Detection signal terminator module

Abstract

The utility model provides a detection signal terminator module, which relates to the terminator module technical field, and comprises a terminator body and a coaxial cable structure, the back side of the terminator body is provided with a PCB board, the top of the terminator body is provided with a first terminal close to the left side, the right side of the first terminal is provided with a second terminal, and the right side of the second terminal is provided with a third terminal. A third terminal is arranged on the right side of the second terminal, the terminator body is arranged on the back side of the terminator body, 47K tail end resistance is monitored through line design, the impedance characteristic of a material is 75 ohms, a 75 ohm resistor is connected with a 100 nf capacitor module in series for impedance matching and low-frequency signal filtering and terminating, and the terminator body is arranged on the back side of the terminator body. A system detection signal can be effectively cut off, the false alarm rate increase caused by overflow can be prevented, the detection signal can be effectively reflected, and the problems that when an existing terminator module is used, the false alarm rate is high, a core wire of a coaxial cable and a shielding layer are prone to short circuit due to twisting of the cable, and the failure is caused are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of terminator modules, in particular to a detection signal terminator module. Background Art

[0002] A terminator is a resistor that reflects the signal from the cable. Two terminators are installed on coaxial cable, one at each end of the cable. One terminator (not two) requires a ground connection. The terminator must have a specific resistance value, which depends on the network.

[0003] The existing terminator module has a high false alarm rate when in use, and the core wire and the shielding layer of the coaxial cable are easily short-circuited due to twisting the cable, resulting in failure. Therefore, we propose a detection signal terminator module. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art. When the existing terminator module is used, its false alarm rate is high, and the core wire and the shielding layer of the coaxial cable are easily short-circuited due to twisting of the cable, resulting in failure.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A detection signal terminator module comprises a terminator body and a coaxial cable structure, wherein a PCB board is provided on the back side of the terminator body, a first terminal is provided on the top and near the left side of the terminator body, a second terminal is provided on the right side of the first terminal, a third terminal is provided on the right side of the second terminal, the terminator body is provided on the back side of the terminator body, a front end module is provided on the front side of the terminator body, a capacitor module is provided on the top and near the left side of the front end module, a first resistor is provided on the right side and near the front of the capacitor module, and a second resistor is provided on the back side of the first resistor.

[0007] As a preferred solution of the utility model, the coaxial cable structure includes a structural connecting rod, a shielding layer and a core wire. The shielding layer is provided on the left side wall of the structural connecting rod, and the core wire is provided at the center of the shielding layer.

[0008] The technical effect of adopting the above further scheme is that the core wire and the shielding layer of the coaxial cable are easily short-circuited due to twisting of the cable, causing failure. By designing the shielding layer and the core wire, the short circuit caused by twisting can be avoided after the coaxial cable is connected to the three terminals, and the coaxial cable and the PCB board can be bundled together, further reducing the possibility of twisting.

[0009] As a preferred solution of the utility model, the shielding layer is plugged into the first terminal and the third terminal for use.

[0010] The technical effect of adopting the above further solution is that the two ends of the shielding layer can be plugged into the first terminal and the third terminal respectively.

[0011] As a preferred solution of the utility model, the core wire is plugged into the second terminal for use.

[0012] The technical effect of adopting the above further solution is that the core wire can be plugged into the second terminal and used in conjunction with it.

[0013] As a preferred solution of the present invention, the resistance value of the first resistor is 75Ω, and the resistance value of the second resistor is 47Ω.

[0014] As a preferred solution of the present utility model, the capacitance value of the capacitor module is 100nf.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] In the utility model, the 47K terminal resistance is monitored through line design, and the impedance characteristic of the material itself is 75Ω. A 75Ω resistor is connected in series with a 100nf capacitor module for impedance matching and low-frequency signal filtering and termination, which can effectively cut off the system detection signal to prevent overflow and increase the false alarm rate. At the same time, it can effectively reflect the detection signal and improve the positioning resolution accuracy. By designing the shielding layer and the core wire, the short circuit caused by twisting can be avoided after the coaxial cable is connected to the three terminals, and the coaxial cable and the PCB board can be bundled together, which further reduces the possibility of twisting together, and avoids the existing terminator module. When in use, the false alarm rate is high, and the core wire and the shielding layer of the coaxial cable are easily short-circuited due to the twisting cable entangled together, causing failure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the main structure of a detection signal terminator module provided by the utility model;

[0018] Figure 2 A schematic diagram of the coaxial cable structure of a detection signal terminator module provided by the utility model;

[0019] Figure 3 The utility model provides a circuit diagram of a detection signal terminator module.

[0020] Legend: 1. Terminator body; 11. PCB board; 2. First terminal; 3. Second terminal; 4. Third terminal; 5. Front-end module; 6. Capacitor module; 7. First resistor; 8. Second resistor; 9. Coaxial cable structure; 901. Structural connecting rod; 902. Shielding layer; 903. Core wire. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0022] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant literature, and several embodiments of the present invention are given. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0023] It should be noted that when an element is referred to as being "fixed on" another element, it may be directly on the other element or there may also be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this article are for illustrative purposes only.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used in this article includes any and all combinations of one or more related listed items.

[0025] Example 1

[0026] like Figure 1-3As shown, the utility model provides a technical solution: a detection signal terminator module, including a terminator body 1 and a coaxial cable structure 9, a PCB board is provided on the back side of the terminator body 1, a first terminal 2 is provided on the top and near the left side of the terminator body 1, a second terminal 3 is provided on the right side of the first terminal 2, a third terminal 4 is provided on the right side of the second terminal 3, a terminator body 1 is provided on the back side of the terminator body 1, a front end module 5 is provided on the front side of the terminator body 1, a capacitor module 6 is provided on the top and near the left side of the front end module 5, a first resistor 7 is provided on the right side and near the front side of the capacitor module 6, a second resistor 8 is provided on the back side of the first resistor 7, a 47K terminal resistor is monitored by circuit design, and the material itself The impedance characteristic is 75Ω. A 75Ω resistor is connected in series with a 100nf capacitor module 6 for impedance matching and low-frequency signal filtering and termination. This can effectively cut off the system detection signal to prevent overflow and increase the false alarm rate. At the same time, it can effectively reflect the detection signal and improve the positioning resolution accuracy. By designing the shielding layer 902 and the core wire 903, the coaxial cable can be connected to the three terminals to avoid short circuits caused by twisting, and the coaxial cable and the PCB board can be bundled together, further reducing the possibility of twisting, avoiding the existing terminator module when in use, its false alarm rate is high, and the core wire 903 and the shielding layer 902 of the coaxial cable are easily short-circuited due to twisting of the cable, causing failure.

[0027] Example 2

[0028] like Figure 1-3 As shown, the utility model provides a technical solution: the coaxial cable structure 9 includes a structural connecting rod 901, a shielding layer 902 and a core wire 903. The shielding layer 902 is provided on the left wall of the structural connecting rod 901, and the core wire 903 is provided at the center of the shielding layer 902. The core wire 903 and the shielding layer 902 of the coaxial cable are easily short-circuited due to twisting of the cable, resulting in failure. By designing the shielding layer 902 and the core wire 903, the coaxial cable can avoid short circuits caused by twisting after the three terminals are connected, and the coaxial cable and the PCB board can be bundled together, further reducing the possibility of twisting together. The shielding layer 902 is plugged into the first terminal 2 and the third terminal 4 for use, and the two ends of the shielding layer 902 can be respectively plugged into the first terminal 2 and the third terminal 4. The core wire 903 is plugged into the second terminal 3 for use, and the core wire 903 can be plugged into the second terminal 3 and used in conjunction with it. The resistance value of the first resistor 7 is 75Ω, the resistance value of the second resistor 8 is 47Ω, and the capacitance value of the capacitor module 6 is 100nf.

[0029] The working process of the utility model is as follows: when using a detection signal terminator module, first, the circuit design monitors the 47K terminal resistance. The impedance characteristic of the material itself is 75Ω. A 75Ω resistor is connected in series with a 100nf capacitor module 6 for impedance matching and low-frequency signal filtering and termination. This can effectively cut off the system detection signal to prevent overflow and increase the false alarm rate. At the same time, it can effectively reflect the detection signal and improve the positioning resolution accuracy. By designing the shielding layer 902 and the core wire 903, the short circuit caused by twisting can be avoided after the coaxial cable is connected to the three terminals, and the coaxial cable and the PCB board can be bundled together, further reducing the possibility of twisting.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A detection signal terminator module, comprising a terminator body (1) and a coaxial cable structure (9), characterized in that: A PCB board (11) is provided on the back side of the terminator body (1); a first terminal (2) is provided on the top and near the left side of the terminator body (1); a second terminal (3) is provided on the right side of the first terminal (2); a third terminal (4) is provided on the right side of the second terminal (3); a terminator body (1) is provided on the back side of the terminator body (1); a front end module (5) is provided on the front side of the terminator body (1); a capacitor module (6) is provided on the top and near the left side of the front end module (5); a first resistor (7) is provided on the right side and near the front side of the capacitor module (6); and a second resistor (8) is provided on the back side of the first resistor (7).

2. A detection signal terminator module according to claim 1, characterized in that: The coaxial cable structure (9) comprises a structural connecting rod (901), a shielding layer (902) and a core wire (903); the shielding layer (902) is provided on the left side wall of the structural connecting rod (901), and the core wire (903) is provided at the center of the shielding layer (902).

3. A detection signal terminator module according to claim 1, characterized in that: The shielding layer (902) is plugged into the first terminal (2) and the third terminal (4) for use.

4. A detection signal terminator module according to claim 1, characterized in that: The core wire (903) is plugged into the second terminal (3) for use.

5. A detection signal terminator module according to claim 1, characterized in that: The resistance value of the first resistor (7) is 75Ω, and the resistance value of the second resistor (8) is 47Ω.

6. A detection signal terminator module according to claim 1, characterized in that: The capacitance value of the capacitor module (6) is 100 nf.

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