37results about How to "Judgment integrity" patented technology

The invention discloses a sensor for measuring the corrosion of the inner wall of a metal tank body and a monitoring method. The sensor is of the following structure that the sensor comprises a fixing device, a sleeve, a reference electrode, an auxiliary electrode and a working electrode; and in the measuring process, the sensor is arranged at the top of a metal tank, the metal tank and the sensor are fixed and are tightly contacted through magnets, the electrodes partly extend into the tank to be in contact with a solution for performing an electrochemical detection, and a contact of the working electrode is attracted by the magnets to be fixed on the outer surface of the tank body. In the monitoring process, the corrosion behavior and degree of the inner wall of the metal tank are tested by utilizing an electrochemical low-frequency impedance spectroscopy technology. In the technical scheme disclosed by the invention, the sensor has simple manufacturing process, is sensitive to response, is convenient to carry and is simple to operate; the monitoring method is simple and convenient and has high data resolvability; the breakage condition, the breakage type and the corrosion degree of a coating on the inner wall of the metal tank can be rapidly judged in the service environment by the monitoring method; and the monitoring method is suitable for carrying out rapid detection andevaluation on the corrosion degree of the coatings on the inner walls of the metal tanks with various sizes.

The invention provides detection liquid for detecting the corrosion resistance of a surface passivation film of a tinned steel plate. The detection liquid comprises the following component in parts by total weight: 0.1-5 parts of inorganic acid, 0.01-5 parts of organic acid, 0.1-5 parts of an oxidant, 0.05-2.5 parts of a complexing agent and 82-100 parts of water, wherein the inorganic acid is one or more of hydrochloric acid, sulfuric acid, nitric acid and phosphoric acid; the organic acid is one or more of lactic acid, citric acid and glycolic acid; the oxidant is ferric trichloride and/or copper chloride; the complexing agent is potassium ferricyanide. The invention further provides a method for detecting the corrosion resistance of the surface passivation film of the tinned steel plate. According to the scheme provided by the invention, the intensity of the corrosion resistance of the surface passivation film of the tinned steel plate can be intuitively and accurately evaluated according to the color change of the detection liquid dropwise added onto the surface passivation film of the tinned steel plate and/or the change of state of corrosion points on the surface passivation film.

The invention discloses a high-voltage interlocking loop of an electric automobile and an open circuit detection method. The high-voltage interlocking loop comprises an output voltage detection circuit, an output voltage conditioning circuit and an electric control unit. One end of the output voltage detection circuit is electrically connected with a low-voltage power supply and the other end is grounded. The output voltage detection circuit comprises multiple serially connected detection units. Each detection unit comprises a bridge and a resistor, wherein the bridge is serially connected with the resistor. The bridges and corresponding high-voltage connectors are integrated together, and the high-voltage connectors are firstly disconnected at the time of disconnection. One end of the output voltage conditioning circuit is electrically connected with a connection point of an adjacent detection unit and the other end is electrically connected with an electric control unit. The open circuit detection method comprises steps of the high-voltage detection circuit outputs a voltage detection signal to the electric control unit through the output-voltage conditioning circuit; the electric control unit analysis a voltage detection signal; integrity of the high-voltage interlocking loop is diagnosis; and a false high-voltage connector is judged. Thus, reference is provided for maintenance and fault removing of the electric automobile high-voltage loop.

The invention discloses an electric vehicle high-voltage interlocking loop and an open circuit positioning method. The high-voltage interlocking loop comprises a voltage detecting circuit, a referencevoltage generating circuit, a voltage comparator circuit and an electric control unit. The open circuit positioning method includes the steps that the voltage detecting circuit outputs a detecting voltage signal to a voltage comparator in the voltage comparator circuit; the reference voltage generating circuit outputs a reference voltage signal to the voltage comparator in the voltage comparatorcircuit; the voltage comparator compares the detecting voltage signal with the reference voltage signal to generate a two-level digital switch signal to be input to the electronic control unit. The electronic control unit analyzes the two-level digital switch signal generated by the voltage comparator to judge the integrity of the high-voltage interlocking loop, and then judges the integrity of anelectric vehicle high-voltage loop, and a reference is provided for maintenance and troubleshooting of the electric vehicle high-voltage loop.

Disclosed is an on-off input loop self-checking circuit based on a pulse injection method. A spike self-checking pulse is generated through control of an IO pin of a CPU and is injected to an on-off input loop, and, after the spike self-checking pulse goes through an optical coupler, the spike self-checking pulse is acquired by an ADC analog-to-digital conversion pin of the CPU and is judged; the IO pin of the CPU is connected with an input end of the optical coupler, an output end of the optical coupler is connected with an input end of an optical MOS tube, a source electrode of the optical MOS tube is connected with a common anode of a power supply, a drain electrode of the optical MOS tube is connected with one end of a safety capacitor, and the other end of the safety capacitor is accessed into the on-off input loop. After a spike self-checking pulse signal generated due to drive of the IO pin of the CPU is injected to the on-off input loop, the ADC analog-to-digital conversion pin of the CPU acquires a waveform of a secondary side of the optical coupler, processing, analyses and comparison are performed, and then a self-checking judgment for integrity of the on-off input loop is achieved; and a self-checking mode can be applied no matter an on-off signal is in any state, and the self-checking loop has the extremely high isolation capability and reliability.

The invention provides a low-strain double-speed signal averaging detection method for a building hollow pile. The low-strain double-speed signal averaging detection method for the building hollow pile is applied to a pile body of the building hollow pile. The method comprises the steps of determining a knocking point on the surface of the pile top of the building hollow pile; arranging two or more signal acquisition devices on the surface of the pile top of the building hollow pile as measurement points for the pile body of the hollow pile, wherein an included angle of 45 degrees is formed between the position where one of the signal acquisition devices is arranged and the knocking point, and an included angle of 135 degrees is formed between the position where the other signal acquisition device is arranged and the knocking point; when knocking action at the knocking point is received, obtaining a measurement point signal from each signal acquisition device, and obtaining a double-speed test curve containing all the measurement point signals; and conducting averaging processing on the double-speed curve, so that a detection result of the pile body of the building solid pile is obtained. By means of the detection result obtained through the detection method, compared with an existing sampling method, pile body integrity of the pile body of the building hollow pile can be judged more accurately.

The embodiment of the invention provides an industrial Internet data security monitoring method based on a block chain. The method comprises the following steps that the block chain acquires a homomorphic tag corresponding to monitoring data through an intelligent contract; the block chain opens the access permission of the intelligent contract to an authorization verifier, so that the verifier can obtain the homomorphic tag and send challenge information generated according to the homomorphic tag to the cloud; the block chain opens the access permission of the intelligent contract to the cloud, the cloud can acquire the homomorphic tag and send the certificate generated according to the homomorphic tag and the challenge information to the verifier, so that the verifier can perform comparative analysis according to the certificate to judge whether the integrity of the monitoring data is damaged or not, and a reliable data basis is provided for industrial Internet data security monitoring. The embodiment of the invention further provides an industrial Internet data security monitoring system based on the block chain. According to the invention, reliable protection can be provided for data security of the industrial Internet.

The invention provides a data transmission method and electronic equipment, the method is applied to an external terminal of a unidirectional non-feedback system, and the method comprises the following steps: receiving network data packaged by a transmission protocol determined by negotiation; analyzing the network data based on the transmission protocol to obtain a to-be-sent data link composed of a plurality of data blocks, the plurality of data blocks respectively corresponding to a plurality of commands in the transmission protocol; packaging a to-be-sent data link based on a one-way transmission protocol, and sending the packaged to-be-sent data link to an internal terminal of the one-way non-feedback system, a communication protocol header of the one-way transmission protocol comprising a plurality of fields used for describing the characteristics of the plurality of data blocks, and a communication protocol header of the one-way non-feedback system comprising a plurality of fields used for describing the characteristics of the plurality of data blocks; and sending the fields to the internal terminal, so that the internal terminal can at least identify the received data blocks based on the fields, and determine the integrity of the received data blocks. Based on the data transmission method provided by the invention, the data can be efficiently and accurately ferried fromthe external terminal to the internal terminal.

Disclosed is a stave which is provided with a stave provided on the inner peripheries of the bosh and the belly of a blast furnace. The stave is provided with: a copper or copper-alloy stave body having a reference surface facing the internal space of the blast furnace; and a plurality of protrusions protruding from the reference surface toward the internal side of the blast furnace.

The invention discloses a screw-thread steel intelligent connector. According to the technical scheme, the screw-thread steel intelligent connector comprises outer sleeves and a connecting casing; theconnecting casing is provided with a stepped groove; the outer sleeves and the connecting casing are mounted in a combined manner; a steel bar bonding part, a first spring and a second spring are arranged in each outer sleeve; the steel bar bonding parts are arranged in the outer sleeves; one end of each first spring is mounted in the corresponding steel bar bonding part, and the other ends of the first springs are arranged in the second-stage step of the groove; and the second springs are arranged in the groove. Stability is high, the steel bar connector can bond steel bars closely, no loosening is generated, the steel bar stability is good, and strength is high.

An article verification method comprises: enabling a shipper to attach a mixed tag to an article and shoot a related video; obtaining mixed label image information from the consigner video; obtaining an image of the mixed label shot by the receiver; comparing the mixed label image extracted from the video of the delivery party with the mixed label image shot by the receiving party, and judging whether the two mixed labels are consistent or not, the mixed label comprising an identifier and a writing label, and judging whether the mixed label is consistent or not, respectively judging whether the identifier is consistent or not and judging whether the writing label is consistent or not. According to the article verification method, based on an innovative digital image processing method, the consistency of the delivered goods and the received goods is verified by verifying the consistency of the labels, circulation of the goods can be effectively monitored, the goods can be prevented from being exchanged in the circulation link to a great extent, and therefore the method has high commercial value in the field of electronic commerce.

The invention discloses a distributed data transmission method and system between server nodes and a storage medium, and relates to the technical field of data transmission, and the method comprises the steps: obtaining an order number in an order, and obtaining a server node related to the order from an order information table according to the order number, and the server node comprises at least one first server node; the first server node sends a data request to other server nodes except the first server node, and judges whether at least one second server node meeting a preset condition exists or not; if the second server node exists, the first server node obtains the test data packet from the second server node; and if the second server node does not exist, the first server node obtains the test data packet from the main server. According to the invention, the data transmission efficiency can be improved in a manner of mutually transmitting data packets among a plurality of servers, and the data transmission efficiency is greatly improved.

The invention provides a power supply ripple test device. The power supply ripple test device comprises a test shell, a display module and a blocking module, the test shell covers the outside of the to-be-tested module, a positive electrode contact end and a negative electrode contact end are arranged in the test shell, the positive electrode contact end is connected with the positive electrode of the to-be-tested module, and the negative electrode contact end is connected with the negative electrode of the to-be-tested module; a display module; and one end of the blocking module is connected with the positive electrode contact end and the negative electrode contact end through a first connecting line, and the other end is connected with the display module through a second connecting line. When the power supply ripple and noise are tested, only the positive electrode contact end and the negative electrode contact end of the test shell need to be clamped at the two ends of the power supply to be tested, a worker does not need to hold the probe all the time, convenience is improved, and force is uniform in the testing process. And moreover, the ripple and noise of the power supply are tested in a clamping manner, repeated welding is not needed, a large amount of welding time is saved, and the operation is simple and efficient.