文档介绍：ERROR-PROOFING TECHNIQUES 防错技术
(Poka-Yoke) CONCEPT 概念
SENSOR INFORMATION 传感器知识:
BASIC TYPES OF SENSORS 传感器基本类型
• Discrete sensors
• Analog sensors
TYPES OF PRESENCE SENSORS
• Physical contact 物理接触
• No physical contact 非物理接触
TYPES OF NON-CONTACT SENSORS 非接触传感器
• Reed relays 簧片继电器
• Inductive 感应性
• Capacitive 电容性
• Photoelectric sensors 光电传感器
ADVANTAGES OF THE VARIOUS TYPES 各类传感器的利弊
• Functionality 功能
• Costs 成本
• Areas of application 应用区域
- 01 © 1995 General Motors Corporation. All rights reserved.
1/27/99

ERROR-PROOFING TECHNIQUES 防错技术
(Poka-Yoke) CONCEPT 概念
BASIC TYPES OF SENSORS 传感器基本类型:
ANALOG SENSORS
• Answer the question: “Where is the part?”
针对的问题“零件在哪儿”
or
或
•“To what level have we filled the container?”
“料箱内已摆放的货物高度”
DISCRETE SENSORS
• The part is present or is not present.
零件是否存在
• Most frequently asked question in a manufacturing operation.
更多情况下针对制造过程中产生的问题
- 02 © 1995 General Motors Corporation. All rights reserved.
1/27/99

ERROR-PROOFING TECHNIQUES 防错技术
(Poka-Yoke) CONCEPT 概念
TYPES OF PRESENCE SENSORS:
PHYSICAL CONTACT 物理接触
• . Limit switches 如限位开关
• Advantages - Can carry more current
优势能承担较高的电流
- Gap between terminals
终端间有间歇
NO PHYSICAL CONTACT 非物理接触
• Advantages - No physical contact
优势非物理接触
- Better for counting sensitive surfaces,
. painted or polished surfaces
有利于敏感性外表面如油漆或抛光表面
- No moving parts
不造成零件移动
- Faster
响应速度更快
- 03 © 1995 General Motors Corporation. All rights reserved.
1/27/99

ERROR-PROOFING TECHNIQUES 防错技术
(Poka-Yoke) CONCEPT 概念
TYPES OF NON-CONTACT SENSORS 非接触传感器类型:
REED RELAYS 簧片继电器
• Target is ic
磁性目标
• Will not respond to non-ic targets with reliability.
对于非磁性目标缺乏可靠性
INDUCTIVE 感应性
• Based on metal targets; will not respond to non-metallic
targets with high reliability.
适用于金属目标对于非金属目标缺乏可靠性
CAPACITIVE 电容性
• Cannot distinguish between the real targ