# US 11,442,052 B2 · VOC detecting and warning method > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,442,052 B2 - Document ID: US11442052B2 - Status: Granted - Kind: B2 - Application number: 16/211,813 - Filed: 2018-12-06 - Published: 2019-06-27 - Granted: 2022-09-13 - Earliest claimed: 2017-12-25 - Assignees: Microjet Technology Co., Ltd. - Applicants: Microjet Technology Co., Ltd. - Inventors: Hao-Jan Mou; Ta-Wei Hsueh; Li-Pang Mo; Chi-Feng Huang; Yung-Lung Han; Wei-Ming Lee - Web page: https://patentgrep.com/patent/US11442052B2 ## CPC - G01N 33/0063: {using a threshold to release an alarm or displaying means} - F16K 17/36: actuated in consequence of extraneous circumstances, e.g. shock, change of position - G01N 33/0011: {Sample conditioning (preparing specimens for investigation G01N1/28)} - G01N 33/0047: {Organic compounds} - F24F 2110/66: Volatile organic compounds [VOC] - G01N 33/0068: {using a computer specifically programmed} - Y02B 30/70: Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating - G01N: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES (measuring or testing apparatus or processes other than immunoassay, involving enzymes or microorganisms C12M, C12Q) - F16K: VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING {(devices for emptying and evacuating the excess liquid in valves or conduits F16L55/07)} - F24F: AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING (removing dirt or fumes from areas where they are produced B08B15/00; vertical ducts for carrying away waste gases from buildings E04F17/02; tops for chimneys or ventilating shafts, terminals for flues F23L17/02) - Y02B: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS ## Abstract A VOC detecting and warning method is provided. Firstly, an actuating-and-sensing module having a gas transportation actuator and a gas sensor is provided. Then, the gas transportation actuator guides a specified amount of gas to the gas sensor for obtaining plural monitored values, each of which is generated according to a result of detecting volatile organic compounds of the gas in each monitoring time interval by the gas sensor. All the monitored values obtained in a unit time period are added together and calculated, so that an average comparison value is obtained. If the average comparison value is determined greater than an injury threshold defined according to the VOC inhalation amount affecting the health of a human body, the actuating-and-sensing module issues a warning notification to notify the user to take protective measures. ## Claims ### Claim 1 A VOC detecting and warning method, comprising steps of: (a) providing an actuating-and-sensing module comprising a gas transportation actuator and a gas sensor, wherein the gas transportation actuator and the gas sensor are disposed on a carrier; (b) guiding a specified amount of gas to the gas sensor by an outlet channel of the gas transportation actuator and obtaining a monitored value generated according to a result of detecting a volatile organic compound of the specified amount of the gas in each monitoring time interval by the gas sensor; (c) calculating all the monitored values obtained in a unit time period to obtain an average comparison value; and (d) determining whether or not the average comparison value is greater than an injury threshold and issuing a warning notification by the actuating-and-sensing module if the average comparison value is greater than the injury threshold. ### Claim 2 (depends on 1) The VOC detecting and warning method according to claim 1, further comprising: issuing the warning notification by the actuating-and-sensing module if any of the monitored values is determined greater than an instant injury threshold. ### Claim 3 (depends on 1) The VOC detecting and warning method according to claim 1, wherein the specified amount of the gas guided by the gas transportation actuator is in the range between 1 liter and 14 liters per minute in average. ### Claim 4 (depends on 1) The VOC detecting and warning method according to claim 1, wherein the actuating-and-sensing module further comprises: a microprocessor processing the monitored values to generate output data and controlling the gas transportation actuator to actuate; and a transmission module transmitting the output data to a connection device, so that information carried by the output data is displayed, stored and transmitted by the connection device. ### Claim 5 (depends on 4) The VOC detecting and warning method according to claim 4, wherein the warning notification is performed by the connection device. ### Claim 6 (depends on 4) The VOC detecting and warning method according to claim 4, wherein the connection device is a display device with a wired communication module for displaying the warning notification. ### Claim 7 (depends on 6) The VOC detecting and warning method according to claim 6, wherein the transmission module is a wired transmission module, and the wired transmission module is at least one selected from the group consisting of a USB transmission module, a mini-USB transmission module and a micro-USB transmission module. ### Claim 8 (depends on 4) The VOC detecting and warning method according to claim 4, wherein the connection device is a display device with a wireless communication module for displaying the warning notification. ### Claim 9 (depends on 8) The VOC detecting and warning method according to claim 8, wherein the transmission module is a wireless transmission module, and the wireless transmission module is at least one selected from the group consisting of a Wi-Fi transmission module, a Bluetooth transmission module, a radio frequency identification transmission module and a near field communication transmission module. ### Claim 10 (depends on 4) The VOC detecting and warning method according to claim 4, wherein the connection device is a portable electronic device with a wireless communication module for performing the warning notification by providing an image, a sound effect, a light effect or a vibration effect. ### Claim 11 (depends on 1) The VOC detecting and warning method according to claim 1, wherein the gas transportation actuator comprises: a gas inlet plate having at least one inlet, at least one convergence channel and a central cavity defining a convergence chamber, wherein the at least one inlet allows the gas to flow in, and wherein the convergence channel is spatially corresponding to the inlet and guides the gas flowing in the inlet to the convergence chamber; a resonance plate having a central aperture and a movable part, wherein the central aperture is spatially corresponding to the convergence chamber and the movable part surrounds the central aperture; and a piezoelectric actuator aligned with the resonance plate, wherein a gap is formed between the resonance plate and the piezoelectric actuator to define a first chamber, so that the gas flowing in the at least one inlet of the gas inlet plate is converged to the central cavity along the at least one convergence channel and flows into the first chamber through the central aperture of the resonance plate when the piezoelectric actuator is enabled, whereby the gas is further transported through a resonance between the piezoelectric actuator and the movable part of the resonance plate. ### Claim 12 (depends on 11) The VOC detecting and warning method according to claim 11, wherein the piezoelectric actuator comprises: a suspension plate having a first surface and a second surface, wherein the suspension plate is permitted to undergo a bending vibration; an outer frame arranged around the suspension plate; at least one bracket connected between the suspension plate and the outer frame for elastically supporting the suspension plate; and a piezoelectric plate, wherein a length of a side of the piezoelectric plate is smaller than or equal to a length of a side of the suspension plate, and the piezoelectric plate is attached on the first surface of the suspension plate, wherein when a voltage is applied to the piezoelectric plate, the suspension plate is driven to undergo the bending vibration. ### Claim 13 A VOC detecting and warning method, comprising steps of: (a) providing at least one actuating-and-sensing module comprising at least one gas transportation actuator and at least one gas sensor, wherein the at least one gas transportation actuator and the at least one gas sensor are disposed on a carrier; (b) guiding a specified amount of gas to the gas sensor by an outlet channel of the gas transportation actuator and obtaining at least one monitored value generated according to a result of detecting at least one volatile organic compound of the specified amount of the gas in each monitoring time interval by the gas sensor; (c) calculating all the monitored values obtained in at least one unit time period to obtain at least one average comparison value; and (d) determining whether or not the average comparison value is greater than at least one injury threshold and issuing at least one warning notification by the actuating-and-sensing module if the average comparison value is greater than the injury threshold.