30results about How to "Simplify engineering installation" patented technology

The invention discloses a photovoltaic power generation device with a global maximum power output function, which comprises a photovoltaic cell array and a main converter, wherein the photovoltaic cell array comprises a plurality of series photovoltaic cells. The photovoltaic power generation device also comprises a power adjustment array and an auxiliary converter, wherein an input end of the auxiliary converter is connected with a direct current bus of the photovoltaic cell array, and the power adjustment array comprises power adjustment units corresponding to the photovoltaic cells one by one; and the power adjustment units are connected with the corresponding photovoltaic cells in parallel, and input ends of the power adjustment units are connected with an output end of the auxiliary converter. The photovoltaic power generation device has the advantages that the structure is simple, the cost is low, and the reduced output current under partial shade conditions can be automatically compensated to realize the maximum power output of a single photovoltaic cell.

The invention discloses a device and method for detecting speed measurement errors of a speedometer of a motor vehicle. The device at least comprises two portal frames arranged in a spaced mode. Vertically-downward laser distance measuring sensors are arranged on the portal frames and used for recording information of time when the vehicle passes the distance measuring sensors, and a height information value of the point is acquired through the change the length of of a laser transmission path. The laser distance measuring sensors send the detected time information and detected height information to a computing unit through a controller, the computing unit sends data of the computed time information, the computed height information, computed speed information, computed image information and the like to a central management unit, and the central management unit is a management system based on a computer, a server and software. According to the device and method for detecting the speed measurement errors, high-accuracy speed measurement and high-accuracy measurement of the speed measurement errors of the speedometer can be acquired, and meanwhile engineering installation is simple and cost is low.

The invention discloses a fresh air unit of a special air conditioning heat pump for capillary radiation and a control method thereof. Cold and heat sources required by the tail end of an air conditioner and treated fresh air are provided simultaneously by employing a set of unit so as to meet the indoor air conditioning demand and the demand on fresh air ventilation volume. According to the technical scheme provided by the invention, the fresh air unit of the special air conditioning heat pump for capillary radiation provides cold and heat sources and fresh air volume simultaneously in the set of unit, so that coordination and unification and intelligent and precise control of an air conditioning cold and heat source system and a fresh air processing system are achieved. The fresh air unit of the special air conditioning heat pump for capillary radiation and the control method thereof disclosed by the invention are efficient and energy-saving, intelligent integration and control are realized, and the unit is stable and reliable to operate.

The invention discloses a transmission system of user data under an SDI audio and video transmission mode and a method therefor; the system consists of a sending terminal and a receiving terminal, wherein, the sending terminal packets the user data, edits SDI audio and video data into the user data in a mixing way according to the characteristics of video data, and sends the data into a receiving device; the receiving terminal is used for separating audio, video and user data according to the characteristics of SDI data and the video data and making user data reconstitution according to the specified format. Therefore, the aim that the user data can be synchronously transmitted under the SDI audio and video transmission mode is achieved, and a single coaxial cable is connected with a terminal device and a front end device, thus the original multi-cable connection way can be replaced, the engineering installation is simplified, and the reliability of the system is improved.

The invention relates to an Ethernet switching system based on the CATV cable transmission network. The technical problem solved by the invention is to provide an Ethernet switching system which has the advantages of the lowest access cost, the simplest engineering reform and stable performance. The technical proposal includes that the Ethernet switching system based on the CATV cable transmission network comprises a local end device and a terminal device, and is characterized in that the local end is composed of a local end power supply, an RJ45 network interface, a link state indication part, an Ethernet switching control part, a physical layer interface circuit, a network transformer, a low pass filter, a high pass filter, a coaxial cable terminal, a CATV signal distributor, a local system configuration part and a local control port; the terminal device comprises a passive client and an active client. The Ethernet switching system based on the CATV cable transmission network is applicable to the last a hundred meters centralized distribution access part in the bidirectional reform of the broadcast television network and realizes the starting of the user broadband service or the video on demand (VOD) television interaction service.

The invention provides a lightning-protection type GNSS (Global Navigation Satellite System) signal relay amplifier which is suitable for long-distance transmission of GNSS signals and is applied to a clock system for mobile communication. The invention aims at providing a high-reliability GNSS signal relay amplifier capable of avoiding the use of a lightning arrester and effectively preventing the damage caused by lightning stroke. The lightning-protection capability of the GNSS signal relay amplifier meets the requirements of YD/T5098-2011 communication bureau (station) atmospheric overvoltage protection engineering design specification of communication industry standard. The GNSS signal relay amplifier consists of a thread-fixed closed needle type radio frequency connector, a closed aluminum alloy protection shell, a box body sealing rubber ring, a lightning-protection type GNSS low-noise amplification module and a plurality of bolts and has the advantages of being simple in structure, effective in lightning protection, excellent in sealing property and convenient for construction, cost-saving and meeting the requirements of the industry lightning-protection standard.

The invention discloses a LED internal control guardrail tube control system, comprising a programming controller and at least one LED internal control guardrail tube, each LED internal control guardrail tube is connected in series according to the data flow direction; the programming controller includes a data programming module and a data communication Control module; the LED internal control guardrail tube is provided with a light-emitting PCB board and a control PCB board; the control PCB board is provided with a micro-control unit and an electric erasable storage unit for controlling the work of the LED internal control guardrail tube. In the present invention, the LED internal control guardrail tube does not need to pre-burn the demo control program before leaving the factory, and does not need to pre-set the code mark; it does not need an external programming controller during work, and each LED internal control guardrail tube can work independently without failure. It does not affect the normal work of other LED internal control guardrail tubes, thus greatly improving the overall reliability of the system, while reducing the overall cost of the project, and has a better market prospect.

The invention discloses a temperature control device for yielding water of a single-heat type heat pump water heater. A pipeline is connected with a heat storage water tank, a tee-joint proportioning valve, a heating water heat exchanger, a water pump and a yielding water constant temperature control module connected with the heat storage water tank, wherein the yielding water constant temperature control module is connected with an ambient temperature probe, and controls the switching on and off of the tee-joint proportioning valve; and an opening in the A-B direction of the tee-joint proportioning valve is communicated with a water inlet end, and an opening in the B-C direction is communicated with the heating water heat exchanger. In addition, the invention also discloses a temperature control method, the temperature of the heat storage water tank, the ambient and the heating water heat exchanger are subjected to sampling detection, and according to different ambient temperatures, different yielding water temperature values can be set, the switching on-off degree of the tee-joint proportioning valve is adjusted, the water feeding amount is adjusted by the temperature control regulating valve, so that the yielding water temperature of the heating water heat exchanger can reach the set value. The temperature control device can run with safety, stability and high efficiency, and meanwhile, the engineering installation is simple, the cost is low, and the supplied hot water is constant.

The invention relates to a passive heat pipe natural cooling multi-connection refrigerating system and a control method thereof. The refrigerating system comprises a multi-connection heat pipe evaporator module and a concentrated heat pipe cold source module; the multi-connection heat pipe evaporator module comprises at least one heat pipe evaporator; the concentrated heat pipe cold source modulecomprises a compression unit, a first bypass branch pipe, a heat pipe condenser, a heat exchange medium pressurizing unit and a second bypass branch pipe; the compression unit is connected with the heat pipe evaporators and used for compressing a heat pipe heat exchange medium; the first bypass branch pipe is connected with the compression unit in parallel; the heat pipe condenser is connected with the compression unit and the first bypass branch pipe and used for cooling the heat pipe heat exchange medium; the heat exchange medium pressurizing unit is connected with the heat pipe evaporatorsand the heat pipe condenser and used for conveying the heat pipe heat exchange medium cooled by the heat pipe condenser to the heat pipe evaporators; and the second bypass branch pipe is connected with the heat exchange medium pressurizing unit in parallel. According to the passive heat pipe natural cooling multi-connection refrigerating system and the control method thereof, outdoor natural coldsource refrigerating is fully utilized, and the energy saving advantage is obvious; meanwhile, heat pipe phase change heat exchange is adopted, and the heat exchange efficiency is high; and the heat pipe evaporation tail end is flexibly designed, scattered design is conducted according to the requirements, and the refrigerating system is not limited by the spatial structure.

A wireless video real-time monitoring system, including setting a wireless camera with a wireless camera driver at a position to be monitored, the wireless camera driver is connected to a wireless network for wireless communication, and the wireless network is also connected to a local video surveillance server for wireless communication, The wireless network is also communicated with the intelligent broadband access gateway, and the intelligent broadband access gateway is also communicated with the IPV6 or IPV4 Internet, and the IPV6 or IPV4 Internet is also communicated with the local video surveillance server and the remote video surveillance server; the acquired video The information can not only provide local viewing and storage, but also can be conveniently viewed in different places through the Internet, which overcomes the excessive investment in the private network, the difficulty of realizing ultra-long-distance multi-terminal sharing of real-time video information, and the inability to send the video information through the Internet To the city center for shared flaws.

The invention provides a technology for preparing a sound absorption material which is of a composite hole structure and is broad in sound absorption frequency through waste plastic. The technology specifically includes the processes of mixing, foaming, perforating, back cavity creating and the like. The technology is characterized in that after foaming, perforating, semi-perforating and back cavity treatment are conducted, sound absorption material hole channels are arranged in a criss-cross manner, the product is endowed with good low-frequency, medium-frequency and high-frequency broadband sound absorption effects, and the sound absorption frequency range of the material is greatly enlarged; the machining process is simple and easy to conduct, three waste is not generated, and the finished product can be recovered, re-machined and recycled after being abandoned; and the manufacturing technology is low in construction cost, the engineering installation is simple, the overall engineering thickness is generally 1 cm to 3 cm, the relative density is about 0.50 ton/m<3>, and the technology is suitable for establishing and use of sound absorption facilities of high-speed rails, city elevated roads, bridges, highway tunnels, building ceilings and the like.

The invention relates to a passive type heat pipe natural cool multi-union refrigeration system with an auxiliary cold source and a control method of the passive type heat pipe natural cool multi-union refrigeration system. The refrigeration system comprises a heat pipe circulation system and an auxiliary cold source circulation system. The heat pipe circulation system comprises at least two heatpipe evaporators, a heat pipe condenser connected with the heat pipe evaporators and used for cooling heat pipe heat exchange media, and a heat exchange medium pressurizing unit, wherein the heat exchange medium pressurizing unit is connected with the heat pipe evaporators and the heat pipe condenser and used for conveying the heat pipe heat exchange media obtained after heat pipe condenser cooling to at least two heat pipe evaporators. The auxiliary cold source circulation system comprises a heat exchanger used for conducting heat exchange on the heat pipe heat exchange media and the auxiliary cold source, and a compressor for compressing the auxiliary cold source. A cold source inlet of the heat exchanger is connected with a cold source outlet of the condenser, and a cold source outlet of the heat exchanger is connected with a cold source inlet of the compressor. A heat exchange medium inlet of the heat exchanger is connected with an outlet of the heat pipe condenser. A heat exchangemedium outlet of the heat exchanger is connected with an inlet of the heat exchange medium pressurizing unit.

The invention relates to a non-choked flow anti-series valve for a discharge pipeline of a residential housing which has the function of preventing mixed smoke and flavors. The invention includes a flange opening, a valve core, a valve cover and an air guide hopper; the valve core is a cylindrical or a square cavity; a discharge opening is upward; the lower end of the valve cover is hinged with the lower part of the port of the valve core; the outside air guide hopper and the valve core are sealed as a whole to guide the air inside the valve core to be successfully discharged into the pipeline without any resistance. The bottom surface and the lower side surface of the whole valve are protected by the air guide hopper, the air flow inside the cavity of the valve core is not disturbed by any air flow; simultaneously the air guide hopper has the function of limiting the valve cover. The invention eliminates the traditional device the inside of the pipeline of which is provided with a guide pipe, thus fundamentally solving the problem that the inside of the traditional upper-opened discharge valve is attacked by the main air flow from the bottom surface and the lower side surface in the pipeline, thus leading the air flow to be resisted. Seen from the above, the non-choked flow anti-series valve for a discharge pipeline of a residential housing has a more reasonable structure, is simply mounted, seals tightly, has a low processing cost and discharges more smoothly.

The invention discloses a distributed data acquisition system using a cable magnetic field for power supply. The distributed data acquisition system comprises an alternating current source, a cable, a wireless energy acquisition circuit, and a data acquisition device. The transmitting end of the system adopts an underwater cable having a complete waterproof function, and the wireless energy acquisition circuit and the data acquisition device are packaged in a completely sealed way, and therefore underwater working is realized. The magnetic field is generated in the signal transmitting cable of the transmitting end by the alternating current, and the current is sensed in peripheral wireless energy acquisition coils, and therefore a one-to-many wireless electric energy transmission system is realized. The data acquisition device is used to monitor environmental parameters, which are transmitted to an upper computer, and therefore real-time monitoring of underwater severe environment is realized.

The invention relates to a white smoke eliminating system for mixed flue gas outside a condensation warm air chimney. The system comprises a chimney, and is characterized in that the chimney is partitioned by a chimney partition plate, and a plurality of windows are formed in the upper part and the lower part of the chimney respectively; a plurality of air cooling condensers are symmetrically arranged on the periphery of the chimney, the air cooling condensers are provided with flue gas leading-out connectors in butt joint with the lower windows and flue gas returning connectors in butt jointwith the upper windows, tangential rotational flow guide plates are installed at the outlet ends of the flue gas returning connectors, finned tubes are arranged in the air cooling condensers, and fluegas flows in the finned tubes; and fans are arranged on the upper portions of the air cooling condensers, outlets in the upper portions of the fans are connected with a warm air chamber, and a warm air cylinder is arranged on the upper portion of the warm air chamber. The system has the beneficial effects of small size, low weight, no auxiliary system, simple engineering installation, good whitesmoke elimination effect, low investment and low operation cost.

The invention discloses a heat pump main unit. The heat pump main unit comprises a heat pump device and a controller, the controller comprises a first simulation signal input module, a second simulation signal input module, a first electric signal output module and a second electric signal output module. According to the heat pump main unit, the control function of a whole heat pump system is integrated into the controller of the heat pump main unit, intelligent control over the heat pump system is ensured, and engineering mounting is simplified.