我的花币
上海临港北京大学国际科技创新中心（简称“北大临港科创中心”）是由北京大学和中国（上海）自由贸易试验区临港新片区共同支持建设的“科技创新型平台”，是专注科技创新服务的社会服务机构（民办非企业单位）。
北大临港科创中心依托北京大学的创新优势和人才资源，聚焦生物医药、人工智能、集成电路、新材料、低空经济等产业方向，通过“概念验证+深度孵化+精准投资”业务模式，围绕产业链部署创新链、资金链、人才链、服务链、政策链，积极推动“燕缘科创生态”建设，为科技成果转化最早一公里提供全方位高价值服务，努力建设成具有国际影响力的一流科技创新平台。
招聘岗位｜半导体行业科技发展总监
（一）岗位职责
主导负责半导体相关行业的项目孵化，孵化方式包括“拨改投”、孵投联动、资源置换占股等，主要工作包括行业研究、项目挖掘、项目尽职调查、项目合作协议核心条款商定等；专业能力上深度了解所负责行业，能寻找判断优质项目，并完成年度项目引入指标;
孵化项目监督管理：半导体相关行业研发中心等内设机构的运营情况监督管理，推进横向合作、科技成果转化、科创企业培育等；孵化项目成立的标的公司且中心入股的投后管理，及适时退出；
构建和维护行业早期项目库与投资机构库，协调沟通双方需求，挖掘合作机会，持续推动项目落地并维护长期合作关系；
与燕缘科创生态其他组成部分，包括燕缘创投、燕缘孵化器等保持联动；
科技发展部业务相关接待、文书、材料梳理等工作。
（二）任职要求
本科及以上学历，理工科专业或金融、法律等相关专业优先；
3年以上半导体相关行业投融资经验，有科技成果转化经验者优先；
具备优秀的办公软件使用技能，能独立输出专业级材料，逻辑清晰、数据敏感；
出色的项目管理和沟通交流能力，有创业热情。
（三）加分项
对硬科技领域具有深度认知；
拥有CPA/CFA/法律职业资格证书者优先；
英语流利，可支持跨境项目。
（四）工作地点
上海市浦东新区海洋二路88弄创新魔坊二期1号楼，上海临港北京大学国际科技创新中心
Automotive Wiring Harness Installation & Maintenance Guide
Wiring Methods: Molded vs Field-Assembled Harnesses
Molded harnesses are manufactured using thermoplastic materials (TPU/PVC) bonded to terminals via high-temperature injection molding. This method ensures uniform sealing with specialized adhesives (e.g., A3228 water-based glue) pretreated on metal/plastic surfaces. Key advantages include:
Consistency: High repeatability in waterproof performance due to automated production.
Durability: Resistant to vibration and environmental stress.
However, mold costs are high, and design flexibility is limited to pre-engineered configurations.
Field-Assembled Harnesses
Field assembly involves branch or butt splicing, often using:
Insulation-piercing connectors for quick joins.
Resin potting (A/B epoxy mixtures) for post-splice sealing, requiring strict curing temperature control.
Advantages include adaptability for repairs, but manual processes increase error risks (e.g., incorrect wire lengths or poor adhesive application).
Waterproofing Techniques: Design & Materials
Grommet Design
IPX7+ connectors are mandatory for wet zones (engine bay, door panels).
Rubber grommets (EPDM) dominate 95% of applications due to:
Temperature resilience (-50°C to 150°C).
UV/ozone resistance.
Sealing methods:
Overmolding: TPU/TPE encapsulation at wire-entry points.
Heat-shrink tubing: Covers solder joints and terminals.
Material Selection
Wet zones: High-temperature wires (e.g., engine harnesses) with silicone-based seals.
Dry zones: Standard PVC insulation, but outdoor-exposed sections still require rubberized grommets.
Troubleshooting Common Failures
Poor Contact Issues
Causes:
Insufficient terminal insertion force (<5N retention force).
Loose crimps or oxidation.
Solutions:
Verify "click" sound during connector mating (5–7dB above ambient noise).
Use manufacturer-matched terminals to avoid tolerance mismatches.
Water Ingress Failures
Case 1: Molded Joint Leaks
Root cause: Contaminated surfaces (oil/dust) during adhesive application.
Fix: Clean substrates with isopropyl alcohol before molding.
Case 2: Grommet Seal Failure
Root cause: Incorrect grommet-to-wire diameter ratio (D2–D3 ≥0.3mm gap required).
Fix: Pressure-test seals at 20kPa for 5 seconds post-installation.
Maintenance Best Practices
Inspection: Check for cracked insulation or corroded terminals quarterly.
Testing: Submerge connectors for 30 minutes to validate IP ratings.
Documentation: Track splice locations and adhesive batch numbers for traceability.
By integrating these protocols, harness reliability can meet automotive-grade standards.
Waterproof Connectors for Automobiles
Modern automotive waterproof connectors achieve reliable moisture resistance through multi-layered protection strategies. The primary defense involves elastomeric seals (silicone/EPDM rubber rings) that compress during mating to fill microscopic gaps between interfaces. High-performance thermoplastics like PBT and nylon 66 are commonly used for housings due to their chemical resistance and dimensional stability in engine compartments.
Advanced manufacturing techniques enhance sealing effectiveness:
Ultrasonic welding creates hermetic bonds between plastic components without adhesives, preventing water ingress paths
Liquid silicone injection molding (LSR) produces seamless gaskets with superior elasticity compared to traditional rubber compounds
Dual-material overmolding combines rigid structural elements with flexible sealing layers in a single process
The Ingress Protection (IP) code defines connector waterproofing capabilities through standardized testing. Key ratings for automotive use include:
Withstands temporary immersion (1m depth for 30 minutes)
Typical applications: Door harness connectors, infotainment systems
Testing method: Submersion in water tank with post-test insulation resistance verification
IP68 allows continuous underwater operation (specified depth/time by manufacturer)
IP69K adds high-pressure (80-100 bar), high-temperature (80°C) steam jet resistance
Critical for: Battery pack HVIL connectors, wheel speed sensors
While achieving high IP ratings, connectors must maintain performance across:
Temperature cycling (-40°C to +125°C for underhood components)
Chemical exposure (road salt, brake fluid, fuels)
Vibration (20-2000Hz frequency range per ISO 16750-3)
Emerging solutions include nano-coatings on PCB contacts and self-healing elastomers for long-term seal integrity. These innovations address the growing demands of electric vehicles where waterproof reliability directly impacts safety systems.
中国空空导弹研究院，创建于1961年，隶属于中国航空工业集团有限公司，是国家专业从事空空导弹发射装置、地面检测设备和机载光电设备及其派生型产品研制及批量生产的基地，是我国国防科技工业重点研究院所。
招聘专业：
人工智能方向
量子信息方向
雷达信号、多模信号处理方向
火箭发动机、火炸药方向
数据链通信方向
热防护方向
扩散焊方向
工作地点：
洛阳、北京、成都、上海
应聘要求：
学历：硕士学历及以上，博士优先
年龄：45 岁以下
热爱国防军工事业，具有较强的科研创新和解决问题能力，良好的团队合作意识和开拓创新精神，特别优秀者条件可适当放宽。
招聘流程详情请点站外链接了解。
How Two-Pin Connectors Work:Simplicity and Reliability in Low-Voltage Systems
In the world of low-voltage electrical systems,simplicity often translates to reliability.Two-pin connectors exemplify this principle,offering robust performance in applications ranging from landscape lighting to automotive accessories.Designed for 12V/24V environments,these connectors minimize complexity while maximizing durability.This article explores their design philosophy,operational advantages,and why they outperform multi-pin alternatives in critical scenarios.
The Anatomy of Two-Pin Connectors
Polarized Design:Error-Proofing Connections
A hallmark of two-pin connectors is their polarized configuration.By incorporating asymmetrical shapes,keyed slots,or color-coded terminals,they prevent reverse mating—a common issue in unmarked connectors.For example,in outdoor LED lighting systems,polarized connectors ensure correct phase alignment,eliminating flickering or short circuits caused by inverted wiring.This feature is especially vital in DIY installations where user error is more likely.
Contact Resistance Optimization
High-quality two-pin connectors minimize electrical losses through precision engineering.Contacts are often plated with materials like gold or tin to reduce oxidation and ensure stable conductivity.For low-voltage systems(12V or 24V),even a minor increase in contact resistance can lead to significant voltage drop over long cable runs.By maintaining resistance below 5 milliohms per contact,these connectors preserve energy efficiency and reduce heat generation.
Ideal Applications for 12V/24V Systems
Solar-Powered Lighting
In off-grid solar installations,two-pin connectors simplify connections between panels,batteries,and LED fixtures.Their low-profile design resists environmental stress,while the absence of redundant pins reduces points of failure—critical in remote,maintenance-free setups.
Automotive Accessories
From interior ambient lighting to trailer wiring harnesses,two-pin connectors handle moderate currents(typically up to 10A)without bulk.Their sealed variants withstand engine bay temperatures and road salt exposure,outperforming unshielded multi-pin alternatives.
Modular Outdoor Systems
Landscape lighting designers favor two-pin connectors for daisy-chaining path lights or water features.The streamlined design allows quick reconfiguration,enabling homeowners to expand or rearrange fixtures without specialized tools.
Two-Pin vs.Multi-Pin Connectors:A Pragmatic Comparison
Complexity
Multi-pin connectors(e.g.,4-pin or 8-pin)excel in data transmission or high-power applications but introduce unnecessary complexity for basic low-voltage circuits.Each additional pin raises the risk of misalignment,cross-talk,or pin deformation.Two-pin designs eliminate redundant contacts,streamlining both manufacturing and field repairs.
Cost Efficiency
Simpler construction translates to lower costs.A two-pin connector typically uses 30–50%less material than a four-pin equivalent.In large-scale projects like commercial lighting,this difference significantly reduces overall wiring expenses.
Failure Rates
With fewer contact points,two-pin connectors inherently reduce failure risks.Research shows that multi-pin connectors in outdoor environments experience up to 40%higher failure rates due to dirt accumulation in unused ports or uneven pin wear.Two-pin designs avoid these pitfalls by focusing on essential electrical pathways.
Future Innovations in Two-Pin Connector Technology
Emerging trends aim to enhance their utility without sacrificing simplicity:
Integrated Smart Sensors:Micro-embedded chips could monitor contact health,alerting users to corrosion or loose connections via Bluetooth.
Self-Healing Seals:Polymers that automatically repair minor cracks in waterproof housings could extend service life in harsh climates.
Eco-Friendly Materials:Biodegradable thermoplastic housings are being tested to reduce environmental impact without compromising durability.
Two-pin connectors are the unsung heroes of low-voltage systems,marrying minimalist design with steadfast reliability.Their polarized layouts and optimized contact engineering address the core needs of 12V/24V applications,while their cost and reliability advantages make them superior to multi-pin alternatives for basic power delivery.As technology evolves,these connectors will continue to underpin innovations in renewable energy,automotive systems,and smart infrastructure—proving that sometimes,less truly is more.
【薪资待遇】
1、长期工月结，月保底到手工资6800---7500 ；短期工日结，日结220—240一天，压五天，五天后一天一结，人走帐清
2、社会保障：公司为员工缴纳五险一金。
3、工资以打卡方式每月10号准时发放，工作满一个礼拜可以随时预支工资！
【工作内容】
1、普工、操作工、质检、检测、组装、包装、仓库管理等岗位都在招聘，看您想工作哪一种！
2、都是轻松坐班，长白班，两班倒都有，工作环境舒适，车间常年恒温，不穿无尘服
【任职要求】
身体健康，16-55周岁，男女不限
【食宿安排】
1、包吃包住，进厂当天，统一发饭卡，刷卡吃饭。
2、饭堂提供各风味主食和清真食堂窗口，持厂牌即可刷卡就餐。
3、免费提供住宿，4-6人一间。宿舍配备独立卫生间、洗澡间、空调、热水器，WIFi，等用品，待遇福利超好
gateface专发，请勿抄袭
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