A water-saving induction faucet that is easy to replace dry batteries and a method of using the same

Abstract

The present invention relates to a water-saving induction faucet which is convenient for replacing dry batteries and a method for using the water-saving induction faucet. The water-saving induction faucet comprises an inner cover, an outer cover and a lower cover. An electromagnetic valve is arranged inside the inner cover. The electromagnetic valve comprises a valve body and a valve head. The valve body is fixed to the valve head. The valve body is provided with a lower water outlet, an upper water inlet and a water flow channel. The valve head corresponds to the lower water outlet. At least one of the inner cover and the lower cover is fixed to the valve body. The lower cover is provided with a first opening. Both the inner cover and the outer cover are provided with a second opening. A controller, dry batteries, a battery holder, a status indicator light, a first distance measuring sensor and a second distance measuring sensor are arranged inside the inner cover. The inner cover is provided with a third opening. The valve head, the status indicator light, the first distance measuring sensor and the second distance measuring sensor are all electrically connected to and controlled by the controller. The battery holder is electrically connected to the controller. The faucet has the advantages of small size, convenient assembly and disassembly of dry batteries and adjustable sensing distance for different environments.

Description

Technical Field

[0001] The present invention relates to the technical field of faucets, and more particularly to a water-saving induction faucet which is convenient for replacing dry batteries and a method for using the same. Background Art

[0002] In daily life, in order to save water and protect the environment, prevent bacterial cross infection, and reduce the trouble of repeatedly adjusting the working state of the faucet, people often install quick-connect induction faucets on existing mechanical switch faucets. At present, most quick-connect induction faucets are either not small enough or the USB charging interface is easily corroded, resulting in a short product life. Therefore, there is still a need to further improve the structure and power supply system of the quick-connect induction faucet to solve the above-mentioned shortcomings. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a water-saving induction faucet which is easy to replace dry batteries, and a method for using the water-saving induction faucet, in view of the above-mentioned defects of the prior art.

[0004] The technical solution adopted by the present invention to solve the above technical problems is:

[0005] On the one hand, a water-saving induction faucet which is convenient for replacing dry batteries is provided, comprising an inner cover, an outer cover sleeved on the inner cover, and a lower cover detachably connected to the outer cover; the lower cover is adapted to the opening of the outer cover; wherein a solenoid valve is arranged inside the inner cover; the solenoid valve comprises a valve body in a frame shape, and a valve head located in a hollow area of ​​the valve body; the valve body is fixed to the valve head; the valve body is provided with a lower water outlet, an upper water inlet connected to the faucet water outlet, and a water flow channel connected to the lower water outlet and the upper water inlet; the valve head corresponds to the lower water outlet; at least one of the inner cover and the lower cover is fixed to the valve body; the lower cover is provided with a first opening for exposing the lower water outlet; the inner cover and the outer cover are both provided with a second opening for exposing the upper water inlet;

[0006] The inner cover is provided with a controller, a dry battery, a battery holder for mounting the dry battery, a status indicator light, a first distance measuring sensor with a detection end facing directly downward, and a second distance measuring sensor with a detection end perpendicular to the axial direction of the inner cover; the side surface of the inner cover is provided with a third opening for exposing the dry battery on the battery holder; the valve head, the status indicator light, the first distance measuring sensor and the second distance measuring sensor are all electrically connected to and controlled by the controller; the battery holder is electrically connected to the controller; the status indicator light is used to indicate the working status of the first distance measuring sensor, the second distance measuring sensor and the dry battery.

[0007] On the other hand, a method for using a water-saving induction faucet is provided, based on the above-mentioned water-saving induction faucet that is easy to replace dry batteries, wherein the method comprises the following steps:

[0008] After power-on, the first distance measuring sensor performs multiple detections to obtain multiple first sensing distance reference values ​​corresponding to the multiple detections; the second distance measuring sensor performs multiple detections to obtain multiple second sensing distance reference values ​​corresponding to the multiple detections;

[0009] After the detection is completed, the first sensing distance reference value with the largest value is set as the sensing distance of the first distance measuring sensor, and the second sensing distance reference value with the largest value is set as the sensing distance of the second distance measuring sensor;

[0010] After completing the setting of the sensing distance, if the distance currently measured by the first ranging sensor is less than the set sensing distance, the controller controls the solenoid valve to open, otherwise, the controller controls the solenoid valve to close; if the distance currently measured by the second ranging sensor is less than the set sensing distance, the controller controls the solenoid valve to open, otherwise, the controller controls the solenoid valve to close.

[0011] The beneficial effects of the present invention are:

[0012] Small size. Specifically, the two ends of the valve body are the lower water outlet and the upper water inlet, the two sides are water flow channels, and the hollow area is the installation space of the valve head. The overall layout is good, making the product more compact.

[0013] The dry battery is easy to disassemble and assemble. Specifically, when the dry battery needs to be replaced, the outer cover and the lower cover are disassembled; then the outer cover is removed, and the dry battery can be taken out and put in from the third opening, which is convenient for replacement;

[0014] The sensing distance can be adjusted for different environments. Specifically, due to different usage environments, the depth and lighting conditions of the sinks in the environment are different. If the same sensing distance is always set, when switching from a deeper sink to a shallower sink, false triggering may occur. For example, when the distance between the ranging sensor and the original sink is 50cm, it is required that an object enters the 50cm range to control the solenoid valve to open; after that, when it is switched to another environment, the distance between the ranging sensor and the next sink is 30cm. If the original sensing distance is used, the next sink will trigger the solenoid valve to open. The working process of this faucet is as follows:

[0015] After power-on, the first distance measuring sensor performs multiple detections to obtain multiple first sensing distance reference values ​​corresponding to the multiple detections; the second distance measuring sensor performs multiple detections to obtain multiple second sensing distance reference values ​​corresponding to the multiple detections;

[0016] After the detection is completed, the first sensing distance reference value with the largest value is set as the sensing distance of the first distance measuring sensor, and the second sensing distance reference value with the largest value is set as the sensing distance of the second distance measuring sensor;

[0017] After completing the setting of the sensing distance, if the current distance measured by the first distance measuring sensor is less than the set sensing distance, the controller controls the solenoid valve to open, otherwise, the controller controls the solenoid valve to close; if the current distance measured by the second distance measuring sensor is less than the set sensing distance, the controller controls the solenoid valve to open, otherwise, the controller controls the solenoid valve to close. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the present invention will be further described below in conjunction with the accompanying drawings and embodiments. The drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work:

[0019] Figure 1 This is an exploded view of a water-saving induction faucet that is convenient for replacing dry batteries provided in the first embodiment of the present invention;

[0020] Figure 2 It is a cross-sectional view of a water-saving induction faucet that is convenient for replacing dry batteries provided in the first embodiment of the present invention;

[0021] Figure 3 This is an overall view of a water-saving induction faucet that is convenient for replacing dry batteries provided in the first embodiment of the present invention;

[0022] Figure 4 This is an overall view of a water-saving induction faucet that is easy to replace dry batteries, provided in the first embodiment of the present invention. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the following will be described clearly and completely in combination with the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are partial embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work belong to the protection scope of the present invention.

[0024] Embodiment 1

[0025] The embodiment of the present invention provides a water-saving induction faucet which is convenient for replacing dry batteries. Figure 1 -to Figure 4As shown, it includes an inner cover 10, an outer cover 11 sleeved on the inner cover 10, and a lower cover 12 detachably connected to the outer cover 11; the lower cover 12 is adapted to the opening of the outer cover 11; a solenoid valve 13 is arranged inside the inner cover 10; the solenoid valve 13 includes a frame-shaped valve body 14 and a valve head 15 located in the hollow area of ​​the valve body 14; the valve body 14 is fixed to the valve head 15; the valve body 14 is provided with a lower water outlet 180, an upper water inlet 181 connected to the water outlet of the faucet, and a water flow channel 182 connecting the lower water outlet 180 and the upper water inlet 181; the valve head 15 corresponds to the lower water outlet 180; at least one of the inner cover 10 and the lower cover 12 is fixed to the valve body 14; the lower cover 12 is provided with a first opening 183 for exposing the lower water outlet 180; the inner cover 10 and the outer cover 11 are both provided with a second opening 184 for exposing the upper water inlet 181;

[0026] The inner cover 10 is provided with a controller 16, a dry battery 17, a battery holder 18 for installing the dry battery 17, a status indicator light 19, a first distance measuring sensor 110 with a detection end facing directly downward, and a second distance measuring sensor 111 with a detection end perpendicular to the axial direction of the inner cover 10; the side surface of the inner cover 10 is provided with a third opening 185 for exposing the dry battery 17 on the battery holder 18; the valve head 15, the status indicator light 19, the first distance measuring sensor 110 and the second distance measuring sensor 111 are all electrically connected to and controlled by the controller 16; the battery holder 18 is electrically connected to the controller 16; the status indicator light 19 is used to indicate the working status of the first distance measuring sensor 110, the second distance measuring sensor 111 and the dry battery 17. The faucet has the following advantages:

[0027] Small size. Specifically, the two ends of the valve body 14 are the lower water outlet 180 and the upper water inlet 181, the two sides are water flow channels 182, and the hollow area is the installation space of the valve head 15. The overall layout is good, making the product more compact.

[0028] The dry battery 17 is easy to disassemble and assemble. Specifically, when the dry battery 17 needs to be replaced, the outer cover 11 and the lower cover 12 are disassembled; then the outer cover 11 is removed, and the dry battery 17 can be taken out and put in from the third opening 185, which is convenient for replacement;

[0029] The sensing distance can be adjusted for different environments. Specifically, due to different usage environments, the depth and lighting conditions of the sinks in the environment are different. If the same sensing distance is always set, when switching from a deeper sink to a shallower sink, false triggering may occur. For example, when the distance between the ranging sensor and the original sink is 50cm, it is required that an object enters the 50cm range to control the solenoid valve to open; after that, when it is switched to another environment, the distance between the ranging sensor and the next sink is 30cm. If the original sensing distance is used, the next sink will trigger the solenoid valve to open. The working process of this faucet is as follows:

[0030] After power-on, the first distance measuring sensor 110 performs multiple detections to obtain multiple first sensing distance reference values ​​corresponding to the multiple detections; the second distance measuring sensor 111 performs multiple detections to obtain multiple second sensing distance reference values ​​corresponding to the multiple detections;

[0031] After the detection is completed, the first sensing distance reference value with the largest value is set as the sensing distance of the first distance measuring sensor 110, and the second sensing distance reference value with the largest value is set as the sensing distance of the second distance measuring sensor 111;

[0032] After completing the setting of the sensing distance, if the current distance measured by the first ranging sensor 110 is less than the set sensing distance, the controller 16 controls the solenoid valve 13 to open, otherwise, the controller 16 controls the solenoid valve 13 to close; if the current distance measured by the second ranging sensor 111 is less than the set sensing distance, the controller 16 controls the solenoid valve 13 to open, otherwise, the controller 16 controls the solenoid valve 13 to close.

[0033] The structure of the valve head 15 has been disclosed in the Chinese invention patent publication with publication number CN104565502A, and will not be described in detail here.

[0034] Therefore, the water faucet has the advantages of small size, convenient disassembly and assembly of dry batteries, and adjustable sensing distance according to different environments.

[0035] like Figure 1 -to Figure 4 As shown, the inner wall of the upper water inlet 181 is provided with a first internal thread 186 for connecting to the faucet outlet, which is convenient for quick disassembly and assembly; the inner wall of the lower water outlet 180 is provided with a second internal thread 187 for connecting to the bubbler, which is easy to install and saves time and effort.

[0036] like Figure 1 -to Figure 2 As shown, the valve body 14 includes a water inlet end 112, a connecting section 113 and a water outlet end 114 arranged in sequence from top to bottom; the water inlet end 112 and the water outlet end 114 are both detachably connected to the connecting section 113; the water inlet end 112 is fixed to the inner cover 10; the water outlet end 114 is fixed to the lower cover 12, and the valve body 14 is divided into three parts. When replacing parts, only the damaged part can be replaced;

[0037] The upper water inlet 181 and the lower water outlet 180 are respectively arranged on the water inlet end 112 and the water outlet end 114; the water flow channel 182 includes a transverse first sub-channel 188, two groups of second sub-channels 189 respectively connected to the two ends of the first sub-channel 188, and two groups of third sub-channels 1810 corresponding to the two groups of second sub-channels 189; the first sub-channel 188 to the third sub-channel 1810 are arranged in sequence from top to bottom; the second sub-channel 189 is L-shaped, and the third sub-channel 1810 is inverted L-shaped; the third sub-channel 1810 is used to connect the second sub-channel 189 and the lower water outlet 180; the first sub-channel 188 is located on the side of the water inlet end 112 facing the connecting section 113; the second sub-channel 189 and the third sub-channel 1810 are both located on the connecting section 113; the second sub-channel 189 and the third sub-channel 1810 are both connected to the lower surface of the connecting section 113, which is convenient for processing and reduces costs.

[0038] like Figure 2 As shown, one end of the connecting section 113 is provided with a first waterproof rubber ring 115 adapted to the water inlet end 112 and a first mounting groove adapted to the first waterproof rubber ring 115, and the other end is provided with a second waterproof rubber ring 116 adapted to the water outlet end 114 and a second mounting groove adapted to the second waterproof rubber ring 116, so that the overall sealing of the valve body 14 is better, avoiding the water flow in the valve body 14 from leaking out, and making the controller 16 not easily affected by moisture.

[0039] like Figure 1 -to Figure 2 As shown, the outer surface of the inner cover 10 is provided with two sets of third waterproof rubber rings 117 distributed on the upper and lower sides of the third opening 185; the outer cover 11 and the inner cover 10 cooperate to squeeze the third waterproof rubber ring 117, so that the dry battery 17 is not easily affected by moisture, which is beneficial to extend the service life of the dry battery 17.

[0040] like Figure 1 As shown, the interior of the outer cover 11 is also provided with a plurality of screws 118 for fixing the battery holder 18 and the inner cover 10; the side surfaces opposite to the inner cover 10 and the battery holder 18 are both provided with a plurality of threaded holes corresponding to the plurality of screws 118; the threaded holes on the inner cover 10 are through holes, which are fixed by screws 118, and are convenient for disassembly and assembly; a fourth waterproof rubber ring 119 is fixed on the battery holder 18; the battery holder 18 and the inner cover 10 cooperate to squeeze the fourth waterproof rubber ring 119, and when the battery holder 18 and the inner cover 10 are locked, the fourth waterproof rubber ring 119 can cooperate with the battery holder 18 to prevent the dry battery 17 from getting damp, and can also avoid scratching the inner cover 10.

[0041] like Figure 1 -to Figure 2As shown, the lower cover 12 includes an inner cover 120 and an outer cover 121 which are arranged in sequence from top to bottom; the inner cover 120 is adapted to the inner cover 10; the outer cover 121 is adapted to the outer cover 11; the inner cover 10 and the inner cover 120 are both fixed to the valve body 14; the outer cover 121 is fixed with a first buckle 122, and a plurality of groups of second buckles 123 which are adapted to the inner cover 120; the inner wall of the outer cover 11 is provided with a slot (not shown in the figure) adapted to the first buckle 122, which is fixed with the buckle for easy disassembly and assembly; a fifth waterproof rubber ring 124 is provided at the water inlet end of the valve body 14; the inner cover 10 and the valve body 14 cooperate to squeeze the fifth waterproof rubber ring 124.

[0042] Embodiment 2

[0043] An embodiment of the present invention provides a method for using a water-saving induction faucet, the method comprising the following steps:

[0044] Step S1: After power-on, the first distance measuring sensor performs multiple detections to obtain multiple first sensing distance reference values ​​corresponding to the multiple detections; the second distance measuring sensor performs multiple detections to obtain multiple second sensing distance reference values ​​corresponding to the multiple detections.

[0045] Preferably, the first distance measuring sensor and the second distance measuring sensor have the same number of detections, and are no less than 3 times, so as to improve the accuracy of the sensing distance setting;

[0046] The first distance measuring sensor and the second distance measuring sensor perform detection at the same time. Each time a detection is completed, the controller controls the status indicator light to flash once, so that the user knows that the first distance measuring sensor and the second distance measuring sensor are in the detection state at this time through the flashing of the status indicator light;

[0047] When the difference between the currently measured first sensing distance reference value and the last measured first sensing distance reference value is greater than the preset first threshold, or the difference between the currently measured second sensing distance reference value and the last measured second sensing distance reference value is greater than the preset second threshold, the detection interval time of the first ranging sensor and the first ranging sensor is extended. By extending the total detection time, the object shaking in front of the water nozzle is provided with time to retreat, so as to improve the accuracy of the sensing distance setting.

[0048] As an example:

[0049] The first distance measuring sensor and the second distance measuring sensor are detected 8 times, and the status indicator light flashes 8 times accordingly, so that the user can know that the first distance measuring sensor and the second distance measuring sensor are in the detection state at this time through the flashing of the status indicator light;

[0050] The data obtained by the first distance sensor after 8 detections are 30cm, 25cm, 28cm, 30cm, 30cm, 25cm, 28cm, and 30cm. The data less than 30cm is due to the fact that an object was shaking in front of the faucet during the detection period, while the data of 30cm is the distance between the first distance sensor and the corresponding water tank when no object was shaking. Therefore, 30cm is taken as the sensing distance of the first distance sensor.

[0051] The data obtained by the second distance sensor after 8 tests are 28cm, 25cm, 23cm, 28cm, 28cm, 28cm, 28cm, 28cm, 28cm; the data less than 28cm is due to the fact that there is an object shaking in front of the faucet during the test, while the data of 28cm is the distance between the second distance sensor and the corresponding water tank when there is no object shaking. Therefore, 28cm is taken as the sensing distance of the second distance sensor.

[0052] Step S2: After the detection is completed, the first sensing distance reference value with the largest value is set as the sensing distance of the first distance measuring sensor, and the second sensing distance reference value with the largest value is set as the sensing distance of the second distance measuring sensor.

[0053] Preferably, after the step in which the distance currently measured by the first distance measuring sensor is less than the set sensing distance and the controller controls the solenoid valve to open:

[0054] If the distances measured by the first distance measuring sensor within a certain period of time are all less than the set sensing distance, and the measured distances are the same, the controller controls the solenoid valve to close;

[0055] If the distances measured by the first distance measuring sensor within a certain period of time are all smaller than the set sensing distance, and at least two measured distances are different, the controller controls the solenoid valve to close.

[0056] Preferably, after the step in which the distance currently measured by the second distance measuring sensor is less than the set sensing distance and the controller controls the solenoid valve to open:

[0057] If the distances measured by the second distance measuring sensor are all less than the set sensing distance within a certain period of time, and the measured distances are the same, the controller controls the solenoid valve to close;

[0058] If the distances measured by the second distance measuring sensor are all smaller than the set sensing distance within a certain period of time, and at least two of the measured distances are different, the controller controls the solenoid valve to close.

[0059] Step S3: After completing the setting of the sensing distance, if the current distance measured by the first ranging sensor is less than the set sensing distance, the controller controls the solenoid valve to open, otherwise, the controller controls the solenoid valve to close; if the current distance measured by the second ranging sensor is less than the set sensing distance, the controller controls the solenoid valve to open, otherwise, the controller controls the solenoid valve to close.

[0060] Preferably, after step S3: if the distance currently measured by the first distance measuring sensor is less than the set sensing distance, the status indicator light is off; if the distance currently measured by the second distance measuring sensor is less than the set sensing distance, the status indicator light is off.

[0061] When the difference between the currently measured first sensing distance reference value and the last measured first sensing distance reference value is greater than a preset first threshold, or the difference between the currently measured second sensing distance reference value and the last measured second sensing distance reference value is greater than a preset second threshold, the detection interval time of the first ranging sensor and the second ranging sensor is extended.

[0062] Step S2: After the detection is completed, the first sensing distance reference value with the largest value is set as the sensing distance of the first distance measuring sensor, and the second sensing distance reference value with the largest value is set as the sensing distance of the second distance measuring sensor.

[0063] Preferably, after the step in which the distance currently measured by the first distance measuring sensor is less than the set sensing distance and the controller controls the solenoid valve to open:

[0064] If the distances measured by the first distance measuring sensor within a certain period of time are all less than the set sensing distance, and the measured distances are the same, the controller controls the solenoid valve to close;

[0065] If the distances measured by the first distance measuring sensor are all smaller than the set sensing distance within a certain period of time, and at least two measured distances are different, the controller controls the solenoid valve to close.

[0066] Preferably, after the step in which the distance currently measured by the second distance measuring sensor is less than the set sensing distance and the controller controls the solenoid valve to open:

[0067] If the distances measured by the second distance measuring sensor are all less than the set sensing distance within a certain period of time, and the measured distances are the same, the controller controls the solenoid valve to close;

[0068] If the distances measured by the second distance measuring sensor are all smaller than the set sensing distance within a certain period of time, and at least two of the measured distances are different, the controller controls the solenoid valve to close.

[0069] Step S3: After completing the setting of the sensing distance, if the current distance measured by the first ranging sensor is less than the set sensing distance, the controller controls the solenoid valve to open, otherwise, the controller controls the solenoid valve to close; if the current distance measured by the second ranging sensor is less than the set sensing distance, the controller controls the solenoid valve to open, otherwise, the controller controls the solenoid valve to close.

[0070] Preferably, after step S3: if the distance currently measured by the first distance measuring sensor is less than the set sensing distance, the status indicator light is off; if the distance currently measured by the second distance measuring sensor is less than the set sensing distance, the status indicator light is off.

[0071] Preferably, the first distance measuring sensor and the second distance measuring sensor both have two states: low-speed scanning and high-speed scanning. Initially, it is in the low-speed scanning state, and the scanning cycle is 760ms; when an object enters the sensing area, it switches to the high-speed scanning state, and the scanning cycle is 380ms. If no object enters the sensing area within the interval of 30 minutes, the first distance measuring sensor and the second distance measuring sensor switch from high-speed scanning to low-speed scanning. During low-speed scanning, the controller works in a micro-power consumption state, which is conducive to saving power.

[0072] Embodiment 3

[0073] The embodiment of the present invention provides a method for using a water-saving induction faucet, and the same points as those in the second embodiment are not repeated here, except that:

[0074] Before step S3, the opening time of the solenoid valve is set;

[0075] After the distance currently measured by the first distance measuring sensor is less than the set sensing distance, the controller controls the solenoid valve to open:

[0076] During the opening of the solenoid valve, the first distance measuring sensor performs detection again. If the measured distance is less than the set sensing distance, the controller controls the solenoid valve to close; otherwise, the solenoid valve remains open until the opening time is reached;

[0077] After the distance currently measured by the second distance measuring sensor is less than the set sensing distance, the controller controls the solenoid valve to open:

[0078] During the opening of the solenoid valve, the second distance measuring sensor detects again. If the measured distance is less than the set sensing distance, the controller controls the solenoid valve to close; otherwise, the solenoid valve remains open until the opening time is reached;

[0079] The method also includes: when the voltage of the dry cell is less than a preset minimum value, the controller turns off the first distance measuring sensor and the second distance measuring sensor, and controls the state indicator light to flash.

[0080] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the appended claims of the present invention.

Claims

1. A water-saving induction faucet that is easy to replace dry batteries, comprising an inner cover, an outer cover sleeved on the inner cover, and a lower cover detachably connected to the outer cover; the lower cover is adapted to the opening of the outer cover; characterized in that: The inner cover is provided with a solenoid valve inside; the solenoid valve comprises a valve body in a frame shape, and a valve head located in a hollow area of ​​the valve body; the valve body is fixed to the valve head; the valve body is provided with a lower water outlet, an upper water inlet connected to the water outlet of the faucet, and a water flow channel connected to the lower water outlet and the upper water inlet; the valve head corresponds to the lower water outlet; at least one of the inner cover and the lower cover is fixed to the valve body; the lower cover is provided with a first opening for exposing the lower water outlet; the inner cover and the outer cover are both provided with a second opening for exposing the upper water inlet; The inner cover is provided with a controller, a dry battery, a battery holder for mounting the dry battery, a status indicator light, a first distance measuring sensor with a detection end facing directly downward, and a second distance measuring sensor with a detection end perpendicular to the axial direction of the inner cover; the side surface of the inner cover is provided with a third opening for exposing the dry battery on the battery holder; the valve head, the status indicator light, the first distance measuring sensor and the second distance measuring sensor are all electrically connected to and controlled by the controller; the battery holder is electrically connected to the controller; the status indicator light is used to indicate the working status of the first distance measuring sensor, the second distance measuring sensor and the dry battery.

2. A water-saving induction faucet that is easy to replace dry batteries according to claim 1, characterized in that: The inner wall of the upper water inlet is provided with a first internal thread for connecting to a water outlet of a faucet; the inner wall of the lower water outlet is provided with a second internal thread for connecting to a bubbler.

3. A water-saving induction faucet that is easy to replace dry batteries according to claim 1, characterized in that: The valve body comprises a water inlet end, a connecting section and a water outlet end arranged in sequence from top to bottom; the water inlet end and the water outlet end are both detachably connected to the connecting section; the water inlet end is fixed to the inner cover; the water outlet end is fixed to the lower cover; The upper water inlet and the lower water outlet are respectively arranged on the water inlet end and the water outlet end; the water flow channel includes a transverse first sub-channel, two groups of second sub-channels respectively connected to the two ends of the first sub-channel, and two groups of third sub-channels corresponding to the two groups of second sub-channels one by one; the first sub-channel to the third sub-channel are arranged in sequence from top to bottom; the second sub-channel is L-shaped, and the third sub-channel is in an inverted L-shape; the third sub-channel is used to connect the second sub-channel and the lower water outlet; the first sub-channel is located on the side of the water inlet end facing the connecting section; the second sub-channel and the third sub-channel are both located on the connecting section; the second sub-channel and the third sub-channel are both connected to the lower surface of the connecting section.

4. A water-saving induction faucet that is easy to replace dry batteries according to claim 3, characterized in that: One end of the connecting section is provided with a first waterproof rubber ring adapted to the water inlet end and a first mounting groove adapted to the first waterproof rubber ring, and the other end is provided with a second waterproof rubber ring adapted to the water outlet end and a second mounting groove adapted to the second waterproof rubber ring.

5. The water-saving induction faucet that is easy to replace dry batteries according to claim 1 is characterized in that: The outer surface of the inner cover is provided with two groups of third waterproof rubber rings distributed on the upper and lower sides of the third opening; the outer cover and the inner cover cooperate to squeeze the third waterproof rubber rings.

6. A water-saving induction faucet that is easy to replace dry batteries according to claim 1, characterized in that: The interior of the outer cover is also provided with a plurality of sets of screws for fixing the battery holder and the inner cover; the side surfaces opposite to each other of the inner cover and the battery holder are provided with a plurality of threaded holes corresponding one to one with the plurality of sets of screws; the threaded holes on the inner cover are through holes; a fourth waterproof rubber ring is fixedly provided on the battery holder; the battery holder and the inner cover cooperate to squeeze the fourth waterproof rubber ring.

7. A water-saving induction faucet that is easy to replace dry batteries according to claim 1, characterized in that: The lower cover includes an inner cover and an outer cover which are arranged in sequence from top to bottom; the inner cover is adapted to the inner cover; the outer cover is adapted to the outer cover; the inner cover and the inner cover are both fixed to the valve body; the outer cover is provided with a first buckle and a plurality of second buckles which are adapted to the inner cover; the inner wall of the outer cover is provided with a slot which is adapted to the first buckle; a fifth waterproof rubber ring is provided at the water inlet end of the valve body; the inner cover and the valve body cooperate to squeeze the fifth waterproof rubber ring.

8. A method for using a water-saving induction faucet, based on the water-saving induction faucet that is easy to replace dry batteries as claimed in any one of claims 1 to 7, characterized in that: The steps include: After power-on, the first distance measuring sensor performs multiple detections to obtain multiple first sensing distance reference values ​​corresponding to the multiple detections; The second distance measuring sensor performs multiple detections to obtain multiple second sensing distance reference values ​​corresponding to the multiple detections; After the detection is completed, the first sensing distance reference value with the largest value is set as the sensing distance of the first distance measuring sensor, and the second sensing distance reference value with the largest value is set as the sensing distance of the second distance measuring sensor; After completing the setting of the sensing distance, if the distance currently measured by the first ranging sensor is less than the set sensing distance, the controller controls the solenoid valve to open, otherwise, the controller controls the solenoid valve to close; if the distance currently measured by the second ranging sensor is less than the set sensing distance, the controller controls the solenoid valve to open, otherwise, the controller controls the solenoid valve to close.

9. The method for using a water-saving induction faucet according to claim 8, characterized in that: In the steps of testing after power-on: The detection times of the first distance measuring sensor and the second distance measuring sensor are the same and not less than 3 times; The first distance measuring sensor and the second distance measuring sensor perform detection simultaneously, and each time a detection is completed, the controller controls the status indicator light to flash once; When the difference between the currently measured first sensing distance reference value and the last measured first sensing distance reference value is greater than a preset first threshold, or the difference between the currently measured second sensing distance reference value and the last measured second sensing distance reference value is greater than a preset second threshold, extending the detection interval time of the first ranging sensor and the second ranging sensor; The method further comprises: After completing the setting of the sensing distance, if the current distance measured by the first distance measuring sensor is less than the set sensing distance, the status indicator light is off; if the current distance measured by the second distance measuring sensor is less than the set sensing distance, the status indicator light is off; If the distance currently measured by the first distance measuring sensor is less than the set sensing distance, after the step of the controller controlling the solenoid valve to open, the method further includes: If the distances measured by the first distance measuring sensor within a certain period of time are all smaller than the set sensing distance, and the measured distances are all the same, the controller controls the solenoid valve to close; If the distances measured by the first distance measuring sensor within a certain period of time are all less than the set sensing distance, and at least two measured distances are different, the controller controls the solenoid valve to close; If the distance currently measured by the second distance measuring sensor is less than the set sensing distance, after the step of the controller controlling the solenoid valve to open, the method further includes: If the distances measured by the second distance measuring sensor within a certain period of time are all smaller than the set sensing distance, and the measured distances are all the same, the controller controls the solenoid valve to close; If the distances measured by the second distance measuring sensor within a certain period of time are all smaller than the set sensing distance, and at least two measured distances are different, the controller controls the solenoid valve to close.

10. The method for using a water-saving induction faucet according to claim 8, characterized in that: If the distance currently measured by the first distance measuring sensor is less than the set sensing distance, before the step of the controller controlling the solenoid valve to open, the method further includes: Setting the opening time of the solenoid valve; If the distance currently measured by the first distance measuring sensor is less than the set sensing distance, after the step of the controller controlling the solenoid valve to open, the method further includes: During the opening of the solenoid valve, the first distance measuring sensor performs detection again. If the measured distance is less than the set sensing distance, the controller controls the solenoid valve to close; otherwise, the solenoid valve remains in the open state until the opening time is reached; If the distance currently measured by the second distance measuring sensor is less than the set sensing distance, after the step of the controller controlling the solenoid valve to open, the method further includes: During the period when the solenoid valve is open, the second distance measuring sensor performs detection again. If the measured distance is less than the set sensing distance, the controller controls the solenoid valve to close; otherwise, the solenoid valve remains open until the opening time is reached; The method further comprises: When the voltage of the dry cell is less than a preset minimum value, the controller turns off the first distance measuring sensor and the second distance measuring sensor, and controls the status indicator light to flash.

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