Measuring tool based on wireless module

Abstract

The utility model discloses a measuring tool based on a wireless module, which belongs to the field of wireless communication and comprises a measuring tool body. A wireless module is arranged on the side surface of the measuring tool body; the wireless module comprises a shell; a wireless module is arranged in the shell; a battery is arranged below the wireless module; the battery is electrically connected with the wireless module; a fastening buckle is arranged on the periphery of the wireless module; a fastening buckle is arranged on the periphery of the wireless module, and a metal spring ejector pin is arranged in the wireless module; the wireless module is connected with a mainboard circuit of the measuring tool through a metal spring ejector pin; and a switch is arranged above the shell and is electrically connected with the wireless module. The integrated design of the wireless module and the measuring tool greatly improves the flexibility of equipment use, and the use is more convenient; the wireless module circuit design further reduces the circuit volume occupation, and is convenient to adapt to a measuring tool.

Description

Technical Field

[0001] This utility model belongs to the field of wireless communication and relates to a measuring tool based on a wireless module. Background Technology

[0002] Currently, data transmission for measuring instruments typically employs wired connections, sending measurement data directly to the user's host computer. However, due to wiring limitations, this method is restricted to fixed locations and lacks flexibility. The wireless signal transmission commonly used by measuring instrument manufacturers, typically Bluetooth, cannot meet the secure wireless data transmission requirements of specific industrial environments. Currently, the wireless modules used in measuring instruments are usually externally wired, requiring an external wireless device box. This separate design is inconvenient for measurement operations and actually reduces testing efficiency. Therefore, how to achieve miniaturization and integration of the wireless module for measuring instruments while simultaneously ensuring secure wireless transmission is a pressing issue that needs to be addressed. Utility Model Content

[0003] To solve the above problems, the technical solution adopted by this utility model is: a measuring tool based on a wireless module, comprising: a measuring tool body;

[0004] A wireless module is provided on the side of the measuring instrument body;

[0005] The wireless module includes a housing;

[0006] A wireless module is installed inside the housing.

[0007] A battery is located below the wireless module;

[0008] The battery is electrically connected to the wireless module;

[0009] A fastening buckle is provided on the periphery of the wireless module;

[0010] A metal spring pin is installed inside a fastening buckle located on the periphery of the wireless module.

[0011] The wireless module is connected to the main circuit of the measuring instrument via a metal spring pin.

[0012] A switch is provided on the top of the housing, and the switch is electrically connected to the wireless module.

[0013] Furthermore, the wireless module adopts an integrated radio frequency transceiver chip based on BCWIASC2400.

[0014] Furthermore: the VCC pin of the BCWIASC2400 integrated RF transceiver chip is connected to one end of capacitor C2 and one end of the soft-start circuit; the other end of the soft-start circuit is connected to one end of the bidirectional trigger diode and the 3.3V power supply; the Led- and Led+ pins of the BCWIASC2400 integrated RF transceiver chip are connected to the two ends of the light-emitting diode; and the RST and VBAT pins of the BCWIASC2400 integrated RF transceiver chip are connected to the two ends of the switch.

[0015] Furthermore, the switch is a membrane switch, and an LED light is provided on the membrane switch.

[0016] Furthermore: the soft-start circuit includes a P-channel MOSFET, resistors R1 and R2, and capacitor C1; the source of the P-channel MOSFET is connected to the parallel resistors R1 and C1, the gate of the P-channel MOSFET is connected to one end of resistor R2, and the drain of the P-channel MOSFET is connected to one end of the VCC pin and capacitor C2.

[0017] Furthermore, the number of the metal spring pins is 4 or 5.

[0018] This invention provides a measuring tool based on a wireless module, upgrading the traditional wired signal data acquisition of measuring tools in a workshop to a wireless signal. Simultaneously, it employs the WIA-FA protocol to achieve secure wireless data transmission. Compared to commonly used wireless split-type devices with external wiring for measuring tools, this solution achieves integration and miniaturization with the measuring tool product, making operation and use more convenient.

[0019] The solution addresses the issue of secure wireless transmission of data acquired by the measuring instrument terminal, significantly enhancing the flexibility of equipment use and improving data acquisition efficiency. Its miniaturized, integrated design further enhances ease of use. By utilizing the existing battery compartment of the measuring instrument and elevating it, a built-in wireless RF chip circuit board is incorporated to achieve secure wireless transmission of data acquired by the measuring instrument terminal. This greatly improves the flexibility of equipment use and improves data acquisition efficiency, while the miniaturized, integrated design makes it even more convenient to use.

[0020] The integrated design of the miniaturized wireless module and measuring tool greatly enhances the flexibility of equipment use and makes it more convenient to use;

[0021] The wireless module circuit design further reduces the circuit size and facilitates compatibility with measuring tools. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of a measuring tool based on a wireless module;

[0024] Figure 2 This is a circuit diagram of the wireless module;

[0025] Figure 3 This is a schematic diagram showing the connection between the measuring instrument and the wireless module;

[0026] Figure 4 This is a schematic diagram of a wireless management system for measuring instruments based on wireless modules.

[0027] Reference numerals: 1. Measuring instrument body, 2. Housing, 3. Switch, 4. Wireless module, 5. Battery, 6. Fastening buckle, 7. Metal spring pin. Detailed Implementation

[0028] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and embodiments.

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this utility model or its application or use. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0030] Figure 1 This is a schematic diagram of a measuring tool based on a wireless module;

[0031] A measuring tool based on a wireless module includes: a measuring tool body 1;

[0032] A wireless module 4 is provided on the side of the measuring instrument body 1;

[0033] The wireless module 4 includes a housing 2; the housing 2 is cylindrical.

[0034] A wireless module 4 is installed inside the outer casing 2;

[0035] A battery 5 is disposed below the wireless module 4; the battery 5 is a button cell battery.

[0036] The battery 5 is electrically connected to the wireless module 4;

[0037] A fastening buckle 6 is provided on the periphery of the wireless module 4;

[0038] A metal spring pin 7 is provided inside a fastening buckle 6 located on the periphery of the wireless module 4.

[0039] The number of metal spring pins 7 is 4 or 5; the four pins of the measuring instrument body 1 are serial port TX\RX and power supply, ground, etc. If the measuring instrument requires a separate wake-up module, a wake-up pin is added.

[0040] The wireless module 4 is connected to the main circuit of the measuring instrument via a metal spring pin 7.

[0041] Metal spring pins 7 are welded as close as possible to the edge of the wireless module 4. A portion of the metal spring pins 7 protrudes to a suitable length from below the wireless module 4 through the through-hole in the housing 2. Each pin is aligned with the reserved contact position of the serial port of the measuring instrument motherboard installed below. After installation and tightening, the metal spring pins 7 are pressed tightly against the serial port contacts of the measuring instrument motherboard, connecting and enabling the transmission of serial port data signals.

[0042] A switch 3 is disposed on the top of the housing 2, and the switch 3 is electrically connected to the wireless module 4. The switch 3 is a membrane switch, and an LED light is disposed on the membrane switch.

[0043] When used on digital measuring instruments powered by button batteries, the battery compartment 5 of the measuring instrument body 1 is based on the original mounting cover fastening buckle 6 structure, increasing the space of the upper shell, and housing the button battery compartment for the wireless module 4 and the circular circuit board of the wireless module 4.

[0044] A membrane switch with an LED light embedded in the center of the housing 2 can be connected to the internal circuit board of the measuring instrument body 1 through the wiring hole of the housing 2. This switch 3 can realize the functions of restarting the wireless module 4 and displaying the status of the wireless module 4.

[0045] Figure 2 This is a circuit diagram of the wireless module;

[0046] Figure 3 This is a schematic diagram showing the connection between the measuring instrument and the wireless module;

[0047] The wireless module 4 uses an integrated radio frequency transceiver chip based on BCWIASC2400.

[0048] The VCC pin of the BCWIASC2400 integrated RF transceiver chip is connected to one end of capacitor C2 and one end of the soft-start circuit; the other end of the soft-start circuit is connected to one end of the bidirectional trigger diode and the 3.3V power supply; the Led- and Led+ pins of the BCWIASC2400 integrated RF transceiver chip are connected to the two ends of the light-emitting diode; and the RST and VBAT pins of the BCWIASC2400 integrated RF transceiver chip are connected to the two ends of switch 3.

[0049] The soft-start circuit includes a P-channel MOSFET Q1, resistors R1 and R2, and capacitor C1. It specifies which terminals of the P-channel MOSFET Q1 are connected to the parallel resistors R1 and C1, which terminal of the P-channel MOSFET Q1 is connected to one end of resistor R2, and which terminal of the P-channel MOSFET Q1 is connected to the VCC pin and one end of capacitor C2. The recommended model for Q1 is NTS2101PT1G, with R1=100kOhm, R2=1kOhm, and C1=4.7uF.

[0050] The pinout of the BCWIASC2400 integrated RF transceiver chip is shown in Table 1 below:

[0051] Table 1 Pinout of BCWIASC2400 Integrated RF Transceiver Chip

[0052]

[0053] Signal transmission with the measuring instrument is achieved through the serial port and wake-up function pin, enabling data transmission and sleep / wake-up functions. Wireless module 4 features low-power sleep mode, serial port data acquisition, and wireless data transmission / reception.

[0054] Figure 4 This is a schematic diagram of a wireless management system for measuring instruments based on wireless modules;

[0055] A wireless management system for measuring instruments based on wireless modules includes a host computer, a device management platform, a gateway, wireless access points, and n measuring instruments based on wireless modules 4.

[0056] The host computer, device management platform, gateway, and wireless access point are connected by a wire.

[0057] The wireless access point can wirelessly connect with n gauges based on the wireless module 4 to enable the transmission and reception of control commands and data.

[0058] The device management platform includes a network management module, which is responsible for WIA-FA network management;

[0059] The security management module is used for security management.

[0060] Among them, the network management function module is responsible for allocating a unique short address for each device and allocating resources such as channel time slots for WIA-FA device communication;

[0061] The security management module is responsible for key management (including key establishment and key updates) and authentication of all wireless modules 4 accessing the WIA-FA network. Measurement values ​​from measuring instruments can be wirelessly transmitted to the access point via the wireless module 4, and then forwarded to the user's host computer by the gateway, completing the data transmission.

[0062] After installing the button battery, the membrane switch flashes once to indicate normal power-on. Wireless module 4 initiates an authentication request to the device management platform. After the platform authenticates wireless module 4, it sends an authentication message to wireless module 4. Wireless module 4 then performs reverse authentication with the management platform. Once authentication is successful, the two-way authentication process is complete, and the module can access the WIA-FA network normally. The module then enters a low-power sleep state, waiting for the measuring instrument body 1 to send data to wake it up.

[0063] After wireless module 4 is installed on the measuring instrument, the instrument collects measurement data and sends it to the serial port. If wireless module 4 is in sleep mode, it will immediately wake up, receive the collected data via the serial port, assemble and encrypt it, and send a secure wireless signal to the wireless access point. The wireless access point decrypts the wireless data and sends the actual data information to the gateway. The gateway forwards the data to the designated host computer user port to complete the data transmission.

[0064] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model 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 or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A measuring tool based on a wireless module, characterized in that: include: Measuring instrument body; A wireless module is provided on the side of the measuring instrument body; The wireless module includes a housing; A wireless module is installed inside the housing. A battery is located below the wireless module; The battery is electrically connected to the wireless module; A fastening buckle is provided on the periphery of the wireless module; A metal spring pin is installed inside a fastening buckle located on the periphery of the wireless module. The wireless module is connected to the main circuit of the measuring instrument via a metal spring pin. A switch is provided on the top of the housing, and the switch is electrically connected to the wireless module.

2. The measuring tool based on a wireless module according to claim 1, characterized in that: The wireless module uses an integrated RF transceiver chip based on BCWIASC2400.

3. A measuring tool based on a wireless module according to claim 2, characterized in that: The VCC pin of the BCWIASC2400 integrated RF transceiver chip is connected to one end of capacitor C2 and one end of the soft-start circuit; the other end of the soft-start circuit is connected to one end of the bidirectional trigger diode and the 3.3V power supply; the Led- and Led+ pins of the BCWIASC2400 integrated RF transceiver chip are connected to the two ends of the light-emitting diode; and the RST and VBAT pins of the BCWIASC2400 integrated RF transceiver chip are connected to the two ends of the switch.

4. A measuring tool based on a wireless module according to claim 1, characterized in that: The switch is a membrane switch, and an LED light is provided on the membrane switch.

5. A measuring tool based on a wireless module according to claim 3, characterized in that: The soft-start circuit includes a P-channel MOSFET, resistors R1 and R2, and capacitor C1. The source of the P-channel MOSFET is connected to the parallel resistors R1 and C1, the gate of the P-channel MOSFET is connected to one end of resistor R2, and the drain of the P-channel MOSFET is connected to one end of the VCC pin and capacitor C2.

6. A measuring tool based on a wireless module according to claim 1, characterized in that: The number of metal spring pins is 4 or 5.

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