156 results about "Channel electrode" patented technology

In accordance with one aspect of the invention, methods and systems are disclosed for delivering a stimulating signal by a stimulating medical device having a plurality of electrodes. Such methods and systems comprise receiving a signal; filtering the received signal to obtain a plurality of band pass filtered signals; delivering to each electrode of a first group of one or more electrodes, a first set of stimulation signals, wherein the first set of stimulation signals comprises stimulations signals for each of a first group of two or more band pass filtered signals; and delivering to each of electrodes of a second group of one or more electrodes, a second set of stimulation signals, wherein the second set of stimulation signals comprises stimulations signals for each of a second group of one or more band pass filtered signals; and wherein the first set of stimulation signals are delivered at a different effective stimulation rate than the second set of stimulation signals.

The invention discloses a high-focusing-capability multi-channel transcranial direct current stimulation device and a control method thereof. The high-focusing-capability multi-channel transcranial direct current stimulation device comprises a transcranial direct current stimulation (tDCS) electrode array, a power source and control units, wherein channel electrodes in the electrode array are connected with the power source respectively through independent control units, polarity and current strength of the channel electrodes are respectively controlled through the independent control units, and the tDCS electrode array is integrated into an electrode cap mode. The high-focusing-capability multi-channel transcranial direct current stimulation device can complete automatic optimization of stimulation parameters of the channels according to stimulation positions and types specified by users, and finally generates stimulation meeting users' requirements. A tDCS system of the high-focusing-capability multi-channel transcranial direct current stimulation device has the advantages of being capable of covering the whole head, having high focusing capability and multiple channels and the like, and is accurate in stimulation position and customizable in complex stimulation.

A method and apparatus for synthesis of fullerenes and nanotubes in large quantities at an economical cost from graphite in electric arc plasma process are presented. Different embodiments of channeled graphite electrodes for both direct current (DC) and alternative current (AC) processes are disclosed. High productivity of the carbon allotropes is achieved by feeding consumable graphitic electrode into hot plasma zone, injecting of feedstock, catalyst and buffer gas flow through the longitudinal inner channel electrodes into the hot plasma zone and creating the radial gas outflow in the gap between electrodes, and following removal of produced carbon and catalytic vapors from the hot plasma zone into an oxygen deprived reaction vessel for quenching and condensing. Deposited after condensation soot containing carbon allotropes is collected and carbon allotropes are recovered by known techniques. The final products of recovering are fullerenes C₆₀, C₇₀ and higher fullerenes or nanotubes.

A linear voltage regulator has a regulating transistor with a first channel electrode receiving an input voltage source and a second electrode providing an output voltage. A control electrode of the regulating transistor is controlled by an error amplifying circuit based on comparison between a feedback signal of the output voltage and a reference voltage. An event detecting circuit is coupled to the input voltage source for detecting occurrence of a transient in the input voltage source. In response to the detected transient event, an enable controlling circuit generates an enable signal for determining an effective operation time of a voltage clamping circuit. During such effective operation time, a potential difference between the first channel electrode and the control electrode is limited within a predetermined clamp voltage for preventing the regulating transistor from being dramatically changed in operation.

The invention discloses an ultrathin flexible capacitive touch sensor based on graphene. The sensor comprises an ultrathin flexible membrane, the ultrathin flexible membrane includes a surface a and a surface b; the surface a and the surface b are each provided with a channel electrode; a first conductive layer is arranged on the surface a, the first conductive layer is connected with a capacitive induction chip of a capacitive touch sensor through the channel electrode arranged on the surface a, the first conductive layer is formed by patterning one layer or multiple layers of graphene membranes; a first optical rubber layer is arranged on the surface of the first conductive layer; a second conductive layer is arranged on the surface b, the second conductive layer is connected with the capacitive induction chip of the capacitive touch sensor through the channel electrode arranged on the surface b, the second conductive layer is formed by patterning one layer or multiple layers of graphene membranes; and a second optical rubber layer is arranged on the surface of the second conductive layer.

The invention discloses the technical field of medical apparatuses, and particularly relates to a multichannel pelvic floor muscle strength evaluation system and method. The multichannel pelvic floormuscle strength evaluation system comprises a multichannel electrode, a basic data collector and a processor, wherein the multichannel electrode is connected with the basic data collector, the basic data collector is connected with the processor, the multichannel electrode consists of a first collection electrode, a second collection electrode and a third collection electrode, and a plurality of electrode plates are respectively mounted on the first collection electrode, the second collection electrode and the third collection electrode; and surface myoelectric signal of pelvic floor muscle, collected by the multichannel pelvic floor electrode is subjected to adjacent myoelectric signal matrix relationship mapping, so that pinpoint positioning analysis on the pelvic floor muscle by the multichannel electrode can be realized at maximum efficiency, and the defects that in the prior art, detection channels for myoelectric signal are low in number, and ill-conditioned muscle groups cannotbe pinpointly positioned, can be effectively overcome.

The invention provides a novel magnetofluid electric generator without seeds. Conducting flow at the temperature ranging from three thousand DEG C to four thousand DEG C works in the magnetofluid electric generator and is gas ionized at high temperature. In order to conduct effective electric generation, on the basis that the conducting performance of the ionized gas cannot meet requirements, seeds, namely metal ions such as potassium and cesium are added; while, when airflow containing the metal ions passes through an electric generating channel in a high-intensity magnetic field at high speed and reaches an electrode, the electrode is corroded. Rapid corrosion of the electrode is the largest problem for the magnetofluid electric generator, and seed recycling problem also exists. Therefore, the novel magnetofluid electric generator without seeds solves seed adding and recycling problems, and avoids inconvenience caused by corrosion of the channel electrode.

The invention discloses a touch point positioning method for a self capacitance touch screen. The method comprises the following steps that S1, reference capacitance values and touch thresholds of each x channel electrode and Y channel electrode are initialized and updated; S2, the real-time capacitance value of each channel electrode of the self capacitance touch screen is detected, whether the touch occurs or not is judged, if the touch occurs, the step S3 is continuously executed, and otherwise, the current step is continuously executed; S3, a touch region is determined through being combined with the real-time capacitance value of each channel electrode; S4, a grading weighing algorithm is adopted for calculating the touch coordinate value of the touch region, so that a touch point is determined; S5, the reference capacitance value is updated on the channel electrode which is not touched. The method has the advantages that the isolated noise point interference near the touch point can be filtered away, the touch point calculation and positioning accuracy is improved, the stability is higher, in addition, the calculation quantity is low, the positioning efficiency is high, and the method can be widely applied to the application field of the self capacitance touch screen.

An apparatus and method for treating sleep apnea comprising an external, low voltage electrical stimulator that provides between 5 to 25 milliamps connected to electrodes imbedded located over the first and third intercostals or the third and fifth intercostals. The stimulator is designed to provide a current to the electrodes that stimulated one of the two pairs of intercostals for 59 seconds, rest for 4 seconds and then repeats the cycle throughout the night after the user has fallen asleep. The stimulator includes a main power switch and two amplitude control switches (also called amplitude control switches), a main control switch, an adustable delay activation timer switch, a power timer switch, an amplitude lock switch, two channel electrode wire plugs, an LCD display, and a battery pack. Prior to use, the amplitude control switches adjusted and lock at an amplitude needed to cause contraction. of the intercostals assigned to the channel. The patient then connects the electrode wires to the intercostals electrodes and activates the stimulator.

The fusion reactor of the invention comprises a plurality of elongated triangular electrodes aligned in a cylindrical shape to form an axially symmetric containment geometry. The electrodes are separated by means of electrical insulator preferably pure swept Quartz (SiO2). The Triangular electrodes, are made out of very high electro conductive, high strength, heat resistant, radiation resistant and neutrons moderating material such as thorium carbide, uranium carbide or silicon carbide or the like which is preferably made by ceramic powder metallurgy process. Each electrode includes a cooling structure or flow channel formed in the internal structure allowing for a cooling fluid for extracting heat caused by plasma and nuclear reactions. The acceleration channels electrodes of the fusion reactor are of triangular shape and are protected with a continuously changing protective film or layer of high electro-conductive fissile or fertile material such as thorium carbide or uranium carbide. Lithium may be added for the reactor to breed its own Tritium.

The invention discloses a portable multi-channel electrochemical detection system including a USB power supply module, a system power module, a STM32 microcontroller, an in-chip DAC module, a currentcollecting module, a voltage exciting module, a multi-channel electrode interface, an SD card storage circuit, a Bluetooth transmission module and a smart phone. The smart phone is in communicationalconnection with the STM 32 microcontroller through the Bluetooth transmission module. Through the Bluetooth transmission module, the smart phone can control the system and receives data for displaying, so that system operation becomes simpler and more convenient. At the same time, since man-machine interaction of the system is not conducted through keys and liquid crystal display modules, the sizeis reduced. Besides, since the system adopts multi-channel detection, multi-element detection requirement of more scenes can be met.

The invention is suitable for the technical field of touch screen detection and provides a capacitive touch screen detection method. The method comprises the following steps: a touch chip performs scanning detection on each channel electrode in sequence to obtain a first capacitance value of each channel electrode; the touch chip simultaneously performs scanning detection on a first channel electrode and a second channel electrode which form a pair of self-capacitive coupling electrodes in sequence to obtain a second capacitance value of each channel electrode; the touch chip sends the first capacitance value and the second capacitance value of each channel electrode to a detection device; and the detection device calculates and determines whether a touch screen is a non-defective product or not. According to the capacitive touch screen detection method, the detection efficiency and stability of the touch screen in a production process are improved, the detection errors caused by artificial subjective judgment errors are avoided, and the manufacturing and maintenance costs of a detection jig in production are reduced.

A coordinate measurement device and method for hover sensing are disclosed. According to the present invention, the coordinate measurement device comprises: a channel electrode unit including a plurality of electrodes, wherein a capacitance of at least one of the plurality of electrodes variably changes by the approach of a contact object; a driving unit for applying a positive voltage to a first electrode group among the plurality of electrodes and applying a negative voltage to a second electrode group among the plurality of electrodes; a reception unit for receiving reception signals from a plurality of electrodes in the first electrode group and a plurality of electrodes in the second electrode group, respectively; and a processor for determining the position of the contact object on the basis of the received signals. Therefore, the coordinate measurement device can detect an accurate position of the contact object approaching the coordinate measurement device, through a conventional sensing element and circuit process.