国产人妻xxxx精品hd-国产人妻大战黑人20p-国产人妻丰满熟妇嗷嗷叫-国产人妻高清国产拍精品-国产人妻黑人一区二区三区-国产人妻精品久久久久野外

深圳鑫志科技有限公司

News

聯系我們

Shenzhen Xinzhi Technology Co., Ltd

Address: 705, Building 4, Tongtai Times Center, Fuhai Street, Bao'an District, Shenzhen
Phone: 86-755-2780-8770
Fax: 86-755-2780-9501
Email:xuzb@xzkj.net.cn
Website:http://m.ningbo123.cn/

Industry dynamics
當前位置:首 頁 ? News ? Industry dynamics ? Analog compensation of sphygmomanometer scheme in pressure sensor

Analog compensation of sphygmomanometer scheme in pressure sensor

文章來源:鑫志科技 / 作者:鑫志科技 / 發表時間:2023-03-23

In the scheme of sphygmomanometer, pulse is detected by blood pressure sensor, and the sphygmomanometer sensor is a pressure sensor based on silicon Piezoresistive effect. Inflatable cuffs are used to block the blood flow of the upper arm artery. Due to the hemodynamic effects of the heartbeat, pressure fluctuations synchronized with the heartbeat, known as pulse waves, will be superimposed on the cuff pressure. When the cuff pressure is much higher than the systolic pressure, the pulse wave disappears. As the pressure on the cuff decreases, a pulse begins to appear. When the cuff pressure drops from above systolic blood pressure to below systolic blood pressure, the pulse wave will suddenly increase. When the average pressure is reached, it then decays as the cuff pressure decreases. Oscillographic blood pressure measurement estimates blood pressure based on the relationship between pulse wave amplitude and cuff pressure. The average pressure corresponds to the maximum pulse wave, while systolic and diastolic blood pressure are determined by the ratio of the maximum pulse wave amplitude, respectively.

血壓計方案

For the low-cost sensor scheme of electronic sphygmomanometer, many manufacturers choose constant current source driving mode to obtain temperature output characteristics without calibration. According to the industrial standard of electronic sphygmomanometer, within the temperature range of 5-45 ℃, the error value is ± 2 mmhg, which meets the application requirements.

The piezoresistive silicon pressure chip in the blood pressure sensor adopts advanced sensing technology, which brings smaller chip size, more stable performance, better consistency, and better linearity. The sphygmomanometer sensor generally needs to compensate the bias and sensitivity of the sensor itself through analog or digital methods. For sphygmomanometer manufacturers, after selecting a specific sensor, the sphygmomanometer scheme needs to convert the analog output of the bridge device into digital output.

The analog compensation of the sphygmomanometer scheme increases the constant resistance outside the bridge arm of the silicon pressure sensor to eliminate the bias and sensitivity of the circuit. After determining the circuit in this way, the selection surface of the sensor will be very narrow and can only be selected from products with fixed gears. Digital compensation does not require the selection of specific resistors or variable resistance components to adjust the zero bias and sensitivity of the sensor, thus eliminating the need for two electronic components. This scheme is compatible with sensors with zero bias and sensitivity within the corresponding range.

咨詢

QQ

在線客服

服務時間:9:00-18:00

電話

服務咨詢熱線:

0755-2780-8770

微信

二維碼

微信咨詢

郵箱

電子郵箱

xuzb@xzkj.net.cn

主站蜘蛛池模板: 国产系列欧美系列日韩系列在线 | 国产dvd毛片在线视频 | 久久香蕉国产线看观看亚洲卡 | 最新黄色免费网站 | 国产成人综合网在线观看 | 中文字幕精品一区二区日本大胸 | 色婷婷久久合月综 | 国产精品99爱免费视频 | 久久骚| 亚洲日日操 | 99热在线国产 | 国产美女视频做爰 | 欧美综合另类 | 无码免费一区二区三区免费播放 | 中文在线不卡 | 老妇毛片久久久久久久久 | 92自拍视频 | 免费看欧美一级特黄α大片 | 久久久精品视频免费观看 | 国产精品福利在线观看免费不卡 | 青青热久免费精品视频精品 | 天天操狠狠操 | 五月狠狠亚洲小说专区 | 色www 永久免费网站 | 美女视频黄是免费的 | 久久爱.www | 国产精品第九页 | 亚洲香蕉 | 久久国产免费观看精品1 | 久久久久嫩草影院精品 | 国产综合久久一区二区三区 | 香蕉网站在线观看 | 亚洲精品视频二区 | 一本一道波多野结衣一区二区 | 一二三四社区在线播放 | 久久久国产99久久国产一 | 国产成人一区二区三区 | 91不卡 | 中文字幕2区 | 国产a级网站 | 香蕉色综合 |