A connector with force measurement and data wireless transmission functions

Abstract

The present invention discloses a connector with force measurement and data wireless transmission functions, comprising a connector body formed by a first shell and a second shell fixedly connected by threads, a first connector, a second connector, and a force measuring unit, wherein the connector body has a cavity inside; the force measuring unit includes a force acquisition circuit and a stress strain gauge, the stress strain gauge is adhered to the inner wall of the connector body and is electrically connected to the force acquisition circuit; the force acquisition circuit, the conversion and transmission circuit, and a power supply module connected to and powered by the force acquisition circuit and the conversion and transmission circuit are all arranged inside the cavity. The connector of the present invention can not only measure the pressure applied to the connector, but also transmit the measured data wirelessly over long distances; when the data receiving device is too far away, a connector can be added at a suitable position between the connector and the data receiving device to serve as a signal relay.

Description

Technical Field

[0001] The present invention belongs to the technical field of connectors, and in particular relates to a connector with force measurement and data wireless transmission functions. Background Art

[0002] During the construction of ultra-high and extra-high voltage (EHV) transmission lines, the traction rope is the primary force-bearing tool used for tension payout. In recent years, the traction rope has repeatedly broken on the traction sheave during tension payout, posing a significant safety hazard. The traction rope is subject to multiple factors as it passes over the traction sheave, making theoretical force analysis complex and the degree of influence of each factor difficult to determine. Most existing connectors only provide connection and bending resistance, lacking force measurement and wireless transmission capabilities. The Chinese invention patent specification with publication number CN104330203B discloses a pressure force measuring connector. Although the connector can measure pressure, the measured data cannot be transmitted over long distances. When the data receiving device is far away, there is a problem of not receiving data. Moreover, in order to withstand large pressures, the internal tension sensor is relatively large, resulting in the cylindrical shell and the entire connector being too large to pass through the wheel groove of the wire-paying pulley. It is inconvenient to use during the tension wire-paying process and can only be fixed in one position for use. In addition, when in use, the device requires the first connector, the second connector, the upper ball joint, the tension sensor, the connecting shaft, the lower shell, the lower ball joint, the linear guide and other components to work together. The structure is relatively complex and easily damaged during use. When one of the components has a problem, the pressure measurement accuracy will be reduced and the reliability is poor. Summary of the Invention

[0003] The purpose of the present invention is to provide a connector with force measurement and data wireless transmission functions, thereby solving the problems of existing force measuring connectors that measurement data cannot be transmitted over long distances, have a complex structure, and have poor reliability.

[0004] The technical solutions of the present invention are as follows:

[0005] The present invention discloses a connector with force measurement and data wireless transmission functions, comprising a connector body formed by a first shell and a second shell fixedly connected by threads, a force measuring unit, and a first connector and a second connector respectively arranged at both ends of the connector body, wherein the connector body has a cavity inside, the first connector is fixedly connected to the first shell, and the second connector is fixedly connected to the second shell; the force measuring unit comprises a force value acquisition circuit and a stress strain gauge, which is adhered to the inner wall of the connector body and electrically connected to the force value acquisition circuit; the force measuring unit also comprises a conversion and transmission circuit electrically connected to the force value acquisition circuit and used for wirelessly transmitting the data collected by the force value acquisition circuit, and a power supply module connected to the force value acquisition circuit and the conversion and transmission circuit and supplying power to them, and the force value acquisition circuit, the conversion and transmission circuit and the power supply are all arranged inside the cavity.

[0006] Furthermore, a pair of pin holes are respectively provided on the first connector and the second connector, a pin shaft is provided in the pin hole, and a shaft sleeve is also provided on the pin shaft.

[0007] Furthermore, the shape of the internal cavity of the connector body is cylindrical, the shape of the first connector and the second connector is U-shaped, and the pin holes are opened on the two arms of the first connector and the second connector; the first connector and the first shell are integrally formed, and the second connector and the second shell are integrally formed.

[0008] Furthermore, the conversion and transmission circuit includes a level interface conversion module, a communication parameter conversion module and a wireless radio frequency communication module, wherein the signal output end of the force value acquisition circuit is connected to the input end of the level interface conversion module, the output end of the level interface conversion module is connected to the input end of the communication parameter conversion module, and the output end of the communication parameter conversion module is connected to the input end of the wireless radio frequency communication module.

[0009] Furthermore, the power module includes a lithium battery pack and a power management module electrically connected thereto, and the lithium battery pack supplies power to the force value acquisition circuit, the level interface conversion module, the communication parameter conversion module and the wireless radio frequency communication module through the power management module.

[0010] Furthermore, it also includes an anti-surge and anti-static protection module, which is arranged at the connection between different modules.

[0011] Furthermore, the force value acquisition circuit is a force value collector, the level interface conversion module includes a TTL level to 485 communication module and a TTL level to USB module; the communication parameter conversion module adopts a single-chip microcomputer; the wireless radio frequency communication module adopts a wireless radio frequency chip; and the power management module adopts a multi-functional power management SOC chip.

[0012] Furthermore, the model of the force value collector is R5498; the model of the multifunctional power management SOC chip is IP5306; and the anti-surge and anti-static protection module adopts the anti-surge and anti-static protection chip for communication and power supply, model LC05C.

[0013] Furthermore, the connector body, the first connector and the second connector are made of 42CrMo alloy steel or 0Cr17Ni4Cu4Nb stainless steel.

[0014] The beneficial effects of the present invention are:

[0015] The connector of the present invention can not only measure the pressure on the connector, but also transmit the measured data wirelessly over long distances. When the data receiving device is too far away, a connector can be added at a suitable position between the connector and the data receiving device to serve as a signal relay. In addition, the connector is subjected to tensile force by the shell, and the shell only needs to be made of a material with good tensile performance. The overall outer diameter of the connector is small, and it can pass through the wheel groove of the wire-paying pulley, so it can be used while moving, and is more convenient to use during the tension wire-paying process.

[0016] By providing the pin shaft and the bushing, the connection of the cables is facilitated and friction can be reduced.

[0017] By using alloy steel as the material of the connector, the connector has bending resistance and is durable.

[0018] The mechanical structure of the present invention is simple. When in use, the force applied to the connector is mainly measured by the interaction between the connector body, the first connector, the second connector and the stress strain gauge, and the reliability is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the present invention;

[0020] Figure 2 for Figure 1 AA section view;

[0021] Figure 3 Schematic diagram of the structure of the working circuit of the present invention. DETAILED DESCRIPTION

[0022] like Figures 1 to 3As shown, the present invention discloses a connector with force measurement and wireless data transmission functions, comprising a first housing 2, a second housing 3, a first connector 1, a second connector 4, a stress and strain gauge 9, a force acquisition circuit, a conversion and transmission circuit, and a power module 7. The connector body is composed of a first housing and a second housing fixedly connected by threads, and has a cavity 10 inside. Cavity 10 is cylindrical in shape. The first connector and the first housing are integrally formed, and the second connector and the second housing are integrally formed. The stress and strain gauge 9 is adhered to the inner wall of the connector body and electrically connected to the force acquisition circuit. The force acquisition circuit and the conversion and transmission circuit are integrated on a circuit board 8 and fixedly mounted within the cavity 10. The power module 7 is also fixedly mounted within the cavity 10. The first and second connectors are U-shaped, with a pair of pin holes formed on each arm of the first and second connectors. A pin shaft 5 is disposed within the pin hole, and a shaft sleeve 6 is also disposed on the pin shaft. This facilitates cable connection and reduces friction. The connector body, first connector, and second connector are constructed from 42CrMo alloy steel, 0Cr17Ni4Cu4Nb stainless steel, or other materials with sufficient tensile strength and elastic deformation to meet the requirements of a load cell. Using alloy steel as the connector ensures bending resistance and durability.

[0023] The conversion and transmission circuit includes a level interface conversion module, a communication parameter conversion module, and a wireless RF communication module. The signal output of the force acquisition circuit is connected to the input of the level interface conversion module, the output of the level interface conversion module is connected to the input of the communication parameter conversion module, and the output of the communication parameter conversion module is connected to the input of the wireless RF communication module. By providing the level interface conversion module and the communication parameter conversion module, the format and protocol of the data output by the force acquisition circuit are converted so that it can be wirelessly transmitted via the wireless RF communication module. The power module includes a lithium battery pack and a power management module electrically connected thereto. The output of the lithium battery pack is connected to the input of the power management module, and the output of the power management module is respectively connected to the force acquisition circuit, the level interface conversion module, the communication parameter conversion module, and the wireless RF communication module to provide power. An anti-surge and anti-static protection module (not shown) is also provided at the connection between the different modules. The force value acquisition circuit can use the force value collector model R5498; the level interface conversion module includes a TTL level to 485 communication module and a TTL level to USB module; the communication parameter conversion module uses a single-chip microcomputer; the wireless radio frequency communication module uses a wireless radio frequency chip model LLCC68; the power management module uses a multi-function power management SOC chip model IP5306; the anti-surge and anti-static protection module uses a communication and power anti-surge and anti-static protection chip model LC05C.

[0024] The working principle of the present invention is: first, different cable ends are fixed on the shaft sleeves of the first connector and the second connector respectively. Under the tension of the cable, the connector body will undergo elastic deformation, and the strain gauge will deform accordingly. The force value collector collects the pressure data it is subjected to and converts the data format and protocol through the level interface conversion module and the communication parameter control module, and then transmits it to the wireless radio frequency communication module, which transmits it to the data receiving device.

[0025] The connector of the present invention can not only measure the pressure exerted on the connector, but also transmit the measured data wirelessly over long distances; when the data receiving device is too far away, a connector can be added at a suitable position between the connector and the data receiving device to act as a signal relay; and the mechanical structure of the present invention is simple. When in use, the force exerted on the connector is mainly measured by the interaction between the connector body, the first connector, the second connector and the stress strain gauge, and the reliability is high; in addition, the connector is subjected to tensile force by the shell, and the shell only needs to be made of a material with good tensile performance. The overall outer diameter of the connector is small, and it can pass through the wheel groove of the wire-releasing pulley and can be used in motion, which is more convenient to use during tension wire-releasing.

[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents, and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A connector with force measurement and wireless data transmission functions, comprising a connector body formed by a first shell and a second shell fixedly connected by threads, a first connector and a second connector respectively provided at two ends of the connector body, and a force measuring unit, characterized in that: The connector body has a cavity inside, the first connector is fixedly connected to the first shell, and the second connector is fixedly connected to the second shell; the force measuring unit includes a force value acquisition circuit and a stress strain gauge, the stress strain gauge is pasted on the inner wall of the connector body and is electrically connected to the force value acquisition circuit; it also includes a conversion and transmission circuit electrically connected to the force value acquisition circuit and used to wirelessly transmit the data collected by it, and a power supply module connected to the force value acquisition circuit and the conversion and transmission circuit and powering them. The force value acquisition circuit, the conversion and transmission circuit and the power supply are all arranged inside the cavity, and a pair of pin holes are respectively opened on the first connector and the second connector, and a pin shaft is arranged in the pin hole, and a shaft sleeve is also provided on the pin shaft. The shaft sleeves of the first connector and the second connector are used to fix different cable ends respectively.

2. The connector with force measurement and data wireless transmission functions according to claim 1, wherein: The shape of the internal cavity of the connector body is cylindrical, the shape of the first connector and the second connector is U-shaped, and the pin holes are opened on the two arms of the first connector and the second connector; the first connector and the first shell are integrally formed, and the second connector and the second shell are integrally formed.

3. The connector with force measurement and data wireless transmission functions according to claim 1, wherein: The conversion and transmission circuit includes a level interface conversion module, a communication parameter conversion module and a wireless radio frequency communication module, wherein the signal output end of the force value acquisition circuit is connected to the input end of the level interface conversion module, the output end of the level interface conversion module is connected to the input end of the communication parameter conversion module, and the output end of the communication parameter conversion module is connected to the input end of the wireless radio frequency communication module.

4. The connector with force measurement and data wireless transmission functions according to claim 3, wherein: The power module includes a lithium battery pack and a power management module electrically connected thereto. The lithium battery pack supplies power to the force value acquisition circuit, the level interface conversion module, the communication parameter conversion module and the wireless radio frequency communication module through the power management module.

5. The connector with force measurement and data wireless transmission functions according to claim 4, characterized in that: It also includes an anti-surge and anti-static protection module, which is arranged at the connection between different modules.

6. The connector with force measurement and data wireless transmission functions according to claim 5, wherein: The force value acquisition circuit is a force value collector, the level interface conversion module includes a TTL level to 485 communication module and a TTL level to USB module; the communication parameter conversion module adopts a single chip microcomputer; The wireless radio frequency communication module adopts a wireless radio frequency chip; The power management module adopts a multifunctional power management SOC chip.

7. The connector with force measurement and data wireless transmission functions according to claim 6, wherein: The model of the force value collector is R5498; the model of the multifunctional power management SOC chip is IP5306; the anti-surge and anti-static protection module adopts the anti-surge and anti-static protection chip for communication and power supply, model LC05C.

8. The connector with force measurement and data wireless transmission functions according to claim 1, wherein: The connector body, the first connector, and the second connector are made of 42CrMo alloy steel or 0Cr17Ni4Cu4Nb stainless steel.

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