Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Low-Complexity System and Algorithm for an Emergency Ventilator Sensor
  and Alarm   In response to the shortage of ventilators caused by the COVID-19 pandemic,
many organizations have designed low-cost emergency ventilators. Many of these
devices are pressure-cycled pneumatic ventilators, which are easy to produce
but often do not include the sensing or alarm features found on commercial
ventilators. This work reports a low-cost, easy-to-produce electronic sensor
and alarm system for pressure-cycled ventilators that estimates clinically
useful metrics such as pressure and respiratory rate and sounds an alarm when
the ventilator malfunctions. A low-complexity signal processing algorithm uses
a pair of nonlinear recursive envelope trackers to monitor the signal from an
electronic pressure sensor connected to the patient airway. The algorithm,
inspired by those used in hearing aids, requires little memory and performs
only a few calculations on each sample so that it can run on nearly any
microcontroller.

15
The categories of this paper are: nucl-ex
23
The categories of this paper are: solv-int
31
The categories of this paper are: ao-sci
10
The categories of this paper are: q-bio
35
The categories of this paper are: mtrl-th
18
The categories of this paper are: econ
0
The categories of this paper are: hep-ph
12
The categories of this paper are: nucl-th
22
The categories of this paper are: chao-dyn
29
The categories of this paper are: funct-an
11
The categories of this paper are: hep-lat
6
The categories of this paper are: astro-ph
14
The categories of this paper are: math-ph
17
The categories of this paper are: q-fin
8
The categories of this paper are: hep-ex
1
The categories of this paper are: cs