Data acquisition station
By setting a misaligned connection path in the multi-stage dock of the data acquisition station and coupling the signal driving module, the problem of poor communication performance between the host and the multi-stage dock is solved, and signal quality is improved and communication performance is improved.
Patent Information
- Application Number
- CN202510143593.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-10
- Publication Date
- 2025-04-15
AI Technical Summary
In existing data acquisition stations, the communication performance between the host and the multi-stage docking station is poor, resulting in signal attenuation, interference and distortion, affecting the stability of data transmission.
A data acquisition station is designed to achieve signal equalization, pre-emphasis, de-emphasis and retiming processing by setting misalignment connection paths in each stage of docking and coupling signal driving modules, such as USB re-drivers and USB re-timers.
Through the use of the signal driving module, the signal quality can be enhanced, signal attenuation, interference and distortion can be reduced, and communication performance between the host and the multi-stage dock can be improved.
Smart Images
Figure CN119829505A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of data collection, and in particular to a data collection station. Background Art
[0002] In a related technology, a data acquisition station provides services such as charging and data collection for peripheral data acquisition devices. The data acquisition station includes a host and a multi-level expansion dock cascaded with the host, the multi-level expansion dock is coupled to the host in a cascaded manner, and each expansion dock is provided with a plurality of expansion compartments, which are used to provide services such as plug-in charging and data uploading for the corresponding data acquisition devices.
[0003] The host is used to collect data uploaded by each expansion dock, receive reported data from multiple data acquisition devices through the multi-level expansion dock, and control the working parameters of the expansion dock.
[0004] The use of a multi-level expansion dock can enable more data acquisition devices to transmit data, but it is also noted that as the cascade path increases, the longer the wiring distance is from the host, and signal attenuation occurs after long wiring, resulting in signal distortion, affecting the communication performance between the host and the multi-level expansion dock.
[0005] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present invention, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Summary of the invention
[0006] In view of the problems in the prior art, the purpose of the present invention is to provide a data acquisition station, which overcomes the difficulties of the prior art and can solve the problem of poor communication performance between a host and a multi-level expansion dock.
[0007] A first aspect of the present disclosure provides a data collection station, which includes a host and a multi-level expansion dock;
[0008] The host is configured with a plurality of host interfaces corresponding one-to-one to the multi-level expansion docks;
[0009] Each level of the expansion dock is configured with a plurality of data interface groups corresponding to the number of the plurality of host interfaces, each of the data interface groups includes an input interface and an output interface, an external device interface is configured among the plurality of input interfaces of the plurality of data interface groups, and an idle output interface is configured among the plurality of output interfaces;
[0010] The host and the first-level expansion dock are connected one by one through the plurality of host interfaces and the plurality of input interfaces in the plurality of data interface groups, and the two adjacent expansion docks are connected in sequence through the corresponding input interfaces and output interfaces;
[0011] The input interfaces and output interfaces in the plurality of data interface groups, except the external device interface and the idle output interface, are staggeredly connected one by one to form staggered connection paths, so that the external device interface is coupled to the corresponding host interface through the staggered connection paths;
[0012] Among them, when the transmission path of any one of the external device interfaces coupled to the corresponding host interface includes at least one of the staggered connection paths, a signal driving module is coupled between the input interface and the output interface of at least part of the staggered connection paths in the transmission path.
[0013] In one embodiment, the multi-level expansion docks have the same structure.
[0014] In one embodiment, when the data acquisition station includes at least three levels of the expansion dock, when the transmission path of any one of the external device interfaces coupled to the corresponding host interface includes at least two staggered connection paths, each two adjacent staggered connection paths in the transmission path are respectively configured to be coupled with the signal driving module and uncoupled with the signal driving module.
[0015] In one embodiment, the external device interface and the idle output interface in each level of the expansion dock are respectively located at the first address position and the last address position of the plurality of data interface groups along the same arrangement direction.
[0016] In one embodiment, the input interfaces and output interfaces other than the external device interface and the idle output interface in the plurality of data interface groups are staggeredly connected one by one to form a staggered connection path, including:
[0017] Each of the input interfaces except the external device interface and the idle output interface in the plurality of data interface groups is staggeredly connected to an output interface of a previous address position adjacent to the arrangement direction.
[0018] In one embodiment, in each of the expansion docks, along the arrangement direction, starting from the external device interface as the first address bit, the signal driving module is coupled in the staggered connection path where the input interface of the even-numbered address bits is located.
[0019] In one embodiment, when the data acquisition station includes at most three of the expansion docks, the signal driving module uses a USB redriver.
[0020] In one embodiment, when the data acquisition station includes at least four expansion docks, in each of the expansion docks, the staggered connection path where the input interface of the second address bit is located uses a USB redriver, and starting from the staggered connection path where the input interface of the fourth address bit is located, the signal driving module uses a USB retimer.
[0021] In one embodiment, the host interface, input interface and output interface are all USB 3.0 interfaces.
[0022] In one embodiment, the multiple host interfaces are integrated in a first high-speed connector, the input interfaces in the multiple data interface groups are integrated in a second high-speed connector, and the output interfaces in the multiple data interface groups are integrated in a third high-speed connector. The host and the first-level expansion dock are aligningly connected via the first high-speed connector and the second high-speed connector, and the two adjacent levels of the expansion docks are aligningly connected via the second high-speed connector and the third high-speed connector.
[0023] The data collection station provided by the embodiment of the present disclosure has the following beneficial effects:
[0024] In this embodiment, in addition to the external device interface in the first-level expansion dock being directly connected to the host interface in the host, the staggered connection path in each level of the expansion dock is used to provide a signal transmission path for the subsequent level of the expansion dock to be coupled to the corresponding host interface, and the expansion docks at other levels are coupled to the corresponding host interfaces through the staggered connection path L in the previous level of the expansion dock.
[0025] Therefore, two adjacent expansion docks are connected in alignment, and each expansion dock has a staggered connection path set inside so that the external device interface in the latter expansion dock is actually coupled to the corresponding host interface with other input interfaces of corresponding address bits in the former expansion dock.
[0026] In this embodiment, by coupling the signal driving module in the staggered connection path, the transmission signal can be equalized, pre-emphasized, de-emphasized and retiming can be performed to achieve signal enhancement and compensation, thereby reducing the impact of signal attenuation, interference and distortion on communication performance.
[0027] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS
[0028] Other features, objectives and advantages of the present invention will become more apparent from a reading of the detailed description of non-limiting embodiments made with reference to the following accompanying drawings.
[0029] Figure 1 A structural diagram of a data acquisition station provided in an embodiment of the present disclosure.
[0030] Figure 2 A schematic diagram of the internal structure of a host and an expansion dock in a data acquisition station provided in an embodiment of the present disclosure.
[0031] Figure 3A schematic diagram of the internal structure and cascade relationship of a host and an expansion dock in a data acquisition station provided in an embodiment of the present disclosure.
[0032] Figure 4 exhibit Figure 3 The module schematic diagram of the signal driver module in the data acquisition station shown in the figure uses USB Redriver.
[0033] Figure 5 exhibit Figure 3 The module schematic diagram of the signal driver module in the data acquisition station shown uses a USB Retimer.
[0034] Figure 6 A schematic diagram showing the internal structure and cascade relationship of a host and an expansion dock in a data acquisition station according to another embodiment of the present disclosure. DETAILED DESCRIPTION
[0035] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that the disclosure will be more comprehensive and complete and to fully convey the concepts of the example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
[0036] In addition, the accompanying drawings are only schematic illustrations of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the figures represent the same or similar parts, and their repeated description will be omitted. Some of the block diagrams shown in the accompanying drawings are functional entities and do not necessarily correspond to physically or logically independent entities. These functional entities can be implemented in software form, or implemented in one or more hardware modules or integrated circuits, or implemented in different networks and / or processor devices and / or microcontroller devices.
[0037] In addition, the concepts such as "first" and "second" mentioned in the present disclosure are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.
[0038] The disclosed embodiment provides a data collection station for solving the technical problems of signal distortion and communication performance degradation caused by a multi-level expansion dock.
[0039] like Figure 1As shown, the data acquisition station provided by the embodiment of the present disclosure includes a host 1 and a multi-level expansion dock 2, which exemplarily includes a first-level expansion dock 2a, a second-level expansion dock 2b, and a third-level expansion dock 2c. The host 1 is directly cascaded with the first-level expansion dock 2a, and the first-level expansion dock 2a, the second-level expansion dock 2b, and the third-level expansion dock 2c are cascaded in sequence.
[0040] refer to Figure 2 The host 1 is configured with a multi-level expansion dock 2 (such as Figure 1 The host 1 includes a plurality of host interfaces A corresponding to each other. For example, the plurality of host interfaces A include a first host interface A1, a second host interface A2 and a third host interface A3, which are arranged in sequence along an arrangement direction HH'. The host 1 includes a control module 11, and the control module 11 is connected to the plurality of host interfaces A. The control module 11 uses a central processing unit (CPU) or a single-chip microcomputer.
[0041] Each level of the expansion dock 2 is configured with a plurality of data interface groups B corresponding to the number of the plurality of host interfaces A. Exemplarily, each level of the expansion dock 2 is configured with a first data interface group B1, a second data interface group B2, and a third data interface group B3. Each of the data interface groups B includes an input interface and an output interface. Exemplarily, the first data interface group B1 includes a first input interface B11 and a first output interface B12, the second data interface group B2 includes a second input interface B21 and a second output interface B22, and the third data interface group B3 includes a third input interface B31 and a third output interface B32.
[0042] Combination Figure 3 As shown, an external device interface Bm is configured in the multiple input interfaces (such as the first input interface B11, the second input interface B21 and the third input interface B31) of the multiple data interface groups B, and an idle output interface Bn is configured in the multiple output interfaces (such as the first output interface B12, the second output interface B22 and the third output interface B32). For example, in each level of the expansion dock 2, the first input interface B11 (such as Figure 2The third output interface B32 in the third data interface group B3 is configured as an external device interface Bm, and the third output interface B32 in the third data interface group B3 is configured as an idle output interface Bn. The external device interface Bm is coupled to the interface expansion module 5, and the interface expansion module 5 is used to connect external devices. Each interface expansion module 5 can expand multiple device interfaces, and the device interfaces expanded by the interface expansion module 5 will be connected to the expansion compartment for connecting external devices. When an expansion dock 2 includes multiple expansion compartments, each interface expansion module 5 can expand a number of device interfaces corresponding to the corresponding expansion compartment, and the device interface is connected and located in the expansion compartment for connecting the corresponding external device in this expansion compartment.
[0043] The host 1 and the first-level expansion dock 2a are connected one by one via a plurality of host interfaces A and a plurality of input interfaces (such as the first input interface B11, the second input interface B21 and the third input interface B31) in the plurality of data interface groups B. Exemplarily, the first host interface A1, the second host interface A2 and the third host interface A3 are connected in sequence with the first input interface B11, the second input interface B21 and the third input interface B31 along the arrangement direction HH'.
[0044] The two adjacent expansion docks 2 are sequentially connected via corresponding input interfaces and output interfaces. For example, the first output interface B12, the second output interface B22 and the third output interface B32 in the first-level expansion dock 2a are respectively sequentially connected with the first input interface B11, the second input interface B21 and the third input interface B31 in the second-level expansion dock 2b thereafter along the arrangement direction HH'.
[0045] Among them, the input interfaces and output interfaces except the external device interface Bm and the idle output interface Bn in the single data interface group B in each expansion dock are staggeredly connected one by one to form a staggered connection path L, so that the external device interface Bm is coupled to the corresponding host interface A through the staggered connection path L. Exemplarily, in the first-level expansion dock 2a, the second input interface B21 is staggeredly connected to the first output interface B12, and the third input interface B31 is staggeredly connected to the second output interface B22, forming two staggered connection paths L.
[0046] Wherein, when any one of the external device interfaces Bm is coupled to the corresponding host interface A and the transmission path includes at least one of the staggered connection paths L, a signal driving module 3 is coupled between the input interface and the output interface of at least part of the staggered connection paths L in the transmission path. Exemplarily, the external device interface Bm in the second-level expansion dock 2b is coupled to the corresponding second host interface A2, and the transmission path only includes a first staggered connection path L1 in the first-level expansion dock 2a, and the signal driving module 3 is coupled to the first staggered connection path L1. The external device interface Bm in the third-level expansion dock 2c is coupled to the third host interface A3, and the transmission path includes the first staggered connection path L1 in the second-level expansion dock 2b and the third staggered connection path L3 in the first-level expansion dock 2a. At this time, the signal driving module 3 is coupled to the first staggered connection path L1, and the signal driving module 3 is not coupled to the third staggered connection path L3.
[0047] In this embodiment, except that the external device interface Bm in the first-level expansion dock 2a is directly connected to the first host interface A1 in the host 1, the staggered connection path L in each level of the expansion dock 2 is used to provide a signal transmission path for coupling to the corresponding host interface A for the subsequent level of the expansion dock 2, and the expansion docks 2 at other levels are coupled to the corresponding host interface A through the staggered connection path L in the previous level of the expansion dock 2.
[0048] Therefore, two adjacent expansion docks 2 are connected in alignment, and each expansion dock 2 has a staggered connection path L set inside, so that the external device interface Bm in the next expansion dock 2 is actually coupled to the corresponding host interface A with the input interface of the other corresponding address position in the previous expansion dock 2.
[0049] In this embodiment, by coupling the signal driving module 3 in the staggered connection path L, the transmission signal can be equalized, pre-emphasized, de-emphasized and retiming can be performed to achieve signal enhancement and compensation, thereby reducing the impact of signal attenuation, interference and distortion on communication performance.
[0050] In one embodiment, the external device interface Bm is coupled to multiple expansion compartments in the expansion dock 2 through the connection interface expansion module 5, and can be connected to the host 1 through a high-speed bus to achieve fast uploading of audio and video data, fast charging, and updating of external device versions. Among them, the external device can be a law enforcement recorder and other instruments.
[0051] exist Figure 3In the illustrated embodiment, a three-level expansion dock 2 is schematically used to describe the technical solution of this embodiment, which is not a limitation on the number of expansion docks 2, and two or more levels of expansion docks 2 can be provided as needed. In addition, the corresponding quantity mentioned above means that the quantity is equal, so that the external device interface Bm in each expansion dock 2 can be connected to the corresponding host interface A in the host 1.
[0052] In the embodiment of the present disclosure, the structures of the multi-level expansion docks 2 are the same, including the same number of data interface groups B and the same wiring structure. In this way, each expansion dock 2 can be modularly designed, the position of any expansion dock 2 can be adjusted arbitrarily, and the number of expansion docks 2 can be increased or decreased at any position, thereby reducing product costs.
[0053] In the embodiment of the present disclosure, the number of staggered connection paths L in each docking station 2 is one less than the number of docking stations 2. For example, when the number of docking stations 2 is three, the number of staggered connection paths L in each docking station 2 is two.
[0054] In one embodiment, when the data acquisition station includes at least three levels of the expansion dock 2, when any one of the external device interfaces Bm is coupled to the corresponding host interface A in a transmission path including at least two staggered connection paths L, each two adjacent staggered connection paths in the transmission path are respectively configured to be coupled with the signal driving module 3 and not coupled with the signal driving module 3, that is, the signal driving module 3 is coupled only in one of the staggered connection paths L.
[0055] like Figure 2 and Figure 3 As shown, the external device interface Bm in the third-level expansion dock 2c is coupled to the corresponding host interface A through a two-level staggered connection path L, and the signal driving module 3 is coupled only in the first staggered connection path L1 in the second-level expansion dock 2b, and the signal driving module 3 is not coupled in the third staggered connection path L3.
[0056] This is because it is considered that while achieving the desired signal enhancement effect, there is no need to couple more signal driving modules 3 on the path from an external device interface Bm to the corresponding host interface A, so as to reduce costs.
[0057] As an implementation form with the same internal structure of an expansion dock 2, the external device interface Bm and the idle output interface Bn in the multi-level expansion dock 2 are respectively located at the first address position and the last address position of the plurality of data interface groups B along the same arrangement direction HH'. This can reduce the wiring difficulty and avoid cross wiring of the subsequent pairs of data interface groups when they are misaligned.
[0058] Since the external device interface Bm and the idle output interface Bn are respectively located in the data interface group B at both ends along the arrangement direction HH′, the remaining input interfaces and output interfaces can be staggeredly connected in sequence.
[0059] Specifically, the input interfaces and output interfaces other than the external device interface Bm and the idle output interface Bn in the plurality of data interface groups B are staggeredly connected one by one to form a staggered connection path, including:
[0060] Each input interface except the external device interface Bm and the idle output interface Bn in the plurality of data interface groups B is staggeredly connected to an output interface of the previous address position adjacent to the arrangement direction HH′.
[0061] For example, please refer to Figure 3 As described above, except for the external device interface Bm and the idle output interface Bn, the input interfaces and the output interfaces are staggered one by one in an orderly manner to realize signal transmission.
[0062] Thus, in each expansion dock 2, along the arrangement direction HH', starting from the external device interface Bm as the first address bit, the signal driving module 3 is coupled in the staggered connection path L where the input interface of the even address bit is located. For example, in each level of the expansion dock 2, a signal driving module 3 is coupled in the staggered connection path L where the second input interface B21 of the second address bit is located, while a signal driving module 3 is not coupled in the staggered connection path L where the third input interface B31 of the third address bit is located. In this way, the distribution of the staggered connection paths L and the layout of the signal driving module 3 in each expansion dock 2 are the same, and this can be achieved. When any one of the external device interfaces Bm is coupled to the corresponding host interface A and the transmission path includes at least two staggered connection paths L, each two adjacent staggered connection paths L in the at least two staggered connection paths L are respectively configured to be coupled with the signal driving module 3 and not coupled with the signal driving module 3. That is to say, when any one of the external device interfaces Bm is connected to multiple continuous staggered connection paths L, the signal driving module 3 will not be set in both of the two continuous staggered connection paths L.
[0063] At the same time, by staggered coupling of the signal driving modules 3 in the multiple staggered connection paths arranged along the arrangement direction HH' in each expansion dock 2, not only the internal structure of each expansion dock 2 is made the same, but also when any external device interface Bm is connected to multiple continuous staggered connection paths L, the signal driving modules 3 will not be set in two continuous staggered connection paths L.
[0064] In another embodiment, starting from the external device interface as the first address bit, the signal driving module may be coupled in the staggered connection path where the input interface of the odd address bits is located.
[0065] In the embodiments of the present disclosure, Figure 2 and Figure 3 As shown, multiple host interfaces A are integrated in the first high-speed connector 10, multiple input interfaces in the data interface group B are integrated in the second high-speed connector 20, and multiple output interfaces in the data interface group B are integrated in the third high-speed connector 30. The host 1 and the first-level expansion dock 2a are aligned and plugged together through the first high-speed connector 10 and the second high-speed connector 20, and the adjacent two-level expansion docks 2 are aligned and plugged together through the second high-speed connector 20 and the third high-speed connector 30.
[0066] Hot plugging is achieved through the high-speed connector, which facilitates the connection and separation operations between the host 1 and the first-level expansion dock 2a and between the multi-level expansion docks 2.
[0067] In the embodiment of the present disclosure, the input interface and the output interface in each host interface A and data interface group B may use a USB interface. Specifically, the USB interface may be USB 3.0 or above with a high transmission speed.
[0068] In the embodiment of the present disclosure, each signal driving module 3 may use a USB redriver (Redriver) or a USB retimer (Retimer).
[0069] Among them, Figure 4 As shown, the USB Redriver includes an equalizer 301, an amplifier 302 and a driver 303, which is a chip for signal enhancement and compensation of a high-speed interface. It mainly compensates and corrects the signal loss on the transmission end and restores the signal integrity on the receiving end through the equalizer 301 and the pre-emphasis control (Pre-Emphasis) technology based on the amplifier 302 and the driver 303. The USB Redriver is a device for enhancing signal quality and improving data transmission reliability.
[0070] like Figure 5 As shown, Figure 4Compared with the USB Redriver shown in FIG. 1 , the USB Retimer adds a clock and data recovery circuit (CDR) 304 between the equalizer 301 and the amplifier 302. The USB Retimer is a signal conditioning chip used for high-speed data transmission, which mainly includes two functions: signal equalization and data clock signal repair. Specifically, the USB Retimer extracts the embedded clock in the input signal through the internal clock and data recovery circuit 304, and retransmits the data using the complete clock signal without attenuation and deformation to form a new copy of the original data signal. In this way, the USB Retimer can effectively remove the jitter of the received signal and reduce the attenuation problem of the signal, thereby improving the signal quality and transmission stability.
[0071] Compared with Retimer, Redriver has a lower cost structure, but Retimer can increase the transmission distance and is more suitable for signal enhancement over longer transmission distances.
[0072] Therefore, in the embodiments of the present disclosure, Figure 3 As shown, when the data acquisition station includes at most three expansion docks 2, the signal driving module 3 uses Redriver. This is because, when the data acquisition station includes three expansion docks 2, the external device interface Bm in the third-level expansion dock 2c is coupled to the corresponding host interface A through a two-level staggered connection path L, and the transmission distance is relatively short. At this time, the signal driving module 3 uses Redriver.
[0073] In another embodiment, when the data acquisition station includes at least four expansion docks, in each expansion dock, the staggered connection path where the input interface of the second address position is located uses a USB redriver, and starting from the staggered connection path where the input interface of the fourth address position is located, the signal driving module uses a USB retimer. In this way, the use of Retimer can achieve long-distance transmission signal enhancement, and the use of Redriver in a short-distance transmission path can reduce costs. This embodiment takes into account both cost and signal enhancement requirements.
[0074] In another implementation manner, all signal driving modules may use Retimer or Redriver, which is not limited here.
[0075] For example, Figure 6As shown, the data acquisition station includes 5-level expansion docks 2, each of which includes a second-level staggered connection path L2 where the input interface at the second address is located and a fourth-level staggered connection path L4 where the input interface at the fourth address is located. Only one first signal driving module 3a is coupled to the path where the second-level expansion dock 2b and the third-level expansion dock 2c are coupled to the corresponding second host interface A2 and third host interface A3, wherein the first signal driving modules 3a are all located on the second-level staggered connection path L2 where the input interface at the second address of the previous-level expansion dock corresponding to the current expansion dock is located, and they all use Redriver. Specifically, the first signal driving module 3a coupled to the path corresponding to the second host interface A2 of the second-level expansion dock 2b is located on the second-position staggered connection path L2 where the input interface of the second address position of the first-level expansion dock 2a belonging to the previous-level expansion dock is located; the first signal driving module 3a coupled to the path corresponding to the second host interface A2 of the third-level expansion dock 2c is located on the second-position staggered connection path L2 where the input interface of the second address position of the second-level expansion dock 2b belonging to the previous-level expansion dock is located. As for the fourth-level expansion dock 2d, the path coupled to the fourth host interface A4 includes the first signal driving module 3a located in the second-position staggered connection path L2 where the input interface of the second address position in the third-level expansion dock 2c is located, and the second signal driving module 3b located in the fourth-position staggered connection path L4 where the input interface of the fourth address position in the first-level expansion dock 2a is located. At this time, the first signal driving module 3a uses a Redriver, and the second signal driving module 3b uses a Retimer to achieve long-distance signal transmission. The path of the fifth-level docking station 2e coupled to the fifth host interface A5 includes a first signal driver module 3a and a second signal driver module 3b, which use Redriver and Retimer respectively. In this embodiment, there are two ways to set the host interface and the interface on the docking station: 1. In order to save costs, the host sets a corresponding number of host interfaces according to the actual number of docking stations. Similarly, each level of docking station will set a corresponding number of data interface groups with the host interface according to the actual number of docking stations. 2. Another way is to reserve the host interface on the host and the data interface group on the docking station in advance in order to facilitate the expansion of multi-level docking stations.
[0076] Referring to the above implementation mode, when the data acquisition station includes 6, 7 or more expansion docks, the layout and selection of the signal driving module on the staggered connection path corresponding to the input interface from the 1st address position to the 5th address position of each expansion dock can refer to Figure 6In combination with the above content, starting from the 5th address bit, a signal driving module is set on the staggered connection path corresponding to the input interface of the subsequent even address bits, and considering that the subsequent staggered connection paths are used for signal transmission on the subsequent expansion dock, in order to obtain a better transmission effect, the corresponding signal driving module is a Retimer.
[0077] Therefore, in the above embodiments, starting from the staggered connection path where the input interface of the 4th address bit is located, the signal driving module uses a USB retimer.
[0078] With reference to the above implementation, not only the internal structure of each expansion dock 2 is the same, but also both signal enhancement and cost reduction can be taken into consideration.
[0079] In this embodiment, taking USB3.0 as an example, the external device interface Bm inside each docking station 2 is located at the first address position, which can ensure that the USB3.0 high-speed signal attenuation is less than 2dB. The signal driver module 3 is placed inside the docking station 2, and the up / downward attenuation is 6dB, and the second high-speed connector 20 where it is located attenuates by 1dB. The total attenuation of the USB3.0 high-speed signal can be calculated as follows:
[0080] On the path from the first-level expansion dock 2a to the first host interface A1, the total signal attenuation is: 1dB+2dB=3dB;
[0081] On the path from the second-level expansion dock 2b to the second host interface A2, the uplink attenuation of the signal driving module 3 is: 1dB+2dB=3dB, and the downlink attenuation to the external device interface Bm is: 6dB+1dB+2dB=9dB;
[0082] On the path from the third-level expansion dock 2c to the third host interface A3, the uplink attenuation of the signal driving module 3 is: 1dB+12dB+1dB+6dB=20dB, and the downlink attenuation to the external device interface Bm is: 6dB+1dB+2dB=9dB;
[0083] On the path from the fourth-level expansion dock 2d to the fourth host interface A4, the uplink attenuation of the first-level signal driving module 31 is 1dB+2dB=3dB, the downlink attenuation from the first-level signal driving module 31 to the second-level signal driving module 32 is 6dB+1dB+12dB+1dB+6dB=26dB, and the downlink attenuation from the second-level signal driving module 32 to the external device interface Bm is 6dB+1dB+2dB=9dB;
[0084] On the path from the fifth-level expansion dock 2e to the fifth host interface A5, the upstream attenuation of the first-level signal driving module 31 is: 1dB+12dB+1dB+6dB=20dB, the downstream attenuation of the first-level signal driving module 31 to the second-level signal driving module 32 is 6dB+1dB+12dB+1dB+6dB=26dB, and the downstream attenuation of the second-level signal driving module 32 to the external device interface Bm is 6dB+1dB+2dB=9dB.
[0085] That is, the attenuation of the line from the first-level signal driver module 31 to the host 1 is 7dB, the attenuation of the line between the two-level signal driver modules 3 is 26dB, and the attenuation of the line from the signal driver module 3 to the external device interface Bm is 9dB. By configuring the signal driver module 3 to enhance the signal by 13dB, the USB3.0 high-speed signal integrity (English full name: Signal Integrity, abbreviation: SI) requirements can be met.
[0086] In the data acquisition station of any of the above implementation modes, long-distance USB3.0 signal transmission and stable and fast data transmission of multiple USB3.0 devices can be achieved, and the data acquisition station can also be backward compatible with USB2.0 interfaces.
[0087] At the same time, the first-level expansion dock 2a controls the position and type of the signal driver module 3 and the wiring distance to ensure that the USB 3.0 high-speed signal quality meets the requirements. The second-level expansion dock 2b and the subsequent expansion docks at other levels enhance the USB 3.0 signal quality to meet the requirements through reasonable cascading methods and the coupling position and type of the signal driver module 3.
[0088] When the data acquisition station contains at least four docking stations, you can refer to Figure 6 The illustrated implementation configures the staggered connection paths and coupled signal driving modules in each docking station, which will not be described in detail herein.
[0089] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the invention disclosed herein. The present disclosure is intended to cover any variations, uses or adaptations of the present disclosure, which follow the general principles of the present disclosure and include common knowledge or customary techniques in the art that are not disclosed in the present disclosure. The description and examples are intended to be exemplary only, and the true scope and spirit of the present disclosure are indicated by the appended claims.
Claims
1. A data collection station, characterized in that: Including a host and a multi-level docking station; The host is configured with a plurality of host interfaces corresponding one-to-one to the multi-level expansion docks; Each level of the expansion dock is configured with a plurality of data interface groups corresponding to the number of the plurality of host interfaces, each of the data interface groups includes an input interface and an output interface, an external device interface is configured among the plurality of input interfaces of the plurality of data interface groups, and an idle output interface is configured among the plurality of output interfaces; The host and the first-level expansion dock are connected one by one through the plurality of host interfaces and the plurality of input interfaces in the plurality of data interface groups, and the two adjacent expansion docks are connected in sequence through the corresponding input interfaces and output interfaces; The input interfaces and output interfaces in the plurality of data interface groups, except the external device interface and the idle output interface, are staggeredly connected one by one to form staggered connection paths, so that the external device interface is coupled to the corresponding host interface through the staggered connection paths; Among them, when the transmission path of any one of the external device interfaces coupled to the corresponding host interface includes at least one of the staggered connection paths, a signal driving module is coupled between the input interface and the output interface of at least part of the staggered connection paths in the transmission path.
2. The data collection station according to claim 1, characterized in that: The structures of the multi-level expansion docks are the same.
3. The data collection station according to claim 2, characterized in that: When the data acquisition station includes at least three levels of the expansion dock, when the transmission path of any one of the external device interfaces coupled to the corresponding host interface includes at least two staggered connection paths, each two adjacent staggered connection paths in the transmission path are respectively configured to be coupled with the signal driving module and uncoupled with the signal driving module.
4. The data collection station according to claim 3, characterized in that: The external device interface and the idle output interface in each level of the expansion dock are respectively located at the first address position and the last address position of the plurality of data interface groups along the same arrangement direction.
5. The data collection station according to claim 4, characterized in that: The input interfaces and output interfaces in the plurality of data interface groups, except the external device interface and the idle output interface, are staggeredly connected one by one to form a staggered connection path, including: Each of the input interfaces except the external device interface and the idle output interface in the plurality of data interface groups is staggeredly connected to an output interface of a previous address position adjacent to the arrangement direction.
6. The data collection station according to claim 5, characterized in that: In each of the expansion docks, along the arrangement direction, starting from the external device interface as the first address bit, the signal driving module is coupled in the staggered connection path where the input interface of the even-numbered address bits is located.
7. The data collection station according to claim 6, characterized in that: When the data acquisition station includes a maximum of three expansion docks, the signal driving module uses a USB redriver.
8. The data collection station according to claim 6, characterized in that: When the data acquisition station includes at least four expansion docks, in each expansion dock, the staggered connection path where the input interface of the second address bit is located uses a USB redriver, and starting from the staggered connection path where the input interface of the fourth address bit is located, the signal driving module uses a USB retimer.
9. The data collection station according to claim 1, characterized in that: The host interface, input interface and output interface are all USB 3.0 interfaces.
10. The data collection station according to claim 1, characterized in that: The multiple host interfaces are integrated in the first high-speed connector, the input interfaces in the multiple data interface groups are integrated in the second high-speed connector, and the output interfaces in the multiple data interface groups are integrated in the third high-speed connector. The host and the first-level expansion dock are aligned and plugged in via the first high-speed connector and the second high-speed connector, and the two adjacent levels of the expansion docks are aligned and plugged in via the second high-speed connector and the third high-speed connector.