A multi-dimensional force digital sensor

Abstract

The utility model discloses a kind of multi-dimensional force digital sensors, including metal elastomer, strain gauge, bridge path PCB, signal amplification digitization processing PCB, the metal elastomer includes elastomer, upper end cap and lower end cap, the strain gauge is set on the strain beam arm of elastomer, the bridge path PCB, signal amplification digitization processing PCB are installed in the inside of elastomer, the output end of the strain gauge is electrically connected with the input end of bridge path PCB, the output end of bridge path PCB is electrically connected with the input end of signal amplification digitization processing PCB, the upper end cap, lower end cap sealing cover are combined on the upper end surface and lower end surface of elastomer.The utility model uses multiple double-sided pin connection bridge path PCB and signal amplification digitization processing PCB in sensor interior, both as the transmission path of analog signal, reduce cable and connector use, realize sensor miniaturization and improve the ability of anti-electromagnetic interference.

Description

Technical Field

[0001] This utility model belongs to the field of sensor technology, specifically relating to a multi-dimensional force digital sensor. Background Technology

[0002] With the development of industrial automation technology, many devices require sensors to measure and monitor pressure, temperature, distance, and other parameters in real time. The output signals of these sensors need to be processed by electronic components for noise reduction, amplification, and digitization. Multi-dimensional force sensors, due to their complex internal structure and limited space for electronic components, require processing multiple signals and meeting the requirements for vibration and electronic interference resistance, placing high demands on the design of their electronic components.

[0003] In existing technologies, multi-dimensional force digital sensors require electronic components to process signals and output digital values. These electronic components generally consist of two parts: a bridge circuit PCB for connecting the bridge circuit and strain gauges, and an amplifier and signal processing circuit PCB, either housed inside the sensor or as an external electronic component module. Currently, analog signals from the multi-dimensional force sensor are transmitted to the electronic components for processing via wiring harnesses. Before processing, the sensor signals on the cables are weak and easily interfered with, and the longer the cable, the more susceptible it is to interference. Multi-dimensional force sensors require processing multiple signals, necessitating numerous cables and larger connectors, making it difficult to integrate them into the sensor. This often results in increased sensor size and cost, hindering the miniaturization requirements of the sensor. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a multidimensional force digital sensor.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0006] This utility model provides a multi-dimensional force digital sensor, including a metallic elastomer, a strain gauge, a bridge circuit PCB, and a signal amplification and digital processing PCB. The metallic elastomer includes an elastomer body, an upper end cover, and a lower end cover. The strain gauge is disposed on the strain beam arm of the elastomer. The bridge circuit PCB and the signal amplification and digital processing PCB are installed inside the elastomer. The output end of the strain gauge is electrically connected to the input end of the bridge circuit PCB, and the output end of the bridge circuit PCB is electrically connected to the input end of the signal amplification and digital processing PCB. The upper end cover and the lower end cover are sealed to the upper and lower end surfaces of the elastomer.

[0007] Preferably, a strain beam arm is provided on any axial end face of the elastic body, and the strain gauge is disposed on the strain beam arm.

[0008] Preferably, the bridge circuit PCB is a circular plate structure, and the bridge circuit PCB has at least one wiring groove evenly provided in its circumference. The bridge circuit PCB has bridge insertion holes at both ends of the wiring groove opening, and the bridge circuit PCB has wiring terminals at positions near the wiring groove. The axis of the bridge circuit PCB is mounted on an elastic body through connecting studs.

[0009] Preferably, the signal amplification and digitization processing PCB is a circular plate structure, and the signal amplification and digitization processing PCB is provided with pads and traces for connecting strain gauges to form a bridge circuit.

[0010] Preferably, a signal amplification socket is provided on the signal amplification and digitization processing PCB at a position corresponding to the bridge socket, and the bridge socket and the signal amplification socket are electrically connected by bidirectional pins.

[0011] Preferably, the bridge PCB and the signal amplification and digital processing PCB are soldered together via bidirectional pins, so that the bridge PCB and the signal amplification and digital processing PCB form a whole.

[0012] Preferably, a gasket is provided between the bridge PCB and the signal amplification and digital processing PCB.

[0013] Compared with the prior art, this utility model has the following advantages:

[0014] This invention employs multiple double-sided pins inside the sensor to connect the bridge circuit PCB and the signal amplification and digital processing PCB. This serves as both a transmission path for analog signals and reduces the use of cables and connectors, thereby miniaturizing the sensor and improving its resistance to electromagnetic interference. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the elastomer and strain gauge in this utility model;

[0016] Figure 2 This is a schematic diagram of the PCB structure of the bridge circuit in this utility model;

[0017] Figure 3 This is a schematic diagram of the signal amplification and digital processing PCB in this utility model;

[0018] Figure 4 This is a schematic diagram of the structure of the bridge circuit PCB and the signal amplification and digital processing PCB assembled in this utility model. Detailed Implementation

[0019] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0020] In the description of this utility model, it should be understood that the terms "upper," "lower," "left," "right," etc., indicating the orientation or positional relationship are all based on the accompanying drawings. Figure 1 The orientations or positional relationships shown are for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] Example 1

[0023] like Figures 1 to 4 As shown, this embodiment provides a multi-dimensional force digital sensor, including a metal elastomer 1, a strain gauge 2, a bridge circuit PCB 3, and a signal amplification and digital processing PCB 4. The metal elastomer 1 includes an elastomer, an upper end cover, and a lower end cover. The strain gauge 2 is disposed on the strain beam arm of the elastomer. The bridge circuit PCB 3 and the signal amplification and digital processing PCB 4 are installed inside the elastomer. The output end of the strain gauge 2 is electrically connected to the input end of the bridge circuit PCB 3, and the output end of the bridge circuit PCB 3 is electrically connected to the input end of the signal amplification and digital processing PCB 4. The upper end cover and the lower end cover are sealed to the upper and lower end surfaces of the elastomer.

[0024] In this embodiment, a strain beam arm is provided on the lower axial end face of the elastic body 1, and the strain gauge 2 is disposed on the strain beam arm.

[0025] In this embodiment, the bridge circuit PCB3 is a circular plate structure. The bridge circuit PCB3 has four wiring grooves 31 evenly arranged in its circumference. The bridge circuit PCB3 has bridge circuit insertion holes 32 at both ends of the wiring groove openings. The bridge circuit PCB3 has wiring terminals 33 located near the wiring grooves 31. The axis of the bridge circuit PCB3 is mounted on the elastic body through connecting studs.

[0026] In this embodiment, the signal amplification and digitization processing PCB4 is a circular plate structure. The signal amplification and digitization processing PCB4 is provided with pads and traces for connecting strain gauges to form a bridge circuit.

[0027] In this embodiment, a signal amplification socket 41 is provided on the signal amplification and digitization processing PCB4 at a position corresponding to the bridge socket 32. The bridge socket 32 ​​and the signal amplification socket 41 are electrically connected by bidirectional pins. The bridge PCB3 and the signal amplification and digitization processing PCB4 are soldered together by bidirectional pins, so that the bridge PCB3 and the signal amplification and digitization processing PCB4 form a whole.

[0028] In this embodiment, a gasket is also provided between the bridge PCB3 and the signal amplification and digitization processing PCB4.

[0029] The working principle of this embodiment will be further explained below:

[0030] Double-sided pins are used to connect the bridge circuit PCB and the signal amplification and digital processing PCB into one unit. The middle of the bridge circuit PCB is fixed to the elastomer by connecting studs. The bridge circuit PCB and the signal amplification and digital processing PCB are fixed together by spacers. Then, the upper and lower end caps are sealed and closed on the upper and lower end faces of the elastomer.

[0031] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A multidimensional force digital sensor, characterized in that, The system includes a metal elastomer, a strain gauge (2), a bridge circuit PCB (3), and a signal amplification and digital processing PCB (4). The metal elastomer includes an elastomer (1), an upper end cover, and a lower end cover. The strain gauge (2) is disposed on the strain beam arm (11) of the elastomer. The bridge circuit PCB (3) and the signal amplification and digital processing PCB (4) are installed inside the elastomer (1). The output end of the strain gauge (2) is electrically connected to the input end of the bridge circuit PCB (3). The output end of the bridge circuit PCB (3) is electrically connected to the input end of the signal amplification and digital processing PCB (4). The upper end cover and the lower end cover are sealed and closed on the upper and lower end surfaces of the elastomer (1).

2. The multidimensional force digital sensor according to claim 1, characterized in that, The elastic body is a hollow cylindrical structure. A strain beam arm (11) is provided on any axial end face of the elastic body (1), and the strain gauge (2) is disposed on the strain beam arm (11).

3. The multidimensional force digital sensor according to claim 2, characterized in that, The bridge circuit PCB (3) is a circular plate structure. The bridge circuit PCB (3) has at least one wiring groove (31) evenly provided in its circumference. The bridge circuit PCB (3) has bridge circuit sockets (32) at both ends of the wiring groove opening. The bridge circuit PCB (3) has wiring terminals (33) at positions close to the wiring groove (31). The axis of the bridge circuit PCB (3) is mounted on the elastic body through connecting studs.

4. The multidimensional force digital sensor according to claim 3, characterized in that, The signal amplification and digitization processing PCB (4) is a circular plate structure. The signal amplification and digitization processing PCB (4) is provided with pads and traces for connecting strain gauges to form a bridge circuit.

5. The multidimensional force digital sensor according to claim 4, characterized in that, The signal amplification jack (41) is provided on the signal amplification digitization processing PCB (4) at a position corresponding to the bridge jack (32). The bridge jack (32) and the signal amplification jack (41) are electrically connected by bidirectional pins.

6. The multidimensional force digital sensor according to claim 5, characterized in that, The bridge circuit PCB (3) and the signal amplification and digital processing PCB (4) are soldered together by bidirectional pins, so that the bridge circuit PCB (3) and the signal amplification and digital processing PCB (4) form a whole.

7. The multidimensional force digital sensor according to claim 6, characterized in that, A gasket is also provided between the bridge circuit PCB (3) and the signal amplification and digitization processing PCB (4).

Images