Line loss measuring device and system

Abstract

The invention provides a line loss measuring device and system which are used for measuring the line loss value of a first cable connected to the output end of external equipment, and the input end of the external equipment is connected with a second cable with known line loss. The line loss measuring device comprises a shell, an execution switch module and a measurement control module. A plurality of connecting ports are uniformly distributed on the shell; the execution switch module is arranged in the shell, is electrically connected with each connection port in the plurality of connection ports, and is used for transmitting the transmission loss of the first cable from the output end of the external equipment to each connection port to the measurement control module; and the measurement control module is used for measuring a line loss value according to the transmission loss, and transmitting the line loss value to the input end of external equipment through the execution switch module, each connection port and the second cable in sequence, so as to solve the problems that an existing line loss measurement device is large in size and cannot make full use of the whole device; the portability is poor; and the performance utilization rate is low.

Description

Technical Field

[0001] The present invention belongs to the technical field of line loss measurement, and more specifically, relates to a line loss measurement device and system. Background Art

[0002] Line loss refers to the loss of electric energy during signal transmission due to resistance heat loss, induction electromagnetic wave loss, and capacitive current loss caused by current passing through cables. Cables are an important medium for connecting different external devices, and their line loss directly affects the quality and stability of signal transmission. Therefore, before using external devices that need to use cables for signal transmission, it is usually necessary to measure the line loss of the cables connected to their output ends to ensure the quality of signal transmission.

[0003] A common method for measuring line loss of external equipment is to connect a cable with known line loss to the input end of the external equipment, then connect the cable to be measured and the cable with known line loss to a line loss measuring device, measure the line loss value of the cable to be measured by the line loss measuring device, and then transmit the line loss value to the external equipment through the cable with known line loss, so that the external equipment can perform corresponding electrical energy compensation on the cable at its output end in subsequent output.

[0004] However, in pursuit of versatility, existing line loss measuring devices are designed by integrating multiple functional components. This design not only increases the size of existing line loss measuring devices, increases design costs, and reduces portability, but also results in some missing functions due to the complexity of their structure. Problems such as vacant connection ports, a single connection port that can only be used for measurement or output, increased wiring workload, and redundant functional components occur, making it impossible to fully utilize the entire device, greatly reducing its performance utilization. In addition, the various functional components of existing line loss measuring devices are all built-in, which also brings inconvenience to subsequent maintenance. Therefore, how to design a line loss measuring device that is portable and has high performance utilization has become a problem that needs to be solved urgently by those skilled in the art. Summary of the invention

[0005] The purpose of the present invention is to solve the problems of poor portability and low performance utilization of the existing line loss measuring device due to its large size and inability to fully utilize the entire device.

[0006] In order to achieve the above object, the present invention provides a line loss measurement device and system.

[0007] According to a first aspect of the present invention, there is provided a line loss measuring device for measuring a line loss value of a first cable connected to an output terminal of an external device, wherein an input terminal of the external device is connected to a second cable with a known line loss;

[0008] The line loss measuring device comprises a housing, an execution switch module and a measurement control module;

[0009] A plurality of connection ports are evenly distributed on the housing;

[0010] The execution switch module is disposed in the housing and is electrically connected to each of the plurality of connection ports, and is used to transmit the transmission loss of the first cable from the output end of the external device to each of the connection ports to the measurement control module;

[0011] The measurement control module is used to measure the line loss value according to the transmission loss, and transmit the line loss value to the input end of the external device through the execution switch module, each of the connection ports and the second cable in sequence.

[0012] Optionally, the execution switch module includes a switch matrix unit, and each switch in the switch matrix unit can be electrically connected to the first cable or the second cable through each of the connection ports.

[0013] Optionally, the execution switch module includes a first switch unit and a second switch unit, and the measurement control module can receive the transmission loss through the first switch unit and output the line loss value through the second switch unit.

[0014] or,

[0015] The transmission loss is received through the second switch unit, and the line loss value is output through the first switch unit.

[0016] Optionally, the execution switch module includes a switch matrix unit and a first switch unit and a second switch unit arranged on both sides of the switch matrix unit, and the measurement control module can receive the transmission loss input from the first switch unit through the switch matrix unit, and output the line loss value to the second switch unit.

[0017] or,

[0018] The transmission loss input from the second switch unit is received, and the line loss value is output to the first switch unit.

[0019] Optionally, the switch matrix unit is a 6*6 switch matrix.

[0020] Optionally, the first switch unit and the second switch unit are an SP8T switch and an SP12T switch respectively.

[0021] Optionally, an additional measuring module for measuring the first cable is provided at the lower end of the execution switch module.

[0022] Optionally, a detachable part for inspecting the additional measurement module is provided on the housing.

[0023] Optionally, the additional measurement module includes a power measurement unit and a noise measurement unit, and both the power measurement unit and the noise measurement unit are electrically connected to the measurement control module and can be connected to the first cable through the detachable part.

[0024] According to a second aspect of the present invention, there is further provided a line loss measurement system, comprising any one of the above-mentioned line loss measurement devices, the line loss measurement system further comprising:

[0025] The S parameter calibration module is used to calibrate the line loss value.

[0026] The beneficial effects of the present invention are:

[0027] The line loss measuring device proposed in the present invention is used to transmit the transmission loss of the first cable from the output end of the external device to each connection port to the measurement control module by arranging a number of connection ports that are evenly distributed on the shell, and arranging an execution switch module in the shell, and making the execution switch module electrically connected to each of the several connection ports, and then the line loss value measured by the measurement control module is set to be able to be transmitted to the input end of the external device through the execution switch module, each connection port and the second cable in sequence. Compared with the existing line loss measuring device, each connection port of the present invention has the function of measurement and output, so that when the external device is connected to each connection port through a cable, the cable can be used for both measurement and output, so that the wiring workload of the line loss measurement is greatly reduced, and the performance utilization rate of the line loss measuring device is improved. In addition, due to the reasonable arrangement of various functional components, the volume of the line loss measuring device is reduced, and it is more convenient.

[0028] Furthermore, the present invention can facilitate maintenance of the additional measurement module by providing a detachable portion on the shell, and at the same time, it can also enable external equipment to be directly connected to the additional measurement module through a cable, thereby reducing connection loss and fully utilizing the additional measurement module.

[0029] From the above content, it can be seen that the technical solution of the present invention can effectively solve the problems of poor portability and low performance utilization of the existing line loss measuring device due to its large size and inability to fully utilize the entire device.

[0030] Other features and advantages of the present invention will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The present invention may be better understood by referring to the following description taken in conjunction with the accompanying drawings, in which the same or similar reference numerals are used throughout the drawings to represent the same or similar components.

[0032] Figure 1 A cross-sectional view of a line loss measuring device at a first viewing angle according to a first specific embodiment of the present invention is shown;

[0033] Figure 2 A cross-sectional view of a line loss measuring device at a second viewing angle according to a first specific embodiment of the present invention is shown;

[0034] Figure 3 A cross-sectional view of a line loss measuring device according to a second specific embodiment of the present invention is shown;

[0035] Figure 4 A cross-sectional view of a line loss measuring device according to a third specific embodiment of the present invention is shown;

[0036] Figure 5 A schematic structural diagram of a line loss measuring device at a first viewing angle according to an embodiment of the present invention is shown;

[0037] Figure 6 A schematic structural diagram of a line loss measuring device under a second viewing angle according to an embodiment of the present invention is shown;

[0038] Figure 7 A principle block diagram of a line loss measurement system according to an embodiment of the present invention is shown. Description of the drawings:

[0040] 1- housing;

[0041] 2- Measurement control module;

[0042] 3- Connection port;

[0043] 4-layer board;

[0044] 5- Power measurement unit;

[0045] 6- Noise measurement unit;

[0046] 7-Active board;

[0047] 8- switch matrix unit;

[0048] 9-a first switch unit;

[0049] 10- a second switch unit;

[0050] 11-Cooling fan. DETAILED DESCRIPTION

[0051] In order to enable those skilled in the art to more fully understand the technical solution of the present invention, the exemplary embodiments of the present invention will be described in more comprehensive and detailed in conjunction with the accompanying drawings below. Obviously, the one or more embodiments of the present invention described below are only one or more of the specific ways in which the technical solution of the present invention can be implemented, and are not exhaustive. It should be understood that other ways belonging to a general inventive concept can be used to implement the technical solution of the present invention, and should not be limited by the exemplary embodiments described. Based on one or more embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without making creative work should fall within the scope of protection of the present invention.

[0052] Example: Figure 1 A cross-sectional view of a line loss measuring device at a first viewing angle according to a first specific embodiment of the present invention is shown; Figure 2 A cross-sectional view of a line loss measuring device at a second viewing angle according to a first specific embodiment of the present invention is shown; Figure 3 A cross-sectional view of a line loss measuring device according to a second specific embodiment of the present invention is shown; Figure 4 A cross-sectional view of a line loss measuring device according to a third specific embodiment of the present invention is shown; Figure 5 A schematic structural diagram of a line loss measuring device at a first viewing angle according to an embodiment of the present invention is shown; Figure 6 A schematic structural diagram of a line loss measuring device at a second viewing angle according to an embodiment of the present invention is shown.

[0053] Reference Figure 1-6 , an embodiment of the present invention provides a line loss measuring device for measuring a line loss value of a first cable connected to an output end of an external device, wherein an input end of the external device is connected to a second cable with a known line loss;

[0054] The line loss measuring device comprises a housing 1, an execution switch module and a measurement control module 2;

[0055] A number of connection ports 3 are evenly distributed on the housing 1;

[0056] The execution switch module is disposed in the housing 1 and is electrically connected to each of the plurality of connection ports 3, and is used to transmit the transmission loss of the first cable from the output end of the external device to each connection port 3 to the measurement control module 2;

[0057] The measurement control module 2 is used to measure the line loss value according to the transmission loss, and transmit the line loss value to the input end of the external device through the execution switch module, each connection port 3 and the second cable in sequence.

[0058] In a specific embodiment, the housing 1 is a rectangular structure made of metal aluminum.

[0059] In a specific embodiment, 24 connection ports 3 are evenly distributed on the upper surface of the housing 1 .

[0060] In a specific embodiment, a layer plate 4 for placing the execution switch module is disposed in the housing 1 .

[0061] In one embodiment, an additional measuring module for measuring the first cable is disposed at the lower end of the execution switch module.

[0062] In one embodiment, a detachable portion for inspecting the additional measurement module is provided on the housing 1 .

[0063] In a specific embodiment, the additional measurement module includes a power measurement unit 5 and a noise measurement unit 6, both of which are electrically connected to the measurement control module 2 and can be connected to the first cable through a detachable portion. The power measurement unit is used to measure the power of the transmission loss, and the noise measurement unit is used to generate a noise signal with a power level of a specific frequency to assist in measuring the transmission loss.

[0064] In a specific embodiment, the detachable portion includes a movable plate 7 connected to the wall of the housing 1 .

[0065] Specifically, the additional measurement module is arranged near the inner wall of the housing, and the movable plate can be connected to the corresponding inner wall by a connection method such as hinge or snap-fit, so as to facilitate the maintenance of the additional measurement module. When it is necessary to directly connect the external device to the power measurement unit through a cable, it can also be achieved by moving the movable plate. In addition, according to actual application requirements, functional devices such as hubs can be added to the setting area of ​​the additional test module to achieve flexible adjustment of the number and type of additional test modules.

[0066] The execution switch module of the present invention has the following three specific embodiments:

[0067] like Figure 1 and 2 As shown, in a first specific embodiment, the execution switch module includes a switch matrix unit 8 , and each switch in the switch matrix unit 1 can be electrically connected to the first cable or the second cable through each connection port 3 .

[0068] In one embodiment, the switch matrix unit 4 is a 6*6 switch matrix.

[0069] Specifically, each switch in the 6*6 switch matrix can be interconnected, so that the transmission loss transmitted from each connection port to the 6*6 switch matrix can be transmitted to the measurement control module through the corresponding input switch, and the line loss value can be output to the second cable through the corresponding output switch, thereby realizing efficient transmission of the transmission loss.

[0070] like Figure 3 As shown, in the second specific embodiment, the execution switch module includes a first switch unit 9 and a second switch unit 10, and the measurement control module 2 can receive the transmission loss through the first switch unit 9 and output the line loss value through the second switch unit 10.

[0071] or,

[0072] The transmission loss is received through the second switch unit 10 , and the line loss value is output through the first switch unit 9 .

[0073] In one embodiment, the first switch unit 9 and the second switch unit 10 are a SP8T switch and a SP12T switch respectively.

[0074] Specifically, only one switch among the multiple switches in the first switch unit and the second switch unit can be interconnected with other switches. Therefore, when the transmission loss is transmitted to the interconnected switch of the first switch unit, the interconnected switch selects the corresponding input switch, which is then transmitted to the measurement control module by the input switch. After measurement, the interconnected switch of the second switch unit selects the corresponding output switch to output the line loss value. The same is true when the transmission loss is transmitted to the interconnected switch of the second switch unit. Both can be used as input or output media during actual measurement operations, which can effectively improve the performance utilization of the line loss measurement device.

[0075] like Figure 4 As shown, in the third specific embodiment, the execution switch module includes a switch matrix unit 8 and a first switch unit 9 and a second switch unit 10 arranged on both sides of the switch matrix unit 8. The measurement control module 2 can receive the transmission loss input from the first switch unit 9 through the switch matrix unit 8, and output the line loss value to the second switch unit 10.

[0076] or,

[0077] The transmission loss input from the second switch unit 10 is received, and the line loss value is output to the first switch unit 9 .

[0078] Specifically, the switch matrix unit is used to connect the additional measurement module. When the transmission loss is transmitted to the intercommunication switch of the first switch unit, the intercommunication switch selects the corresponding input switch, inputs the transmission loss into the switch matrix unit, and then the switch matrix unit inputs the measurement control module and / or the additional measurement module, and outputs the measured line loss value to the intercommunication switch of the second switch unit. Finally, the intercommunication switch of the second switch unit selects the corresponding output switch to output the line loss value. The same applies when the transmission loss is transmitted to the intercommunication switch of the first switch unit.

[0079] In one embodiment, the measurement control module 2 includes a measurement control unit and a power supply control unit.

[0080] In a specific embodiment, the measurement control unit is an LC300 control board, which can send instructions to the execution switch module and the additional measurement module to control their respective states and functions.

[0081] Specifically, the power control unit can provide 12V and 24V voltages to the line loss measuring device as needed, and can additionally provide 28V, 5V and 3.3V voltages to the LC300 control board.

[0082] In one embodiment, a cooling fan 11 for dissipating heat from the measurement control module 2 is disposed in the housing 1 .

[0083] When the line loss measuring device of the present invention is in use, first, an operator can insert the first cable and the second cable into the input end and the output end of the external device respectively, then, connect the other ends of the first cable and the second cable to the connection port on the shell, and use a USB transmission cable to connect the measurement control module to the control module in the external device, and finally, send instructions to the measurement control module through the control module, so that the line loss measuring device can be operated to measure the line loss value of the first cable.

[0084] The line loss measuring device proposed in the present invention is used to transmit the transmission loss of the first cable from the output end of the external device to each connection port to the measurement control module by arranging several connection ports evenly distributed on the housing, arranging an execution switch module in the housing, and making the execution switch module electrically connected to each connection port of the several connection ports, and then the line loss value measured by the measurement control module is set to be able to be transmitted to the input end of the external device through the execution switch module, each connection port and the second cable in sequence. Each connection port has the function of measurement and output, so that when the external device is connected to each connection port through a cable, the cable can be used for both measurement and output, so that the wiring workload of the line loss measurement is greatly reduced, and the performance utilization rate of the line loss measuring device is improved.

[0085] Furthermore, the present invention can facilitate the maintenance of the additional measurement module by providing a detachable part on the shell. At the same time, it also enables external equipment to be directly connected to the additional measurement module through a cable, thereby reducing connection loss, improving measurement accuracy, and fully utilizing the additional measurement module.

[0086] Therefore, compared with the existing line loss measuring device, the line loss measuring device of the present invention has a high performance utilization rate, and due to the reasonable arrangement of various functional components, the volume of the line loss measuring device is reduced and the convenience is higher.

[0087] Figure 7 A principle block diagram of a line loss measurement system according to an embodiment of the present invention is shown.

[0088] Accordingly, if Figure 7 As shown, this embodiment further provides a line loss measurement system, including any one of the above-mentioned line loss measurement devices, and the line loss measurement system further includes:

[0089] The S parameter calibration module is used to calibrate the line loss value.

[0090] In one embodiment, the S-parameter calibration module is three mechanical calibration components.

[0091] In a specific embodiment, the models of the three mechanical calibration parts are all 85033E / F.

[0092] Specifically, three mechanical calibration parts are connected to three connection ports respectively. The three mechanical calibration parts help operators determine the indication error of the line loss measuring device by providing a set of known standard values, thereby ensuring the accuracy of the line loss measurement results. These standard values ​​usually include open circuit, short circuit and load. These standard parts simulate various conditions that may be encountered in the actual measurement environment, making the calibration process closer to the actual usage. By comparing with these known standard values, the accuracy of the line loss measuring device can be evaluated, and the calibration of the line loss measuring device can be adjusted to ensure that the error between its measurement results and the true value is within an acceptable range.

[0093] In addition, regular calibration using mechanical calibration parts can maintain the service life of the line loss measurement device, avoid irreversible damage, and ultimately protect the line loss measurement device from damage.

[0094] Compared with the existing line loss measuring device which integrates the S parameter module inside the device, the line loss measuring system of the present invention adopts the method of externalizing the S parameter, which can reduce the volume of the line loss measuring device, selectively access the S parameter module, and has higher flexibility.

[0095] Although one or more embodiments of the present invention are described above, it should be known to those skilled in the art that the present invention can be implemented in any other form without departing from its subject matter and scope. Therefore, the embodiments described above are illustrative rather than restrictive, and many modifications and substitutions are obvious to those skilled in the art without departing from the spirit and scope of the present invention as defined in the appended claims.

Claims

1. A line loss measuring device, characterized in that: Used to measure the line loss value of a first cable connected to an output end of an external device, wherein an input end of the external device is connected to a second cable with known line loss; The line loss measuring device comprises a housing, an execution switch module and a measurement control module; A plurality of connection ports are evenly distributed on the housing; The execution switch module is disposed in the housing and is electrically connected to each of the plurality of connection ports, and is used to transmit the transmission loss of the first cable from the output end of the external device to each of the connection ports to the measurement control module; The measurement control module is used to measure the line loss value according to the transmission loss, and transmit the line loss value to the input end of the external device through the execution switch module, each of the connection ports and the second cable in sequence.

2. The line loss measuring device according to claim 1, characterized in that: The execution switch module includes a switch matrix unit, and each switch in the switch matrix unit can be electrically connected to the first cable or the second cable through each of the connection ports.

3. The line loss measuring device according to claim 1, characterized in that: The execution switch module includes a first switch unit and a second switch unit, and the measurement control module can receive the transmission loss through the first switch unit and output the line loss value through the second switch unit. or, The transmission loss is received through the second switch unit, and the line loss value is output through the first switch unit.

4. The line loss measuring device according to claim 1, characterized in that: The execution switch module includes a switch matrix unit and a first switch unit and a second switch unit arranged on both sides of the switch matrix unit. The measurement control module can receive the transmission loss input from the first switch unit through the switch matrix unit, and output the line loss value to the second switch unit. or, The transmission loss input from the second switch unit is received, and the line loss value is output to the first switch unit.

5. The line loss measuring device according to claim 2 or 4, characterized in that: The switch matrix unit is a 6*6 switch matrix.

6. The line loss measuring device according to claim 3 or 4, characterized in that: The first switch unit and the second switch unit are an SP8T switch and an SP12T switch respectively.

7. The line loss measuring device according to claim 1, characterized in that: An additional measuring module for measuring the first cable is disposed at the lower end of the execution switch module.

8. The line loss measuring device according to claim 7, characterized in that: The housing is provided with a detachable part for inspecting the additional measurement module.

9. The line loss measuring device according to claim 8, characterized in that: The additional measurement module includes a power measurement unit and a noise measurement unit. Both the power measurement unit and the noise measurement unit are electrically connected to the measurement control module and can be connected to the first cable through the detachable portion.

10. A line loss measurement system, characterized in that: The line loss measurement system comprises the line loss measurement device according to any one of claims 1 to 9, and further comprises: The S parameter calibration module is used to calibrate the line loss value.

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