64 results about "Ambient water" patented technology

The utility model relates to humidity sensor technical field discloses a humidity sensor with high sensitivity, including insulating base, the insulating base is pasted with the lower humidity sensitive membrane for sucking the water resource of external environment, and the side that lower humidity sensitive membrane is away from insulating base is equipped with double -end electrode, simultaneously the side that double -end electrode is away from lower humidity sensitive membrane pastes with the upper humidity sensitive membrane for sucking the water resource of external environment. In the utility model, through setting up streamline groove on lower humidity sensitive membrane and upper humidity sensitive membrane, can increase the surface area on lower humidity sensitive membrane and upper humidity sensitive membrane, secondly increase more water molecule contact point, thereby improve the hygroscopic efficiency and humidity sensor's sensitivity, streamline groove can help guide air flow simultaneously, make the water vapor in the air more effectively contact different parts of the humidity sensing film, which helps to improve the overall hygroscopic humidity sensing speed and uniformity, ensure the accuracy of humidity sensor monitoring.

The application discloses a method for determining and distinguishing methane bubble flux and diffusion flux released by water bodies, and belongs to the field of methane flux determination in environmental water bodies, and comprises the following steps: determining the gas content of CH4 and N2O in the gas after the water body at a sampling point and surrounding atmosphere are shaken together and in the surrounding atmosphere of the water body at the sampling point, calculating the gas concentration of CH4 and N2O in the water body when the water body and the surrounding atmosphere are balanced and in the water body at the actual sampling point; determining the release flux of N2O and the total release flux of CH4 in the water body; calculating and comparing the gas mass transfer coefficients of diffusion type CH4 and total CH4; and calculating the CH4 diffusion and bubble flux. The application utilizes N2O to calculate the CH4 diffusion flux, realizes the rapid distinction of bubble type and diffusion type CH4 of water bodies, can collect and determine CH4 gas on a large scale in multiple environments, and solves the problems that CH4 determination is easily affected by the environment, time-consuming is relatively long, and it is difficult to capture occasional bubble events.

A water distribution regulation method for reclaimed waterway landscape environment based on algae risk control, comprising: according to the water source characteristics of seasonal river landscape environment water and the hydraulic characteristics of river water, based on the algae growth curve of indicative algae species, controlling algae risk with nitrogen-phosphorus ratio and water replacement rate as control indicators; based on the nitrogen-phosphorus ratio and water replacement rate, constructing a joint regulation model for water-quantity and water-quality of the river incorporating reclaimed water; based on the joint regulation model, optimizing the nitrogen-phosphorus ratio of the river water environment with the indicative algae species; based on the optimized nitrogen-phosphorus ratio, optimizing the joint regulation model; and utilizing the optimized joint regulation model to perform joint regulation of water quantity and water quality.

The application relates to the technical field of water quality detection, and discloses a water quality detection device in an extremely cold environment, which comprises an ice surface collecting vehicle and an under-ice sampler; the ice surface collecting vehicle is used for collecting snow and ice columns on the ice surface; the under-ice sampler is used for sampling liquid water under the ice; the main body of the under-ice sampler is a floating body structure and can float to the bottom of the ice surface under water; a backwash wing is arranged at the front end of the under-ice sampler and is used for providing a forward moving impact force by means of water flow; a permanent magnet is arranged in the under-ice sampler, a magnetic track is arranged in the ice layer, or a magnetic block is arranged at the bottom of the ice surface collecting vehicle; if the thickness of the ice layer is small, the ice surface collecting vehicle is used for navigation; and if the thickness of the ice layer is large, a preset magnetic track is arranged at the bottom of the water. The under-ice sampler cooperates with the ice surface collecting vehicle to work, the under-ice sampler is not provided with a driving system, the initial power is provided by the water flow under the ice, the ice surface collecting vehicle or the preset magnetic track is used for providing guidance, the path of the under-ice sampler is controlled, and the fixed-point sampling is completed.

An amphibious vehicle has a dual-mode cooling system to cool heat-generating components (e.g., engine, turbocharger) in both land and water operating modes, using air-cooling components (forced flow of ambient air) and liquid-cooling components (forced flow of ambient water) in the land and water modes respectively. The air-cooling components provide cooling of engine coolant and compressed intake air by (i) a radiator in a first loop carrying the engine coolant and (ii) an air-air charge air cooler (CAC) in a second loop carrying the compressed intake air, and the liquid-cooling components provide cooling of engine coolant and compressed intake air by (iii) a liquid-liquid heat exchanger in series with the radiator in the first loop and (iv) a liquid-air CAC in series with the air-air CAC in the second loop. Additional heat exchangers may be used for cooling a swim rudder, transmission and transfer case.

This utility model discloses a novel dehumidification and moisture-blocking breathable valve, characterized by comprising: a valve body, a top cover, a waterproof and breathable membrane, a dustproof and breathable cover, and a moisture-blocking component. This novel dehumidification and moisture-blocking breathable valve, through the design of through holes within the valve body, can effectively achieve a balance of internal and external air pressure. Under the coverage of the waterproof and breathable membrane, even in high-humidity or moisture-containing environments, moisture is difficult to penetrate into the interior, thus preventing internal components from becoming damp and damaged. Simultaneously, the moisture-absorbing factors filled in the moisture-absorbing area, combined with the breathable holes, can adsorb and regulate moisture within the system, helping to maintain the dryness and stability of the equipment's interior and improve operational reliability. Furthermore, this breathable valve adopts a modular design, with a clear overall structure and simplified components, fully considering the convenience of production, assembly, and maintenance.

This application is directed to a battery having a heating element. A connector of the battery includes a first terminal, a second terminal, and a heater terminal. One or more rechargeable battery cells are electrically coupled to the first and second terminals of the connector. The heating element is in contact with a subset of the battery cells, and includes a resistive heater path that is electrically coupled to the first and heater terminals of the connector and generates heat to warm the battery when a heater voltage is applied to the heater terminal. A waterproof material is wrapped around an exterior of the heating element and battery cells and prevents ambient water from contacting the heater element and battery cells. The waterproof material includes an opening to allow at least the first and second terminals of the connector to be electrically coupled to a logic board.

The utility model discloses an instant heating type multi-user shower vehicle, and belongs to the technical field of shower vehicles. Comprising a compartment, the interior of the compartment is sequentially divided into a clothes changing area, a shower area and an equipment area from front to back, the shower area is divided into a plurality of shower cubicles by a plurality of privacy partition plates, shower equipment is arranged in each shower cubicle, and a water purifying device, a water heater and a water tank are installed in the equipment area. The water purifying device comprises a self-suction type water inlet pump, a filtering module and a disinfection module, the water purifying device pumps an external water source, purifies the external water source and then discharges the purified water source to the water tank, and the water heater pumps water from the water tank and heats the water source to provide shower hot water for the shower equipment. The shower vehicle has the advantages that the functions of water taking, purifying, heating, showering, clothes changing and the like are integrated, the equipped water purifying system enables the shower vehicle to be not limited by environmental water sources when the shower vehicle is used, surface water can be taken nearby, convenience of outdoor showering is improved, and rapid and stable constant-temperature supply of hot water and efficient utilization of energy are achieved.

Diverter module, internal assembly and associated sanitary tap Diverter module (20), for a sanitary tap, comprising: a diverter body (21), including a diverter ambient water inlet (24), a diverter hot water inlet (25), a diverter mixed water outlet (26) and a diverter hot water outlet;and a mechanical selector (100), operating between: a main configuration, where the mechanical selector (100) connects the ambient water inlet of the diverter (24) to the mixed water outlet of the diverter (26), and the hot water inlet of the diverter (25) is connected to the hot water outlet of the diverter, and a thermal disinfection configuration, where: the mechanical selector (100) separates the ambient water inlet of the diverter (24) from the mixed water outlet of the diverter (26) and the mechanical selector (100) connects the hot water inlet of the diverter (25) to the mixed water outlet of the diverter (26), and the hot water inlet of the diverter (25) is connected to the hot water outlet of the diverter. Figure for the abstract: Figure 4;

The present application relates to a kind of ship power device multi-loop high reliability high efficiency cooling system and regulation and control method, including as heat working substance loop steam-condensate water circulation, as transfer loop fresh water circulation and as cold source loop environment water circulation, fresh water circulation is used to cool steam turbine exhaust steam, environment water circulation is used to cool fresh water;It can be realized: ① when the ship speed is lower or higher, make full use of the cooling capacity of fresh water in transfer loop, extend the time of environment water circulation pump in cold source loop stop;② when the speed of navigation is in the middle range, the flow of fresh water circulation in transfer loop is controlled to maintain stable heat exchange capacity, and "excess" self-flowing environment water is used to gradually reduce the temperature of fresh water in fresh water storage tank;③ fresh water is direct drinking water, and water quality is excellent, can keep good heat exchange capacity for a long time;④ fresh water can be used for heating water after heat absorption and temperature rise, realize partial or total utilization of heat working substance waste heat.

The present invention provides a moisture absorption device that avoids friction and impact between the moisture absorption unit and the inner wall and permeable membrane of the container, thereby reducing the risk of container wear, damage to the permeable membrane, and sealing failures. [Solution] The solution includes a flexible shell 100 whose interior constitutes a housing cavity 110, a dehumidifying unit 200 housed in the housing cavity, a permeable membrane 120 provided on the flexible shell which allows ambient moisture to pass through the permeable membrane and enter the housing cavity, an impermeable sealing membrane 130 attached to the outside of the permeable membrane, and a flexible protective pad 300 provided on the dehumidifying unit.

The embodiment of the invention relates to the field of data processing, and provides a power grid frequency control method of a small hydroelectric generating set and a related device, and the method comprises the steps: obtaining the current frequency of the small hydroelectric generating set, and obtaining a reference network access frequency interval of a small hydroelectric generating set microgrid where the small hydroelectric generating set is located; if the current frequency is not in the reference network access frequency interval, acquiring current water inflow and environment water quantity information of the small hydropower generating set; determining a reference frequency adjustment parameter according to the frequency offset between the current frequency and the reference network access frequency interval and the operation state information of the micro-grid of the small hydroelectric generating set; frequency adjustment correction parameters are determined according to the current water inflow and the environment water quantity information; performing correction processing on the reference frequency adjustment parameter by adopting the frequency adjustment correction parameter to obtain a target frequency adjustment parameter; and performing frequency adjustment on the small hydroelectric generating set by using the target frequency adjustment parameter, thereby improving the accuracy of determining the frequency adjustment parameter.

The invention relates to the technical field of fresh food fresh-keeping control, and discloses a fresh food fresh-keeping control system based on osmotic pressure cooperating with a low-temperature barrier, and the system comprises a category parameter locking module which is used for obtaining and fixing the category parameters of the current batch of fresh food; the first measurement conversion evaluation module is used for collecting environment temperature and humidity and calculating environment water activity and effective osmotic pressure difference; the priority path judgment module is used for determining a priority regulation and control path according to the inhibition degree gap symbol and the cold damage temperature window upper limit; the main variable correction module is used for adjusting the temperature and the humidity according to the priority path and rechecking the inhibition degree and the osmotic pressure difference; the sub-variable fine adjustment module is used for finely adjusting sub-variables according to the category parameters and rechecking the inhibition degree and the osmotic pressure difference; the inspection amplitude limiting module is used for re-checking the osmotic pressure difference and adjusting the temperature and humidity; and the disturbance switching checking module is used for returning to the first measurement conversion evaluation module during disturbance and checking batch parameters. According to the invention, accurate fresh-keeping control of fresh food in the low-temperature storage process is realized, the fresh-keeping period is prolonged, and the quality is kept stable.

The utility model relates to a water-cooling heat dissipation structure based on underwater electronic equipment, the water-cooling heat dissipation structure realizes liquid circulation heat dissipation through a miniature water pump, and the water-cooling heat dissipation structure comprises an electronic cabin which is a main body structure of a watertight cabin body, accommodates a liquid cooling heat dissipation device and a circuit board, is provided with an opening on the side surface, and is provided with a sealing structure; the liquid cooling heat dissipation device comprises a water cooling plate, a liquid cooling pipeline and a micro water pump, the water cooling plate is additionally arranged on a circuit board chip, the liquid cooling pipeline is welded and laid on the water cooling plate, the micro water pump is arranged at a water inlet at one end of the liquid cooling pipeline, and the other end of the liquid cooling pipeline is a water outlet. According to the water-cooling heat dissipation structure, on-site environment water serves as a direct-cooling cold source, liquid circulation heat dissipation is achieved through the micro water pump, and heat dissipation efficiency is high. The liquid cooling heat dissipation device directly utilizes a water source of a working environment where equipment is located, and the chip temperature can be effectively reduced.

An explosion-proof type automatic water quality sampling device relates to the technical field of water quality sampling equipment and comprises a control unit, a sampling unit, a sample reserving unit and an air refrigerator, the control unit comprises an explosion-proof box and a power supply and a control panel in the explosion-proof box, and the sampling unit sequentially comprises a compressed air source, an explosion-proof electromagnetic valve, a pneumatic motor and a peristaltic pump. The compressed air source, the explosion-proof electromagnetic valve and the pneumatic motor are connected through air pipes, the pneumatic motor and the peristaltic pump are connected through a coupler, the control panel controls a passage of the explosion-proof electromagnetic valve, the sample reserving unit comprises a refrigerating box and a sample reserving bottle in the refrigerating box, and the peristaltic pump is connected with a water source and the sample reserving bottle through water pipes. And the air refrigerator is respectively connected with the explosion-proof electromagnetic valve and the refrigerating box through air pipes. All devices in the sampling and refrigerating process are driven by compressed air instead of electric power, the whole machine has an anti-explosion function, is suitable for water quality sampling in dangerous scenes, and fills the technical blank of safety requirements of water quality sampling in high-risk environments.

The application relates to a moving-coil low-frequency sound source active pressure compensation closed-loop control system and method, which measures the amount of the sound source radiation surface deviating from the balance position through a displacement sensor, adjusts the gas flow direction, controls the gas amount in the sound source radiation cavity space, always maintains the radiation surface at the balance position, realizes active compensation control of the gas pressure, and makes the gas pressure in the sound source radiation cavity always equal to the ambient water pressure. The application realizes the balance between the pressure in the internal cavity of the sound source radiation surface and the external water pressure, and realizes closed control of pressure regulation through the gas circulation mode.

A modular, gravity-driven hydrokinetic energy system for submerged deployment. The system comprises a conical intake funnel, vertically aligned conduit, an inline axial-flow turbine-generator module, and a siphon-based discharge subsystem regulated by a venturi module and one-way valve. Operating independently of ambient currents, it relies on gravitational potential and hydrostatic pressure. Structural modularity allows for scaling and transport. Anchored by tensioned mooring cables and optional buoyancy modules, the system enables seabed-independent deployment. A venturi-enhanced discharge minimizes head loss, enabling continuous flow. Intake screens and vortex suppressors mitigate marine life entrainment. The design supports robust power generation in various oceanic locations and can be disassembled without fixed foundations, ensuring environmental compatibility and mechanical robustness.

The invention discloses a method for measuring and distinguishing bubbling flux and diffusion flux of methane released by a water body, which belongs to the field of methane flux measurement in environmental water bodies and comprises the following steps: measuring the gas content of CH4 and N2O in gas generated after the water body at a sampling point and the surrounding atmosphere are oscillated together and in the surrounding atmosphere of the water body at the sampling point; calculating the gas concentrations of CH4 and N2O in the water body when the water body at the sampling point and the surrounding atmosphere are balanced and in the water body at the actual sampling point; measuring the release flux of N2O and the total release flux of CH4 in the water body; calculating and comparing the gas mass transfer coefficients of the diffusion type CH4 and the total CH4; and calculating the CH4 diffusion and bubbling flux. According to the method, N2O is used for calculating the diffusion flux of CH4, rapid distinguishing of bubbling type CH4 and diffusion type CH4 in a water body is achieved, CH4 gas can be collected and measured in a large scale in multiple environments, and the problems that CH4 measurement is prone to being affected by the environment, consumed time is long, and accidental bubbling events are difficult to capture are solved.

A valve for controlling flow of ambient water into a buoyant body in an anchoring and / or payload delivery system for an underwater vehicle, the valve comprising:at least one valve inlet configured to be open, in use, to ambient water;at least one valve outlet configured to communicate with the buoyant body;a pressure balance chamber in fluid communication with one or more of the valve inlets and thereby configured to be open, in use, to ambient water;a stationary part;a moveable part arranged to be exposed at least partially to ambient water and configured to move, in use, relative to the stationary part between a first position, wherein the valve is in a closed state in which fluid communication from the valve inlet(s) to the valve outlet(s) is prevented and a second position, wherein the valve is in an open state in which fluid communication from the valve inlet(s) to the valve outlet(s) is allowed, thereby allowing ambient water to flow into the buoyant body;wherein a first part of the moveable part is exposed to ambient water and a second part of the moveable part is exposed to water within the pressure balance chamber so that the moveable part is pressure balanced such that when the valve is in the closed state there is substantially no net force on the moveable part due to the pressure of the ambient water; andwherein the valve is configured such that a movement-resisting force between the stationary part and the moveable part holds the moveable part in the first position, in use, until a valve actuation mechanism is operated to overcome the movement-resisting force and move the moveable part to the second position.

A passive hydrodynamic apparatus and method for harvesting marine biomass from ambient currents. The apparatus includes a non-sieving retention object comprising a porous 3D network of fibres having a fibre volume fraction (solidity) of less than 5% relative to an envelope volume defined by outer boundaries of the network inside the current. The fibres comprise surface functionalisation and have a fibre diameter of between about 1 micron and about 3000 microns, defining effective void spaces significantly larger than the target biomass particles. Retention is mediated by surface interactions rather than mechanical obstruction, allowing for high capture efficiency of microscopic particles (e.g., phytoplankton) with minimal drag (e.g., drag coefficient is less than 300 at 6 cm / s). A mechanical harvester featuring a sacrificial agitating element may be included to continuously recover biomass while preserving the retention fibres.

This invention discloses a method for preparing a hydrophobic modified photocatalytic-radiative cooling Janus composite membrane and its application, belonging to the fields of functional membrane materials and optoelectronic environmental protection technology. The Janus composite membrane uses polyethylene terephthalate (PET) film as a substrate, with a modified photocatalytic layer and a radiative cooling layer respectively disposed on both sides. The surface is hydrophobically modified with hexadecyltrimethoxysilane (HDTMS). The photocatalytic layer is composed of nitrogen-doped titanium dioxide, tourmaline powder, tungsten trioxide, and acrylic resin, and can catalytically degrade PM2.5 particles and the organic pollutants they carry. The radiative cooling layer is composed of micro / nano silica, hexagonal boron nitride, and alumina particles combined with resin, and can reduce the membrane surface temperature at night through radiative cooling, inducing the condensation of ambient water vapor. This invention adopts a Janus structure design with dual-sided discrete and collaborative operation, which combines the functions of photocatalytic degradation of organic pollutants, dust blocking of particulate matter, and day and night self-cleaning. It has the advantages of simple structure, no additional energy consumption, high functional integration and good long-term stability, and can be widely used in scenarios such as PM2.5 particulate dust blocking, photocatalytic degradation of organic pollutants and water purification.

The application provides an underwater gas chromatography system. It comprises a pressure-resistant shell, a water-gas separation sampling module, a carrier gas control module, a sample loading and purging module, a chromatographic separation and detection module, a waste gas solidification module, a self-correction module, a state monitoring module and an electric control and communication module. The water-gas separation sampling module is sealed and installed on the end cover of the pressure-resistant shell and provides an underwater sealed environment for the remaining modules in the internal instrument cabin together with the pressure-resistant shell. The water-gas separation membrane is used to automatically collect gaseous components to be measured from the ambient water, and the enrichment-thermal desorption-chromatographic separation-thermal conductivity detector detection is used to accurately quantify the components to be measured. The system has low gas consumption, can solidify the chromatographic waste gas, has the functions of venting and self-correction, and can meet the requirements of long-term in-situ testing underwater. The system can work by itself with the internal battery, and can also be used with the external power supply and the submarine and observation station.

The utility model relates to arid environment water resource acquisition technical field discloses a kind of devices for obtaining water in arid environment, including box, the self-cleaning solar energy storage mechanism includes solar panel, the bottom of solar panel is fixedly connected at the top of the box, the top of solar panel is slidably connected with scraper, the left side of scraper is fixedly connected with cleaning push rod at both ends, the top right side of solar panel is slidably connected with blowdown push block, the top of blowdown push block is fixedly connected with blowdown push rod.In the utility model, when device works in daytime, the self-cleaning solar energy storage mechanism located at the top of box generates electric energy by solar panel absorbing solar energy, then the electric energy generated by solar panel is transmitted to storage battery for storage through power line, so as to ensure the use of device power supply and reduce the effect of energy for water taking.

The present invention relates to the technical field of fire-fighting equipment. Disclosed are a water intake valve structure with selectable water supply, and a fire-fighting vehicle comprising same. The water intake valve structure comprises: a body (1), with a set of body water-intake ports (12) and a body water-output port (13) formed on a side of the body; a bonnet (2) sealingly fixed to an open upper portion of the body (1); a valve mechanism (3) arranged in a body cavity (11), with the bottom pivotally supported on a bottom wall (111) of the body cavity, the middle portion fitting with the sides of the body water-intake ports (12) facing the body cavity (11), and the top fitting with the bonnet (2); and a valve-position pivoting and switching mechanism (4) fitting with the top of the valve mechanism (3), wherein the set of body water-intake ports (12) comprise a left water-tank connection pipe port (121) formed on the left side of the body (1), a right water-tank connection pipe port (122) formed on the right side of the body (1), a left external water-source hose connection port (123) formed on the front left end of the body (1), and a right external water-source hose connection port (124) formed on the front right end of the body (1), and the body water-output port (13) is formed in the middle of the rear side of the body (1). The advantages lie in: realizing the shared use of water from water tanks and external water sources such as rivers, ponds and lakes, saving the water stored in the water tanks, and ensuring adequate water supply for a fire-extinguishing site.

The utility model discloses a water sample pretreatment automatic edulcoration device, including sampling cylinder and filter cylinder, sampling cylinder and water suction pump, filter cylinder and water suction pump all are connected through the water pipe between, and be equipped with connecting piece between two filter cylinders, and be equipped with drive assembly in connecting piece, be equipped with filter screen in filter cylinder, be equipped with first rotary lever rotatably in filter cylinder, and first rotary lever is equipped with scraper, and second rotary lever is sleeved on first rotary lever, be equipped with fan blade on second rotary lever, and second rotary lever is equipped with fixed link, be equipped with insertion block on fixed link, and insertion block inserts into the filter hole of filter screen, be equipped with push assembly in filter cylinder, the utility model discloses drive first rotary lever rotation through drive assembly to drive scraper rotation, and the side of filter screen in environmental water body is scraped to remove floating object from filter screen, when filter screen moves in the inside of filter cylinder under the action of push assembly, and the insertion block on fixed link cleans up the filter hole of filter screen irregularly, avoids the filter hole of filter screen and is blocked.

A ground cover having a woven backing layer overlying a nonwoven underlayer tufted with yarns to form a plurality of rows of spaced-apart tufts extending as simulated blades of grass with interstices therebetween defining paths for flow of ambient water and plurality of needle-punched strands of the nonwoven underlayer extending in the interstices, and upon installation as a ground cover receiving an infill into the interstices and the needle-punched strands moderating the flow rate of ambient water flow and reducing infill migration.

The invention belongs to the technical field of biological treatment of high-ammonia-nitrogen wastewater, and particularly relates to a device and a method for realizing efficient granulation of anaerobic ammonia oxidation sludge, the device comprises: a reaction cavity having a water inlet and a water outlet, the water inlet is used for conveying raw sewage to the reaction cavity, and the water outlet is used for discharging purified water; the water bath circulating system is arranged on the outer side of the reaction cavity and is used for heating the reaction cavity; the stirring system is arranged in the reaction cavity and is used for stirring materials in the reaction cavity; the air blowing system comprises an air supply unit, an air inlet branch pipe and two aeration discs, and is used for intermittently conveying nitrogen to the two aeration discs through the air inlet branch pipe, so that sludge on the inner wall side of the reaction cavity and liquid reach a complete mixing state, and an anaerobic environment is maintained; the water seal device is used for discharging nitrogen generated by the reaction into water so as to keep an anaerobic environment in the reaction cavity; and the three-phase separator is arranged at the top of the reaction cavity and is used for separating gas, liquid and solid generated in the reaction process.

A system for automatically controlling the flow of water in a showering environment includes an electrically controlled valve coupling a water inlet to a discharge head. A sensor array is positioned within the showering environment and has a multitude of sensors that are each directed to sense heat from a distinct location within the showering environment. A controller coupled to the valve and sensor array receives heat signals from each sensor in the array, derives a statistic from among all of the heat signals, and opens or closes the valve according to the derived statistic.

A system for automatically controlling the flow of water in a showering environment includes an electrically controlled valve coupling a water inlet to a discharge head. A sensor array is positioned within the showering environment and has a multitude of sensors that are each directed to sense heat from a distinct location within the showering environment. A controller coupled to the valve and sensor array receives heat signals from each sensor in the array, derives a statistic from among all of the heat signals, and opens or closes the valve according to the derived statistic.