公开(公告)号：US20130029350A1

公开(公告)日：2013-01-31

申请号：US13574135

申请日：2011-01-19

Applicant: Matthew Cooper ,  Alexander Sleptsov ,  Richard John Hammond

Inventor： Matthew Cooper ,  Alexander Sleptsov ,  Richard John Hammond

IPC: G01N27/00 ,  G01N33/48

CPC classification number: H03B5/32 ,  G01N29/022 ,  G01N2291/02466

Abstract: In accordance with the present invention there is provided a bi-stable oscillator circuit for detecting a load imparted to a surface. The bi-stable oscillator comprises an electrical amplifier, at least one resonator comprising an electrical transducer having a resonant frequency, a surface of the resonator forming the surface on which the load is to be detected and an impedance network having a resonant frequency. The resonator is arranged to be exposed to an environment under test, and the resonator and the impedance network are connected in parallel with the electrical amplifier such that when a load imparted to the surface exceeds a pre-determined threshold value the oscillator circuit oscillates at the resonant frequency of the impedance network and when a load imparted to the surface is less than the threshold value the oscillator circuit oscillates at the resonant frequency of the resonator, switching of the circuit oscillation frequency being indicative of the load crossing the predetermined threshold value.

Abstract translation: 根据本发明，提供一种用于检测施加到表面的负载的双稳态振荡器电路。 所述双稳态振荡器包括电放大器，至少一个谐振器包括具有谐振频率的电变换器，谐振器的形成要在其上检测负载的表面的表面和具有谐振频率的阻抗网络。 谐振器被布置为暴露于被测环境，并且谐振器和阻抗网络与电放大器并联连接，使得当施加到表面的负载超过预定阈值时，振荡器电路在 阻抗网络的谐振频率和施加到表面的负载小于阈值时，振荡器电路以共振器的谐振频率振荡，电路振荡频率的切换指示负载超过预定阈值的负载。

公开(公告)号：US09312811B2

公开(公告)日：2016-04-12

申请号：US13574135

申请日：2011-01-19

Applicant: Matthew Cooper ,  Alexander Sleptsov ,  Richard John Hammond

Inventor： Matthew Cooper ,  Alexander Sleptsov ,  Richard John Hammond

IPC: G01N33/551 ,  H03B5/32 ,  G01N29/02

CPC classification number: H03B5/32 ,  G01N29/022 ,  G01N2291/02466

Abstract: In accordance with the present invention there is provided a bi-stable oscillator circuit for detecting a load imparted to a surface. The bi-stable oscillator comprises an electrical amplifier, at least one resonator comprising an electrical transducer having a resonant frequency, a surface of the resonator forming the surface on which the load is to be detected and an impedance network having a resonant frequency. The resonator is arranged to be exposed to an environment under test, and the resonator and the impedance network are connected in parallel with the electrical amplifier such that when a load imparted to the surface exceeds a pre-determined threshold value the oscillator circuit oscillates at the resonant frequency of the impedance network and when a load imparted to the surface is less than the threshold value the oscillator circuit oscillates at the resonant frequency of the resonator, switching of the circuit oscillation frequency being indicative of the load crossing the predetermined threshold value.

Abstract translation: 根据本发明，提供一种用于检测施加到表面的负载的双稳态振荡器电路。 所述双稳态振荡器包括电放大器，至少一个谐振器包括具有谐振频率的电变换器，谐振器的形成要在其上检测负载的表面的表面和具有谐振频率的阻抗网络。 谐振器被布置为暴露于被测环境，并且谐振器和阻抗网络与电放大器并联连接，使得当施加到表面的负载超过预定阈值时，振荡器电路在 阻抗网络的谐振频率和施加到表面的负载小于阈值时，振荡器电路以共振器的谐振频率振荡，电路振荡频率的切换指示负载超过预定阈值的负载。

公开(公告)号：US07570125B2

公开(公告)日：2009-08-04

申请号：US10553321

申请日：2004-04-14

Applicant: Victor Petrovich Ostanin ,  Alexander Sleptsov

Inventor： Victor Petrovich Ostanin ,  Alexander Sleptsov

IPC: H03B5/32

CPC classification number: G01N29/036 ,  G01N2291/0256 ,  H03B5/368 ,  H03B21/00 ,  H03L5/00

Abstract: An ocscillator circuit having: a) a piezoelectric crystal connected to a surface; b) a variable frequency generator for generating a driving signal which is supplied to the crystal to cause the crystal to oscillate, thereby causing the surface to oscillate; and, c) an analyser for monitoring the phase shift between the voltage across the crystal and the current flowing through it and, in response generating an adjustment signal which relates to the difference between the oscillation frequency and a resonant frequency of the crystal, the variable frequency generator being responsive to the adjustment signal to vary the frequency of the driving signal to cause the crystal to oscillate at the resonant frequency.

Abstract translation: 一种振荡器电路，具有：a）连接到表面的压电晶体; b）可变频率发生器，用于产生提供给晶体以使晶体振荡的驱动信号，从而使表面振荡; 以及c）用于监测晶体两端的电压与流经晶体的电流之间的相移的分析器，并且响应于产生与晶体的振荡频率和谐振频率之间的差异相关的调整信号， 频率发生器响应于调节信号来改变驱动信号的频率，以使晶体以共振频率振荡。

公开(公告)号：US20070040624A1

公开(公告)日：2007-02-22

申请号：US10553321

申请日：2004-04-14

Applicant: Victor Ostanin ,  Alexander Sleptsov

Inventor： Victor Ostanin ,  Alexander Sleptsov

IPC: H03B5/32

CPC classification number: G01N29/036 ,  G01N2291/0256 ,  H03B5/368 ,  H03B21/00 ,  H03L5/00

Abstract: An apparatus for oscillating a surface is described. The apparatus comprises an oscillator circuit having: a) a piezoelectric crystal connected to the surface; b) a variable frequency generator for generating a driving signal which is supplied to the crystal to cause the crystal to oscillate, thereby causing the surface to oscillate; and, c) an analyser for monitoring the phase shift between the voltage across the crystal and the current flowing through it and, in response generating an adjustment signal which relates to the difference between the oscillation frequency and a resonant frequency of the crystal, the variable frequency generator being responsive to the adjustment signal to vary the frequency of the driving signal to cause the crystal to oscillate at the resonant frequency.

Abstract translation: 描述了用于振荡表面的装置。 该装置包括：振荡器电路，具有：a）连接到该表面的压电晶体; b）可变频率发生器，用于产生提供给晶体以使晶体振荡的驱动信号，从而使表面振荡; 以及c）用于监测晶体两端的电压与流经晶体的电流之间的相移的分析器，并且响应于产生与晶体的振荡频率和谐振频率之间的差异相关的调整信号， 频率发生器响应于调节信号来改变驱动信号的频率，以使晶体以共振频率振荡。