78results about How to "Little external interference" patented technology

The utility model relates to the technical field of circuits capable of automatically changing measuring ranges, in particular to a multi-measuring-range automatic switching circuit, which comprises measuring range control circuits with a plurality of measuring ranges, and is characterized in that each measuring range control circuit is used for carrying out current measurement in a corresponding measuring range so as to be displayed on an ampere meter; the current detection circuit is connected with each range control circuit and is used for detecting the current of each range control circuit; and the MCU main controller is respectively connected with the current detection circuit and each range control circuit and is used for comparing the current of each range control circuit with the corresponding set current and controlling whether each range control circuit is conducted or not according to the result. The situation that ampere meters with different measuring ranges are manually replaced can be reduced.

The invention relates to a control system and a control method of a water pump. The control system comprises a continuous liquid level detection unit installed on a pump body of the water pump and used for detecting and obtaining real-time liquid level information of the water pump; the wireless communication unit is used for receiving starting and / or stopping liquid level setting information of the water pump from a user side; the main control unit is connected with the continuous liquid level detection unit and the wireless communication unit and used for receiving the real-time liquid level information and starting and / or stopping the liquid level setting information so as to output corresponding control signals to control starting and stopping of the water pump. A user can remotely, flexibly and linearly adjust the starting liquid level and the stopping liquid level of the water pump at the user side according to the requirement of the actual operation environment of the water pump, the requirements of different seasons and climates can be met, the installation height of the liquid level detection unit on the water pump does not need to be changed, and operation is easy and convenient.

The invention relates to the field of machine tools, in particular to a five-axis linkage high-speed high-precision machining center which comprises a machine base, a three-axis moving module and a main shaft device are arranged at the top of the machine base, and the three-axis moving module is used for driving the main shaft device to move in the three different directions of the X axis, the Y axis and the Z axis. The main shaft device comprises at least one main shaft capable of rotating and / or feeding and is used for carrying out machining operations such as cutting, drilling and milling on a workpiece; a cradle type rotary table device and an automatic tool changing device are arranged at the bottom of the machine base, the cradle type rotary table device is used for achieving adjustment of two rotational freedom degrees of a workpiece in the machining process, and the automatic tool changing device is used for automatically changing tools on the main shaft device. According to the multi-axis linkage drilling and milling device, multi-axis linkage, high-speed and high-precision cutting, drilling, milling and other machining operations can be carried out on workpieces.

The invention provides a terahertz suspension core optical fiber, which belongs to the technical field of optical fibers and comprises an outer sleeve, a plurality of I-type dielectric tubes and a plurality of II-type dielectric tubes with the same number as the I-type dielectric tubes, wherein the plurality of I-type medium pipes are arranged in the outer sleeve, and each I-type medium pipe is tangent to the outer sleeve; the multiple II-type medium pipes are arranged in the outer sleeve, and one II-type medium pipe is arranged on the outer wall of each I-type medium pipe in a tangent mode; based on a modified total internal reflection principle, the dependence of a traditional suspension core optical fiber on a thin arm in structure is avoided; the simple optical fiber structure with all structural units being circular boundaries has more prominent advantages in optical fiber manufacturing. The hollow porous structure can ensure that most of energy in the mode is distributed in the air, so that the absorption loss is effectively reduced.

The invention discloses a multi-modal interactive digital exhibition hall system, and the system comprises a data collection module which collects the multi-modal data of the operation of a user on an exhibit in a virtual space through a multi-modal perception interface of MR equipment; the data processing module is used for preprocessing the acquired multi-modal data to standardize a data format; the instruction identification module is used for performing instruction identification on the preprocessed multi-modal data to obtain a corresponding operation instruction; and the execution module is used for executing corresponding operation according to the obtained operation instruction to update the object state and behavior in the virtual scene. According to the method, the user operation is perceived through the multi-mode perception interface, the exhibit content is quickly obtained and understood, external interference is reduced, the immersion and interactivity are improved, and the exhibition effect is improved.

The invention belongs to the technical field of state monitoring of power electronic devices, and discloses a SiC MOSFET junction temperature online monitoring circuit and method based on a turn-on delay integrator, and the circuit comprises a grid voltage detection circuit, a power source voltage detection circuit, a comparator circuit, a trigger circuit, an isolation circuit and a high-precision integral holding circuit. The gate voltage detection circuit measures the gate voltage of the scaled SiC MOSFET device and transmits the gate voltage to the comparator circuit; the power source electrode voltage detection circuit measures the scaled SiC MOSFET device power source electrode voltage VL in real time, filters the power source electrode voltage, carries out inverse proportion amplification on the power source electrode voltage through the inverting amplifier, and transmits the power source electrode voltage to the comparator circuit; the comparator circuit compares the grid voltage and the power source voltage with the reference voltage Vref1 of the comparator and the reference voltage Vref2 of the comparator respectively, outputs two pulse comparison signals V1 and V2 respectively, and then transmits the two pulse comparison output signals to the trigger circuit. According to the invention, when a plurality of SiC MOFET chips are connected in parallel, the highest junction temperature of the chips can be measured, which is more beneficial to online evaluation of the states of power electronic equipment and devices.

The invention discloses a power battery detection and alarm system, and the system comprises a power conversion module which is used for the conversion of an external input power supply; the photoelectric isolation module is used for photoelectric isolation of communication signals; the main control module is used for analyzing the operation input signal and outputting an operation result signal; the communication module is used for sending an alarm signal to external equipment; the detection module is used for detecting the gas concentration and temperature of the ternary lithium power battery; the alarm module is used for sending out a photoelectric alarm; and the alarm selection module comprises an operation panel, an alarm output mode selection circuit, an alarm trigger concentration selection circuit, an alarm trigger temperature selection circuit and an alarm detection duration selection circuit, and is used for setting an alarm mode and an alarm value. Alarm values and alarm modes can be set according to different environments, external interference can be effectively reduced through different settings, and the false alarm rate is reduced. And a fault self-checking function is set, so that a user can find device faults as soon as possible.

The invention discloses a multi-data fusion sediment measuring device which comprises a cylindrical underwater measuring device which is through in the middle and based on the light scattering principle and an automatic photoelectric system matched with the cylindrical underwater measuring device. The device is used for collecting backscatter, transmission and 45-degree, 90-degree and 135-degree scattered light intensities generated by the sand-containing water flow flowing through the middle through area of the light source. According to the system, the noise of the system is reduced through hardware model selection, hardware design and a software algorithm, the external interference is reduced, and accurate acquisition, measurement and data storage of the light intensity are realized. Besides, the multi-data fusion sediment measurement device can provide multi-feature data for forming a targeted machine learning model of a target drainage basin, realizes monitoring of the content of common sediment in the target drainage basin in different time and space in the drainage basin, has wide applicability and is suitable for popularization and application. And help is provided for the fields of water resource management, ecological system protection and the like of the device putting and using drainage basin.

The utility model relates to the technical field of shielding cases, and discloses an electric connector shielding case, which comprises a connector body, a first shielding case and a second shielding case are respectively and movably sleeved on the surface of the connector body, and a dismounting mechanism is arranged between the first shielding case and the second shielding case. According to the electric connector shielding case, when the shielding case is damaged and needs to be replaced, an operator can quickly separate the first shielding case from the second shielding case only by pushing the push rod without complicated tools and tedious operation steps, so that the replacement time is greatly shortened, and the practicability of the device is improved; according to the electric connector shielding case, the requirement for convenience of maintenance and replacement of the shielding case in an actual use scene can be better met, meanwhile, through the combination of the first shielding case and the second shielding case, the internal electric connector can be effectively protected, external interference is reduced, stable operation of the electric connector is maintained, and the basic function advantages of the electric connector shielding case are continued.

The utility model relates to the technical field of automobile suspension systems, in particular to an automobile suspension bearing friction torque detection device, which comprises a machine body, a servo motor, a speed reducer, a rotating shaft, a screw rod, a handle, a loading spring, an axial pressure sensor, a placing device and a measuring device. Radial and axial loads are borne through the suspension bearing, external interference is greatly reduced, and particularly, the influence of the friction torque of the measuring device on the friction torque detection of the suspension bearing is eliminated, so that the final detection value is real and reliable, the detection condition is close to the actual working condition, the detection value is real and reliable, and the practicability is high; the friction performance of the suspension bearing can be well evaluated, and an effective suspension bearing quality control means is provided for suspension bearing manufacturers; the design of simultaneous detection of the two sets of suspension bearings can eliminate the influence of the rotating shaft on the friction torque detection, and guarantees the detection precision of the friction torque.

The invention discloses a cooling device for efficient heat dissipation of a gearbox, and relates to the technical field of transmission devices. The radiator fan is rotatably mounted in the radiator main frame and is rigidly connected with the fan motor; one side of the cooling fan is provided with a cooling pipeline which is connected with a temperature control valve, and the other side of the cooling fan is provided with a cooling plate; an air inlet of the radiator is provided with an anti-flocculation net, and an air outlet of the radiator is provided with an air duct which is communicated with the cabin; the heat dissipation plates are of an integral aluminum magnesium alloy structure. The cooling pipeline is a double-layer high-elasticity fiber and steel wire winding rubber pipe; the temperature control valve is of a spring pressure type; the anti-flocculation net comprises an aluminum alloy frame and a diamond net; the surface of the radiator is coated with a graphene-containing coating; the ventilating duct and the exhaust hood are made of military silica gel coating glass fiber cloth; the cooling fan and the like form a penetrating type heat exchange core body; a reinforcing lifting lug is arranged on the main frame; the cooling capacity is guaranteed, the operation stability of the gearbox is improved, and the service life is prolonged.

The utility model discloses a kind of textile steel ring raw material automatic punch forming machine, including base, the top of the base is provided with roof rack, the base is connected with roof rack by multiple supports, the base and roof rack are commonly provided with punch forming equipment main body, the upper end of the base is provided with conveyor belt, the lower end of the roof rack is fixedly connected with hydraulic rod, the elongation end of the hydraulic rod is fixedly connected with device cylinder, the inner wall of the device cylinder is fixedly connected with detection device, the upper end of the device cylinder is provided with adjusting device, the side wall of the support at corresponding position is fixedly connected with fixed frame, the side wall of the fixed frame is fixedly connected with control panel. The utility model has the advantages that it is convenient for operators to operate and detect the damage of steel ring, and avoids damaging the equipment.

The invention discloses an anti-falling stand column split type oil drilling supporting frame, and relates to the technical field of drilling derricks, the anti-falling stand column split type oil drilling supporting frame comprises a drilling derrick, a platform and a climbing ladder, the platform is fixedly connected to the drilling derrick, the climbing ladder is fixed to the side face of the drilling derrick, and the anti-falling stand column split type oil drilling supporting frame further comprises a steel cable, a safety buckle, an anti-falling safety detection assembly and a safety processing assembly; according to the drilling derrick safety protection system, through the arrangement of the safety processing assembly, the improvement of the whole protection system is promoted, and the safety of workers under various complex working conditions can be effectively guaranteed; the mode that the safety buckle on the steel rope stops falling through cooperation of machines is different from the mode that the falling condition of workers is detected depending on electronic equipment and a sensor in the prior art, and triggering is conducted through the influence of centrifugal force on the balancing weight. And the problem that the electronic equipment is easily interfered in a complex industrial environment such as a drilling derrick is avoided.

The present invention discloses a ternary lithium power battery detection alarm device, including: a power conversion module for converting an external input power supply; a photoelectric isolation module for photoelectrically isolating communication signals; a main control module for analyzing operation input signals and outputting operation result signals; a communication module for sending alarm signals to external devices; a detection module for detecting the gas concentration and temperature of the ternary lithium power battery; an alarm module for sending a photoelectric alarm; an alarm selection module, including an operation panel, an alarm output mode selection circuit, an alarm trigger concentration selection circuit, an alarm trigger temperature selection circuit, and an alarm detection duration selection circuit, for setting alarm modes and alarm values. The alarm value and alarm mode can be set according to different environments, and different settings can effectively reduce external interference and reduce the false alarm rate. A fault self-check function is provided, so that users can find device failures early.

The application belongs to the field of CT internal temperature control, in particular to a CT internal temperature control and steam water replenishment test device, which comprises a base, a pedestal is installed on the top of the base, a soil sample mold main body is installed on the top of the pedestal, a PVC heat preservation film is detachably connected to the outside of the soil sample mold main body, a temperature control box is arranged on one side of the top of the base, and a bottom plate is installed on the bottom of the pedestal; the water source is filtered through the filter frame, the harmful substances in the water are adsorbed through the activated carbon in the installation box, the impurities in the water are prevented from affecting the quality of the subsequent supplemented steam, the filter frame can be repeatedly cleaned through the brush plate, the impurities above the filter frame are knocked and shaken off through the high-frequency knocking of the knocking rod, then the impurities fall into the storage box through the discharge port to complete the collection, the problem that the filtering effect is easily affected due to too much accumulated impurities after the filter frame is used for a long time is effectively avoided, manual cleaning is not needed frequently, and the labor burden of the workers is effectively reduced.

The utility model relates to the technical field of medical equipment, and particularly discloses an oral cavity CT medical vehicle which comprises a vehicle head and a compartment. The vehicle head is mounted in front of the compartment; a first compartment and a second compartment are arranged in the compartment, the first compartment and the second compartment are arranged side by side, and the first compartment is communicated with the second compartment through a movable door; the first compartment is close to the rear part of the carriage, and the second compartment is close to the front part of the carriage; an outlet is formed in the rear of the compartment; a center console is arranged in the first compartment, a vertical oral cavity CT instrument is arranged in the second compartment, and the vertical oral cavity CT instrument is controlled by the center console. According to the medical compartment, examination equipment and an operation area are integrated into a whole, so that the turnover time of a patient among different examination places is shortened, oral CT examination can be quickly completed, the patient can obtain a diagnosis result more quickly, follow-up treatment can be carried out in time, and illness state delay is avoided.

The invention relates to the technical field of PCBA (Printed Circuit Board Assembly) burning and testing, and discloses a method for improving the burning and testing efficiency of PCBA, which comprises the following steps of: firstly burning a program to the PCBA by a burner, and then sending an ICT (Information and Communication Technology) test starting signal to the PCBA; after receiving the ICT test starting signal, the PCBA starts to execute an ICT test program to carry out an ICT test, and sends an ICT test result to the burner; the burner judges whether the ICT test of the PCBA is passed or failed according to the test result; according to the method, in actual use, after the program is burnt through the burner, the burner sends the test starting signal to the PCBA to start the ICT test of the PCBA, so that an additional ICT test signal sending device is omitted, and the ICT test cost of the PCBA is reduced; secondly, the PCBA does not need to be connected with the ICT test signal transmitting equipment, so that a manual connection step is omitted, and the operation is simple and convenient; and finally, an ICT test signal is sent through the burning interface of the online burner, so that the external interference is effectively reduced, and the signal transmission stability is improved.

The utility model provides a track vibration isolation mat simulation detection device, including a plurality of elastic support components, lower basic simulation board, track board simulation board, vibration loading mechanism and vibration acceleration sensor, the vibration isolation mat sample of waiting for detecting is arranged between lower basic simulation board and track board simulation board, therefore can simulate actual vibration isolation mat floating plate track structure well, and the vibration isolation mat performance that detects obtains is very close to its performance in actual track, has very good reference value. Besides, through setting a plurality of elastic support components below lower basic simulation board, and setting vibration acceleration sensor on it, can take the vibration energy that vibration loading mechanism loads as input energy, take the elastic potential energy of elastic support component that vibration acceleration sensor detects as output energy, and evaluates the performance of vibration isolation mat based on input energy and output energy, compares with the traditional track lower basic vibration level difference method more intuitive and simple.

The invention provides a pair of intelligent glasses capable of reducing sound leakage, which comprises a glasses frame and glasses legs, the two sides of the glasses frame are respectively provided with one glasses leg, at least one glasses leg is internally provided with a bone vibrator module, each glasses leg is internally provided with a vibrator cavity, the vibrator cavity is internally provided with the bone vibrator module, and the bone vibrator module is arranged in the vibrator cavity. An air leakage hole is formed in the cavity wall of one side, facing the other glasses leg, of the vibrator cavity, one end, deviating from the other glasses leg, of the bone vibrator module is communicated with the air leakage hole, and the surface, facing the other glasses leg, of the bone vibrator module is close to the cavity wall of the vibrator cavity close to the other glasses leg; and the air leakage hole is arranged in a manner of deviating from the close area of the bone vibrator module and the cavity wall of the vibrator cavity. Through a bone conduction design scheme, external leakage sound is reduced; furthermore, air holes are formed in the periphery of the bone vibrator diaphragm, opposite-phase sound is conducted to the front face, positive-phase sound on the front face and positive-phase sound on the front face are mutually counteracted through the phase counteracting principle, and leaked sound is greatly reduced.

The invention provides a capacitive wireless charging portable gas detector which comprises a charging base, the charging base is matched with the portable gas detector, a power circuit, a control circuit and a first coupling electrode plate are arranged in the charging base, and the power circuit and the control circuit are both connected with the first coupling electrode plate. The control circuit generates a high-frequency PWM signal as a driving signal of the first coupling electrode plate; a second coupling electrode plate, a charging circuit and a battery are arranged in the portable gas detector, the second coupling electrode plate is matched with the first coupling electrode plate, the second coupling electrode plate and the first coupling electrode plate which are close to each other form a two-pole structure of a capacitor, the second coupling electrode plate induces to generate charges, and the charging circuit is connected with the battery. And the second coupling electrode plate is connected with the battery through the charging circuit. The coupling electrode plate is used for replacing an inductor, and no large inductor exists in the inductor; the coupling electrode plates in the portable gas detector are separated from each other and cannot form capacitance, so that the difficulty of intrinsic safety explosion-proof design of the whole detector is reduced, the equipment safety is improved, and the service life of a portable instrument is prolonged.

The utility model belongs to the technical field of motor vehicle tail gas detection, and particularly relates to a motor vehicle tail gas lightproof smoke intensity detection device which comprises a shell, a detection dark cavity is formed in the shell, a lightproof smoke intensity detection unit is fixedly connected to the shell, and the front end of the shell is fixedly connected with an air inlet set communicated with the detection dark cavity. The rear end of the shell is fixedly connected with a shading exhaust set communicated with the detection dark cavity, the air inlet set comprises a flexible cover fixedly connected to the front end of the shell, the flexible cover is made of a deformable material, a connecting piece is assembled at the front end of the flexible cover and is an elastic ring, and the shading exhaust set comprises a smoke exhaust barrel fixedly connected to the rear end of the shell. And a rectangular cavity communicated with the detection dark cavity is formed in the smoke discharging cylinder. According to the utility model, the tail gas discharged by the tail gas discharge pipe of the motor vehicle can be directly conveyed to the detection dark cavity in the shell for detection, so that the external interference in the process of carrying out light-proof smoke intensity detection on the tail gas is reduced, and the detection accuracy is improved.

The utility model discloses an OLED display with a built-in RGB color temperature adjusting module, and belongs to the technical field of displays. The RGB color temperature adjusting module comprises a color temperature adjusting controller and an RGB sensing module, and the RGB sensing module further comprises a color light sensor, an analog-to-digital converter, a control unit, an oscillator, a reference voltage providing circuit, an infrared transmitter, an infrared receiver and an infrared transmitter driving circuit. Meanwhile, external light is guided into the built-in RGB color temperature adjusting module through the bendable light guide strip. According to the utility model, automatic RGB color temperature adjustment of the built-in sensor is realized, the product integration level is improved, wire harnesses are reduced, and the sensor is prevented from being damaged due to long-term exposure to the outside.

According to the drilling rig for hydrogeological exploration, the upper portion of a detachable support is arranged to be in a stable right triangle shape, and a support hanging hole is formed in the position, close to the tip of a hole, of the detachable support; a gravity measuring device in the measuring assembly is installed on a hanging hole through a hook above the gravity measuring device, a wire spool capable of achieving sudden stop positioning is installed on a hook below the gravity measuring device through a hanging buckle on the wire spool, the upper end of a force bearing PE wire is connected to a rotary disc shaft of the wire spool, and the tail end of the force bearing PE wire is connected to a buoy body. The device has the functions that the device is simple in structure, convenient to operate and carry and simple in operation principle, the water level can be measured by controlling the wire spool capable of achieving sudden stop positioning, the traditional measurement difficulty is reduced, the force bearing PE wire is straightened through the sudden stop positioning device, and the measurement precision is improved; the device measures underground water by adopting a physical gravity principle, the measurement process is slightly interfered by the outside, and the measurement result is high in reliability.

The application belongs to the technical field of tunnel engineering detection, and discloses a tunnel displacement simulation device and a detection calibration method, which comprises multiple groups of tunnel simulation units, the multiple groups of tunnel simulation units are sequentially spliced, each group of tunnel simulation units comprises two groups of arches, a support steel frame and a plurality of groups of telescopic pipe piece assemblies; the two groups of arches are oppositely arranged, the support steel frame is in a semicircular arc support structure and is arranged between the two groups of arches; the plurality of groups of telescopic pipe piece assemblies are arranged on the support steel frame and are sequentially arranged along the arc surfaces of the two groups of arches, wherein the adjacent telescopic pipe piece assemblies are connected, and the plurality of groups of telescopic pipe piece assemblies can simultaneously expand and contract along the radial direction of the two groups of arches and are used for simulating the profile range between the maximum profile and the minimum profile of the tunnel. The application can realize the simulation of the dynamic continuous deformation of the tunnel, does not need manual comparison of the scale, reduces the error caused by manual operation and lays a structural foundation for high-precision calibration.

The invention discloses a pretreatment method of a nitrate nitrogen stable isotope sample, and belongs to the technical field of environmental science, agriculture and chemical analysis. The pretreatment method of the nitrate nitrogen stable isotope sample comprises the following steps: adding an excessive stannous chloride hydrochloric acid aqueous solution into a nitrate-containing water sample to reduce nitrate in the water sample into nitrite, and continuously adding excessive metal zinc to reduce the nitrite into N2O to obtain a nitrate nitrogen stable isotope sample to be detected. The pretreatment method of the nitrate nitrogen stable isotope sample provided by the invention is efficient, simple, convenient and accurate. And determining the nitrogen isotope ratio of the treated N2O by using a stable isotope ratio mass spectrometer which only responds to the N2O, and deducing the composition of the nitrogen isotope in the nitrate sample.

This utility model discloses a double-layer piezoelectric sound acquisition device for pipeline leak detection, comprising an outer cylinder, an inner cylinder, an adjustment mechanism, a double piezoelectric structure, and a acquisition body. The acquisition body is disposed inside the outer cylinder. The bottom side of the outer cylinder is open, and a receiving cavity is formed inside the outer cylinder. The inner cylinder and the adjustment mechanism are both disposed within the receiving cavity. The adjustment mechanism is located on the side of the inner cylinder away from the open, and the adjustment mechanism is driven and connected to the inner cylinder. A detection cavity is formed inside the inner cylinder, and a acquisition port communicating with the detection cavity is opened on the side of the inner cylinder away from the adjustment mechanism. The double piezoelectric structure is disposed on the side of the receiving cavity away from the acquisition port, and the double piezoelectric structure is electrically connected to the acquisition body. The adjustment mechanism is used to drive the inner cylinder to move towards the open, so that the acquisition port of the inner cylinder abuts against the ground near the open. In the technical solution proposed by this utility model, the adjustment mechanism drives the inner cylinder to abut against the ground through the open, ensuring that the acquisition port of the inner cylinder is always in contact with the ground when acquiring audio, thus guaranteeing accurate acquisition of sound wave data.

The invention discloses an audio isolation device of a surveillance camera, an audio isolation circuit of the surveillance camera and a use method of the audio isolation device, and the audio isolation device comprises an audio input part, the audio isolation circuit and an audio output part, a primary coil and a secondary coil of each isolation transformer are respectively connected with an input interface of the audio input part and an output interface of the audio output part through signal lines. The isolation transformer of the audio isolation circuit can isolate an audio input signal from an audio output signal, thereby avoiding signal interference and loss.

The invention relates to a device and a method for measuring a friction coefficient of powder for additive manufacturing, in particular to measurement of a powder-powder substrate friction coefficient and measurement of a powder-substrate friction coefficient. The device comprises a shell, a funnel, an electric control valve, a laser emitting device, a laser receiving device, a powder scraping device, a powder laying device, a mechanical claw, a telescopic arm, a tension meter, an electric control translation table, a measuring platform and a powder collecting barrel. According to the invention, the components such as the electric control valve, the laser emitting and receiving device and the powder scraping device are adopted to measure the repose angle of the powder to be measured, so that automatic measurement of the powder-powder friction coefficient is realized; by controlling the mechanical claw to place the substrate, the powder laying device to lay the powder bed and utilizing the tension meter to measure the friction force, automatic measurement of the powder-substrate friction coefficient is realized, so that manual intervention is reduced, the measurement precision is improved, the two measuring devices are integrated into a whole through the hydraulic device, and the device is simplified.

The utility model discloses a mosquito incense smoke generating device for inhalation toxicity test belongs to test equipment technical field, including upper cylinder, with the upper cylinder detachable splicing lower cylinder and the vertical stack placement in the upper cylinder with lower cylinder's several mosquito incense tray, the lower cylinder is equipped with air supply mechanism, the air supply mechanism includes: fan, the fan is fixedly connected with the power source output end of lower cylinder bottom installation, and the power source is used for driving the fan rotation air -blowing, this mosquito incense smoke generating device for inhalation toxicity test makes air be rotated dispersion in the ascending process through the linkage of fan and rotary conveying structure, and each layer mosquito incense tray obtains equal flow, and the combustion speed tends to be consistent, and the smoke concentration fluctuation reduces, and the upper cylinder is locked with the lower cylinder through the snap -on, and the transparent observation window provides real -time field of vision, and the plugging structure can stepless regulation air intake in the midway of test, and even cut off the air completely and make mosquito incense extinguish.

This invention provides a six-degree-of-freedom simulator for low-gravity landing cushioning, comprising a landing leg assembly, a frame, an IMU, an air-bearing ball bearing, and a connecting column forming an attitude control platform and a translational platform. Four landing leg assemblies are evenly arranged on the frame. An air-bearing ball bearing is located in the middle of the frame, with an IMU mounted above it. The lower part of the air-bearing ball bearing is connected to the translational platform via the connecting column. A control component is also provided on the frame, and the landing leg assemblies and IMU are connected to the control component. The planar air cushion of the translational platform is used for support on a simulated tilting platform, and the landing leg assemblies act on the simulated landing surface. This invention can record attitude changes and the force and torque values ​​of the landing legs during landing, and compare the experimental data with simulation results from a full-physics simulation test.