Communication device, vacuum pump and vacuum pump remote control system

Abstract

The utility model 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 application belongs to the technical field of remote communication, and particularly relates to a communication device, a vacuum pump and a vacuum pump remote control system. BACKGROUND

[0002] With the continuous development of automation technology, more and more process lines have higher demand for automation. For example, vacuum pumps are applied in many high-precision production environments. In semiconductor manufacturing, optical coating and other process lines, vacuum pumps are used to perform vacuum pumping and / or maintain a vacuum environment in a closed space or a closed container, such as a closed warehouse, a gas tank, etc. In the related art, a specific connection line is usually used to connect the vacuum pump with an upper computer, so as to perform data import operation or data export operation on the vacuum pump.

[0003] However, for most production environments, the vacuum pump is fixedly arranged at a position, and only specific professional technicians can operate the vacuum pump, and the production environment is limited, such as a dust-free environment, a low-temperature environment, etc., so it is inconvenient to use a specific connection line to connect the vacuum pump with the upper computer. CONTENT OF THE INVENTION

[0004] The application aims to provide a communication device, a vacuum pump and a vacuum pump remote control system, which can enable the vacuum pump to have a remote bidirectional communication function, and can meet the demand for remote control of the vacuum pump and remote reception of data of the vacuum pump.

[0005] The first aspect of the application provides a communication device, comprising:

[0006] A first interface unit is configured to be connected with a second interface unit of a vacuum pump.

[0007] An LTE wireless unit is configured to access an LTE network according to SIM card information.

[0008] A processing unit is connected with the first interface unit and the LTE wireless unit respectively. The processing unit is configured to receive 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 send second data received by the LTE wireless unit through the LTE network to the vacuum pump through the first interface unit.

[0009] The communication device provided by the embodiment of the application comprises a first interface unit, an LTE wireless unit and a processing unit. The first interface unit is used to be connected with a second interface unit of a vacuum pump. The LTE wireless unit is used to access an LTE network according to SIM card information. The processing unit is connected with the first interface unit and the LTE wireless unit respectively. 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 without the need of improving the circuit structure of the existing vacuum pump. The first data sent by the vacuum pump can be sent through the LTE network, and the second data received through the LTE network can also be sent to the vacuum pump, so that the vacuum pump has a remote bidirectional communication function and can meet the demand of remote control and remote receiving of the vacuum pump data, thereby providing a new scheme for the control or configuration of the vacuum pump.

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

[0011] A second interface unit is used to connect the communication device provided by the first aspect.

[0012] A second control unit is connected with the second interface unit. When the second interface unit is connected with the first interface unit, the second control unit is used to send first data to the communication device through the second interface unit and receive second data through the second interface unit.

[0013] The third aspect of the embodiment of the application provides a remote control system of a vacuum pump, comprising 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 comprises equipment information of the vacuum pump.

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

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

[0017] The communication device is also used to receive the second data through the LTE network and send the second data to the vacuum pump, wherein the second data comprises 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 aspect and the third aspect described above can be referred to the description of the first aspect, which will not be repeated here. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 A structural schematic diagram of a communication device provided by an embodiment of the present application is shown in FIG. 1.

[0020] Figure 2 A structural schematic diagram of a communication device provided by an embodiment of the present application is shown in FIG. 1. Figure 1

[0021] Figure 3 A structural schematic diagram of a communication device provided by an embodiment of the present application is shown in FIG. 1. Figure 2

[0022] Figure 4 A structural schematic diagram of a communication device provided by an embodiment of the present application is shown in FIG. 1.

[0023] Figure 5 A structural schematic diagram of a communication device provided by an embodiment of the present application is shown in FIG. 1.

[0024] Figure 6 A structural schematic diagram of a communication device provided by an embodiment of the present application is shown in FIG. 1.

[0025] Figure 7 An implementation flowchart of a vacuum pump testing method provided by an embodiment of the present application is shown in FIG. 1. DETAILED DESCRIPTION

[0026] In order to make the technical problems to be solved by the present application, the technical solutions and beneficial effects more clearly understood, the present application will be further described in detail below with reference to 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 "set 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", "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0029] Reference​​Figure 1 , Figure 1 A schematic diagram of the structure of a communication device provided in an embodiment of this application is shown.

[0030] For ease of explanation, only the parts relevant to this embodiment are shown, and are described in detail below:

[0031] exist Figure 1 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 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 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 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 to the first interface unit 10. When the communication device 100 is communicatively 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] For example, in a specific implementation, the first interface unit 10 and the second interface unit 210 can be mutually cooperating communication connectors and interfaces, such as USB connectors and USB interfaces, etc., without limitation.

[0035] In this embodiment, LTE (Long Term Evolution) network refers to the current fourth-generation mobile communication technology (4G) network. It is easy to understand that LTE networks are 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, both FDD LTE and TDD LTE standards.

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

[0037] It should be noted that, in the case that 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 communication can be performed with the server. It can be understood that the first data can specifically include 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 apparatus 100 is in communication connection with 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 apparatus 100 after being connected with the communication apparatus 100, which is not limited here.

[0038] As an example, in the case that the LTE wireless unit 20 in the communication apparatus 100 accesses the LTE network according to the SIM card information, the LTE wireless unit 20 can communicate with a target server. When the communication apparatus 100 is in communication connection with 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 can also include address information used to indicate the target server. That is, the LTE wireless unit 20 can access the target server according to the address information in the first data. For example, when the communication apparatus 100 is in communication connection with 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 can be preconfigured in the processing unit 30. The first data can include 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, i.e., the device information, the address of the target server can be determined from the correspondence, and then the LTE wireless unit 20 is instructed to access the target server through the LTE network.

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

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

[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 can generally refer to all conductive pads / conductive metal sheets in the first interface unit 10. When the first interface unit 10 is connected with 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, i.e., a path. An information receiving end and an information sending end can be provided in the bus circuit 12, and through the connection with the first gold finger 11, the communication device 100 can transmit information to the vacuum pump 200 through the bus circuit 12 and the path.

[0044] In specific implementation, the bus circuit 12 can be a communication circuit built by using a communication bus protocol, for example, the bus circuit 12 can 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 refer to a plurality of conductive pads, conductive metal sheets 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 transmission path for electrical signals by connecting with the first gold finger 11 when the first interface unit 10 is connected with the second interface unit 210 of the vacuum pump 200. The bus circuit 12 can receive the second data forwarded by the processing unit 30 through the transmission path, and send the second data to the vacuum pump 200, or receive the first data sent by the vacuum pump 200, and then transmit the first data to the processing unit 30, so that the processing unit 30 instructs the LTE wireless unit 20 to send the first data through the LTE network.

[0046] As shown in Figure 2 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 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 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 the embodiment, the first control unit 32 is connected with the bus circuit 12, and based on this, the first control unit 32 can interact with the vacuum pump 200 through the bus circuit 12 in the first interface unit 10 when the communication device 100 interacts with the vacuum pump 200.

[0048] It should be noted that because the logic levels between the processing unit 30 and the LTE wireless unit 20 are different, in order to enable the processing unit 30 and the LTE wireless unit 20 to transmit data, the level conversion unit 31 is connected between the first control unit 32 and the LTE wireless unit 20, and 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] As shown in Figure 2As shown, as an embodiment, the LTE wireless unit 20 comprises a communication chip 21, and a first storage unit 22 and / or a SIM card seat 23. The first storage unit 22 is connected with the communication chip 21, and the first storage unit 22 is used to store information of an eSIM card. The SIM card seat 23 is connected with the communication chip 21, and the SIM card seat 23 is used to set a SIM card. The communication chip 21 is used to access an LTE network by taking the information of the eSIM card in the first storage unit 22 as SIM card information, or by taking the information of the SIM card in the SIM card seat 23 as SIM card information.

[0050] In the embodiment, the SIM card (Subscriber Identity Module) is an IC card held by a mobile user of a global system for mobile communication. The global system for mobile communication identifies a user by the SIM card. The eSIM card is an electronic SIM card, and the information of the eSIM card can be regarded as a data file. In a specific implementation, the information of the eSIM card can be downloaded to the first storage unit 22 through a 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 can be simultaneously configured with the first storage unit 22 and the SIM card seat 23. When the SIM card seat 23 is not inserted with a physical SIM card, the information of the eSIM card stored in the first storage unit 22 can be used as SIM card information. When the SIM card seat 23 is inserted with a physical SIM card, the information of the physical SIM card can be used as SIM card information, or the information of the eSIM card stored in the first storage unit 22 can be used as SIM card information, which is not limited here.

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

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

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

[0055] In Figure 2 , the first power terminal 311 is used to connect a first preset power supply VCC1, and the second power terminal 312 is used to connect a 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 the first control unit 32, and the second communication connection terminal 314 is used to connect the LTE wireless unit 20.

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

[0057] In an example, taking the voltage of the first preset power supply VCC1 being greater than the voltage of the second preset power supply VCC2 as an example, it is assumed 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 be a voltage level conversion circuit composed of a switching tube and a plurality of resistors. Specifically, the high potential end of the switching 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 switching tube are respectively connected to the second preset power supply VCC2 through resistors. At the same time, the high potential end of the switching tube can be connected to the first control unit 32 as the first communication connection terminal 313, and the low potential end of the switching tube can be connected to the LTE wireless unit 20 as the second communication connection terminal 314.

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

[0059] In some embodiments, the level conversion unit 31 can also be implemented by using an existing non-directional voltage level converter, and thus details are not described herein.

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

[0061] As shown in FIG. 4, the second storage unit 40 is connected with 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. Figure 3

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

[0063] In one example, when the communication apparatus 100 is communicatively connected with the vacuum pump 200, the communication apparatus 100 can 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, the first control unit 32 in the processing unit 30 can write the received configuration file and / or log information into the second storage unit 40, or the first control unit 32 can write the received configuration file and / or log information into the second storage unit 40 through the level conversion unit 31. ​

[0064] In combination Figures 1 to 3 When the communication device 100 is communicatively connected with the vacuum pump 200, the communication device 100 can enable the vacuum pump 200 to have a remote bidirectional communication function through the LTE network. For example, the vacuum pump 200 can interact with a 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 to the second storage unit 40. Similarly, the first control unit 32 can also transmit the log information from the vacuum pump 200 to the second storage unit 40 through the level conversion unit 31 during the process of transmitting the log information to the LTE wireless unit 20 through the level conversion unit 31, or transmit the log information to the second storage unit 40 through the level conversion unit 31.

[0065] The above scheme, by providing the second storage unit 40 in the communication device 100 and connecting the second storage unit 40 with the processing unit 30, storing the configuration file written by the processing unit 30 in the second storage unit 40, when the vacuum pump 200 needs to be reset, the configuration file can be directly obtained from the second storage unit 40 to reset the system of the vacuum pump 200, improving the efficiency of resetting the system of the vacuum pump 200. By storing the log information written by the processing unit 30 in the second storage unit 40, 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, and the processing unit 30 of the communication device 100 obtains the log information from the second storage unit 40, and 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 The specific circuit diagram of the bus circuit in the embodiment of the application is shown. As Figure 4As shown in the figure, 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 a first preset power supply VCC1. The high-level bus terminal CANH of the first chip U1 is connected to the first terminal of the common-mode choke L1. The low-level bus terminal CANL of the first chip U1 is connected to the second terminal of the common-mode choke L1. The first terminal of the first resistor R1 and the first terminal of the diode D1 are connected to the third terminal of the common-mode choke L1 to form a high-level node PH. The second terminal of the first resistor R1 and the second terminal of the diode D1 are connected to the fourth terminal 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 terminal of the second resistor R2. The second terminal 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 terminal of the third resistor R3. The second terminal 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 to different conductive contacts / conductive metal sheets in the first gold finger 11.

[0068] Combination Figure 2 or Figure 3 ,exist Figure 4 In this circuit, 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 specifically be connected as the receiving terminal CAN_RX of the bus circuit 12 and the output terminal (not shown in the figure) of the first control unit 32. 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 specifically be connected as the transmitting terminal CAN_TX of the bus circuit 12 and the input terminal (not shown in the figure) of the first control unit 32.

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

[0070] Figure 5 A specific circuit diagram of the level conversion unit in an embodiment of this application is shown. For example... Figure 5 As shown in the figure, in one 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 this configuration, 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 ground, the third capacitor C3 is connected between the first power supply voltage terminal VCCA of the second chip U2 and ground, the first receiving terminal A1 of the second chip U2 is connected to the first end of the fourth resistor R4, the first transmitting terminal A2 of the second chip U2 is connected to the first end of the fifth resistor R5, the second ends of the fourth resistor R4 and the second ends of the fifth resistor R5 together serve 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 transmitting terminal B2 of the second chip U2 is connected to the first end of the seventh resistor R7, the second ends of the sixth resistor R6 and the second ends of the seventh resistor R7 together serve 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 this circuit, the second terminals of the fourth resistor R4 and the fifth resistor R5 can be connected to the data transmission terminals of the first control unit 32, respectively. The second terminals of the sixth resistor R6 and the seventh resistor R7 can be connected to the data transmission terminals of the communication chip 21, respectively. The ground terminal 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 can be 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 terminals of the fourth resistor R4 and the fifth resistor R5 can also be connected to the second storage unit 40, or the second terminals of the sixth resistor R6 and the seventh resistor R7 can also be connected to the second storage unit 40. Based on this, the communication electrical signals between the first control unit 32 and the second storage unit 40 can be adjusted when the logic level of the first control unit 32 is different from the logic level of the second storage unit 40.

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

[0076] See Figure 6 , Figure 6 A schematic diagram of the structure of a vacuum pump provided in an embodiment of this application is shown. Figure 6 As shown in the illustration, 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 data interaction between the vacuum pump 200 and the communication device 100, that is, the improvements and specific implementation methods related to this application, have all been described in [the following text is missing from the original]. Figures 1 to 5 The corresponding communication device 100 is described in detail in the embodiment, so please refer to it for details. Figures 1 to 5 ,as well as Figures 1 to 5 The relevant descriptions in the corresponding embodiments will not be repeated here.

[0079] See Figure 7 , Figure 7 A schematic diagram of a remote control system for a vacuum pump provided in an embodiment of this application is shown. Figure 7 As shown in the figure, as an embodiment, a vacuum pump remote control system 1000 includes the communication device 100, the vacuum pump 200, and the target server 300 in the above embodiments.

[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 includes at least device information of the vacuum pump 200. The communication device 100 is used to send the first data to a target server 300 via an LTE network. The target server 300 is used to send second data of itself to the communication device 100. The communication device 100 is also used to receive the second data via 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 control commands for the vacuum pump 200.

[0081] It is easy to understand that, in actual use, the target server 300 can also send commands via the communication device 100 to control the vacuum pump 200 to change certain parameters, including start / stop control of the vacuum pump 200, heating enable settings, and nitrogen parameter settings. 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.

[0082] In some embodiments, the vacuum pump 200 may also be equipped with a frequency converter (not shown in the figure). If it is necessary to modify or set the frequency converter parameters, the second control unit 220 of the vacuum pump 200 can modify or set the operating parameters of the frequency converter through the communication port with the frequency converter, such as the RS485 communication port, after receiving the parameter data.

[0083] It can be understood that the improvements and specific implementation methods of the vacuum pump remote control system provided in this embodiment, which are related to this application, have all been... Figures 1 to 6 The corresponding embodiments are described in detail, so please refer to them for specific details. Figures 1 to 6 ,as well as Figures 1 to 6 The relevant descriptions in the corresponding embodiments will not be repeated here.

[0084] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the above-described division of functional units and modules is merely an example. In practical applications, the above 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 integrated unit can be implemented in hardware or as a software functional unit.

[0085] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. A communication device, characterized in that, include: The first interface unit is used to connect to the second interface unit of the vacuum pump; The LTE radio unit is used to access the LTE network based on SIM card information; The processing unit is connected to the first interface unit and the LTE wireless unit respectively. The processing unit is used to receive 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 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 gold finger and a bus circuit; The first gold finger is connected to the bus circuit, and the bus circuit is connected to the processing unit. 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 slot; 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 slot is connected to the communication chip, and the SIM card slot is used to set the SIM card. The communication chip is used to obtain information of the eSIM card from the first storage unit as SIM card information to access the LTE network, or to obtain information of the SIM card through the SIM card slot as 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 configured to, when receiving 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 via the level conversion unit, and when receiving second data sent by the LTE wireless unit through the level conversion unit, send the second data to the vacuum pump through the first interface 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 to a first preset power supply, and the second power supply terminal is used to connect to 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 terminal is used to connect to the first control unit, the second communication connection terminal 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 terminal of the first chip is used to connect to a first preset power supply. The high-level bus terminal of the first chip is connected to the first terminal of the common-mode choke. The low-level bus terminal of the first chip is connected to the second terminal of the common-mode choke. The first terminal of the first resistor and the first terminal of the diode are connected to the third terminal of the common-mode choke to form a high-level node. The second terminal of the first resistor and the second terminal of the diode are connected to the fourth terminal of the common-mode choke to form a low-level node. The data input terminal of the first chip is connected to the first terminal of the second resistor. The second terminal of the second resistor is connected to the processing unit. The data output terminal of the first chip is connected to the first terminal of the third resistor. The second terminal 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 transmitting 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 together serve 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 transmitting 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 together serve 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 includes: A second storage unit is connected to the processing unit, and the second storage unit is used to store the configuration files and / or log information written by the processing unit.

9. A vacuum pump, characterized in that, include: The second interface unit is used to connect to the communication device according to any one of claims 1 to 7; The second control unit is connected to the second interface unit. 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 remote control system for a vacuum pump, characterized in that, Includes the communication device as described in any one of claims 1 to 8, the vacuum pump as described in claim 9, and the target server; The vacuum pump is used to send first data of the vacuum pump to the communication device, wherein the first data includes at least the device information of the vacuum pump; The communication device is used to send the first data to the target server via an 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 configured to receive the second data via 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 control commands for the vacuum pump.

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