13 results about "Circuit integrity" patented technology

The invention discloses an insulating multi-layer Clip applied to a power module and a preparation method of the insulating multi-layer Clip, aging and layering risks of a traditional adhesive are eliminated through an adhesive-free laminated structure of the insulating multi-layer Clip, heat resistance, chemical resistance and long-term reliability of a product are improved, and meanwhile, an adhesive layer is omitted, so that the overall thickness of the product is thinner and more flexible; through the connection of deep drawing forming and the surface silver / nickel plating process, the three-dimensional assembly requirement of the insulation multi-layer Clip is met, and the conductive performance and the contact reliability of the circuit are improved. Multiple alignment errors are avoided through a one-time pressing process, the interlayer alignment precision is extremely high, the thickness of the dielectric layer is uniform, and the electrical performance consistency is good; the size precision and the circuit integrity of the product are guaranteed through the working procedures of drilling, etching, laser cutting and the like in combination with the precise temperature control and positioning technology. The method can be applied to the technical field of chip packaging.

The invention belongs to the technical field of cables, and particularly relates to a high-flexibility and high-fire-resistance composite sheath cable and a manufacturing method thereof. The composite sheath cable comprises conductors, insulating layers are extruded outside the conductors, the conductors extruded with the insulating layers form a cable core in a 0 + 6 structure, a center layer of the cable core is filled with a filling core, an inner sheath is extruded on the outer layer of the cable core, a fire-resistant shielding layer is lapped on the outer layer of the inner sheath, and a composite outer sheath is arranged on the outer layer of the fire-resistant shielding layer. Through the innovative layered structure and material design, the defect that a cable in the prior art is difficult to have high flexibility and high fire resistance at the same time is overcome, and the cable which is novel in structure and can still keep circuit integrity and fire resistance under severe mechanical stress is provided. The cable is suitable for special occasions with high vibration, frequent bending and extremely high requirements on fire resistance, such as robot drag chains, offshore oil platforms and internal wiring of automation equipment.

The utility model provides a kind of light control film of reinforced electrode structure, comprising: first transparent substrate (1-1), second transparent substrate (1-2) and the light control layer (2) being set between first transparent substrate (1-1) and second transparent substrate (1-2);First transparent substrate (1-1) and light control layer (2) between being provided with first transparent conductive layer (3-1), second transparent substrate (1-2) and light control layer (2) between being provided with second transparent conductive layer (3-2);First transparent conductive layer (3-1) is provided with first conductive lead (4-1) and second transparent conductive layer (3-2) is provided with second conductive lead (4-2);Wherein, first conductive lead (4-1) and / or second conductive lead (4-2) is covered with adhesive tape (5).The present scheme can avoid the hidden danger that adhesive film is easily adhered to conductive lead after light control film is made into light control glass, avoid the slight creep of adhesive film caused by internal stress such as thermal expansion and cold shrink in use process, cause the slight peeling between conductive lead and transparent conductive layer which is difficult to detect, eliminate the problem that the function of light control glass is failed due to the poor contact between conductive lead and transparent conductive layer, guarantee the circuit integrity of light control film / glass product and prolong service life.

The invention discloses a circuit breaker opening and closing monitoring system and monitoring method, and relates to the technical field of power system relay protection, and the system comprises a closing unit, an opening unit and a monitoring unit. The closing unit comprises a re-closing monitoring loop which is used for monitoring the conduction state of the circuit when the circuit breaker is closed next time in the closing state. The opening unit comprises a re-opening monitoring loop which is used for monitoring the conduction state of the circuit when the circuit breaker is opened next time in the opening state. The monitoring unit comprises a re-closing signal loop and a re-opening signal loop which respectively take the normally closed contacts of the corresponding relays as cores and convert the abnormal states of the loops into alarm signals sent to the background. The monitoring system realizes real-time and comprehensive monitoring of the integrity of the circuit breaker loop, and improves the absolute reliability of the action of the circuit breaker.

The invention discloses a method for manufacturing a circuit board with a locally-electroplated nickel-gold bonding pad and the circuit board, and the method comprises the following steps in sequence: plating copper on a board surface; manufacturing an initial bonding pad pattern; plating nickel and gold on the bonding pad; primary film stripping: exposing the copper layer and the nickel-gold layer higher than the copper layer; performing positive sheet treatment: exposing the side wall surface at the joint of the copper layer and the nickel-gold layer; tin plating treatment: electroplating tin on the side wall surface to form a tin layer; secondary film stripping: stripping the dry film on the surface to expose the copper layer and the nickel-gold layer; and etching processing: removing the copper foil by using an alkaline etching solution so as to process an outer-layer circuit. Through an innovative process of firstly plating copper, locally plating nickel and gold, then etching a positive plate and tinning to protect a circuit on the side wall of the bonding pad, the problems of infirm dry film lamination and etching medicine permeation caused by the height difference between a nickel-gold bonding pad and a copper surface in a traditional method are effectively solved, the yield and reliability of the circuit are remarkably improved, and the functions of the bonding pad and the integrity of the circuit are considered.

The invention discloses a device for monitoring data of an underground electric submersible pump, and relates to the technical field of power electronics. The underground parameter tester and the ground control box are used for collecting and managing underground data parameters, the depth, temperature, oil extraction state pressure, vibration, electric pump inclination conditions, voltage and current conditions near the underground electric submersible pump are collected respectively, and the well logging and well patrol workload can be reduced to the maximum extent; the underground real-time data can be analyzed to obtain whether the working position, the working state, the oil extraction working condition and the whole line of the underground electric submersible pump are normal or not, a clear and visual judgment basis is provided for a user, the electric submersible pump is protected, the service life of the electric submersible pump is prolonged, and the service life of a mine is prolonged.

A framework for continuously monitoring remote power shutdown. According to one aspect, a monitoring circuit (107, 207) is coupled to a power removal circuit (101). The monitoring circuit (107, 207) may generate an output signal indicative of circuit integrity based on one or more electrical characteristics of the power removal circuit (101). The notification system (110) may further be coupled to the monitoring circuitry (107, 207). A notification system (110) may generate a notification (112) based on the output signal.

The application relates to a gate circuit reliability critical path identification method, which comprises the following steps: S1, constructing a circuit integrity chain table to identify all paths existing in the circuit; S2, constructing a local probability matrix based on input probability distribution and output probability distribution; S3, constructing a circuit adjacency matrix; S4, obtaining a local adjacency probability matrix; S5, obtaining a global probability matrix; S6, reading all paths to obtain a reliability value matrix of each path, sorting the paths according to the numerical value of each row of the reliability value matrix, and obtaining a reliability critical path. Compared with the prior art, the application has the advantages of reducing the complexity of calculation under the premise of ensuring the evaluation accuracy.

The invention discloses a real-time monitoring method for the state of an opening and closing loop of a GIS isolating switch and a grounding knife-switch, belongs to the technical field of high-voltage switch equipment monitoring, and aims to solve the problems of low monitoring reliability, high false alarm rate and insufficient operation safety in the prior art. The method comprises the steps that double-relay monitoring hardware is deployed, and independent monitoring is achieved by adding a closing loop monitoring relay KHJ and an opening loop monitoring relay KTJ in series; static and dynamic combined opening and closing loop state monitoring logic is constructed, loop integrity is statically monitored, and a relay state and a contactor feedback signal are dynamically compared; a series alarm signal is output to form an AND logic alarm loop, so that the alarm accuracy is ensured; remote and local operation modes are compatible, electrical interlocking is implemented, and the operation safety is improved; data such as operation time and relay states are recorded in real time, logs are generated, remote retrieval is supported, the reliability and safety of a monitoring system are improved, and the system is suitable for intelligent operation and maintenance management of high-voltage switchgear.

The application relates to the technical field of electric wire and cable, and discloses a fireproof cable based on an overhead photovoltaic system, wherein the braided ring in the fireproof and flame-retardant layer is made of flame-retardant crosslinked polyethylene fiber winding, a large number of interlaced gaps are used to ensure air circulation, when encountering flame burning, after high-temperature gas enters the braided ring space, the flame-retardant crosslinked polyethylene fiber rope rapidly shrinks, the interlaced gap is reduced to form a dense physical oxygen isolation layer, on the other hand, the shrinkage traction force pulls the liquid discharge rod, the piston disc extrudes the flame-retardant liquid in the storage sleeve, the liquid is sprayed out through the liquid discharge hole, a part of the liquid directly acts on the flame area to extinguish the flame, most of the liquid is adsorbed and stored by the porous structure of the braided ring, the liquid is gradually decomposed and releases flame-retardant gas under the condition of continuous high temperature, the flame-retardant gas reacts with the braided ring fiber to form a liquid and solid composite heat insulation layer, the small pores remaining after shrinkage are filled, and the cable circuit integrity in the initial stage of fire is ensured.

The present application relates to a kind of reversible adhesion multilayer wearable circuit and its preparation method and application, comprising: S1, temperature triggered reversible adhesion film substrate preparation;S2, preparation of conductive ink;S3, circuit patterning;S4, the construction of multilayer circuit.The present application first utilizes side chain phase transition monomer, adjuvant and initiator, and is prepared into temperature triggered reversible adhesion film substrate, realizes the preparation of patterned circuit by printing conductive ink on substrate, and obtains multilayer circuit by the way of heating substrate.The multilayer circuit can be adhered with skin in high temperature low modulus state, can be detached in low temperature high modulus state, and can always keep circuit integrity, and has great application prospect in flexible wearable electronic field.

The utility model discloses a fireproof coating device for a cable joint, which relates to the technical field of cable joints and comprises an upper shell, jacks are arranged in the upper shell, a lower shell is arranged in the upper shell, fireproof cavities are arranged between the upper shell and the lower shell, and the fireproof cavities are communicated with the jacks. A plurality of discharging openings are formed in the opposite sides of the fireproof cavities, air bags are arranged on the two sides of the inner wall of each fireproof cavity, and the fireproof cavities are filled with fire extinguishing dry powder; according to the utility model, the fire extinguishing dry powder in the fireproof cavity enters the jack through the discharge port to extinguish the fire of the cable, and the air bags on the inner walls of the two sides of the fireproof cavity expand and become longer due to temperature rise, so that the fire extinguishing dry powder on the two sides of the fireproof cavity is pushed towards the middle discharge port, and more fire extinguishing dry powder falls down from the jack through the discharge port; fire spreading can be effectively prevented, fire risk is reduced, and it is ensured that the cable keeps circuit integrity in a fire.