38results about How to "With fault self-diagnosis function" patented technology

The invention discloses a gear shifting manipulator of an automobile synchronizer testbed and a control device of the gear shifting manipulator. The gear shifting manipulator comprises a mounting bottom plate and a four-bar mechanism which is formed by hinge joint of a gear selecting shaft, a gear shifting rocker arm, a middle connecting bar and a gear shifting support bar, the gear selecting shaft is rotatably mounted on the mounting plate, an output shaft of a gear selecting motor is in transmission connection with the gear selecting shaft, a gear shifting air cylinder is hinged between the gear selecting shaft and the gear shifting rocker arm, a gear shifting connection bar is hinged to the upper end of the gear shifting support bar, and a tensile pressure sensor and angle sensors are arranged on the four-bar mechanism respectively. The control device comprises an MCU (micro control unit) and a human-computer interface LCD (liquid crystal display). The gear shifting manipulator is electrically connected with the MCU via the tensile pressure sensor and the angle sensors. The MCU is electrically connected with a gear shafting electromagnetic valve of the gear shifting air cylinder and the gear shifting motor. The human-computer interface LCD is in communication connection with the MCU. The gear shifting manipulator of the automobile synchronizer testbed and the control device of the gear shifting manipulator have the advantages of simplicity in operation, high positioning precision, precise controllability, stability in operation and capability of simulating a gear shifting effect of a human hand better.

The invention discloses a highly-integrated satellite centralized power supply monitoring device, wherein the system hardware architecture comprises a whole machine case, a front panel, an internal PXIe industrial personal computer and a rear panel. The front panel is provided with a keyboard, a liquid crystal screen and a whole machine switch. The internal PXIe industrial personal computer includes a controller, a PXIe bus backplane, a CPCI power supply and a function module. The highly-integrated satellite centralized power supply monitoring device solves the technical problem that a traditional power supply and distribution test device is large in size and high in weight, achieves command transmission and wired parameter measurement by program controlling an external Agilent 34980, needs to customize an Agilent 34980 dedicated test cable, and is convenient in convey and transition test. The highly-integrated satellite centralized power supply monitoring device integrates power supply, command transmission, telemetry parameter acquisition and the like, improves integration, and realizes test system miniaturization and rapid construction. The internal function modules can be modularly replaced so as to enhance product scalability.

A vertical lathe worktable control system comprises a cabinet body, a main circuit, an auxiliary control circuit and a braking circuit, wherein the main circuit, the auxiliary control circuit and the braking circuit are installed in the cabinet body. In the main circuit, alternating-current three-phase four-wire is connected with a power source input end of transducer VVVF through a combination switch QF, an input power source filter and an alternating-current contactor KM1. The output of main circuit is connected with a main electric motor through an output power source filter. A PLC programmable controller is the core of auxiliary control circuit. A braking unit comprises a transducer braking mechanism, a braking resistor box, a first transducer frequency setting potentiometer, a second transducer frequency setting potentiometer, a second transducer inching frequency setting potentiometer, a transducer frequency meter and an electromagnetic brake. The transducer VVVF is connected with the transducer braking mechanism. The vertical lathe worktable control system of the invention has the advantages of simple structure, strong reliability, convenient speed adjustment, energy consumption saving, increased operation speed and increased cutting efficiency. The vertical lathe worktable control system of the invention can be widely used on the cutting mechanical device.

The invention provides a full-automatic setting device used for artificial flowers. The full-automatic setting device comprises a frame as well as a storage mechanism, a feed mechanism, a mould pressing mechanism, a banking mechanism and an automatic control cabinet which are mounted on the frame, wherein an automatic control system composed of a programmable logic controller (PLC) is mounted in the automatic control cabinet; the PLC is adopted, automatic feeding and automatic blanking as well as mould pressing actions are realized, and the storage mechanism realizes automatic feeding and has the material shortage reminding function, so that the labor intensity of workers is eliminated; multiple stations work simultaneously, and aiming at the forming process of the artificial flowers, the mould pressing time during the setting process is long. According to the full-automatic setting device, multiple stations are adopted for mould pressing, so that the production efficiency is greatly improved, and the labor cost is reduced; all the storage mechanism, the feed mechanism, the mould pressing mechanism and the banking mechanism are connected with an automatic control system of the automatic control cabinet, so that the full-automatic operation of the whole device is realized, and workers can operate the device easily.

The invention discloses a power-saving control system of a double housing planer, which comprises a cabinet body, a main loop unit, a frequency converter VVVF control unit, a programmable controller (PLC) input and output unit, a cutter lifting and indicating lamp unit and a relay protection unit, wherein all the units are arranged in the cabinet body; a main circuit is connected with a lubricating motor RB, a vertical turret motor C, a right turret motor Y, a left turret motor Z, a cross beam lifting motor H and a cross beam clamping motor J through circuit breakers 1QF-7QF and contactors 1KM respectively; the frequency converter VVVF output is connected to a main motor M; and the PLC input and output unit consists of an input part and an output part. The power-saving control system of the double housing planer has the advantages of simple structure, strong reliability, convenient speed adjustment, energy conservation, running speed improvement and cutting efficiency improvement, and can be widely applied to cutting mechanical equipment.

The invention discloses a constant-power grinding control device and a constant-power grinding control method on basis of the vibration frequency characteristic of a grinding wheel. According to the constant-power grinding control device and the constant-power grinding control method, the characteristic value of grinding vibration of the grinding wheel is extracted after frequency analysis for carrying out recognition of grinding loads. If the change of grinding power is in an allowed range, information about a vibration curve of a rod center of a grinding wheel rod, information of the frequency analysis, information about a feeding speed, a working rotation speed and raw material of a workpiece, and other information are input into an expert database. If the change of the power is too much, a fuzzy decision making process is carried out, output delta u generates a pulse-width modulation (PWM) signal, the PWM signal controls a servo driving device, and therefore the feeding rate of a servo motor is controlled, and the purpose of constant-power grinding is achieved. The constant-power grinding control device is simple in mechanical structure, convenient to mount, flexible to dismount, good in self-adaption ability and suitable for all working conditions, little influence is caused on an inherent structure of an original grinding machine, and production efficiency is improved.

The invention provides a temperature sensor for a GWD (guide wave demultiplexer) coal mine. The temperature sensor for the GWD coal mine comprises a sensor shell, wherein the sensor shell comprises a front cover and a rear cover; and an integrated mainboard, an information acquiring module, a displaying module, a communication module, a power module, an alarming module, a handle and an aviation plug are arranged in the sensor shell. The temperature sensor for the GWD coal mine can continuously monitor underground environment temperature of the coal mine, has on-site displaying and signal outputting functions, and can convert measured temperature into signals with frequency of 200Hz to 1000Hz; the signals are transmitted to a mine safety production monitoring system through a signal outputting unit, so that a function of automatically monitoring the underground environment temperature is fulfilled; a circuitry is controlled by a singlechip; zero temperature and sensitivity of the sensor can be adjusted through infrared remote control; a fault self-checking function is fulfilled; the temperature sensor is quite convenient to use and repair; a power circuit uses a switching power supply so that power consumption of the whole temperature sensor is low; and transmitting distances of output signals of the sensor can be lengthened.

The invention discloses a gas leakage protection system and a gas leakage protection method. The gas leakage protection system comprises a gas meter and a cooker. The gas meter comprises a gas meter body. A control device, an electromagnetic stop valve and a wireless communication module are arranged in the gas meter body. The control device is in signal connection with the electromagnetic stop valve and the wireless communication module of the gas meter. The control device comprises a gas meter master control chip, a digital-to-analog conversion circuit, an electromagnetic stop valve controlcircuit, a comparison circuit and a time delay circuit. The cooker comprises a gas cooker body, and a cooker flameout protection circuit, a cooker wireless communication module and a cooker master control chip are arranged in the gas cooker body. The gas meter control device, the gas meter communication module, the electromagnetic stop valve, the cooker master control chip and the cooker communication module are connected with a power source. The gas leakage protection system is high in sensitivity and long in service life and has the beneficial effect that the fault self-inspection function is achieved; and the problems that in the prior art, a gas leakage alarm probe structure is not convenient to use, the use and replacing cost is high, and potential safety hazards are likely to be caused are solved.

The invention discloses an electrical signal control device which comprises a first instrument installed on a steam engine control chamber instrument panel, and a second instrument installed on a control cabinet of an electric main control chamber. The first instrument comprises a first single-chip microcomputer and a first instrument power supply. The input end of the first single-chip microcomputer is connected with a first function button module, the output end of the first single-chip microcomputer is connected with a plurality of first LEDs, a plurality of first LED indicating lamps and a first buzzer, and the first single-chip microcomputer is connected with a first serial interface. The second instrument comprises a second single-chip microcomputer and a second instrument power supply. The input end of the second single-chip microcomputer is connected with a second function button module, the output end of the second single-chip microcomputer is connected with a plurality of second LEDs, a plurality of second LED indicating lamps and a second buzzer, and the second single-chip microcomputer is connected with a second serial interface which performs bidirectional communication with the first serial interface. The first single-chip microcomputer and the second single-chip microcomputer are respectively provided with a standby contact. The electrical signal control device has the advantages of simple and convenient use, high flexibility, complete functions, high stability, high reliability and convenient popularization and use.

The invention relates to an anti-noise and breakpoint self-diagnosis distributed optical fiber sound sensing device, and belongs to the technical field of distributed optical fiber sensing. The device comprises an ASE broadband light source, an isolator, a 3 * 3 coupler, a delay optical fiber, a 2 * 1 coupler, a 1 * 2 optical switch, a long-distance optical fiber, a sensing optical fiber, a Faraday rotator mirror, an acousto-optic modulator, an erbium-doped optical fiber amplifier, an optical fiber circulator, a photoelectric conversion module, an I/V conversion module, an A/D conversion module, a data processing module, an upper computer, a differential amplifier, a band-pass filter, an audio transformer, a pre-amplification unit, the power amplification unit, the control unit, the sound equipment, the earphone and the single-chip microcomputer module, which are mutually connected to form a set of complete distributed optical fiber sound sensing device. The problem that a distributed optical fiber sound sensing device which can clearly restore weak sound signals and carry out breakpoint detection on laid optical fibers and is capable of resisting noise and carrying out breakpoint self-diagnosis does not exist at present is solved.

The invention relates to a ship propulsion and power equipment large-scale vibration isolation system centering monitoring device. 7 vertical displacement sensors, 3 horizontal displacement sensors, 2 longitudinal displacement sensors and rotation speed and temperature sensors are arranged between a propulsion and power equipment large-scale vibration isolation device raft frame and a hull; a programmable controller, an A/D module, a communication module and a power supply module and the like are integrated in a controller unit; and the communication module has a PC communication interface. A touch display screen, indicating lamps and a switch and the like are integrated on a panel. All of the sensors are connected with the A/D module; the A/D module converts analog signals output by the sensors into digital signals; and the programmable controller calculates the centering state of a propulsion engine under a running status and pose of the raft frame, and the state data is displayed on a touch display screen. The ship propulsion and power equipment large-scale vibration isolation system centering monitoring device is good in real-time performance, high in measurement accuracy, convenient to use and high in intelligent degree, and can realize real-time high-precision monitoring of the ship propulsion and power equipment large-scale vibration isolation device centering state and raft frame pose.

The invention discloses an intelligent firefighting controller. The intelligent firefighting controller comprises a PCU processing module, a logic module, a control module, a solenoid valve output module, a smog sensor input acquisition module, a flame detector input acquisition module, a pressure detection module, a fault detection module, a power voltage-stabilizing module, a lead acid storage battery, an external power input module, a fault signal output module, an early warning signal output module, a fire-extinguishing signal output module, a remote startup input module, a first lightning protection module, a second lightning protection module, a third lightning protection module, a wireless remote monitoring module and a far-end server. The controller transmits fault signals to the CPU processing module, and after confirmation, the fault signals are output to an onsite equipment monitoring system via the fault signal output module; and the controller can automatically/remotely manually start fire-fighting motion, has a lightning protection function, is suitable for operation in an unattended station, is stable and reliable, immune to electromagnetic interference, is low-temperature-resistant, realizes fault self diagnosis, detects an operation state in real time and can realize early fault discovery, early warning at an early stage, accurate determination and rapid fire extinguishing.

The invention provides an online performance detection method for a mineral explosionproof rubber-tired vehicle. The online detection method comprises the following steps: vehicle information registration; vehicle speedometer error detection; vehicle power performance detection; vehicle exhaust emission detection; vehicle brake performance detection; vehicle appearance and chassis four-wheel positioning detection; vehicle headlamp light intensity detection; vehicle sideslip detection; and printing of a detection report for a detected vehicle by a computer operator on a printing interface of amanagement program on a management computer. The detection method provided by the invention has the advantages that power-on self-inspection and failure screening functions are achieved; and the reliability and practicality are high.

The invention discloses an intrinsically safety type operation box used in a mine. The operation box comprises a voltage stabilizing circuit, a power supply isolation circuit, a CAN communication isolation unit, an MCU, a keyboard control chip, a font chip and a display device. The 12V intrinsically safe power supply of an external association switch box is converted into 5V, 3.3V and 1.8V voltage through the voltage stabilizing circuit in the mine used intrinsically safety type operation box to supply power for the internal circuit of the operation box. The CAN communication isolation unit, the display unit, the font chip and the keyboard control chip are connected with the MCU. The power supply isolation circuit is connected with the CAN communication isolation unit which is connected with a communication unit of the external association switch box. By using the intrinsically safe power supply for power supplying, the safety of underground work is improved, the power supply and CAN communication are separated, and the burning of the intrinsically safety type operation box can be avoided even instantaneous high voltage appears.