40 results about "SWR meter" patented technology

The invention discloses a water meter calibration device and a method for water meter calibration. Respective timing / frequency metering devices of the water meter calibration device are connected with corresponding photonic samplers and pulse control circuits of a servo motor respectively; a protection sleeve is connected with the cylinder body of a hydraulic cylinder fixedly; the servo motor is fixed on the protection sleeve; a rotation shaft of the servo motor is connected with one end of a screw rod through a coupling fixedly, the other end of the screw rod is connected with a screw rod nut, and the screw rod nut is connected with one end of a piston of the hydraulic cylinder; the hydraulic cylinder is provided with a cylinder body water inlet and a cylinder body water outlet, a water tank is provided with a water tank inlet and a water tank outlet, the cylinder body water inlet is communicated with the water tank outlet through a first water inlet pipe and a water outlet pipe is arranged at the cylinder body water outlet; a second water inlet pipe is arranged at the water tank inlet, the first water inlet pipe, the second water inlet pipe and the water outlet pipe are all provided with on-off valves. According to the invention, independent timing and frequency metering are realized and instantaneous volume flow sof piston standard devices and respective in-series calibrated water meters can be obtained.

The invention proposes a network analyzer source power calibration method introducing matching correction, and the method comprises the following steps: 1, resetting a vector network analyzer; 2, carrying out the single-port calibration, and obtaining a directivity error coefficient, a source matching error coefficient and a reflection tracking error coefficient; 3, enabling a port i to be connected to a power meter; 4, recording a set value of source power and the reading of the power meter; 5, calculating a source correction factor; 6, connecting a tested part, and obtaining a real reflection coefficient of the tested part; 7, correcting the source power of the network analyzer through the reflection coefficient of the tested part; 8, completing the correction. According to the invention, the method eliminates the error of mismatching between a source and a power probe, eliminates the port mismatching error in a testing process of the tested part, improves the calibration precision, and improves the testing accuracy of a power sensitive device.

The invention belongs to the field of electronic reconnaissance, and relates to a beam scanning wave arrival direction estimation method based on a time modulation array. The number of receiving end antenna arrays is configured as N, and N radio frequency antennae are included; each array element is connected with a single-pole single-throw switch module, on-off of the switch is controlled througha digital signal processing module, modulated signals are combined into one way through a power distributor, the combined signal is amplified by a power amplifier through a down-conversion module, +2harmonic components are converted down to a base band, and the +2 harmonic components are extracted through a low-pass filter; and a power meter detects the energy output by the low-pass filter in real time and continuously records the output of the power meter, and after T<m> recording for one time, according to the maximum gain direction of an array direction diagram at the maximum output of the power meter, the incident wave direction theta<s> is obtained through table look-up. The beam scanning wave arrival direction estimation method based on the time modulation array omits a high-speeddigital sampling module, reduces the system requirements for digital signal processing chips, and reduces the system requirements for a digital processing module.

The invention relates to a magnetic induction pulse water meter. The magnetic induction pulse water meter comprises a water meter body and a cavity, wherein an inner shell base is arranged in the cavity and divides the cavity into an upper cavity and a lower cavity, a water inlet is formed at the upper part of the lower cavity and a water outlet is formed at the lower part of the lower cavity, an impeller base is arranged in the lower cavity, an impeller is rotationally connected on the impeller base, an impeller shaft is fixedly arranged on the impeller, an avoidance hole is formed on the inner shell base, the upper end of the impeller shaft penetrates through the avoidance hole to be exposed in the upper cavity, and magnetic steel is arranged at the upper end of the impeller shaft. The water meter also comprises a high magnetic conductive stator piece, a coil holder iron core and a circuit board, wherein a magnetic pole cavity is formed on the high magnetic conductive stator piece, the magnetic steel is positioned in the magnetic pole cavity, a coil is wound on the coil holder iron core, and the circuit board is connected with the coil. According to the water meter, the impeller shaft drives the magnetic steel to rotate to make the coil generate a pulse signal and convert the pulse signal into a water flow rate information, the measurement precision is high, the measurement accuracy is high when the water flow rate is low, and the leakage is low; and the water meter has the advantages of low manufacture cost, high precision, convenience in installation and the like.

Belonging to the field of electric power technology, the invention specifically relates to a wireless transmission anti-missort tester and a working method thereof. The wireless transmission anti-missort tester includes a transmission device and a receiver, the transmission device is equipped with a power supply module, an ultra narrow band frequency selection module, a transmission channel and aground wire terminal. The ultra narrow band frequency selection module and the transmission channel are in parallel connection, the ground wire terminal is connected to the ultra narrow band frequencyselection module, and the output end of the ultra narrow band frequency selection module is connected to the input end of an amplification circuit. The tester provided by the invention can carry outdetection positioning without enter a household, and omits tedious access procedure. The tester has the advantages that: the time for correction detection of a user meter is short, the work efficiencyis improved, unified inspection is carried out on a plurality of electric meters in one meter box, and the operation is simple and convenient.

The invention relates to a magnetic induction pulse measuring water meter for measuring temperature and pressure. The magnetic induction pulse measuring water meter comprises a water meter body, and further comprises a high magnetic induction stator piece, a thread stand core, a coil, an intelligent plate and a temperature-pressure sensor, wherein an upper cavity and a lower cavity are formed inside the water meter body; a water inlet is formed in the lower cavity; a water outlet is formed in the upper cavity; an impeller bottom base is arranged inside the lower cavity; an impeller top base is arranged inside the upper cavity; an impeller shaft is rotationally connected inside the impeller bottom base and the impeller top base; an impeller is fixedly arranged at the lower end of the impeller shaft; magnetic steel is fixedly arranged at the upper end of the impeller shaft coaxially; the temperature-pressure sensor is connected with the intelligent plate; the intelligent plate can be used for acquiring a pulse signal on the coil and used for converting the pulse signal into water flow information. As the magnetic steel is driven by the impeller shaft to rotate so as to generate the pulse signal from the coil, and the pulse signal is converted into water flow information, the water meter is high in measuring precision, accurate in measurement when water flow is relatively small, small in leaking loss, and beneficial to monitoring on water meter or pipeline fault as the water temperature and the water pressure can be measured by using the water meter.

The invention discloses a power meter design method and system based on a giant magnetoresistive sensor. A GMR sensor is used as a power sensor; electric power of a circuit is converted into a power supply voltage of the GMR sensor and a product of a measurement magnetic field through a proper circuit structure; and the electric power can be calculated according to an output voltage of the sensor.A control device collects the output voltage of the sensor, the output voltage is converted and then displayed on a display device, so that the circuit power can be seen visually. The GMR sensor is adopted as a power sensor, represents a novel, high-performance electrical detection component, can measure both DC electrical signals and high frequency (MHz level) AC signals, and adopts a Wheatstonebridge structure inside. The power meter overcomes defects that the traditional sensor has a narrow bandwidth and large volume and is vulnerable to temperature, has a wide band range, is easy to test, and can be widely used.

The invention discloses a power meter box. The power meter box is characterized in that an upper limiting plate is fixedly mounted at the inner top of a power meter box body, a lower limiting plate is fixedly mounted at the inner bottom of the power meter box body, an upper sliding hole is formed in the upper limiting plate, a lower sliding hole is formed in the lower limiting plate, an upper limiting shaft is mounted in the upper sliding hole, a lower limiting shaft is mounted in the lower sliding hole, a power meter mounting net plate is fixedly mounted at the left ends of the upper limiting shaft and the lower limiting shaft, the left end of a pop-up spring is fixedly mounted on the left side wall inside the power meter box body, the right end of the pop-up spring is fixedly mounted on the power meter mounting net plate, a power meter box cover is mounted on the upper limiting plate through a movable hinge, a heat-radiating air duct is mounted on the left side at the top of the power meter box body, an upper heat-radiation net is mounted at the top end of the heat-radiating air duct, and a heat-radiating fan driving shaft is mounted on the upper heat-radiation net. The power meter box disclosed by the invention is scientific and reasonable in design, simple in structure and convenient to operate.

The invention relates to a novel support and pipe section of an ultrasonic calorimeter and a water meter. The novel support and pipe section is characterized in that two ultrasonic reflectors (2) shaped like the Chinese character ZHONG are oppositely installed in a support shell with a flared opening respectively in an inlet and an outlet of two half identical structures to form an ultrasonic support, and the ultrasonic support is fixed in an ultrasonic pipe section (1) with a straight-through pipe in identical diameter.

The invention discloses a fixed structure for a power meter with efficient fixing function. A power meter is slidably connected to a sliding slot formed on a support plate, and a first fixed plate anda second fixed plate are fixedly connected to an upper end of the support plate. A first screw is connected to an internal thread of a first screw hole formed on the second fixed plate. An second fixed rod moves into a second fixed slot under the adsorption of a first magnet as a second connection plate moves since the sides close to each other of the first magnet and a second magnet attract eachother, so that the fixing effect is achieved. Due to the combination of a third screw, an abutting bar and an first fixed rod, the rotation of the third screw triggers the movement of the abutting bar by screwing the third screw, and the movement of the abutting bar triggers the movement of the first fixed rod, so that the first fixed rod enters the first fixed slot, and the fixing effect is achieved. Therefore, the device can achieve the efficient fixing effect by multistep measures.

The invention relates to a camera direct-reading telemetering water meter comprising a machinery water meter (4), a transparent plastic shield (7), and a transparent cover plate (3); the transparent plastic shield (7) and the transparent cover plate (3) are connected to form a seal cavity; the top in the seal cavity is fixed with a PCB plate (8); the transparent cover plate (3) covers on a glass of the machinery water meter (4); the camera direct-reading telemetering water meter also comprises two semicircle lock rings (1), two buckles (5) and a compression ring (6); the two semicircle lock rings (1) are fixed on a lower side of a copper shield of the machinery water meter (4) through the two buckles (5); the seal cavity formed by connecting the transparent plastic shield (7) with the transparent cover plate (3) is connected with the two semicircle lock rings (1) through the compression ring (6); the camera direct-reading telemetering water meter is compact in structure, reliable in fixation, convenient in mounting, and very suitable for on-site water meter reconstruction.

The invention provides a centre vibrating and outputting mechanism for a water meter. The centre vibrating and outputting mechanism is characterized by comprising a vibrating plate, a swing air cylinder, an unloading rail and a vibrating device. The upper end of the vibrating plate is provided with a cylinder portion. A guide rail extending upwards in a spiral mode is formed on the inner wall of the cylinder portion. A notch is formed in the guide rail. The length of the notch is smaller than the length of a centre. The power output end of the swing air cylinder is provided with a swing block. An internally-arranged groove for the single centre to be arranged is formed in the swing block. The upper end of the unloading rail is connected with an output opening of the guide rail. The lower end of the unloading rail is arranged close to the swing block. The vibrating device is arranged on the lower end face of the unloading rail. When the vibrating plate works, the centre with the forward tip can cross the notch and move forward continuously, while the centre with the backward tip falls from the notch due to the gravity. Compared with the prior art, the centre vibrating and outputting mechanism has the advantages of being high in centre output efficiency and low in failure rate.

The invention discloses a water meter or flow meter structure based on a resistance strain sensor. The structure comprises a measuring pipe section and a measuring host arranged outside the measuringpipe section, the measuring pipe section is provided with a fluid channel, a packaging part is fixedly arranged on the measuring pipe section and can deform when force is applied onto the packaging part, the resistance strain sensor is arranged in the packaging part and sealed and insulated by the packaging part, the resistance strain sensor comprises an elastic element and a resistance strain sheet, the elastic element simultaneously extends into the fluid channel along with local of the packaging part and deforms based on impact of fluid, the resistance strain sheet is arranged on the surface of the elastic element in a fitted manner, resistance of the resistance strain sheet is changed along with deformation of the elastic element, the resistance strain sheet is electrically connected with the measuring host, and a resistance value of the resistance strain sheet is transmitted to the measuring host. The structure has the advantages that a structure of a traditional mechanical watermeter is changed, and a mechanical structure of the water meter is transformed into an electronic mode, so that good bases are provided for multi-function and intelligence of the water meter and the flow meter.

The invention relates to a power meter with a two-path or multipath detector comprising at least two detector elements. Each detector element generates an output voltage. In order to detect an electrical power of an alternating electrical input signal, the sum and the difference of the output voltages of the detector elements are formed separately from one another.

The invention provides a field distribution teat system applied to a gyrotron traveling wave tube coupling structure and a test method thereof. The teat system comprises a signal source, a gyrotron traveling wave tube coupling structure to be tested, a waveguide probe and a standard WR6 waveguide and power meter, wherein the gyrotron traveling wave tube coupling structure to be tested, the waveguide probe and the standard WR6 waveguide and power meter are successively arranged in the microwave signal emission direction of the signal source. The waveguide probe and the standard WR6 waveguide and power meter are placed on a three-dimensional adjustment platform. The three-dimensional adjustment platform is adjusted to adjust a power value. One-to-one corresponding processing is carried out on the power value and the position information of the three-dimensional adjustment platform to acquire the field distribution diagram of the gyrotron traveling wave tube coupling structure. According to the invention, the field distribution of the gyrotron traveling wave tube coupling structure can be measured in the frequency range of 110GHz to 170GHz; coupling structures can be selected to satisfy the field distribution test requirement of the gyrotron traveling wave tube coupling structure; and the method is applied in the development of D-band gyrotron traveling wave tube products, has a strong practical application value, and lays a foundation for the application of terahertz products.

The invention relates to a synchronous source automatic selection circuit for a power meter. The synchronous source automatic selection circuit for the power meter comprises a power supply, an external voltage input signal, an external current input signal, a channel selection circuit, an input signal frequency regulating circuit, a phase-locked loop frequency multiplier circuit, an input signal detection circuit and a channel switching control circuit. Whether the input channel signals exist or not is judged through output level signals of a frequency selective network; the output level signal and the logical gate circuit phase calculation is used for realizing the fast, accurate and real-time control of a channel selection analog switch, so that the automatic switching and detection on the voltage channel and current channel can be realized in a hardware mode; the problems of software operation instability, not timely ADC sampling triggering and the like due to voltage channel and current channel control realization by using a conventional software mode are solved; meanwhile, the goal of automatically and preferably selecting channel signals with small distortion and stable waveform to be used as input signals of the PLL phase-locked loop can be achieved; the efficiency and accuracy of the digital power meter measuring are improved to a certain degree.

The invention discloses a water meter detection device. The device comprises a water storage tank and a supporting rack, a sliding board is connected with the supporting rack in the length direction of the supporting rack, and a water inlet base and a water outlet base used for being connected with the water storage tank are connected onto the supporting rack, clamping blocks between the water inlet base and the water outlet base are connected with the sliding board in a sliding mode, and the clamping blocks comprise connection parts and sealing parts which are used for being connected with the water meter; clamping boards are connected with the connection parts, driving rods are arranged on the connection parts, and the driving rods are connected with the clamping boards through transmission components; the transmission components are connected with the connection parts, the driving rods move in the length direction of the driving rods and drive the clamping boards to abut against orbe separated from the sliding board through the transmission components, and the clamping boards and the connection parts are arranged on two sides of the sliding board respectively, so that the aim that the clamping block can be moved conveniently is achieved.

The invention provides a water meter pipe section with a water quality detecting function. The pipe section comprises a body, the body is provided with a placing pipe section for placing a water quality monitor, the placing pipe section comprises a top, a vertical pipe section embedded inside the body and extending outward and a water blocking tile movably hinged at the pipe wall located at a farther position in the water flowing direction of the vertical pipe section, the water blocking tile is a spherical surface, and the spherical surface is disposed toward the water flowing direction; a hinge is disposed at the top end of the vertical pipe section, and the hinge is fixedly connected with the middle of the water blocking tile. It is possible to install the water quality monitor withoutmaking major changes to a water meter so as to obtain and monitor the water quality in a pipeline at any time.

The invention relates to a power meter for a micro motor. The power meter comprises a frame, a pulley, a rope, a rotation speed measuring device, pulling force sensor, an electronic scale, electromagnets and an instrument, wherein the pulley is fixed at the driving end of the motor to be metered, the rope is wound around the pulley, the pulling force sensor is limited in the upper portion of the frame, the force sensing direction of the pulling force sensor is vertically downward, the upper end of the rope is fixed to the sensing end of the pulling force sensor, the electronic scale is supported in the lower portion of the frame, the electromagnets are supported by a weighing disk of the electronic scale, and controlled by an adjustable power supply, the attraction force of the electromagnets is vertically downward, the lower end of the rope is fixed to an armature of the electromagnets, and the instrument receives output signals of the rotation speed measuring device, the pulling force sensor and the electronic scale. A measurement result of the power P of the motor is output according to the equation that P=n(GX+(G0-G)-F)(R+r), n represents to the rotation speed of the metered motor, GX represents the weight of the armature, G0 represents the weight, weighed by the electronic scale, of the electromagnets before electrification, G represents the weight, weighed by the electronic scale, of the electromagnets when being electrified in set voltage, F represents the pulling force measured by the pulling force sensor, R represents the radius of the pulley, and r represents the radius of the rope. The power meter can be used to measure the output power of the micro motor automatically.

The invention relates to the field of water meter devices, in particular to a split type waterproof controller housing of a prepaid water meter. The housing comprises a lower shell, two installation grooves are formed in the lower shell by the enclosing of separation plates, wherein a supporting column is arranged at the bottom of one of the installation grooves, a circuit board is fixed on the supporting column through a bolt, the other installation groove is used for installing batteries and guiding lines, a communication hole is formed in the position between the installation grooves, uppershells are fixed on upper portions of the installation grooves respectively, double clamping plates are arranged on the inner side circumferences of the upper shells, and the double clamping plates are matched with the separation plates. According to the housing, a structure of the water meter is compact and the water meter is convenient to assemble, and a circuit part and a guiding line connection part are divided into two areas which do not interfere with each other, so that the situation of short circuit does not occur; moreover, sealing is conducted between two independent portions and the upper shells, and by adopting the double clamping plates, separation plates can be tightly clamped, and waterproof levels can be greatly improved.