High-precision impedance multilayer circuit board

Abstract

The utility model provides a kind of high-precision impedance multilayer circuit board, it is related to circuit board technical field, including detection circuit, the inside electrical connection of detection circuit has the detection element for detecting circuit board impedance, the both ends of detection circuit are provided with the communication control seat of on-off control to it. The utility model has the advantages that: in the circuit of multilayer circuit board, resistance that can be adjusted is arranged, and detection circuit and detection element that can detect its impedance are arranged inside multilayer circuit board, according to the requirement control low resistance conductor that detects, detection circuit is communicated to the line of multilayer circuit board, realize the detection of multilayer circuit board impedance, and according to the impedance data detected, control pressing piece to exert force on resistance, make resistance and the line of multilayer circuit board connect, add element at the signal transmission line terminal of multilayer circuit board, realize the adjustment of multilayer circuit board impedance, realize the stability of multilayer circuit board impedance.

Description

Technical Field

[0001] This utility model relates to the field of circuit board technology, and in particular to a high-precision impedance multilayer circuit board. Background Technology

[0002] Impedance multilayer circuit boards are circuit boards composed of multiple conductive and insulating layers stacked alternately, and electrical connections between the layers are achieved through vias, etc. During the design and manufacturing process, the characteristic impedance of the circuit is strictly controlled to meet specific electrical performance requirements.

[0003] However, existing impedance multilayer circuit boards are prone to impedance deviation due to heat generation during use, which in turn affects the impedance value of the impedance multilayer circuit board and affects signal transmission performance. Utility Model Content

[0004] Therefore, the purpose of this utility model is to propose a high-precision impedance multilayer circuit board to solve the problems mentioned in the background art and overcome the shortcomings of the existing technology.

[0005] To achieve the above objectives, one embodiment of this utility model provides a high-precision impedance multilayer circuit board, comprising a circuit substrate composed of multiple conductive layers and insulating layers. A control chip and several electronic components are fixedly mounted inside the circuit substrate. A detection circuit is disposed inside the circuit substrate, connecting the input and output terminals of the circuit board. A detection element for detecting the impedance of the circuit board is electrically connected inside the detection circuit. A connection control socket for controlling the on / off state of the detection circuit is disposed at both ends of the detection circuit. A low-resistance conductor for conducting electricity is fixedly mounted inside the connection control socket. The detection element and the control chip are signal-connected. The control chip is signal-connected to a pressing piece for compression. A resistor for adjusting the impedance of the circuit board is attached to one end of the pressing piece. A rotatable elastic fixing base is fixedly mounted to one end of the resistor.

[0006] Preferably, in any of the above embodiments, the circuit board has conductive lines inside, the control chip and several electronic components are connected through the conductive lines, and the detection circuit is located on one side of the conductive lines.

[0007] The above technical solution is adopted: the conductive lines inside the circuit board are responsible for connecting the control chip and various electronic components to ensure the normal operation of the circuit. The detection circuit is located on one side of the conductive lines, which does not affect the operation of the original circuit, and can detect the impedance of the circuit board when needed. This allows the detection circuit to easily obtain the electrical information of the circuit board, while avoiding interference with the main circuit, thus ensuring the stability and reliability of the entire circuit board.

[0008] Preferably, in any of the above embodiments, the detection element is fixedly mounted on one end of the circuit board, and the detection element and the control chip are connected by signals.

[0009] The above technical solution involves a signal connection between the detection element and the control chip. The placement of the detection element facilitates accurate impedance detection of the circuit board. The detection element transmits the detected impedance data to the control chip in real time. The control chip uses this data to determine the impedance status of the circuit board, ensuring the timeliness and accuracy of data transmission and providing a reliable basis for subsequent adjustment of the circuit board impedance.

[0010] Preferably, in any of the above embodiments, the communication control base is fixedly installed at both ends of the circuit board, and the interior of the communication control base is provided with a movable groove to accommodate a low-resistance conductor.

[0011] The above technical solution provides support for the low-resistance conductor when the circuit board impedance needs to be detected, enabling the detection circuit to connect with the conductive lines of the circuit board, thereby realizing the detection of the circuit board impedance. This ensures the stable movement of the low-resistance conductor, guarantees that the detection circuit can be accurately connected to the line, and improves the reliability of the detection.

[0012] Preferably, in any of the above embodiments, the low-resistance conductor includes an electric drive rod connected to the control chip signal and a conductive plate connecting the conductive line and the detection circuit. The electric drive rod is fixedly installed inside the control base, and one end of the electric drive rod is fixedly installed with a conductive plate that moves inside the control base.

[0013] The above technical solution is adopted as follows: when the control chip issues a command, the electric drive rod extends and retracts, driving the conductive plate to move within the control base. The conductive plate can connect the conductive line and the detection circuit, enabling the detection circuit to detect the impedance of the circuit board. This allows for flexible control of the connection and disconnection of the detection circuit, improving the convenience and accuracy of the detection.

[0014] Preferably, in any of the above embodiments, the pressing piece includes an electric telescopic rod connected to a control chip signal and a pressure sleeve for pressing. The electric telescopic rod is fixedly installed at one end of the circuit board, and a pressure sleeve for pressing the resistor is fixedly installed at one end of the electric telescopic rod. An elastic rubber ring for protection is fixedly installed at one end of the pressure sleeve. The elastic rubber ring and the circuit board are fixedly installed. A movable locking block for limiting the elastic fixing seat is provided at one end of the pressure sleeve.

[0015] The above technical solution is adopted: the electric telescopic rod is controlled by the control chip. The electric telescopic rod drives the pressure sleeve to move and apply pressure to the resistor. The elastic rubber ring at one end of the pressure sleeve plays a protective role to prevent the pressure sleeve from damaging the circuit board. The movable block at one end of the pressure sleeve limits the elastic fixing seat to ensure the installation stability of the elastic fixing seat. It also facilitates the disassembly and adjustment of the resistor, ensuring that the resistor can accurately adjust the impedance of the circuit board.

[0016] Preferably, one end of the elastic fixing seat is provided with a boss that limits its movement, the elastic fixing seat is rotatably connected to the inside of the circuit board, and the resistor is fixedly installed inside the elastic fixing seat.

[0017] The above technical solution uses a boss at one end of the elastic fixing seat to limit its movement, ensuring stability during rotation and preventing deviation. By squeezing the elastic fixing seat to deform it, the connection between the resistor and the circuit board can be adjusted, thereby adjusting the impedance of the circuit board. The elasticity of the elastic fixing seat itself provides buffer support for the resistor, protecting it from external damage. At the same time, the working state of the resistor can be flexibly adjusted according to requirements. The resistor and the elastic fixing seat do not affect the normal operation of the circuit board.

[0018] Compared with the prior art, the advantages and beneficial effects of this utility model are as follows: 1. A resistor with adjustable resistance is set in the circuit of the multilayer circuit board, and a detection circuit and detection element capable of detecting its impedance are set inside the multilayer circuit board. According to the detection requirements, a low-resistance conductor is controlled to connect the detection circuit to the circuit of the multilayer circuit board to realize the detection of the impedance of the multilayer circuit board. Based on the detected impedance data, a pressure plate is controlled to apply force to the resistor, so that the resistor and the circuit of the multilayer circuit board are connected. Components are added to the signal transmission line terminal of the multilayer circuit board to adjust the impedance of the multilayer circuit board, thereby stabilizing the impedance of the multilayer circuit board, reducing the impedance deviation generated by the multilayer circuit board during operation, and improving the stability of the multilayer circuit board operation.

[0019] 2. The pressing plate is used to limit the installation of the elastic fixing seat, ensuring the stability and convenience of the elastic fixing seat installation and removal. At the same time, the elasticity of the elastic fixing seat itself is used to support the resistor. The connection between the resistor and the multilayer circuit board can be adjusted according to the requirements, and the working state of the resistor can be adjusted.

[0020] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0021] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of the structure according to an embodiment of the present utility model; Figure 2 This is a partial structural schematic diagram according to an embodiment of the present utility model; Figure 3 This is a cross-sectional structural diagram of the communication control base according to an embodiment of the present utility model; Figure 4 This is a cross-sectional structural diagram of the pressing sheet according to an embodiment of the present invention; Among them: 1-Circuit board, 2-Detection circuit, 3-Detection element, 4-Connection control seat, 5-Low resistance conductor, 51-Electric drive rod, 52-Conductive sheet, 6-Pressing sheet, 61-Electric telescopic rod, 62-Pressure sleeve, 7-Resistor, 8-Elastic fixing seat, 9-Elastic rubber ring, 10-Modible locking block, 11-Boss. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings, but the scope of protection of the present invention is not limited to the following description.

[0023] like Figure 1-4 As shown in the figure, a high-precision impedance multilayer circuit board according to an embodiment of the present invention includes a circuit board 1 composed of multiple conductive layers and insulating layers. A control chip and several electronic components are fixedly installed inside the circuit board 1. A detection circuit 2 is provided inside the circuit board 1, which is located at the input and output ends of the circuit board. A detection element 3 for detecting the impedance of the circuit board is electrically connected inside the detection circuit 2. A connection control seat 4 for controlling the on / off state of the detection circuit 2 is provided at both ends of the detection circuit 2. A low-resistance conductor 5 for conducting electricity is fixedly installed inside the connection control seat 4. The detection element 3 and the control chip are signal connected. The control chip is signal connected to a pressing piece 6 for pressing. A resistor 7 for adjusting the impedance of the circuit board is attached to one end of the pressing piece 6. A rotatable elastic fixing seat 8 is fixedly installed at one end of the resistor 7.

[0024] Preferably, in any of the above schemes, the circuit board 1 has conductive lines inside, the control chip and several electronic components are connected through the conductive lines, and the detection circuit 2 is located on one side of the conductive lines.

[0025] The above technical solution is adopted: the conductive lines inside the circuit board 1 are responsible for connecting the control chip and various electronic components to ensure the normal operation of the circuit. The detection circuit 2 is located on one side of the conductive lines, which does not affect the operation of the original circuit, and can detect the impedance of the circuit board when needed. This allows the detection circuit 2 to easily obtain the electrical information of the circuit board, while avoiding interference to the main circuit, thus ensuring the stability and reliability of the entire circuit board.

[0026] Preferably, in any of the above schemes, the detection element 3 is fixedly mounted on one end of the circuit board 1, and the detection element 3 is connected to the control chip via signal connection.

[0027] The above technical solution is adopted: the detection element 3 is connected to the control chip for signal transmission. Its position is set to facilitate accurate detection of the circuit board impedance. The detection element 3 transmits the detected impedance data to the control chip in real time. The control chip judges the impedance status of the circuit board based on these data, ensuring the timeliness and accuracy of data transmission and providing a reliable basis for subsequent adjustment of the circuit board impedance.

[0028] Preferably, in any of the above schemes, the communication control base 4 is fixedly installed at both ends of the circuit board 1, and the communication control base 4 has an internal slot for accommodating the low-resistance conductor 5.

[0029] The above technical solution allows for the following: when the circuit board impedance needs to be detected, the connection control base 4 can provide support for the low-resistance conductor 5, enabling the detection circuit 2 to connect with the conductive lines of the circuit board, thereby realizing the detection of the circuit board impedance, ensuring the stable movement of the low-resistance conductor 5, ensuring that the detection circuit 2 can be accurately connected to the line, and improving the reliability of the detection.

[0030] Preferably, in any of the above embodiments, the low-resistance conductor 5 includes an electric drive rod 51 connected to the control chip signal and a conductive sheet 52 connecting the conductive line and the detection circuit 2. The electric drive rod 51 is fixedly installed inside the control base 4, and one end of the electric drive rod 51 is fixedly installed with the conductive sheet 52 that moves inside the control base 4.

[0031] The above technical solution is adopted: when the control chip issues a command, the electric drive rod 51 extends and retracts, driving the conductive sheet 52 to move within the control seat 4. The conductive sheet 52 can connect the conductive line and the detection circuit 2, realizing the detection circuit 2 to detect the impedance of the circuit board. This allows the connection and disconnection of the detection circuit 2 to be flexibly controlled, improving the convenience and accuracy of the detection.

[0032] Preferably, in any of the above embodiments, the pressing plate 6 includes an electric telescopic rod 61 connected to the control chip signal and a pressure sleeve 62 for pressing. The electric telescopic rod 61 is fixedly installed at one end of the circuit board 1. The pressure sleeve 62 for pressing the resistor 7 is fixedly installed at one end of the electric telescopic rod 61. An elastic rubber ring 9 for protection is fixedly installed at one end of the pressure sleeve 62. The elastic rubber ring 9 and the circuit board 1 are fixedly installed. A movable locking block 10 for limiting the elastic fixing seat 8 is provided at one end of the pressure sleeve 62.

[0033] The above technical solution is adopted: the electric telescopic rod 61 is controlled by the control chip. The electric telescopic rod 61 drives the pressure sleeve 62 to move and apply pressure to the resistor 7. The elastic rubber ring 9 at one end of the pressure sleeve 62 plays a protective role to prevent the pressure sleeve 62 from damaging the circuit board 1. The movable locking block 10 at one end of the pressure sleeve 62 limits the elastic fixing seat 8 to ensure the installation stability of the elastic fixing seat 8. At the same time, it also facilitates the disassembly and adjustment of the resistor 7, ensuring that the resistor 7 can accurately adjust the impedance of the circuit board.

[0034] Preferably, one end of the elastic fixing seat 8 is provided with a boss 11 for limiting its position, the elastic fixing seat 8 is rotatably connected to the inside of the circuit board 1, and the resistor 7 is fixedly installed inside the elastic fixing seat 8.

[0035] The above technical solution is adopted: the protrusion 11 at one end of the elastic fixing seat 8 limits it, so that it remains stable during rotation and avoids deviation. By squeezing the elastic fixing seat 8 to deform it, the connection degree between the resistor 7 and the circuit board can be adjusted, thereby adjusting the impedance of the circuit board. The elasticity of the elastic fixing seat 8 itself provides buffer support for the resistor 7, protecting the resistor 7 from damage by external forces. At the same time, the working state of the resistor 7 can be flexibly adjusted according to the needs. The resistor 7 and the elastic fixing seat 8 do not affect the normal operation of the circuit board.

[0036] The working principle of this high-precision impedance multilayer circuit board is as follows: When the circuit board is working, the detection element 3 of the detection circuit 2 monitors the impedance of the circuit board in real time. If detection is required, the control chip controls the electric drive rod 51 to extend, pushing the conductive plate 52 to move, so that the detection circuit 2 connects to the conductive line of the circuit board. The detection element 3 transmits the detected impedance data to the control chip. If the control chip determines that there is an impedance deviation, it controls the electric telescopic rod 61 to extend, driving the pressure sleeve 62 to squeeze the resistor 7. By adjusting the resistor 7, an element is added at the end of the signal transmission line to compensate for the impedance deviation caused by factors such as heat generation, thereby realizing the adjustment of the circuit board impedance.

[0037] Compared with the prior art, the present invention has the following advantages: 1. A resistor 7 with adjustable resistance is set in the circuit of the multilayer circuit board. A detection circuit 2 and a detection element 3 that can detect the impedance of the multilayer circuit board are set inside the multilayer circuit board. According to the detection requirements, the low-resistance conductor 5 is controlled to connect the detection circuit 2 to the circuit of the multilayer circuit board to realize the detection of the impedance of the multilayer circuit board. Based on the detected impedance data, the pressing plate 6 is controlled to apply force to the resistor 7, so that the resistor and the circuit of the multilayer circuit board are connected. Components are added to the signal transmission line terminal of the multilayer circuit board to realize the adjustment of the impedance of the multilayer circuit board, thereby stabilizing the impedance of the multilayer circuit board, reducing the impedance deviation generated by the multilayer circuit board during operation, and improving the stability of the multilayer circuit board operation.

[0038] 2. The pressing plate 6 is used to limit the installation of the elastic fixing seat 8, ensuring the stability and convenience of the elastic fixing seat 8 during installation and removal. At the same time, the elasticity of the elastic fixing seat 8 itself is used to support the resistor. The connection between the resistor 7 and the multilayer circuit board is adjusted according to the requirements, and the working state of the resistor 7 is adjusted.

Claims

1. A high-precision impedance multilayer circuit board, comprising a circuit substrate (1) composed of multiple conductive layers and insulating layers, wherein a control chip and several electronic components are fixedly mounted inside the circuit substrate (1), characterized in that: The circuit board (1) is provided with a detection circuit (2) located at the input and output ends of the circuit board. The detection circuit (2) is electrically connected to a detection element (3) for detecting the impedance of the circuit board. The two ends of the detection circuit (2) are provided with a connection control seat (4) for controlling its on / off state. The connection control seat (4) is fixedly installed with a low-resistance conductor (5) for conducting electricity. The detection element (3) is connected to a control chip. The control chip is connected to a pressing piece (6) for pressing. One end of the pressing piece (6) is attached to a resistor (7) for adjusting the impedance of the circuit board. One end of the resistor (7) is fixedly installed with a rotatable elastic fixing seat (8).

2. The high-precision impedance multilayer circuit board as described in claim 1, characterized in that: The circuit board (1) has conductive lines inside, and the control chip and several electronic components are connected through the conductive lines. The detection circuit (2) is located on one side of the conductive lines.

3. A high-precision impedance multilayer circuit board as described in claim 2, characterized in that: The detection element (3) is fixedly installed at one end of the circuit board (1), and the detection element (3) is connected to the control chip via signal.

4. A high-precision impedance multilayer circuit board as described in claim 3, characterized in that: The communication control base (4) is fixedly installed at both ends of the circuit board (1), and the interior of the communication control base (4) is provided with a movable groove to accommodate a low-resistance conductor (5).

5. A high-precision impedance multilayer circuit board as described in claim 4, characterized in that: The low-resistance conductor (5) includes an electric drive rod (51) connected to the control chip signal and a conductive sheet (52) connecting the conductive line and the detection circuit (2). The electric drive rod (51) is fixedly installed inside the control base (4), and a conductive sheet (52) that moves inside the control base (4) is fixedly installed at one end of the electric drive rod (51).

6. A high-precision impedance multilayer circuit board as described in claim 5, characterized in that: The pressing piece (6) includes an electric telescopic rod (61) connected to the control chip signal and a pressure sleeve (62) for pressing. The electric telescopic rod (61) is fixedly installed at one end of the circuit board (1). The pressure sleeve (62) for pressing the resistor (7) is fixedly installed at one end of the electric telescopic rod (61). An elastic rubber ring (9) for protection is fixedly installed at one end of the pressure sleeve (62). The elastic rubber ring (9) and the circuit board (1) are fixedly installed. A movable locking block (10) for limiting the elastic fixing seat (8) is provided at one end of the pressure sleeve (62).

7. A high-precision impedance multilayer circuit board as described in claim 6, characterized in that: One end of the elastic fixing seat (8) is provided with a boss (11) for limiting its position. The elastic fixing seat (8) is rotatably connected to the inside of the circuit board (1). The resistor (7) is fixedly installed inside the elastic fixing seat (8).

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