Sensor signal shielding device, sensor, connecting device and processing device

Abstract

The embodiment of the utility model discloses a sensor signal shielding device, a sensor, a connecting device and a processing device, and relates to the technical field of sensors. The second signal shielding case is buckled with the first signal shielding case to form a shielding cavity; the connector is arranged in the shielding cavity and used for connecting the sensor cable and the sensor signal processing circuit board, the connector comprises a connector shielding layer, and the connector shielding layer is used for being connected with a sensor shielding layer of the sensor cable. According to the invention, interference signals of a plurality of transmission links can be shielded in sensor signal transmission, so that the shielding effect is improved.

Description

Technical Field

[0001] This application relates to the field of sensor technology, and in particular to a sensor signal shielding device, a sensor, a connecting device, and a processing device. Background Technology

[0002] In modern industrial and electronic equipment environments, a large number of electromagnetic signals exist. If sensor signals are not shielded, these external electromagnetic interferences may intrude into the sensor's signal lines, causing signal distortion, increased noise, and even causing the sensor to output incorrect information. Related technologies often aim to shield interference signals by adding a shielding layer to the sensor's cables, but the shielding effect is poor.

[0003] Application content

[0004] In view of this, one of the objectives of this application is to provide a sensor signal shielding device, a sensor, a sensor connection device, and a sensor signal processing device, which can achieve full shielding of sensor signals, thereby improving the shielding effect of sensor signals.

[0005] To achieve the above objectives, the technical solution of this application is implemented as follows:

[0006] In a first aspect, embodiments of this application provide a sensor signal shielding device, which includes:

[0007] First signal shielding cover;

[0008] The second signal shielding cover is fastened together with the first signal shielding cover to form a shielding cavity;

[0009] The connector, located inside the shielded cavity, is used to connect the sensor cable and the sensor signal processing circuit board. The connector includes a connector shielding layer, which is used to connect with the sensor shielding layer of the sensor cable.

[0010] In one possible implementation, the connector shielding layer is used to weld to the sensor shielding layer.

[0011] In one possible implementation, one end of the connector is provided with a plurality of connection pins, and the plurality of connection pins are insulated from the connector shielding layer.

[0012] In one possible implementation, the connector includes any one of a USB interface, an RJ-45 interface, and an RS-232 interface.

[0013] In one possible implementation, the sensor signal shielding device further includes:

[0014] Heat shrink tubing is fitted over the connection between the connector and the sensor cable. The heat shrink tubing shrinks when heated, thus securing the connector and the sensor cable.

[0015] In one possible implementation, the inner wall of the heat shrink tubing is pre-coated with a conductive adhesive layer, and the heat shrink tubing and the conductive adhesive layer shrink after heating, with the conductive adhesive layer bonding the connector shielding layer and the sensor shielding layer.

[0016] In one possible implementation, the sensor signal shielding device further includes:

[0017] The grounding terminal is located on the side of the first signal shield or the second signal shield near the connector shielding layer. The grounding terminal is electrically connected to the connector shielding layer through a conductive spring sheet.

[0018] Secondly, embodiments of this application provide a sensor, which includes:

[0019] Sensor body;

[0020] The first aspect provides a sensor signal shielding device.

[0021] Thirdly, embodiments of this application provide a sensor connection device, which includes:

[0022] Sensor cables;

[0023] The first aspect provides a sensor signal shielding device.

[0024] Fourthly, embodiments of this application provide a sensor signal processing apparatus, which includes:

[0025] The sensor provided in the second aspect;

[0026] A sensor signal processing circuit board is provided with a sensor signal processor, which is used to process the sensor signals generated by the sensor body.

[0027] or,

[0028] The sensor signal processing device includes:

[0029] The sensor connection device provided in the third aspect;

[0030] The sensor signal processing circuit board contains a sensor signal processor, which is used to process sensor signals transmitted via sensor cables.

[0031] The sensor signal shielding device provided in this application includes a first signal shielding cover, a second signal shielding cover, and a connector. The first and second signal shielding covers are fastened together to form a shielding cavity. The connector is disposed within the shielding cavity and can connect to a sensor cable and a sensor signal processing circuit board. The connector includes a connector shielding layer, which can be connected to the sensor shielding layer of the sensor cable. The shielding cavity in this application can shield interference signals at the connection point between the connector and the signal processing circuit board. The connector shielding layer is connected to the sensor shielding layer and can shield interference signals at the connection point between the connector and the sensor cable. Furthermore, the sensor cable itself has a sensor shielding layer, which can shield interference signals from multiple transmission stages during sensor signal transmission, thereby improving the shielding effect and the accuracy of the sensor signal. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. It should be understood that the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 This is a schematic diagram of the structure of a sensor signal shielding device provided in an embodiment of this application;

[0034] Figure 2 A wiring diagram provided for an embodiment of this application;

[0035] Figure 3 Another wiring diagram provided for an embodiment of this application;

[0036] Figure 4 This is yet another wiring diagram provided for an embodiment of this application.

[0037] Explanation of reference numerals in the attached figures:

[0038] Sensor signal shielding device 100;

[0039] First signal shield 110;

[0040] Second signal shield 120;

[0041] Connector 130;

[0042] Connector shielding layer 140;

[0043] 150 heat shrink tubing;

[0044] Sensor 200;

[0045] Sensor connection device 300;

[0046] Sensor shielding layer 310;

[0047] Sensor signal processing device 400;

[0048] Sensor signal processing circuit board 410;

[0049] Sensor signal processor 420;

[0050] USB female socket 430. Detailed Implementation

[0051] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0052] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0053] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0054] In various embodiments of this application, the expression "or" or "at least one of A and / or B" includes any combination or all combinations of the words listed simultaneously. For example, the expression "A or B" or "at least one of A and / or B" may include A, may include B, or may include both A and B.

[0055] In the description of this application, it should be noted that if the terms "upper", "lower", "inner", "outer", etc. appear to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the product of this application is usually placed in, it is only for the convenience of describing this application and simplifying the description, and does not 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 application.

[0056] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0057] It should be noted that, where there is no conflict, the features in the embodiments of this application can be combined with each other.

[0058] Furthermore, in the embodiments of this application, the term "connection" can refer to "electrical connection" or "direct connection." "Electrical connection" can refer to a direct electrical connection between two components, or it can refer to an electrical connection between two components via one or more normally open tubes or other components.

[0059] In modern industrial and electronic equipment environments, a large number of electromagnetic signals exist. If sensor signals are not shielded, these external electromagnetic interferences may intrude into the sensor's signal lines, causing signal distortion, increased noise, and even causing the sensor to output incorrect information. Related technologies often achieve sensor signal shielding by adding a shielding layer to the sensor's cables, but the shielding effect is poor.

[0060] Specifically, in addition to the electromagnetic interference signals mentioned above, external interference signals may also include electrostatic interference signals and low-frequency interference signals.

[0061] Electrostatic interference signals can superimpose additional noise onto the sensor signal, distorting parameters such as amplitude and frequency, leading to inaccurate measurement results. For example, in high-precision pressure sensors, electrostatic interference signals may cause deviations in the measured pressure value, affecting the judgment of the actual pressure. Furthermore, electrostatic discharge generates instantaneous high voltage and high current, which may exceed the withstand range of the sensor or other electronic components in the transmission line, causing permanent damage to the sensor or other electronic components.

[0062] Low-frequency interference signals, when their frequency is close to that of the sensor signal, are prone to aliasing and are difficult to eliminate through filtering or other methods, thus affecting the accuracy of the sensor signal. For example, in a temperature sensor, the presence of low-frequency interference signals may cause the temperature measurement value to fluctuate within a certain range, failing to accurately reflect the true temperature change.

[0063] To achieve complete shielding against interference signals and improve the shielding effect, this application provides a sensor signal shielding device, a sensor, a sensor connection device, and a sensor signal processing device. The sensor signal shielding device 100 will be described first.

[0064] Please see Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of a sensor signal shielding device provided in an embodiment of this application. Figure 2 A wiring diagram provided for an embodiment of this application shows that the sensor signal shielding device 100 includes:

[0065] First signal shield 110;

[0066] The second signal shielding cover 120 is fastened to the first signal shielding cover 110 to form a shielding cavity;

[0067] The connector 130 is disposed inside the shielding cavity and is used to connect the sensor cable and the sensor signal processing circuit board 410. The connector 130 includes a connector shielding layer 140, which is used to connect with the sensor shielding layer 310 of the sensor cable.

[0068] The sensor signal shielding device provided in this application includes a first signal shielding cover, a second signal shielding cover, and a connector. The first and second signal shielding covers are fastened together to form a shielding cavity. The connector is disposed within the shielding cavity and can connect to a sensor cable and a sensor signal processing circuit board. The connector includes a connector shielding layer, which can be connected to the sensor shielding layer of the sensor cable. The shielding cavity in this application can shield interference signals at the connection point between the connector and the signal processing circuit board. The connector shielding layer is connected to the sensor shielding layer and can shield interference signals at the connection point between the connector and the sensor cable. Furthermore, the sensor cable itself has a sensor shielding layer, which can shield interference signals from multiple transmission stages during sensor signal transmission, thereby improving the shielding effect and the accuracy of the sensor signal.

[0069] The aforementioned first signal shield 110 can partially enclose the connector 130. It should be noted that, in the partial enclosure of the connector 130 by the first signal shield 110, there is no exposed area on the partially enclosed side of the connector 130.

[0070] The second signal shield 120 also partially encloses the connector 130. Enclosed by the first signal shield 110 and the second signal shield 120, the connector 130, except for its two end interfaces, is completely enclosed within the shielding cavity formed by the first and second signal shields 110 and 120. Thus, when the connector 130 is connected to the external sensor signal processing circuit board 410, it can avoid electrostatic interference, preventing electrostatic interference with the sensor signal.

[0071] The first signal shield 110 and the second signal shield 120 mentioned above can be made of plastic, which can protect the connector 130 and also provide insulation.

[0072] In some embodiments, the first signal shield 110 includes a first fastening portion, and the second signal shield 120 includes a second fastening portion. The first fastening portion and the second fastening portion are fastened together to achieve the fastening of the first signal shield 110 and the second signal shield 120.

[0073] The first engaging part includes a groove, and the second engaging part includes a protrusion. The number of grooves and protrusions can be set according to actual needs.

[0074] In some embodiments, the number of grooves is the same as the number of protrusions. For example, the first fastening part includes four grooves, and the second fastening part includes four protrusions.

[0075] In some embodiments, the groove on the first signal shield 110 is positioned corresponding to the protrusion on the second signal shield 120, thereby achieving a tight fit.

[0076] In some embodiments, the protrusion corresponding to the groove can be replaced with an elastic hook. The elastic hook undergoes elastic deformation and engages with the groove when subjected to force, thereby achieving a tight connection between the first signal shield 110 and the second signal shield 120.

[0077] In some embodiments, the first signal shield 110 may include a second fastening portion, and the first signal shield 110 may include a first fastening portion. That is, the first fastening portion including a groove may be disposed on the first signal shield 110 or on the second signal shield 120, and the second fastening portion including a protrusion may be disposed on the first signal shield 110 or on the second signal shield 120.

[0078] Similarly, the aforementioned groove can be provided in either the first or the second fastening portion. The aforementioned protrusion can also be provided in either the first or the second fastening portion.

[0079] Considering that the sensor signal shielding device 100 can be applied to many scenarios, prolonged exposure to a humid environment may affect the normal operation of the sensor signal shielding device 100.

[0080] In some embodiments, a sealing ring or waterproof adhesive may be provided at the joint between the first signal shield 110 and the second signal shield 120, so that the sensor signal shielding device 100 can work stably even if it is in a humid environment for a long time.

[0081] The aforementioned connector 130 can connect to the sensor cable and the sensor signal processing circuit board 410, enabling the sensor signal to be transmitted to the sensor signal processing circuit board 410 for sensor signal processing.

[0082] The aforementioned sensor cable can be used to connect the sensor to the sensor signal shielding device 100. The sensor signal collected by the sensor can be transmitted to the sensor signal processing circuit board 410 via the sensor cable and the sensor signal shielding device 100.

[0083] In some embodiments, the sensor cable may use silver-plated copper or tin-plated copper conductors. Based on the characteristics of silver-plated copper or tin-plated copper, the sensor cable has low attenuation and excellent transmission performance when transmitting sensor signals, and can effectively transmit the weak electrical signals generated by the sensor, so as to make the transmitted sensor signals complete and accurate.

[0084] The aforementioned sensor signal processing circuit board 410 can process transmitted sensor signals and weak electrical signals generated by the sensor. This application does not limit the type of sensor signal processing circuit board 410.

[0085] The aforementioned connector shielding layer 140 forms multiple sides of the connector 130 and has the function of electromagnetic shielding.

[0086] In some embodiments, the connector shielding layer 140 may be made of a metal material with good conductivity and a certain degree of elasticity, such as iron or copper alloy. This embodiment does not make specific limitations.

[0087] The thickness of the connector shielding layer 140 in this application embodiment is not limited, and can be selected according to the actual situation, for example, 0.1 to 0.2 mm.

[0088] The aforementioned sensor shielding layer 310 can be wrapped around the sensor cable, which can isolate the signal wires inside the sensor cable from external electromagnetic interference, prevent external electromagnetic fields from interfering with the signal, and reduce the electromagnetic radiation of the internal signal of the sensor cable to the outside.

[0089] In some embodiments, the sensor shielding layer 310 may be made of a metallic material, such as copper, or aluminum.

[0090] The embodiments of this application do not specifically limit the form of the sensor shielding layer 310.

[0091] In some embodiments, the sensor shielding layer 310 can be wrapped around the sensor cable in the form of a metal braided mesh.

[0092] In some embodiments, the sensor shielding layer 310 can be wrapped around the sensor cable in the form of a metal foil.

[0093] The aforementioned connector shielding layer 140 is connected to the sensor shielding layer 310 of the sensor cable, which enables electromagnetic shielding at the connection point between the connector 130 and the sensor cable.

[0094] The connector 130 described above can be of various types, although for illustrative purposes only, the type shown is different. Figure 1 Type 130 connector Figure 1The connector 130 shown is a USB connector 130, or a USB male plug. However, it should be noted that the connector 130 protected by this application is not limited to USB connectors 130, but may also include other types of connectors 130.

[0095] In some embodiments, in addition to the USB type connector 130, the connector 130 may also include any one of an RJ-45 interface and an RS-232 interface.

[0096] The aforementioned USB connector 130 may include any of the following interfaces: USB-A, USB-B, USB-C, Mini-USB, and Micro-USB.

[0097] The RJ45 interface described above is a standardized interface used to connect Ethernet network devices. It is important to note that within the same network, all devices' RJ45 interface connections must adhere to the same wiring standard to ensure correct and stable data transmission.

[0098] The RS-232 interface described above is one of the commonly used serial communication interface standards, also known as the EIA RS-232 interface. The RS-232 interface has low transmission rate and distance, and its use of a single signal line and a single signal return line with a common ground connection makes it prone to common-mode interference and has weak noise immunity. The RS-232 interface is often used to collect data from sensors and actuators and transmit it to monitoring systems or central control units. It can also be used to send control commands, such as starting, stopping, or adjusting equipment parameters.

[0099] For example, if the connector 130 is RS-232 and connected to the central control system, the connector 130 can be connected to devices such as temperature sensors and air quality sensors, and can collect sensor signals in real time and send the real-time collected sensor signals to the central control system for processing.

[0100] In this embodiment, the sensor signal shielding device 100 includes a sensor shielding layer 310 on its external sensor cable, which can shield the sensor cable from electromagnetic interference signals and low-frequency interference signals. The connection between the connector shielding layer 140 and the sensor shielding layer 310 can shield the connection point between the connector 130 and the sensor cable from electromagnetic interference signals and low-frequency interference signals. The connector shielding layer 140, the first signal shielding cover 110, and the second signal shielding cover 120 of the connector 130 can shield the electrostatic interference signals between the connector 130 and the sensor signal processing circuit board 410. Thus, by employing the sensor signal shielding device 100 provided in this embodiment, through a fully shielded connection throughout the entire sensor signal transmission process, interference signals from multiple transmission stages can be fully shielded, thereby improving the shielding effect and the accuracy of the sensor signal.

[0101] Meanwhile, the sensor signal shielding device 100 provided in this application embodiment only includes a first signal shielding cover 110, a second signal shielding cover 120 and a connector 130, resulting in low shielding cost.

[0102] In one possible implementation, the connector shielding layer 140 is used to weld to the sensor shielding layer 310.

[0103] In this embodiment, the connector shielding layer 140 and the sensor shielding layer 310 are electrically connected by welding. In this way, a complete shielding layer is formed at the connection between the connector 130 and the sensor cable, which can shield electromagnetic interference signals and low-frequency interference signals at the connection between the connector 130 and the sensor cable.

[0104] In one possible implementation, one end of the connector 130 is provided with a plurality of connection pins, and the plurality of connection pins are insulated from the connector shielding layer 140.

[0105] In this embodiment, the connector shielding layer 140 is insulated from several connection pins at one end of the connector 130. This avoids interference to the sensor signal caused by the connector shielding layer 140 being energized, and reduces the probability of short-circuit faults.

[0106] The aforementioned connection pins can be used to connect sensor cables, and the number of connection pins can be set according to the type of sensor cable. This application does not specifically limit the number of connection pins. For example, if the sensor cable is a 4-core cable, four or more connection pins can be provided. As another example, if the sensor cable is a 3-core cable, three or more connection pins can be provided.

[0107] In one possible implementation, the sensor signal shielding device 100 further includes:

[0108] Heat shrink tubing 150 is fitted onto the connection between connector 130 and sensor cable. Heat shrink tubing 150 shrinks after heating and fixes connector 130 and sensor cable.

[0109] In this embodiment, the heat shrink tubing 150 not only secures the connector 130 and the sensor cable, but also improves the integration of the sensor cable and the connector 130, thereby enhancing the aesthetics of the sensor signal shielding device 100.

[0110] In some embodiments, the heat shrink tubing 150 may be a tubular product made of polymer materials such as polyolefins, fluoroplastics, or silicone rubber. The heat shrink tubing 150 has a large inner diameter under normal conditions and shrinks significantly longitudinally after heating, tightly wrapping the connector 130 and sensor cable that have been pre-placed within it.

[0111] The aforementioned polyolefins possess excellent insulation properties, wear resistance, and high flexibility. The aforementioned fluoroplastics exhibit high temperature resistance, corrosion resistance, and good insulation properties. The aforementioned silicone rubber possesses good flexibility, high temperature resistance, and aging resistance, making it suitable for applications requiring high temperatures and flexibility.

[0112] In some embodiments, the heat shrink tubing 150 is white.

[0113] In some embodiments, the heat shrink tubing 150 is marked with a designation that prevents errors during system assembly and facilitates identification during repairs.

[0114] In one possible implementation, the inner wall of the heat shrink tubing 150 is pre-coated with a conductive adhesive layer, and after heating, the heat shrink tubing 150 and the conductive adhesive layer shrink, and the conductive adhesive layer bonds the connector shielding layer 140 and the sensor shielding layer 310.

[0115] In this embodiment, the conductive adhesive layer enables a dual connection between the connector shielding layer 140 and the sensor shielding layer 310, which further enhances the shielding effect against interference signals and avoids the situation where the shielding effect against interference signals is poor due to unstable welding of the connector shielding layer 140 and the sensor shielding layer 310.

[0116] The aforementioned conductive adhesive layer can be made of polymer materials with good conductor properties, such as hot melt adhesives containing conductive media such as silver powder and copper powder.

[0117] In one possible implementation, the sensor signal shielding device 100 further includes:

[0118] A grounding terminal is disposed on the side of the first signal shield 110 or the second signal shield 120 near the connector shield 140. The grounding terminal is electrically connected to the connector shield 140 through a conductive spring sheet.

[0119] In this embodiment of the application, the grounding terminal provided on the first signal shield 110 or the second signal shield 120 can release static electricity, further enhance the shielding against electrostatic interference signals, and protect the sensor and other electronic components on the sensor signal transmission line.

[0120] This application embodiment also provides a sensor, the sensor 200 as follows: Figure 2 As shown, it includes:

[0121] Sensor body;

[0122] The sensor signal shielding device 100 provided in the foregoing embodiment.

[0123] The sensor 200 provided in this application embodiment can achieve the effect of the sensor signal shielding device 100 provided in the aforementioned embodiment, which will not be described in detail here.

[0124] The aforementioned sensor body is electrically connected to the sensor signal shielding device 100 via a sensor cable, and the wiring of the sensor body is the same as the wiring of the sensor 200.

[0125] The aforementioned sensor body may include any one of photoelectric sensors, magnetic sensors, capacitive sensors, inductive sensors, and resistive sensors.

[0126] This application embodiment also provides a sensor connection device 300, which, as shown in the embodiment, provides a sensor connection device 300. Figure 2 As shown, it includes:

[0127] Sensor cables;

[0128] The sensor signal shielding device 100 provided in the foregoing embodiment.

[0129] The sensor connection device 300 provided in this application embodiment can achieve the effect of the sensor signal shielding device 100 provided in the aforementioned embodiment, which will not be described in detail here.

[0130] The description of the sensor cable described above can be found in the foregoing embodiments, and will not be repeated here. The sensor cable includes, for example, the following: Figure 2 Right now Figure 3 The power and signal lines in the cable.

[0131] This application embodiment also provides a sensor signal processing device 400, which is as follows: Figure 2 As shown, it includes:

[0132] The sensor 200 provided in the foregoing embodiments;

[0133] The sensor signal processing circuit board 410 is provided with a sensor signal processor 420, which is used to process the sensor signals generated by the sensor body.

[0134] or,

[0135] The sensor signal processing device 400 includes:

[0136] The sensor connection device 300 provided in the foregoing embodiments;

[0137] The sensor signal processing circuit board 410 is equipped with a sensor signal processor 420, which is used to process sensor signals transmitted through the sensor cable.

[0138] The sensor signal processing device 400 provided in this application embodiment can achieve the effect of the sensor signal shielding device 100 provided in the aforementioned embodiment, which will not be described in detail here.

[0139] To better understand how the sensor signal shielding device 100 achieves full shielding of interference signals, the following explanation will be provided in the form of a wiring diagram, combining the sensor signal shielding device 100, sensor 200, sensor connection device 300, and sensor signal processing device 400.

[0140] like Figure 2 As shown, connector 130 is as follows Figure 1 The USB male connector shown has 4 connection pins, corresponding to... Figure 2 (1, 2, 3, 4 in the text), the sensor cable is a 4-core cable with a sensor shielding layer 310, and the sensor signal processing circuit board 410 has a sensor signal processor 420 (e.g., ...). Figure 2 The dashed frame in the sensor signal processing circuit board 410, and the 90° USB female socket 430, hereinafter referred to as USB female socket 430.

[0141] The sensor signal shielding device 100 is assembled from three standard components: a first signal shielding cover 110, a second signal shielding cover 120, and a USB male connector (corresponding to the aforementioned connector 130). During assembly, consistent wiring sequence is required during soldering. Specifically, the sensor shielding layer 310 is soldered to the shielding cover of the USB male connector (corresponding to the aforementioned connector shielding layer 140). After soldering, the white heat-shrink tubing 150 pre-applied to the sensor cable can be heated to secure the USB male connector and the sensor cable.

[0142] The sensor cable (4 cores) is soldered to the USB male connector, specifically, each core of the sensor cable is soldered to the connection pin of the USB male connector.

[0143] In some embodiments, each wire of the sensor cable can be set with a different color for easy differentiation.

[0144] For example, the power cord is red and black (e.g.) Figure 2 The signal lines (S- and S+) have two wires for two-way signal transmission, marked with white and green respectively (e.g., Red and Black); Figure 2 The symbols White and Green indicate this. P+, S+, S-, and P- are soldered to the four connection pins 1, 2, 3, and 4 of the USB male connector, respectively. After the sensor cable, USB male connector, sensor shielding layer 310, and connector shielding layer 140 are soldered, the soldered cable can be fixed with adhesive. Figure 2 In the diagram, P1 represents the solder joint between the sensor shielding layer 310 and the connector shielding layer 140. Another solder joint symmetrically distributed with P1 is not marked. P2 represents the solder joint or mounting point corresponding to the USB male plug and the USB female socket 430. Another solder joint symmetrically distributed with P2 is not marked.

[0145] In some embodiments, the 4-core cable with sensor shielding layer 310 described above may be integrated into the sensor 200.

[0146] The aforementioned connection between the sensor cable and the USB male connector is shielded by the soldering of the connector shielding layer 140 and the sensor shielding layer 310, which can shield interference signals such as electromagnetic interference signals and low-frequency interference signals at the connection between the sensor cable and the USB male connector.

[0147] For the sensor signal shielding device 100 with a USB male connector 130, the purchase cost of the three standard individual components is generally below ¥0.5. The heat shrink tubing 150 can be white for easy identification, and an ID can be printed on it at a cost as low as ¥0.1. The sensor signal processing circuit board 410 includes a standard integrated USB female connector 430 (90° angle), with a purchase cost below ¥0.5. Thus, the total material cost can be controlled below ¥2.0, resulting in low assembly costs.

[0148] For connections using a 3-core cable with a 310 sensor shield, please refer to [link / reference needed]. Figure 3 , Figure 3 This is yet another wiring diagram provided for an embodiment of this application.

[0149] exist Figure 3 In the middle, there is only one signal line (S), which is blue (corresponding to...). Figure 3(Blue in the text). For the rest of the description, please refer to [link / reference]. Figure 2 The details of that will not be repeated here.

[0150] Please see Figure 4 , Figure 4 This is another wiring diagram provided in the embodiments of this application. In this diagram, 1, 2, 3, and 4 correspond to the four connection pins described above. "Shield" refers to the shielding layer of the USB male connector (corresponding to the connector shielding layer 140). "Shell" refers to the first signal shielding cover 110 and the second signal shielding cover 120. S1 indicates the placement area of ​​the USB female connector 430, which mates with the USB male connector; the USB female connector 430 can be mounted on the sensor signal processing circuit board 410. S2 indicates the soldering area for soldering the sensor cable.

[0151] In all the examples shown and described above, any specific value should be interpreted as merely exemplary and not as a limitation; therefore, other examples of exemplary embodiments may have different values.

[0152] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0153] The embodiments described above are merely examples of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

[0154] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application.

Claims

1. A sensor signal shielding device, characterized by, The sensor signal shielding device includes: First signal shielding cover; The second signal shielding cover is fastened to the first signal shielding cover to form a shielding cavity; A connector, disposed within the shielding cavity, is used to connect the sensor cable and the sensor signal processing circuit board. The connector includes a connector shielding layer, which is used to connect with the sensor shielding layer of the sensor cable.

2. The sensor signal shielding device of claim 1, wherein, The connector shielding layer is used for welding to the sensor shielding layer.

3. The sensor signal shielding device of claim 1, wherein, One end of the connector is provided with a plurality of connection pins, and the plurality of connection pins are insulated from the shielding layer of the connector.

4. The sensor signal shielding device according to claim 1, characterized in that, The connector includes any one of the following interfaces: USB, RJ-45, and RS-232.

5. The sensor signal shielding device of claim 1, wherein, The sensor signal shielding device also includes: A heat shrink tubing is fitted over the connection between the connector and the sensor cable. The heat shrink tubing shrinks when heated, thus securing the connector and the sensor cable.

6. The sensor signal shielding device of claim 5, wherein, The inner wall of the heat shrink tubing is pre-coated with a conductive adhesive layer, and the heat shrink tubing and the conductive adhesive layer shrink after heating, with the conductive adhesive layer bonding the connector shielding layer and the sensor shielding layer.

7. The sensor signal shielding device of claim 1, wherein, The sensor signal shielding device also includes: A grounding terminal is disposed on the side of the first signal shield or the second signal shield near the connector shielding layer. The grounding terminal is electrically connected to the connector shielding layer through a conductive spring sheet.

8. A sensor, characterized by The sensor includes: Sensor body; The sensor signal shielding device according to any one of claims 1 to 7.

9. A sensor connection device, characterized by The sensor connection device includes: Sensor cables; The sensor signal shielding device according to any one of claims 1 to 7.

10. A sensor signal processing device, characterized by The sensor signal processing device includes: The sensor as described in claim 8; A sensor signal processing circuit board, wherein a sensor signal processor is provided on the sensor signal processing circuit board, and the sensor signal processor is used to process the sensor signal generated by the sensor body; or, The sensor signal processing device includes: The sensor connection device as described in claim 9; A sensor signal processing circuit board is provided, wherein a sensor signal processor is provided on the sensor signal processing circuit board, and the sensor signal processor is used to process the sensor signal transmitted through the sensor cable.

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