Laser sensor adopting laser sensing detection technology

Abstract

The utility model discloses a laser inductor adopting a laser induction detection technology, which comprises a laser inductor main body electrically connected with a pulse electromagnetic valve, and the same optical cover plate or convex lens shell is arranged on a laser at the transmitting end of the laser inductor main body and a photosensitive element at the receiving end of the laser inductor main body. According to the utility model, through the arrangement of the convex lens shell and the optical convex lens, light can be gathered, the sensing distance of the laser sensor main body can be increased and adjusted, the sensing control distance can be flexibly adjusted in cooperation with the control of the MCU, the laser sensor can be conveniently applied to some farther urinals, and the applicability is improved; pollutants such as dust, water vapor, greasy dirt, water drops and the like can be prevented from directly contacting optical elements in the laser induction sensor or mistakenly touching the optical elements to damage the optical elements and fail, and the use safety, stability and accuracy are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to laser inductor technical field, concretely is a kind of laser inductor using laser induction detection technology. BACKGROUND

[0002] In the automatic application of urinal and induction wash basin, pulse solenoid valve and TOF laser induction sensor are indispensable basic induction control parts, pulse solenoid valve is opened to provide washing or flushing by the simple induction of TOF laser induction sensor to human body leaving, but there are the following deficiencies in use: 1, induction control distance is not adjustable, it is difficult to apply in some far urinal application;2, it is easy to cause the damage of light sensing element of TOF laser induction sensor due to water drop false touch;In view of this, the present application provides a kind of laser inductor using laser induction detection technology. UTILITARY MODEL

[0003] The utility model aims at providing a kind of laser inductor using laser induction detection technology to solve the problems in the background art.

[0004] To achieve the above object, the utility model provides the following technical scheme: a kind of laser inductor using laser induction detection technology, including the laser inductor main part electrically connected with pulse solenoid valve, laser of the laser inductor main part emission end and the light sensing element of receiving end are equipped with same optical cover or convex lens shell;

[0005] Two film-coated lenses respectively matched with laser of laser induction sensor emission end and light sensing element of receiving end are embedded on the optical cover;

[0006] Two optical convex lenses respectively matched with laser of laser induction sensor emission end and light sensing element of receiving end are embedded and fixed on the convex lens shell.

[0007] Preferably, when the laser induction sensor is applied on wash basin faucet, it is equipped with optical cover, the top of optical cover is provided with two first embedding holes respectively fixedly connected with the outer side of corresponding film-coated lens, when the laser induction sensor is applied on urinal, it is equipped with convex lens shell, the top of convex lens shell is provided with two second embedding holes respectively fixedly connected with the outer side of corresponding optical convex lens.

[0008] Preferably, the laser sensor body comprises a DC-DC module, a master control module, a laser sensing module and an infrared receiving module, the master control module is an MCU, the pulse electromagnetic valve comprises an electromagnetic valve driving module, the electromagnetic valve driving module, the DC-DC module, the laser sensing module and the infrared receiving module are electrically connected with the master control module, the electromagnetic valve driving module, the laser sensing module and the infrared receiving module are electrically connected with the DC-DC module, the laser sensor body 1 is powered by 4 pieces of 1.5V dry batteries in series, the DC-DC module is used for converting 6V direct current into 3V direct current, thereby supplying power for the electromagnetic valve driving module, the master control module, the laser sensing module and the infrared receiving module.

[0009] Preferably, the MCU is used for sending a signal for opening the valve to the electromagnetic valve driving module after judging the obstacle condition.

[0010] Preferably, the electromagnetic valve driving module is used for controlling the pulse electromagnetic valve to open and close respectively when receiving the signal for opening the valve and reaching the preset closing time.

[0011] Preferably, the infrared receiving module is used for receiving the signal sent by an external remote controller and delivering the corresponding control instruction to the MCU.

[0012] Preferably, the MCU has a battery power monitoring function and is used for controlling the pulse electromagnetic valve to be in a closed state when the power is insufficient.

[0013] Compared with the prior art, the utility model has the advantages that:

[0014] 1. The convex lens shell and the optical convex lens are matched, dust, water vapor, oil stains, water droplets and other pollutants cannot directly contact the optical elements inside the laser sensing sensor or cause damage to the optical elements, the light is concentrated and the sensing distance of the laser sensor body is increased, the control distance of the sensing control is flexibly adjusted under the control of the MCU, the application is convenient for some far away urinals, and the applicability is improved.

[0015] 2. The optical cover and the coated lens are matched, dust, water vapor, oil stains, water droplets and other pollutants cannot directly contact the optical elements inside the laser sensing sensor or cause damage to the optical elements, the use safety and stability are improved, the coated lens has an optical filtering function, can selectively transmit light of a specific wavelength and block light of other wavelengths, helps to filter out interference wavelengths in ambient light, improves the signal-to-noise ratio, enhances the stability and accuracy of measurement, reduces false triggering, and the transmittance of the emitted and received light is increased through the coating technology, the transmittance of the light is increased, the emitted light can be more effectively transmitted to the target object, the received light can be more efficiently entered into the laser sensing sensor, and the measurement range and precision are improved.

[0016] The utility model discloses a convex lens shell and optical convex lens are set up, can condense light and increase the inductive distance of adjusting laser inductor main part, cooperate the control of MCU, realize the flexible adjustment to inductive control distance, some convenient application of far urinal is applied, improve the applicability, through the optical cover sheet and the film -coated lens of setting up, can prevent dust, water vapor, oil dirt, water drop etc. Pollutant directly contacts the optical element or to its mistake and hits damage failure in the laser induction sensor inside, improve the use safety, stability and accuracy. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 The utility model discloses a kind of optical cover sheet structure diagram of laser inductor of laser inductor of laser induction detection technology is used for the laser inductor main body of laser inductor;

[0018] Figure 2 The utility model discloses a kind of optical cover sheet structure diagram of laser inductor of laser induction detection technology is used for the laser inductor;

[0019] Figure 3 The utility model discloses a kind of convex lens shell structure diagram of laser inductor of laser induction detection technology is used for the laser inductor;

[0020] Figure 4 The utility model discloses a kind of DC-DC module circuit diagram of laser inductor of laser induction detection technology is used for the laser inductor;

[0021] Figure 5 The utility model discloses a kind of electromagnetic valve drive module circuit diagram of laser inductor of laser induction detection technology is used for the laser inductor;

[0022] Figure 6 The utility model discloses a kind of main control module circuit diagram of laser inductor of laser induction detection technology is used for the laser inductor;

[0023] Figure 7 The utility model discloses a kind of laser sensing module circuit diagram of laser inductor of laser induction detection technology is used for the laser inductor;

[0024] Figure 8 The utility model discloses a kind of infrared receiving module circuit diagram of laser inductor of laser induction detection technology is used for the laser inductor.

[0025] In the drawing: 1, laser inductor main body;2, optical cover sheet;201, first embedding hole;202, film-coated lens;3, convex lens shell;301, second embedding hole;302, optical convex lens. DETAILED DESCRIPTION

[0026] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative efforts are within the scope of the present application.

[0027] Embodiment one

[0028] As shown in Figure 1 , 2 , 4, 5, 6, 7 and 8, the laser sensor of the present embodiment adopts laser induction detection technology, which comprises a laser sensor main body 1 electrically connected with a pulse electromagnetic valve, a laser on the emitting end of the laser sensor main body 1 and a photosensitive element on the receiving end are provided with the same optical cover 2;

[0029] The optical cover 2 is embedded with two plated film lenses 202 respectively matched with the laser on the emitting end of the laser induction sensor and the photosensitive element on the receiving end;

[0030] When the laser induction sensor is applied to a washbasin faucet, the optical cover 2 is provided, and the top of the optical cover 2 is provided with two first embedded holes 201 respectively fixedly connected with the outer sides of the corresponding plated film lenses 202;

[0031] The optical cover 2 is used as a physical barrier to prevent dust, water vapor, oil stains, water droplets and other pollutants from directly contacting the optical elements inside the laser induction sensor. The plated film lens 202 has an optical filtering function, which is used to selectively transmit light of a specific wavelength while blocking light of other wavelengths, which helps to filter out interfering wavelengths in ambient light and only allows light of a specific wavelength related to the measurement of the laser induction sensor to pass through, thereby improving the signal-to-noise ratio of the system, enhancing the stability and accuracy of the measurement, allowing the laser induction sensor to work stably under different light conditions and not be affected by changes in external light, more accurately sensing the departure of the human body and reducing false triggering. Through the coating technology means, the transmitted and received light is treated to increase the transmittance of the light, so that the emitted light can be more effectively transmitted to the target object, and the received light can be more efficiently entered into the laser induction sensor, thereby improving the measurement range and accuracy.

[0032] Specifically, the laser sensor body 1 comprises a DC-DC module, a main control module, a laser sensing module and an infrared receiving module, the main control module is an MCU, the pulse electromagnetic valve comprises an electromagnetic valve driving module, the electromagnetic valve driving module, the DC-DC module, the laser sensing module and the infrared receiving module are electrically connected with the main control module, the electromagnetic valve driving module, the laser sensing module and the infrared receiving module are electrically connected with the DC-DC module, the laser sensor body 1 is powered by 4 series 1.5V dry batteries, the DC-DC module is used for converting 6V direct current into 3V direct current, thereby supplying power for the electromagnetic valve driving module, the main control module, the laser sensing module and the infrared receiving module; the MCU is used for sending a valve opening signal to the electromagnetic valve driving module after judging the obstacle condition; the electromagnetic valve driving module is used for controlling the pulse electromagnetic valve to open and close respectively when receiving the valve opening signal and reaching the preset closing time; the infrared receiving module is used for receiving the signal sent by the external remote controller and transmitting the corresponding control instruction to the MCU; the MCU has a battery power monitoring function and is used for controlling the pulse electromagnetic valve to be in a closed state when the power is insufficient.

[0033] Further, the DC-DC module comprises a chip U3 and a chip U5, the pin 4 and the pin 6 of the chip U5 are electrically connected with a voltage input end, one end of the resistor R6 is electrically connected with the pin 1 and the pin 3 of the chip U5, one end of the capacitor C3, the pin 5 of the chip U3 and one end of the capacitor C4 are electrically connected with the pin 2 of the chip U5, one end of the resistor R3 is electrically connected with the pin 4 of the chip U3, the other end of the resistor R3 is electrically connected with one end of the capacitor C4, the pin 6 and the pin 7 of the chip U3 are grounded, one end of the resistor R4, one end of the capacitor C5, one end of the capacitor C6, one end of the capacitor C8 and a 3V voltage output end are electrically connected with the pin 2 of the chip U3, one end of the resistor R5 is electrically connected with the pin 3 of the chip U3 and the other end of the resistor R4, the other end of the resistor R6, the other end of the capacitor C3, the other end of the capacitor C4, the other end of the capacitor C5, the other end of the capacitor C6, the other end of the capacitor C8 and the other end of the resistor R5 are grounded;

[0034] The electromagnetic valve driving module comprises a chip U1, the pin 8 of the chip U1 is electrically connected with a 3V voltage output end, one end of the large-capacity capacitor C10 is electrically connected with the pin 1 of the chip U1, the pin 4, the pin 6 of the chip U1 and the other end of the capacitor C10 are grounded, and the large-capacity capacitor C10 is used for providing sufficient electric energy for the chip U1 by means of large-capacity mode;

[0035] The main control module includes a chip U4, the negative electrode of an LED lamp D1 is electrically connected with the pin 3 of the chip U4, the positive electrode of the LED lamp D1 is electrically connected with one end of a resistor R9, the other end of the resistor R9 is electrically connected with a 3V voltage output terminal, one end of a capacitor C7 is electrically connected with the pin 5 of the chip U4, the other end of the capacitor C7, the pin 4 and the pin 21 of the chip U4 are grounded, one end of a resistor R7, one end of a resistor R8 and one end of a capacitor C9 are electrically connected with the pin 17 of the chip U4, the other end of the capacitor C9 and the other end of the resistor R8 are grounded, the other end of the resistor R7 is electrically connected with a voltage VDET, the pin 18, the pin 19 and the pin 20 of the chip U4 are electrically connected with the pin 7, the pin 6 and the pin 5 of the chip U1 respectively, and the LED lamp D1 is used for indicating;

[0036] The laser sensing module includes a chip U2, the pin 5, the pin 10, the pin 9 and the pin 7 of the chip U2 are electrically connected with the pin 10, the pin 9, the pin 8 and the pin 11 of the chip U4 respectively, one end of a capacitor C2 is electrically connected with the pin 1 of the chip U2, the other end of the capacitor C2 and the pin 2, the pin 3 and the pin 4 of the chip U2 are grounded, the pin 1 of the chip U2 is electrically connected with a 3V voltage output terminal, one end of a resistor R2 and one end of a resistor R1 are electrically connected with the pin 9 and the pin 10 of the chip U2 respectively, one end of a capacitor C1 is electrically connected with the other end of the resistor R2, the other end of the resistor R1 and the pin 11 of the chip U2, the other end of the capacitor C11 is grounded, and the other end of the resistor R2, the other end of the resistor R1 and the pin 11 of the chip U2 are electrically connected with the 3V voltage output terminal; the laser sensing module internally has a program, and the MCU controls the action of distance measurement by communicating with the chip U2;

[0037] The infrared receiving module includes a resistor R10 and a triode D2, one end of the resistor R10 and the collector of the triode D2 are electrically connected with the pin 2 of the chip U4, the emitter of the triode D2 is grounded, and the other end of the resistor R10 is electrically connected with a 3V voltage output terminal;

[0038] The embodiment can prevent dust, water vapor, oil stains, water droplets and other pollutants from directly contacting the optical elements inside the laser sensing sensor or from being accidentally touched, damaged and invalidated, improve the use safety and stability, facilitate safe application work when applied to the washbasin faucet, and utilize the film-coated lens 202 to have an optical filtering function, selectively transmit light of a specific wavelength, block light of other wavelengths, help filter out interference wavelengths in ambient light, improve the signal-to-noise ratio, enhance the stability and accuracy of measurement, reduce false triggering, and increase the transmittance of the emitted and received light through the film-coating technology, so that the emitted light can be more effectively transmitted to the target object, the received light can be more efficiently entered into the laser sensing sensor, and the measurement range and precision are improved.

[0039] Embodiment two

[0040] As Figure 1 and 3 The embodiment proposes a laser inductor using laser induction detection technology, which comprises a laser inductor body 1 electrically connected with a pulse electromagnetic valve, a laser on the emission end of the laser inductor body 1 and a photosensitive element on the receiving end of the laser inductor body 1 are provided with a same convex lens shell 3.

[0041] The convex lens shell 3 is embedded and fixed with two optical convex lenses 302 respectively matched with the laser on the emission end of the laser induction sensor and the photosensitive element on the receiving end of the laser induction sensor.

[0042] When the laser induction sensor is applied to a urinal, the convex lens shell 3 is provided, and the top of the convex lens shell 3 is provided with two second embedding holes 301 respectively fixedly connected with the outer sides of the corresponding optical convex lenses 302.

[0043] The convex lens shell 3 is used as a physical barrier to prevent dust, water vapor, oil stains, water droplets and other pollutants from directly contacting the optical elements inside the laser induction sensor. The optical convex lens 302 is used for light condensation, the emission light energy is more concentrated, the loss in the propagation process is relatively reduced, and the propagation distance is farther. In some places where a larger induction range is required, such as a urinal sensor in a public bathroom, the laser induction sensor with the optical convex lens 302 can realize detection at a farther distance. Originally, objects at a distance of 30 cm from the faucet could be detected. After adding the convex lens, the detection distance can be increased to 100 cm or even farther. This not only facilitates the user, but also can sense the approach of the user in advance, make a response to water out in advance, and provide a more convenient use experience. The optical cover 2 and the convex lens shell 3 are also used to ensure that the laser induction sensor can still work normally when water droplets or water splashes occur.

[0044] Specifically, the laser sensor body 1 includes a DC-DC module, a master control module, a laser sensing module and an infrared receiving module, the master control module is an MCU, the pulse electromagnetic valve includes an electromagnetic valve driving module, the electromagnetic valve driving module, the DC-DC module, the laser sensing module and the infrared receiving module are electrically connected with the master control module, the electromagnetic valve driving module, the laser sensing module, the infrared receiving module are electrically connected with the DC-DC module, the laser sensor body 1 is powered by 4 pieces of 1.5V dry batteries in series, the DC-DC module is used for converting 6V direct current into 3V direct current, thereby supplying power for the electromagnetic valve driving module, the master control module, the laser sensing module and the infrared receiving module; the MCU is used for sending a signal of opening the valve to the electromagnetic valve driving module after judging the obstacle condition; the electromagnetic valve driving module is used for controlling the pulse electromagnetic valve to open and close respectively when receiving the opening signal and reaching the preset closing time; the infrared receiving module is used for receiving the signal sent by the external remote controller and transmitting the corresponding control instruction to the MCU; the MCU has a battery power monitoring function and is used for controlling the pulse electromagnetic valve to be in a closed state when the power is insufficient.

[0045] The embodiment can prevent dust, water vapor, oil stains, water droplets and other pollutants from directly contacting the optical elements inside the laser sensing sensor or from being accidentally damaged and invalidated, can condense light and increase the sensing distance of the laser sensor body, and can realize flexible adjustment of the sensing control distance by cooperating with the control of the MCU, thereby facilitating the application in some relatively far urinals, and improving the applicability.

[0046] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and not for limiting the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, it still can be modified to the technical solutions recorded in the foregoing embodiments, or equivalent replacement for some technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A laser sensor employing laser sensing detection technology, comprising a laser sensor body (1) electrically connected to a pulse solenoid valve, characterized in that: The laser sensor body (1) has the same optical cover (2) or convex lens housing (3) installed on the laser at the transmitting end and the photosensitive element at the receiving end. The optical cover (2) is fitted with two coated lenses (202) that are adapted to the laser at the transmitting end and the photosensitive element at the receiving end of the laser sensor, respectively. Two optical convex lenses (302) are embedded and fixed on the convex lens housing (3), which are respectively adapted to the laser at the transmitting end of the laser sensor and the photosensitive element at the receiving end.

2. A laser sensor employing laser sensing detection technology according to claim 1, characterized in that: When the laser sensor is used on a washbasin faucet, it is equipped with an optical cover (2). The top of the optical cover (2) has two first mounting holes (201) that are fixedly connected to the outer side of the corresponding coated lens (202). When the laser sensor is used on a urinal, it is equipped with a convex lens housing (3). The top of the convex lens housing (3) has two second mounting holes (301) that are fixedly connected to the outer side of the corresponding optical convex lens (302).

3. A laser sensor employing laser sensing detection technology according to claim 1, characterized in that: The laser sensor body (1) includes a DC-DC module, a main control module, a laser sensing module, and an infrared receiving module. The main control module is an MCU. The pulse solenoid valve includes a solenoid valve driving module. The solenoid valve driving module, the DC-DC module, the laser sensing module, and the infrared receiving module are all electrically connected to the main control module. The solenoid valve driving module, the laser sensing module, and the infrared receiving module are all electrically connected to the DC-DC module. The laser sensor body (1) is powered by four 1.5V dry batteries connected in series. The DC-DC module is used to convert 6V DC to 3V DC, thereby powering the solenoid valve driving module, the main control module, the laser sensing module, and the infrared receiving module.

4. A laser sensor employing laser sensing detection technology according to claim 3, characterized in that: The MCU is used to send a signal to the solenoid valve drive module to open the valve after determining the obstacle situation.

5. A laser sensor employing laser sensing detection technology according to claim 3, characterized in that: The solenoid valve drive module is used to control the pulse solenoid valve to open and close when it receives an opening signal and when a preset closing time is reached, respectively.

6. A laser sensor employing laser sensing detection technology according to claim 3, characterized in that: The infrared receiving module is used to receive signals sent by an external remote control and transmit them to the MCU with corresponding control commands.

7. A laser sensor employing laser sensing detection technology according to claim 3, characterized in that: The MCU has a battery power monitoring function and is used to control the pulse solenoid valve to be in a closed state when the power is low.

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