source:truck tracking webfleet solutions release time:2022-11-11 Hits: Popular:realtime gps tracker online
The whole acquisition system is scattered in various parts of the bridge. The bridge is divided into several sections according to the region. In the main sections, signal collector stations are placed. Each collector station is several kilometers or even more than ten kilometers away. Each group of collector stations is connected to the GPS synchronous clock receiver. The GPS PPS receiver receives the GPS clock synchronization signal, performs corresponding processing to obtain the clock synchronization signal and absolute time stamp, and sends them to the PXI acquisition equipment. The acquisition equipment receives the processed GPS synchronization signal, Achieve synchronization of the entire distributed acquisition system.
The clock synchronization here has two meanings:
The synchronization of data sampling frequency includes pulse synchronization and phase synchronization of sampling clock signal.
Synchronization on the timeline, that is, the synchronization of the time stamp at the sampling point.
Only when both aspects are synchronized can it be called a real synchronous acquisition.
At present, in addition to the GPS PPS clock synchronization technology scheme, there are two other clock synchronization technology schemes:
1. Chassis direct connection clock synchronization technology:
The clock frequency sharing technology of PXI-6653 clock synchronization module is mainly adopted. Each acquisition device is equipped with PXI 6653 clock synchronization module, and then the 6653 modules of each acquisition device are connected with coaxial cables, with one module as the master module and the rest as the slave modules; The clock signal inside the master module synchronizes the clock signal inside the slave module through the coaxial cable. The PXI-4472B uses the secondary signal as the sampling clock. The network time server can be used for timestamp synchronization.
2. GPS IRIG-B clock synchronization technology:
This technology is very similar to the GPS PPS technology. Both receive the GPS synchronization signal through the GPS receiver, do the corresponding processing and send it to the acquisition equipment for acquisition synchronization. The difference between this technology and the GPS PPS is that the IRIG-B clock synchronization signal contains absolute time, so PXI-6608 needs to receive this signal and parse it into a usable timestamp.
Read recommendations:
fleet solution webfleet solutions
Compared with the difference between Beidou positioning and GPS positioning.cat gps tracker Manufact
Last article:Composition of GPS PXI acquisition equipment system
Next article:Structure of GPS antenna
Related Information
obd2 gps tracker verizon wholesaler
2023-04-23OBD GPS Tracker
2023-03-16car gps tracker Factory
2023-04-23Vehicle tracking device
2023-03-16simple gps tracking Production
2023-04-23car gps tracker wholesaler
2023-04-23car gps tracker wholesale
2023-04-234G GPS Tracker
2023-04-11gps tracker for kids
2023-04-11Special Looks GPS Tracker PCBA
2023-03-16G200NY -Cow/Camel GPS Tracker
2022-06-21G02M Pet Tracker
2022-06-19TK100B- Accurate Pro version GT06/TK100
2023-10-06VSL100 GPS Speed Limiter, Speed Governor
2022-06-19P901 4G ID Card GPS Tracker Smart Walkie-talkie
2025-07-11Mobile GPS.plug & play Obd gps tracker wholesale
2023-05-20The concept and composition of the car positioning terminal.gps tracker no monthly fee wholesaler
2023-04-04Introduction to GPS Features
2022-09-23What are the information methods sent by GPS reference stations.gps tracker app Manufacturing
2023-06-14GPS parameter.Gps speed limiter Solution
2023-05-25GPS Control Center
2022-09-05GPS navigation all-in-one machine.Pet GPS Tracker distributors
2023-07-18GPS vehicle tracking and dispatching function
2023-02-02The Application of GPS in Automotive Navigation and Traffic Management.4G GPS Tracker for vehicles w
2023-08-24Is there really a GPS positioner with a free card?gps tracker für auto webfleet solutions
2023-03-08GPS Quadrifilar Helix Antenna (Quadrifilar Helix Antenna)
2022-09-27What are the GPS signals
2022-09-22What is GPS location time?
2022-10-26GPS monitoring center alarm.pet gps tracker cat price
2023-08-09Do gps trackers consume data?
2022-09-16