72results about How to "Cost advantage" patented technology

The invention provides a circuit test system and method and related equipment, and the test system comprises a test mold, electronic test equipment and computing equipment, can test a plurality of circuit parameters in parallel, can complete a large number of tests in a short time for circuit boards produced in batches, can run according to a preset program, and is high in test efficiency. The test result is more accurate and stable, a high-precision test instrument can be equipped, tiny voltage and current changes can be accurately measured, the device has the characteristics of high efficiency and stability, the test cost can be reduced, defective circuit boards can be found and removed in time, defective products are prevented from flowing into the next process, the defective products are prevented from flowing out, and the rework cost is reduced. The test data can be automatically recorded and stored, subsequent data analysis and quality tracing are facilitated, and the test system has obvious advantages in the aspects of efficiency, precision, cost, data management, repeatability and the like and is suitable for large-scale and high-precision circuit board production requirements.

The invention provides an optical system of a laser radar transmitting lens. The optical system comprises a first lens, a second lens, a diaphragm, a third lens, a fourth lens, a fifth lens, an optical filter, protective glass and an image surface which are arranged in a direction from an object side to an image side. According to the invention, by reasonably using the lenses with specific shapes and structures and limiting the focal power of each lens, the field angle of the optical system is increased to 150 degrees and the relative illumination is greater than 90%, the radar detection field of view is wider and clearer, the F-theta distortion is less than 1%, the CRA is less than 1 degree, the detection distance and precision are improved, and the detection cost is reduced. According to the utility model, more accurate distance measurement data and farther detection distance can be provided, TTL is 29 mm, the size is small, miniaturization can be realized, the camera can be arranged in a vehicle, the matching of 2G3P glass and plastic enables the whole optical system to optimize high and low temperature excursion compensation, it is ensured that the lens does not have virtual focus at high and low temperatures, the cost is more advantageous, and the cost performance is higher.

The utility model relates to a multifunctional spring type breathable anti-explosion valve device. The multifunctional spring type breathable anti-explosion valve device comprises a breathable valve body (8), a first diaphragm (2), a second diaphragm (7), a first spring assembly and a second spring assembly. A first ventilation hole (8.1) and a second ventilation hole (8.2) are formed in the ventilation valve body (8); the first diaphragm (2) is connected with the breather valve body (8); and the second diaphragm (7) is connected with the ventilation valve body (8) and is arranged between the first diaphragm (2) and the first ventilation hole (8.1). Compared with the prior art, the spring type ventilating explosion-proof valve device has the advantages that the second diaphragm is additionally arranged to reduce external wet air flowing into the battery pack while the requirement on large ventilation volume of thermal runaway is met, and condensation of the battery pack is improved to the greatest extent to prevent short circuit in the battery pack.

The utility model relates to a detection system for a slide wire, which comprises a moving mechanism capable of moving along the slide wire; the first temperature sensor is arranged on the moving mechanism and is used for detecting the temperature of the slide wire; the camera is arranged on the moving mechanism and is used for shooting an image of the sliding contact line; the alarm device is used for carrying out alarm operation when the temperature of the slide wire is greater than a first preset temperature; a first communication connection exists between the control device and the first temperature sensor, a second communication connection exists between the control device and the camera, and a third communication connection exists between the control device and the alarm device; the control device is configured to receive the temperature of the sliding contact line from the first temperature sensor, receive the image of the sliding contact line from the camera when the temperature of the sliding contact line is larger than a first preset temperature, and activate the alarm operation of the alarm device. The utility model further relates to a transportation facility. According to the utility model, a continuous, automatic, reliable and efficient detection scheme is realized.

The invention relates to the technical field of hydrogen internal combustion engines, in particular to a device for increasing the tail gas temperature of a hydrogen internal combustion engine and enhancing pressurization and a control method thereof. Comprising the steps that an exhaust hydrogen combustion device and an electronic control unit are additionally arranged on an original exhaust manifold of an internal combustion engine, an auxiliary combustion chamber is installed on the upstream of a turbocharger, the oxygen exhaust flow is calculated through an exhaust flow sensor and an oxygen concentration sensor, the hydrogen spraying flow of a hydrogen nozzle is determined, and hydrogen-air mixed gas is ignited through a sparking plug; therefore, the tail gas enthalpy value of an inlet of the turbocharger is increased through combustion of hydrogen in the auxiliary combustion chamber, the supercharge ratio is increased, and then the inflation efficiency and the power density of the hydrogen internal combustion engine are improved.

The invention discloses a preparation method and application of a biochar material for adsorbing 2, 4, 6-trinitrochlorobenzene, and belongs to the technical field of environmental functional materials.The preparation method comprises the steps that hydrothermal carbon is prepared, specifically, straw is washed, dried, smashed and then sieved, a straw powder product a is obtained, the product a is put into a container, distilled water is added, after ultrasonic treatment is conducted, turbid liquid is obtained, and hydrothermal carbon is obtained; heating at a set temperature to obtain a product b; washing: centrifuging the obtained product b, washing with deionized water and ethanol, and carrying out vacuum drying to obtain a product c; activating: mixing the product c with a potassium hydroxide solid, and calcining in N2 atmosphere at a set temperature to obtain a product d; and neutralization: putting the product d into a hydrochloric acid solution for ultrasonic treatment, filtering to remove the hydrochloric acid solution, washing with distilled water, and drying to obtain a biochar product e adsorbing 2, 4, 6-trinitrochlorobenzene. According to the invention, cheap wastes are directly utilized to prepare the biochar adsorption material with excellent performance, and the biochar adsorption material can efficiently adsorb 2, 4, 6-trinitrochlorobenzene and has huge application value in industry.

The utility model discloses a rapid turn-off protection circuit which is characterized in that one end of a sixth resistor, a grid electrode of a second MOS tube and a grid electrode of a third MOS tube are all connected with an enabling end, the other end of the sixth resistor and source electrodes of the first MOS tube, the second MOS tube and the third MOS tube are all grounded, the grid electrode of the first MOS tube is connected with the drain electrode of the second MOS tube, and the grid electrode of the third MOS tube is connected with the enabling end. The drain electrode of the first MOS tube is sequentially connected with the first resistor and the second resistor and then connected with the first pin of the first power MOS tube, the first pin of the first power MOS tube is further connected with the first pin of the second power MOS tube, the fourth pin of the first power MOS tube is connected with the fourth pin of the second power MOS tube, the drain electrode of the third MOS tube is connected with the fourth pin of the second power MOS tube through the fifth resistor, and the drain electrode of the third MOS tube is connected with the fourth pin of the second power MOS tube. The base electrode of the first triode is connected between the first resistor and the second resistor, the collector electrode is connected with the fourth pin of the first power MOS tube, and the emitter electrode is connected with the first pin of the first power MOS tube. According to the utility model, the problem that the MOSFET tube is burnt out due to slow turn-off response caused by the influence of the junction capacitance of the MOSFET tube can be effectively solved.

A power amplifier integrated starting booster circuit comprises a Bluetooth chip U2 and a power amplifier chip U4, the 46th pin of the Bluetooth chip U2 is connected with the anode of a diode D5, the cathode of the diode D5 is connected with the base electrode of a triode Q3, the emitter electrode of the triode Q3 is grounded, the collector electrode of the triode Q3 is connected with the base electrode of a triode Q2 and one end of a resistor R26, and the other end of the resistor R26 is grounded. The 24th pin of the Bluetooth chip U2 is connected with the other end of the resistor R26 and one end of the resistor R25, the other end of the resistor R25 is connected with the sixth pin CTRL of the power amplifier chip U4, the VDD pin of the lithium battery is connected with one end of the inductor L4, the other end of the inductor L4 is connected with the anodes of the diode D6 and the diode D7, and the cathodes of the diode D6 and the diode D7 are connected with the 15th pin and the 24th pin of the power amplifier chip U4. The problem of large distortion caused by low voltage of the lithium battery is solved; and a plurality of lithium batteries do not need to be connected in series to improve the power of the power amplifier.

The invention belongs to the technical field of synthesis and preparation of aluminum nitride, and discloses a controllable and extensible preparation method of a one-dimensional aluminum nitride nanowire / nanotube, which comprises the following steps: (1) uniformly mixing a solid aluminum source and a solid nitrogen source, transferring the mixture into a rotatable crucible, transferring the crucible into a tubular furnace, sealing the tubular furnace, and carrying out heat preservation for 2-3 hours; vacuumizing and then introducing protective gas; (2) under the condition that protective gas is continuously introduced, the tubular furnace is heated to a preset target temperature for a nitridation reaction, and the nitridation reaction is carried out under the condition that a crucible rotates at a constant rotating speed; and after the reaction is finished, cooling the tubular furnace and stopping the rotation of the crucible to obtain a one-dimensional aluminum nitride nanowire or nanotube product. According to the method, the solid aluminum source and the solid nitrogen source are used as raw materials, and the crucible rotation is introduced during the nitridation reaction to carry out dynamic enabling improvement, so that the single-crystal aluminum nitride nanowire or nanotube with high purity and uniform morphology can be efficiently synthesized.

The invention relates to a wheel suspension (1) for a vehicle, comprising a wheel carrier (3) on which a wheel can be mounted such that it can rotate about a wheel axis of rotation (D) relative to the wheel carrier (3); a plurality of wheel guide arms (5, 6, 7, 8, 9) which are connected to the wheel carrier (3) in an articulated manner and are used for guiding the wheel carrier (3); a bearing spring (11) which is supported on a first of the wheel links (5, 6, 7, 8, 9) and is connected to the wheel carrier (3) via the first wheel link (6), via which bearing spring the wheel carrier (3) can be supported on the body of the vehicle in a spring-supported manner; and having a vibration damper (12) which is functionally connected in parallel to the bearing spring (11) and is arranged entirely outside the bearing spring (11), by means of which the wheel carrier (3) can be supported on the vehicle body in a damped manner; wherein the first wheel link (6) is arranged on a different side (S1) from at least one second wheel link among the wheel links (5, 6, 7, 8, 9), as viewed in the vehicle longitudinal direction (14), from the wheel axis of rotation (D).

The invention discloses a laser spot relative position measurement-based CA type five-axis machine tool rotating shaft zero error and axis error measurement compensation method. The method comprises the following steps of S1, detection system preparation: clamping or fixing a laser pen to a main shaft; s2, the A-axis zero error is measured and compensated, wherein the A-axis zero error is defined as the angle deviation between the actual posture and the theoretical ideal posture of the execution tail end of the machine tool when the rotating shaft is set to be at the 0-degree reference position; s3, measuring and compensating a C-axis zero error, wherein the C-axis zero error is defined as the angle deviation between the actual posture and the theoretical ideal posture of the execution tail end of the machine tool when the rotating shaft is set to be at the 0-degree reference position; s4, performing measurement compensation on the deviation of the A axis-main axis rotation center line in the Y direction; s5, measuring and compensating the deviation of the C-axis-main axis rotation center line in the Y direction; and S6, performing measurement compensation on the deviation of the C-axis-main axis rotation center line in the X direction.

This invention discloses an ultra-high strength and plasticity three-dimensional multi-level hybrid heterogeneous titanium-based composite material and its preparation method. The method includes: 1. performing a flow friction coating treatment on titanium alloy powder and modified amorphous cracked carbon with high active sites; 2. performing a flow friction coating treatment on modified high active and highly dispersed boron source; 3. low-temperature short-time high-pulse current-assisted vacuum hot pressing sintering; 4. multiple non-constant rate hot deformation treatments. This invention uses modified amorphous cracked carbon with high active sites and modified high active and highly dispersed boron source as reinforcing phase precursors to sequentially coat a titanium alloy powder matrix. Combined with sintering and hot deformation treatments, a multi-level, multi-scale, and multi-heterogeneous phase structure is constructed in four dimensions to obtain a three-dimensional multi-level hybrid heterogeneous titanium-based composite material, which exhibits ultra-high strength and plasticity, with a tensile strength of 1430 MPa to 1605 MPa and an elongation of 7.5% to 9%.

The application relates to the technical field of offshore wind power DC transmission, and discloses an offshore wind power bidirectional asymmetric feeding type DC transmission system and a control method thereof, which comprises a first conversion module, a second conversion module, a third conversion module, a switch module and an onshore conversion station, wherein the internal current flow path of the switch module is controlled, the third conversion module is used to establish an offshore collection voltage during black start, and after the black start is completed, the first conversion module and the second conversion module are connected to the system, so that the problem that an offshore wind farm cannot be black started is solved.

The present invention provides a power switch circuit device and a control method, including: a power switch circuit, a voltage detection circuit module and a main power supply; the voltage detection circuit module includes: a first voltage detection circuit and a second voltage detection circuit; the first voltage detection circuit is connected to the power switch circuit; the power switch circuit is connected to the second voltage detection circuit; the power switch circuit includes: a resistor R1, a resistor R2, a capacitor C3, a triode Q1, a triode Q2 and a triode Q3; one end of the resistor R1 is connected to the triode Q1 and the triode Q2; the other end of the resistor R1 is connected to the triode Q3; the present invention uses a battery capacitor as a backup power supply, achieving advantages in cost and volume. After the main power is off, the present invention can turn off the power supply circuit of the battery capacitor after the system completes the power-off operation to prevent over-discharge of the battery capacitor.

The application provides a two-stage MPC control method and system for power smoothing output, and relates to the field of new energy control. A discrete state space prediction model is constructed; all state variables are obtained in the current sampling period and used as the input of the first-stage MPC control; the mechanical and electrical state prediction sequence and the optimal control input are obtained by combining the constraint condition and the dynamic optimization objective function of the second-stage MPC control feedback in the last sampling period; in the second-stage MPC control, the optimal power trajectory meeting the smoothing requirement is obtained by combining the smoothing optimization objective function, and is mapped to the control constraint interval of the next sampling period and fed back to the first-stage MPC control; the optimal control input is applied to the execution equipment, and after the constraint condition is fed back to the first-stage MPC control, the next sampling period is entered. The application can inhibit the rapid fluctuation of the generated power without energy storage devices, improve the grid connection quality, and enable the renewable energy power generation system to still stably output under the severe changes of the external environment.

The invention discloses a multifunctional PLC expansion device based on an FPGA and a configuration method thereof.The device comprises the FPGA, the FPGA comprises a communication module, a function configuration module, a pulse output module, a serial port module, a pulse counting module and an IO control module, the communication module is used for receiving a configuration instruction, and the function configuration module is used for receiving the configuration instruction; the function configuration module is respectively connected with the communication module, the pulse output module, the serial port module and the pulse counting module, and is used for selectively activating any one of the pulse output module, the serial port module or the pulse counting module according to the configuration instruction; and the IO control module is respectively connected with the pulse output module, the serial port module and the pulse counting module for function output.

The invention relates to a drawer side wall (2) for a drawer (1), comprising a hollow profile (8) and a connecting device (6) for detachably connecting a front panel (3) and the drawer side wall (2), the connecting device (6) being arranged at least in some regions within the hollow profile (8), the connecting device (6) comprises at least one coupling device (18) for detachably coupling the drawer side wall (2) and a pull-out guide rail (11) of the drawer pull-out guide (9), the at least one coupling device (18) has at least one pivotable or bendable coupling rod (18b) for detachably coupling to a pull-out rail (11) of the drawer pull-out guide (9) and / or at least one coupling element (18a) which can be detachably coupled to the coupling rod (18b) for detachably coupling to a pull-out rail (11) of the drawer pull-out guide (9).

The invention relates to the technical field of waste resource utilization, in particular to application of a lithium iron phosphate recycled material and a method for preparing oil by catalyzing waste plastics. The method comprises the steps that firstly, electrolyte and a binding agent left on a waste positive plate are removed through segmented pyrolysis, and the lithium iron phosphate recycled material is obtained; and doping transition metal components to prepare a catalyst for catalyzing the waste plastics to prepare high-value oil products. According to the waste lithium iron phosphate battery, the lithium iron phosphate positive electrode waste is recycled and converted into the catalyst, the cost advantage is better achieved, high-value oil products are prepared by introducing transition metal elements, cooperating with iron elements in the battery waste and catalyzing waste plastics, and the value of waste utilization is maximized.

The utility model discloses a gas meter current control circuit based on M-Bus communication, which is characterized by comprising a transmitting end circuit and a receiving end circuit, the transmitting end circuit is connected with a single chip microcomputer, the receiving end circuit is connected with the transmitting end circuit through an M-Bus communication bus, the transmitting end circuit is used for converting a transmitting signal of the single chip microcomputer into a current signal, and the receiving end circuit is connected with the receiving end circuit through the M-Bus communication bus. And the receiving end circuit is used for detecting the current signal change and decoding the current signal change into a digital signal. Compared with the prior art, the gas meter current control circuit based on the M-Bus communication has the advantages that the gas meter current control circuit based on the M-Bus communication is carried out in a two-wire system communication mode, corresponding level signals are converted and modulated through current signals, the stability of signal transmission is improved, and the anti-interference capacity is improved.

A six-axis adjustment device for aligning a telephoto lens with a CMOS sensor. It includes a telephoto lens module, a fixed bracket, a six-axis adjustment mechanism, a plurality of screws, and a CMOS sensor; the fixed bracket is a bent structure, and the fixed bracket includes a vertical plate portion on the left side and a bottom plate portion; the six-axis adjustment device also includes a printed circuit board, and the CMOS sensor is arranged on the printed circuit board; the six-axis adjustment mechanism includes an adjustment bracket 1, an adjustment bracket 2, an adjustment bracket 3, and an adjustment bracket 4 arranged in sequence from the inside to the outside; the printed circuit board is fixed to the adjustment bracket 1 through screw holes. The mechanism realizes the alignment of the telephoto lens module and the CMOS sensor by adjusting the position of the CMOS sensor, and adopts an integrated six-axis mechanism to facilitate the precise control of the position of the CMOS sensor. The mechanism can greatly improve the qualified rate and production efficiency of product assembly production.

This application relates to a stacked interlocking semiconductor packaging structure, comprising: a substrate, a base plate, two chips, a packaging layer, and a protective shell; the substrate is disposed on the top surface of the base plate, and two chips are disposed on the substrate, with the packaging layer encapsulating the chips and the substrate; the protective shell is disposed on the top surface of the base plate and surrounds the sidewalls of the packaging layer; the protective shell includes: two or more stacked rings, each ring having a limiting groove on its inner sidewall, and the packaging layer having multiple limiting protrusions on its sidewalls, the limiting protrusions matching the limiting grooves for embedding within the limiting grooves. The protective shell surrounding the packaging layer effectively isolates and protects the packaging layer, preventing damage caused by direct exposure of the packaging layer's sidewalls to the outside. This application utilizes a stacked, interlocking ring structure to reliably complete the packaging process of microelectronic components or semiconductor devices; the overall structure is simple and easy to manufacture; it has significant advantages in terms of process speed and cost.

The invention relates to a frame interface for an electric bicycle, comprising a frame element with a first fastening region and a second fastening region, and comprising a fastening element, wherein the first fastening region is provided for the bearing-like fastening of a drive unit on the frame element, wherein the fastening element is fastenable on the second fastening region, wherein the second fastening region has a first clamping surface and the fastening element has a second clamping surface, which are provided for jointly encircling at least one partial region of the drive unit in a ring shape, in order to fasten the drive unit on the second fastening region by means of a clamping force.

The invention discloses an unbalanced bridge method direct current insulation detector with a compensation correction function. The detector takes a microcontroller as a core and is connected with an unbalanced bridge detection module, a key setting module, a communication module, a detection indication module and an alarm output module; the unbalanced bridge detection module comprises an unbalanced bridge circuit and a signal conditioning circuit, the unbalanced bridge circuit is used for establishing an unbalanced bridge loop between the positive electrode and the negative electrode of the detected direct current system and the ground, and when the direct current system has insulation imbalance, an unbalanced voltage signal is output; after being amplified and filtered by the signal conditioning circuit, the signals are input into the microcontroller, the microcontroller calculates to obtain positive electrode resistance to ground and negative electrode resistance to ground and compares the positive electrode resistance to ground and the negative electrode resistance to ground with a threshold value, and when a detection result is lower than the threshold value, an alarm is triggered or a fault loop is cut off. According to the invention, a hardware and software combined compensation correction technology is adopted, and the method has the advantages of fast detection speed, high precision, strong anti-interference capability and flexible communication.

The invention relates to a micromechanical component for a stress sensor, having a first substrate (10) with a first substrate surface (10a), a second substrate (12) with a second substrate surface (12a) and an evaluation electronics (20) configured at and / or in the second substrate (12), wherein the first substrate (10) is fixed at the second substrate (12) by means of at least one electrical connection (22) formed by means of a metal bonding method, which is configured in an intermediate volume (14) between the first substrate surface (10a) and the second substrate surface (12a), wherein at least one electrode (16, 16a, 16b, 62) and at least one counter electrode (18a, 18b, 18c) are arranged in the intermediate volume (14), wherein the at least one electrode (16, 16a, 16b, 62) and / or the at least one counter electrode (18a, 18b, 18c) are electrically connected at the evaluation electronics (20) by means of the at least one electrical connection (22) formed by means of a metal bonding method.

The invention provides an in-situ polymerized lithium iron phosphate-bright aluminum foil composite positive electrode and a preparation method thereof, and relates to the field of lithium batteries. According to the positive electrode slurry, the functional additive A and the functional additive B are adopted for compatibility, and the additive B is a compound of which the molecular structure simultaneously contains polymerizable carbon double bonds and phosphate groups and is used for linking an inorganic surface and an organic polymer; the functional additive A and the functional additive B are compatible to construct a three-dimensional stable chemical bonding network, and a dynamic gradient conductive interface layer with high conductivity and strong binding power is constructed on the surface of the optical aluminum foil in situ, so that the risk that an active material falls off from a current collector in the later period of circulation is greatly reduced, and the interface resistance is remarkably reduced; the mechanical stability of the pole piece is remarkably improved (the interface bonding strength can still be kept at 90% after 1000 times of circulation), and the cycle life is long.

An apparatus (1) includes a self-centering device (2) for centering and guiding a bar (B), tube, or the like to be fed into the spindle of a machine tool. The apparatus includes a hollow housing (3) with a through-hole (5) having a longitudinal axis (X) for receiving the bar (B) to be fed into the spindle along a feeding direction (A). An inner sliding surface (4) is defined within the housing (3) and inclined relative to the longitudinal axis (X). Centering and guiding elements (6) are provided. It is housed in a hollow body (3) and shaped to contact the rod (B) and apply distributed centering and guiding action thereon; the centering and guiding element (6) is able to slide along the inner surface (4) at a distance from the longitudinal axis (X) to accommodate different rod (B) diameters; in the body (3), an elastic device (7) is housed to push the centering and guiding element (6) to a position with minimum reciprocating distance, thereby making and maintaining the centering and guiding element (6) in contact with the surface of the rod (B) during operation. A propulsion device (30) for a bar (B) is also disclosed, comprising: a support and guide member (31) configured to continuously receive the bar (B) from a first side (L1) and configured to guide the bar (B) along a propulsion direction (A); a movable gripping member (32) moving from a disengaged position (P1) and further from the member (31) to be separated from the bar (B) to a locked position (P2) closer to the support member (31) to longitudinally press the bar (B) against the support member (31) from a second opposing side (L2); and a propulsion engine device (M) configured to rotate the support and guide member (31) and / or the movable gripping member (32) at the locked position (P2) to drag the bar (B) along the propulsion direction (A).

In order to achieve improvement in running stability and operability, improvement in freedom of design layout, ease of assembly and adjustment, and compliance with the riding feeling of the user with a simple configuration, on a running unit (140), a neutral restoration mechanism (160L, 160R) is provided which supports a pair of left and right wheels (155L, 155R) by upper and lower moving swing arms (151L, 151R) in a staggered linkage and has an extension member (165L, 165R) that extends and contracts in accordance with the swing of the swing arms (151L, 151R), the neutral restoration mechanism (160L, 160R) being configured so that the torque acting on the swing arms (151L, 151R) by the restoration force of the extension member (165L, 165R) is substantially constant and independent of the amount of swing of the swing arms (151L, 151R). The running vehicle is provided with the above-described running unit (140).

A magnetism measurement device has a first magnetic sensor (An) that detects magnetism acting along any first direction, a second magnetic sensor (Bn) that detects magnetism acting along a second direction crossing the first direction in which the first magnetic sensor detects magnetism, and a magnetic field generating part (Cn) that causes a magnetic field to be generated in response to energization, and the magnetic field generating part (Cn) is incorporated in a state in which positions opposed to the first magnetic sensor (An) and the second magnetic sensor (Bn) are fixed, so as to act with magnetism along the first direction and the second direction in response to energization.

The application provides a wide free spectral range multispectral imaging chip structure, which comprises a pixel photosensitive unit and a light splitting unit, the pixel photosensitive unit is divided into a plurality of pixel regions along one of pixel directions a in sequence, and the other pixel direction b is not distinguished; the light splitting unit comprises a plurality of light splitting structures, the plurality of light splitting structures are integrally deposited and grown on the plurality of pixel regions one by one respectively, the light splitting structures are used for realizing narrowband filtering, and the plurality of light splitting structures respectively cover different spectral ranges. The application scheme breaks through the limitation of the free spectral range due to the material refractive index difference, and widens the free spectral range of narrowband filtering of a monolithic image sensor.