WO2021068385A1 - Safe lamp, and method for lamp safety - Google Patents

Abstract

A safe lamp, and a method for lamp safety. The safe lamp comprises a distance sensor (103) and a control module (104), wherein the distance sensor (103) is arranged on a housing (102) and is used for detecting a distance signal of the closest object in real time; the control module (104) is electrically connected to the distance sensor (103) and is used for receiving, in real time, the distance signal detected by the distance sensor (103); and the control module (104) is electrically connected to a light source (101), and sends a safe instruction to the light source (101) when it is determined that the value of the distance signal is less than a preset distance threshold value, so that the light source (101) is turned off, or, the power of the light source (101) is reduced to be within a safe range. According to the lamp, not only can a situation of the lamp toppling over be detected, a situation of the lamp being covered can also be detected; furthermore, a misjudgement caused by a protective cover (107) can also be avoided, thereby greatly improving the safety of the lamp.

Description

Safety lamp and method for lamp safety Technical field

The present invention relates to the field of lighting technology, in particular to a safety lamp and a method for lamp safety.

Background technique

High-power and high-brightness aluminum headlights, after working for a period of time, the front light source heats up, causing the lamp body to be very hot. When the lamp body is dumped on a flammable wooden tabletop or floor, or is covered by other objects, it is especially easy to Burning objects are prone to burn and cause accidents.

Current products mostly use a dump sensor (using a ball method). When the ball is dumped, the ball moves, and the single-chip microcomputer detects the signal and turns off the lamp. This solution cannot detect the covering. When the lamp is suspended and used, the angle changes greatly, and it is easy to malfunction.

Summary of the invention

The embodiment of the present invention provides a method for lamp safety and a safety lamp. A distance sensor is provided on the lamp to monitor the distance to the nearest object in real time. When the distance exceeds a preset threshold, the lamp is turned off, which solves the prior art The problem of misoperation.

To achieve the foregoing objective, on the one hand, an embodiment of the present invention provides a safety lamp, including a light source and a housing;

The distance sensor is arranged on the housing and is used to detect the distance signal of the nearest object in real time;

The control module is electrically connected to the distance sensor, and is used to receive the distance signal detected by the distance sensor in real time; and, the control module is electrically connected to the light source, and when it is determined that the value of the distance signal is less than the preset distance threshold, Send a safety instruction to the light source to turn off the light source or reduce the power of the light source to a safe range.

Optionally, it further includes a protective cover, which is arranged on the front side of the light direction of the light source, and is used at least for waterproofing and dustproofing.

Optionally: the distance sensor is a micro-power ranging sensor, including a transmitter and a receiver, for real-time monitoring of the distance signal of the nearest object in each direction.

Optionally, it is characterized in that the light direction of the light source is not unique.

On the other hand, an embodiment of the present invention provides a method for lamp safety, including:

The distance sensor detects the distance signal of the nearest object in real time, and sends the signal to the control module in real time;

The control module compares the distance value in the signal with a preset distance threshold, and when judging that the value of the distance signal is less than the preset distance threshold, sends a safety instruction to the light source;

According to the safety instruction, the light source is turned off or the power is reduced to a safe range.

Optionally, the real-time detection of the distance signal of the nearest object by the distance sensor includes:

Real-time transmission of ranging transmission lines;

When the reflection line reflected by the obstacle is received, the distance of the obstacle is calculated, and the distance value is sent to the control module through the distance signal.

Optionally, it also includes:

When the distance value is equal to the distance value between the inner wall of the protective cover on the front side of the light source and the sensor, and/or the intensity of the laser light reflected by the obstacle is equal to the preset intensity value, the corresponding distance signal is ignored.

Optional:

When the distance value does not change with time, the corresponding distance signal is ignored.

Optionally, the light direction of the light source is not unique.

The above technical solution has the following beneficial effects:

The lamp provided by the embodiment of the present invention includes a distance sensor and a control module. The distance sensor is arranged on the housing and is used to detect the distance signal of the nearest object in real time; the control module is electrically connected to the distance sensor for receiving in real time The distance signal detected by the distance sensor; and, the control module is electrically connected to the light source, and when it is determined that the value of the distance signal is less than a preset distance threshold, a safety instruction is sent to the light source to turn off the light source or Reduce the power of the light source to within a safe range. The lamp can not only detect the toppling situation of the lamp, but also detect the condition of covering on the lamp. Furthermore, it can avoid the misjudgment caused by the protective cover and greatly improve the safety of the lamp.

Description of the drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only These are 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.

Fig. 1 is a schematic structural diagram of a safety lamp in the first embodiment of the present invention;

Figure 2a is a schematic view of the lamp in the first embodiment of the present invention standing upright;

Figure 2b is a schematic diagram of Figure 2a after being dumped;

Figure 2c is a schematic diagram of Figure 2a being covered by a cover;

Figure 3a is a schematic diagram of a lamp with a protective cover according to an embodiment of the present invention;

Figure 3b is a left side view of Figure 3a;

Fig. 4 is a schematic diagram of a hanging chandelier according to the first embodiment of the present invention;

Fig. 5 is a schematic flowchart of a method for lamp safety according to the second embodiment of the present invention.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

The lamps in the prior art mostly use a tilt sensor (ball method). When the lamp is tilted, the ball will shift. According to this, the single-chip microcomputer (control module) controls the lamp to turn off. However, this solution cannot detect the covering, and will cause misjudgment when the lamp is suspended in use.

In order to solve the problems in the prior art, embodiments of the present invention provide a safety lamp. The distance sensor cooperates with the control module to detect whether there is a cover in real time. When there is a cover, the light source is turned off or the power of the light source is reduced to a safe range. At the same time, when the lamp is overturned, the distance between the ground and the lamp can also be detected, and the light source can be turned off in time or the power of the light source can be reduced to a safe range.

The present invention will be further illustrated by specific examples below.

Fig. 1 is a schematic diagram of the structure of the safety lamp in the first embodiment of the present invention, as shown in the figure:

The safety lamp includes a light source 101 and a housing 102;

The distance sensor 103 is arranged on the housing and is used to detect the distance signal of the nearest object in real time;

The control module 104 is electrically connected to the distance sensor and used to receive the distance signal detected by the distance sensor in real time; and, the control module is electrically connected to the light source, when it is determined that the value of the distance signal is less than the preset distance threshold , Sending a safety instruction to the light source, so that the light source is turned off or the power of the light source is reduced to a safe range.

That is, when the control module determines that the value of the distance signal is less than the preset distance threshold, there are two options according to the different use environment: choose to turn off the light source or reduce the power of the light source (for example, reduce its lumen value).

In an optional implementation manner, the user manually sets to turn off the light source or reduce the power of the light source according to different environments;

In another optional embodiment, an environmental monitoring module is provided on the safety lamp, and the environmental monitoring module is connected to the control module. When the control module determines that the value of the distance signal is less than a preset threshold, the environmental monitoring module feedbacks The use of the environment to send safety instructions; the safety instructions include: turn off the light source instructions or reduce the power of the light source instructions.

For example, in an optional implementation manner: in a closed environment or a completely dark environment, the safety command sent by the control module is a command to reduce the power of the light source; this can prevent the light source from suddenly turning off in a completely dark environment, which will cause adverse effects to the user ; When the visibility reaches the preset threshold, the safety instruction sent by the control module is the instruction to turn off the light source.

In another alternative embodiment, because it is not easy to catch fire when the humidity is high, when the humidity reaches the preset threshold, the safety command sent by the control module is a command to reduce the power of the light source; otherwise, the safety command is a command to turn off the light source.

In an optional embodiment, the distance sensor is arranged on a housing on the same side as the light direction of the light source.

As shown in the figure, in an alternative embodiment, the light source 101 is embedded on the front of the housing 102, and the distance sensor 103 is also provided on the front of the housing, and it detects the distance of the object on the surface of the light source. That is, if the light irradiation direction of the light source is a single direction, the sensor is set in the same direction where the light source is located, and what it detects is the distance of the object in that direction.

As shown in Figures 2a, 2b, and 2c, they are schematic diagrams of the situation where the lamp is overturned and covered.

As shown in Figure 2a, the lamp 100 is perpendicular to the ground 105 and stands on the ground;

When the lamp is overturned, as shown in 2b, both the light source 101 and the distance sensor 103 are attached to the ground;

In the process of Figure 2a to Figure 2b, the distance sensor 103 detects the closest object (decent) gradually decreases. When it is less than the preset distance threshold, the control module 104 turns off the light source 101, or reduces the power of the light source 101. Reduce to a safe range. In this way, when the lamp is turned off or the power is reduced to a safe range before falling on the ground, there will be no safety risk (fire).

As shown in Figure 2c, there is a cover 106 covering the light source 101, and the distance sensor 103 is covered at the same time, so the distance sensor 103 can detect in real time that the distance between an object and the distance sensor is less than the preset threshold, and it will promptly Turn off the light source 101 or reduce its power to avoid the cover 106 from catching fire due to the high temperature of the light source 101.

Optionally, it further includes a protective cover, which is arranged on the front side of the light direction of the light source, and is used at least for waterproofing and dustproofing.

Optionally: the distance sensor is a micro-power ranging sensor, including a transmitter and a receiver, for real-time monitoring of the distance signal of the nearest object in each direction.

In an optional implementation manner, the distance signal of the closest object in each direction includes: real-time monitoring of the distance signal of the closest object in all directions with safety risks. For example, in an alternative embodiment, if the back of the luminaire heats up very seriously, the back of the luminaire also poses a great safety risk. Therefore, in the vertical direction of the position, the real-time closest object distance signal must be detected. monitor.

In another preferred embodiment: the coverage range of the emission line of the transmitter is greater than or equal to the coverage range of the light; that is, the range covered by the light will be ranged in real time. However, this implementation is only an optional real-time method of this application and should not be regarded as a limitation of the technical solution of this application. That is, the real-time ranging solution in any direction where the safety lamp may have potential safety hazards is protected by this application. Within range.

As shown in Figure 3a, it is a schematic diagram of a lamp with a protective cover, as shown in the figure:

The protective cover 107, which covers the light source 101, the distance sensor 103, and the control module 104, can be waterproof and dustproof.

Fig. 3b is a left side view of Fig. 3a.

In this case, the distance sensor may misjudge the protective cover 107 as a covering or a ground. In this regard, in a preferred embodiment, a small power laser ranging sensor is selected as the distance sensor.

This small power laser ranging sensor has no laser damage, and is more stable than infrared ranging sensors, and can identify objects of any color. In addition, the software setting in the control module avoids misjudgment of the protective cover at a fixed distance.

The laser distance measuring sensor can detect the thickness of the glass cover, and when the protective cover and the laser distance measuring sensor are closely arranged, the measured value minus the thickness of the protective cover is used as the value of the distance signal. In this way, the value of the measured distance signal is more accurate, reducing misjudgments.

Correspondingly, when the protective cover and the laser distance measuring sensor are not arranged closely, the measured value minus the distance between the outer wall of the protective cover and the sensor is used as the value of the distance signal.

In another optional embodiment, you can also choose infrared ranging sensor, ultrasonic ranging sensor, wireless wifi ranging sensor, etc. Therefore, the above-mentioned micro-power laser ranging sensor should not be regarded as a limitation of the scope of protection of this application. All ranging sensors applicable to this application should be considered as the scope of protection of this application.

In a preferred embodiment, the protective cover and the distance measuring sensor are closely arranged, and the covering and the ground will not be close to the distance measuring sensor (at least there is a distance equal to the thickness of the protective cover). Avoid misjudgments.

Furthermore, it is also possible to set only objects with "distance changes" as target objects in the control module.

Optionally, the light direction of the light source is not unique.

That is, in the above embodiments, only a one-way illuminating lamp is taken as an example, but this should not be used as a limitation of the present application. The embodiment of the present invention can also be applied to non-unidirectional lighting lamps, such as hanging chandeliers. Fig. 4 is a schematic diagram of hanging chandeliers, as shown in the figure.

The light source 101 is fixed on the housing 102;

The distance sensor 103 is arranged on the housing 102, beside the light source 101;

The control module 104 is not shown;

The protective cover 107 covers both the light source 101 and the distance sensor 103, and is waterproof and dustproof.

It can be seen that the light direction of the light source 101 is not only downward, and the distance sensor 103 not only detects the covering directly below;

Preferably, multiple distance sensors 103 can be provided to meet multi-directional covering detection requirements.

On the other hand, Embodiment 2 of the present invention provides a method for lamp safety. Fig. 5 is a schematic flowchart of the method, as shown in the figure, including:

Step 201: The distance sensor detects the distance signal of the nearest object in real time, and sends the signal to the control module in real time;

Preferably, in this embodiment, the distance sensor at least includes: a laser distance measuring sensor, or an infrared distance measuring sensor, an ultrasonic distance measuring sensor, and a wireless wifi distance measuring sensor.

In an optional embodiment, the distance sensor is a micro-power distance measuring sensor.

Step 202: The control module compares the distance value in the signal with a preset distance threshold, and when it is determined that the value of the distance signal is less than the preset distance threshold, sends a safety instruction to the light source;

In step 203, the light source is turned off according to the safety instruction or the power is reduced to a safe range.

That is, when the control module determines that the value of the distance signal is less than the preset distance threshold, there are two options according to the different use environment: choose to turn off the light source or reduce the power of the light source (for example, reduce its lumen value).

In an optional implementation manner, the user manually sets to turn off the light source or reduce the power of the light source according to different environments;

In another optional embodiment, an environmental monitoring module is provided on the safety lamp, and the environmental monitoring module is connected to the control module. When the control module determines that the value of the distance signal is less than a preset threshold, the environmental monitoring module feedbacks The use of the environment to send safety instructions; the safety instructions include: turn off the light source instructions or reduce the power of the light source instructions.

For example, in an optional implementation manner: in a closed environment or a completely dark environment, the safety command sent by the control module is a command to reduce the power of the light source; this can prevent the light source from suddenly turning off in a completely dark environment, which will cause adverse effects to the user ; When the visibility reaches the preset threshold, the safety instruction sent by the control module is the instruction to turn off the light source.

In another alternative embodiment, because it is not easy to catch fire when the humidity is high, when the humidity reaches the preset threshold, the safety command sent by the control module is a command to reduce the power of the light source; otherwise, the safety command is a command to turn off the light source.

Optionally, the step 201 includes:

Step 2011, sending the ranging transmission line in real time;

When the light source is turned on, the distance sensor is turned on, and laser light is sent for distance measurement. The switch of the distance sensor is synchronized with the light source.

In step 2012, when the reflection line reflected by the obstacle is received, the distance of the obstacle is calculated, and the distance value is sent to the control module through the distance signal.

Optionally, step 202 further includes:

When the distance value is equal to the distance value between the inner wall of the protective cover on the front side of the light source and the sensor, and/or the intensity of the reflection line reflected by the obstacle is equal to the preset intensity value, the corresponding distance signal is ignored.

In an optional embodiment, a protective cover is provided on the front side of the light direction of the light source; the protective cover covers both the sensor and the light source within the period. To avoid misjudgment, when the distance measured by the distance sensor is the distance from the inner wall of the protective cover to the sensor, the signal is ignored. In view of the thickness of the protective cover, the distance value of any object must be greater than the distance value from the inner wall of the protective cover to the sensor.

In a preferred embodiment, a small power laser ranging sensor is selected as the distance sensor.

The micro-power ranging sensor has no laser damage, and is more stable than infrared ranging sensors, and can identify objects of any color.

In a preferred embodiment, the protective cover and the micro-power ranging sensor are arranged closely, that is, the distance between the inner wall of the protective cover and the ranging sensor is zero. Obviously, the distance between the cover and the ground and the ranging sensor will not be zero (at least there is a distance equal to the thickness of the protective cover). Here, when the object distance value is greater than zero and less than the preset threshold, the light source is turned off or the light source power is reduced to a safe range, which can effectively avoid misjudgment.

Furthermore, it is also possible to set only objects with "distance changes" as target objects in the control module.

That is, when the distance value of the object continues to change, the object is regarded as the target object; when the distance value of the object is fixed, the corresponding distance signal is ignored. For example, for an object A whose distance value is greater than a preset distance threshold, and its distance value remains unchanged, then the signal is ignored; for an object B whose distance value is less than or equal to the preset distance threshold, its distance value remains unchanged, then the signal is ignored Signal; For an object C whose distance value is greater than the preset distance threshold, its distance value keeps shrinking, and when it shrinks to the preset distance threshold value, it still continues to shrink, then turn off the light source or reduce its power to within a safe range.

In another optional embodiment, a laser distance measuring sensor is selected as the distance sensor. The laser distance measuring sensor can detect the thickness of the glass cover. The obtained value minus the thickness of the protective cover is used as the value of the distance signal. In this way, the value of the measured distance signal is more accurate, reducing misjudgments.

Correspondingly, when the protective cover and the laser distance measuring sensor are not arranged closely, the measured value minus the distance between the outer wall of the protective cover and the sensor is used as the value of the distance signal.

Optionally, step 202 further includes:

When the distance value does not change with time, the corresponding distance signal is ignored.

In an alternative embodiment, the light direction of the light source is not unique.

That is, in the above embodiments, only a one-way illuminating lamp is taken as an example, but it cannot be used as a limitation of the present invention. The embodiments of the present invention can also be applied to non-unidirectional lighting lamps, such as hanging chandeliers.

As shown in Fig. 4, the direction of the light is not only downward, so the distance sensor cannot only detect the covering underneath. In this embodiment, multiple distance sensors can be provided to meet multi-directional covering detection requirements.

The above technical solution has the following beneficial effects:

The lamp provided by the embodiment of the present invention includes a distance sensor and a control module. The distance sensor is arranged on the housing and is used to detect the distance signal of the nearest object in real time; the control module is electrically connected to the distance sensor for receiving in real time The distance signal detected by the distance sensor; and, the control module is electrically connected to the light source, and when it is determined that the value of the distance signal is less than a preset distance threshold, a safety instruction is sent to the light source, and the light source is turned off or the power of the light source is reduced to Within the safe range. The lamp can not only detect the toppling situation of the lamp, but also detect the condition of covering on the lamp. Furthermore, it can avoid the misjudgment caused by the protective cover and greatly improve the safety of the lamp.

The specific embodiments described above further describe the purpose, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above are only specific embodiments of the present invention, and are not intended to limit the scope of the present invention. The protection scope, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims (9)

A safety lamp, characterized in that it comprises a light source and a housing; The distance sensor is arranged on the housing and is used to detect the distance signal of the nearest object in real time; The control module is electrically connected to the distance sensor, and is used to receive the distance signal detected by the distance sensor in real time; and, the control module is electrically connected to the light source, and when it is determined that the value of the distance signal is less than the preset distance threshold, Send a safety instruction to the light source to turn off the light source or reduce the power of the light source to a safe range. The lamp according to claim 1, further comprising a protective cover, which is arranged on the front side of the light direction of the light source, and is used at least for waterproofing and dustproofing. The lamp according to claim 1, wherein the distance sensor is a micro-power ranging sensor, including a transmitter and a receiver, for real-time monitoring of the distance signal of the nearest object in each direction. The lamp according to any one of claims 1 to 3, wherein the light direction of the light source is not unique. A method for lamp safety, which is characterized in that it includes: The distance sensor detects the distance signal of the nearest object in real time, and sends the signal to the control module in real time; The control module compares the distance value in the signal with a preset distance threshold, and when it is determined that the value of the distance signal is less than the preset distance threshold, sends a safety instruction to the light source; According to the safety instruction, the light source is turned off or the power is reduced to a safe range. The method according to claim 5, wherein the distance sensor detecting the distance signal of the nearest object in real time comprises: Real-time transmission of ranging transmission lines; When the reflection line reflected by the obstacle is received, the distance of the obstacle is calculated, and the distance value is sent to the control module through the distance signal. The method according to claim 6, wherein after the control module compares the distance value in the signal with a preset distance threshold value, the method further comprises: When the distance value is equal to the distance value between the inner wall of the protective cover on the front side of the light source and the sensor, and/or the intensity of the laser light reflected by the obstacle is equal to the preset intensity value, the corresponding distance signal is ignored. The method according to claim 6, characterized in that: When the distance value does not change with time, the corresponding distance signal is ignored. The method according to any one of claims 5-8, wherein the light direction of the light source is not unique.

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