42results about How to "Electrical signal stability" patented technology

The invention discloses a photoelectric oscillator, comprising a balance detector for converting two paths of input optical pulse sequences into microwave signals, subtracting two paths of obtained microwave signals and then outputting the subtracted microwave signals.

The invention discloses an aramid nanofiber / polyvinyl alcohol / polyaniline composite hydrogel, and a preparation method and application thereof. The composite hydrogel is prepared with aramid nanofibers and a polyvinyl alcohol hydrogel as matrixes and through in-situ polymerization with polyaniline under an acidic condition. Under the interaction of various hydrogen bonds, the mechanical strength and toughness of the composite hydrogel are remarkably improved. Meanwhile, due to the existence of the conductive polyaniline, the composite hydrogel disclosed by the invention has relatively high sensitivity, and can repeatedly and stably detect the changes of electric signals in practical application. The composite hydrogel provided by the invention has high mechanical strength, high toughness and high sensitivity, and is applicable to the field of wearable strain sensors.

The present invention provides the following thin film-laminated film that has high chemical stability even at low costs and that can preferably be used as an electrode film of a strip for a blood sugar level sensor. The thin film-laminated film including a film substrate, and a titanium thin film and a carbon thin film laminated in this order on at least one surface of the film substrate. Preferably, the above-described thin film-laminated film, in which the titanium thin film has a film thickness of from 10 to 400 nm, and the carbon thin film has a film thickness of from 0.2 to 50 nm. In addition, a strip for a blood sugar level sensor, including the above-described thin film-laminated film. Further, a blood sugar level sensor device including the above-described strip for a blood sugar level sensor.

The invention provides a solid-state image pickup element and a method of manufacturing the same and an image pickup device including the same. The solid-state image pickup element, includes: a semiconductor layer in which a photodiode for carrying out photoelectric conversion is formed; a first film containing negative fixed charges and formed on the semiconductor layer in a region in which at least the photodiode is formed by utilizing either an atomic layer deposition method or a metal organic chemical vapor deposition method; a second film containing the negative fixed charges and formed on the first film containing therein the negative fixed charges by utilizing a physical vapor deposition method; and a third film containing the negative fixed charges and formed on the second film containing therein the negative fixed charges by utilizing either the atomic layer deposition method or the metal organic chemical vapor deposition method.

The invention discloses a flexible conductive fabric. The flexible conductive fabric comprises a fabric and a weaving plied yarn, the weaving plied yarn is formed by mixing a conductive wire and a non-conductive wire, and the non-conductive wire is used for fixing the conductive wire on the surface of the fabric in a form with a certain bending capability, so that the fabric and the weaving plied yarn are simultaneously stretched and reset, and the conductivity is kept unchanged. According to the flexible conductive fabric capable of electrifying the conductive wires, the conductive wires have certain elastic recovery performance through the preset arrangement mode, and the conductive wires can be more flexibly applied to wearable equipment. The flexible conductive fabric adopts the continuous conductive wires, so that the resistance is stable, and stable data transmission can be realized. The flexible conductive fabric is skin-friendly and non-inductive, after the conductive wires are combined with the fabric through process treatment, the flexible conductive fabric has good skin-friendly performance and is suitable for daily wearing, and then support is provided for the intelligent wearable technology.

The invention discloses an electric fan head swing angle adjusting device and an angle adjusting sampling electric signal data acquisition method. A rotor marker is arranged on a motor, a rotor position sensing signal acquisition device is arranged at the position, corresponding to the rotor marker, of the rotor marker, and the rotor position sensing signal acquiring device is connected with an angle adjusting control chip through a wire; in order to enable an angle-adjusting sampling electric signal data acquired by the motor rotor position sensing signal acquisition device to correspond to an angle-adjusting process planetary gear crank-variable-length action track and have a rule, the positions of a reference zero point and a maximum displacement inflection point of the planetary gear crank are required to be defined, and according to the established transmission ratio and logical conversion of a power transmission mechanism of a variable-angle gearbox, the motor rotor operates in the angle adjusting process, a regular sampling electric signal data corresponding to the variable-length action track of the planetary gear crank can be obtained, and the device has the characteristics of being free of contact type sampling, stable, reliable and low in cost.

The invention discloses a preparation method of a transparent conductive small ball, the transparent conductive small ball and application. The preparation method comprises the following steps of: (1)uniformly mixing a polymerizable eutectic solvent, a photoinitiator and a cross-linking agent to form a mixed solution, with the dosage of the photoinitiator being 1-3% of the polymerizable eutecticsolvent and the dosage of the cross-linking agent being 1-3% of the polymerizable eutectic solvent, and (2) adopting a continuous controllable fluid method injection molding technology, and making theformed liquid drops into transparent conductive small balls under ultraviolet irradiation. The preparation method is rapid, simple and convenient, equipment is easy to obtain, cost is low, no surfactant is needed, and the preparation method is completely environmentally friendly.

The invention discloses a silicon rubber-carbon sponge composite material and a preparation method and application thereof. The silicon rubber-carbon sponge composite material obtained through preparation has the advantages that through the material improvement, by combining the characteristics of a TENG sensor, the self electricity supply characteristics are realized; the defect that the sensor prepared in an ordinary mode can normally work only through external addition of a power supply is overcome; meanwhile, the silicon rubber-carbon sponge composite material is based on the carbon sponge composite carbon nanometer tubes; on the basis of a carbon sponge fiber network, CNT networks are additionally added, so that the integral fiber network of the material has higher mechanical intensity. The durability of the sensor manufactured in such a way is improved by more than 22 times; the sensitivity is improved by nearly 20 times; meanwhile, the more stable electric signals can be more easily obtained. The preparation method provided by the invention is simple; the preparation materials are cheap and can be easily obtained; the prepared silicon rubber-carbon sponge composite material has wide application prospects in the fields of sensors and wearable electronic equipment.

The invention discloses a cavity attenuated phase shift spectroscopic detection method and device for gas based on software phase locking. The device comprises an LED, a temperature control module, anoptical component, a gas circuit component and an electric circuit component, wherein the electric circuit component comprises a photodetector, an LED driver, a data acquisition card and a computer;the optical component comprises a plano-convex lens, an optical resonant cavity, a high-reflectivity mirror and an interference filter; and the gas circuit component comprises a three-way gas valve, amass flowmeter, a gas filter, and a sampling pump. The detection method comprises the following steps: generating a driving signal; modulating an LED light source; emitting modulated light through the optical resonant cavity, converting an optical signal into a voltage signal by the photodetector, acquiring the voltage signal by using the data acquisition card and inputting the voltage signal into the computer; and carrying out software phase locking amplification and filtering to demodulate the concentration of gas to be detected. The detection method and device of the invention can speed upan operation speed, reduce system noise and improve detection precision, sensitivity and stability, and is capable of continuously carrying out sampling and convenient to carry.

The invention discloses a novel sandwich-type biosensor based on 4-mercapto-phenylboronic acid (4-MPBA). Alpha 2,3 saliva acidification glycan is one of tumor markers for early diagnosis of cancer. Bythe aid of boron atoms matched with the 4-MPBA and Neu5Ac amide groups, a new molecular recognition system is built and used for detecting the alpha 2,3 saliva acidification glycan for the first time. An amination fullerene palladium-platinum alloy is used for signal amplification, and sophora japonica agglutinin is covalently immobilized onto Au-polymethylene blue serving as a signal probe and used for specifically recognizing the alpha 2,3 saliva acidification glycan. Under optimal experimental conditions, the biosensor displays the wide linear range of 10fg mL<-1>-100ng mL<-1> and the detection limit of 3fg mL<-1> (S / N=3). Besides, the method shows good repeatability and stability and can be used for clinical research.

An integrally multiple-molded part for electronic devices is provided capable of absorbing and relieving the internal stresses of a multiple-molded part, preventing the occurrence of clearances between the bonding side face of each electrical connection terminal and a resin, obtaining stable frictional force at the contact region between the bonding surface of the electrical connection terminal and an aluminum wire, obtaining the energy required for bonding, and achieving high bondability. The surface of the molded electrical connection terminal section formed as a primary-molded article becomes exposed after secondary molding, and a stress-absorbing structure is formed in the primary molding resin section of the primary-molded article that serves as a transmission path for stresses associated with the resin shrinkage occurring when the secondary molding resin is cured.

The invention discloses an infrared carbon and sulfur analyzer provided with a constant-temperature device. The infrared carbon and sulfur analyzer comprises a receiving tank, wherein the receiving tank is connected with a gas inlet pipe and a gas outlet pipe; the infrared carbon and sulfur analyzer is internally provided with the constant-temperature device; the constant-temperature device comprises a heat preservation room, a heater and a temperature controller probe; the receiving tank, the temperature controller probe and the heater are arranged in the heat preservation room; and the heat preservation room is provided with holes for the gas inlet pipe and the gas outlet pipe to get in and out. The receiving tank is arranged in a constant-temperature environment so that on one hand, the influences on the receiving tank by the external environment are avoided, and on the other hand, a standard temperature in the receiving tank is improved; even if heat generated by an infrared light source in the receiving tank can increase the temperature in the receiving tank, the whole change of the temperature in the receiving tank is not great, so that the temperature change of analyzed gas flowing through the receiving tank is not great and the flow change is not great; and an electric signal fed by a pyroelectric sensor is relatively stable so that the long-period stability of the measurement of the infrared carbon and sulfur analyzer is improved.

A living-body contact electrode used primarily in a garment for measuring living-body information, which is comfortable to wear, even during exercise, without rubbing between the electrode and the skin while acquiring a stable electrical signal in a dry state and a wet state. A living-body contact electrode can acquire a living-body electrical signal with decreased electrical noises by suppressing the displacement of the electrode without impairing feeling and feel of wearing by suppressing the skin irritation. This is achieved by limiting the coefficient of static friction of the surface of the electrode with respect to the skin, by decreasing the frictional coefficient of an electrical wiring part to be equal to or less than a predetermined value, and by combining the electrical wiring part with the electrode.

The invention discloses an amplifying and filtering type intelligent mobile phone charging circuit. The circuit is characterized by mainly consisting of a transformer T, an operational amplifier P, a triode VT1, a triode VT2, a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C4, a capacitor C5, a capacitor C6, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a diode D1, a voltage-stabilizing diode D2 and a diode D3. The circuit is simple in structure and low in cost; the damage on a mobile phone battery can be reduced during charging, so that the normal service life of the battery is prolonged to more than 10,000 hours and by more than 25%; and therefore, the great convenience is brought for an intelligent mobile phone user, and the circuit is suitable for popularization and application.

The invention discloses a reusable breathable antibacterial electrode plate and a preparation method thereof. The reusable breathable antibacterial electrode plate comprises an electrode plate body and a conductive film, the conductive film is sequentially composed of a hydrogel layer, a silver layer and a hydrocolloid layer from bottom to top, and the electrode plate body and the hydrocolloid layer are tightly bonded, the hydrogel layer is prepared from the following raw materials: eugenol, boron trifluoride diethyl etherate, triisopropylsilane, lipidosome, multi-walled carbon nanotubes, polydiallyldimethylammonium chloride, nanocellulose, polyacrylamide, ammonium persulfate, methacrylic anhydride, polyhexamethylene guanidine hydrochloride, octylphenol polyoxyethylene ether, Tween-80, anhydrous trifluoroacetic acid or boron trifluoride. According to the electrode plate, the composite conductive hydrogel is used as a conductive film, so that the electrode plate is good in conductivityand biological safety, and still has self-adhesion, air permeability, sweat absorbability and antibacterial property under the action of sweat, slight deformation can be achieved according to human skin elasticity, and electric signal stability is not affected, and the electrode plate is convenient to remove and can be repeatedly used.

The invention discloses an LED dual control type multi-circuit treatment type energy-saving control system. The system is characterized in that the system is mainly composed of a single-chip microcomputer, a buzzer, a power supply, a controller, a signal processing unit, a brightness sensor, an LED lamp which is connected with the controller, and an infrared ray probe HW which is connected with the signal processing unit, wherein the buzzer, the power supply, the controller, the signal processing unit and the brightness sensor are connected with the single-chip microcomputer; and the signal processing unit is composed of a processing chip U, a field effect transistor MOS1, a transistor VT3, a sampling and holding circuit, a phase difference correcting circuit, a second-order filtering amplification circuit, a signal output conditioning circuit and the like. According to the invention, opening and closing of the LED lamp are controlled through the moving of personnel within the use range of LED lamp and the brightness in the use range of the LED lamp; accurate analyzing and processing can be carried out on the collected personnel moving information; and accurate LED control is ensured.

The invention discloses an amplifying and filtering type surge current limiting circuit based soft start-up current stabilization circuit which comprises a transformer T, a diode rectifier U, a triode VT4, a capacitor C1, a capacitor C4, a capacitor C5, a capacitor C6, a resistor R6, a resistor R7, a resistor R8, a soft start-up circuit, a surge current limiting circuit, an amplifying and filtering circuit and a delay circuit. The circuit of the invention can realize the soft start-up of an electronic product. When electrically connected, the voltage is gradually outputted at a relatively slow speed to reach a give amount so that the electronic product is free from the impact of surge during the start-up process. In start-up, the circuit of the invention can also ensure a best delay time of around 30 seconds. The circuit can be widely utilized.

Disclosed is a capacitance microphone core with a shunting channel. A front cavity and a vent hole are connected through the shunting channel composed of a front sound inlet hole, the front cavity, an air guide structural member, a side cavity and the vent hole which are connected in sequence, redundant sound waves in the front cavity are shunted through the sound shunting channel, the volume and the flow speed of sound airflow flowing through a vibrating diaphragm are reduced, and the sound airflow passing through the vibrating diaphragm is kept in a relatively constant range with small fluctuation, so that the vibration between the vibrating diaphragm and a back polar plate is relatively constant, generated electric signals are relatively stable, the sound quality effect is improved, noise is avoided, and the pickup distance, the sound sensitivity and the sound definition of the sound are improved.

The embodiments of the invention provide an automobile electronic and electrical performance test circuit system. The system comprises a power source module, an output control module and a controllable branching device which are connected in sequence; the power source module comprises a pulse control unit, a programmable power source which is controlled by the pulse control unit, and a plurality of variable resistance networks connected with the output end of the programmable power source; and the output ends of the variable resistance networks are electrically connected with the output control module. The automobile electronic and electrical performance test circuit system can meet multi-path pulse parameters required by automobile electronic and electrical performance test equipment, replace professional detection equipment, and reduce the construction cost of a testing process.

The invention discloses an amplification, filtering and voltage-stabilizing type smartphone charging circuit which is characterized by being mainly composed of a transformer T, an operational amplifier P, a three-terminal regulator U, a triode VT1, a triode VT2, a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C4, a capacitor C5, a capacitor C6, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a resistor R7, a voltage-stabilizing diode D1, a voltage-stabilizing diode D2, a voltage-stabilizing diode D3 and a diode D4. The circuit of the invention is simple in structure and also low in cost; by using the circuit, damage to a phone battery when in charging can be reduced, so that the normal service life of the battery is improved to more than 10000h, namely prolonged by more than 25%, and thus great convenience is provided for smartphone users, and the circuit of the invention is applicable to popularization for use.

The invention discloses a LIX-type micro-electrode array device, which comprises a top cover, a cavity, a LIX-type micro-electrode and a micro-electrode placement rack, the cavity is connected to the top cover and the micro-electrode placement rack, and the second conductive gasket It is connected with the microelectrode placement frame, the first conductive gasket is connected with the top cover, the external microvoltmeter wire passes through the top cover, the first conductive gasket and the conductive sheet, and the LIX type microelectrodes are distributed on the second conductive gasket. The wire and the external microvoltmeter wire are fixedly connected with the conductive sheet. The invention also discloses a preparation method of the LIX type micro-electrode array device. The LIX-type microelectrode array device of the present invention is light in size, stable in performance, high in sensitivity, good in accuracy, quick in response, and can greatly improve the situation of unstable signal drift in conventional LIX microelectrode measurement, and can effectively stabilize the LIX-type microelectrode in Measuring the electrical signal of ions in the environmental matrix is ​​widely used in the field of environmental microbial research and environmental monitoring.

The invention discloses a LIX type microelectrode array device. The device comprises a top cover, a cavity, a LIX type microelectrode array and a microelectrode placing frame, wherein the cavity is connected with both the top cover and the microelectrode placing frame; a second conducting pad is connected with the microelectrode placing frame; a first conducting pad is connected with the top cover; a lead of an external micro voltmeter passes through the top cover, the first conducting pad and a conducting strip; a lead of the LIX type microelectrode and the lead of the external micro voltmeter are distributed on the second conducting pad; and the second conducting pad is fixedly connected with the conducting strip. The invention further discloses a preparation method of the LIX type microelectrode array device. The LIX type microelectrode array device is light in volume, stable in performance, high in sensitivity, good in correctness and rapid in response, is capable of greatly improving the condition of instable signal drift in conventional LIX microelectrode measurement and effectively stabilizing the electric signals of ions when LIX microelectrodes measure environmental matrixes, and is widely applied in the field of environmental microorganism research and environmental monitoring.