115results about How to "Change ratio" patented technology

A pulse oximetry sensor comprises emitters configured to transmit light having a plurality of wavelengths into a fleshy medium. A detector is responsive to the emitted light after absorption by constituents of pulsatile blood flowing within the medium so as to generate intensity signals. A sensor head has a light absorbing surface adapted to be disposed proximate the medium. The emitters and the detector are disposed proximate the sensor head. A detector window is defined by the sensor head and configured so as to limit the field-of-view of the detector.

Disclosed is an electronic timer device that provides the user with audible, visible or sensory signals indicating when to inhale, when to exhale and when to hold breath during breathing exercises. The length of each inhalation, exhalation and holding of breath can be modified and the ratio between inhaling, exhaling and holding breath can be modified to provide breathing exercises with various different physiological benefits.

A gain control system for dynamically tuning an echo canceller, the echo canceller being configured to estimate an echo of a far-end signal and subtract that estimate from a microphone signal to output an echo cancelled signal, the system comprising an echo measurement unit configured to calculate a ratio of the microphone signal to the far-end signal, an attenuation unit configured to attenuate at least one of the microphone signal and the far-end signal to output a second microphone signal and a second far-end signal to the echo canceller, the ratio of the second microphone signal to the second far-end signal being different from the calculated ratio, and an attenuation controller configured to control the attenuation unit, in dependence on the calculated ratio, so as to alter the ratio of the second microphone signal to the second far-end signal and control the echo-cancelled signal.

The present invention relates to a thermal flowmeter capable of sensing a flow rate in either direction, having a linear output characteristic, and producing a stable output without impairing the response characteristic. In the thermal flowmeter, a laminate is fitted in a channel space formed in a body, forming a main channel. The laminate includes a mesh sheet so that a mesh portion is provided between the main channel and a sensor channel. A measurement chip is provided with an upstream temperature sensing resistor, a downstream temperature sensing resistor, a heating resistor, and a fluid temperature sensing resistor. By an electric circuit, the heating resistor and the fluid temperature sensing resistor are controlled to provide a constant temperature difference. Accordingly, the flow rate of a fluid under measurement is measured based on a temperature difference between the upstream and downstream temperature sensing resistors.

The invention discloses an air inlet connecting pipe of an EGR engine. The air inlet connecting pipe comprises a fresh air inlet single pipe and an exhaust gas mixing tube. The two ends of the fresh air inlet single pipe are provided with a sharing air inlet and a sharing air outlet respectively. The sharing air inlet is connected with a device used for providing fresh air, the sharing air outlet is connected with an air inlet pipe, and an electronic throttle valve which is in control connection with an engine ECU is connected between the sharing air inlet and the sharing air outlet in series. The exhaust gas mixing tube uses the sharing air inlet together with the fresh air inlet single pipe, and an air outlet of the exhaust gas mixing tube is connected into the fresh air inlet single pipe on the upstream portion of the sharing air outlet. A Venturi tube is additionally arranged in the exhaust gas mixing tube, an exhaust gas channel hole which is led to the inside of the Venturi tube is formed in the throat portion of the equal diameter of the Venturi tube, and an exhaust gas air inlet is formed in the side wall of the exhaust gas mixing tube corresponding to the exhaust gas channel hole. According to the air inlet connecting pipe of the EGR engine, a double-channel air inlet mode is adopted, the mixing uniformity of exhaust gas and the fresh air is improved, and nitric oxide in the exhaust gas can be effectively lowered.

The invention relates to an arrangement method of copper-indium-gallium-selenium thin-film battery co-evaporation linear sources. The arrangement method comprises a glass substrate and the linear evaporation sources, the linear evaporation sources are respectively longitudinally arranged on the lower sides of two sides of the glass substrate along the moving direction of the glass substrate, only one kind of raw material is placed in each linear evaporation source, and the linear evaporation sources under each side of the glass substrate is in inclination arrangement. When the glass substrate goes into an evaporation zone, the glass substrate can simultaneously contact uniformly mixed raw material steams, the raw material steam of each linear evaporation source can be used for arrange the evaporation zone according to a preset process ratio, the adjustment flexibility of the raw material ratio in the battery production process is effectively improved, and besides the utilization rate of the raw materials can be improved.

The invention discloses a novel adaptive medium-voltage adjusting and transforming system which comprises a three-phase autotransformer and a three-phase loaded tap switch. The system is structurally characterized in that the three-phase autotransformer is connected with the three-phase loaded tap switch which is connected with an intelligent voltage-adjusting controller through a control cable, and a power source in the three-phase autotransformer is connected with the intelligent voltage-adjusting controller. The novel adaptive medium-voltage adjusting and transforming system can guarantee qualified power supply voltage of users and reduce line loss of lines. When the intelligent voltage-adjusting controller adopts a core controller and an intelligent power manager, outputting of secondary side voltage of the autotransformer can be stabilized at 10KV by automatically controlling and adjusting tap positions of the loaded voltage-adjusting tap switch through automatic tracking of line voltage changes.

In the bias stabilization control using average optical power of signal light, there is a case where a control algorithm (maximum control or minimum control) changes depending on the amplitude of clock voltage, or it becomes out of control. In an optical modulation device for performing CSRZ optical modulation on outgoing light from an optical source, control light inputted from a control light input path is inputted into an LN-MZ optical modulator having traveling-wave type modulating electrodes from a direction opposite to signal light, and the average optical power is detected by a photodetector. A bias-voltage Vb is so generated that this optical power may be minimized, and is applied to a bias input terminal, whereby automatic bias stabilization control is performed.