE wireless unit 20 can be implemented using an existing LTE communication module. Through the information of the built-in virtual eSIM card and / or the physical SIM card, after the communication device 100 is powered on, the LTE wireless unit 20 can automatically access the LTE network according to the SIM card information.

[0037] It should be noted that, when the LTE wireless unit 20 accesses the LTE network according to the SIM card information, the corresponding server can be accessed through the LTE network and communicate with the server. It is understandable that the first data can specifically include the device information of the vacuum pump, and the device information can be used to distinguish different vacuum pumps. In all embodiments of the present application, when the communication device 100 is connected to the second interface unit 210 of the vacuum pump 200 through the first interface unit 10, the processing unit 30 can actively send a device information acquisition request to the vacuum pump 200, and then receive the first data sent by the vacuum pump 200. Alternatively, the vacuum pump 200 can also actively send the first data to the communication device 100 after being connected to the communication device 100, which is not limited here.

[0038] As an example, the LTE wireless unit 20 in the communication device 100 can communicate with the target server when accessing the LTE network according to the SIM card information. When the communication device 100 is connected to the second interface unit 210 of the vacuum pump 200 through the first interface unit 10, the processing unit 30 receives the first data sent by the vacuum pump 200 and instructs the LTE wireless unit 20 to send the first data to the target server through the LTE network. When the LTE wireless unit 20 receives the second data sent by the target server through the LTE network, the processing unit 30 can send the second data to the vacuum pump 200 through the first interface unit 10.

[0039] In a specific implementation, the first data may also include address information for indicating a target server. That is, the LTE wireless unit 20 may access the target server according to the address information in the first data. For example, when the communication device 100 is connected to the second interface unit 210 of the vacuum pump 200 through the first interface unit 10, the processing unit 30 receives the first data sent by the vacuum pump 200, and instructs the LTE wireless unit 20 to send the device information of the vacuum pump in the first data to the target server through the LTE network according to the address of the target server in the first data.

[0040] In other embodiments, the correspondence between different device information and different target server addresses may be preconfigured in the processing unit 30. The first data may include the device information of the vacuum pump 200. The processing unit 30 receives the first data sent by the vacuum pump 200, and according to the first data, that is, the device information, the address of the target server may be determined from the above correspondence, thereby instructing the LTE wireless unit 20 to access the target server through the LTE network.

[0041] It is easy to understand that in the above example, the processing unit 30 establishes a wireless communication link between the vacuum pump 200 and the target server by instructing the LTE wireless unit 20 to access the target server through the LTE network according to the first data. At this time, the vacuum pump 200 can send the first data to the target server through the communication device 100, such as sending the log file of the vacuum pump. At the same time, the target server can also send the second data, such as control instructions, configuration files, etc., to the communication device 100, so that the vacuum pump 200 has a remote two-way communication function, which can meet the needs of remote control of the vacuum pump 200 and remote reception of vacuum pump 200 data.

[0042] Figure 2 FIG. 1 is a schematic diagram showing a specific structure of a communication device provided in an embodiment of the present application. Figure 2 As shown, as an embodiment, the first interface unit 10 includes a first gold finger 11 and a bus circuit 12. The first gold finger 11 is connected to the bus circuit 12, and the bus circuit 12 is connected to the processing unit 30. The first gold finger 11 is used to contact the second gold finger 211 of the second interface unit 210 when the first interface unit 10 is connected to the second interface unit 210 of the vacuum pump 200.

[0043] In this embodiment, the first gold finger 11 in the first interface unit 10 corresponds to the second gold finger 211 in the second interface unit 210. The first gold finger 11 may generally refer to all conductive contacts / conductive metal sheets in the first interface unit 10. When the first interface unit 10 is connected to the second interface unit 210 of the vacuum pump 200, the first gold finger 11 of the first interface unit 10 contacts the second gold finger 211 of the second interface unit 210 to form an electrical connection, that is, to form a path. An information receiving end and an information sending end may be set in the bus circuit 12. By connecting with the first gold finger 11, the communication device 100 may transmit information with the vacuum pump 200 through the bus circuit 12 and the path.

[0044] In a specific implementation, the bus circuit 12 may adopt a communication circuit constructed using an existing communication bus protocol. For example, the bus circuit 12 may include a CAN bus circuit, an I2C bus circuit, etc., which is not limited here.

[0045] It is easy to understand that the first gold finger 11 can generally refer to a plurality of conductive contact pieces, conductive metal pieces or metal contacts corresponding to the second gold finger 211 in the second interface unit 210. The plurality of connection terminals of the bus circuit 12 can form a path for transmitting electrical signals when the first interface unit 10 is connected to the second interface unit 210 of the vacuum pump 200 by connecting to the first gold finger 11. Through the path, the bus circuit 12 can receive the second data forwarded by the processing unit 30 and send the second data to the vacuum pump 200, and can also receive the first data sent by the vacuum pump 200 and then transmit it to the processing unit 30, and the processing unit 30 instructs the LTE wireless unit 20 to send the first data through the LTE network.

[0046] like Figure 2 As shown, as an embodiment, the processing unit 30 includes a level conversion unit 31 and a first control unit 32. The level conversion unit 31 is connected between the LTE wireless unit 20 and the first control unit 32, and the level conversion unit 31 is used to adjust the voltage of the communication electrical signal between the LTE wireless unit 20 and the first control unit 32. The first control unit 32 is used to instruct the LTE wireless unit 20 to send the first data through the LTE network through the level conversion unit 31 when receiving the first data sent by the vacuum pump 200 through the first interface unit 10, and to send the second data to the vacuum pump 200 through the first interface unit 10 when receiving the second data sent by the LTE wireless unit 20 through the level conversion unit 31.

[0047] In this embodiment, the first control unit 32 is connected to the bus circuit 12. Based on this, when the communication device 100 interacts with the vacuum pump 200, the first control unit 32 can interact with the vacuum pump 200 through the bus circuit 12 in the first interface unit 10.

[0048] It should be noted that, since the logic levels between the processing unit 30 and the LTE wireless unit 20 are different, in order to enable data transmission between the processing unit 30 and the LTE wireless unit 20, a level conversion unit 31 is connected between the first control unit 32 and the LTE wireless unit 20. By adjusting the voltage of the communication electrical signal between the LTE wireless unit 20 and the first control unit 32, data interaction can be performed even when the logic levels between the processing unit 30 and the LTE wireless unit 20 are different.

[0049] like Figure 2As shown, as an embodiment, the LTE wireless unit 20 includes a communication chip 21, and a first storage unit 22 and / or a SIM card holder 23. The first storage unit 22 is connected to the communication chip 21, and the first storage unit 22 is used to store the information of the eSIM card. The SIM card holder 23 is connected to the communication chip 21, and the SIM card holder 23 is used to set the SIM card. The communication chip 21 is used to obtain the information of the eSIM card from the first storage unit 22 as the SIM card information to access the LTE network, or obtain the information of the SIM card through the SIM card holder 23 as the SIM card information to access the LTE network.

[0050] In this embodiment, the SIM card (Subscriber Identity Module) is an IC card held by a mobile user of the global mobile communication system. The global mobile communication system identifies users through SIM cards. The eSIM card is an electronic SIM card, and the information of the eSIM card can be regarded as a data file. In specific implementation, the information of the eSIM card can be downloaded to the first storage unit 22 through the network, or the information of the eSIM card can be directly copied to the first storage unit 22.

[0051] In a specific implementation, the LTE wireless unit 20 may be configured with a first storage unit 22 and a SIM card holder 23. When the SIM card holder 23 is not inserted with a physical SIM card, the information of the eSIM card stored in the first storage unit 22 may be used as the SIM card information. When the SIM card holder 23 is inserted with a physical SIM card, the information of the physical SIM card may be used as the SIM card information, or the information of the eSIM card stored in the first storage unit 22 may be used as the SIM card information, which is not limited here.

[0052] As an example, after the communication device 100 is connected to the second interface unit 210 of the vacuum pump 200 through the first interface unit 10, it can directly obtain power from the vacuum pump 200 to work. Here, only when the communication device 100 is connected to the vacuum pump 200, on the basis of obtaining working power from the vacuum pump 200, the communication chip 21 in the LTE wireless unit 20 obtains the information of the eSIM card as the SIM card information to access the LTE network, or obtains the information of the SIM card as the SIM card information through the SIM card holder 23 to access the LTE network.

[0053] As another example, the communication device 100 may also be configured with a power supply, and may directly obtain power from the power supply to operate when the first interface unit 10 is not connected to the second interface unit 210 of the vacuum pump 200. Here, when the communication device 100 is not connected to the vacuum pump 200, the LTE wireless unit 20 may obtain working power from the power supply. At this time, the communication chip 21 in the LTE wireless unit 20 may obtain the information of the eSIM card as the SIM card information to access the LTE network, or obtain the information of the SIM card as the SIM card information to access the LTE network through the SIM card holder 23. After the first interface unit 10 is connected to the second interface unit 210 of the vacuum pump 200, the communication device 100 may switch to obtain power from the vacuum pump 200 to operate.

[0054] like Figure 2 As shown, as an embodiment, the level conversion unit 31 includes a first power supply terminal 311 , a second power supply terminal 312 , a first communication connection terminal 313 and a second communication connection terminal 314 .

[0055] exist Figure 2 In the embodiment, the first power supply terminal 311 is used to connect to the first preset power supply VCC1, and the second power supply terminal 312 is used to connect to the second preset power supply VCC2. The voltage of the first preset power supply VCC1 is different from the voltage of the second preset power supply VCC2. The first communication connection terminal 313 is used to connect to the first control unit 32, and the second communication connection terminal 314 is used to connect to the LTE wireless unit 20.

[0056] In this embodiment, the level conversion unit 31 may be a non-directional voltage level conversion circuit, that is, no direction control signal is needed to control the direction of the data flow between the first communication connection terminal 313 and the second communication connection terminal 314 .

[0057] In one example, taking the voltage of the first preset power supply VCC1 as greater than the second preset power supply VCC2 as an example, assuming that the voltage of the first preset power supply VCC1 is between 3.5V and 3V, and the voltage of the second preset power supply VCC2 is between 1.8V and 1.3V. In this example, the level conversion unit 31 can specifically be a voltage level conversion circuit composed of a switch tube and a plurality of resistors. Specifically, the high potential end of the switch tube can be connected to the first preset power supply VCC1 through a resistor, and the controlled end and the low potential end of the switch tube are respectively connected to the second preset power supply VCC2 through resistors. At the same time, the high potential end of the switch tube can be connected to the first control unit 32 as the first communication connection end 313, and the low potential end of the switch tube can be connected to the LTE wireless unit 20 as the second communication connection end 314.

[0058] In this example, taking the switch tube as a MOS tube as an example, when the first control unit 32 inputs a 3.3V high-level signal to the high potential end (drain) of the MOS tube, the low potential end (source) of the MOS tube receives a 1.8V high level, thereby realizing the conversion of the 3.3V level electrical signal into a 1.8V level electrical signal. When the first control unit 32 inputs a 0V low-level signal to the high potential end (drain) of the MOS tube, the body diode of the MOS tube is turned on, and the voltage of the low potential end (source) of the MOS tube is pulled down to a low level less than 1V, such as a 0.3V low level, a 0.5V low level, or a 0.7V low level, thereby realizing the conversion of the low-level electrical signal. When the LTE wireless unit 20 inputs a 1.8V high-level signal to the low potential end (source) of the MOS tube, the MOS tube is not turned on. At this time, the high potential end (drain) of the MOS tube obtains the voltage of 3.3V of the first preset power supply VCC1, thereby realizing the conversion of the 1.8V high-level electrical signal into a 3.3V high-level electrical signal. When the LTE wireless unit 20 inputs a low-level signal of 0V to the low potential end of the MOS tube, the gate of the MOS tube inputs the voltage 1.8V of the second preset power supply VCC2, the MOS tube is turned on, and the high potential end of the MOS tube is pulled down to 0V, realizing the conversion of the low-level electrical signal.

[0059] In some embodiments, the level conversion unit 31 may also be implemented by using an existing non-directional voltage level converter, which is not described in detail here.

[0060] Figure 3 A specific structural diagram of a communication device provided by another embodiment of the present application is shown. As an embodiment, the communication device 100 further includes: a second storage unit 40.

[0061] like Figure 3 As shown, the second storage unit 40 is connected to the processing unit 30. The second storage unit 40 is used to store the configuration file and / or log information written by the processing unit 30.

[0062] In this embodiment, the second storage unit 40 may be specifically connected to the first control unit 32 and / or connected to the level conversion unit 31 .

[0063] In one example, after the communication device 100 is connected to the vacuum pump 200 for communication, the communication device 100 may receive the configuration file and / or log information of the vacuum pump 200 through the first interface unit 10, and the processing unit 30 writes the received configuration file and / or log information into the second storage unit 40. Here, specifically, the first control unit 32 in the processing unit 30 may write the received configuration file and / or log information into the second storage unit 40, or the first control unit 32 may write the received configuration file and / or log information into the second storage unit 40 through the level conversion unit 31.

[0064] Combination Figures 1 to 3 , when the communication device 100 is connected to the vacuum pump 200 for communication, the communication device 100 can enable the vacuum pump 200 to have a remote two-way communication function through the LTE network. For example, the vacuum pump 200 can interact with the target server through the communication device 100. In another example, the target server can send a configuration file to the communication device 100, and the LTE wireless unit 20 receives the configuration file and transmits it to the first control unit 32 through the level conversion unit 31. The first control unit 32 can store the configuration file in the second storage unit 40. Similarly, in the process of the first control unit 32 transmitting the log information from the vacuum pump 200 to the LTE wireless unit 20 through the level conversion unit 31, the log information can also be transmitted to the second storage unit 40, or transmitted to the second storage unit 40 through the level conversion unit 31.

[0065] In the above scheme, by setting a second storage unit 40 in the communication device 100 and connecting the second storage unit 40 to the processing unit 30, the second storage unit 40 is used to store the configuration file written by the processing unit 30. When the vacuum pump 200 needs to perform a system reset, the configuration file can be directly obtained from the second storage unit 40 to perform a system reset operation on the vacuum pump 200, thereby improving the efficiency of resetting the system of the vacuum pump 200. By using the second storage unit 40 to store the log information written by the processing unit 30, in the scenario where the log information needs to be uploaded, the communication device 100 does not need to interact with the vacuum pump 200 again. After the processing unit 30 of the communication device 100 obtains the log information from the second storage unit 40, it instructs the LTE wireless unit 20 to upload the log information through the LTE network, such as instructing the LTE wireless unit 20 to upload the log information to the target server through the LTE network, thereby improving the efficiency of uploading the log information.

[0066] Figure 4 Detailed circuit diagram of the bus circuit in the embodiment of the present application is shown. Figure 4As shown, as an embodiment, as an embodiment, the bus circuit 12 includes: a first chip U1, a common mode choke L1, a first resistor R1, a second resistor R2, a third resistor R3, a first capacitor C1 and a diode D1. The power supply terminal VCC of the first chip U1 is used to connect to the first preset power supply VCC1, the high level bus terminal CANH of the first chip U1 is connected to the first end of the common mode choke L1, the low level bus terminal CANL of the first chip U1 is connected to the second end of the common mode choke L1, the first end of the first resistor R1 and the first end of the diode D1 are connected to the third end of the common mode choke L1 to form a high level node PH, the second end of the first resistor R1 and the second end of the diode D1 are connected to the fourth end of the common mode choke L1 to form a low level node PL, the data input terminal R of the first chip U1 is connected to the first end of the second resistor R2, the second end of the second resistor R2 is connected to the processing unit 30, the data output terminal D of the first chip U1 is connected to the first end of the third resistor R3, and the second end of the third resistor R3 is connected to the processing unit 30.

[0067] In this embodiment, since the first gold finger 11 generally refers to multiple conductive contacts / conductive metal sheets in the first interface unit 10, the high level node PH and the low level node PL are respectively connected to the first gold finger 11, specifically connected to different conductive contacts / conductive metal sheets in the first gold finger 11.

[0068] Combination Figure 2 or Figure 3 ,exist Figure 4 In the figure, since the second resistor R2 is connected between the data input terminal R of the first chip U1 and the processing unit 30, the second end of the second resistor R2 can be specifically connected to the output terminal (not shown in the figure) of the first control unit 32 as the receiving terminal CAN_RX of the bus circuit 12. Similarly, since the third resistor R3 is connected between the data output terminal D of the first chip U1 and the processing unit 30, the second end of the third resistor R3 can be specifically connected to the input terminal (not shown in the figure) of the first control unit 32 as the transmitting terminal CAN_TX of the bus circuit 12.

[0069] like Figure 4 As shown, in some embodiments, the bus circuit 12 may further include a current limiting resistor R, the LBK terminal of the first chip U1 may be connected to the first preset power supply VCC1 through the current limiting resistor R, and the RS terminal of the first chip U1 may be grounded through the current limiting resistor R.

[0070] Figure 5 Detailed circuit diagram of the level conversion unit in the embodiment of the present application is shown. Figure 5As shown, as an embodiment, the level conversion unit 31 includes a second chip U2, a second capacitor C2, a third capacitor C3, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7 and an eighth resistor R8.

[0071] Combination Figure 2 or Figure 3 ,exist Figure 5 In the embodiment, the first power supply voltage terminal VCCA of the second chip U2 serves as the first power supply terminal 311, the second power supply voltage terminal VCCB of the second chip U2 serves as the second power supply terminal 312, the second capacitor C2 is connected between the second power supply voltage terminal VCCB of the second chip U2 and the ground, the third capacitor C3 is connected between the first power supply voltage terminal VCCA of the second chip U2 and the ground, the first receiving terminal A1 of the second chip U2 is connected to the first end of the fourth resistor R4, the first sending terminal A2 of the second chip U2 is connected to the first end of the fifth resistor R5, the second end of the fourth resistor R4 and the second end of the fifth resistor R5 are jointly used as the first communication connection terminal 313, the second receiving terminal B1 of the second chip U2 is connected to the first end of the sixth resistor R6, the second sending terminal B2 of the second chip U2 is connected to the first end of the seventh resistor R7, the second end of the sixth resistor R6 and the second end of the seventh resistor R7 are jointly used as the second communication connection terminal 314, and the eighth resistor R is connected between the enable terminal OE of the second chip U2 and the second preset power supply VCC2.

[0072] Combination Figure 2 or Figure 3 ,exist Figure 5 In the embodiment, the second end of the fourth resistor R4 and the second end of the fifth resistor R5 can be respectively connected to the data transmission end of the first control unit 32. The second end of the sixth resistor R6 and the second end of the seventh resistor R7 can be respectively connected to the data transmission end of the communication chip 21. The bottom line end GND of the second chip U2 is grounded.

[0073] It is easy to understand that in Figure 5 In this embodiment, the second chip U2 provided can be specifically a non-directional voltage level converter, the second capacitor C2 can filter the supply voltage of the second preset power supply VCC2, and similarly, the third capacitor C3 can filter the supply voltage of the first preset power supply VCC1.

[0074] In a specific implementation, the second end of the fourth resistor R4 and the second end of the fifth resistor R5 may also be connected to the second storage unit 40, or the second end of the sixth resistor R6 and the second end of the seventh resistor R7 may also be connected to the second storage unit 40. Based on this, when the logic level of the first control unit 32 is different from the logic level of the second storage unit 40, the communication electrical signal between the first control unit 32 and the second storage unit 40 may be adjusted.

[0075] The above scheme realizes that the vacuum pump 200 can have a remote two-way communication function without making structural improvements such as electronic circuits to the existing vacuum pump 200, which can meet the needs of remote control of the vacuum pump 200 and remote reception of vacuum pump 200 data, and provides a new solution for controlling or configuring the vacuum pump 200.

[0076] See also Figure 6 , Figure 6 FIG. 1 is a schematic diagram showing the structure of a vacuum pump provided in an embodiment of the present application. Figure 6 As shown, as an embodiment, a vacuum pump 200 includes: a second interface unit 210 for connecting to the communication device 100 in the above embodiment; and a second control unit 220 connected to the second interface unit 210 .

[0077] In this embodiment, the second control unit 220 is used to send first data to the communication device 100 through the second interface unit 210 and receive second data through the second interface unit 210 when the second interface unit 210 is connected to the first interface unit 10 .

[0078] It can be understood that the vacuum pump 200 provided in this embodiment can be any existing vacuum pump. Figure 6 The specific implementation process of the vacuum pump 200 and the communication device 100 for data interaction, that is, the improvements and specific implementation methods related to the present application, have been described in detail in the following. Figures 1 to 5 The corresponding embodiment of the communication device 100 is described in detail, so please refer to Figures 1 to 5 ,as well as Figures 1 to 5 The relevant descriptions in the corresponding embodiments are not repeated here.

[0079] See also Figure 7 , Figure 7 FIG. 1 is a schematic diagram showing the structure of a vacuum pump remote control system provided by an embodiment of the present application. Figure 7 As shown, as an embodiment, a vacuum pump remote control system 1000 includes the communication device 100 in the above embodiment, the vacuum pump 200 in the above embodiment, and a target server 300.

[0080] In this embodiment, the vacuum pump 200 is used to send first data of the vacuum pump to the communication device 100. The first data at least includes device information of the vacuum pump 200. The communication device 100 is used to send the first data to the target server 300 through the LTE network. The target server 300 is used to send second data of the target server 300 to the communication device 100. The communication device 100 is also used to receive the second data through the LTE network and send the second data to the vacuum pump 200. The second data includes a configuration file corresponding to the vacuum pump 200 and / or a control instruction of the vacuum pump 200.

[0081] Exemplarily, after the vacuum pump 200 is connected to the communication device 100, the communication device 100 communicates with the target server 300 based on the HTTP protocol. The specific steps may be as follows:

[0082] Initialization of the vacuum pump 200: The USART communication settings of the second control unit 220 are set to be consistent with the baud rate, data bits, and stop bits of the LTE wireless unit 20 in the communication device 100.

[0083] Start the connection: The second control unit 220 sends an AT command to the communication device 100 through the second interface unit 210 to check whether the LTE wireless unit 20 is working properly, then query the online status of the SIM card, start the LTE network connection, and obtain the corresponding IP address after connecting to the mobile network.

[0084] The communication device 100 establishes an HTTP connection: initializes the HTTP service to set the target URL, and then sends the first data, such as the version information of the vacuum pump 200, to the target server 300. The target server 300 returns a target signal to the communication device 100 based on the first data, such as the configuration file corresponding to the vacuum pump 200 and / or the control instructions of the vacuum pump.

[0085] It is easy to understand that in actual use, the target server 300 can also send a command to control the vacuum pump 200 to change a certain parameter through the communication device 100, including the start and stop control of the vacuum pump 200, the heating enable setting, the nitrogen parameter setting, etc. After receiving the command, the communication device 100 transmits it to the second control unit 220 of the vacuum pump 200 through the first interface unit 10. The second control unit 220 receives and executes the received command.

[0086] In some embodiments, the vacuum pump 200 may also be provided with a frequency converter (not shown in the figure). If the frequency converter parameters need to be modified or set, after the second control unit 220 of the vacuum pump 200 receives the parameter data, it can modify or set the operating parameters of the frequency converter through a communication port with the frequency converter, such as an RS485 communication port.

[0087] It can be understood that the vacuum pump remote control system provided in this embodiment, the improvements and specific implementation methods related to this application have been Figures 1 to 6 The corresponding embodiments are described in detail, so please refer to Figures 1 to 6 ,as well as Figures 1 to 6 The relevant descriptions in the corresponding embodiments are not repeated here.

[0088] Those skilled in the art can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional units and modules is used as an example. In actual applications, the above-mentioned functions can be assigned to different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiments can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The above-mentioned integrated unit can be implemented in the form of hardware or in the form of software functional units.

[0089] The embodiments described above are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A communication device, characterized in that: include: A first interface unit, used to connect to a second interface unit of a vacuum pump; LTE wireless unit, used to access the LTE network according to the SIM card information; A processing unit is connected to the first interface unit and the LTE wireless unit respectively, and is used to receive the first data sent by the vacuum pump through the first interface unit, instruct the LTE wireless unit to send the first data through the LTE network, and when the LTE wireless unit receives the second data through the LTE network, send the second data to the vacuum pump through the first interface unit.

2. The communication device according to claim 1, characterized in that The first interface unit includes a first golden finger and a bus circuit; The first gold finger is connected to the bus circuit, the bus circuit is connected to the processing unit, and the first gold finger is used to contact the second gold finger of the second interface unit when the first interface unit is connected to the second interface unit of the vacuum pump.

3. The communication device according to claim 1, characterized in that The LTE wireless unit includes a communication chip, a first storage unit and / or a SIM card holder; The first storage unit is connected to the communication chip, and the first storage unit is used to store information of the eSIM card; The SIM card holder is connected to the communication chip, and the SIM card holder is used to set the SIM card; The communication chip is used to obtain the information of the eSIM card from the first storage unit as the SIM card information to access the LTE network, or to obtain the information of the SIM card through the SIM card holder as the SIM card information to access the LTE network.

4. The communication device according to claim 1, characterized in that: The processing unit includes a level conversion unit and a first control unit; The level conversion unit is connected between the LTE wireless unit and the first control unit, and the level conversion unit is used to adjust the voltage of the communication electrical signal between the LTE wireless unit and the first control unit; The first control unit is used to instruct the LTE wireless unit to send the first data through the LTE network through the level conversion unit when first data sent by the vacuum pump is received through the first interface unit, and to send the second data to the vacuum pump through the first interface unit when second data sent by the LTE wireless unit is received through the level conversion unit.

5. The communication device according to claim 4, characterized in that: The level conversion unit includes a first power supply terminal, a second power supply terminal, a first communication connection terminal and a second communication connection terminal; The first power supply terminal is used to connect a first preset power supply, and the second power supply terminal is used to connect a second preset power supply; wherein the voltage of the first preset power supply is different from the voltage of the second preset power supply; The first communication connection end is used to connect to the first control unit, the second communication connection end is used to connect to the LTE wireless unit, and the level conversion unit is used to adjust the voltage of the communication electrical signal between the LTE wireless unit and the first control unit based on the voltage of the first preset power supply and the voltage of the second preset power supply.

6. The communication device according to claim 2, characterized in that: The bus circuit includes: a first chip, a common mode choke, a first resistor, a second resistor, a third resistor, a first capacitor and a diode; The power supply end of the first chip is used to connect to a first preset power supply, the high-level bus end of the first chip is connected to the first end of the common-mode choke, the low-level bus end of the first chip is connected to the second end of the common-mode choke, the first end of the first resistor and the first end of the diode are connected to the third end of the common-mode choke to form a high-level node, the second end of the first resistor and the second end of the diode are connected to the fourth end of the common-mode choke to form a low-level node, the data input end of the first chip is connected to the first end of the second resistor, the second end of the second resistor is connected to the processing unit, the data output end of the first chip is connected to the first end of the third resistor, and the second end of the third resistor is connected to the processing unit.

7. The communication device according to claim 5, characterized in that: The level conversion unit includes a second chip, a second capacitor, a third capacitor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor and an eighth resistor; The first power supply voltage terminal of the second chip serves as the first power supply terminal, the second power supply voltage terminal of the second chip serves as the second power supply terminal, the second capacitor is connected between the second power supply voltage terminal of the second chip and ground, the third capacitor is connected between the first power supply voltage terminal of the second chip and ground, the first receiving terminal of the second chip is connected to the first end of the fourth resistor, the first sending terminal of the second chip is connected to the first end of the fifth resistor, the second end of the fourth resistor and the second end of the fifth resistor are jointly used as the first communication connection terminal, the second receiving terminal of the second chip is connected to the first end of the sixth resistor, the second sending terminal of the second chip is connected to the first end of the seventh resistor, the second end of the sixth resistor and the second end of the seventh resistor are jointly used as the second communication connection terminal, and the eighth resistor is connected between the enable terminal of the second chip and the second preset power supply.

8. The communication device according to any one of claims 1 to 7, characterized in that: The communication device further comprises: A second storage unit is connected to the processing unit, and the second storage unit is used to store configuration files and / or log information written by the processing unit.

9. A vacuum pump, characterized in that: include: A second interface unit, used to connect the communication device according to any one of claims 1 to 7; A second control unit is connected to the second interface unit, and the second control unit is used to send the first data to the communication device through the second interface unit and receive the second data through the second interface unit when the second interface unit is connected to the first interface unit.

10. A vacuum pump remote control system, characterized in that: comprising the communication device according to any one of claims 1 to 8, the vacuum pump according to claim 9, and a target server; The vacuum pump is used to send first data of the vacuum pump to the communication device, wherein the first data at least includes equipment information of the vacuum pump; The communication device is used to send the first data to the target server through the LTE network; The target server is used to send the second data of the target server to the communication device; The communication device is further used to receive the second data through an LTE network, and send the second data to the vacuum pump, wherein the second data includes a configuration file corresponding to the vacuum pump and / or a control instruction of the vacuum pump.

Images