WO2009092201A1

WO2009092201A1 - Automatic inducting urinal

Info

Publication number: WO2009092201A1
Application number: PCT/CN2008/002088
Authority: WO
Inventors: Binghong Quan
Original assignee: Shanghai Kohler Electronics, Ltd.
Priority date: 2007-12-27
Filing date: 2008-12-26
Publication date: 2009-07-30
Also published as: CN101230592A; CN101230592B

Abstract

An automatic inducting urinal (100) includes a urinal main body (1), a CPU controller and an electromagnetic valve controlling flushing of urinal via the CPU controller, wherein the urinal (100) also includes an automatic inducting device (4). The automatic inducting device (4) is provided on an outer wall of a middle channel (5) via which the urinal main body (1) is led to a discharge tube. The automatic inducting device (4) produces frequency change after it detects a flowing condition of the liquid, then transmits frequency changing result to the CPU controller to control automatic flush. The automatic inducting urinal (100) senses the inflow of liquid, for example, urine, by the automatic inducting device (4) and the change of oscillation frequency of the oscillation circuit, and further controls the electromagnetic valve via the CPU controller to achieve automatic flush.

Description

Automatic sensor urinal

TECHNICAL FIELD The present invention relates to a urinal, and more particularly to a urinal having an automatic sensing device.

BACKGROUND OF THE INVENTION In the prior art, the most commonly used automatic sensing method is to realize the automatic flushing of the urinal by sensing the human body through an infrared sensor disposed above the urinal. When a person approaches the urinal, infrared rays sense the presence of the human body, thereby judging that the person is urinating. In general, the sensor now signals the sensed signal to the controller, which controls the automatic flush valve of the urinal for a flush. When the person leaves, the infrared sensor can sense the departure of the human body, and it signals the sensed signal to the controller, which controls the automatic flush valve of the urinal and performs a flush. Thereby, the purpose of the urinal automatic induction flushing is achieved. However, such infrared sensing can easily lead to erroneous operation, that is, when the human body moves in front of the urinal and does not want to urinate, it still performs rinsing. This is easy to cause water waste. On the other hand, when the light is strong, it is easy for the infrared sensor to not work. In addition, if the color of the human body is relatively dark, the reflected signal is weak and not easily perceived, and the infrared sensing does not work, and such a phenomenon is particularly common in winter. Moreover, the infrared sensor needs to be provided with a sensing window, so that the urinal cannot be simple and beautiful. Therefore, in the prior art, the urinal automatic flushing is realized by means of temperature sensing. The technical solution achieves automatic induction flushing by a temperature sensor installed at the urinal trap. When the human body urinates, the urine enters the trap, and the temperature of the urine causes a change in the trap temperature, so that the temperature sensor can sense the presence of urine and further perform the flushing action. However, such a technique still has such a drawback: When the indoor temperature is close to the urine temperature, the urine does not change in temperature when it enters the trap, and the temperature sensing does not work. At the same time, when other sewage is poured into the urinal, and the sewage is left indoors for a long time, the temperature of the sewage is the same as the temperature of the water in the trap. This will also cause the temperature sensor to not work, and the purpose of automatic flushing cannot be achieved. Therefore, it is necessary to invent an automatic flushing urinal that is both beautiful and practical.

SUMMARY OF THE INVENTION The purpose of the automatic induction urinal of the present invention is to provide a convenient and reliable automatic induction urinal. One of the technical solutions for automatically sensing the urinal of the present invention is as follows: An automatic induction urinal comprising a urinal body, a CPU controller, and a solenoid valve for controlling flushing by a CPU controller. The automatic induction urinal further comprises an automatic sensing device mounted on the outer wall of the intermediate pipe leading to the sluice body to the launching water, which can detect the frequency change of the liquid flowing through, and the automatic sensing device transmits the frequency change result to the The CPU controller controls the flushing. The technical solution of the automatic induction urinal of the present invention is as follows: An automatic induction urinal, package The urinal body, the CPU controller, the solenoid valve that controls the flushing by the CPU controller, and the trap connected to the sewer in the lower part of the urinal body. The automatic induction urinal further includes an automatic sensing device including an oscillating circuit installed near the trap, which can detect a frequency change of the liquid flowing through, and the automatic sensing device transmits the frequency change result to the CPU controller . Compared with the prior art, the invention automatically senses the urinal, and on the one hand, overcomes the defects of the prior art insensitivity, and is more reliable; on the other hand, it overcomes the prior art operation and is more energy-saving. In addition, since the automatic sensing device is installed in the concealed place, and the water trap structure is fixedly arranged, the installation is simple, and it is not necessary to additionally provide an induction window outside the urinal, so that it is more beautiful and practical.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view showing the structure of an automatic induction urinal according to the present invention. 2 is a block diagram showing the control of the automatic sensing urinal automatic sensing device of the present invention. 3 is a schematic view of an automatic induction urinal oscillation circuit of the present invention. Fig. 4 is a block diagram showing the control of the automatic sensing device in another embodiment of the automatic induction urinal of the present invention. Fig. 5 is a schematic view showing an oscillation circuit in another embodiment of the automatic induction urinal of the present invention. Fig. 6 is a structural schematic view showing the automatic sensing device installed in the trap at another embodiment of the automatic induction urinal according to the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Various embodiments of the present invention will be described in detail below with reference to the drawings, in which the same structures or functions are designated by the same numerals. It is to be understood that the appended drawings are not intended to be As shown in FIG. 1 , the automatic sensing urinal 100 of the present invention mainly comprises a urinal body 1 , a trap 2 , a drain 3 and an automatic sensing device 4 . The lower part of the body 1 is provided with a urine outflow hole 11 , and an intermediate pipe 5 having a certain inclination is connected between the trap 2 and the urine outflow hole 11 , and the intermediate pipe 5 can be separated from the trap 2 , can also be an integrated setting. The automatic sensing device 4 is disposed outside the lower wall 51 of the intermediate duct 5. As shown in FIGS. 2 and 3, the automatic sensing urinal 100 automatic sensing device 4 of the present invention mainly includes an oscillating circuit. The oscillating circuit adopts an inductive detection method, including a detecting inductor L1, a feedback inductor L2, an operational amplifier U1, and resistors R1, R2, R3 and a capacitor C1. The oscillating circuit is electrically connected to a CPU controller that receives the oscillating circuit signal, and the CPU controller further controls the flushing solenoid valve. In the present invention, the control relationship between the automatic sensing device 4 and the CPU controller, the CPU controller and the solenoid valve may be wired or wireless. The oscillation circuit of the invention is based on a hysteresis comparator, and an RLC integration circuit is added. The output voltage is fed back to the opposite end of the operational amplifier U1 through the resistor R1, the detecting inductor L1 and the capacitor C1, and finally the output of the op amp is continuously flipped, thereby outputting a square wave for the CPU controller to collect. The square wave frequency is determined by the resistors R2, R3, R4 and R5, and is also determined by the resistor R1 and the capacitor C1. It is also determined by detecting the mutual inductance voltage of the inductor L1 and the detecting inductor L2 for detecting the inductance L1. When the inductance of the detecting inductor L1 and the mutual inductance between the detecting inductor L1 and the detecting inductor L2 are changed, a change in the output frequency of the operational amplifier U1 is caused. When urine, sewage, and dirt are carried out in the urinal, it flows into the trap 2 along the lower wall 51 of the intermediate duct 5. When flowing through the detection inductance of the automatic sensing device 4, that is, above the inductance coil, it causes a change in the inductance and mutual inductance of the inductance coil, thereby causing a change in the frequency of the oscillation circuit. Since the intermediate duct 5 has a certain inclination and the automatic sensing device 4 is disposed at the lower wall 51 of the intermediate duct 5, the automatic sensing device can be detected once liquid flows therethrough. In the working state, when there is no liquid, the oscillating circuit will send a high frequency oscillating signal of a certain frequency to the CPU controller. The frequency of the oscillating signal changes when there is a liquid. As shown in FIGS. 4 and 5, the automatic sensing urinal 100 automatic sensing device 4 of the present invention mainly includes an oscillating circuit. FIG. 5 shows still another embodiment of the oscillating circuit of the automatic sensing device 4 of the present invention. The oscillating circuit adopts a capacitance detecting manner, including a detecting capacitor C1, a reference capacitor C2, an operational amplifier U1, and a resistor R1, R2, and R3. , R4 and R5, wherein the reference capacitor C2 is larger than the detection value of the detection capacitor CI. The oscillation circuit of the invention is based on the hysteresis comparator, and an RC integration circuit is added, and the output voltage is fed back to the opposite end of the operational amplifier U1 through the resistor R1, the capacitors C1 and C2, and finally the output of the operational amplifier is continuously flipped. The square wave is output for the CPU controller to collect. The square wave frequency is determined by R2, R3, R4, and R5, and depends on resistor R1, capacitors C1, and C2. When the detection capacitor C1 changes, it will cause a change in the output frequency of the operational amplifier U1. When urine, sewage, and dirt are carried out in the urinal, it flows into the trap 2 along the lower wall 51 of the intermediate duct 5. When flowing over the detection capacitor C1 of the automatic sensing device 4, a change in capacitance is caused, thereby causing a change in the frequency of the oscillation circuit. Since the intermediate duct 5 has a certain inclination and the automatic sensing device 4 is disposed at the lower wall 51 of the intermediate duct 5, the automatic sensing device can be detected once liquid flows therethrough.

The CPU controller drives the solenoid valve according to the change of the frequency, thereby achieving automatic flushing. As shown in Figures 2 and 4, the auto-sensing urinal 100 of the present invention further includes a power supply and a voltage stabilizing circuit to provide sufficient power. The automatic sensing urinal 100 of the present invention further includes an electric detecting circuit and a buzzer. When the battery is detected to be insufficient, the sensing is stopped, and the buzzer also performs a no-electric alarm. The specific implementation method of the present invention is as follows:

The CPU controller wakes up periodically for a period of sleep and drives the oscillating circuit to oscillate for a certain period of time. In a preferred embodiment of the present invention, the sleep waking time interval is 1 second. In the present invention yet In a preferred embodiment, it is 2 seconds. The oscillation circuit oscillates for a period of 10 milliseconds in a preferred embodiment of the invention. The purpose of this is to save power. When the auto sensor is powered up, perform an environmental study. If the number of oscillation signal pulses detected each time is substantially the same, the average value is taken as the learning value, and the power-on learning ends and enters the working state. In a preferred embodiment of the invention, the power-on learning time is 5 minutes. In still another embodiment, the power-on learning time is 10 minutes. Furthermore, if the number of pulses detected for a long period of time, such as 5 minutes to 10 minutes, does not change significantly, the learned value is modified according to the average pulse. In the working state, if the number of detected pulses deviates significantly from the learned value, it is considered that a liquid such as a urine flow passes; when the number of pulses detected several times is close to the learned value, it is considered that the liquid stops entering, then the flushing is controlled once. . After the flushing is completed, the time is delayed, and in a preferred embodiment of the present invention, the sensing is restarted for 5 seconds. Fig. 6 is a second embodiment of the automatic sensing device 8 and the trap 9 mounting position of the automatic sensing urinal according to the present invention. The trap 9 includes a water inlet 91, a first curved portion 92, a second curved portion 93, a drain pipe 94, and a water outlet 95. Among them, the drain pipe 94 is installed below the second curved pipe portion 93 and communicates with the left and right pipes. The automatic sensing device 8 is mounted on the side of the second curved portion 93 adjacent to the first curved portion 91 and above the drain pipe 94. When urine or other liquid enters the first curved portion 92 from the water inlet 91 of the trap 9, the water level in the first curved portion 92 rises, and the size of the drain pipe 94 is small, resulting in a liquid level. Holding Continued to rise, when rising to the automatic sensing device 8, the automatic sensing device 8 senses a change in the detection frequency, and further controls the solenoid valve to flush through the controller. When the flushing is completed, the liquid level is lowered to a level below the position of the automatic sensing device 8 due to the presence of the drain pipe, without causing a false flush. While specific embodiments of the invention have been disclosed above, they are not within the scope of the invention.

Claims

Claim

1. An automatic sensing urinal comprising a urinal body, a CPU controller, and a solenoid valve for controlling flushing by a CPU controller, wherein: the automatic sensing urinal further comprises a urinal body mounted to the launching water On the outer wall of the intermediate pipe, an automatic sensing device capable of detecting a change in frequency of the liquid flowing through the situation, the automatic sensing device transmits the frequency change result to the CPU controller to control the flushing.

2. The self-sensing urinal according to claim 1, wherein: an intermediate pipe between the water outlet of the urinal body has an inclined portion, and the automatic sensing device is disposed outside the lower wall of the inclined portion of the intermediate pipe .

3. The self-sensing urinal according to claim 2, wherein: the trap is further provided between the intermediate pipe and the sewage.

4. The self-sensing urinal according to claim 3, wherein: the intermediate duct is integrally provided with the trap.

5. The self-sensing urinal according to any one of claims 1 to 4, wherein: said automatic sensing device comprises an inductive oscillating circuit.

6. The auto-sensing urinal according to claim 5, wherein: said oscillating circuit comprises a sensing inductor, a feedback inductor, an operational amplifier, a resistor and a capacitor.

7. The self-sensing urinal according to any one of claims 1 to 4, characterized in that: The automatic sensing device includes a capacitive oscillation circuit.

8. The automatic induction urinal according to claim 7, wherein: said oscillation circuit comprises a detection capacitor, a reference capacitor, an operational amplifier, and a resistor.

9. The self-sensing urinal according to claim 1, wherein: the automatic induction urinal further comprises an electroless detection circuit and a buzzer.

10. An automatic induction urinal comprising a urinal body, a CPU controller, a solenoid valve for controlling flushing by a CPU controller, and a trap connected to the sewer at a lower portion of the urinal body, wherein: the automatic The induction urinal further includes an automatic sensing device including an oscillating circuit installed near the trap to detect a change in the frequency of the liquid flowing through, and the automatic sensing device transmits the frequency change result to the CPU controller.

11. The self-sensing urinal according to claim 10, wherein: the trap comprises a first elbow portion connecting the water outlet and a second elbow portion connecting the water outlet, wherein the second bend is A drain pipe communicating with both sides of the second curved pipe portion is further disposed below the portion, and the automatic sensing device is disposed at a side of the second curved pipe portion adjacent to the first curved pipe portion and located above the drain pipe.

12. The self-sensing urinal of claim 11 wherein: said oscillating circuit comprises an inductive oscillating circuit.

13. The auto-sensing urinal according to claim 12, wherein: said oscillating circuit comprises a sensing inductor, a feedback inductor, an operational amplifier, a resistor and a capacitor.

14. The auto-sensing urinal of claim 11 wherein: said oscillating circuit comprises a capacitive oscillating circuit.

15. The self-sensing urinal according to claim 14, wherein: the oscillating circuit comprises a detecting capacitor, a reference capacitor, an operational amplifier, and a resistor.

16. The self-sensing urinal according to claim 10, wherein: the automatic sensing urinal further comprises an electric detecting circuit and a buzzer.