CN212780510U - Novel carpet detection sensor - Google Patents
Novel carpet detection sensor Download PDFInfo
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- CN212780510U CN212780510U CN202021573538.9U CN202021573538U CN212780510U CN 212780510 U CN212780510 U CN 212780510U CN 202021573538 U CN202021573538 U CN 202021573538U CN 212780510 U CN212780510 U CN 212780510U
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Abstract
The utility model discloses a novel carpet detection sensor, a serial communication port, include: the infrared light source processing device comprises a group of infrared light sources, a first lens arranged on one side of the group of infrared light sources, a light receiver, a second lens arranged on one side of the light receiver and a processor; the group of infrared light sources at least comprises two infrared light sources. The utility model discloses can discern the carpet place region fast, realize the regional differentiation of the machine of sweeping the floor carpet and non-carpet, guarantee the accurate nature of the machine operation in-process of sweeping the floor, improve user experience and feel.
Description
Technical Field
The utility model relates to a sensor field especially relates to a novel carpet detection sensor.
Background
At present, 80% of the floor sweeping machines have a floor mopping function, namely a floor mopping and sweeping body, when the floor sweeping machines are in a floor mopping mode, a carpet area needs to be avoided for working, otherwise, a carpet is mopped or dirty, and the experience of a user in the using process is reduced.
In order to help the sweeper to determine whether the carpet is directly under the sweeper, the following methods are available for identifying the carpet: 1: the map fence is characterized in that a floor sweeping prohibiting area is arranged on the floor sweeping machine APP, and the floor sweeping area is indirectly identified by combining an azimuth sensor inside the floor sweeping machine APP; 2, optical/magnetic fencing; the carpet is surrounded by a dark adhesive tape or a magnetic adhesive tape for one circle, and the carpet area identification can be indirectly realized through an optical or magnetic sensor; the two methods belong to indirect identification, and are troublesome to operate, and are not attractive and practical. And 3, ultrasonic recognition, namely, the reflection characteristic difference between the carpet and the floor by utilizing ultrasonic waves, the method belongs to direct recognition, has high efficiency and high recognition rate, can distinguish the carpet from the floor, and has a more complex structure and high cost.
Accordingly, the prior art is deficient and needs improvement.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming prior art's not enough, provide a novel carpet detection sensor, utilize the diffuse reflection characteristic that the carpet was set a light and other material bottom plates to the specular reflection's of setting a light difference to carry out data processing through the treater, distinguishable diffuse reflection and specular reflection's proportion, thereby distinguish carpet and non-carpet region.
The technical scheme of the utility model as follows: a novel carpet detection sensor comprising: the infrared light source processing device comprises a group of infrared light sources, a first lens arranged on one side of the group of infrared light sources, a light receiver, a second lens arranged on one side of the light receiver and a processor; the group of infrared light sources at least comprises two infrared light sources, and the light emitting directions of the infrared light sources arranged in the group of infrared light sources are different and face the first lens.
Set up In the sweeper a novel carpet detector, a set of infrared light source, at least, include two infrared light sources, and have at least the specular reflection light of the infrared light that an infrared light source sent can incide the photoreceiver, have at least the specular reflection light of the infrared light that an infrared light source sent not incide on the photoreceiver at all, at work, all infrared light sources In a set of infrared light source light up In proper order, the photoreceiver receives the light after the infrared light that the infrared light source sent is through the reflection In proper order, and produce photocurrent I1, I2.
M＝(max(I1，I2，...In)-min(I1，I2，...In))/min(I1，I2，...In)
Wherein max (I1, I2.. In) represents the maximum light current value of the infrared light emitted by each infrared light source In the group of infrared light sources received by the light receiver In unit time, and min (I1, I2.. In) represents the minimum light current value of the infrared light emitted by each infrared light source In the group of infrared light sources received by the light receiver In unit time; for example, at a specific distance, the infrared light emitted by the second infrared light source in the group of infrared light sources forms a mirror reflection with the light receiver after being reflected, and the infrared light emitted by the other infrared light sources is not at the mirror reflection position after being reflected, at this time, if the floor is made of a non-carpet material, the value of the photocurrent I2 received by the light receiver is far greater than the values of the other photocurrents, the value of M is far greater than 1, and the floor can be determined to be made of a non-carpet material; if the floor is made of the carpet, the specular reflection components of the group of infrared light sources are all zero, diffuse reflection is mainly used at the moment, the values of I1 and I2.. In are close to each other, the value of M is close to 1, the floor can be judged to be made of the carpet, the detection result is quick and accurate, the carpet and non-carpet areas can be accurately distinguished, the normal work of the sweeper is guaranteed, and the experience of a user is improved; the utility model provides a carpet detection sensor simple structure can place the machine of sweeping the floor in, does not influence the outward appearance of machine of sweeping the floor in, and the operation process of surveying the carpet is simple quick, and manufacturing cost is lower, and the practicality is strong.
Further, the processor is configured to receive the photocurrent signals and compare the photocurrent signals.
Furthermore, the divergence angle of the infrared light emitted by the group of infrared light sources after passing through the first lens is-10 degrees to 10 degrees.
Further, the distance between the center of any one infrared light source in the group of infrared light sources and the center of the light receiver is 6-12 mm.
Furthermore, the group of infrared light sources comprises four infrared light sources; the four infrared light sources are sequentially arranged on one side of the first lens.
Further, the infrared light source is an infrared LED lamp or a vcsel chip. Four infrared light sources are arranged, the four infrared light sources can be simultaneously infrared LED lamps or simultaneously a vcsel chip, and selection can be carried out according to actual conditions.
Further, the light receiver is a PD receiving tube, a PT receiving tube, an APD receiver or a PSD receiver.
Further, the processor is an ASIC chip.
Adopt above-mentioned scheme, the utility model provides a novel carpet detection sensor has following beneficial effect:
1. the area where the carpet is located can be quickly identified, the carpet area and the non-carpet area of the sweeper can be distinguished, the accuracy of the sweeper in the running process is guaranteed, and the user experience is improved;
2. the sweeper has the advantages of simple structure and low production cost, reduces the manufacturing cost of the sweeper, and is suitable for the sweeper with higher requirement on volume;
3. when the floor has the height to fluctuate and run into the barrier when the machine of sweeping the floor is marchd and produce a contained angle with the floor, the utility model provides a novel carpet detection sensor all can normally work, and environmental suitability is strong, the practicality is high.
Drawings
FIG. 1 is an optical schematic diagram of a non-carpet floor according to an embodiment of the present invention;
fig. 2 is an optical schematic diagram of the embodiment of the present invention when the floor is a carpet.
Wherein: the infrared illuminating system comprises a floor 1, a first infrared light source 2, a second infrared light source 3, a third infrared light source 4, a fourth infrared light source 5, a light receiver 6, a first lens 7 and a second lens 8.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1-2, the present invention includes: the infrared detection device comprises a first infrared light source 2, a second infrared light source 3, a third infrared light source 4, a fourth infrared light source 5, a first lens 7, an optical receiver 6, a second lens 8 and a processor, wherein the second infrared light source 3, the third infrared light source 4 and the fourth infrared light source 5 are sequentially arranged on one side of the first infrared light source 2; the first infrared light source 2, the second infrared light source 3, the third infrared light source 4 and the fourth infrared light source 5 have different light emitting directions and face the first lens 7; the optical receiver 6 is configured to receive light, which is obtained by reflecting infrared light emitted by the group of infrared light sources in unit time, generate different photocurrent data I, and send the photocurrent data I to the processor; the processor calculates an M value and outputs a calculation result;
the M is (max (I1, I2, I3, I4) -min (I1, I2, I3, I4))/min (I1, I2, I3, I4)
Wherein max (I1, I2, I3, I4) represents the maximum value of the light current of the infrared light emitted by the first infrared light source 2, the second infrared light source 3, the third infrared light source 4, and the fourth infrared light source 5 in the group of infrared light sources received by the light receiver 6 in a unit time, and min (I1, I2, I3, I4) represents the minimum value of the light current of the infrared light emitted by the first infrared light source 2, the second infrared light source 3, the third infrared light source 4, and the fourth infrared light source 5 in the group of infrared light sources received by the light receiver 6 in a unit time. In this embodiment, the first infrared light source 2, the second infrared light source 3, the third infrared light source 4, and the fourth infrared light source 5 are all infrared LED lamps, and divergence angles of the emitted infrared light passing through the first lens 7 are all 10 degrees; the optical receiver 6 is a PD receiving tube, and the processor is an ASIC chip; in this embodiment, the distance between the second infrared light source 3 and the center of the light receiver 6 is 8mm, the time for the first infrared light source 2, the second infrared light source 3, the third infrared light source 4, and the fourth infrared light source 5 to continuously emit light is T1, and the time interval between adjacent infrared light sources is T0.
When the novel carpet detector is arranged in a sweeper, a first infrared light source 2, a second infrared light source 3, a third infrared light source 4 and a fourth infrared light source 5 are sequentially lightened, a light receiver 6 sequentially generates four photocurrents I1, I2, I3 and I4, when the floor is made of a non-carpet material, partial or all specular reflection is generated to light due to a base plate 1 made of the non-carpet material, infrared light emitted by the second infrared light source 3 is reflected by the base plate 1, the specular reflection part of the infrared light can be received by the light receiver 6, the specular reflection part of the light receiver 6 cannot be received after the first infrared light source 2, the third infrared light source 4 and the fourth infrared light source 5 are reflected by the base plate 1, so that the value of the photocurrent I2 is far greater than the values of the photocurrents I1, I3 and I4, and the value of the photocurrent I32 received by the light receiver 6 is far greater than that of other photocurrents 2, the value of M is far more than 1, so that the floor can be judged to be made of non-carpet materials; if the floor is made of a carpet, the carpet can generate complete diffuse reflection to light, at the moment, infrared light emitted by the first infrared light source 2, the second infrared light source 3, the third infrared light source 4 and the fourth infrared light source 5 is not reflected by a mirror surface after being incident on the floor, and due to the characteristic of diffuse reflection, partial light of the first infrared light source 2, the second infrared light source 3, the third infrared light source 4 and the fourth infrared light source 5 can be diffused to the light receiver 6, at the moment, the values of I1 and I2. The utility model provides a carpet detection sensor simple structure can place the machine of sweeping the floor in, does not influence the outward appearance of machine of sweeping the floor in, and the operation process of surveying the carpet is simple quick, and manufacturing cost is lower, and the practicality is strong.
To sum up, the utility model provides a novel carpet detection sensor has following beneficial effect:
1. the area where the carpet is located can be quickly identified, the carpet area and the non-carpet area of the sweeper can be distinguished, the accuracy of the sweeper in the running process is guaranteed, and the user experience is improved;
2. the sweeper has the advantages of simple structure and low production cost, reduces the manufacturing cost of the sweeper, and is suitable for the sweeper with higher requirement on volume;
3. when the floor has the height to fluctuate and run into the barrier when the machine of sweeping the floor is marchd and produce a contained angle with the floor, the utility model provides a novel carpet detection sensor all can normally work, and environmental suitability is strong, the practicality is high.
The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (9)
1. A novel carpet detection sensor, comprising: the infrared light source processing device comprises a group of infrared light sources, a first lens arranged on one side of the group of infrared light sources, a light receiver, a second lens arranged on one side of the light receiver and a processor; the group of infrared light sources at least comprises two infrared light sources, and the light emitting directions of the infrared light sources arranged in the group of infrared light sources are different and face the first lens.
2. The new carpet detection sensor as claimed in claim 1, wherein the light receiver is configured to receive reflected light from the infrared light from the group of infrared light sources per unit time, generate different photocurrent I, convert the photocurrent I into a photocurrent signal, and send the photocurrent signal to the processor.
3. The new carpet detection sensor as recited in claim 2 wherein the processor is configured to receive the photocurrent signals and compare the photocurrent signals.
4. The new carpet detection sensor as claimed in claim 1, wherein the infrared light from the set of infrared light sources has a divergence angle of-10 ° to 10 ° after passing through the first lens.
5. The new carpet detection sensor as claimed in claim 1, wherein the distance between the center of any one of the infrared light sources in the set of infrared light sources and the center of the light receiver is 6mm to 12 mm.
6. The new carpet detection sensor as recited in claim 1 wherein the set of infrared light sources includes four infrared light sources; the four infrared light sources are sequentially arranged on one side of the first lens.
7. The new carpet detection sensor as claimed in claim 1, wherein the infrared light source is an infrared LED lamp or a vcsel chip.
8. The new carpet detection sensor as claimed in claim 1, wherein the light receiver is a PD receiver tube or a PT receiver tube or an APD receiver or a PSD receiver.
9. The new carpet detection sensor of claim 1 wherein the processor is an ASIC chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021573538.9U CN212780510U (en) | 2020-07-31 | 2020-07-31 | Novel carpet detection sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021573538.9U CN212780510U (en) | 2020-07-31 | 2020-07-31 | Novel carpet detection sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212780510U true CN212780510U (en) | 2021-03-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021573538.9U Active CN212780510U (en) | 2020-07-31 | 2020-07-31 | Novel carpet detection sensor |
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| CN (1) | CN212780510U (en) |
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- 2020-07-31 CN CN202021573538.9U patent/CN212780510U/en active Active
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