34results about How to "Easy Traceability" patented technology

The invention relates to a large-scale integrated calibration device for various optical fiber strain sensing systems. The large-scale integrated calibration device for various optical fiber strain sensing systems is used for calibrating strain coefficients of a BOTDA (Brilouin Optical Time Domain Analyzer), a BOTDR (Brillouin Optical Time Domain Reflectometer) and a FBG (fiber bragg grating) demodulation instrument, comprises a tested BOTDA, a tested BOTDA, a tested FBG demodulation instrument, a statical strain indicator, a large-scale triangle cantilever beam, an optical fiber, an optical fiber in which a FBG is written, a FBG, a strain gauge and an optical fiber and has the acting length of over 1,200mm and the accuracy of 1mu epsilon. Compared with the prior art, the large-scale integrated calibration device for various optical fiber strain sensing systems has the advantages of long acting length, high accuracy and low cost.

The invention discloses a uniformity measurement device for an infrared radiation surface. The device comprises a high-resolution small light spot sampling and imaging optical system, an infrared detector, a preamplifier, a band-pass filter, a main amplifier and analogue / digital (A / D) conversion circuit, a two-dimensional precision electric control displacement system, a driving circuit for the two-dimensional precision electric control displacement system, a master control computer and a main interface circuit, wherein the high-resolution small light spot sampling and imaging optical system is used for focusing infrared radiation surface sampling points onto the infrared detector; the master control computer is used for transmitting a driving instruction to the two-dimensional precision electric control displacement system through the main interface circuit; and the infrared detector is used for converting a measured infrared radiation signal into an electrical signal, and transmitting the electrical signal to the master control computer to finish data processing through the preamplifier and the main amplifier and A / D conversion circuit. The uniformity measurement device for the infrared radiation surface is simple in structure, low in cost, high in test efficiency, speed and measurement accuracy, large in measuring point number and easy for tracing to the source.

The invention provides a logistics industry information platform system based on the alliance block chain, which adopts a layered architecture, including an application interaction layer and a block chain consensus layer; the application interaction layer is responsible for packaging user data and operations into standard-compliant digital Assets, and then send various requests to blockchain nodes in the form of pre-defined standard transactions to complete user operations, and finally store data on the blockchain; the blockchain consensus layer includes P2P to maintain the blockchain The node network and the only block chain jointly maintained by the nodes in the system; the nodes in the P2P node network include endorsement nodes, organization nodes and submission nodes, and any node has the ability to update the block chain.

The invention discloses an off-line detection method for a knock abnormal sound of a gearbox. Firstly, based on a statistics method, a random impact interference component in a vibration signal is removed; then, based on a TSA method, a periodic impact component representing the knock abnormal sound of the gearbox is extracted; finally, a kurtosis index of the signal is calculated and extracted tobe compared with a set abnormal sound threshold value, in this way, whether or not the knock abnormal sound of the gearbox exists is judged, and an abnormal sound source is locked on a rotary shaft.The off-line detection method can be applied to the off-line detection stage of the gearbox, in a random impact interference environment, the knock abnormal sound of the gearbox is automatically detected, wrong judgment and judgment missing in human ear detection are avoided, the knock abnormal sound of the gearbox is automatically detected, and the off-line detection method has the advantages ofrealizing uniform evaluation standards, being high in efficiency and low in cost, and easily tracing to the source of the problem.

The invention provides an anti-cheating supervision method for an electronic scale. The method comprises the following steps: initialization: initializing the electronic scale and uploading to a server for saving and recording; activation: forming an electronic scale ID and a key matched with the electronic scale specific to the approved electronic scale through the server, issuing the electronic scale ID and the key to a handheld terminal, transmitting the electronic scale ID and the key to the electronic scale through an NFC (Near Field Communication) function by using the handheld terminal, writing the electronic scale ID and the key into an NFC tag; verification and authorization: after the electronic scale is activated, performing verification and authorization operation on the electronic scale through the handheld terminal, wherein only the successfully-verified electronic scale can display normally; unpacking authorization: when the electronic scale is damaged, performing unpacking authorization operation on the electronic scale through the handheld terminal, wherein only the electronic scale with unpacking authorization can be unpacked for maintenance. By adopting the anti-cheating supervision method, a law breaker is prevented from cheating on the electronic scale, detailed information of the electronic scale and operation information of electronic scale management personnel can be recorded on the server, and convenience is brought to unified management of a supervision unit.

The present invention concerns a method for controlling access to a storage bin (102). When the item is delivered to the storage device (102), an access code is sent to the recipient. When the recipient enters the access code, the access code is accepted and access to the storage device (102) is permitted. The invention also provides a system for controlling access to a storage device (102) protected by a closure. The system includes a processor (112) configured to transmit an access code to the recipient when an item for the recipient is delivered to the storage device (102), recognize the access code entered by the recipient, and The closure allows a recipient to access the storage device (102).