4236results about How to "Guarantee stability" patented technology

The invention relates to a multitask concurrent executive system and a method for hybrid network service. The system comprises a client side, a load-balancing server, a signalling / media control server and an application server cluster. The running method thereof is as follows: after the client side receives a service request, the load-balancing server selects an optimum application server and transmits the service request to a service bus thereof. After an admission control module of the application server carries out admission control on the request, the service bus transmits the request to a dynamic flow execution engine, the dynamic flow execution engine starts a service flow corresponding to the request to analyze and process, and the service bus calls a corresponding service capability component in a low deferred event service engine and interacts with the signalling / media control server through the resource adapter so as to call the service resource of the latter; and a processing result is returned to the client side according to a reverse process. The multitask concurrent executive system supports the supply of hybrid network service over a telecommunication network and the internet and the multitask concurrent on a heterogeneous network and terminals.

The invention discloses a high-availability framework system for single-point isomerous data storage. The system comprises a client library ti-a59-client, an isomerous data conversion and storage service module ti-a59-builder, a data write operation log service module ti-a59-log-srv, a data queue framework ti-queue, a message queue service module MQServer, a single-point deployment isomerous data storage server Single Server DataStore, a write request log service data storage module Write Log DataStore and a write request control log data storage module Ctrl Log DataStore. Furthermore, the invention further discloses an implementation method of the system. The system has higher cross-platform deployment capacity besides the characteristic of high-availability supporting of single-point deployment storage including an existing framework, and important characteristics of supporting more data storage types, supporting data synchronization between isomerous data and supporting data backup and data recovery functions during failure of a node.

The invention discloses an active gradient temperature field regulating and controlling system and a control method thereof. The system is composed of a temperature field monitoring system, a heating system and a control system, wherein the temperature field monitoring system is used for measuring temperature field information on an XOY plane and at the periphery of a forming region and feeding the temperature field information back to the control system after quantitatively processing the temperature field information; and the heating system is used for independently regulating subregions of a temperature field at the bottom and periphery of a forming tank in real time according to a command of the control system so as to keep the temperature field of the whole machining region constant in the machining process, keep a processed region and an unprocessed region in a reasonable temperature gradient and avoid structural member warping, deforming and cracking caused by thermal stresses. The system can also be used for directly carrying out stress relief annealing on a formed structural member or directly carrying out stress relief on the formed structural member while machining, so that the problems of warping, deforming, cracking and the like easily caused in the forming process are effectively solved, not only is the time shortened, but also energy sources are saved, meanwhile, the holding time of equipment can be effectively shortened, and the utilization ratio of the equipment can be increased.

The invention relates to an ankle prosthesis (1) comprising a talar implant (2) designed to be implanted in or on the talus (3), a tibial implant (4) designed to be implanted in or on the tibia (5), and an intermediate implant (6) designed to be interposed between the tibial implant and the talar implant, said intermediate implant (6) being designed to be mounted to move relative to said talar implant (2) at a contact interface (7) in order to allow the ankle to move, said ankle prosthesis (1) being characterized in that it is provided with configurable coupling means (10) designed to enable the intermediate implant (6) to be arranged relative to the tibial implant (4) in a specific configuration chosen from among a plurality of possible configurations.

The embodiment of the invention relates to the liquid crystal display technology field, especially to a circuit of gate drive on array (GOA), a shift register and a display screen. The GOA circuit comprises a first thin film transistor (TFT), a second TFT, a third TFT, a fourth TFT, a capacitor and a drop-down module. The drop-down module, which is connected between a first clock signal input terminal, a second clock signal input terminal, a first node and an output terminal and is connected with a low level signal terminal, is used for maintaining the first node and the output terminal to be at a low level within non-working time of the GOA circuit of this row. According to the invention, functions of an input terminal and a reset terminal in the GOA circuit are designed to be symmetrical, so that the GOA circuit can realize bilateral scanning without changing charging and discharging characteristics of a node; and thus reliability and stability of the circuit are ensured.

The invention discloses a database masking system based on big data. The system comprises a system management module for constructing a role for the database masking system, and performing function authorization and management on the role, a data source management module for providing data source management for the database masking system, a sensitive data discovery module for automatically discovering sensitive data in the database and submitting the sensitive data to a user to adjust and confirm, a masking task management module for configuring and managing the masking task of the database masking system; a masking configuration management module for managing and defining the sensitive data and performing masking algorithm and masking strategy management, a masking verification module for verifying the masking by comparing data before the masking with data after the masking, a multi-stage management module for realizing the status monitoring and strategy issuing and data synchronization of multi-stage masking equipment, and a security auditing module for analyzing the acquired masking log data in real time to guarantee the security of the database masking system. The invention further discloses a database masking method based on the big data.

The invention provides a pressure adjusting structure comprising a valve seat, an exhaust tube and a magnetic valve body. The lower end of the exhausting tube passes through the valve seat; the magnetic valve body sleeves the upper end port of the exhausting tube; a magnetic cushion block is arranged between the valve seat and the magnetic valve body; and the magnetic cushion block is connected with the valve seat via a magnetic cushion block adjusting structure adjusting up-down positions of the magnetic cushion block. When a pressure limiting value of a pressure-limiting valve has to be adjusted, the up-down positions of the magnetic cushion block is adjusted by the magnetic cushion block adjusting structure, so a distance from the magnetic gasket to the magnetic valve body can be changed; when the distance changes, magnetic field force between the magnetic cushion block and the magnetic valve body can be changed; the pressure limiting value of the pressure limiting valve is the self weight of the magnetic valve body and the magnetic field force between the pressure limiting valve and the magnetic valve body; the pressure limiting value of the pressure limiting valve can be adjusted and food cooking effect of the pressure cooker can be improved; meanwhile, the use of elastic components such as springs can be avoided in the adjusting structure, so fewer components are required; and the pressure adjusting structure is simply structured, convenient to assembly and has high reliability.

The invention discloses a neural network-based chat robot dialogue semantic intention prediction method and a learning training method. The prediction method is used for a chat robot to predict a possibly continuous dialogue intention or point of interest (one of multiple dialogue intentions or points of interest) of a dialogist according to a sequence (said) statement eigenvector of the human dialogist; and by heuristically selecting an output dialogue of the chat robot and taking an answer of the dialogist as a verification feedback of a previous intention prediction result, online reinforcement learning and self-updating of an algorithm are realized, the accuracy of dialogue intention prediction is continuously improved, the round number of chat can be increased, and the interest of thedialogist can be enhanced.

The invention discloses a new method for RAIM (receiver autonomous integrity monitoring) based on a satellite selecting algorithm in a multimode satellite navigation system. The method comprises the steps of first determining space position information of satellites according to a navigation message and eliminating satellites with a small elevation angle according to a shielding angle; determining an observation matrix including only one clock correction item according to clock correction conversion factors in the navigation message; selecting p satellites from N visible satellites so as to be used for positioning calculation of a receiver, acquiring a satellite combination, which enables the GDOP (geometric dilution of precision) to be minimum, through the satellite selecting algorithm to act as calculating satellites, and determining a weight matrix in WLS (weighted least squares) according to parameters such as the carrier-to-noise ratio, the loop bandwidth, pre-check integral time and the like of satellite signals; carrying out RAIM availability detection according to a false alarm rate and a missed alarm rate which are preset by the receiver, and calculating a pseudo-range residual error threshold value after positioning according to the false alarm rate and a degree of freedom in Chi-squared distribution; carrying out global detection at first, then carrying out local monitoring in a circumstance that a fault satellite exists, determining calculation satellites again through satellite selection, and finally carrying out positioning calculation through selecting satellite combinations within the threshold value. The method disclosed by the invention is simple, high in fault recognition rate, not only applicable to multi-mode and multi-fault satellite navigation systems, but also applicable to single-mode and multi-fault satellite navigation systems, thereby providing new ideas for carrying out RAIM by a modern GNSS (global navigation satellite system).

The invention relates to a system and a method for supporting a mixed service based on an integrated open network. The system is provided with a template multiplexing-based service generation subsystem, a mixed service-oriented multitask concurrent execution subsystem, a service resource access subsystem and a service management subsystem. The system provides template multiplexing-based service generation and multitask concurrent execution in the integrated open network environment by integrating an IP network with a PSTN, a 2G mobile network, a 2.5G mobile network and a 3G mobile network, and Wi-Fi, Wi-MAX and all kinds of heterogeneous networks of packet data network. In the system, the quick service generation is realized due to the adoption of a service system structure-oriented SOA and on the basis of the template multiplexing thought; and operation environment of an integrated network service is provided on the basis of a service bus integrated with a dynamic flow performance engine and a low delay event service engine, so the service capacity of integrating the internet with the telecommunication field is realized, and the aim of providing flexible and various personalized services and supporting multitask concurrent execution is fulfilled.

The invention discloses an unmanned plane flight control system. The unmanned plane flight control system comprises a main controller, an execution mechanism, a communication device and a ground station device. The master control system comprises a data collection module, a data processing module and a communication module. The data collection module is used for collecting measurement signals of various sensors and uploading the measurement signals to the data processing module. The data processing module can perform management and control on various flight modes and on an execution mechanismin the unmanned plane flight. The execution mechanism comprises a motor electric regulation device and a spraying device. The ground station device can perform track programming and can perform formation on multiple unmanned planes to carry out cooperated programming of multiple unmanned planes. The master controller realizes unmanned plane terrain simulation flight control, highly reliable faulttolerance control and autonomous obstacle avoidance control.

A switched-capacitor regulator is provided for regulating the output voltage of a voltage supply. The switched-capacitor regulator includes a supply input terminal capable of receiving a supply voltage, two or more flying capacitors, a regulation switch located between each flying capacitor and the supply input terminal, and a voltage control circuit. The activity of the regulation switches is controlled by the voltage control circuit. In one embodiment of the invention, the voltage control circuit includes a feedback resistance area having one or more feedback resistors located between the output of the flying capacitors and a ground terminal, a first gain stage connected to the feedback resistance area, and two or more second switchable gain stages, which are each connected to a regulation switch and the first gain stage. The switched-capacitor regulator operates in pseudo-continuous regulator mode using three-stage switchable operational amplifiers with time-multiplexed pole-splitting compensation.

The invention discloses a thin film conveying gluing device and belongs to the field of thin film processing equipment. The thin film conveying gluing device comprises a main support, a film guide mechanism, a film gluing mechanism and a film discharging mechanism, wherein the film guide mechanism, the film gluing mechanism and the film discharging mechanism are sequentially arranged on the main support in the thin film conveying direction. The film guide mechanism comprises a first film guide roller, a second film guide roller, a third film guide roller and a fourth film guide roller, wherein the first film guide roller, the second film guide roller, the third film guide roller and the fourth film guide roller are sequentially connected to the main support horizontally and rotationally in the thin film conveying direction. A static electricity eliminating board is arranged between the first film guide roller and the second film guide roller. A tension adjusting roller is arranged between the second film guide roller and the third film guide roller. The film gluing mechanism comprises a film pressing mechanism, a gluing roller, a glue feeding roller and a film gluing groove, wherein the film pressing mechanism, the gluing roller, the glue feeding roller and the film gluing groove are sequentially arranged from top to bottom. The surface of the gluing roller is attached to the surface of the glue feeding roller. The film gluing groove is an arc-shaped groove matched with the glue feeding roller in shape. The film discharging mechanism comprises a driving motor, a driving shaft, a driving screw and a film discharging roller. The thin film conveying gluing device is simple in structure, thin films can be glued rapidly, efficiently and evenly, and the requirement for production is met.

The invention provides a multimodal driver fatigue detection method and special equipment thereof. The special equipment comprises a dual-channel vision detection device, a multipoint pressure detection device and a physiological signal real-time detection device which are used for detecting the motion trails of heads, forms of human eyes and mouths, multipoint pressure change curves and pulses, so that information is subjected to multimodal fusion to form a set of multi-characteristic fatigue evaluation scheme; and the accuracy of fatigue detection is increased by multiple fatigue characteristics under the condition that the normal operation of drivers is not interfered. The system design gives priority to practicability, operability and humanization, and the stability and safety and reliability of the system is ensured. The method is reasonable, simple in device, accurate in detection and high in operability, and is favorable for popularization and application.

The invention belongs to electric power system transmission line relay protection field and relates to a method for judging failure property of single-phase self-adapting reclosing based on fault point voltage: real-timely acquiring the voltage and current value of every phase on one side of the transmission line; measuring failure distance; real-timely computing the current actual fault point voltage; finding out the sound phase current and fault phase voltage at the two ends of the line, then finding out the approximate open circuit voltage of the fault point and the set-pressure using the result of sound phase current and fault phase voltage and the result of failure distance measurement; comparing the fault point voltage with the set-pressure, an instantaneous failure is judged if the fault point voltage value is persistently larger than the set-pressure within the set time period after single phase tripping, and the protection sends out a reclosing order after certain time delay; an permanent failure is judged if the fault point voltage value is always smaller than the set-pressure within the set time period, and the protection will not reclose after tripping off the three phase line. The invention can ensure the persistency and stability of system power supply and avoid the damage by single phase reclosing and permanent failure to electric equipment.

The invention relates to a method for enhancing bituminous mixtures by adopting chopped basalt fibers, belonging to the technical field of novel compound materials. According to the invention, continuous basalt protofilaments or twistless rovings the surfaces of which are expanded into fibers in certain length, and then the fibers are used for enhancing the bituminous mixtures in a certain doping proportion and can be respectively used for maintaining the bituminous mixtures used for new construction and reconstruction and extension of highways and SMA and OGFC bituminous mixtures as well as fiber seals. In addition, the fibers can also be used for the enhancement of high-speed railway packing layer CA mortar and relevant hydraulic architectures. The chopped basalt fiber plays roles of enhancing, toughening and elasticizing the cracking prevention, crack resistance and reinforcement and 'bridging' in the enhanced bituminous mixtures, can obviously increase the anti-rutting ability of highways of the enhanced bituminous mixtures and reduces the whole life costs of the enhanced bituminous mixtures; if the fibers are used for high-speed railway plate-type ballastless tracks and CA mortar, the bending strength and the deformation resistance can be increased, i.e. the fibers play a role of crack prevention and crack resistance; in addition, the fibers have better anti-water leakage action if being used for Hydraulic and Hydro-Power Engineering.

The invention belongs to the field of mobile application of industrial robots, and discloses an omnidirectional intelligent mobile platform used as a chassis of an industrial robot. The industrial robot, a robot control cabinet for controlling the industrial robot to move and a power supply cable for powering the industrial robot and the robot control cabinet are arranged on the platform. A control system is arranged on the platform, a walking mechanism is arranged at the bottom of the platform, the control system controls the walking mechanism to drive the whole platform to move, and work of the robot is completed. The omnidirectional mobile platform based on Mecanum wheels is adopted as a base of the robot, and the robot can move on the ground in all directions. When the robot is located to work, four electric lifting supporting legs are adopted, the omnidirectional mobile platform is jacked till wheels are lifted, meanwhile, electromagnetic suction cups are adopted at the bottoms of the lifting supporting legs to be attracted to ground sizing blocks, the whole base is fixed to a work position, the stability and rigidity of the base of the robot are guaranteed, and the need for the precision of the tail end of the robot is guaranteed.

The invention discloses a tilt ducted unmanned aerial vehicle. A central duct is arranged in an inner cavity of a center of a body, and is connected with the body through a tilting axis; the part of the body connected with the tilting axis is provided with a duct tiling mechanism; wings are symmetrically arranged on two sides of the body; a nose and wingtips of the wings are provided with posture control ducts; the lateral rear of the body is provided with extraverted double vertical tails; the rear of the extraverted double vertical tails is provided with a rudder; the lower side of the body is provided with a front three-point wheel landing gear; and the central duct, the duct tilting mechanism, the posture control duct and the rubber are respectively connected with a flight control system. The tilt ducted unmanned aerial vehicle has the advantages that: 1, a tail-free and large-triangle wing fusion layout is adopted, and the pneumatic property is good; 2, a unique tilt central duct design is adopted; 3, a unique three-duct posture control design is adopted; and 4, a duct rotor wing design is adopted, namely all paddles are embedded in the ducts, and the flight safety in an complex environment is effectively improved.

The invention provides a coordination control method for vehicle path tracking and stability. The method includes the following steps: step S1. performing vehicle modeling; step S2. performing estimation on a vehicle state and system interference based on Kalman filtering; and step S3. performing integrated control on the vehicle path tracking and stability. The method establishes a vehicle dynamics model and a path tracking model, and designs an estimation method of the vehicle state and steering system interference. An upper-layer controller is designed by using a sliding mode control method, which aims to ensure the stability of a vehicle itself while reducing course deviation and lateral deviation during a path tracking process. In a lower-layer controller, a method for optimal distribution of a wheel tire force is designed, and according to requirements of the upper-layer controller and combining yaw and roll stability conditions of the vehicle, directional control distribution ofthe wheel tire force is achieved. The coordination control method can ensure that a wheel independently drives the smart automobile to achieve a path tracking effect, and also ensures lateral and roll stability of the smart automobile itself.

The invention discloses a frost-less air-source heat pump hot water unit and a proportional-integral-differential control method for the same. The proportional-integral-differential control method includes performing computation according to received air temperature and humidity parameters, received air pressure parameters and received surface temperature parameters of an evaporator when outdoor temperature parameters which are transmitted by a temperature and humidity sensor and are received by a computation controller are lower than 0 DEG C, controlling the opening of an electronic expansion valve according to a computation result and regulating the surface temperature of the evaporator by means of increasing or reducing the opening of the electronic expansion valve so that the surface temperature of the evaporator is constantly higher than a frost formation point; and enabling a silicon-controlled power regulator to judge a suction superheat degree of a compressor according to received suction temperature and suction pressure of the compressor, increasing or reducing the power of an electric heater and maintaining that the suction superheat degree of the compressor only varies within a set value range. The frost-less air-source heat pump hot water unit and the proportional-integral-differential control method have the advantage that adjustment for the opening of the electronic expansion valve is matched with adjustment for the power of the electronic heater, so that the purpose of maintaining safe and efficient running of a system is achieved.

The invention discloses a method for reducing the content of cadmium in middle rice. The method includes the following steps that after middle rice of the first year is harvested, middle rice straw is returned to the field directly, and tillage is conducted so that the middle rice straw can be evenly mixed with soil; hyperaccumulation plants are planted in a paddy; after the hyperaccumulation plants are removed from March to May in the second year, soil heavy metal passivator is scattered on the surface of soil of the paddy; tillage is conducted, and base fertilizer is applied 3-5 days later; tillage is conducted, and rice is transplanted; during planting of rice, a foliar resistance control agent is sprayed in the later tillering stage and the booting stage of rice respectively, wherein spraying time interval is 5-10 days; field drying is conducted in the later tillering stage, natural drying is conducted in the maturation stage, and flooding irrigation is conducted in other development stages. According to the method, crop production and straw resource utilization are not affected, the dual targets of reducing the paddy soil cadmium content and reducing the rice cadmium content are achieved under the combined action of plant extraction, soil passivation, foliar resistance control and water management, and effects are more remarkable compared with other combination technologies.

The invention relates to the technical field of computer networks, and discloses a method for generating and maintaining a virtual backbone network in mobile adhoe networking. The method comprises the following steps: S1, under the control of a timer, a node u carries out environment perception on exchange state information among neighbor nodes of the node u, selects an initial cluster and declares respective regions; S2, each node selects a neighbor node with highest priority as an access node, continuously adds the access node into different regions, and constructs a region virtual framework network using the initial cluster as a center in a distributed manner; and S3, constructing a global virtual framework network by selecting a boundary gateway node to be communicated with the adjacent region virtual framework network. According to the invention, the problems of low efficiency and instable data routing under dynamic topology of a flooding route mode can be effectively solved.

The invention discloses an automatic parking space detection and identification system based on a panorama visual assistance system. The system mainly aims at solving the problems that in the prior art, since a parking space marking line is not complete and there is shade or an obstacle in the parking space, the parking space detection and identification are inaccurate. The system includes a camera detection module and an identification module, and cameras are installed around a vehicle to splice a seamless panorama image capable of reflecting the surrounding information of the vehicle; the detection module completes detection of a parking space marking line and completes the parking space detection according to the perimeter of the marking line under the situation that the parking space marking line is not complete; the identification module completes the parking space identification by calculating a difference value of the gray level change in the parking space and the height of an obstacle in the parking space under the situation that there is shade or the obstacle in the parking space, and the detection and identification results are displayed on a vehicle-mounted central control big screen. The automatic parking space detection and identification system achieves efficient and accurate detection and identification of the parking space, provides effective bases for route planning and route tracking control in later automatic parking, and can be used by a driver to find a parking position.

The invention discloses a jewelry online design system and an online design method thereof. The jewelry online design system and the online design method thereof are based on digital and visual data processing technologies, and can allow a user to design jewelry styles independently and adding design element symbols flexibly online in a remote manner. The jewelry online design system can view a three-dimensional virtual effect picture of the user wearing the self-customized and designed jewelry in real time, and can carry out three-dimensional printing on the jewelry which is independently designed by the user in a remote manner, so as to output a model sample or commodity entity of the designed jewelry; the jewelry online design system greatly improves design efficiency of the user, is suitable for all types of users to participate since the user does not need to have professional design or drawing knowledge, enhances interactivity, allows the user to select personalized and differentiated portion design elements online from a massive element database flexibly and independently, completes the combined design of rings and other types of jewelry rapidly, and significantly improves the practicality and convenience of jewelry independently designed by the user by means of the functions such as online design, bidirectional scanning and virtual try-on.

A natural composite powder for improving immunity, and preparation method and application thereof; the composite powder comprises the following raw materials in parts by weight: 1-50 parts of cabbage powder, 1-100 parts of wheat flour, and 0-50 parts of other vegetable powder and / or fruit powder. The composite powder is prepared by employing superfine grinding technology.

The invention discloses a horizontal arm type three-coordinate measuring and ruling machine, which includes a base, an upright column and a horizontal arm, wherein the upright column and the horizontal arm are made of lighter material, namely aluminum; all three shafts adopt two sets of linear slides; and the linear slide of the horizontal arm is mounted by adopting two mutually vertical surfaces, and an adjustable pull rod is mounted in the horizontal arm for adjusting the curve and deformation caused by other causes as self weight. The horizontal arm type three-coordinate measuring and ruling machine solves the problems in the market that the existing three-coordinate ruling machine has unstable mechanism, complex structure and high cost, and is complex to machine the parts and inflexible to operate. The shafts are mutually vertical and matched with the precise linear slides to realize the three-dimensional movement, so as to achieve the measuring and ruling functions in the three-dimensional space; and the three-coordinate measuring and ruling machine can support all sorts of triggering, analog scanning and non-contact optical measuring heads, and can be widely applied to the measuring and ruling of large mechanical parts as automobiles, motorcycles, excavators, ship engines and dies.

A method for communication link for an access network device. The access network device comprises: a node server, an access switch, and a terminal. The method comprises: the node server requesting for a protocol packet on the basis of a service initiated by the source terminal; acquiring a piece of communication link information of the current service, and the communication link information comprises a piece of communication port information for the node server and the access switch involved in the current service; on the basis of the communication port information for the node server, the node server setting up within an internal data packet address table the port directed by the data packet of the current service; on the basis of the communication port information for the access switch, transmitting to the corresponding accessing switch a port configuration command; on the basis of the port configuration command, the accessing switch setting up the port directed by the data packet of the current service within an internal data packet address table. By means of the present invention, the stability of a transmission channel is ensured, thereby avoiding delays for multimedia services.

The present invention provides welder and welding method combining two different kinds of heat source, laser and HF inductor, and adopts real-time temperature monitor and control to overcome the demerits of common laser welding of metal material, which has low energy utilization and is likely to produce air hole. During welding, two kinds of heat source are used to heat the welded part and near part simultaneously. The welder of the present invention has laser welding head as the main body comprising integrated induction heating winding and infrared sensor. Compared with common laser welding, the present invention has greatly raised production efficiency and welding quality and can realize 2D and 3D welding.

The invention discloses an energy-saving type single-phase alternating current machine starting protector, and belongs to the technical field of refrigerating compressor. The energy-saving type single-phase alternating current machine starting protector comprises a shell, a single-phase alternating current machine starter, a single-phase alternating current machine protector and a shell cover; a positive temperature coefficient thermistor cavity and a single-phase alternating current machine protector cavity are formed in a shell cavity; the single-phase alternating current machine starter comprises a positive temperature coefficient thermistor, a first pin and a second pin; the single-phase alternating current machine protector is arranged in the single-phase alternating current machine protector cavity; the shell cover is matched with the shell. The energy-saving type single-phase alternating current machine starting protector is characterized in that a plug-in piece is extended from a reed of the first pin, and a plug-in-piece hole, a first pin hole, a second pin hole and a protector pin hole are formed in the shell; a pair of bottom-wall top embossments are formed in the cavity bottom wall of the positive temperature coefficient thermistor cavity, side-wall top embossments are formed in the side cavity walls and the rear cavity wall, the lower portion of the positive temperature coefficient thermistor is supported by the pair of bottom-wall top embossments, the front side of the positive temperature coefficient thermistor is contacted with the front cavity wall top embossments, and the rear side of the positive temperature coefficient thermistor is contacted with the rear cavity wall top embossments. The energy-saving type single-phase alternating current machine starting protector has the advantages that the energy-saving effect is good, the size is small, and the weight is light; the installation is convenient; a mold structure is simplified; electric short-circuit is prevented; the assembling efficiency is high.