WO2016090897A1 - 一种风速测试的方法和设备 - Google Patents

一种风速测试的方法和设备 Download PDF

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WO2016090897A1
WO2016090897A1 PCT/CN2015/082664 CN2015082664W WO2016090897A1 WO 2016090897 A1 WO2016090897 A1 WO 2016090897A1 CN 2015082664 W CN2015082664 W CN 2015082664W WO 2016090897 A1 WO2016090897 A1 WO 2016090897A1
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wind speed
pressure
air
wind
testing
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PCT/CN2015/082664
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French (fr)
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闫文明
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歌尔声学股份有限公司
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Priority to US15/517,478 priority Critical patent/US20170307647A1/en
Publication of WO2016090897A1 publication Critical patent/WO2016090897A1/zh

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P5/00—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft
    • G01P5/14—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring differences of pressure in the fluid

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  • the present invention relates to the field of mobile terminal technologies, and in particular, to a method and device for wind speed testing.
  • a microphone In existing mobile phones and wearable devices, a microphone is generally used as a test sensor for wind speed testing, and the principle is to calculate the airflow velocity by detecting the vibration frequency of the diaphragm caused by the gas. Due to the thin diaphragm and high sensitivity of the microphone, the instantaneous high voltage is easy to damage and break, and in the environment with a lot of air dust, the dust will block the microphone and the calculation accuracy is poor.
  • the invention provides a method and a device for testing a wind speed to solve the problem that the microphone test has poor wind speed accuracy and is easy to damage the microphone in the prior art.
  • the invention provides a method of wind speed testing, comprising:
  • the pressure hole is connected to the outside, and is specially set on the mobile device or designed for the existing opening;
  • the obtaining the current wind speed according to the corresponding relationship between the wind speed v and the dynamic pressure PP 0 includes:
  • the method further includes:
  • the mobile device comprises a mobile phone and a wearable device.
  • the dynamic pressure of the wind is obtained by obtaining the static pressure of the inner cavity of the mobile device and the total pressure of the wind, and the current pressure is obtained according to the corresponding relationship between the wind speed and the dynamic pressure.
  • the technical solution can effectively improve the accuracy of the wind speed test, and does not cause damage to the relevant components of the mobile device, which is completely different from the method of testing the wind speed by using the microphone in the prior art.
  • the air density in any environment is calculated by measuring the air temperature and humidity to replace the air density constant at normal temperature and pressure to achieve the purpose of further improving the accuracy of the wind speed test.
  • the invention provides a wind speed testing device comprising:
  • a pressure sensor disposed in the pressure hole cavity of the wind speed testing device, the pressure hole is connected to the outside, and is separately disposed on the mobile device or designed as an existing opening; and the static pressure P 0 for obtaining the cavity of the pressure hole is And aligning the pressure hole with the wind direction to obtain a total pressure P of the wind;
  • the wind speed obtaining unit is configured to obtain the current wind speed according to the corresponding relationship between the wind speed v and the dynamic pressure PP 0 .
  • the wind speed obtaining unit is specifically configured according to a formula Calculate the current wind speed, where ⁇ is the air density.
  • the wind speed testing device further includes:
  • a humidity sensor for measuring a vapor pressure e in the air
  • a temperature sensor for measuring the air temperature T
  • both the temperature sensor and the humidity sensor are placed in the inner cavity of the pressure port of the wind speed testing device.
  • the temperature sensor and the pressure sensor are integrated on the same chip; or the temperature sensor, the humidity sensor and the pressure sensor are all integrated on the same chip.
  • the wind speed test is set in a mobile device, the mobile device comprising a mobile phone, a wearable device.
  • the device of the technical solution measures the total pressure and the static pressure of the wind through the pressure sensor, and obtains the current wind speed according to the corresponding relationship between the wind speed and the dynamic pressure by the wind speed acquiring unit.
  • the technical solution can effectively improve the accuracy of the wind speed test, and does not cause damage to related components of the mobile device, and is completely different from the prior art device that tests the wind speed by using a microphone.
  • the air temperature and humidity are respectively measured by using a temperature sensor and a humidity sensor, and the air density in any environment is calculated according to the temperature and humidity of the air to replace the air density constant at normal temperature and pressure to further improve the wind speed test.
  • the purpose of precision is to calculate the air density in any environment according to the temperature and humidity of the air to replace the air density constant at normal temperature and pressure to further improve the wind speed test.
  • FIG. 1 is a flowchart of a method for testing a wind speed according to an embodiment of the present invention
  • FIG. 2 is a schematic structural diagram of a wind speed testing device according to an embodiment of the present invention.
  • FIG. 1 is a flowchart of a method for testing a wind speed according to an embodiment of the present invention, where the method includes:
  • the mobile device can be a mobile phone, a wearable device, or the like. Since the cross-sectional area of the cavity of the pressure hole excessively affects the wind resistance, the accuracy of the wind speed test is further affected.
  • the inner diameter of the pressure hole inner cavity of the mobile device is generally set to about 3.5 mm, but is not limited thereto, and the cross-sectional area of the inner cavity can be specifically set according to the design structure and application requirements of the mobile device.
  • the pressure hole may be specially configured in accordance with the design structure of the mobile device, and other openings of the mobile device itself, such as a headphone hole, a power hole or other opening connected to the outside, may be used as the pressure hole in this embodiment. In order to make the mobile device look simple and beautiful.
  • the pressure hole is connected to the outside, and the pressure hole is aligned with the wind direction to obtain the total pressure P of the wind.
  • the air density in the present embodiment may be a standard air density at a constant state of 1.29kg / m 3, the air density may be at ambient temperature and pressure constant 1.205kg / m 3, may be obtained by other methods The density of air in any environment.
  • the air density ⁇ in any environment is obtained by the following method:
  • the method of the technical solution of the embodiment can accurately measure the air density by measuring the water vapor pressure e and the air temperature T in the air of any environment, thereby improving the accuracy of the wind speed test.
  • the device for setting the wind speed test is disposed in a mobile device, and includes:
  • the pressure sensor 21 is placed in the pressure hole inner cavity of the wind speed testing device, the pressure hole is connected to the outside, and the existing design opening is specially set or utilized on the mobile device; the pressure sensor 21 is used to obtain the static pressure of the pressure hole cavity P 0 , and when the pressure hole is aligned with the wind direction, the total pressure P of the wind is obtained.
  • the wind speed obtaining unit 22 is configured to obtain the current wind speed according to the correspondence relationship between the wind speed v and the dynamic pressure PP 0 .
  • the wind speed obtaining unit 22 is configured to use a formula according to the formula Calculate the current wind speed, where ⁇ is the air density.
  • the wind speed testing device in this embodiment may be disposed in a mobile device including a mobile phone, a wearable device, and the like.
  • the wind speed testing device of this embodiment further includes:
  • a humidity sensor for measuring the vapor pressure e in the air.
  • a temperature sensor for measuring the air temperature T is
  • the wind speed acquisition unit 22 can also be based on a formula Calculate the wind speed.
  • both the temperature sensor and the humidity sensor of the present embodiment are placed in the pressure hole inner cavity of the wind speed test device to improve the accuracy of the obtained air density.
  • the temperature sensor and the pressure sensor of the embodiment are integrated on the same chip, and the temperature sensor, the humidity sensor and the pressure sensor are integrated on the same chip to save physical space and improve integration of the device.
  • the embodiment of the invention discloses a method and a device for testing the wind speed.
  • the total pressure of the wind and the static pressure are made poor to obtain the dynamic pressure of the wind;
  • the current wind speed is obtained according to the correspondence between the wind speed and the dynamic pressure.
  • the technical solution can effectively improve the accuracy of the wind speed test, and does not cause damage to related components of the mobile device, which is completely different from the prior art method of testing the wind speed by using a microphone.
  • the air density in any environment is calculated by measuring the air temperature and humidity to replace the air density constant at normal temperature and pressure to achieve the purpose of further improving the accuracy of the wind speed test.

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  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
  • Telephone Function (AREA)

Abstract

公开了一种风速测试的方法。包括：测得移动设备的压力孔内腔的静压力P 0(S100)，该压力孔连通外界；将压力孔对准风向，获得风的总压力P(S101)；根据风速v和动压力P-P 0的对应关系式，获得当前的风速(S102)。该风速测试方法通过根据风速和风的动压力的对应关系获得当前风速，可以有效地提高风速测试的精度，而且不会对移动设备的相关部件造成损坏。还公开了一种风速测试设备，包括：压力传感器(21)和风速获取单元(22)。

Description

一种风速测试的方法和设备 技术领域
本发明涉及移动终端技术领域，特别涉及一种风速测试的方法和设备。
发明背景
现有手机及可穿戴设备中通常利用麦克风作为风速测试的测试传感器，其原理为通过检测气体导致振膜的振动频率计算气流速度。由于麦克风的振膜薄、灵敏度较高，瞬间的高压易使其损坏破碎，而且在空气粉尘多的环境中粉尘会堵塞麦克风导致其计算精度较差。
发明内容
本发明提供了一种风速测试的方法和设备，以解决现有技术中麦克风测试风速精度差且易于损坏麦克风的问题。
为达到上述目的，本发明的技术方案是这样实现的：
一方面，本发明提供了一种风速测试的方法，包括：
测得移动设备的压力孔内腔的静压力P0；所述压力孔连通外界，在移动设备上专门设置或为已有设计开口；
将所述压力孔对准风向，获得风的总压力P；
根据风速v和动压力P-P0的对应关系式，获得当前的风速。
优选地，所述根据风速v和动压力P-P0的对应关系式，获得当前风速包括：
根据公式
Figure PCTCN2015082664-appb-000001
获得当前的风速，其中ρ为空气密度。
优选地，所述方法还包括：
测得空气中的水汽压e以及测得空气温度T；
根据公式
Figure PCTCN2015082664-appb-000002
计算出所述空气密度ρ，其中RB＝287.05J·kg-1·K-1为干空气的气体常数。
优选地，所述移动设备包括手机、可穿戴设备。
本技术方案的方法，首先通过获得移动设备内腔的静压力和风的总压力，将风的总压力和静压力做差获得风的动压力；然后根据风速和动压力的对应关系获得当前风速。本技术方案可以有效的提高风速测试的精度，而且不会对移动设备的相关部件造成损坏，完全不同于现有技术中利用麦克风测试风速的方法。
优选方案中，通过测得空气温度和湿度计算任何环境中的空气密度来代替常温常压下的空气密度常数，以达到进一步提高风速测试的精度的目的。
另一方面，本发明提供了一种风速测试设备，包括：
压力传感器，置于所述风速测试设备的压力孔内腔中，所述压力孔连通外界，在移动设备上单独设置或为已有设计开口；用于获得压力孔内腔的静压力P0，以及将所述压力孔对准风向，获得风的总压力P；
风速获取单元，用于根据风速v和动压力P-P0的对应关系式，获得当前的风速。
优选地，所述风速获取单元，具体用于根据公式
Figure PCTCN2015082664-appb-000003
计算出当前的风速，其中ρ为空气密度。
优选地，所述风速测试设备还包括：
湿度传感器，用于测得空气中的水汽压e；
温度传感器，用于测得空气温度T；
空气密度获取单元，用于根据公式
Figure PCTCN2015082664-appb-000004
计算出空气的密度ρ，其中RB＝287.05J·kg-1·K-1为干空气的气体常数。
优选地，所述温度传感器和所述湿度传感器都置于风速测试设备的压力孔的内腔中。
优选地，所述温度传感器和所述压力传感器集成在同一芯片上；或者所述温度传感器、所述湿度传感器和所述压力传感器都集成在同一芯片上。
优选地，所述风速测试设置在移动设备中，所述移动设备包括手机、可穿戴设备。
本技术方案的设备通过压力传感器测得风的总压力和静压力，通过风速获取单元根据风速和动压力的对应关系式获得当前风速。本技术方案可以有效的提高风速测试的精度，而且不会对移动设备的相关部件造成损坏，完全不同于现有技术利用麦克风测试风速的设备。
优选方案中，通过利用温度传感器和湿度传感器分别测得空气温度和湿度，根据空气的温度和湿度计算任何环境中的空气密度来代替常温常压下的空气密度常数，以达到进一步提高风速测试的精度的目的。
附图简要说明
附图用来提供对本发明的进一步理解，并且构成说明书的一部分，与本发明实施例一起用于解释本发明，并不构成对本发明的限制。在附图中：
图1为本发明实施例提供的风速测试的方法流程图；
图2为本发明实施例提供的风速测试设备结构示意图。
具体实施方式
为使本发明的目的、技术方案和优点更加清楚，下面将结合附图对本发明实施方式作进一步地详细描述。
图1为本发明实施例提供的风速测试的方法流程图，所述方法包括：
S100，测得移动设备的压力孔内腔的静压力P0。
其中，移动设备可以为手机、可穿戴设备等。由于压力孔内腔的横截面积过大会影响风阻，进一步影响风速测试的精度。在实际应用中，移动设备的压力孔内腔的内径一般设置为3.5mm左右，但不局限于此，其内腔的横截面积可以根据移动设备的设计结构和应用需求具体设置。
需要说明的是，所述压力孔可以配合移动设备的设计结构专门设置，也可以将移动设备本身的其他开口，例如耳机孔、电源孔或其他连接外界的开口作为本实施例中的压力孔，以使移动设备外观简洁美观。
S101，所述压力孔连通外界，将压力孔对准风向，获得风的总压力P。
S102，根据风速v和动压力P-P0的对应关系式，获得当前的风速。
具体的，根据公式
Figure PCTCN2015082664-appb-000005
获得当前的风速，其中ρ为空气密度。
需要说明的是，本实施例中的空气密度可以为标准状态下的空气密度常数1.29kg/m3，也可以为常温常压下的空气密度常数1.205kg/m3，也可以通过其他方法获取任何环境下的空气密度。
本实施例的一优选实施中，通过下述方法获得任何环境下的空气密度ρ：
测得空气中的水汽压e以及测得空气温度T；
根据公式
Figure PCTCN2015082664-appb-000006
计算出空气密度ρ，其中RB＝287.05J·kg-1·K-1为干空气的气体常数，P为风的总压力。
将公式
Figure PCTCN2015082664-appb-000007
代入公式
Figure PCTCN2015082664-appb-000008
从而可以得到测试风速的另一计算公式：
Figure PCTCN2015082664-appb-000009
本实施例技术方案的方法通过测得任何环境的空气中的水汽压e和空气温度T，精确测得空气密度，进而可以提高风速测试的精度。
图2为本发明实施例提供的风速测试设备结构示意图，所述风速测试的设备设置在移动设备中，包括：
压力传感器21，置于所述风速测试设备的压力孔内腔中，该压力孔连通外界，在移动设备上专门设置或利用已有设计开口；压力传感器21用于获得压力孔内腔的静压力P0，以及在将所述压力孔对准风向时，获得风的总压力P。
风速获取单元22，用于根据风速v和动压力P-P0的对应关系式，获得当前的风速。
具体的，风速获取单元22，用于根据公式
Figure PCTCN2015082664-appb-000010
计算出当前的风速， 其中ρ为空气密度。
需要说明的是，本实施例中的风速测试设备可设置在包括手机、可穿戴设备等移动设备中。
在一优选实施例中，本实施例的风速测试设备还包括：
湿度传感器，用于测得空气中的水汽压e。
温度传感器，用于测得空气温度T。
空气密度获取单元，用于根据公式
Figure PCTCN2015082664-appb-000011
计算出空气的密度ρ，其中RB＝287.05J·kg-1·K-1为干空气的气体常数。
由此，风速获取单元22还可以根据公式
Figure PCTCN2015082664-appb-000012
计算风速。
进一步优选地，本实施例的温度传感器和湿度传感器都置于风速测试设备的压力孔内腔中，以提高获得的空气密度的准确度。
进一步优选地，本实施例的温度传感器和压力传感器集成在同一芯片上，也可以温度传感器、湿度传感器和压力传感器集成在同一芯片上，以节省物理空间，提高设备的集成度。
综上所述，本发明实施例公开了一种风速测试的方法和设备，通过获得移动设备内腔的静压力和风的总压力，将风的总压力和静压力做差获得风的动压力；然后根据风速和动压力的对应关系获得当前风速。本技术方案可以有效的提高风速测试的精度，而且不会对移动设备的相关部件造成损坏，完全不同于现有技术利用麦克风测试风速的方法。并且在优选方案中，通过测得空气温度和湿度计算任何环境中的空气密度来代替常温常压下的空气密度常数，以达到进一步提高风速测试的精度的目的。
以上所述仅为本发明的较佳实施例而已，并非用于限定本发明的保护范围。凡在本发明的精神和原则之内所作的任何修改、等同替换、改进等，均包含在本发明的保护范围内。

Claims (10)

  1. 一种风速测试的方法，其特征在于，包括：
    测得移动设备的压力孔内腔的静压力P0；所述压力孔连通外界，在移动设备上专门设置或为已有设计开口；
    将所述压力孔对准风向，获得风的总压力P；
    根据风速v和动压力P-P0的对应关系式，获得当前的风速。
  2. 根据权利要求1所述的风速测试的方法，其特征在于，所述根据风速v和动压力P-P0的对应关系式，获得当前风速包括：
    根据公式
    Figure PCTCN2015082664-appb-100001
    获得当前的风速，其中ρ为空气密度。
  3. 根据权利要求2所述的风速测试的方法，其特征在于，所述方法还包括：
    测得空气中的水汽压e以及测得空气温度T；
    根据公式
    Figure PCTCN2015082664-appb-100002
    计算出所述空气密度ρ，其中
    RB＝287.05J·kg-1·K-1为干空气的气体常数。
  4. 根据权利要求1所述的风速测试的方法，其特征在于，所述移动设备包括手机、可穿戴设备。
  5. 一种风速测试设备，其特征在于，包括：
    压力传感器，置于所述风速测试设备的压力孔内腔中，所述压力孔连通外界，在所述风速测试设备上专门设置或为已有设计开口；用于获得压力孔内腔的静压力P0，以及在将所述压力孔对准风向时，获得风的总压力P；
    风速获取单元，用于根据风速v和动压力P-P0的对应关系式，获得当前的风速。
  6. 根据权利要求5所述的风速测试设备，其特征在于，所述风速获取单元，具体用于根据公式
    Figure PCTCN2015082664-appb-100003
    计算出当前的风速，其中ρ为空气密度。
  7. 根据权利要求6所述的风速测试设备，其特征在于，所述风速测试设备 还包括：
    湿度传感器，用于测得空气中的水汽压e；
    温度传感器，用于测得空气温度T；
    空气密度获取单元，用于根据公式
    Figure PCTCN2015082664-appb-100004
    计算出空气的密度ρ，其中RB＝287.05J·kg-1·K-1为干空气的气体常数。
  8. 根据权利要求7所述的风速测试设备，其特征在于，所述温度传感器和所述湿度传感器都置于所述风速测试设备的压力孔的内腔中。
  9. 根据权利要求7所述的风速测试设备，其特征在于，所述温度传感器和所述压力传感器集成在同一芯片上；或者所述温度传感器、所述湿度传感器和所述压力传感器都集成在同一芯片上。
  10. 根据权利要求5所述的风速测试设备，其特征在于，所述风速测试的设备设置在移动设备中，所述移动设备包括手机、可穿戴设备。
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