35results about How to "Avoid manual detection errors" patented technology

The invention claims an electric energy meter verification unit and a working method thereof, relates to a single-phase, three-phase electric energy meter verification unit and the working method thereof. At present, in the electric energy meter verification process, a verification system is artificial and mainly comprises a plurality of groups of artificial detection table bodies, and the method has the disadvantages of large labor intensity, manual errors and slow integral verification speed. The electric energy meter verification unit provided by the invention comprises a logistics conveying line, a feeding device, a verification conveying line, a pressure withstand testing device, a program switch triggering device, a verification device, a lead seal and laser making device, a discharging device and an electric energy meter verification management module, wherein the feeding device, the pressure withstand testing device, the program switch triggering device, the verification device, the lead seal and laser marking device and the discharging device are orderly arranged along a forward direction of the verification conveying line. The electric energy meter is in full automatic verification, high in efficiency, free from of manual detection errors, and can improve the accuracy of sorting; and the laser marking replaces the traditional form of sticking a certification so that the electric energy meter is convenient for management and use.

The invention discloses a high-reliability DC power supply for a substation and a testing method. In order to overcome the problem that the battery packs of the prior art DC power supply system are connected in series and have poor reliability; the charging and discharging experiments cannot fully discover the hidden dangers of battery failure; the present invention adopts a busbar, AC / DC module, circuit breaker and DC load; The battery pack; the bidirectional DC / DC module is set between the DC bus and the battery module to indirectly control the charging and discharging of the battery module; the monitoring unit monitors the data of the battery module, judges the state of the battery module according to the data, and controls the bidirectional DC / DC The output voltage of the module; the host computer is connected with the monitoring unit through a communication protocol, receives and stores monitoring data, and sends control commands remotely. Guarantee the power supply of the DC system, avoid the lagging effect of a single battery pack, and improve reliability; the smoother process of the battery pack is simple; it can realize the checking discharge of 100% of the rated capacity of the DC power supply, and completely find out the hidden dangers of failure.

The invention discloses a sound detection method, device and system of a display device, wherein the sound detection method of a display device includes a signal source interface, and the sound detection method includes the following steps: The audio output by the display device, the audio output by the display device is generated based on the audio detection signal input to the signal source interface; the audio collected by the audio collection device is analyzed to obtain a sound detection result. The display detection method provided by the present invention can replace workers to detect display devices, so as to avoid manual detection errors, such as missed detection, false detection and the like.

The invention relates to a device for calibrating the center of a wafer, comprising: a stage, a stopper, a distance measuring sensor and a controller; the top surface of the stage is higher than the distance measuring sensor, and the distance measuring sensor is arranged on one side of the stage , the block is located directly above the ranging sensor; the carrier is used to place the wafer and drive the wafer to move; the ranging sensor is used to obtain horizontal and vertical spacing information; the controller is connected to the ranging sensor to control The controller is used to control the carrier to rotate at a preset angle, or to control the carrier to move in a direction approaching or away from the distance measuring sensor. The information of the ranging sensor is processed by the controller to determine the wafer whose center position is shifted. It is possible to quickly screen out wafers whose center position is shifted, improve the efficiency of wafer center calibration, and effectively avoid manual detection errors.

The invention relates to a method and device for detecting the position of a filling material in a pipe, and the method comprises the steps: selecting a first pipe, a second pipe and a third pipe, which are all provided with the filling materials; respectively carrying out the image collection of the first, second and third pipes under the same image collection condition, so as to respectively obtain a first image, a second image and a third image; calculating the statistics parameter Em of the attribute information of the first and third images and the statistics parameter Ep of the attribute information of the second and third images; carrying out the image collection of a to-be-detected pipe, so as to obtain a fourth image, wherein the to-be-detected pipe is the same as the first, second and third pipes and has the filling material; calculating the statistics parameter Ew of the attribute information of the third and fourth images; comparing Ew with Em and Ep, and determining whether the height of the filling material in the to-be-detected pipe accords with a preset standard or not according to the comparison result of Ew, Em and Ep. The method improves the detection efficiency of the position of the filling material in the pipe.

The invention discloses a detector of a cigar lighter. The detector comprises a signal detection acquisition system and a data detection process and display system, wherein the signal detection acquisition system consists of alternating current, a switching power supply, a current transformer and an analog-to-digital conversion module EM231, the alternating current is electrically connected with the switching power supply, the switching power supply is electrically connected with the cigar lighter, the current transformer is in parallel connection with a branch circuit which is connected with the cigar lighter, and the current transformer is connected with the analog-to-digital conversion module EM231; and the data detection process and display system consists of a SIMENS PLC (programmable logic controller) and a touch screen, and the SIMENS PLC S7-200 is connected with the analog-to-digital conversion module EM231 by signals and is electrically connected with the touch screen. The detector of the cigar lighter, disclosed by the invention, can finally detect a finished product of the cigar lighter, avoids unknown errors in an assembly process, and has the advantages of simple device, convenience for operation and good visualization effect.

The invention relates to a screw detection device, in particular to a screw thread detection device and detection method, including a workbench, which is provided with a clamping mechanism for clamping the screw to be tested, and an X-direction clamp is also provided on the workbench. For the main camera, a first backlight panel is arranged opposite to the main camera in the X direction, and an auxiliary camera in the Y direction is arranged on the workbench, and a second backlight panel is arranged on the opposite side of the auxiliary camera in the Y direction. The present invention adopts two vertical direction cameras of X and Y The acquisition and correction method of parameters such as screw tooth shape under the condition of backlight is carried out, and the automatic image detection of thread is realized.

The invention discloses an online detector for frame assemblies. The online detector for frame assemblies comprises a reference platform, a detection master, a support, a pneumatic correcting trolley, and a control system. The detection master is used for three-dimensionally detecting technical indicators such as linearity, planarity, parallelism, diagonals, coaxiality and width for a frame assembly. The support is used for storing the frame assembly to be detected. The pneumatic correcting trolley is used for calibrating the position of the frame assembly stored on the support. The frame assembly to be measured is supported by the support and is automatically calibrated by the pneumatic correcting trolley, and the technical indicators of the detection master such as linearity, planarity, parallelism, diagonals, coaxiality and width are measured by the detection master. All operations are automatically completed by the control system with no need of manual operation intervention, measurement is more efficient, artificial errors are avoided effectively, and measurement is more precise.

The invention discloses a method for detecting the service life of a metal knuckle bearing in a fixing hinge of a low-floor tramcar, and the method comprises the steps: setting the metal knuckle bearing in the fixing hinge of the low-floor tramcar into three parts: a metal knuckle external seat sleeve, an external rolling ball sleeve, and an internal rolling ball; setting the external rolling ball sleeve in the metal knuckle external seat sleeve, setting the internal rolling ball in the external rolling ball sleeve, and setting a first wear-resistant lining between the metal knuckle external seat sleeve and the external rolling ball sleeve; making the spherical contact between the internal rolling ball and the external rolling ball sleeve and between the external rolling ball sleeve and the first wear-resistant lining, and combining the metal knuckle external seat sleeve, the external rolling ball sleeve, the internal rolling ball and the first wear-resistant lining to form an integrated metal knuckle bearing through screws; and detecting the service life of the integrated metal knuckle bearing through detecting the wear degree of the first wear-resistant lining. According to the invention, the method can achieve the accurate detection of the service life of the metal knuckle bearing in the fixing hinge of the low-floor tramcar, reduces the maintenance cost, and guarantees the use performance and safety performance.