CN112291110A - SpaceWire network interface bypass detection device - Google Patents
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Abstract
The invention discloses a SpaceWire network interface bypass detection device.A link signal monitoring module breaks through the traditional monitoring mode that monitoring equipment is inserted after an original link is disconnected, extracts link signals through a branch structure and simultaneously ensures the normal transmission of the link signals, simplifies a SpaceWire link data detection method and improves the monitoring efficiency; the device provides a nondestructive monitoring solution, can realize on-line monitoring and analysis of data flow in the operation process of network nodes, and solves the problem that the network information flow of the whole satellite system is not measurable; the device has good hardware interface expansibility, and the link signal monitoring module supports command configuration monitoring interface gating and is suitable for all SpaceWire interface control modules. The bypass monitoring analyzer can be used as a SpaceWire node to realize plug and play of the test equipment; the combination mode of the link signal monitoring module and the bypass monitoring analyzer in the device is flexible, and diversified detection modes such as full-network multipoint parallel monitoring from single link monitoring can be realized.
Description
Technical Field
The invention belongs to the technical field of information processing, and particularly relates to a SpaceWire network interface bypass detection device.
Background
As a high-speed data bus standard dedicated to a spacecraft, the SpaceWire network is widely applied to a management and transmission system of satellite-borne data by virtue of the characteristics of high communication rate, standard interface, flexible topology and the like. The satellite-borne SpaceWire network generally adopts a route switching type transmission technology, nodes are interconnected through a point-to-point serial communication link or are connected with a router, and various satellite devices can become a node in the network as long as the satellite devices have SpaceWire standard interfaces. The information plane is also transmitted in a point-to-point fashion from the source node to the target node in the form of data packets. Because the quality of the low-voltage differential signal on the SpaceWire link has strict requirements, monitoring equipment cannot be directly connected on the link in an articulated mode, and a data packet cannot be copied in the transmission process, so that the link communication state cannot be tested after the satellite final assembly is integrated. When a network fails, communication is interrupted, a node or a router with the failure in the network cannot be located, and data change during communication interruption cannot be acquired for failure analysis. Along with the design trend of satellite integrated intelligence, more and more load devices use a SpaceWire network for communication, and how to monitor the network operation state in real time and acquire communication data becomes a key technology in the field of satellite-borne data communication at present.
The current monitoring equipment only concerns communication detection between the SpaceWire master node equipment and the SpaceWire slave node equipment, and a SpaceWire bus communication system and monitoring equipment (patent number: CN201611246973.9) thereof are provided by the institute of optical precision machinery and physics of China academy of sciences for recording and playing back interactive data between the SpaceWire master node equipment and the SpaceWire slave node equipment; a test device capable of detecting the quality of communication signals between a SpaceWire master device and a SpaceWire slave device through an oscilloscope is described in patent No. CN201610086117.5 entitled "test system for signal quality of SpaceWire network link and evaluation method for signal quality". When the two types of equipment are used, the link between the original SpaceWire master equipment and the original SpaceWire slave equipment is disconnected, and then two SpaceWire interfaces arranged outside the monitoring equipment are used for connecting the master node and the slave node, so that the link data detection function is realized. Therefore, the operation of disconnecting the original link has the inherent defects of changing the original working state and being inconvenient to implement, great difficulty is caused to the test and fault diagnosis after the assembly and integration of the satellite system, and the application effect of the network system is seriously influenced.
The existing SpaceWire network monitoring technology research is limited to data capture of a single link, the detection efficiency is low, and a specific feasible scheme for detecting the whole-satellite multi-node SpaceWire network is lacked. Meanwhile, the complex and destructive use mode of the test device cannot meet the test requirements of subsystem tests and whole satellite tests.
Disclosure of Invention
In view of this, the present invention provides a SpaceWire network interface bypass detection apparatus, which can implement online monitoring and analysis of data stream in the operation process of a network node, support simultaneous detection of multiple network nodes, solve the problem of undetectable network information stream of a whole satellite system, and provide a sufficient means for testing the communication function of a node device level network.
A SpaceWire network interface bypass detection device comprises a link signal monitoring module and a bypass monitoring analyzer which are directly connected through a SpaceWire cable; the link signal detection module is positioned in the SpaceWire network interface controller and is used for monitoring and outputting bidirectional signal flow of the SpaceWire communication interface in real time; the bypass monitoring analyzer is used for selecting and configuring channels of all the link signal monitoring modules and processing and analyzing data downloaded by the link signal monitoring modules;
the link signal detection module comprises a control register, M branch modules and a path gating module with N monitoring channels, wherein M is greater than 1, and N is less than or equal to M;
the outside of the branch module is directly connected with an external SpaceWire channel interface; the branch module comprises a receiver and a transmitter; the receiver receives signals Din and Sin input by a SpaceWire channel, and forwards and outputs the signals to the SpaceWire network interface control module and the access gating module after performing time sequence correction according to a clock recovery result; the method comprises the following steps that a transmitter receives signals Dout and Sout output by a SpaceWire channel and respectively transmits the signals Dout and Sout to a SpaceWire external interface and a channel gating module;
the channel gating module downloads signals from the M branch modules into the bypass detector through the N monitoring channels according to the assignment of the control register; the channel configuration instruction is a corresponding relation instruction of which monitoring channel the signal of the branch module is correspondingly forwarded to;
the bypass monitoring analyzer comprises a Spacewire configuration interface control module, an instruction analysis module, a data routing module, a CPU interface module and K Spacewire monitoring processing units, wherein each Spacewire monitoring processing unit comprises a Spacewire monitoring interface processing module and a data caching and processing module;
the Spacewire monitoring interface module receives signals transmitted by a channel gating module in a link detection module connected with a Spacewire cable, performs time sequence correction according to a recovered clock, then decodes the signals through a DS, and outputs generated data to a data caching and processing module of the same Spacewire monitoring processing unit;
the data caching and processing module directly stores the monitoring data of the corresponding channel, stores target data according to a control signal from the instruction analyzing module, processes and reads the data in the cache and forwards the data to an upper computer;
the data routing module receives playback data streams of the K data caching and processing modules, and outputs target monitoring channel playback data meeting requirements to the CPU interface module according to the control signal from the instruction analysis module;
the SpaceWire configuration interface control module receives a configuration instruction Data stream from the CPU interface module, generates a configuration Data output signal and a configuration Strobe output signal after carrying out DS coding on Data, and sends the configuration Data output signal and the configuration Strobe output signal to a link signal monitoring module of a target SpaceWire network router; one of the branch modules in the link signal monitoring module receives the configuration Data output signal and the configuration Strobe output signal, generates a configuration instruction after analysis, and configures a SpaceWire network interface control module in the router, so that the SpaceWire network interface control module assigns values to the control register according to the configuration;
the CPU interface module is responsible for interface time sequence and data exchange with the upper computer.
Further, the channel gating module is used for carrying out time synchronization processing on the input signal.
Preferably, the data offset address of the control register represents N monitoring channels, and a value stored in the offset address represents a SpaceWire channel number forwarded by the monitoring channel.
Further, the Spacewire configuration interface processing module processes configuration Data input signals and configuration Strobe input signals Din _ Cfg and Sin _ Cfg input signals from the external channel input and forwards the configuration Data input signals and the configuration Strobe input signals Din _ Cfg and Sin _ Cfg to the CPU interface module.
The invention has the following beneficial effects:
the link signal monitoring module in the device breaks through the traditional monitoring mode that monitoring equipment is inserted after an original link is disconnected, extracts link signals through a branch structure, meanwhile guarantees normal transmission of the link signals, simplifies a SpaceWire link data detection method, and improves monitoring efficiency.
The device provides a nondestructive monitoring solution, can realize on-line monitoring and analysis of data flow in the operation process of network nodes, and solves the problem that the network information flow of the whole satellite system is not measurable.
The device has good hardware interface expansibility, and the link signal monitoring module supports command configuration monitoring interface gating and is suitable for all SpaceWire interface control modules. The bypass monitoring analyzer can be used as a SpaceWire node, and plug and play of the test equipment is realized.
The combination mode of the link signal monitoring module and the bypass monitoring analyzer in the device is flexible, and diversified detection modes such as full-network multipoint parallel monitoring from single link monitoring can be realized.
Drawings
Fig. 1 is a schematic structural diagram of a SpaceWire network interface bypass detection device.
Fig. 2 is a schematic structural diagram of a link signal detection module.
Fig. 3 is a schematic diagram of the bypass monitoring analyzer.
Fig. 4 is a schematic diagram of a satellite-borne SpaceWire data processing network bypass detection side.
Detailed Description
The invention is described in detail below by way of example with reference to the accompanying drawings.
The device is divided into a two-part link signal monitoring module and a bypass monitoring analyzer which are directly connected through a SpaceWire cable, and the structural schematic diagram of the device is shown in figure 1. The link signal detection module is located in the SpaceWire network interface controller and is an independent module independent of the traditional SpaceWire network interface control module. The system is responsible for real-time monitoring and output of the bidirectional signal flow of the SpaceWire communication interface. The bypass monitoring analyzer is responsible for processing and analyzing data downloaded by the link signal monitoring module, selecting and configuring channels of all the link signal monitoring modules and providing a friendly user interface for testers to use.
The link signal detection module is externally linked with M SpaceWire channels, M branch modules are correspondingly arranged in the link signal detection module, wherein M is greater than 1, the link signal detection module is provided with a path selection module of N monitoring channels, N is less than or equal to M, and a path control signal controls the working mode of the link signal detection module. The device is further described below with reference to fig. 2.
The outside of the branch module is directly connected with an external SpaceWire channel interface. According to the ECSS-E-50-12 protocol standard, a Data-Strobe coding mode, namely DS coding, is adopted for signals transmitted by a SpaceWire link. Each channel contains a bi-directional stream of Data signals and Strobe signals, i.e., 4 signals, Din, Sin, Dout, Sout. The branch module is responsible for intercepting four signals in real time and forwarding the four signals to the path gating module. The device comprises a receiver responsible for receiving data and a transmitter responsible for transmitting data, and the two modules work independently. In the receiver, after receiving the SpaceWire channel input signals Din and Sin, the SpaceWire channel input signals Din and Sin carry out time sequence correction according to a recovered clock result and then are forwarded and output to the SpaceWire network interface control module and the path selection module, so that the result received by the interior of the controller can be ensured to be consistent with the result received by the external bypass analyzer. In the transmitter, the SpaceWire channel output signals Dout and Sout are directly subjected to shunt operation from the output interface and are respectively sent to the SpaceWire external interface and the channel selection module, so that the signals input into the channel selection module are all copies of bidirectional transmission signals of the SpaceWire channel.
The channel selection module receives SpaceWire channel input and output signals Din, Sin, Dout and Sout from the M branch modules. The signals are transmitted to N monitoring channels after channel selection and signal processing and then are transmitted to a bypass detector, namely Din _ Test, Sin _ Test, Dout _ Test and Sout _ Test. Since the transceiving channel clocks are asynchronous, and the Din and Sin signals need to undergo DS decoding recovery and timing correction, a fixed offset may be generated in the time domain from Dout and Sout. In order to ensure the synchronism of 4 signals sampled on the monitoring channel interface in time, the channel selection module needs to synchronize the input signals. The control register is modified by a control signal of the SpaceWire network interface controller, the data in the register is responsible for configuring the information forwarding relation between M paths of input and output signals and N paths of monitoring signals, the implementation form of the control register is an array with the length of N, the data offset address represents N paths of monitoring channels, and the numerical value stored in the offset address represents the SpaceWire channel number forwarded by the monitoring channels.
The bypass monitoring analyzer processes and analyzes monitoring signals Din _ Test, Sin _ Test, Dout _ Test and Sout _ Test from each link signal monitoring module of the whole SpaceWire network, and is also responsible for channel selection configuration of the link signal monitoring modules. The bypass monitoring analyzer is connected with K-path SpaceWire monitoring interfaces by using SpaceWire cables to be connected with all link signal monitoring modules in a network, if the number of the link signal monitoring modules in the network is J, the bypass monitoring analyzer is externally connected with the K-path SpaceWire monitoring interfaces, wherein K is less than or equal to NxJ, and one-path SpaceWire communication interface is connected with a SpaceWire network router. The equipment consists of a hardware circuit and upper computer test software, the equipment internally comprises a Spacewire configuration interface control module, an instruction analysis module, a data routing module, a CPU interface module and K Spacewire monitoring and processing units, each Spacewire monitoring and processing unit comprises a Spacewire monitoring interface processing module and a data caching and processing module, and the specific structural block diagram of the equipment is shown in figure 3.
The Spacewire monitoring interface control module processes monitoring signals Din _ Test, Sin _ Test, Dout _ Test and Sout _ Test from the link signal monitoring module, performs time sequence correction according to a recovery clock, then outputs generated data to the data caching and processing module of the corresponding channel through a DS decoder.
The SpaceWire configuration interface control module receives a configuration instruction Data stream from the CPU interface module, encodes the Data to generate a configuration Data output signal and configuration Strobe output signals Dout _ Cfg and Sout _ Cfg, and sends the configuration Data output signal and the configuration Strobe output signals Dout _ Cfg and Sout _ Cfg to a link signal monitoring module in a target SpaceWire network router; one of the branch modules in the link signal monitoring module receives the configuration Data output signal and the configuration Strobe output signal, generates a configuration instruction after analysis, and configures a SpaceWire network interface control module in the router, and the SpaceWire network interface control module assigns values to the control register according to the configuration, so that the configuration operation of channel gating in the target link signal monitoring module is completed. In addition, the Spacewire configuration interface processing module can also process configuration Data input signals and configuration Strobe input signals Din _ Cfg and Sin _ Cfg input signals from external channel input and transmit the configuration Data input signals and the configuration Strobe input signals Din _ Cfg and Sin _ Cfg to the CPU interface module.
The data caching and processing module directly stores the monitoring data of the corresponding channel, and performs target data storage, processing and reading of the data in the cache and forwarding to an upper computer and other various operations according to the control signal from the instruction analysis module.
The data routing module receives the playback data streams of the K data caching and processing modules, and outputs the playback data meeting the requirement of the target monitoring channel to the CPU interface module according to the control signal from the instruction analyzing module.
The CPU interface module is responsible for interface time sequence and data exchange with the upper computer.
And the upper computer software system acquires data analysis parameters and operation instructions through a user interface, and completes instruction transmission and target data receiving through interaction with a CPU interface. And finally, feeding the target data back to the user interface to realize the closed-loop operation of data monitoring.
The invention provides a SpaceWire network interface bypass detection device. When the satellite-borne data processing system is in the face of an actual satellite-borne data processing system, the device can configure a proper bypass detection side channel, an individualized data detection requirement and corresponding data extraction and processing according to the external interface condition, the data flow condition and the functional performance requirement through an instruction.
In a specific example, the spaceborne data processing network can connect scientific loads, mass storage, spaceborne computers, downlink data processors and other spaceborne equipment on a spacecraft into a unified network system through a SpaceWire bus. As shown in fig. 4, the load device 1 belongs to a load device with a high data rate, and is directly connected to a mass storage by using a point-to-point link, and the load device 2 belongs to a device with a lower rate than the load device 1, and its data is transmitted to the mass storage through a SpaceWire router. The load instrument 3 does not contain a SpaceWire bus interface, and is connected to a SpaceWire router in a mode of expanding an I/O module, so that data are sent to a mass storage through a SpaceWire network. The load instrument 4 belongs to a relatively complex load subsystem, and comprises a plurality of sub-modules inside, and the sub-modules are connected through an internal bus (a CAN bus or RS-485). The remote terminal controller RTC is used for establishing a bridge circuit between the load internal bus and the SpaceWire bus, meanwhile, interaction with other signals in the load instrument can be realized, and the load instrument 4 is accessed into a SpaceWire backbone network through the RTC. The bypass monitoring operation is carried out based on the network and comprises the following steps:
1. building a detection environment
Firstly, a bypass monitoring device which needs to meet the conditions, a large-capacity memory and a SpaceWire interface control module in a SpaceWire router all contain a link signal monitoring module which supports 8 SpaceWire monitoring interfaces. The mass memory is used as a SpaceWire node device and supports a 2-path SpaceWire communication interface. The SpaceWire router is used as a routing device and supports a 10-path SpaceWire communication interface.
Then, the detection link to be built is analyzed. The stored data of the mass memory come from the load instrument 1 and the SpaceWire router, and the playback data is forwarded to the downlink via the SpaceWire router. Therefore, in the monitoring process, only two SpaceWire cables are needed to be connected with the enabled monitoring interfaces 1 and 2. The SpaceWire router serves as a network hub unit and transfers data from the load instruments 2, 3 and 4, the mass storage, the data compression decoder, the satellite borne computer and the like. Therefore, the data input and output streams of the SpaceWire control interface module of the device are complex and changeable, and the data interaction condition of the connected devices needs to be monitored completely. Therefore, in the monitoring process, only 6 SpaceWire cables are needed to be connected with the enabled monitoring interfaces 1-6.
And finally, taking the bypass monitoring analyzer of the constructed monitoring link as SpaceWire node equipment to be directly connected with the SpaceWire router.
2. And starting the bypass monitoring network initialization operation. After the bypass monitoring analyzer is started, monitoring channel gating configuration is carried out on the mass storage and the SpaceWire router through the upper computer according to the SpaceWire cable connection condition. For example, a communication interface in which a mass storage is connected to the load instrument 1 is configured to the monitoring interface 1, a communication interface in which a mass storage is connected to a SpaceWire router is configured to the monitoring interface 2, and the like. The instructions are packaged into a format of an RMAP protocol in a CPU interface module of the bypass monitoring analyzer and enter a SpaceWire router, and then an RMAP instruction packet is forwarded to a SpaceWire interface of a large-capacity storage for analysis in a path addressing mode, so that configuration operation of a related detection interface is realized.
3. In the running process of the whole satellite-borne data system, a tester monitors and analyzes data in the mass storage and the SpaceWire router through the upper computer.
In summary, the above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (4)
1. A SpaceWire network interface bypass detection device is characterized by comprising a link signal monitoring module and a bypass monitoring analyzer which are directly connected through a SpaceWire cable; the link signal detection module is positioned in the SpaceWire network interface controller and is used for monitoring and outputting bidirectional signal flow of the SpaceWire communication interface in real time; the bypass monitoring analyzer is used for selecting and configuring channels of all the link signal monitoring modules and processing and analyzing data downloaded by the link signal monitoring modules;
the link signal detection module comprises a control register, M branch modules and a path gating module with N monitoring channels, wherein M is greater than 1, and N is less than or equal to M;
the outside of the branch module is directly connected with an external SpaceWire channel interface; the branch module comprises a receiver and a transmitter; the receiver receives signals Din and Sin input by a SpaceWire channel, and forwards and outputs the signals to the SpaceWire network interface control module and the access gating module after performing time sequence correction according to a clock recovery result; the method comprises the following steps that a transmitter receives signals Dout and Sout output by a SpaceWire channel and respectively transmits the signals Dout and Sout to a SpaceWire external interface and a channel gating module;
the channel gating module downloads signals from the M branch modules into the bypass detector through the N monitoring channels according to the assignment of the control register; the channel configuration instruction is a corresponding relation instruction of which monitoring channel the signal of the branch module is correspondingly forwarded to;
the bypass monitoring analyzer comprises a Spacewire configuration interface control module, an instruction analysis module, a data routing module, a CPU interface module and K Spacewire monitoring processing units, wherein each Spacewire monitoring processing unit comprises a Spacewire monitoring interface processing module and a data caching and processing module;
the Spacewire monitoring interface module receives signals transmitted by a channel gating module in a link detection module connected with a Spacewire cable, performs time sequence correction according to a recovered clock, then decodes the signals through a DS, and outputs generated data to a data caching and processing module of the same Spacewire monitoring processing unit;
the data caching and processing module directly stores the monitoring data of the corresponding channel, stores target data according to a control signal from the instruction analyzing module, processes and reads the data in the cache and forwards the data to an upper computer;
the data routing module receives playback data streams of the K data caching and processing modules, and outputs target monitoring channel playback data meeting requirements to the CPU interface module according to the control signal from the instruction analysis module;
the SpaceWire configuration interface control module receives a configuration instruction Data stream from the CPU interface module, generates a configuration Data output signal and a configuration Strobe output signal after carrying out DS coding on Data, and sends the configuration Data output signal and the configuration Strobe output signal to a link signal monitoring module of a target SpaceWire network router; one of the branch modules in the link signal monitoring module receives the configuration Data output signal and the configuration Strobe output signal, generates a configuration instruction after analysis, and configures a SpaceWire network interface control module in the router, so that the SpaceWire network interface control module assigns values to the control register according to the configuration;
the CPU interface module is responsible for interface time sequence and data exchange with the upper computer.
2. The device as claimed in claim 1, wherein the channel gating module is configured to perform time synchronization on the input signal.
3. The device as claimed in claim 1, wherein the data offset address of the control register represents N monitoring channels, and the value stored in the offset address represents the number of the SpaceWire channel forwarded by the monitoring channel.
4. The device as claimed in claim 1, wherein the SpaceWire configuration interface processing module processes the configuration Data input signal and the configuration Strobe input signals Din _ Cfg, Sin _ Cfg inputted from the external channel and forwards them to the CPU interface module.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113794612A (en) * | 2021-09-09 | 2021-12-14 | 恒安嘉新（北京）科技股份公司 | Control monitoring device and system of CAN network |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070258292A1 (en) * | 2006-04-03 | 2007-11-08 | Nec Soft, Ltd. | Data/strobe encoding scheme circuit and data/strobe encoding method |
| CN103684945A (en) * | 2012-09-25 | 2014-03-26 | 上海航天测控通信研究所 | General spacewire node device |
| CN105915404A (en) * | 2016-02-15 | 2016-08-31 | 上海卫星工程研究所 | SpaceWire network link signal quality test system and signal quality evaluation method |
| CN106789295A (en) * | 2016-12-29 | 2017-05-31 | 中国科学院长春光学精密机械与物理研究所 | A kind of SpaceWire bus communication systems and its supervision equipment |
| JPWO2017043076A1 (en) * | 2015-09-11 | 2018-07-05 | 日本電気株式会社 | Test apparatus, test method, and program |
| CN110646723A (en) * | 2018-06-27 | 2020-01-03 | 龙芯中科技术有限公司 | Bus interface test circuit and method |
| CN110704349A (en) * | 2019-09-04 | 2020-01-17 | 北京航空航天大学 | SpaceWire node device for reliable data transmission |
| CN111064545A (en) * | 2019-12-02 | 2020-04-24 | 西安电子科技大学 | Device and method for realizing private network ground inspection with SPW interface based on FPGA |
-
2020
- 2020-09-29 CN CN202011053088.5A patent/CN112291110B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070258292A1 (en) * | 2006-04-03 | 2007-11-08 | Nec Soft, Ltd. | Data/strobe encoding scheme circuit and data/strobe encoding method |
| CN103684945A (en) * | 2012-09-25 | 2014-03-26 | 上海航天测控通信研究所 | General spacewire node device |
| JPWO2017043076A1 (en) * | 2015-09-11 | 2018-07-05 | 日本電気株式会社 | Test apparatus, test method, and program |
| CN105915404A (en) * | 2016-02-15 | 2016-08-31 | 上海卫星工程研究所 | SpaceWire network link signal quality test system and signal quality evaluation method |
| CN106789295A (en) * | 2016-12-29 | 2017-05-31 | 中国科学院长春光学精密机械与物理研究所 | A kind of SpaceWire bus communication systems and its supervision equipment |
| CN110646723A (en) * | 2018-06-27 | 2020-01-03 | 龙芯中科技术有限公司 | Bus interface test circuit and method |
| CN110704349A (en) * | 2019-09-04 | 2020-01-17 | 北京航空航天大学 | SpaceWire node device for reliable data transmission |
| CN111064545A (en) * | 2019-12-02 | 2020-04-24 | 西安电子科技大学 | Device and method for realizing private network ground inspection with SPW interface based on FPGA |
Non-Patent Citations (2)
| Title |
|---|
| 徐曙清等: "SpaceWire与SpaceFibre高速总线发展与研究", 《上海航天》 * |
| 柳萌等: "SpaceWire高速总线节点控制器的设计与实现", 《电子技术应用》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113794612A (en) * | 2021-09-09 | 2021-12-14 | 恒安嘉新（北京）科技股份公司 | Control monitoring device and system of CAN network |
| CN113794612B (en) * | 2021-09-09 | 2023-02-17 | 恒安嘉新（北京）科技股份公司 | Control monitoring device and system of CAN network |
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