218 results about "Dry contact" patented technology

Footwear with a sole formed from an elastomeric material whose grip is improved on ground where the interface may include an intermediate foreign substance, this sole comprising lugs (31) separated from each other by grooves (35). The walls of the grooves (35) are cut into the thickness of the elastomeric material and delimit patterns with sharp angles in the profile of said lugs (31) which can pierce said foreign substance to establish direct dry contact between the two surfaces. Each lug (31) forms a star-shaped pattern having at least five arms in the form of stems (32) distributed over its, profile and each stem (32) is orientated radially towards the outside of the pattern and terminates in an end. Each stem (32) is separated from its neighbor by a recess (38) in the profile of the lug. Finally, each lug (31) has a stem (32) engaged in a space of the adjacent groove (35) which is delimited by a recess (38) between two neighboring stems in the profile of a second lug neighboring the first lug.

The invention relates to a relay protection device pressboard outlet logic detection apparatus. The logic detection apparatus comprises a relay protection device outlet pressboard ms-level instantaneous voltage impulse detection circuit, a relay protection test-stand dry contact state detection circuit, a microprocessor, a drive, timing display and sound-light alarm circuit and a power indication and grounding disconnection indication circuit, wherein the output terminals of the relay protection device outlet pressboard ms-level instantaneous voltage impulse detection circuit and the relay protection test-stand dry contact state detection circuit are connected with corresponding input terminals of the microprocessor respectively; the output terminal of the microprocessor is connected with the input terminal of the drive, timing display and sound-light alarm circuit; the input terminal of the power indication and grounding disconnection indication circuit is connected with the output terminal of the drive, timing display and sound-light alarm circuit. The advantages of the logic detection apparatus are that: detection accuracy and sensitivity are high, and wiring and operation are simple.

The present invention is a method and system for monitoring the continuous flow of power delivered by multiple DC Direct current operated starter motors used to start engine driven electrical generators. The method and system comprise the closing of a starter battery system and an associated starter control switch, causing the starter battery system to discharge through a shunt whereby current is fed into a starter motor. The shunt is optionally provided as a precision resistor with a pre-calibrated voltage drop in millivolts DC proportional to a current passing through it. The shunt directs current to a meter relay, which is calibrated by establishing two set points, or desired trigger ranges, for the meter relay. If the current falls outside a range established by the two set points, then a meter relay alarm output is activated; and, if the current remains within the range, then the meter relay alarm output is not activated. The meter relay alarm output is, optionally, a dry contact which activates a signal device.

The present invention provides apparatus for a non-contact method of obtaining accurate three-dimensional measurements of a dry contact lens, more specifically, using dry lens metrology to know the exact thickness of a contact lens.

The invention relates to an automatic subway train tracking system based on a digital cluster. The automatic subway train tracking system based on the digital cluster is mainly realized by the invention, and the train running state is analyzed by digital cluster system information; some state information of a digital cluster vehicle-mounted terminal on a train is obtained, such as startup and shutdown state information, dry contact information and affiliation base station information; the information is displayed in a graphical way, so that a dispatcher can more intuitively know the working state, the running direction and the running position of each train. By using the automatic subway train tracking system based on the digital cluster, the effective train scheduling can be realized by assisting the dispatcher, positive significance is realized in the aspects of guaranteeing the safe operation of subway trains and protecting the life and property safety of people, rapid troubleshooting and fault resolution are facilitated, and the troubleshooting efficiency is improved.

The invention discloses a junction-to-case thermal resistance testing method, comprising the following steps of: (1) measuring a transient cooling curve of a to-be-tested device under a dry contact condition; (2) measuring a transient cooling curve of the to-be-tested device under a wet contact condition; (3) calculating difference Delta T between temperature variation amplitudes of the transient cooling curve under the dry contact condition and the transient cooling curve under the wet contact condition; (4) warming up a constant-temperature heat dissipation cold plate in the tested equipment by Delta T, and measuring the transient cooling curve under the wet contact condition again; (5) calculating the junction-to-case thermal resistance according to the dry-contact transient cooling curve measured in the step (1) and the wet-contact transient cooling curve measured in the step (4).

An electronically controlled programmable system and method for removing debris such as stray contact lenses adhered to process trays. A combination of low and high pressure aqueous sprays is applied to surfaces of a process tray to be cleaned thereby disturbing and removing stray lenses adhered to the tray. The sprays also hydrate dried contact lenses to assist in breaking their adhesive bond to the tray. After removal of stray lenses the system washes and rinses the trays using filtered mains water, purified or distilled water. Trays are automatically loaded and unloaded to and from a cleaning zone within the system.

The invention relates to a stand-by pump automatically-starting control logic device with two pumps mutually serving as stand-by pumps. The stand-by pump automatically-starting control logic device is connected with an electrical control cabinet for controlling the A pump and the B pump. Dry contact signals for automatically starting the A pump, dry contact signals for automatically starting the B pump, dry contact signals for operating the A pump and dry contact signals for operating the B pump are output by the electrical control cabinet in a connecting mode. The stand-by pump automatically-starting control logic device is characterized by comprising an A pump control logic device body, a B pump control logic device body and an interlocking logic module. The electrical control return circuit of the A pump control logic device body and the electrical control return circuit of the B pump control logic device body are completely coincident in wiring. The interlocking logic module is additionally arranged. The interlocking logic module serves as a bridge to enable the two pumps to be ingeniously connected into a whole so that the operability of the two pumps can be easily achieved. The A pump and the B pump are controlled by the stand-by pump automatically-starting control logic device, therefore, the wrong motions of an operator can be reduced, the stand-by pump can be reliably and timely started, and the A pump and the B pump can completely and mutually serve as the stand-by pumps.

The invention discloses a hollow paddle type sludge drying technique, which comprises the following flows: (1) drying wet sludge, namely conveying the wet sludge to a paddle dryer for drying through a sludge pump, discharging the dried sludge from a bottom of the paddle dryer, and after temporarily storing the dried sludge in a dry sludge surge bunker, conveying the dried sludge into an incinerator for incineration; (2) drying carrier gas, namely making wet gas generated by drying contacted with a large amount of injected washing cooling water and cooling quickly, condensing steam in the wet carrier gas and meanwhile removing dust particles, removing a large amount of steam and the carrier gas in the dust particles, allowing part of steam and carrier gas to enter the incinerator, and allowing the rest part of steam and carrier gas to enter the paddle dryer for recycling; and (3) washing, namely after washing most of the dust particles and the steam in the wet carrier gas, ensuring that washing water flows from the bottom of a washing tower and enters a sedimentation basin, settling the dust particles to enter a cooling tower, and allowing the cooled washing water to enter the washing tower again for recycling.

The invention discloses an integrated charging system. The integrated charging system comprises a controller, a phase-shifting transformer, a rectifying module, a DC-DC module, a switch array and a charging gun head. The controller is in communication with the DC-DC module. The controller is connected with a dry contact signal of the switch array. The phase-shifting transformer, the rectifying module, the DC-DC module, the switch array and the charging gun head are electrically connected in sequence. Common direct-current bus voltage is provided for a plurality of DC-DC charging modules by thephase-shifting transformer and the rectifying module. The output of DC-DC module is output to a charging gun through a flexible switch array. The controller control switch state, the charging power of each charging gun can be reasonably distributed, the utilization rate of a charger is improved, and the cost is reduced. Meanwhile, an integrated high-power charging system adopts a phase-shifting transformer and a rectifying module, so that the loss is reduced, and the overall efficiency is improved.

A new-type intelligent ventilating frequency-conversion controller controls an air blower through a frequency converter to control X ventilating rooms, and comprises a dry contact input circuit of the ventilating rooms, a ST single chip microcomputer and the following devices connected with the ST single chip microcomputer: a relay control device, an output circuit, a photoelectrical isolation circuit and an RS485 circuit, a ferroelectric storage, a clock circuit, a LCD (Liquid Crystal Display) and an input key. The controller of the invention has the advantages that: the controller completely replaces traditional PLC (Programmable logic Controller) under the condition of ensuring rational design of a circuit diagram, reliable selection of devices and exquisite manufacturing process; the hardwire cost is greatly reduced in contrast to the traditional PLC; plenty of software functions can be realized to reach the purposes of being fully energy saving, convenient for operation and suitable for the situation that each air passage control has different quantity of rooms, an air-passage control system can be randomly refitted according to the cost and actual situation. The onsite programming of a user is not needed and great convenience is brought to later modification and adjustment of the ventilating rooms.

The invention discloses a PCBA (printed circuit board assembly) detecting device and a detecting method. The detecting device comprises a code scanning gun, a clamp, a displayer, a control module, a server, a core control system, a digital multimeter module, a simulative battery module, a programmable direct current power module and a direct current electronic load, and others; the core control system comprises a power processing unit, a control unit, a sampling unit, a communication unit, a dry contact unit, a charging machine simulative unit, a small load unit, an insulation simulating unit, a switch matrix unit, a NTC detecting unit, a clock detecting unit and a digital input/output unit. The PCBA detecting device and the detecting method apply a brand-new software framework to realize the complete automation of the function testing process, and the resource is fully used; meanwhile, data is accessed to a MES system and can be checked at any time and any place in the era of unblocked network; moreover, the whole detecting device is convenient to operate and has the advantages of greatly improving the testing efficiency and reducing the testing cost of the factory PCBA.

Provided are a device and method for detecting the connectivity of a digital input signal line of a PLC. The digital input signal line is serially connected with sensors which are powered by a DC voltage. The device includes capacitors which are connected in parallel with dry contacts of the sensors; and a three-end switch. A public end (K) and a first contact end (K1) of the three-end switch are serially connected to the digital input signal line. The first contact end of the three-end switch is connected to an input public end of the digital input signal line. A second contact end (K2) of the three-end switch is connected to the DC voltage. When connection and disconnection of the public end (K) to the first and second contact ends (K1, K2) of the three-end switch are controlled through an internal part of the PLC, the device judges whether open circuits exist in the digital input signal line of the PLC according to whether current pulses are detected by the PLC in digital input channels.

The intelligent controller provided by the present invention obtains the control information input by the user through the dry contact panel linkage unit and forwards it to the control chip, and the control chip outputs the information through the relay output unit, the dimming control unit, the curtain output unit, and the fan coil unit respectively. The unit and the RS485 gateway protocol conversion unit realize the control of various smart devices; since the smart controller is an integrated device, each unit that realizes various functions is integrated in the smart controller without additional wiring The connection and assembly avoid the problems of high cost, many wirings and large volume caused by independent modules in the prior art.

The invention relates to a method for preparing cyclohexanone. The method includes, under oxidation reaction condition, allowing contact of cyclohexane and hydrogen peroxide in the presence of catalyst, wherein the catalyst is obtained by allowing contact of Ti-Si molecular sieve and modification liquid at 80-200 DEG C., drying contact product, and roasting, the modification liquid is a water solution containing organic base, and the mass ratio of the Ti-Si molecular sieve to the modification liquid is of 100:(10-150), and the ratio of the Ti-Si molecular sieve accounted by gram to the organic base accounted by mole is 100:(0.005-0.2). The inventive method has high cyclohexane conversion rate and cyclohexanone selectivity. Furthermore, the catalyst used in the method has good stability, and high catalytic activity even if it is used for long time. In addition, the inventive method is simple, easy and environment friendly.

The invention relates to a main transformer protection tripping matrix exit auxiliary tester comprising a direct-current power supply VCC, a power switch K1, a time switch K2, an operation indicating lamp, ten detection and sound-light alarm circuits which are same in structure and ten time recording and displaying circuits which are same in structure, wherein the operation indicating lamp is connected with the direct-current power supply VCC through the power switch K1; the input terminals of the detection and sound-light alarm circuits are respectively connected with the lower opening corresponding ends of a tripping plate of a relay protection device to be tested; the power terminals of the detection and sound-light alarm circuits are connected with the direct-current power supply VCC through the power switch K1; the input terminals of the time recording and displaying circuits are respectively connected with a pair of dry contacts of a relay protection test bed; and the power terminals of the time recording and displaying circuits pass through the time switch K2 and the power switch K1 in sequence and then is connected with the direct-current power supply VCC. The advantages of the auxiliary tester are that: accuracy and sensitivity of the detection are high; and operation is safe, rapid, easy and feasible.

The invention provides a self-diagnosis detection circuit, device and method of a digital output channel, belongs to the technical field of industrial control, and aims at solving the problem that a technical scheme of simple and reliable self-diagnosis of the digital output channel lacks in the prior art. The circuit comprises an electromagnetic relay, and the electromagnetic relay is set to receive a digital control signal and output an electric signal converted by an electromagnet to an external circuit; the electromagnetic relay comprises two groups of output contacts, one group of contacts serves as dry contacts to form a dry contact output branch, and the other group of contacts is connected to an input signal control circuit to form a detection read-back branch. Thus, the simple and reliable pure-hardware detection circuit and method can be used, design of the self-diagnosis circuit of the digital output channel is simplified, and the circuit, device and method are suitable for self-diagnosis of wet-contact and dry-contact type digital output channels simultaneously.

The invention relates to the technical field of lightning protecting equipment, in particular to a signal lightning protector with a remote signaling function. Most of the traditional signal lightning protectors have no degraded device remote signaling output function. The products with the remote signaling output function mainly comprise gas discharge tubes and copper pieces which are soldered at low temperature but this is not a reliable way. The technical scheme of the invention is that a transient voltage suppressor TVS of a backward stage lightning protecting apparatus of a lightning protecting line and a low temperature fuse are encapsulated in parallel to form a signal lightning protecting module and remote signaling data terminals are connected at both ends of the low temperature fuse. The remote signaling data terminals, a lightning protecting earth point PE, a line input interface or a signal input terminal and a line input interface or a signal output terminal are mounted on the shell. The invention has a simple structure, realizes the combined design of different protecting interfaces and has reliable remote signaling dry contact signal output so that the maintenance personnel can monitor the work state of the lightning protector in real time remotely.

Contact assemblies, electroplating machines with contact assemblies, and methods for making contact assemblies that are used in the fabrication of microelectronic workpieces. The contact assemblies can be wet-contact assemblies or dry-contact assemblies. A contact assembly for use in an electroplating system can comprise a support member and a contact system coupled to the support member. The support member, for example, can be a ring or another structure that has an inner wall defining an opening configured to allow the workpiece to move through the support member along an access path. In one embodiment, the support member is a conductive ring having a plurality of posts depending from the ring that are spaced apart from one another by gaps. The contact system can be coupled to the posts of the support member. The contact system can have a plurality of contact members projecting inwardly into the opening relative to the support member and transversely with respect to the access path. The contact members can comprise electrically conductive biasing elements, such as fingers, that have a contact site and a dielectric coating covering at least a portion of the biasing elements. The contact members can also have a raised feature configured to engage the seed-layer on the workpiece for conducting the current to the seed-layer.

The invention belongs to the technical field of communication network equipment, and relates to emergency combined backup power supply integrated equipment for a communication base station. The equipment comprises a cabinet body, an integrated power supply, a power distribution unit and a storage battery; the cabinet body comprises a main cabinet and a battery cabinet, the main cabinet and the battery cabinet adopt an up-and-down structure or a left-and-right structure according to the customer demand, separated installation has the better flexibility, and therefore the requirements of different occasions are met; the integrated power supply comprises an AC/DC rectifier module, an inverting module and a monitoring unit, can uninterruptedly output alternating currents and direct currents (until battery discharging is finished) after an alternating current mains supply is powered off and provides the capacity of a backup power supply for the equipment; and a complete even float chargingmanagement system is arranged, can be set through a background and has an RS485 output and a dry contact output for allowing the background to remotely detect.

The invention relates to a resetting device for a protection and monitoring apparatus of a transformer station, specifically a device for the wireless resetting of a protection signal of the transformer station. The device comprises a main controller and a receiving executor. The main controller comprises a first power management unit, a first MCU main control unit, a first ISM frequency-band radio-frequency receiving and transmitting unit, a GSM/CDMA wireless data transmission unit, and an input/output interface unit. The receiving executor comprises a second power management unit, a second MCU main control unit, a second ISM frequency-band radio-frequency receiving and transmitting unit, and an exit relay unit. In order to solve the problems that the construction of a remote signal resetting mode of a conventional transformer station is difficult and the maneuverability is low, the invention proposes the resetting device. The resetting device controls the main controller through a remote control dry contact of a public measurement and control screen, and the main controller communicates with the receiving executor disposed on the protection and monitoring apparatus in a wireless mode and transmits an instruction to enable a reset circuit to be connected, thereby enabling achieving the resetting of a signal of the protection and monitoring apparatus.

The invention relates to a digital monitoring and alarm issuing equipment based on GPRS, including: a microprocessor MCU, a GPRS wireless communication module, a digital monitoring signal access module and a control module. The microprocessor MCU is connected with the rest various modules to be responsible for the realization of information processing and business logic; the MCU can timely obtain the abnormal signals which are sent by the field monitoring equipments by the mode of dry contact pulse by the digital monitoring signal access module, and the abnormal signals can be timely sent to a central intelligent control server by the GPRS wireless communication module; the server can do the reaction rapidly, the MCU obtains the control command of the server by the GPRS wireless communication module, a display screen is controlled to display the alarm information by the serial command, or a sound light alarm equipment or a third-party linkage equipment is controlled by the control module. The protocol communication with the link maintenance is carried out between the equipment and the server, so the communication errors and faults can be detected timely; and the equipment can carry out the issuance of various forms of warm information by the control module.