When the signal is input to the main control board of the MCU for processing, external interference will also enter through the input port. In addition to the use of anti-jamming device optocouplers on the input interface, anti-interference measures must be taken on the software to ensure reliable operation. Otherwise, it will cause a malfunction and make it not work properly. From the input port, the interference is a random spike with varying amplitude and width. The main task of anti-jamming design is to identify the authenticity information, discard the interference, and leave a useful signal. We have taken the following measures and received good results.
The pulse width discrimination input pulse has a certain width, and the interference is mostly a sharp pulse, and continuous sampling is needed to distinguish the true signal from the interference signal. First, collect the signal and look for the rising edge of the signal. When the rising edge is found, it is sampled K times multiple times (four times in the figure), and if there is still a signal after K times, it is considered to be a true signal. If the signal is not collected after 2 to K times, it is considered that the interference signal is just collected. With this method, the intrusion of the interference signal can be greatly suppressed.
(Finish)
This classification mainly includes the aluminum low-pressure casting Machinery Parts using in Chassis area.
Normal raw material: A356.ZL101A.ZL101.AlSi7Mg
The pressure on the surface of the molten metal is 0.06~0.12Mpa.This processing has good shrinkage, casting tissue is dense, easy to produce the large thin-walled complex parts, the casting head is not needed , metal yield can be up to 95%.
Process Technology: Low-pressure casting,T6 Treatment,Shot Blasting,NC Machining,Spray Coating
Product Dimensions: Customized
Casting General Tolerance: Grade GBT6414-CT8
Flow Processes: Die casting, Degating to remove the residual of the gate, Polishing and Deburring to remove the burrs, Polishing to remove the parting line, flash,CNC Turning, Cleaning, Packaging, Storaging, Shipping
Control Measure: Incoming Material Test, First Article inspection, Routing inspection, Final item inspection, and Outgoing quality control
Inspection Equipment: CMM, Caliper, Plug Gage, Screw Gauge
Application: Machinery Parts
Certificate: IATF16949:2016,ISO14001:2015,ISO45001:2018
Lead Time: 30-35 days
Trade Term: FOB Ningbo
Aluminum Low-Pressure Chassis Parts,Al Low-Pressure Casting Chassis Parts,Low-Pressure Casting Chassis Parts
NINGBO ZHENHAI BOLANG METAL PRODUCTS FACTORY , https://www.casting-part.com