Virtual measuring instrument adopting NFC data interaction and energy collection

Abstract

A virtual measuring instrument adopting NFC data interaction and energy collection comprises a sensing detection processing module, an intelligent terminal and a connecting mechanism, the sensing detection processing module comprises a module NFC antenna, an NFC processing unit and a sensing detection unit, a measurement and control signal of the sensing detection unit is in data interaction with a wired interface of the NFC processing unit, and the intelligent terminal is connected with the sensing detection unit. A power supply of the sensing detection unit is provided by electromagnetic field energy collected by the module NFC antenna, the module NFC antenna and the terminal NFC antenna form a mutual coupling inductor through a coupling mechanism, and the intelligent terminal realizes electric energy transmission and wireless data interaction with the sensing detection processing module through electromagnetic induction coupling between the NFC antennas. According to the virtual instrument provided by the invention, electric energy transmission and data interaction between the intelligent terminal and the sensing detection processing module do not need direct contact electric connection, so that connection abrasion is avoided, and the reliability and the use convenience of a virtual measuring instrument hardware platform are improved.

Description

Technical Field

[0001] This invention relates to the field of measuring instruments, and in particular to a virtual measuring instrument employing NFC data interaction and energy harvesting. Background Technology

[0002] NFC stands for Near Field Communication, a short-range, high-frequency radio technology. The NFC IP-1 standard specifies a communication distance of less than 10 centimeters and an operating frequency of 13.56 MHz. It utilizes electromagnetic coupling between NFC antennas for data exchange and power transfer. Devices using NFC technology can exchange data when they are close to each other. It integrates inductive card readers, inductive cards, and peer-to-peer communication functions onto a single chip. Currently, it is mainly used in mobile smart terminals to achieve functions such as mobile payment, electronic ticketing, access control, mobile identity verification, and anti-counterfeiting.

[0003] A virtual instrument (VI) is a digital measurement system that uses a general-purpose computer and measurement hardware modules with standard interfaces to form a hardware platform, with its measurement functions defined by software. Existing virtual instruments typically use common interfaces such as USB, PCI, VXI, GPIB, and RS232 to connect to general-purpose computers (including smartphones, tablets, and PDAs) to form the hardware platform. These common interfaces are wired electrical connections to mechanical interfaces, which can lead to problems such as messy cables and easy wear and tear when frequent replacement of measurement hardware modules is required, affecting the convenience and reliability of its use. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a virtual measuring instrument that uses NFC data interaction and energy harvesting to improve the convenience and reliability of using virtual measuring instruments.

[0005] To address the aforementioned technical problems, this invention provides a virtual measuring instrument employing NFC data interaction and energy harvesting, comprising a sensing and processing module, a smart terminal, and a connection mechanism. The sensing and processing module includes at least a modular NFC antenna, an NFC processing unit, and a sensing and detection unit. The modular NFC antenna and the NFC processing unit are electrically connected to form an NFC wireless data interaction interface. The NFC processing unit has electromagnetic field energy harvesting and processing functions and wired interface data interaction functions. The power supply for the sensing and detection unit is provided by the electromagnetic field energy harvested by the modular NFC antenna through rectification and voltage regulation by the NFC processing unit. The measurement and control digital signals of the sensing and detection unit are exchanged via the wired interface of the NFC processing unit. The smart terminal is equipped with a terminal NFC antenna and has NFC wireless data interaction functions. The connection mechanism is used to form a mutual coupling inductor between the modular NFC antenna and the terminal NFC antenna. The smart terminal achieves power transmission and wireless data interaction with the sensing and processing module through electromagnetic induction coupling between the terminal NFC antenna and the modular NFC antenna.

[0006] Furthermore, the sensing and detection unit includes a sensor that converts physical quantities into digital signals.

[0007] Optionally, the sensing unit includes a microprocessor (MCU) configured to control data interaction between the sensor and the wired interface of the NFC processing unit.

[0008] Furthermore, the wired interface of the NFC processing unit adopts I... 2 C, SPI, UART, GPIO, 1-wire bus interface or one or more of them.

[0009] Optionally, the modular NFC antenna consists of a first module NFC antenna and a second module NFC antenna. The first module NFC antenna is used for electromagnetic field energy harvesting, and the second module NFC antenna is used for data interaction with the smart terminal.

[0010] Furthermore, the smart terminal is equipped with visualization processing software for the data collected by the sensors.

[0011] Optionally, the connection mechanism secures the module's NFC antenna to the vicinity of the terminal's NFC antenna via a detachable mechanical connection.

[0012] Optionally, the connection mechanism uses a magnetic connection to fix the module's NFC antenna near the terminal's NFC antenna.

[0013] Optionally, the sensing unit is electrically connected to the NFC processing unit in a detachable manner.

[0014] Furthermore, the smart terminal adopts one of the following: smartphone, tablet computer, or handheld computer (PDA).

[0015] Compared with the prior art, the present invention has the following technical advantages due to the adoption of the above technical solution: 1) The power transmission and wireless data interaction between the smart terminal and the sensing and detection processing module do not require direct contact electrical connection, avoiding connection wear and improving the reliability of the virtual measuring instrument hardware platform; 2) The relative positions of the fixed module NFC antenna and the terminal NFC antenna are connected in a detachable manner, which facilitates the disassembly of the sensing and detection processing module and the replacement of different sensing and detection processing modules, improving the convenience of using the measuring instrument; 3) Data acquisition and processing are performed using a smart terminal, and the same smart terminal can be configured with multiple sensing and detection processing modules with different functions, reducing the overall space occupied by the hardware device and improving the portability of the hardware platform. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a virtual measuring instrument configuration that uses NFC data interaction and energy harvesting.

[0017] Figure 2 This is a block diagram of the sensor detection and processing module.

[0018] Figure 3 This is a schematic diagram of a sensor detection module with dual NFC antennas.

[0019] Figure 4 This is a schematic diagram illustrating the working status of a virtual measuring instrument that uses NFC data interaction and energy harvesting.

[0020] Figure 5 This is a schematic diagram of a detachable mechanical connection mechanism.

[0021] Figure 6 This is a schematic diagram of a magnetic connection mechanism.

[0022] Figure 7 This is a schematic diagram of a sensing and detection processing module configuration that uses detachable sensor units. Detailed Implementation

[0023] In the following description, exemplary embodiments disclosed herein will be described in detail with reference to the accompanying drawings; however, identical or similar elements will be designated by the same reference numerals, and redundant descriptions will be omitted. Furthermore, in describing embodiments disclosed herein, detailed descriptions of related known technologies will be omitted where it is determined that such detailed descriptions might obscure the essential points of the embodiments disclosed herein.

[0024] Terms including serial numbers, such as first and second, can be used to describe various elements, but these elements are not limited by the terms, which are only used to distinguish one composition from another.

[0025] When a component is referred to as "connected" or "connected to" another component, it can be understood as being directly connected to or attached to another component, but other components may also exist in between. On the other hand, when a component is referred to as "directly connected" or "directly attached to" another component, it should be understood as having no other components in between.

[0026] Furthermore, the accompanying drawings are provided to facilitate understanding of the embodiments disclosed in this specification, and the technical concepts disclosed in this specification are not limited to the drawings. All modifications included in the spirit and scope of the invention should be understood to include equivalents or substitutes.

[0027] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, such as... Figure 1 As shown, a virtual measuring instrument employing NFC data interaction and energy harvesting according to the present invention includes a sensing and processing module 100, a smart terminal 200, and a connection mechanism 300.

[0028] The smart terminal 200 is equipped with a terminal NFC antenna section 201 containing an NFC coil, and has NFC wireless data interaction function. The smart terminal 200 can be a smartphone, tablet computer or handheld computer (PDA) with NFC function, and is equipped with NFC interface control software and visualization processing software for sensor data acquisition.

[0029] Figure 2 This is a circuit block diagram of an embodiment of the sensing and detection processing module 100. The sensing and detection processing module 100 circuit includes a module NFC antenna 110, an NFC processing unit 120, and a sensing and detection unit 130. The module NFC antenna 110 and the NFC processing unit 120 are electrically connected to form an NFC wireless data interaction interface. The NFC processing unit 120 has electromagnetic field energy harvesting and wired interface data interaction functions. The power supply 121 of the sensing and detection unit 130 is provided by the electromagnetic field energy harvested by the module NFC antenna 110 through rectification and voltage regulation by the NFC processing unit 120. The measurement and control digital signals of the sensing and detection unit 130 are used for data interaction through the wired interface 122 of the NFC processing unit 120. The wired interface 122 of the NFC processing unit 120 can adopt I... 2 C, SPI, UART, GPIO, 1-wire bus interface or one or more of them.

[0030] The sensor detection unit 130 includes various sensors 131 that convert physical quantities into digital signals. The sensors 131 typically employ integrated sensor devices, such as sensors that detect parameters like temperature, humidity, pressure, illuminance, field strength, and radiation. Alternatively, they can employ sensor components that convert physical quantities into digital outputs via an A / D converter or signal conditioner.

[0031] Figure 3 This is a schematic diagram of another embodiment of the sensing and detection processing module 100. The module NFC antenna includes a first module NFC antenna 110a and a second module NFC antenna 110b. The first module NFC antenna 110a is used for data interaction with the smart terminal. The second module NFC antenna 110b is used to assist in the collection of electromagnetic field energy. The collected electromagnetic field energy is rectified and regulated to serve as the power supply 121 for the sensor detection unit 130.

[0032] The sensing unit 130 includes a microprocessor (MCU) 132, which is connected between the wired interface 122 of the NFC processing unit 120 and the sensor 131, and is used to control the data interaction between the sensor 131 and the NFC processing unit 120.

[0033] A schematic diagram of the connection of a virtual measuring instrument using NFC data interaction and energy harvesting in both working and disassembled states is shown below. Figure 4 , Figure 5 The sensing and detection processing module 100 is fixed to the connecting mechanism 300 via the slide groove 301. The connecting mechanism 300 is clamped and fixed to the smart terminal 200 via the buckle 302, so that the module NFC antenna part 101 containing the NFC coil is fixed near the terminal NFC antenna part 201, thereby forming a mutual coupling inductance between the two NFC coils. The smart terminal 200 realizes power transmission and wireless data interaction with the sensing and detection processing module through the electromagnetic induction coupling between the terminal NFC antenna part 201 and the NFC coil of the module NFC antenna part 101.

[0034] The connecting mechanism 300 is provided with a slide 301 for connecting the sensor detection and processing module 100 and an elastic buckle 302 for connecting the smart terminal 200. The sensor detection and processing module 100 and the smart terminal 200 are separated and combined with the connecting mechanism 300 through the slide 301 and the buckle 302.

[0035] Figure 5 This is a specific embodiment of the connection using a sliding groove and snap-fit ​​method. The connection mechanism 300 can also use other commonly used mechanical connection methods, such as threads, clips, snaps, keyways, etc.

[0036] Figure 6 This is a schematic diagram of a magnetic connection mechanism. The connection mechanism consists of a magnetic material component 102 disposed on the surface of the sensor detection and processing module 100 and a magnetic material component 202 disposed on the surface of the smart terminal 200. At least one of the magnetic material components 102 and 202 is a hard magnetic material. When they are brought close together, they can magnetically attract and contact each other, thereby fixing the relative position of the sensor detection and processing module 100 and the smart terminal 200.

[0037] Figure 7This is a schematic diagram of the sensor detection and processing module 100 with a detachable sensor unit. To improve the flexibility of using virtual instruments, the sensor detection unit 130 is detachably connected to the NFC processing unit 120. The sensor detection unit 130 is electrically connected to the NFC processing unit 120 via a connecting cable 140 and a connector assembly 150. The connecting cable 140 can be a rigid or flexible cable to facilitate the movement and disassembly of the sensor detection unit 130.

[0038] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the scope of protection of the present invention.

Claims

1. A virtual measuring instrument employing NFC data interaction and energy harvesting, comprising a sensing and processing module, a smart terminal, and a connection mechanism, characterized in that: The sensing and detection processing module includes at least a module NFC antenna, an NFC processing unit, and a sensing and detection unit. The module NFC antenna and the NFC processing unit are electrically connected to form an NFC wireless data interaction interface. The NFC processing unit has electromagnetic field energy harvesting and processing functions and wired interface data interaction functions. The power supply of the sensing and detection unit is provided by the electromagnetic field energy collected by the module NFC antenna through rectification and voltage regulation by the NFC processing unit. The measurement and control digital signals of the sensing and detection unit are used for data interaction through the wired interface of the NFC processing unit. The smart terminal is equipped with a terminal NFC antenna and has NFC wireless data interaction functions. The connecting mechanism is configured to form a mutual coupling inductor between the module NFC antenna and the terminal NFC antenna. The smart terminal achieves power transmission and wireless data interaction with the sensing and detection processing module through electromagnetic induction coupling between the terminal NFC antenna and the module NFC antenna.

2. The virtual measuring instrument employing NFC data interaction and energy harvesting as described in claim 1, characterized in that, The sensing and detection unit includes a sensor that converts physical quantities into digital signals.

3. A virtual measuring instrument employing NFC data interaction and energy harvesting as described in claim 1, characterized in that, The sensing and detection unit includes a microprocessor configured to control data interaction between the sensor and the wired interface of the NFC processing unit.

4. A virtual measuring instrument employing NFC data interaction and energy harvesting as described in claim 1, characterized in that, The wired interface of the NFC processing unit adopts I... 2 C, SPI, UART, GPIO, 1-wire bus interface or one or more of them.

5. A virtual measuring instrument employing NFC data interaction and energy harvesting as described in claim 1, characterized in that, The module NFC antenna includes a first module NFC antenna and a second module NFC antenna. The first module NFC antenna is configured for electromagnetic field energy harvesting, and the second module NFC antenna is configured for data interaction with a smart terminal.

6. A virtual measuring instrument employing NFC data interaction and energy harvesting as described in claim 1, characterized in that, The smart terminal is equipped with data visualization processing software.

7. A virtual measuring instrument employing NFC data interaction and energy harvesting as described in claim 1, characterized in that, The connection mechanism secures the module's NFC antenna to the vicinity of the terminal's NFC antenna via a detachable mechanical connection.

8. A virtual measuring instrument employing NFC data interaction and energy harvesting as described in claim 1, characterized in that, The connection mechanism uses a magnetic connection method to fix the module's NFC antenna near the terminal's NFC antenna.

9. A virtual measuring instrument employing NFC data interaction and energy harvesting as described in claim 1, characterized in that, The sensing and detection unit is electrically connected to the NFC processing unit in a detachable manner.

10. A virtual measuring instrument employing NFC data interaction and energy harvesting as described in claim 1, characterized in that, The smart terminal can be one of a smartphone, tablet computer, or PDA.

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