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- 輸入計(jì)數(shù)、類型和速度
- 16點(diǎn)源；2~512mS可選
- 電源電壓和開/關(guān)電壓
- 18-30VDC；開 >1.2mA 關(guān)<0.3mA
- 目前的消費(fèi)
- 系統(tǒng)50mA；場(chǎng) 190mA
- 特殊能力
- 脈沖計(jì)數(shù)選項(xiàng)
特征
- PAC8000 I/O 是一個(gè)完全模塊化的 I/O 解決方案，適用于通用和危險(xiǎn)區(qū)域應(yīng)用。它提供多種 I/O 功能，并具有開放式架構(gòu)，通過(guò)選擇適當(dāng)類型的總線接口模塊 (BIM) 或控制器，可以與各種不同的現(xiàn)場(chǎng)總線進(jìn)行通信。
- 現(xiàn)場(chǎng)端子（每個(gè) I/O 模塊一個(gè)）卡在載體上并接受現(xiàn)場(chǎng)接線，無(wú)需額外的端子或連接。如果在現(xiàn)場(chǎng)損壞，它們可以很容易地更換。全面的機(jī)械鍵控系統(tǒng)確保設(shè)備安全。
- 載體通過(guò)提供安裝到平板或 T 型或 G 型 DIN 導(dǎo)軌上來(lái)形成 PAC8000 的物理和電氣主干。它們支持和互連 BIM 或控制器、電源、I/O 模塊和現(xiàn)場(chǎng)終端，并承載內(nèi)部 Railbus 的地址、數(shù)據(jù)和電源線
- 返回內(nèi)部共用
- 脈沖計(jì)數(shù)選項(xiàng)
- 需要 24 V 直流總線現(xiàn)場(chǎng)電源
利用 MEMS 技術(shù)進(jìn)行壓力傳感
總而言之，壓力傳感器有很多不同的類型，而 MEMS 技術(shù)的進(jìn)步使半導(dǎo)體行業(yè)能夠大批量生產(chǎn)經(jīng)濟(jì)的壓力傳感器。
小尺寸、低功耗、嵌入式補(bǔ)償和堅(jiān)固的封裝使 MEMS 壓力傳感器能夠用于許多以前可能的工業(yè)應(yīng)用。
現(xiàn)代工業(yè)系統(tǒng)使用多種傳感器技術(shù)來(lái)部署運(yùn)行效率更高、能源浪費(fèi)更少的系統(tǒng)。
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行業(yè)文章是一種內(nèi)容形式，允許行業(yè)合作伙伴以編輯內(nèi)容不太適合的方式與 All About Circuits 讀者分享有用的新聞、消息和技術(shù)。
The second sensor constantly measures the ambient air pressure, which can then be subtracted from the pressure value to obtain the gauge pressure in the tube.
Using Pressure Sensors for Drone and Robotics Applications
Drone and robotics applications are other key applications for pressure sensors. Drones use barometric pressure sensors to detect altitude, which is extremely useful for Altitude Hold.
Thanks to the sensor's small size, low power and noise, high accuracy, and immunity to vibration, modern pressure sensors can detect an absolute altitude of <3 m, with a minimum detectable change in altitude of just a few cm.
To avoid collisions, the altitude or z-axis (shown in Figure 4) component is extremely important in cases where the drone must fly in permitted altitudes or ‘slots.'
This approach puts two absolute pressure sensors in a large and small cavity and detects the pressures in each. With any airflow, the pressure is higher in the small section and lower in the larger cavity. Measuring the difference in pressure across the pipe allows the calculation of the flow rate.
Leveraging MEMS Technology for Pressure Sensing
All in all, there are many different types of pressure sensors, and the progress of MEMS technology has helped enabled the semiconductor industry to make economic pressure sensors in high volumes.
The small size, low power consumption, embedded compensation, and robust packaging allow MEMS pressure sensors to be used in many industrial applications that were possible before.
Modern industrial systems use a mixture of sensor technologies to deploy systems that run more efficiently with less wasted energy.
All images used courtesy of STMicroelectronics
Industry Articles are a form of content that allows industry partners to share useful news, messages, and technology with All About Circuits readers in a way editorial content is not well suited to. All Industry Articles are subject to strict editorial guidelines with the intention of offering readers useful news, technical expertise, or stories. The viewpoints and opinions expressed in Industry Articles are those of the partner and not necessarily those of All About Circuits or its writers.
