43results about How to "Compliant with miniaturization" patented technology

The invention discloses a gate driving circuit which comprises a plurality of gate driving sub-circuits, wherein each gate driving sub-circuit comprises an upward-pull switch element, a downward-pull switch element and a latch; and the latch is used for respectively carrying out first-stage upward pull and second-stage upward pull on voltage output from the output end of the latch through a first upward pull signal and a second upward pull signal which are respectively input from a first upward pull signal input end and a second upward pull signal end so as to improve a control signal output from the latch to a first control end of the upward-pull switch element. According to the invention, the latches can output very high voltage to the upward-pull switch elements in a time period in which the gate driving sub-circuits output gate voltage, and then the output capability of the upward-pull switch element is improved, so that the sizes of the upward-pull switch elements can be further decreased on the premise of outputting enough gate voltage, therefore, the gate driving circuit is specifically suitable for meeting the design requirements of small-panel liquid crystal display devices.

The invention discloses a high-strength, high-elasticity and high-conductivity copper alloy. The copper alloy comprises the following chemical components: 0.005-2.0 wt% of Cr, 0.001-0.5 wt% of Zr, 2.5-5.0 wt% of Ni, 0.1-1.0 wt% of Co, 0.4-1.6 wt% of Si, 0.01-0.2 wt% of Mg, and the balance Cu. The high-strength, high-elasticity and high-conductivity copper alloy uses copper, chromium, zirconium, nickel, cobalt, silicon, magnesium, titanium, lanthanum and cerium as main components, and has the yield strength above 800 MPa, the elastic modulus above 130 GPa and the electric conductivity above 50% IACS; the comprehensive performance and the environmentally friendly performance of the copper alloy are both superior to that of an existing common material for producing electronic connectors and lead frames; and the copper alloy is an ideal material for producing the electronic connectors and the lead frames. The invention provides the copper alloy with high yield strength, high elastic modulus and excellent electric conductivity for the electronic connectors and the lead frames needed by miniaturization, lightness and high integration of electronic and communication equipment.

The invention provides a gas sensor based on TMDCs-SFOI heterojunction and a preparation method thereof. The gas sensor takes two-dimensional transition metal sulfide TMDCs as a gas sensitive layer and a semiconductor film on an insulator SFOI as a conductive channel; after TMDCs are contacted with SFOI, due to the Fermi level difference, electrons are transferred from the high Fermi level side tothe low Fermi level side, thereby generating space charge regions on both sides of the heterojunction and forming a p-n junction; when gas molecules to be detected are adsorbed on the surface of theTMDCs and charge transfer occurs between the gas molecules to be detected and the TMDCs, the concentration of carriers in the TMDCs is changed, a p-n junction potential barrier is changed, the width of the space charge region in the SFOI is changed, and finally the resistance of the conductive channel is changed, so that the gas to be detected is sensed. According to the gas sensor based on TMDCs-SFOI heterojunction and the preparation method thereof, the gas sensitive layer is separated from the conductive channel, meanwhile, the high sensitivity of the two-dimensional TMDCs to adsorbed gas molecules is utilized, and a gas detector is beneficial to achieving high sensitivity and high reliability and can be directly integrated on a semiconductor chip together with the mature traditional semiconductor device process.

The invention discloses a MEMS optical spectrum gas sensor, which utilizes optical spectrum to realize qualitative and quantitative analysis of object gas. The sensor obtains the concentration of object gas via the adsorbed amount of infrared light emitted by the discharge of the target gas in the object, while the adsorbed amount is determined by the light intensity difference between the infrared light of a reference chamber and a measurement chamber. The sensor is mainly composed of a radio frequency luminous tube, a target gas characteristic adsorption reference chamber (a main reference chamber), a target gas characteristic adsorption measurement chamber (a main measurement chamber), a non-characteristic adsorption measurement (an auxiliary measurement chamber) and a non-characteristic adsorption reference chamber (an auxiliary reference chamber). The main reference chamber and the main measurement chamber are used for detecting the concentration of target gas. The auxiliary reference chamber and the auxiliary measurement chamber are used for determining if the infrared adsorption in the main measurement chamber is caused by interference gas. The invention can resolve the defects of prior sensors such as low selectivity, low interference resistance and short service life, having low cost and wide application.

The invention relates to a gas insulated switchgear (GIS) combined type voltage transformer. The GIS combined type voltage transformer comprises a pedestal, a shell, a device body, a basin type insulator, a basin type insulator conductor and an electric conductor, wherein the shell is fixed on the pedestal; the basin type insulator is arranged on the top of the shell; the basin type insulator conductor is arranged in the center of the insulator and extends out of the shell; the device body is fixed on the pedestal at the bottom of the shell; the basin type insulator conductor is connected with the device body through the electric conductor; the electric conductor is an elastic electric conductor; the top end of the electric conductor is fixedly connected with the basin type insulator conductor; and the tail end of the electric conductor is moveably connected with the device body, so that on and off of the basin type insulator conductor and the device body are realized. An insulating piece extending from the end part operates the elastic electric conductor to act to contact or not contact with the device body, so that on and off of the voltage transformer are realized. The GIS combined type voltage transformer has a built-in isolating function, is not externally connected with a disconnecting device, is convenient to use and is line with the development direction of miniaturization and light weight of the GIS equipment.

The invention reveals an image capturing optical system, an image capturing device, and an electronic device. The system sequentially comprises a first lens, a second lens, a third lens, a fourth lens and a fifth lens from the object space to the image space. The first lens has the positive refraction power, and the object space surface of the first lens is a convex surface. The second lens has the positive refraction power, wherein the object space surface of the second lens is a convex surface, and the image space surface of the second lens is a concave surface. The third lens has the negative refraction power, and the image space surface of the third lens is a concave surface. The fourth lens has the positive refraction power. The fifth lens has the negative refraction power, and the image space surface of the fifth lens is a concave surface. Moreover, an off-axis part of the image space surface of the fifth lens comprises at least one convex surface, and the object space and image space surfaces of the fifth lens are aspheric surfaces. When a specific condition is met, the stabilization of the imaging quality and assembly of the system is facilitated. The invention also discloses the image capturing device with the system, and the electronic device with the image capturing device.

The invention discloses a multi-frequency common base station antenna comprising a reflection plate, a low-frequency radiating unit and a high-frequency radiating unit which are arranged on the reflection plate and a dual-frequency combiner which is connected with the high-frequency radiating unit. The dual-frequency combiner is connected with the high-frequency oscillators in the two arrays of the target high-frequency radiating unit in the high-frequency radiating unit in a one-to-one way to multiplex the high-frequency oscillators. The feeding end of the dual-frequency combiner is connectedwith the feeder network corresponding to the two frequency bands of the target high-frequency radiating unit. Therefore, the high-frequency oscillators are multiplexed by the dual-frequency combinerso as to realize a wider working frequency range without increasing the size of the reflection plate, and thus the volume and the size of the antenna are small and the antenna meets the requirements of miniaturization and multi-frequency of the antenna.

The present invention discloses a multi-protocol interface data collection device based on a SpaceFibre interface, belonging to the field of space technology application. The device comprises an FPGAmodule, a SpaceFibre interface, a Serdes serial-parallel conversion module, a 1394b physical layer module, a CAN control receiving and dispatching module, a RS232 level conversion module, a 1394b interface, a CAN interface and a RS232 interface. The FPGA module comprises a data collection module, a FIFO cache module, a protocol conversion module and a SpaceFibre IP node module. The present invention further provides a multi-protocol interface data collection method based on a SpaceFibre interface which achieves data compatibility among the external 1394b interface device, the CAN interface device and the external RS232 interface device and the SpaceFibre network or a SpaceFibre device to enrich the application ranges of the external 1394b interface device, the external CAN interface device, the external RS232 interface device and the SpaceFibre network or the SpaceFibre device and meet the development trends of the miniaturization and the intelligence of a current space electronic communication system.

The invention discloses a CMOS / MEMS compatible spectroscopic gas sensor which performs qualitative and quantitative analysis by using near-infrared transmission spectra of gases to be measured. The sensor consists of an infrared light source, a photon crystal dispersing prism, an infrared photoelectric detection array and the like, judges the type of gases by adopting the reference structure and analyzing the position of the characteristic line and determines concentration of gases by corresponding absorbance. The invention overcomes the deficiencies that the traditional MEMS gas sensor has complex processes and short service life, has the high sensitivity detectivity and can be manufactured compatible with CMOS processes. The CMOS / MEMS compatible spectroscopic gas sensor can be produced in large scale with reduced cost and analyze the gas concentration gradient through the integrated array.

The invention discloses a sensitive probe for a non-dispersed infrared gas sensor and a non-dispersed infrared gas sensor detection system. The sensitive probe comprises an infrared light source, an optical air chamber, an infrared sheet array and an infrared detector array; the optical air chamber is provided with an air inlet and an air outlet respectively and is communicated with a gas environment to be measured through the air inlet and the air outlet; the infrared light source is arranged at the head end of the optical air chamber; the infrared sheet array and the infrared detector arrayare sequentially arranged at the tail part of the optical air chamber; the infrared sheet array comprises a plurality of detection light filters and a contrast light filter; the infrared detector array comprises a plurality of infrared detectors which correspond to the detection light filters and the contrast filter one by one; and after the infrared light source emits broad spectrum infrared light, the broad spectrum infrared light sequentially passes through the optical air chamber and the infrared sheet array and then exits into the infrared detector array. The sensitive probe provided by the invention, by using the infrared sheet array and the infrared detector array, can simultaneously measure various gas concentrations.

The invention relates to a reserve type lithium battery which comprises a shell, an electric core and electrolyte, wherein the electric core and the electrolyte are positioned in the shell; and the reserve type lithium battery also comprises a valve which is fixed in the shell and used for isolating the electric core from the electrolyte. The electrolyte breaks through the valve and soaks the electric core at preset acceleration. The reserve type lithium battery of the invention has simple and compact structure and simple and easy manufacture process. The valve is directly fixed on the shell and occupies less internal space of the battery, and battery capacity is basically free from influence; and the invention is convenient to improve battery design capacity and shorten battery integral volume and meets the miniaturized and light-weight development tendency of the traditional battery. The battery can be in a shape of column, square, coin, button, and the like, and the reserve type lithium battery can be used as a single fuse and various ammunition fuses.

The invention provides a device for online detection of oil product density and viscosity, The device comprises an electrode sealing casing, a piezoelectric plate arranged in the electrode sealing casing, a detection unit and a processing unit, wherein the detection unit and the processing unit are arranged on two opposite end faces outside the electrode sealing casing. The detection unit comprises a piezoelectric vibrator, and the processing unit comprises a processor, a signal stimulation module and a signal collection module. The piezoelectric plate is electrically connected with the processing unit through a first electrode lead, and the electrode sealing casing is provided with a through hole for the first electrode lead to penetrate. The signal stimulation module stimulates the piezoelectric plate to vibrate. The processor calculates the oil product density and viscosity according to vibration frequency and vibration impedance of the piezoelectric vibrator collected by the signal collection module in an oil product. The device detects density and viscosity indexes of the oil product simultaneously, the problems of poor timeliness in off-line measurement and laboratory measurement are solved, and outburst faults can be timely captured to avoid or reduce a loss.

The invention relates to an HMSIW (half mode substrate integrated waveguide) dual-mode dual-band filter capable of independently controlling bandwidths. The dual-band filter is formed by using a double-layer HMSIW cavity staggered folding manner and a vertical coupling manner; TE101 and TE201 modes of HMSIW cavities work simultaneously, the TE101 modes of the two cavities constitute a first pass band and the TE201 modes of the two cavities constitute a second pass band; a middle layer comprises 6 coupling grooves and the coupling intensity of the two pass bands can be controlled by changing the size of the coupling grooves; input and output feeders are loaded on an upper metal surface and a lower metal surface respectively. The requirement of a modern multi-standard radio frequency systemfor miniaturization is met by introducing HMSIW dual mode work and using a double layer plate overlaying manner, and the problems of large size and complex design of traditional dual-band filters aresolved.

The invention provides a centrifugal pump impeller sealing structure. The centrifugal pump impeller sealing structure comprises a centrifugal impeller front lug boss sealing gear, a centrifugal impeller back lug boss sealing gear and two graphite sealing rings, the centrifugal impeller front lug boss sealing gear and the centrifugal impeller back lug boss sealing gear are integrally machined on a centrifugal pump impeller base body matrix respectively; the two graphite sealing rings correspond to the centrifugal impeller front lug boss sealing gear and the centrifugal impeller back lug boss sealing gear respectively and are inlaid onto a pump shell. The centrifugal pump impeller sealing structure is applicable to a small-flow and high-rotation speed centrifugal pump; the centrifugal pump impeller sealing structure can achieve effective control of leakage by selecting a small sealing gap, does not increase the power loss and effectively improves the pump efficiency; compared with the conventional floating ring seal, the centrifugal pump impeller sealing structure has the advantage that in the starting process and in the stable working process, leaking cooling flow is relatively fixed, so that the working stability of the pump is effectively improved; besides, the centrifugal pump impeller sealing structure is compact, simple and reliable, and is especially applicable to design requirements of a small-sized light-weighted pump.

The invention discloses a micro-nano satellite multi-assembly thermal vacuum batched test device. The micro-nano satellite multi-assembly thermal vacuum batched test device comprises guide rails, a heating unit and a heat insulating plate in vacuum tank heat sink; the heating unit comprises an infrared cage, a support and a mounting plate; and the micro-nano satellite multiassemblies to be testedare arranged on the mounting plate, and geometric envelope of the infrared cage completely covers the assemblies to be tested, the support and the mounting plate. The invention further discloses a corresponding test method. According to the micro-nano satellite multi-assembly thermal vacuum batched test device and the test method, the test efficiency can be significantly improved, and the test cost is reduced.

The present invention discloses a method for Mars acquisition by using SINS / image matching combination navigation. According to the method, SINS is adopted to provide a current position and an attitude of a detector; a SINS / image matching combination navigation model is established, an image matching algorithm is adopted to carry out auxiliary correction on an output result of SINS, and a current exact position and a current exact attitude of the detector are provided; position change and attitude change of the detector can be determined by extracting and tracking an outline edge of a target Mars; an optimal combination filtering algorithm is adopted to provide state information formed by fusion of multiple information of the detector, wherein navigation positioning is performed on the detector; and finally an entering-orbit state of the detector is determined to form a control command so as to achieve independent and accurate acquisition of the detector. With the method of the present invention, development trends of miniaturization, high integration, and multi-function of the detector are met, the method of the present invention provides more excellent real time performance than remote control and remote sensing on the ground, signal blind areas on the back surface of the Mars are avoided, and independent and intelligent target acquisition and determination can be achieved.

The invention discloses a modularly spliced integrated network array antenna, which is formed by splicing and combining a plurality of independent array modules, wherein each array module comprises an antenna unit, an integrated network substrate and a radio frequency connector, each integrated network substrate is provided with a feed network circuit and a calibration network circuit, the antenna units are installed on the upper surface of the integrated network substrates, and the radio frequency connectors are installed on the lower surfaces of the integrated network substrates. The integrated network array antenna is formed by freely splicing and combining the plurality of array modules, the antenna array modular design and splicing reduce the antenna development difficulty and cost, external field construction and application are facilitated, the networking speed can be effectively improved, and rapid networking is realized; and by adopting the structure design, the antenna structure is simplified, the profile and the weight of the antenna are reduced, the design cost of the antenna is greatly reduced under the condition that the function and the index of the antenna are not influenced, and the requirement of efficient and large-scale networking of a 5G communication system is met.

The invention discloses high-dimensional stability Sn-Ag-Cu solder suitable for electronic packaging. The main component metal elements of the solder include Sn, Ag, Cu and Be. According to the solder, the excellent melting property, the excellent welding performance and the excellent mechanical property of Sn-Ag-Cu solder alloy are maintained, the elasticity modulus of a welding connector can also be remarkably improved, a welding spot is made to have high toughness, the dimensional stability is good, and the solder is particularly suitable for ultra-small interval electronic packaging. The electric conductivity and heat conductivity of the prepared welding spot can also be improved, so that the welding spot still has the excellent comprehensive service performance while bearing electric, thermal and mechanical loads and accords with the miniaturization, precision and high-performance development tendency of modern electronic components, the using reliability of the electronic products is improved, and the service life of the electronic products is prolonged. Furthermore, through one or more of Al, Ni and V, the high-temperature oxidation resistance, wettability, fluidity and high-temperature chemical stability of the solder can be further improved, the solder alloy is refined, and the mechanical property of the welding spot is improved.

The invention discloses an anti-static and lightning-prevention dual protection circuit, which comprises differential signal interfaces at two ends, a first differential signal wire and a second differential signal wire, wherein the first differential signal wire and the second differential signal wire are used for connecting the differential signal interfaces, at least one gas discharge tube in mutual serial connection is arranged between the first differential signal wire and the second differential signal wire and is connected with the differential signal interfaces in parallel, the first differential signal wire and the second differential signal wire are both provided with resistors, and a transient voltage suppressor in parallel connection with the differential signal interfaces is arranged between the first differential signal wire and the second differential signal wire. The anti-static and lightning-prevention dual protection circuit disclosed by the invention can achieve the dual protection effect, the gas discharge tube is used as first-stage protection, the transient voltage suppressor is used as second-stage protection, so that a protection coefficient is increased, and the damages or destructions caused by static or lightning are avoided effectively.

The invention provides an optical lens group for mobile focusing. From the object side to the image side of the optical lens group for moving focusing, the optical lens group sequentially comprises: a first lens group having positive focal power, the first lens group comprising at least one lens having focal power; the second lens group comprises two lenses with focal power; when the object to be shot moves from infinity to macro relative to the optical lens group for mobile focusing or when the object to be shot moves from macro to infinity relative to the optical lens group for mobile focusing, the second lens group moves on the optical axis to realize focusing. When the optical lens group is located at the close-shooting position and the optical lens group is located at the far-shooting position, the interval difference quantity T of the first lens group and the second lens group on the optical axis and the distance TTL from the object side surface of the first lens of the optical lens group to the imaging surface of the optical lens group on the optical axis meet the following condition: T / TTLlt; and 0.25%. According to the invention, the problem of high power consumption of an optical lens group in the prior art is solved.

The invention discloses a pressure regulating valve. The pressure regulating valve comprises a valve body and a valve core, wherein the valve core can move relative to the axial direction of the valve body; one end of the valve core is matched with a valve port so as to control the opening or closing of an inlet and an outlet of the valve body; the other end of the valve core abuts against the surface of one side of a membrane which is fixedly arranged on the valve body to form the opening setting pressure of the valve core through the membrane; the valve body which is arranged on the other side of the membrane comprises a closed accommodating chamber; a compressed fluid medium is injected into the closed accommodating chamber and the opening setting pressure is established through the compressed fluid medium. According to the pressure regulating valve, the good stability and reliability of the pressure regulation can be obtained through structural optimization and the manufacturing cost of the pressure regulating valve can be reduced. The invention also provides a refrigeration system on the basis of the pressure regulating valve, wherein the pressure regulating valve is applied to the refrigeration system.

The invention discloses an asymmetric centrifugal fan, and belongs to the field of centrifugal fans. The asymmetric centrifugal fan comprises blades, a round partition plate, a first fan hub arranged on a first side of the round partition plate, and a second fan hub arranged on a second side of the round partition plate. The blades comprise a first blade set and a second blade set. The first blade set is arranged between the first fan hub and the round partition plate. The second blade set is arranged between the second fan hub and the round partition plate. A shaft sleeve is arranged in the middle of the round partition plate, the distance between the first fan hub and the round partition plate is less than the distance between the second fan hub and the round partition plate, and the ratio between the distance from the first fan hub to the round partition plate and the distance from the first fan hub to the second fan hub is 0.45. An asymmetric structure is adopted in the asymmetric centrifugal fan, and therefore the asymmetric centrifugal fan is smooth in air intake, strong in air supplying capacity, large in air inlet space, and sufficient in air flow.

The invention discloses a CMOS / MEMS compatible spectroscopic gas sensor which performs qualitative and quantitative analysis by using near-infrared transmission spectra of gases to be measured. The sensor consists of an infrared light source, a photon crystal dispersing prism, an infrared photoelectric detection array and the like, judges the type of gases by adopting the reference structure and analyzing the position of the characteristic line and determines concentration of gases by corresponding absorbance. The invention overcomes the deficiencies that the traditional MEMS gas sensor has complex processes and short service life, has the high sensitivity detectivity and can be manufactured compatible with CMOS processes. The CMOS / MEMS compatible spectroscopic gas sensor can be produced in large scale with reduced cost and analyze the gas concentration gradient through the integrated array.

The invention discloses high-dimensional stability Sn-Ag-Cu solder suitable for electronic packaging. The main component metal elements of the solder include Sn, Ag, Cu and Be. According to the solder, the excellent melting property, the excellent welding performance and the excellent mechanical property of Sn-Ag-Cu solder alloy are maintained, the elasticity modulus of a welding connector can also be remarkably improved, a welding spot is made to have high toughness, the dimensional stability is good, and the solder is particularly suitable for ultra-small interval electronic packaging. The electric conductivity and heat conductivity of the prepared welding spot can also be improved, so that the welding spot still has the excellent comprehensive service performance while bearing electric, thermal and mechanical loads and accords with the miniaturization, precision and high-performance development tendency of modern electronic components, the using reliability of the electronic products is improved, and the service life of the electronic products is prolonged. Furthermore, through one or more of Al, Ni and V, the high-temperature oxidation resistance, wettability, fluidity and high-temperature chemical stability of the solder can be further improved, the solder alloy is refined, and the mechanical property of the welding spot is improved.

The invention discloses a micro-nano-satellite multi-component thermal vacuum batch test device, which includes a guide rail in a heat sink of a vacuum tank, a heating unit, and a heat insulation board; the heating unit includes an infrared cage, a bracket, a mounting plate, and a micro-nano satellite to be tested Multiple components are arranged on the mounting plate and the geometric envelope of the infrared cage completely covers the components to be tested, the bracket and the mounting plate. The invention also discloses a corresponding test method. The invention can significantly improve test efficiency and reduce test cost.

The invention reveals an image capturing optical system, an image capturing device, and an electronic device. The system sequentially comprises a first lens, a second lens, a third lens, a fourth lens and a fifth lens from the object space to the image space. The first lens has the positive refraction power, and the object space surface of the first lens is a convex surface. The second lens has the positive refraction power, wherein the object space surface of the second lens is a convex surface, and the image space surface of the second lens is a concave surface. The third lens has the negative refraction power, and the image space surface of the third lens is a concave surface. The fourth lens has the positive refraction power. The fifth lens has the negative refraction power, and the image space surface of the fifth lens is a concave surface. Moreover, an off-axis part of the image space surface of the fifth lens comprises at least one convex surface, and the object space and image space surfaces of the fifth lens are aspheric surfaces. When a specific condition is met, the stabilization of the imaging quality and assembly of the system is facilitated. The invention also discloses the image capturing device with the system, and the electronic device with the image capturing device.

The invention discloses an intelligent vacuum contactor. The intelligent vacuum contactor comprises a frame, and a vacuum contactor, an electric steering mechanism and a comprehensive protector, which are arranged on the frame, wherein the vacuum contactor comprises three vacuum switch tubes and a permanent magnet type operation mechanism, the permanent magnet type operation mechanism drives moving contacts in the three vacuum switch tubes to perform switching motions, each static contact in each vacuum switch tube is stretched out of the wall of the frame, and a portion of each static contact, stretched out of the wall of the frame, is directly used as a plug-in type power side power connection pillar. The intelligent vacuum contactor directly integrates each static contacts in each vacuum switch tube with each power side power connection pillar, can reduce the self weight, is convenient to install, and simultaneously can greatly compress volume space, and conforms to development demands of miniaturization and intelligence of underground mining equipment.

The invention provides a standardized low-frequency wired signal conditioning device. The device comprises a standardized signal conditioning box and a satellite-to-ground contact adapter box. The standardized signal conditioning box is served as a core of the standardized large-and-medium-sized satellite low-frequency wired signal conditioning device and completes a satellite wired download low-frequency signal and an upper satellite wired control signal of a satellite low-frequency signal acquisition and control terminal and other functions. In the invention, general and special-purpose portions of the signal conditioning device can be thoroughly separated and universality of the conditioning device is increased maximumly so that an only difference of the different satellite low-frequency wired signal conditioning devices is the satellite-to-ground signal contact adapter box; and all satellite low-frequency wired signal conditioning modules are integrated into one 2U standardization signal conditioning box, the size is small and an integrated level is high.

The invention discloses an array waveguide light-splitting based infrared spectrum MEMS (Micro-electromechanical System) gas sensitive transducer. The kinds and the concentrations of gases can be determined by using an infrared transmission spectrum of the gases. The sensor comprises an infrared heat light source (1) integrated on a silicon substrate, a photonic crystal waveguide array light splitter (2), a measuring gas chamber (3), an infrared detection array (4) of the measuring gas chamber, a reference ratio gas chamber (5) and an infrared detection array (6) of the reference ratio gas chamber. The invention solves the problems that the traditional MEMS gas sensitive transducer requires a complicated process for fabrication and has a limited service life, has high-sensitivity detectivity, is compatible with the CMOS (Complementary Metal-Oxide-Semiconductor Transistor) process in the manufacture, can be produced in batch and can detect the concentration gradient of the gases in a unit array way.

The invention provides a CD4069UB-based back-up power source inverter, which adopts the classical design of implementing the inverter through one time-inversion. First, a square wave generating circuit is formed by a CD4069UB peripheral circuit. Then, a square wave signal is divided into two paths, wherein a signal reversal phase is formed by one path of square wave signal passing through a phase inverter with the other path of square wave signal. Next, the two paths of inverted square wave signals pass through two basic common-emitter amplification circuits which are formed by two triodes, and the voltage of the square wave signals is amplified; and the inverted square wave signals pass through a full-bridge inverter circuit, and an alternating voltage which is generated by alternating on-off of an enhanced MOSFET field-effect transistor and then boosted by a power frequency transformer achieves inversion of the full-bridge inverter circuit. The CD4069UB-based back-up power source inverter can be used for loads.