CN209182706U - A kind of vehicle-mounted data synchronous based on Ethernet - Google Patents
A kind of vehicle-mounted data synchronous based on Ethernet Download PDFInfo
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- CN209182706U CN209182706U CN201821682371.2U CN201821682371U CN209182706U CN 209182706 U CN209182706 U CN 209182706U CN 201821682371 U CN201821682371 U CN 201821682371U CN 209182706 U CN209182706 U CN 209182706U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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Abstract
The utility model discloses a kind of vehicle-mounted data synchronous based on Ethernet, including at least two data acquisition equipments, the data acquisition equipment includes data acquisition unit, CPU element, clock processing unit, crosspoint, Ethernet interface unit, the data acquisition unit acquires onboard sensor data, and give the data of acquisition to CPU element, the clock processing unit provides clock for CPU element and Ethernet interface unit, and the CPU element is that data add timestamp according to clock；In at least two data acquisition equipments, setting a wherein data acquisition equipment, as main equipment, other data acquisition equipments are from equipment.The utility model main equipment CPU is to from equipment CPU transmission time information, so that the time of at least two data acquisition equipments keeps synchronizing, the data of acquisition are added into upper timestamp simultaneously, the acquisition data for carrying timestamp information contain temporal information, it no longer is not known to influence by Ethernet propagation delay time, data have synchronism and accuracy.
Description
Technical field
The utility model relates to data acquisition technology fields, and in particular to distributed data acquisition system.
Background technique
Signal acquisition point quantity is more on rail vehicle, distribution is wide, distance, collector specifications and models multiplicity, therefore uses
Distributed parallel computing environment, multiple devices are acquired data simultaneously, are in communication with each other by ether net mode, are widest at present
Using.Ethernet has many advantages, such as that strong antijamming capability, long transmission distance, traffic rate are high, but the CSMA/CD technology of Ethernet
(Carrier Sense Multiple Access/Collision Detection, csma/collision detection)
It is uncertain in the presence of transmission real-time response.When being sent to data processing centre by Ethernet after equipment respectively acquires data, by
It is different in the Ethernet transmission real-time response time, lead to the acquisition data received not and be the acquisition data of synchronization, one
The field high to time required precision a bit, it is a fearful thing that the data of acquisition, which cannot synchronize,.
Utility model content
Technical problem to be solved in the utility model is just to provide a kind of vehicle-mounted data synchronous acquisition based on Ethernet
System, when multiple devices acquire data simultaneously, caused by can be avoided because the Ethernet transmission real-time response time is different
Data are asynchronous, it is ensured that acquisition data synchronism and accuracy.
In order to solve the above technical problems, the utility model adopts the following technical solution: a kind of Vehicular data based on Ethernet
According to synchronous, including at least two data acquisition equipments, the data acquisition equipment include data acquisition unit, CPU
Unit, clock processing unit, crosspoint, Ethernet interface unit, the data acquisition unit acquire onboard sensor data,
And give the data of acquisition to CPU element, the clock processing unit provides clock for CPU element and Ethernet interface unit,
The CPU element is that data add timestamp according to clock, and at least two data acquisition equipments are real by Ethernet interface unit
Existing ethernet communication connection, the crosspoint and Ethernet interface unit matching will be acquired plus the data of timestamp in data
Data exchange is carried out between equipment；In at least two data acquisition equipments, set wherein a data acquisition equipment as main equipment,
Other data acquisition equipments are from equipment, and main equipment CPU is to from equipment CPU transmission time information, so that at least two number of units are according to adopting
The time for collecting equipment keeps synchronizing.
By adopting the above technical scheme, main equipment CPU is to from equipment CPU transmission time information, so that at least for the utility model
The time of two data acquisition equipments keeps synchronizing, while the data of acquisition are added upper timestamp, carries timestamp information
Acquisition data contain temporal information, no longer influenced by Ethernet propagation delay time is uncertain, data have synchronism and accurate
Property.
The specific technical solution and its advantages of the utility model will combine attached in the following detailed description
Figure is described in detail.
Detailed description of the invention
The utility model is further described with reference to the accompanying drawings and detailed description:
Fig. 1 is the synchronous block diagram of 2 equipment of the utility model；
Fig. 2 is the synchronous block diagram of N platform equipment of the utility model；
Fig. 3 is data acquisition unit system block diagram in the utility model；
Fig. 4 is CPU element system block diagram in the utility model；
Fig. 5 is crosspoint in the utility model, Ethernet interface unit and clock processing unit system block diagram.
Specific embodiment
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The utility model will be described in detail below with reference to the accompanying drawings and embodiments.
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Be to the description only actually of at least one exemplary embodiment below it is illustrative, never as to this is practical
Novel and its application or any restrictions used.Based on the embodiments of the present invention, those of ordinary skill in the art are not having
Every other embodiment obtained under the premise of creative work is made, is fallen within the protection scope of the utility model.
The utility model provides a kind of distributed parallel computing environment realized based on Ethernet, and what is be made of multiple devices is same
Acquisition system is walked, to meet multiple devices in practical application while acquire data, the data of acquisition have synchronism and accuracy.
It includes at least two data acquisition equipments, and the data acquisition equipment includes data acquisition unit, CPU element, clock processing
Unit, crosspoint, Ethernet interface unit, the data acquisition unit acquire onboard sensor data, and by the number of acquisition
According to CPU element is given, the clock processing unit provides clock, the CPU element root for CPU element and Ethernet interface unit
It is that data add timestamp according to clock, at least two data acquisition equipments realize that ethernet communication connects by Ethernet interface unit
It connects, the crosspoint and Ethernet interface cooperation will carry out data friendship plus the data of timestamp between data acquisition equipment
It changes；In at least two data acquisition equipments, setting a wherein data acquisition equipment, as main equipment, other data acquisition equipments are
From equipment, main equipment CPU is to from equipment CPU transmission time information, so that the time of at least two data acquisition equipments keeps same
Step.Due to by receiving the temporal information of main equipment, kept from equipment with main equipment time synchronization, and by the data of acquisition unit
Increasing timestamp, the acquisition data for carrying timestamp information contain temporal information, when more equipment are in communication with each other, data tool
Having time information, it can be ensured that the acquisition data synchronism and accuracy.
Embodiment one, refering to what is shown in Fig. 1, a set of acquisition system is constituted by 2 equipment, wherein one is main equipment 1, it is another
Platform is from equipment 2.Main equipment 1 includes at least 1 clock processing T1 unit, 1 data and acquires D1 unit, 1 CPU element C1,1
A crosspoint S1,1 Ethernet interface unit P1.Wherein clock processing T1 unit is comprehensive by phaselocked loop and clock, respectively
Clock is sent to CPU element C1 and Ethernet interface unit P1；Central processing unit of the CPU element C1 as main equipment 1 receives
The data of data acquisition unit D1 simultaneously add timestamp function, data D1 are become D1 ', D1 ' is the data comprising temporal information；
Crosspoint S1 mainly realizes function of exchange；Ethernet interface unit P1 is used with from the Ethernet interface unit P2 in equipment 2
The Ethernet of 100M/1000M is connected, and realizes physical layer data interaction.1 clock, which is included at least, from equipment 2 handles T2 unit, 1
A data acquire D2 unit, 1 CPU element C2,1 crosspoint S2,1 Ethernet interface unit P2.Ether in equipment 2
Network interface unit P2 by 100M/1000M ethernet communication obtain main equipment time, and by the time of main equipment to clock at
Manage unit T2；The Ethernet interface unit P2 time sent is sent to CPU element C2 by clock processing unit T2；CPU element C2
As the central processing unit from equipment 2, receives the data of data acquisition unit D2 and add timestamp function, data D2 is become
D2 ', D2 ' it is the data comprising temporal information；Crosspoint S2 mainly realizes function of exchange.
Embodiment two constitutes a set of acquisition system by N platform equipment.Wherein one be main equipment 3, other N-1 platforms be all from
Equipment.Main equipment 3 includes at least 1 clock processing T3 unit, 1 data acquisition D3 unit, 1 CPU element C3,1 exchange
3,1 Ethernet interface unit P3 of cell S.Wherein clock processing T3 unit is comprehensive by phaselocked loop and clock, respectively by clock
It is sent to CPU element C3 and Ethernet interface unit P3；Central processing unit of the CPU element C3 as main equipment 3 receives data and adopts
Collect the data of cells D 3 and add timestamp function, data D3 is become into D3 ', D3 ' is the data comprising temporal information；Exchange is single
First S3 mainly realizes function of exchange；Ethernet interface unit P3 with from the Ethernet interface unit P42 100M/ in equipment 4
The Ethernet of 1000M is connected, and realizes physical layer data interaction.1 clock, which is included at least, from equipment 4 handles T4 unit, 1 data
Acquire D4 unit, 1 CPU element C4,1 crosspoint S4,2 Ethernet interface units P41 and P42.Ether in equipment 4
Network interface unit P42 obtains the time of main equipment by 100M/1000M ethernet communication, and by the time of main equipment to clock
Processing unit T4；The Ethernet interface unit P42 time sent is sent to CPU element C4 and another by clock processing unit T4
Ethernet interface unit P41, Ethernet interface unit P41 and next Ethernet interface unit Pm2 from equipment m are used
The Ethernet of 100M/1000M is connected, and realizes physical layer data interaction；CPU element C4 connects as the central processing unit from equipment 4
It receives the data of data acquisition unit D4 and adds timestamp function, data D4 is become into D4 ', D4 ' is the number comprising temporal information
According to；Crosspoint S4 mainly realizes function of exchange.1 clock processing Tm unit, 1 data, which are included at least, from equipment M acquires Dm
Unit, 1 CPU element Cm, 1 crosspoint Sm, 2 Ethernet interface units Pm1 and Pm2.It is connect from the Ethernet in equipment M
Mouth unit Pm2 obtains the time of main equipment by 100M/1000M ethernet communication, and gives the time of main equipment to clock processing
Unit Tm；The Ethernet interface unit Pm2 time sent is sent to CPU element Cm and another ether by clock processing unit Tm
Network interface unit Pm1, Ethernet interface unit Pm1 and next Ethernet interface unit Pn 100M/ from equipment N
The Ethernet of 1000M is connected, and realizes physical layer data interaction；CPU element Cn receives number as the central processing unit from equipment n
According to the data of acquisition unit Dn and plus timestamp function, data Dn is become into Dn ', Dn ' is the data comprising temporal information；It hands over
It changes cell S n and mainly realizes function of exchange.1 clock processing Tn unit, 1 data, which are included at least, from equipment N acquires Dn unit, 1
A CPU element Cn, 1 crosspoint Sn, 1 Ethernet interface unit Pn.Ethernet interface unit Pn in equipment n passes through
100M/1000M ethernet communication obtains the time of main equipment, and gives the time of main equipment to clock processing unit Tn；At clock
It manages unit Tn and the Ethernet interface unit Pn time sent is sent to CPU element Cn；CPU element C2 is as from equipment n
Central processor, the data for receiving data acquisition unit Dn simultaneously add timestamp function, and data Dn is become Dn ', Dn ' be comprising when
Between information data；Crosspoint Sn mainly realizes function of exchange.
In the above-described embodiments, refering to what is shown in Fig. 3, data acquisition unit includes that analog signal conditioner unit and AD modulus turn
Unit is changed, sensor signal initially enters analog signal conditioner unit, according to different sensors, selects corresponding conditioning electricity
Road, the analog signal by conditioning processing are sent into AD AD conversion unit, and the result by AD conversion is sent to CPU element.With reference to
Shown in Fig. 4, for CPU element using Freescale company Power PC core piece MPC8314 as processor, DDR is MICRON's
MT47H64M16HR, capacity 1*2=2Gbits；FLASH is the S29GL512P11TFI020, capacity 512*2 of Spansion
=1024Mbits, 16 bit data bus.The UART circuitry of crystal oscillating circuit, Jtag circuit and debugging is further comprised in CPU module,
CPU is communicated by the chip of PCIe bus and crosspoint, provides data high-speed access and processing.Crosspoint uses
Broadcom company Ethernet switch BCM56134, chip provide the core exchange energy of 24 100,000,000 nets and 4 kilomega networks
Power, chip additionally provide 1588 clock processing function of IEEE, therefore do not need again external 1588 clock module of IEEE.
BCM565134 is communicated by PCIe interface with CPU element.Slave end of the BCM56134 as PCIe interface, receives CPU
Management, configuration and the control of unit.BCM565134 is connected by RGMII interface with Ethernet interface unit.Ethernet interface list
Member includes Ethernet chip, network transformer and M12 interface.The Ethernet chip of the utility model uses
The BCM54810 of Broadcom company, the chip interface support 1000BASE-T IEEE 802.3ab, 100BASE-TX IEEE
802.3u, 100BASE-FX support SGMII interface, the RGMII interface at the end Switch/Mac.Network transformer is using PULSE's
HX5008NLT, the transformer are the single-ended discharge surface patch type device of 1000BASE-T, and common-mode isolation voltage reaches 1500V, are sent
It is 1:1 with the transformer ratio of receiving end, when 1MHZ-100MHZ operation at frequencies, insertion loss 1db.
In addition to above preferred embodiment, for the utility model there are also other embodiments, those skilled in the art can root
It is made various changes and modifications according to the utility model, without departing from the spirit of the utility model, should belong to the utility model
Range defined in claims.
Claims (2)
1. a kind of vehicle-mounted data synchronous based on Ethernet, it is characterised in that: set including at least two number of units according to acquisition
Standby, the data acquisition equipment includes data acquisition unit, CPU element, clock processing unit, crosspoint, Ethernet interface
Unit, the data acquisition unit acquire onboard sensor data, and give the data of acquisition to CPU element, at the clock
Reason unit provides clock for CPU element and Ethernet interface unit, and the CPU element is that data add timestamp according to clock,
At least two data acquisition equipments realize ethernet communication connection, the crosspoint and Ethernet by Ethernet interface unit
Interface unit cooperation will carry out data exchange plus the data of timestamp between data acquisition equipment；At least two number of units are according to acquisition
In equipment, set wherein a data acquisition equipment as main equipment, other data acquisition equipments be from equipment, main equipment CPU to
From equipment CPU transmission time information, so that the time of at least two data acquisition equipments keeps synchronizing.
2. a kind of vehicle-mounted data synchronous based on Ethernet according to claim 1, it is characterised in that: described
Ethernet is the Ethernet of 100M or 1000M.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821682371.2U CN209182706U (en) | 2018-10-17 | 2018-10-17 | A kind of vehicle-mounted data synchronous based on Ethernet |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821682371.2U CN209182706U (en) | 2018-10-17 | 2018-10-17 | A kind of vehicle-mounted data synchronous based on Ethernet |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112769516A (en) * | 2020-12-24 | 2021-05-07 | 深兰人工智能(深圳)有限公司 | Data synchronous acquisition method and device, electronic equipment and storage medium |
| CN113422665A (en) * | 2021-08-23 | 2021-09-21 | 奥特酷智能科技(南京)有限公司 | Method and system for realizing time synchronization of vehicle-mounted system based on IPC mechanism |
| CN113839463A (en) * | 2021-08-27 | 2021-12-24 | 新天绿色能源股份有限公司 | Wind-solar hydrogen production control system and communication method thereof |
-
2018
- 2018-10-17 CN CN201821682371.2U patent/CN209182706U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112769516A (en) * | 2020-12-24 | 2021-05-07 | 深兰人工智能(深圳)有限公司 | Data synchronous acquisition method and device, electronic equipment and storage medium |
| CN113422665A (en) * | 2021-08-23 | 2021-09-21 | 奥特酷智能科技(南京)有限公司 | Method and system for realizing time synchronization of vehicle-mounted system based on IPC mechanism |
| CN113839463A (en) * | 2021-08-27 | 2021-12-24 | 新天绿色能源股份有限公司 | Wind-solar hydrogen production control system and communication method thereof |
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Effective date of registration: 20221013 Address after: 311305 Room 105, No. 888 Shenglian Road, Qingshanhu Street, Lin'an District, Hangzhou, Zhejiang Patentee after: Zhejiang net new Intelligent Technology Co.,Ltd. Address before: Room 301-305, building 2, No. 2, No. 4 road, Sandun Xiyuan, Xihu District, Hangzhou City, Zhejiang Province Patentee before: ZHEJIANG INSIGMA TECHNOLOGY Co.,Ltd. |