Metal fibril electrode array producing method for optic nerve stimulation

The invention relates to a making method of a metal micro-wire electrode array used for optic nerve stimulation. The method comprises the following steps: in step one, insulating layers at the two ends of a metal wire are stripped; in step two, an electrochemical corrosion loop is utilized to erode the exposed end of the metal wire; after the metal wire is separated from a liquid level, a switch is disconnected, and then the metal wire is taken out; in step three, a plurality of eroded metal wires are selected and inserted into a punched plastic base, partial metal wires are exposed, and are fixed by epoxide resin AB glue, and the metal wires and an external circuit connector are connected by adopting lacquered wires; in step four, the metal micro-wire electrode array is put in a plastic mould and is cast by medical silicone adhesive, and a microelectrode is taken out after solidification, so that a Pt-Ir alloy micro-wire electrode array which is applied to the optic nerve stimulation is ...

Vision prosthesis device based on optical-disc micro-electrode array

A visual prosthetic device is based on videodisc microelectrode array, belonging to the technical field of medical appliance. The device comprises a microelectrode array substrate, a microelectrode array and an electrode cable, and is characterized by further comprising a cover board and a retina nail; wherein, the two ends of the microelectrode array substrate are respectively provided with a through hole of the retina nail, the middle of microelectrode array substrate is provided with 18 electrode through holes, and the retina nail passes through the through hole of the retina nail to fix the microelectrode array substrate on a videodisc of the retina; the microelectrode array consists of 18 wire electrodes which are fixed in the electrode through holes that are arranged in the center of the microelectrode array substrate, one ends of the wire electrodes are connected in vitro by the electrode cables, and the cover board covers above the electrode through holes of the microelectrode array ...

Vision prosthesis device based on optical-disc micro-electrode array

A visual prosthetic device is based on videodisc microelectrode array, belonging to the technical field of medical appliance. The device comprises a microelectrode array substrate, a microelectrode array and an electrode cable, and is characterized by further comprising a cover board and a retina nail; wherein, the two ends of the microelectrode array substrate are respectively provided with a through hole of the retina nail, the middle of microelectrode array substrate is provided with 18 electrode through holes, and the retina nail passes through the through hole of the retina nail to fix the microelectrode array substrate on a videodisc of the retina; the microelectrode array consists of 18 wire electrodes which are fixed in the electrode through holes that are arranged in the center of the microelectrode array substrate, one ends of the wire electrodes are connected in vitro by the electrode cables, and the cover board covers above the electrode through holes of the microelectrodearray ...

Intelligent power consumption management system for wireless base station

The invention provides an intelligent power consumption management system for a wireless base station, and relates to the technical field of power consumption management. The wireless base station intelligent power consumption management system comprises an intelligent management system, the intelligent management system is electrically connected with a plurality of user units through a network end, and the intelligent management system is electrically connected with a plurality of base station groups through a plurality of detection units. The intelligent management system is connected with a background terminal and a patrol terminal through a remote wireless transmission module wire. Real-time monitoring is carried out through a GPS positioning sensor and a current and voltage detector, comparison with user network end digital usage is carried out, system intelligent detection, intelligent processing and synchronous early warning reminding are carried out, remote, automatic and on-site ...

Manufacturing method of pressure head used on thermal force simulation testing machine

The invention provides a manufacturing method of a pressure head used on a thermal force simulation testing machine. The manufacturing method of the pressure head used on the thermal force simulation testing machine includes: processing a blank into an olive shape with two ends fine and the middle thick, determining temperature when shrinking rate of a cross section of the blank is large or the maximum stress value of the cross section of the blank is low to be heating or deformation temperature of the blank, placing the blank between two anvil heads which both have heating and hot pressing deformation functions after a thermoelectric couple is welded on the thickest middle position of the olive-shaped blank, adding a spacer between the blank and each anvil head, and performing 2-7 times of compression deformation on the blank after the blank is heated to the deformation temperature through voltage applied between the two anvil heads so as to combine the spacers and the blank into a whole ...

Corrosive capable of displaying ultra low carbon steel solidification arborescent structure and preparation method thereof

The invention discloses a corrosive capable of displaying an ultra low carbon solidification arborescent structure and a preparation method thereof. The corrosive is prepared from the following components: picric acid, stannous chloride, copper chloride, hydrochloric acid, surfactant, absolute ethyl alcohol and distilled water. The preparation method is as follows: taking a specified amount of the distilled water, and equally dividing the distilled water into two parts; mixing and putting solid medicament into a glass container according to fixed quantity, and adding one part of the distilledwater into the solid mixed medicament to dissolve the medicament; adding a specified amount of the absolute ethyl alcohol into another part of spare distilled water; adding a hydrochloric acid solution into the absolute ethyl alcohol solution; mixing the ethyl alcohol and the hydrochloric acid solution which are poured into an aqueous solution containing the solid medicament; fully stirring; and finally ...

Measuring method of yield strength of pipeline steel tubes with high steel grade and large wall thickness

The invention discloses an easy and practical measuring method capable of improving the stability and the accuracy of the yield strength detection of pipeline steel tubes with high steel grade and large wall thickness. The measuring method comprises the following steps of: sampling a pipeline steel tube; processing a sample with a rectangular cross section by a sawing machine and a milling machine; pulling the sample to break by a tensile testing machine; and analyzing and calculating the yield strength Rt0.5 of the pipeline steel tube. The measuring method is characterized in that the processed sample is preliminarily pulled to a proportional limit RP 0.01, dismounted, loosened, then clamped again and pulled to break. The invention solves the problem of instability of the yield strength measuring of a pipeline steel tube by adopting a cold flattening method in traditional pipeline steel specification API Spec.5L, thereby being a brand-new measuring method of pipeline steel tubes with high ...

Anvil for thermal simulation testing machine and method for manufacturing anvil

The invention discloses an anvil for a thermal simulation testing machine and a method for manufacturing the anvil. The anvil is composed of three portions which are an anvil body and gaskets attached to the two ends of the anvil body, the anvil body is a cylinder, and the round gaskets are attached to the two ends of the cylinder, wherein the cylinder and the round gaskets have the same section shape. A blank used for manufacturing the anvil is used as a simulation sample, the thermal simulation testing machine is used for conducting heating and deforming on the blank, the hot working technological process is simple, convenient to implement and fast, the initial shape of the blank is the cylinder with an arc-shaped groove, the upper bottom face and the lower bottom face of the cylinder are wrapped by tantalum sheets, the blank is formed under simple uniaxial compression deformation conditions, and the cylindrical anvil is obtained. The anvil is short in production cycle and low in cost ...

Measuring method of yield strength of pipeline steel tubes with high steel grade and large wall thickness

The invention discloses an easy and practical measuring method capable of improving the stability and the accuracy of the yield strength detection of pipeline steel tubes with high steel grade and large wall thickness. The measuring method comprises the following steps of: sampling a pipeline steel tube; processing a sample with a rectangular cross section by a sawing machine and a milling machine; pulling the sample to break by a tensile testing machine; and analyzing and calculating the yield strength Rt0.5 of the pipeline steel tube. The measuring method is characterized in that the processed sample is preliminarily pulled to a proportional limit RP 0.01, dismounted, loosened, then clamped again and pulled to break. The invention solves the problem of instability of the yield strength measuring of a pipeline steel tube by adopting a cold flattening method in traditional pipeline steel specification API Spec.5L, thereby being a brand-new measuring method of pipeline steel tubes with high ...

Electromagnetic field test processing method

The invention relates to the technical field of cable production, in particular to an electromagnetic field test processing method, which comprises the following steps of: firstly, setting a two-dimensional space coordinate at a position with an electromagnetic field, setting two coordinate axes x and y, and moving towards one end with a stronger magnetic field until an intersection point coordinate unit of magnetic field intensity change is detected; two-dimensional space coordinates are set, then measurement personnel move according to the x axis and the y axis, then the magnetic field intensity change position is measured, then the shielding sleeve is connected to the surface of the electromagnetic detector in a sleeving mode, the shielding sleeve is rotated to enable the opening to rotate around the electromagnetic detector, and magnetic field detection is conducted once every 5 degrees of rotation of the shielding sleeve. The direction with the maximum magnetic field intensity is further ...

Corrosive agent for displaying silicon steel coagulation tissue and its preparation method

The invention provides a corrosive for the revealing of the silicon steel solidification structure. The invention has the component and blending ratio of the corrosive that 0.9 to 1.2 gram of a picronitric acid and/or 0.9 to 1.2 gram of a stannous acid, 10 to 20 gram of a ferric chloride, 20 to 50 milliliter of an absolute ethyl alcohol, 15 to 18 milliliter of a hydrochloric acid, 0.2 to 0.5 gram of a copper chloride, 0.2 to 0.5 gram of a magnesium chloride and 80 to 100 milliliter of a distilled water. The invention has the dosing method of the corrosive that the picronitric acid and/or the stannous acid and the ferric chloride are put into a container; the distilled water is divided into two shares, and one share is added into a medicine container; the absolute ethyl alcohol is divided into two shares, one share is added into an aqueous solution which is mixed with medicine, and the other share is added into the distilled water; the hydrochloric acid is added into the ethyl alcohol aqueous ...

Automatic sample polishing equipment and using method thereof

The invention provides automatic sample polishing equipment and a using method thereof. The automatic sample polishing equipment comprises a polishing plate rotating system, a polishing plate, a polishing groove, a bearing table, a transverse and longitudinal displacement system and a motor, wherein the polishing groove is square; a contactless detecting switch is arranged in the center of the square polishing groove; three contactless detecting switches are equidistantly arranged on four sides of the square polishing groove; a variable frequency motor is adopted; the contactless detecting switches are connected with the variable frequency motor; and a universal joint coupler is arranged between the polishing plate rotating system and the polishing plate. The method comprises the following steps of fixing an inclined sample on the bearing table; adjusting a hand wheel and the universal joint coupler until the polishing plate is positioned on the surface of the sample; turning on the contactless ...

Multichannel micro-current stimulator in vitro

The invention discloses an in vitro multi-channel micro-current stimulator used in the field of an artificial nerve repair technology, which comprises a pulse signal generator, voltage-current conversion circuits, and a multi-channel connector, wherein the output end of the pulse signal generator is connected with input ends of the voltage-current conversion circuits, output ends of the voltage-current conversion circuits are all connected with the multi-channel connector, the pulse signal generator generates a single-phase pulse square-wave voltage signal and outputs the signal to the voltage-current conversion circuits, and the voltage-current conversion circuits convert the single-phase pulse square-wave voltage signal into a single-phase pulse current signal; and when the voltage-current conversion circuits convert the single-phase pulse square-wave voltage signal into the single-phase pulse current signal, the frequency and the pulse width of pulse are adjusted through the pulse signal ...

Internet of Things data security management method

The invention provides an Internet of Things data security management method, and relates to the technical field of Internet of Things security. The data security management method for the Internet of Things specifically comprises the following steps: S1, system architecture: performing system architecture on the Internet of Things, including a user docking layer, a network end node layer and a management layer, and establishing, storing and setting a slave port signal identification value; and S2, newly adding and presetting. Data transmission nodes of the Internet of Things are sequentially associated, and the transmission nodes only pass through node signals of corresponding values by utilizing irreplaceable corresponding signal identification values through slave port signal identification values corresponding to the previous node and the next node, so that effective safety management is carried out on a plurality of nodes on a communication chain, and the communication efficiency is ...

Low power supply voltage whole-differential rail-to-rail amplifying circuit

The invention relates to a low mains voltage fully differential rail-to-rail amplifying circuit in the technical field of integrated circuits, which comprises NMOS transistors with normal threshold, such as MN1, MN2, MIN, MAN1, MAN2 and MLN1 to MLN7, and PMOS transistors with normal threshold, such as MP1, MP2, MIP, MAP1, MAP2 and MLP1 to MLP7. Other than MLP2 and MLP3, a low power supply VSS anda high power supply VDD are connected with the substrate ends of other NMOS transistors and PMOS transistors respectively. The circuit adopts a pair of the PMOS transistors and a pair of the NMOS transistors to carry out differential input and adopts a pair of additional PMOS transistors and a pair of additional NMOS transistors to carry out current compensation, thus allowing the fully differential rail-to-rail amplifying circuit to have constant current. A voltage shift circuit is used for eliminating dead zones within the input common-mode range under low mains voltage so as to realize therail-to-rail ...

Multichannel micro-current stimulator in vitro

The invention discloses an in vitro multi-channel micro-current stimulator used in the field of an artificial nerve repair technology, which comprises a pulse signal generator, voltage-current conversion circuits, and a multi-channel connector, wherein the output end of the pulse signal generator is connected with input ends of the voltage-current conversion circuits, output ends of the voltage-current conversion circuits are all connected with the multi-channel connector, the pulse signal generator generates a single-phase pulse square-wave voltage signal and outputs the signal to the voltage-current conversion circuits, and the voltage-current conversion circuits convert the single-phase pulse square-wave voltage signal into a single-phase pulse current signal; and when the voltage-current conversion circuits convert the single-phase pulse square-wave voltage signal into the single-phase pulse current signal, the frequency and the pulse width of pulse are adjusted through the pulse signal ...

Low power supply voltage whole-differential rail-to-rail amplifying circuit

The invention relates to a low mains voltage fully differential rail-to-rail amplifying circuit in the technical field of integrated circuits, which comprises NMOS transistors with normal threshold, such as MN1, MN2, MIN, MAN1, MAN2 and MLN1 to MLN7, and PMOS transistors with normal threshold, such as MP1, MP2, MIP, MAP1, MAP2 and MLP1 to MLP7. Other than MLP2 and MLP3, a low power supply VSS and a high power supply VDD are connected with the substrate ends of other NMOS transistors and PMOS transistors respectively. The circuit adopts a pair of the PMOS transistors and a pair of the NMOS transistors to carry out differential input and adopts a pair of additional PMOS transistors and a pair of additional NMOS transistors to carry out current compensation, thus allowing the fully differential rail-to-rail amplifying circuit to have constant current. A voltage shift circuit is used for eliminating dead zones within the input common-mode range under low mains voltage so as to realize the rail-to-rail ...

Biphase steel for wear-resisting screen mesh and heat treating technology

This invention provides a double phase steel for wear resisting screening net, It's chemical composition (wt.%) is: C-0.06@0.12% SI-1.51@2.1% Mn-0.25@0.5% P-0.05@0.15% S less than 0.035%, Mo-0.02@0.04%, La-0.020@0.005% Fe the remainder. The heat treatment procedure of said steel is that heat said stel to 850 deg.C@960 deg.C (double phose zone), keep for 4]8 minutes, then quench in a flowing water at room temp., cool to room temp. with a cooling rote 40@50deg.C/second. It can simplify the manufacturing technology, elliminate the environmental contamination due to lead bath treatment. It's average service life is 5 times more that of the carbon steel screens, and 2 times more than that of high-carbon spring steel net.

Method for manufacturing three-dimensional nerve microelectrode

Method for manufacturing three-dimensional nerve microelectrode

Silicon micro needle surface coating process method based on micro-electromechanical system (MEMS) technology

The invention relates to a silicon micro needle surface coating process method based on a micro-electromechanical system (MEMS) technology, which comprises the following steps: adopting a chemical vapor deposition method to grow a bottom layer SiO2 on a burnishing surface of a silicon wafer for electrically isolating metal alloy layer and a silicon base; sputtering titanium element and gold element on the bottom layer SiO2 in sequence to form a metal alloy layer; respectively etching metal interconnection line, a pressure welding spot and a contact round dot on the metal alloy layer; growing a top layer SiO2 on the metal alloy layer for insulating the metal alloy layer; etching the top layer SiO2 with HF acid solution to expose the pressure welding spot and the contact round dot on the metal alloy layer; coating and photoetching polymer on the front surface of the silicon base to expose the pressure welding spot and pole contact points on the metal alloy layer; and etching and removing ...

Corrosive agent for displaying silicon steel coagulation tissue and its preparation method

The invention provides a corrosive for the revealing of the silicon steel solidification structure. The invention has the component and blending ratio of the corrosive that 0.9 to 1.2 gram of a picronitric acid and/or 0.9 to 1.2 gram of a stannous acid, 10 to 20 gram of a ferric chloride, 20 to 50 milliliter of an absolute ethyl alcohol, 15 to 18 milliliter of a hydrochloric acid, 0.2 to 0.5 gramof a copper chloride, 0.2 to 0.5 gram of a magnesium chloride and 80 to 100 milliliter of a distilled water. The invention has the dosing method of the corrosive that the picronitric acid and/or the stannous acid and the ferric chloride are put into a container; the distilled water is divided into two shares, and one share is added into a medicine container; the absolute ethyl alcohol is divided into two shares, one share is added into an aqueous solution which is mixed with medicine, and the other share is added into the distilled water; the hydrochloric acid is added into the ethyl alcohol aqueous ...

Multicenter film membrane electrode packaging method and device

Multicenter film membrane electrode packaging method and device

Silicon V-shaped trough plate and method for assembling microfilament electrode array by using the silicon V-shaped trough plate

A V-shaped silicon frid is characterized in that the V-shaped silicon frid comprises a silicon bottom board which is a cuboid, a groove with one end part pierced is opened at one side of the upper face of the silicon bottom board, and a plurality of V-shaped grooves are opened longitudinally at the other side of the groove. The V-shaped silicon frid is convenient for obtaining the convenient and controllable configuration and location of the electric pole, the produced array of electric pole is planted in a cerebral cortex to extract nerve electrical signals.

Metal fibril electrode array producing method for optic nerve stimulation

The invention relates to a making method of a metal micro-wire electrode array used for optic nerve stimulation. The method comprises the following steps: in step one, insulating layers at the two ends of a metal wire are stripped; in step two, an electrochemical corrosion loop is utilized to erode the exposed end of the metal wire; after the metal wire is separated from a liquid level, a switch is disconnected, and then the metal wire is taken out; in step three, a plurality of eroded metal wires are selected and inserted into a punched plastic base, partial metal wires are exposed, and are fixed by epoxide resin AB glue, and the metal wires and an external circuit connector are connected by adopting lacquered wires; in step four, the metal micro-wire electrode array is put in a plastic mould and is cast by medical silicone adhesive, and a microelectrode is taken out after solidification, so that a Pt-Ir alloy micro-wire electrode array which is applied to the optic nerve stimulationis ...