Current detector

Abstract

The present application relates to a current detector in which a plurality of first terminals included in a first contact member and a plurality of second terminals included in a second contact member are arranged in a predetermined manner, and the terminals of the first contact member and the second contact member, which are in contact with each other, correspond to signals of the same type, so that an instrument body and a connection part can correctly transmit signals. Therefore, a user does not need to consider forward insertion or reverse insertion in the process of inserting the instrument body of the current detector and the connecting part. According to the current detector, a traditional one-way plug-in mode is broken, plug-in can be carried out on the front face and the back face of the instrument body and the front face and the back face of the connecting part, and the operation process of a user is greatly simplified. A user does not need to consider the positive and negative insertion corresponding relation between the connecting part and the instrument body during use, and clamping connection can be easily completed, so that the user experience is greatly improved. Meanwhile, the design thoroughly solves the problem of wire insertion, effectively avoids equipment damage caused by wrong insertion or mistakes, and brings higher safety and convenience to users.

Description

Technical Field

[0001] The present application relates to the technical field of electronic equipment and power systems, and in particular to a current detector. Background Art

[0002] In electronic equipment and power systems, current detectors are an indispensable device used to monitor the current conditions in the circuit in real time to ensure the stable operation of the system and prevent potential safety hazards. However, there is a current detector in the prior art that has some limitations in design and use. This current detector includes a Rogowski coil, a connection part and an instrument body. The current detector design usually includes a current direction mark so that the staff can clearly match the current flow direction when clamping the wire. At the same time, when the connection part of this current detector is used in combination with the instrument body, it is necessary to distinguish the front and back sides. Even if the front and back sides of the connection part are clearly marked in appearance, in actual operation, the user still needs to carefully distinguish them, which not only increases the complexity and difficulty of the operation, but also reduces work efficiency.

[0003] In addition, if the user mistakenly mixes up the front and back sides of the connector and forcibly inserts it, the current detector may not work properly and may even cause damage to the device or circuit, causing unnecessary economic losses and safety hazards to the user. Utility Model Content

[0004] Based on this, in order to simplify the plug-in process and reduce misoperation, the present application proposes an improved current detector, which achieves the function of blind plugging on both the front and back sides by optimizing the design of the connecting part.

[0005] According to one aspect of the present application, there is provided a current detector, characterized in that it includes:

[0006] The instrument body includes a first contact member, wherein the first contact member includes a plurality of first terminals; and

[0007] A connecting part is plugged with the instrument body, the connecting part includes a second contact piece, the second contact piece includes a plurality of second terminals, and multiple signals are transmitted between the instrument body and the connecting part through the first contact piece and the second contact piece respectively, and the multiple signals include a Rogowski coil signal and a ground signal or a Rogowski coil signal, a ground signal and one or more third signals,

[0008] Among them, any one of the multiple first terminals and the multiple second terminals corresponds to one signal among the multiple signals, and the multiple first terminals and the multiple second terminals are arranged in a predetermined manner, so that when the instrument body and the connecting part are inserted forwardly and reversely, the terminals at which the first contact piece and the second contact piece contact each other correspond to the same type of signal, so that the instrument body and the connecting part can correctly transmit the multiple signals.

[0009] According to the current detector provided by the present application, by arranging the first terminals included in the first contact piece and the second terminals included in the second contact piece in a predetermined manner, the terminals that the first contact piece and the second contact piece contact each other correspond to the same type of signal, so that the instrument body and the connecting part can correctly transmit the signal. In this way, when the user plugs the instrument body and the connecting part of the current detector, there is no need to consider whether to plug in the right or wrong way, thereby reducing the complexity and difficulty of the operation and also improving work efficiency.

[0010] The forward and reverse blind plug-in design of the current detector of the present application is not only low-cost and reliable in performance, but also has a simple manufacturing process and excellent performance. More importantly, it breaks the traditional one-way plug-in mode, so that both the front and back sides of the instrument body and the connecting part can be plugged in, which greatly simplifies the user's operation process. When using it, the user can easily complete the card connection without considering the corresponding relationship between the forward and reverse plug-in of the connecting part and the instrument body, thereby greatly improving the user experience. At the same time, this design completely solves the problem of plugging in wires, effectively avoiding equipment damage caused by wrong plug-ins or mistakes, and bringing higher safety and convenience to users. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without exceeding the scope of protection required by the present application.

[0012] Figure 1 FIG. 4 is a schematic diagram of the terminal arrangement of the first contact piece and the second contact piece of the current detector according to the first embodiment of the present application.

[0013] Figure 2 FIG. 4 is a schematic diagram of the terminal arrangement of the first contact piece and the second contact piece of the current detector according to the second embodiment of the present application.

[0014] Figure 3 FIG. 4 is a schematic diagram of the terminal arrangement of the first contact piece and the second contact piece of the current detector according to the third embodiment of the present application.

[0015] Figure 4 FIG. 4 is a schematic diagram of the terminal arrangement of the first contact piece and the second contact piece of the current detector according to the fourth embodiment of the present application.

[0016] Figure 5 FIG. 4 is a schematic diagram of the terminal arrangement of the first contact piece and the second contact piece of the current detector according to the fifth embodiment of the present application.

[0017] Figure 6 Schematic diagram of the arrangement of terminals of a first contact piece and a second contact piece of a current detector according to a sixth embodiment of the present application.

[0018] Figure 7 Schematic diagram of the terminal arrangement of the first contact piece and the second contact piece of the current detector according to the seventh embodiment of the present application.

[0019] Figure 8 Schematic diagram of the terminal arrangement of the first contact piece and the second contact piece of the current detector according to the eighth embodiment of the present application.

[0020] Fig. 9 Schematic diagram of the terminal arrangement of the first contact piece and the second contact piece of the current detector according to the ninth embodiment of the present application.

[0021] Fig.10 It is a schematic diagram of the clamping structure between the instrument body and the connecting part of the current detector according to one embodiment of the present application. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0023] The current detector includes a Rogowski coil, an instrument body and a connection part, one end of the Rogowski coil is detachably connected to the connection part, and the instrument body and the connection part can be connected. In order to realize the functions of positive and negative plugging between the instrument body and the connection part, in terms of electricity, according to some embodiments, the electrical communication connection between the instrument body and the connection part of the current detector is realized by a contact piece to realize positive and negative blind plugging.

[0024] According to one embodiment, the instrument body includes a first contact piece, and the connecting portion includes a second contact piece, wherein the first contact piece and the second contact piece can be in contact with each other in various forms, such as a probe, a contact point, a spring, a contact sheet, etc. When the instrument body and the connecting portion are connected, the first contact piece and the second contact piece are in electrical contact to form a signal transmission body.

[0025] According to one embodiment, a plurality of signals are transmitted between the current detector instrument body and the connection part through the first contact piece and the second contact piece, respectively, and the plurality of signals include a Rogowski coil signal and a ground signal or a Rogowski coil signal, a ground signal and one or more third signals, wherein the third signal may be a signal of a storage chip, an identity chip or a passive device, etc., and the present application does not impose any restrictions on this. The instrument body is used to receive the Rogowski coil signal and / or the third signal transmitted by the connection part and process the signal.

[0026] According to some embodiments, the first contact includes a plurality of first terminals, the second contact includes a plurality of second terminals, and any one of the plurality of first terminals and the plurality of second terminals corresponds to one of the plurality of signals.

[0027] (1) When the connection portion does not have a built-in third signal, the signal between the first contact and the second contact may only include the Rogowski coil signal and the ground signal.

[0028] According to one embodiment, the plurality of first terminals and the plurality of second terminals are arranged in a predetermined manner, such as Figure 1 As shown. Figure 1 In the embodiment, the first contact and the second contact are both signal full connection settings, and the plurality of first terminals and the plurality of second terminals are 180 degrees symmetrical with respect to the middle terminal ①. Figure 1 In the figure, terminal ① corresponds to the ground signal, terminal ② corresponds to the Rogowski coil signal, and terminal ② is 180 degrees symmetrical with respect to terminal ①.

[0029] Figure 2 FIG. 1 is a schematic diagram of the terminal arrangement of the first contact piece and the second contact piece of the current detector according to the second embodiment of the present application. Figure 2 In the embodiment, the second contact signal is fully connected, the plurality of second terminals are 180 degrees symmetrical relative to the middle terminal ①, the first contact includes a terminal ① and a terminal ② (i.e., the two terminals including the middle terminal are connected), or an empty terminal (NC terminal) is set corresponding to the position of a Rogowski coil signal (i.e., the position of a terminal ②).

[0030] It should be noted that although the empty terminal does not connect the corresponding signal, compared with the fully connected setting, the terminal set as an empty terminal actually corresponds to a signal. For example, Figure 2 One of the terminals ② is set as an empty terminal, which corresponds to a Rogowski coil signal. For ease of understanding and explanation, in this application, it can be compared with the case of full connection setting, and it is considered that the empty terminal has a corresponding signal.

[0031] Figure 3 FIG. 1 is a schematic diagram of the terminal arrangement of the first contact piece and the second contact piece of the current detector according to the third embodiment of the present application. Figure 3In the embodiment, the first contact signal is fully connected, the multiple first terminals are 180 degrees symmetrical, the second contact includes a terminal ① and a terminal ② (that is, the two terminals including the middle terminal are connected), or an empty terminal (NC terminal) is set corresponding to the position of a Rogowski coil signal (that is, the position of a terminal ②).

[0032] When using a current detector to measure the current of a wire, the user usually follows the direction of the current arrow to ensure that the current direction of the measured wire is consistent with the direction of the current direction arrow.

[0033] When the current direction arrow is marked on the connection part, the current direction of the measured wire is consistent with the current direction arrow, and the result measured by the instrument body is the actual current. In this case, the instrument body does not need to determine whether the connection part is plugged in forward or reverse. If the current direction of the measured wire is opposite to the arrow direction marked on the connection part, the result measured by the instrument body is opposite to the actual current direction.

[0034] When the current direction arrow is marked on the instrument body, the current direction of the measured wire should be consistent with the arrow direction marked on the instrument body, but the connector may be inserted forward or backward. In this case, the instrument body needs to determine whether the connector is inserted forward or backward to determine the current direction of the measured wire passing through the Rogowski coil. Figure 3 In the terminal arrangement shown, the two terminals of the middle terminal of the second contact are connected, and the first contact distinguishes positive and negative plugging by identifying which side of terminal ② is connected to the NC terminal, or the first contact determines which side of terminal ② receives the Rogowski coil signal to distinguish positive and negative plugging. If positive plugging is identified, the collected Rogowski coil output signal is processed in the forward direction, and if reverse plugging is identified, the collected Rogowski coil output signal is processed in the reverse direction.

[0035] (2) In the case where the third signal is built into the connection portion, the signal between the first contact and the second contact may include a Rogowski coil signal, a ground signal, and one or more third signals.

[0036] When the current direction arrow is marked on the connection part, the current direction of the measured wire is consistent with the direction of the arrow marked on the connection part, and the instrument body does not need to determine whether it is inserted forward or backward between the connection part.

[0037] According to one embodiment, Figure 4As shown, when the first contact member and the second contact member are in a single row, taking 5 terminals as an example, the terminal signal connection arrangement of the first contact member and the second contact member, the plurality of first terminals and the plurality of second terminals are 180 degrees symmetrical relative to the middle terminal ①. Terminal ① corresponds to the ground signal, terminal ② corresponds to the Rogowski coil signal, and terminal ③ corresponds to a third signal. The two output signals of the Rogowski coil are connected to terminals ① and ②, respectively. It can be understood that if there are more than two third signals, corresponding terminals (for example, terminal ④, terminal ⑤, etc.) are set accordingly, and these signals are connected accordingly. In addition, in Figure 4 In the embodiment, terminal ③ may be connected to the Rogowski coil signal, and terminal ② may be connected to a third signal. The present application does not impose any limitation on this.

[0038] According to one embodiment, Figure 4 On the basis of, the first contact signal is fully connected, the multiple first terminals are 180 degrees symmetrical with respect to the middle terminal ①, and among the 5 terminals of the second contact, any terminal ② and / or terminal ③ are set as empty terminals (NC terminals). Moreover, after setting the empty terminals, for any signal, there is at least one terminal for signal connection, that is, among the two terminals ② and the two terminals ③, at least one terminal ② and at least one terminal ③ are reserved respectively, which are not empty terminals. This ensures that no matter whether the insertion is forward or reverse, at least one set of terminals is connected.

[0039] According to one embodiment, Figure 4 On the basis of, the second contact member signal is fully connected, the multiple first terminals are 180 degrees symmetrical with respect to the middle terminal ①, and among the 5 terminals of the first contact member, any terminal ② and / or terminal ③ is set as an empty terminal (NC terminal). Moreover, after setting the empty terminal, for any signal, there is at least one terminal for signal connection, that is, among the two terminals ② and the two terminals ③, at least one terminal ② and at least one terminal ③ are reserved respectively, and are not empty terminals.

[0040] In the case where there are two third signals, the corresponding terminal ④ is set accordingly, and any terminal ② and / or terminal ③ and / or terminal ④ is set as an empty terminal (NC terminal). Moreover, after setting the empty terminal, for any signal, there is at least one terminal for signal connection, that is, among the two terminals ②, the two terminals ③ and the two terminals ④, at least one terminal ②, at least one terminal ③ and at least one terminal ④ are reserved respectively, and are not empty terminals.

[0041] It can be seen that when multiple first terminals and multiple second terminals are arranged in a single row, the two first terminals corresponding to the same type of signal are 180 degrees symmetrical relative to the middle first terminal, and the two second terminals corresponding to the same type of signal are 180 degrees symmetrical relative to the middle second terminal.

[0042] According to one embodiment, Figure 5 As shown, when the first contact member and the second contact member are in double rows, taking 6 terminals as an example, the terminal signal connection settings of the first contact member and the second contact member are such that the first row and the second row of each double row of multiple first terminals and multiple second terminals are 180 degrees symmetrical. Terminal ① corresponds to the ground signal, terminal ② corresponds to the Rogowski coil signal, and terminal ③ corresponds to a third signal. The two output signals of the Rogowski coil are connected to terminals ① and ②, respectively. It can be understood that if there are more than two third signals, corresponding terminals (for example, terminal ④, terminal ⑤, etc.) are set accordingly to connect these signals. In addition, in Figure 5 In the embodiment, the signals corresponding to terminals ①, ② and ③ can be arbitrary. For example, terminal ③ can be connected to a Rogowski coil signal, and terminal ② can be connected to a third signal. For another example, terminal ① can be connected to a Rogowski coil signal, terminal ③ can be connected to a ground signal, and terminal ② can be connected to a third signal. The present application does not impose any restrictions on this.

[0043] According to one embodiment, Figure 5 On the basis of, the first contact signal is fully connected, the first row and the second row of the multiple first terminals in the double row are 180 degrees symmetrical, and among the 6 terminals of the second contact, any one or more of terminals ①, ② and ③ are set as empty terminals (NC terminals), and, after setting the empty terminals, for any signal, there is at least one terminal for signal connection, that is, among the two terminals ①, the two terminals ② and the two terminals ③, at least one terminal ①, at least one terminal ② and at least one terminal ③ are respectively retained, which are not empty terminals.

[0044] According to one embodiment, Figure 5 On the basis of, the second contact signal is fully connected, the first row and the second row of the multiple second terminals in the double row are 180 degrees symmetrical, and among the 6 terminals of the first contact, any one or more of terminals ①, ② and ③ are set as empty terminals (NC terminals), and, after setting the empty terminals, for any signal, there is at least one terminal for signal connection, that is, among the two terminals ①, the two terminals ② and the two terminals ③, at least one terminal ①, at least one terminal ② and at least one terminal ③ are retained respectively, which are not empty terminals.

[0045] It can be seen that when the plurality of first terminals and the plurality of second terminals are arranged in double rows, the first terminals in the first row and the second row in the double row are 180 degrees symmetrical, and the second terminals in the first row and the second row in the double row are 180 degrees symmetrical.

[0046] When the current direction arrow is marked on the instrument body, the instrument body detects whether the connecting part connected to it is inserted forward or backward, and then processes the data to make the final output current direction consistent with the current positive direction defined by the measured wire.

[0047] According to one embodiment, Figure 6 As shown, when the first contact member and the second contact member are in a single row, taking 5 terminals as an example, when inserted forward, the terminals of the first contact member and the second contact member are connected one by one in sequence, and when inserted reversely, the terminals ①, ②, ③, ④ and ⑤ of the first contact member and the terminals ⑤, ④, ③, ② and ① of the second contact member are connected one by one in sequence.

[0048] exist Figure 6 In the illustrated embodiment, as shown in Table 1 and Table 2, the ③ terminal of the second contact is connected to the ground signal, the ② and ④ terminals are connected to the output signal of the Rogowski coil, the ① terminal is connected to the third signal, and the ⑤ terminal is an empty terminal. The output signal of the Rogowski coil is connected to the terminals ②③ or terminals ③④. The ② and ④ terminals of the first contact are connected to the input end of the integrator in the instrument body, which are used to receive the output signal of the Rogowski coil, the ③ terminal is connected to the ground signal, and the ① and ⑤ terminals are respectively connected to the processing module to determine the insertion direction, whether it is forward or reverse insertion, and the detection result is sent to the processing module of the instrument body.

[0049] Table 1

[0050] Second contact ① The third signal ② Rogowski coil signal ③ Ground signal ④ Rogowski coil signal ⑤ NC

[0051] Table 2

[0052] First contact ① Detection signal 1, used to detect the insertion direction of the connector ② Rogowski coil signal ③ Ground signal ④ Rogowski coil signal ⑤ Detection signal 2, used to detect the insertion direction of the connector

[0053] exist Figure 6 In the embodiment shown, the first contact is a fully connected signal setting, and the second contact has only three terminals (eg, ①, ②, ③ or ①, ④, ③) connected to corresponding signals, which is also applicable.

[0054] According to one embodiment, Figure 7 As shown, when the first contact member and the second contact member are double-row, taking 6 terminals as an example, when inserted forward, the terminals of the first contact member and the second contact member are connected one by one in sequence, and when inserted reversely, the ①, ②, ③, ④, ⑤ and ⑥ terminals of the first contact member and the ⑥, ⑤, ④, ③, ② and ① terminals of the second contact member are connected one by one in sequence.

[0055] exist Figure 7In the illustrated embodiment, as shown in Tables 3 and 4, the ③ and ④ terminals of the second contact are connected to the ground signal, the ② and ⑤ terminals are connected to the output signal of the Rogowski coil, the ① terminal is connected to the third signal, and the ⑥ terminal is an empty terminal. The output signal of the Rogowski coil is connected to terminals ③⑤ or terminals ②④. The ② and ⑤ terminals of the first contact are connected to the input end of the integrator in the instrument body, which are used to receive the output signal of the Rogowski coil, the ③ and ④ terminals are connected to the ground signal, and the ① and ⑥ terminals are respectively connected to the processing module to determine the insertion direction, whether it is forward insertion or reverse insertion, and detect the result and send the instruction to the processing module of the instrument body. The processing module of the instrument body performs corresponding processing according to the instruction, and outputs the corresponding forward insertion signal or the corresponding reverse insertion signal.

[0056] Table 3

[0057] Second contact ① The third signal ② Rogowski coil signal ③ Ground signal ④ Ground signal ⑤ Rogowski coil signal ⑥ NC

[0058] Table 4

[0059] First contact ① Detection signal 1, used to detect the insertion direction of the connector ② Rogowski coil signal ③ Ground signal ④ Ground signal ⑤ Rogowski coil signal ⑥ Detection signal 2, used to detect the insertion direction of the connector

[0060] in 6 and Figure 7 In the embodiment shown, the ① terminal of the instrument body can be set to receive the third signal as positive connection, and the collected Rogowski coil output signal can be positively integrated, and the ⑥ terminal can be set to receive the third signal as reverse connection, and the collected Rogowski coil output signal can be reversely integrated.

[0061] According to some embodiments, the forward and reverse insertion is judged by the position where the output signal of the Rogowski coil appears, without using a third signal, and the forward and reverse insertion data is processed.

[0062] Regardless of single-row terminals or double-row terminals, the two output signal terminals of the second contact Rogowski coil are correspondingly connected to the two terminals of the first contact and are respectively connected to the forward integral processing input terminal and the reverse integral processing input terminal to realize data processing.

[0063] For example, when the first contact and the second contact are double-row terminals, the ③ and ④ terminals of the second contact are connected to the ground signal, the ② and ⑤ terminals are respectively connected to the two output signals of the Rogowski coil, and the ① and ⑥ terminals are connected to the third signal. The ② and ⑤ terminals of the first contact receive the output signals of the Rogowski coil respectively to determine the insertion direction, whether it is forward or reverse insertion, the ② terminal is connected to the forward integral processing input terminal, and the ⑤ terminal is connected to the reverse integral processing input terminal. The ③ and ④ terminals are connected to the signal ground, and the ① and ⑥ terminals are connected to the processing module.

[0064] For another example, when the first contact and the second contact are single-row terminals, the ③ terminal of the second contact is connected to the signal ground, the ① and ⑤ terminals are respectively connected to the two output signals of the Rogowski coil, and the ② and ④ terminals are connected to the third signal. The ① and ⑤ terminals of the first contact receive the output signals of the Rogowski coil respectively to determine the insertion direction, whether it is forward insertion or reverse insertion, the ① terminal is connected to the forward integral processing input terminal, the ⑤ terminal is connected to the reverse integral processing input terminal, the ② and ④ terminals are connected to the third signal, and the ③ terminal is connected to the signal ground.

[0065] It can be seen that during forward insertion and reverse insertion, the terminal positions of the empty terminals in the first contact element connected to the second contact element are different.

[0066] Specifically, the positive insertion and reverse insertion correspond to the first empty terminal preset position and the second empty terminal preset position respectively, and the instrument body is used to output a positive insertion signal when the terminal position of the empty terminal connected to the second contact piece in the first contact piece matches the first empty terminal preset position; and output a reverse insertion signal when the terminal position of the empty terminal connected to the second contact piece in the first contact piece matches the second empty terminal preset position.

[0067] The above embodiments are only examples, and there are various other solutions, which are not listed here one by one. Various modifications that can be thought of by those skilled in the art under the inspiration of the above embodiments are all within the scope of this application.

[0068] pass Figures 1 to 7 In the embodiment shown, the current detector of the present application includes an instrument body and a connecting part, the instrument body and the connecting part are plugged together, the instrument body includes a first contact piece, the connecting part includes a second contact piece, the first contact piece includes a plurality of first terminals, the second contact piece includes a plurality of second terminals, and a plurality of signals are transmitted between the instrument body and the connecting part through the first contact piece and the second contact piece respectively, the plurality of signals include a Rogowski coil signal and a ground signal or a Rogowski coil signal, a ground signal and one or more third signals, wherein any one of the plurality of first terminals and the plurality of second terminals corresponds to one of the plurality of signals, and the plurality of first terminals and the plurality of second terminals are arranged in a predetermined manner, respectively, so that when the instrument body and the connecting part are plugged in forward and reverse, the terminals contacted by the first contact piece and the second contact piece all correspond to the same type of signal, so that the instrument body and the connecting part can correctly transmit the plurality of signals.

[0069] According to some embodiments, for any one of the first contact and the second contact, at least one of the plurality of first terminals or the plurality of second terminals corresponds to a ground signal, and any signal other than the ground signal corresponds to two of the plurality of first terminals or the plurality of second terminals.

[0070] According to some embodiments, both the first contact and the second contact are signal full connection arrangements.

[0071] According to some embodiments, one of the first contact and the second contact is set for full signal connection, and an empty terminal is set in the other in a predetermined manner, wherein the empty terminal is a terminal corresponding to any one of a plurality of signals, and after the empty terminal is set, there is at least one terminal for connection for any one of the plurality of signals.

[0072] According to some embodiments, the first contact is set for full signal connection, and the terminal corresponding to any signal except the ground signal in the second contact is set as an empty terminal, and after the empty terminal is set, there is at least one terminal for connection for any signal among the multiple signals.

[0073] According to some embodiments, during forward insertion and reverse insertion, the positions of the empty terminals of the first contacts connected to the second contacts are different.

[0074] According to some embodiments, positive insertion and reverse insertion correspond to a first empty terminal preset position and a second empty terminal preset position, respectively, and the instrument body is used to output a positive insertion signal when the terminal position of the empty terminal connected to the second contact piece in the first contact piece matches the first empty terminal preset position; and output a reverse insertion signal when the terminal position of the empty terminal connected to the second contact piece in the first contact piece matches the second empty terminal preset position.

[0075] According to other embodiments, Figure 8 and Fig. 9 As shown, any of the first terminals of the first contact piece and the second terminals of the second contact piece are ring-shaped pieces, and the ring-shaped pieces form concentric circles from the inside to the outside. Figure 8 In , for either the first contact or the second contact, the terminal of the inner ring corresponds to the ground signal, and the terminal of the outer ring corresponds to the Rogowski coil signal, or vice versa. Fig. 9 In the embodiment, for either the first contact or the second contact, the terminal of the inner ring corresponds to the ground signal, the terminal of the middle ring corresponds to the third signal, and the terminal of the outer ring corresponds to the Rogowski coil signal, or the terminal of the inner ring corresponds to the Rogowski coil signal, the terminal of the middle ring corresponds to the third signal, and the terminal of the outer ring corresponds to the ground signal, and so on.

[0076] It should be noted that for two or more third signals, more annular parts can be set, and as long as the corresponding relationship between the first contact part and the second contact part in signal connectivity is guaranteed, the corresponding relationship between each annular part and the signal can be arbitrarily combined, and this application does not impose any restrictions on this.

[0077] In order to realize the functions of positive insertion and reverse insertion between the instrument body and the connection part, in addition to the above-mentioned electrical settings, the instrument body and the connection part also need to be coordinated in mechanical structure.

[0078] Fig.10 Schematic diagram of the clamping structure of the instrument body and the connecting part of the current detector according to an embodiment of the present application. Fig.10 As shown, the instrument body and the connection part are realized by a clamping structure symmetrically arranged on both sides.

[0079] Specifically, the instrument body is provided with a first positioning structure, which is located on the inner wall of the top end of the instrument body, and the connecting part is provided with a second positioning structure which is matched with the first positioning structure, which is located on the side wall of the connecting part.

[0080] According to one embodiment, the first positioning structure and the second positioning structure can be a positioning column and a positioning groove, or a positioning groove and a positioning column, or other forms. Table 5 shows the design of the positioning groove and the positioning column of the first positioning structure and the second positioning structure.

[0081] Table 5

[0082]

[0083] It should be noted that the design of the number of positioning grooves and positioning columns of the first positioning structure and the second positioning structure is not limited to the implementation method shown in Table 5. As long as the forward and reverse blind insertion of the instrument body and the connecting part can be achieved, other design methods that can be thought of by technical personnel in this field are within the scope of coverage of this application.

[0084] In this way, the first positioning structure and the second positioning structure cooperate, on the one hand, to increase the tightness of the connection between the connecting part and the instrument body and improve the stability of the connecting part; on the other hand, according to the design of the number of positioning grooves and positioning columns, forward and reverse blind insertion can also be achieved. The first positioning structure and the second positioning structure cooperate, so that the instrument body and the connecting part can be adapted when inserted forward or reversely.

[0085] The embodiments of the present application are described in detail above. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and its core idea of ​​the present application. At the same time, changes or deformations made by those skilled in the art based on the ideas of the present application, the specific implementation methods and the scope of application of the present application, all belong to the scope of protection of the present application. In summary, the content of this specification should not be construed as a limitation on the present application.

Claims

1. A current detector, characterized in that: include: The instrument body includes a first contact member, wherein the first contact member includes a plurality of first terminals; as well as A connecting part is plugged with the instrument body, the connecting part includes a second contact piece, the second contact piece includes a plurality of second terminals, and multiple signals are transmitted between the instrument body and the connecting part through the first contact piece and the second contact piece respectively, and the multiple signals include a Rogowski coil signal and a ground signal or a Rogowski coil signal, a ground signal and one or more third signals, Among them, any one of the multiple first terminals and the multiple second terminals corresponds to one signal among the multiple signals, and the multiple first terminals and the multiple second terminals are arranged in a predetermined manner, so that when the instrument body and the connecting part are inserted forwardly and reversely, the terminals at which the first contact piece and the second contact piece contact each other correspond to the same type of signal, so that the instrument body and the connecting part can correctly transmit the multiple signals.

2. The current detector according to claim 1, characterized in that For any one of the first contact and the second contact, at least one of the plurality of first terminals or the plurality of second terminals corresponds to the ground signal, and any signal other than the ground signal corresponds to two of the plurality of first terminals or the plurality of second terminals.

3. The current detector according to claim 2, characterized in that Both the first contact and the second contact are in a signal full connection configuration.

4. The current detector according to claim 2, characterized in that One of the first contact member and the second contact member is set for full signal connection, and the other one is set with an empty terminal in a predetermined manner, wherein the empty terminal is a terminal corresponding to any one of the multiple signals, and after the empty terminal is set, there is at least one terminal for connection for any one of the multiple signals.

5. The current detector according to claim 4, characterized in that The first contact is a signal full connection setting, and the terminal corresponding to any signal except the ground signal in the second contact is set as an empty terminal, and after the empty terminal is set, there is at least one terminal connected for any signal among the multiple signals.

6. The current detector according to claim 5, characterized in that During forward insertion and reverse insertion, the terminal positions of the empty terminals of the first contact members connected to the second contact members are different.

7. The current detector according to claim 6, characterized in that Positive insertion and reverse insertion correspond to a first empty terminal preset position and a second empty terminal preset position respectively, and the instrument body is used to output a positive insertion signal when the terminal position of the empty terminal connected to the second contact member in the first contact member matches the first empty terminal preset position; When the terminal position of the empty terminal connected to the second contact member in the first contact member matches the preset position of the second empty terminal, a reverse insertion signal is output.

8. The current detector according to claim 2, characterized in that When the multiple first terminals and the multiple second terminals are arranged in a single row, the two first terminals corresponding to the same type of signal are 180 degrees symmetrical relative to the middle first terminal, and the two second terminals corresponding to the same type of signal are 180 degrees symmetrical relative to the middle second terminal.

9. The current detector according to claim 2, characterized in that When the plurality of first terminals and the plurality of second terminals are arranged in double rows, the first terminals in the first row and the second row in the double rows are 180 degrees symmetrical, and the second terminals in the first row and the second row in the double rows are 180 degrees symmetrical.

10. The current detector according to claim 1, wherein: Any first terminal and any second terminal among the plurality of first terminals and the plurality of second terminals are ring-shaped parts, and the ring-shaped parts form concentric circles from the inside to the outside.

11. The current detector according to any one of claims 1 to 10, characterized in that: The inner wall at the top of the instrument body is provided with a first positioning structure, and the side wall of the connecting part is provided with a second positioning structure. The first positioning structure is a positioning groove or a positioning column, and the second positioning structure is correspondingly a positioning column or a positioning groove. The first positioning structure and the second positioning structure cooperate so that the instrument body and the connecting part can be adapted to each other when inserted forward or reversely.

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