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: 四虎影视在线播放 | 精品无人区乱码一区二区 | 99激情网| 久久国产精品2020盗摄 | 国产草草 | 欧美成人天天综合在线视色 | 国产精品成人在线 | 国产精品亚洲一区在线播放 | 国产主播福利在线 | 精品视频一区二区三区免费 | 国产精品久久久久影院色 | 91国内精品线免费播放 | 中文字幕中韩乱码亚洲大片 | 久久福利在线 | 日韩欧美视频一区二区在线观看 | 欧美日本在线 | www.中文字幕.com | 999yy成年在线视频免费看 | 日本特级aⅴ一级毛片 | 一级毛片免费在线观看网站 | 国产精品视频成人 | 牛牛色婷婷在线视频播放 | 大伊香蕉在线精品不卡视频 | 奇米影视四色狠狠888俺去啦 | 米奇777第四久久久99 | 91精品啪在线观看国产色 | 人人干视频在线观看 | 一级午夜| 国产色站 | 亚洲va在线va天堂va四虎 | 99在线热视频只有精品免费 | 国产中文久久精品 | 久久久久国产精品免费免费 | 色天使色婷婷在线影院亚洲 | 伊人久久在线 | 91亚洲最新精品 | 欧美日韩色黄大片在线视频 | 精品免费国产一区二区女 | 欧美视频亚洲视频 | 亚洲免费观看视频 | 亚洲原创区 |