123results about "External parameter" patented technology

An analytical instrument having a syringe size identification functionality includes a syringe pump with syringe having size Vsyri, an electric drive, a valve downstream of the syringe, a pressure sensor between the syringe and the valve, a constant downstream volume Vc and a processor configured to control the electric drive to move the plunger from L0 for detecting pressure P1 to a pressure detection position Ld for detecting P2 using the pressure sensor. The processor is configured to calculate the theoretical pressure P2* using a modified version of Boyle's law: P2*=P1(Vsyri+Vc) / (Vsyri(1−x)+Vc) and compare the theoretical pressure P2* with the detected pressure P2. When the theoretical pressure P2* equals the detected pressure P2, the analytical system is released for use.

A pump system can include a tube disposed about a rotor. The rotor can be configured to drive fluid through the tube as the rotor rotates. The tube can be replaceable when the tube fails. The pump system can include a processor configured to determine a predicted number of revolutions of the rotor before the tube fails based on a number n of past tube failure detection (TFD) events. Each past TFD event can have a corresponding nth TFD value based at least in part on the number of revolutions the rotor had rotated before the tube failed. When n=0, the predicted number of revolutions can be set to a putative value, and when n=1, the predicted number of revolutions can be based at least in part on the first TFD value and the putative value.

A portable fluid tank system can include wireless control capabilities. The portable fluid tank system can include a fluid tank with an internal volume for fluid storage and a fluid actuation system for controlled fluid movement and pressurization. An electronics housing within the portable fluid tank system can accommodate a removable energy storage device, providing power to the actuation system. The portable fluid tank system can include a multi-state control interface, facilitating direct user interaction or remote operation via a wireless communication module. The module can receive and execute commands from a remote transmitting device, enabling remote activation and control of the fluid actuation system.

Method for controlling a compressor (10) which drives a pneumatic tool, with a maximum allowed pressure (p_max) and an associated compressed air consumption (q_max), the method comprising the step of regulating the operating pressure (p_compr) of the compressor (10), said method comprising: - if the operating pressure (p_compr) is lower than p_max minus a value (Z): controlling the compressor (10) such that the flow rate supplied by the compressor (10) is not limited; - if the operating pressure (p_compr) is higher than or equal to p_max: controlling the compressor (10) such that the flow rate supplied by the compressor (10) does not exceed the compressed air consumption (q_max) at p_max; - if the operating pressure (p_compr) is higher than p_max minus the value (Z) and is lower p_max: controlling the compressor (10) such that the operating pressure (p_compr) remains lower than p_max.

A dispensing pump includes a linear actuator mounted on a base. The linear actuator includes a drive rod having a coupler. The coupler joins the drive rod to a first end of a connecting member. A second end of the connecting member is secured to a lower base portion of the base. An attachment plate attaches a motor to a first end of an upper base portion of the base. A flag is secured to the drive rod coupler, wherein the flag moves directly with the drive rod. The flag includes a body and a calibration element. The calibration element is positionally adjustable relative to the flag body. The calibration element is adapted to activate a proximity sensor when the linear drive is in a home position. The home position is adjustable upon adjustment of the calibration member.

A hardware (e.g., a process and / or circuitry) and / or software-based controller for septic system grinder or chopper units monitors load to the unit. As the unit encounters debris, electrical and mechanical load on the unit increases. In some cases, a signal to stop the unit from grinding / chopping (including but not limited to a signal based a waste-water level) is received while the unit is under the increased load. The controller may override the stop signal and continue sending power to the unit to clear the unit from debris causing increased load. The override may cease when it is determined that the debris has been cleared, such as when it is determined that the increased mechanical and / or electrical load on the unit has decreased or returned to a target load, allowing the unit to stop. The unit may include self-configuration functionality, determining thresholds for signaling override, target load, etc.

A computer system for sump pump monitoring and repair service provider notification may include one or more processors configured to: detect that a sump pump is faulty, transmit a prompt for service quotes to a machine learning (ML) chatbot to cause the ML chatbot to: request sump pump replacement or repair services from one or more service providers, receive cost estimates from the one or more repair service providers, receive schedule availability from the one or more repair service providers, receive, from the ML chatbot, the cost estimates and the schedule availability, and communicate the cost estimates and / or the schedule availability to a user associated with the sump pump.

Provided is a technology capable of reducing pressure loss due to cooling of a compressed gas.　A gas compressor 100 comprises: a bypass passage 11 for bypassing an aftercooler 10; a bypass valve 13 provided in the bypass passage 11; a cooler bypass valve 12 provided between a connection part 19b and the aftercooler 10; an ammeter 16 for detecting a current value of a motor 1; a temperature sensor 14 for detecting a temperature of a compressed gas recovered from waste heat by a high-pressure stage waste heat recovery heat exchanger 9; a temperature sensor 22 for detecting a temperature around the gas compressor 100; and a control device 17 for opening and closing the bypass valve 13 and the cooler bypass valve 12 on the basis of the current value detected by the ammeter 16, the temperature detected by the temperature sensor 14, and the temperature detected by the temperature sensor 22.

Provided compressor control module, CCM, adapted to control an output of a variable displacement swash plate compressor, it is an object of the present invention to improve the efficiency of the compressor. The object is solved by: either directly calculate, or receive from an external source, for example the HVAC control unit, a signal indicating the desired or required output from the variable displacement swash plate compressor (30), also referred to as control target or set value, for example, but not limited to, a suction pressure, a piston stroke length, an evaporator outlet air temperature, a refrigerant mass flow and / or a work done on fluid; receive the current / actual value of the value; receive or calculate the current rotation speed and angle, with respect to the rotation axis, of the swash plate, or the current piston stroke length and its reciprocating frequency, respectively, (48) of the variable displacement swash plate compressor; receive or calculate optionally additional current values of the compressor, the air conditioning system or from the vehicle, like the discharge pressure, the crank case pressure, the delta pressure between suction pressure and crank case pressure, the evaporator outlet air temperature, the engine speed, but not limited to; determine the difference between the desired or required output from the variable displacement swash plate compressor and the current output of the variable displacement swash plate compressor; and output a signal to the valve driving unit which will adjust the angle of the swash plate (48) such that the actual output of the variable displacement swash plate compressor becomes closer to, or the same as, the desired or required output as obtained in step a), also taking into account the additional values received or calculated in c) and d).

A method for controlling a medical device. The method includes providing a conduit coupled to a pump, the pump configured to selectively provide a pressure in the conduit, a motor configured to selectively drive the pump at an operating frequency to provide the pressure in the conduit, and a controller configured to selectively drive the motor and monitor the medical device. The method includes selectively driving the motor at an indicating frequency that is different from the operating frequency when the controller identifies a value outside of a threshold for the medical device. The indicating frequency produces an indicating audible or haptic feedback that is greater than an operating audible or haptic feedback provided at the operating frequency.

In order to create a control unit that can interact with a wide variety of operating units and / or state detection units, it is proposed that the control unit comprise a basic module which has at least one processor and at least one memory for the required program code to operate the processor, as well as connections for operating units and / or state detection units that execute basic functions, and that the processor and the program code stored in the memory are designed in such a way that additional functions of an add-on module that can be connected to the basic module can also be executed with them.

The invention relates to a system and method for cooling system pump control. A method of controlling a coolant distribution unit is disclosed. The method includes: initiating, by a controller, a pump control mode; measuring, by a sensor, a differential pressure at a filter connected to the pump; determining, by the controller, whether the differential pressure is greater than a first predetermined value; when it is determined that the differential pressure is larger than the first preset value, whether the differential pressure is larger than a second preset value or not is determined, and the second preset value is larger than the first preset value; and generating a first output upon determining that the differential pressure is less than or equal to a second predetermined value.

Systems and methods for operating hydraulic fracturing units, each including a hydraulic fracturing pump to pump fracturing fluid into a wellhead and an internal combustion engine to drive the hydraulic fracturing pump, may include receiving signals indicative of operational parameters. The systems and methods also may include determining an amount of required fracturing power sufficient to perform the hydraulic fracturing operation, determining an available power to perform the hydraulic fracturing operation and a difference between the available power and the required power, and controlling operation of the hydraulic fracturing units based at least in part on the power difference. When the power difference is indicative of excess power available, the system and methods may include causing at least one of the hydraulic fracturing units to idle, and when the power difference is indicative of a power deficit, increasing a power output of at least one of the hydraulic fracturing units.

The application discloses a method and a device for controlling cylinder switching of a compressor, a unit and an air conditioning system. The method includes : determining whether the compressor needs to perform cylinder switching; if so, adjusting current operating frequency according to a system pressure difference so that both the adjusted operating frequency and the system pressure difference meet a cylinder switching condition of the compressor; and controlling the compressor to perform cylinder switching. At the moment, the system pressure difference and the operation frequency are stable, and would not interfere the compressor's maintaining of the single-cylinder or double-cylinder operation state, which guarantees the energy efficiency of the unit where the compressor is located, and improves the use experience of a user.

This electric compressor control device comprises: a control unit of an inverter which controls a motor that drives a compressor; a physical quantity calculation unit which calculates, on the basis of one or a plurality of predetermined detection values acquired from the inverter, a physical quantity that varies depending on a workload of the compressor; a number-of-revolutions acquisition unit which acquires the number of revolutions of the motor; a storage unit which stores information representing a first threshold that varies depending on the number of revolutions of the motor, and defines whether or not the physical quantity is a normal value; and a refrigerant abnormality determination unit which determines whether or not there is an abnormality in a refrigerant system by comparing the calculated physical quantity with the first threshold, depending on the acquired number of revolutions.

This invention discloses an apparatus and method for controlling a vehicle's oil pump, which can control the speed of the oil pump. The apparatus includes a controller configured to control the speed of the oil pump based on temperature information of the motor and oil, as well as speed and torque information of the motor. When the vehicle is in motion, the controller checks whether the temperature of the motor or oil is higher than or equal to a first set temperature. When the temperature of the motor or oil is higher than or equal to the first set temperature, the controller controls the speed of the oil pump to a maximum speed value. When the temperature of the motor or oil is lower than the first set temperature, the controller calculates a control speed value and controls the speed of the oil pump to the calculated control speed value.

A method includes measuring a fluid pressure of a fluid in a fluid supply line of an infusion pump. The fluid pressure includes a motor pressure and a patient pressure. The method also includes determining the patient pressure. The determining includes removing, by an adaptive filter, to remove the motor pressure from the measured fluid pressure. The removing includes generating a predicted motor pressure based on a current of the motor, generating an error signal based on a comparison between the predicted motor pressure and the measured fluid pressure, and removing the motor pressure from the measured fluid pressure when an error value indicative of the error signal is less than an error threshold. The method also includes adjusting a setting of the infusion pump based on the patient pressure. Related methods and articles of manufacture, including apparatuses and computer program products, are also disclosed.

The application discloses a water pump control method and device, household electrical appliances and a storage medium. The water pump is located in a water receiving tray of a target device and is used for draining water in the water receiving tray. The method comprises the following steps: after the water pump stops working, if the water level of the water receiving tray reaches a preset water level within a first preset time, a first time from when the water pump stops working to when the water level reaches the preset water level is obtained; and a dirty blockage prompt of the water pump is given according to the first time. Thus, the dirty blockage prompt of the water pump is given according to the time from when the water pump stops working to when the water level reaches the preset water level, so that the user can clean the water pump and other components in the water receiving tray in time, thereby prolonging the service life of the water pump and other components.

A computer system for flood monitoring and insurance provider notification, the computer system may include one or more processors configured to: detect a flood event in a structure, transmit information associated with the structure and a prompt for flood reimbursement services to a machine learning (ML) chatbot to cause the ML chatbot to file a flood reimbursement claim with an insurance provider having an insurance policy associated with the structure via telephone by converting a text output into a voice output.

An inflator includes an inflator housing, a pressure sensor operable to generate a pressure signal related to an outlet pressure of the inflator, a motor within the inflator housing, a battery pack removably coupleable to the inflator housing, and a controller electrically coupled to the motor and the battery pack. The controller is configured to receive the pressure signal from the pressure sensor, determine a rate of pressurization change based on the pressure signal, determine a static pressure value based on the rate of pressurization change, and determine a motor time delay based on a target pressure value, the static pressure value, and the rate of pressurization change. The controller is also configured to generate a control signal when the motor time delay substantially equals zero. The control signal is operable to cause power to the motor to be turned off to stop a pressurization condition of the inflator.

The present disclosure relates to systems and methods that include a multiple pump manifold to provide redundancy for use with high availability gas extraction system in industrial instrumentation. A method of operating a redundant pump assembly including operating a first pump of a plurality of pumps for an operation period; validating a second pump of the plurality of pumps at the end of the operation period of the first pump; validating a third pump of the plurality of pumps at the end of the operation period of the first pump; and, operating the third pump for the operation period, where the second pump and third pump are validated as operational.

Problem: Provide a control calibration apparatus for a variable-capacity pump that can increase the flow control accuracy of the variable-capacity pump and a method thereof. Solution: The control calibration apparatus of the variable capacitance pump includes a controller that outputs a value of current for a flow rate command of the variable-capacity pump and a flow sensor that measures a flow rate of the variable-capacity pump. The controller has a function for obtaining a quadratic function formula that is a current-to-flow characteristic for flow control of the variable-capacity pump from a first value of current when the maximum flow rate of the variable-capacity pump is measured by the flow rate sensor, a second value of current when the minimum flow rate of the variable-capacity pump is measured by the flow rate sensor, and a fixed value of current corresponding to a fixed flow rate based on the specifications of the variable-capacity pump.

A pistol grip tool includes an air pump driven by an electric motor, and a trigger operably coupled to the motor to operate the motor. The tool may also include a reservoir removably coupled to the air pump and adapted to receive a removable power source, such as a battery pack. The tool may be used to test and diagnose systems or components within a vehicle or other machine.

The invention relates to a compressor assembly (200), in particular for a commercial vehicle (1000), comprising: a plurality of cylinders (140), wherein each cylinder (140) accommodates a reciprocating piston (150), wherein the reciprocating piston (150) is driven by a crankshaft (154), and a plurality of cooling means (160), preferably a plurality of fans (162), arranged at a cylinder head region (142) of the cylinder (140), wherein one specific cooling means (160) is assigned to one cylinder (140) respectively. According to the invention, it is proposed that the compressor assembly comprises a sensor network (100), wherein the sensor network (100) comprises a plurality of temperature sensitive switches (110), wherein each temperature sensitive switch (110) is assigned to a cylinder (140), and each temperature sensitive switch (110) comprises a first electric terminal (112) and a second electric terminal (114) and is adapted to switch from a closed position (110A) to an open position (110B) in which an electric connection between the first electric terminal (112) and the second electric terminal (114) is interrupted when a switch temperature (TS) at the temperature sensitive switch (110) is reached or exceeded, and the sensor network (100) is adapted to provide an overheat signal (SO) when at least one temperature sensitive switch (110) is in the open position (110B).

A technique capable of reducing pressure loss caused by cooling of compressed gas is provided. A gas compressor 100 includes: a bypass path 11 that bypasses an aftercooler 10; a bypass valve 13 provided in the bypass path 11; a cooler bypass valve 12 provided between a connection portion 19b and the aftercooler 10; an ammeter 16 that detects a current value of a motor 1; a temperature sensor 14 that detects a temperature of compressed gas after waste heat has been recovered by a high-pressure stage waste heat recovery heat exchanger 9; a temperature sensor 22 that detects an ambient temperature around the gas compressor 100; and a control device 17 that opens and closes the bypass valve 13 and the cooler bypass valve 12 based on the current value detected by the ammeter 16, the temperature detected by the temperature sensor 14, and the temperature detected by the temperature sensor 22.

An apparatus may include a reservoir configured to hold a fluid additive, an injector element to inject the fluid additive into the primary fluid applied to a ground surface by the irrigation apparatus, a flow sensor to measure the flow of the fluid additive from the reservoir to the injector element, and a pump apparatus controller configured to maintain a rate of pumping of the fluid additive based on the output of the flow sensor. The additive pumping apparatus configured to vary a pump motor speed and thereby the rate at which the fluid additive may be pumped into the primary fluid of the fluid application assembly, the adjustment to the pumping rate being based upon the current position and the actual speed of movement of the distal-end of the outermost span of the irrigation apparatus in the field.

A method and apparatus are provided for determining the pumping rate to improve proppant placement efficiency. The method includes: acquiring proppant mesh size, bulk density, carrier fluid density and viscosity at reservoir temperature; determining the fracture length from the wellbore to the tip and average fracture width; and obtaining a preset proppant concentration. These parameters are input into a calculation model to compute the pumping rate. The method enables accurate pumping rate determination and enhances placement efficiency.

A method includes measuring a fluid pressure of fluid in a fluid supply line of an infusion pump. The fluid pressure includes a motor pressure and a patient pressure. The method also includes determining the patient pressure. The determining includes removing, by an adaptive filter, to remove the motor pressure from the measured fluid pressure. The removing includes generating a predicted motor pressure based on the current of the motor, generating an error signal based on a comparison between the predicted motor pressure and the measured fluid pressure, and removing the motor pressure from the measured fluid pressure when an error value indicative of the error signal is less than an error threshold. The method also includes adjusting, based on the patient pressure, a setting of the infusion pump. Related methods and articles of manufacture, including apparatuses and computer program products, are also disclosed.

A fluid sensor, and associated monitoring and control system, employing a cylindrical venturi to eliminate stratification of fluid passing therethrough, and a capacitive sensor operatively coupled with the cylindrical venturi to facilitate the sensing of the fluid while in the venturi.