A street lamp control method, device and system

Abstract

The present invention provides a street lamp control method, device and system, which directionally collects a first sound signal from the direction of an oncoming vehicle on one side of the road where the street lamp is located, wherein the collection time of the first sound signal is the first moment; directionally collects a second sound signal from the direction of an oncoming vehicle on one side of the road where the street lamp is located, wherein the collection time of the second sound signal is the second moment, and the first moment is earlier than the second moment; determines the strength of the first sound signal and the strength of the second sound signal; determines whether there is a vehicle from the direction of the oncoming vehicle on the side of the road where the street lamp is located heading towards the street lamp according to the strength of the first sound signal and the strength of the second sound signal, and if so, controls the street lamp to light up. The present invention can control the lighting of the street lamp on the road on this side according to the change of the strength of the sound signal on the road on this side, and the sound signal generated on the road on this side will not control the lighting of the street lamp on the other side of the road. The sound generated on one side of the road only controls the street lamp on the road on this side, which can save energy.

Description

Technical Field

[0001] The present invention relates to the field of road indicator lights, and in particular to a street light control method, device and system. Background Art

[0002] At present, street lamps are mainly installed on both sides of the road. When the street lamps are controlled by sound, as long as a sound with a sound intensity greater than a certain level appears around the street lamp, the street lamp can be controlled to light up.

[0003] Since the range of sounds that can be collected by street lamps on both sides of the road overlaps, the sound emitted on one side of the road may also be collected by the sound collector on the street lamp on the other side of the road, so that the sound emitted on one side of the road can control the lighting of street lamps on both sides of the road, wasting energy. Summary of the invention

[0004] In view of this, the present invention provides a street lamp control method, device and system, which can achieve that a sound occurring on one side of the road can only control the lighting of the street lamps on the side of the road where the sound is located, but cannot control the lighting of the street lamps on the other side of the road.

[0005] In order to achieve the above-mentioned object of the invention, the present invention provides the following technical solutions:

[0006] In a first aspect, a street lamp control method includes:

[0007] Directionally collecting a first sound signal from a direction of an oncoming vehicle on one side of a road where the street lamp is located, wherein the first sound signal is collected at a first moment;

[0008] Directionally collecting a second sound signal from the direction of an oncoming vehicle on one side of the road where the street lamp is located, wherein the second sound signal is collected at a second moment, and the first moment is earlier than the second moment;

[0009] determining a strength of the first sound signal and a strength of the second sound signal;

[0010] According to the strength of the first sound signal and the strength of the second sound signal, it is determined whether there is a vehicle coming towards the street lamp on the side of the road where the street lamp is located, and if so, the street lamp is controlled to light up.

[0011] In combination with the first aspect, in some optional implementations, determining the strength of the first sound signal and the strength of the second sound signal includes:

[0012] Determine a first intensity of the first sound signal within a first preset frequency band, and determine a second intensity of the second sound signal within the first preset frequency band;

[0013] The determining, based on the strength of the first sound signal and the strength of the second sound signal, whether there is a vehicle coming from the direction of the road where the street lamp is located and heading toward the street lamp comprises:

[0014] When the first intensity is less than the second intensity, it is determined that a vehicle is approaching the street lamp from the direction of oncoming traffic on the side of the road where the street lamp is located.

[0015] In combination with the first aspect, in some optional implementations, determining the strength of the first sound signal and the strength of the second sound signal includes:

[0016] Determine a first intensity of the first sound signal within a first preset frequency band, determine a second intensity of the second sound signal within the first preset frequency band; determine a third intensity of the first sound signal within a second preset frequency band, determine a fourth intensity of the second sound signal within the second preset frequency band, wherein the first preset frequency band is a frequency band where tire noise is located, and the second preset frequency band is a frequency band where a vehicle horn is located;

[0017] The determining, based on the strength of the first sound signal and the strength of the second sound signal, whether there is a vehicle coming from the direction of the road where the street lamp is located and heading toward the street lamp comprises:

[0018] When the first intensity is less than the second intensity, it is determined that a vehicle is approaching the street lamp from the direction of oncoming traffic on the side of the road where the street lamp is located;

[0019] When the third intensity is less than the fourth intensity, it is determined that a vehicle is approaching the street lamp from the direction of oncoming traffic on the side of the road where the street lamp is located.

[0020] In combination with the first aspect, in some optional implementations, determining the strength of the first sound signal and the strength of the second sound signal includes:

[0021] Determine a first intensity of the first sound signal within a first preset frequency band and a third intensity of the first sound signal within a second preset frequency band, and determine a type of the first sound signal from a preset type group according to the first intensity and the third intensity, wherein the first preset frequency band is a frequency band where tire noise is located, and the second preset frequency band is a frequency band where a vehicle horn is located, and the preset type group includes: a tire noise type and a horn type, wherein the tire noise type corresponds to the first preset frequency band, and the horn type corresponds to the second preset frequency band;

[0022] Determine a second intensity of the second sound signal within the first preset frequency band and a fourth intensity of the second sound signal within the second preset frequency band, and determine a type of the second sound signal from the preset type group according to the second intensity and the fourth intensity;

[0023] The determining, based on the strength of the first sound signal and the strength of the second sound signal, whether there is a vehicle coming from the direction of the road where the street lamp is located and heading toward the street lamp comprises:

[0024] Determine a first type among the types of the second sound signal that is the same as the type of the first sound signal, and when the intensity of the first sound signal in a preset frequency band corresponding to the first type is less than the intensity of the second sound signal in the preset frequency band corresponding to the first type, it is determined that a vehicle is approaching the street lamp from the direction of oncoming traffic on the side of the road where the street lamp is located.

[0025] In combination with the previous embodiment, in some optional embodiments, the method further includes:

[0026] When there is no type of the second sound signal that is the same as the type of the first sound signal, directionally collect a third sound signal from the direction of the oncoming vehicle on the side of the road where the street lamp is located, wherein the collection time of the third sound signal is a third time, and the second time is earlier than the third time;

[0027] Obtaining a fifth intensity of the third sound signal within the first preset frequency band and a sixth intensity of the third sound signal within the second preset frequency band;

[0028] determining a type of the third sound signal from the preset type group according to the fifth intensity and the sixth intensity;

[0029] determining whether there is a second type that is the same as the type of the first sound signal among the types of the third sound signal; if there is a second type that is the same as the type of the first sound signal among the types of the third sound signal, determining that a vehicle is approaching the street lamp from the direction of oncoming vehicles on the side of the road where the street lamp is located when the intensity of the first sound signal in a preset frequency band corresponding to the second type is less than the intensity of the third sound signal in the preset frequency band corresponding to the second type;

[0030] And / or, determine whether there is a third type among the types of the third sound signal that is the same as the type of the second sound signal. If there is a third type among the types of the third sound signal that is the same as the type of the second sound signal, then when the intensity of the second sound signal in a preset frequency band corresponding to the third type is less than the intensity of the third sound signal in a preset frequency band corresponding to the third type, it is determined that a vehicle is approaching the street lamp from the direction of oncoming traffic on the side of the road where the street lamp is located.

[0031] In a second aspect, a street light control device includes: a first sound signal obtaining unit, a second sound signal obtaining unit, a sound signal strength determining unit, and a street light control unit;

[0032] The first sound signal obtaining unit is used to directionally collect the first sound signal from the direction of the oncoming vehicle on the side of the road where the street lamp is located, wherein the collection time of the first sound signal is the first time;

[0033] The second sound signal obtaining unit is used to directionally collect the second sound signal from the direction of the oncoming vehicle on the side of the road where the street lamp is located, wherein the collection time of the second sound signal is the second time, and the first time is earlier than the second time;

[0034] The sound signal strength determination unit is used to determine the strength of the first sound signal and the strength of the second sound signal;

[0035] The street light control unit is used to determine whether there is a vehicle coming towards the street light from the direction of the road where the street light is located according to the intensity of the first sound signal and the intensity of the second sound signal, and if so, control the street light to light up.

[0036] In combination with the second aspect, in some optional embodiments, the sound signal strength determination unit is specifically used to: determine a first strength of the first sound signal within a first preset frequency band, determine a second strength of the second sound signal within the first preset frequency band; determine a third strength of the first sound signal within a second preset frequency band, determine a fourth strength of the second sound signal within the second preset frequency band, wherein the first preset frequency band is a frequency band where tire noise is located, and the second preset frequency band is a frequency band where a vehicle horn is located;

[0037] The above-mentioned street light control unit is specifically used for: when the first intensity is less than the second intensity, it is determined that there is a vehicle approaching the street light from the direction of oncoming vehicles on the side of the road where the street light is located, and the street light is controlled to be lit; when the third intensity is less than the fourth intensity, it is determined that there is a vehicle approaching the street light from the direction of oncoming vehicles on the side of the road where the street light is located, and the street light is controlled to be lit.

[0038] In conjunction with the second aspect, in certain optional implementations, the sound signal strength determination unit includes: a sound signal strength determination subunit and a sound signal type determination subunit;

[0039] The sound signal strength determination subunit is specifically used to: determine a first strength of the first sound signal within a first preset frequency band and a third strength of the first sound signal within a second preset frequency band, determine a second strength of the second sound signal within the first preset frequency band and a fourth strength of the second sound signal within the second preset frequency band;

[0040] The sound signal type determination subunit is specifically used to: determine the type of the first sound signal from a preset type group according to the first intensity and the third intensity, wherein the first preset frequency band is the frequency band where the tire noise is located, and the second preset frequency band is the frequency band where the whistle sound is located, and the preset type group includes: a tire noise type and a whistle type, wherein the tire noise type corresponds to the first preset frequency band, and the whistle type corresponds to the second preset frequency band; determine the type of the second sound signal from the preset type group according to the second intensity and the fourth intensity;

[0041] The street light control unit is specifically used to: determine a first type among the types of the second sound signal that is the same as the type of the first sound signal; when the intensity of the first sound signal in a preset frequency band corresponding to the first type is less than the intensity of the second sound signal in the preset frequency band corresponding to the first type, it is determined that a vehicle is approaching the street light from the direction of oncoming traffic on the side of the road where the street light is located, and control the street light to light up.

[0042] In a third aspect, a street light control system includes: a microphone, a band pass filter, a band stop filter, a main control chip, a first resistor, a switch circuit and a relay;

[0043] The output end of the microphone is connected to the input end of the bandpass filter;

[0044] The output end of the bandpass filter is connected to the input end of the bandstop filter, and the output end of the bandstop filter is connected to the signal input end of the main control chip;

[0045] The signal output end of the main control chip is connected to the base of the transistor of the switch circuit, the collector of the transistor of the switch circuit is connected to one end of the control side of the relay, the other end of the control side of the relay is connected to one end of the first resistor, the other end of the first resistor is a ground terminal, and the action side of the relay is connected to the street lamp to control the working state of the street lamp;

[0046] The main control chip executes any one of the street light control methods.

[0047] In combination with the third aspect, in some optional embodiments, the system also includes: a memory, the memory is used to store a program, the program is at least used to implement any one of the street light control methods, and the main control chip is connected to the memory to execute the program stored in the memory.

[0048] The present invention provides a street lamp control method, which can perform directional collection of a first sound signal from the direction of an oncoming vehicle on one side of the road where the street lamp is located, wherein the collection time of the first sound signal is the first moment; perform directional collection of a second sound signal from the direction of an oncoming vehicle on one side of the road where the street lamp is located, wherein the collection time of the second sound signal is the second moment, and the first moment is earlier than the second moment; determine the strength of the first sound signal and the strength of the second sound signal; determine whether there is a vehicle from the direction of the oncoming vehicle on the side of the road where the street lamp is located driving towards the street lamp according to the strength of the first sound signal and the strength of the second sound signal, and if so, control the street lamp to light up. It can be seen from this that the present invention can control the lighting of the street lamp on the road on this side according to the change of the strength of the sound signal on the road on this side, and the sound signal generated on the road on this side will not control the lighting of the street lamp on the other side of the road, and the sound occurring on one side of the road only controls the street lamp on the road on this side. Compared with the prior art, the present invention can save energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below.

[0050] Figure 1 A flow chart of a street lamp control method provided by the present invention is shown;

[0051] Figure 2 Another flow chart of a street lamp control method provided by the present invention is shown;

[0052] Figure 3 Another flow chart of a street lamp control method provided by the present invention is shown;

[0053] Figure 4 Another flow chart of a street lamp control method provided by the present invention is shown;

[0054] Figure 5 Another flow chart of a street lamp control method provided by the present invention is shown;

[0055] Figure 6 A schematic diagram showing a use scenario of a street lamp control method provided by the present invention is shown;

[0056] Figure 7 A structural diagram of a street lamp control device provided by the present invention is shown;

[0057] Figure 8 Another structural diagram of a street lamp control device provided by the present invention is shown;

[0058] Fig. 9 A circuit diagram of a street lamp control system provided by the present invention is shown. DETAILED DESCRIPTION

[0059] The present invention discloses a street lamp control method, device and system. Those skilled in the art can refer to the content of this article and appropriately improve the process parameters to achieve it. It should be particularly noted that all similar substitutions and modifications are obvious to those skilled in the art and are considered to be included in the present invention. The method and application of the present invention have been described through preferred embodiments. Relevant personnel can obviously modify or appropriately change and combine the methods and applications described herein without departing from the content, spirit and scope of the present invention to implement and apply the technology of the present invention.

[0060] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0061] In the description of the embodiments of the present application, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present embodiment, unless otherwise specified, "multiple" means two or more.

[0062] Existing voice-controlled street lamps are generally installed on both sides of the road. Since the microphone of each street lamp does not collect sound in a directional manner, but collects all sounds within a certain range from the street lamp, there is an overlapping area in the sound collection range of the microphones of the street lamps on both sides of the road. That is, as long as there are vehicles or pedestrians passing on one side of the road, the street lamps on both sides of the road will light up, wasting energy. Therefore, in order to save energy, the present invention provides a street lamp control method, device and system, which realizes the purpose that the sound occurring on one side of the road can only control the lighting of the street lamp on the side of the road where the sound is located, but cannot control the lighting of the street lamp on the other side of the road.

[0063] like Figure 1 As shown, the present invention provides a street lamp control method, comprising:

[0064] S100, directionally collecting a first sound signal from a direction of an oncoming vehicle on a side of a road where a street lamp is located, wherein a time of collecting the first sound signal is a first time;

[0065] S101, directionally collecting a second sound signal from a direction of an oncoming vehicle on a side of a road where a street lamp is located, wherein the second sound signal is collected at a second moment, and the first moment is earlier than the second moment;

[0066] S102, determining the strength of the first sound signal and the strength of the second sound signal;

[0067] S103, determining whether there is a vehicle coming from the direction of the road where the street lamp is located, according to the strength of the first sound signal and the strength of the second sound signal, and if yes, executing step S104;

[0068] S104: Control the street lamp to light up.

[0069] It should be understood that the street lamp can collect the sound from the direction of the oncoming vehicle on the road side (i.e., the first sound signal) through the microphone. Specifically, the present invention can realize the directional collection of sound through one or more of various forms such as a microphone array or adding a directional sound collecting cover around the microphone. When it is necessary to directional collect the sound signal from the direction of the oncoming vehicle on the side of the road where the street lamp is located, the microphone array or the directional sound collecting cover can be directed toward the direction of the oncoming vehicle on the side of the road where the street lamp is located.

[0070] The sound collected by the microphone of the street lamp on this side of the road can be used only to control the working state of the street lamp on this side of the road. For example, when the sound intensity at the previous moment is less than the sound intensity at the next moment, it can indicate that a vehicle or pedestrian is passing through this side of the road. At this time, the street lamp on this side of the road can be controlled to light up to provide lighting for the vehicle or pedestrian passing through this side of the road.

[0071] Optionally, the determination of the strength of the first sound signal in S102 may be performed after S100 is completed and before S101 is executed, or after both S100 and S101 are executed. For example, the strength of the first sound signal may be determined immediately after the first sound signal is collected, or the strength of the first sound signal and the strength of the second sound signal may be determined after the strength of the second sound signal is collected.

[0072] Optional, Figure 1Step S103 and step S104 may include: when it is determined that the intensity of the second sound signal is greater than the intensity of the first sound signal, it is determined that there is a vehicle approaching the street lamp from the direction of oncoming vehicles on the side of the road where the street lamp is located, and the street lamp is controlled to light up. For example, the street lamp may be controlled to light up for 30 seconds or more, such as 1 minute. The present invention does not limit the preset time length for the street lamp to maintain the lighting state, and any suitable preset time length falls within the protection scope of the present invention. It can be understood that by controlling the street lamp to light up for a period of time, vehicles can be kept in the lighting environment of the street lamp when driving within the illumination range of the street lamp, effectively ensuring the driving safety of the vehicle.

[0073] It should be understood that when the intensity of the second sound signal is greater than the intensity of the first sound signal, it means that the sound is getting louder. This situation means that the vehicle on the street lamp side is driving towards the street lamp, so the street lamp can be controlled to light up in advance to illuminate the road environment in front of the vehicle and provide the driver with good vision lighting.

[0074] It should be understood that when the intensity of the second sound signal is less than the intensity of the first sound signal, it means that the sound is getting smaller. This situation means that the vehicle on the street lamp side is driving away from the street lamp. At this time, the street lamp is located at the rear of the vehicle, and the road environment at the rear of the vehicle is not the target driving direction of the vehicle. For the driver, there is no need for lighting, so there is no need to control the street lamp to light up to save energy.

[0075] Specifically, when a vehicle enters the lighting range of a street lamp on the road on this side, the street lamp can collect the sound signal generated by the vehicle within the lighting range, and determine whether the vehicle is heading towards the street lamp based on the intensity change of the sound signal. If so, the street lamp can be controlled to light up. The working mode of each street lamp can be as follows: Figure 1 When a vehicle is driving on a road on one side, the street lights on the road on the other side will light up when the vehicle enters the lighting range, providing continuous lighting for the driver.

[0076] Since there are not always vehicles passing by on the road, the time for lighting the street lamp each time can be controlled within a certain range. That is, the street lamp is in working state within the preset time, which can be close to the time it takes for a vehicle to pass a street lamp under normal driving conditions. In this way, it can be ensured that when a vehicle passes through the illuminated section of the street lamp, the street lamp can always provide lighting for the driver, and energy can be saved to the maximum extent.

[0077] The above solution can not only provide good lighting for drivers and ensure safety, but also reduce the lighting time of street lamps and save energy.

[0078] Optionally, the preset duration can be fixed or variable. Specifically, the preset duration can match the moving speed of the vehicle. For example, the moving speed of the signal sources of the first sound signal and the second sound signal can be calculated based on the intensity of the first sound signal obtained at the first moment and the intensity of the second sound signal obtained at the second moment, as well as the time difference between the two moments, and the preset duration for the street lamp to maintain the working state can be dynamically set according to the calculated moving speed. For example, the faster the moving speed of the signal source, the shorter the preset duration, and the slower the moving speed, the longer the preset duration. The driving speed of the vehicle can also be obtained based on a speed detection device (such as an existing speed measuring mechanism on the road), and then the lighting duration of the street lamp can be adjusted according to the driving speed.

[0079] The preset duration and speed matching can control the lighting time of the street light according to the speed of different vehicles. If the speed of the vehicle is very fast, the time it takes for the vehicle to pass through the lighting range of the street light may be very short, so the lighting time of the street light can be controlled to be shorter; if the speed of the vehicle is very slow, the time it takes for the vehicle to pass through the lighting range of the street light may be very long, so the lighting time of the street light can be controlled to be longer.

[0080] As shown in the above scheme, under the premise of ensuring that lighting can be provided for drivers, the lighting time of the street lamps is matched with the driving speed of the vehicles, which can reduce the lighting time of the street lamps and reduce energy consumption.

[0081] Optionally, the preset duration can also be fixed. For example, each time a vehicle or pedestrian passing by the road on this side triggers the street lamp on this side to light up, it can maintain the working state for one minute and then automatically cut off the power and enter the non-working state until it is triggered to light up again.

[0082] like Figure 2 As shown, in some optional embodiments, the above method may include:

[0083] S100, directionally collecting a first sound signal from a direction of an oncoming vehicle on a side of a road where a street lamp is located, wherein a time of collecting the first sound signal is a first time;

[0084] S101, directionally collecting a second sound signal from a direction of an oncoming vehicle on a side of a road where a street lamp is located, wherein the second sound signal is collected at a second moment, and the first moment is earlier than the second moment;

[0085] in, Figure 2 Steps S100 and S101 in Figure 1 It is explained in the embodiment shown and will not be described again here.

[0086] S200, determining a first intensity of the first sound signal within a first preset frequency band, and determining a second intensity of the second sound signal within the first preset frequency band;

[0087] Step S200 is Figure 1 A specific implementation of step S102 in .

[0088] S201, when the first intensity is less than the second intensity, it is determined that a vehicle is approaching the street lamp from the direction of the road where the street lamp is located, and step S104 is executed;

[0089] S104: Control the street lamp to light up.

[0090] Step S201 is Figure 1 A specific implementation of step S103 in .

[0091] It should be understood that besides the sound of cars passing by, there are many other ambient sounds around the street lamps, such as the chirping of insects and birds. Therefore, the present invention can control the lighting of the street lamps according to the actual function of the street lamps and the frequency band of the sound emitted by the target lighting object of the street lamps. For example, if the street lamps are installed in the park to illuminate passers-by, the street lamps can be controlled to light up using the sound frequency band of people walking or talking; if the street lamps are installed on both sides of the road or highway, the street lamps can be controlled to light up based on the frequency band of the sound emitted by the car during driving.

[0092] It should be understood that using the frequency band of a specific sound to control the lighting of street lamps is more in line with the actual situation, that is, lighting can be provided for specific objects, animals or people in specific usage scenarios, thereby reducing power consumption.

[0093] It should be understood that the street lamp can be controlled to maintain the working state within a preset time according to the change of the target sound in a certain specific frequency band. The target sound can be tire noise, whistle sound or the sound of people walking. For example, the first intensity of the first sound signal in the first preset frequency band can be the sound intensity of the tire noise in the first sound signal, and the first preset frequency band can be the frequency band of tire noise. Of course, the first preset frequency band can also be the frequency band of whistle sound or the frequency band of the sound of people walking, and the present invention is not limited to this.

[0094] It should be understood that when the first intensity is less than the second intensity, it means that the tire noise or the horn sound or the sound of people walking is gradually increasing. At this time, the street lamp can be controlled to remain on for a certain period of time, that is, the street lamp is controlled to maintain a working state within a preset time.

[0095] Optionally, the street lights can be controlled to light up within a preset time period according to changes in sound signals in a specific frequency band, or the street lights can be controlled to light up within a preset time period according to changes in sound signals in 2, 3 or even more specific frequency bands. The present invention does not impose any restrictions on this.

[0096] like Figure 3As shown, another street lamp control method provided by an embodiment of the present invention may include:

[0097] S100, directionally collecting a first sound signal from a direction of an oncoming vehicle on a side of a road where a street lamp is located, wherein a time of collecting the first sound signal is a first time;

[0098] S101, directionally collecting a second sound signal from a direction of an oncoming vehicle on a side of a road where a street lamp is located, wherein the second sound signal is collected at a second moment, and the first moment is earlier than the second moment;

[0099] Among them, step S100 and step S101 are already Figure 1 It is explained in the embodiment shown and will not be described again here.

[0100] S300, determining a first intensity of the first sound signal within a first preset frequency band, determining a second intensity of the second sound signal within the first preset frequency band; determining a third intensity of the first sound signal within a second preset frequency band, determining a fourth intensity of the second sound signal within the second preset frequency band, wherein the first preset frequency band is a frequency band where tire noise is located, and the second preset frequency band is a frequency band where a vehicle horn is located;

[0101] Step S300 is Figure 1 A specific implementation of step S102 in the illustrated embodiment.

[0102] S301, when the first intensity is less than the second intensity, it is determined that a vehicle is approaching the street lamp from the direction of the road where the street lamp is located, and step S104 is executed;

[0103] S302: When the third intensity is less than the fourth intensity, it is determined that a vehicle is coming from the side of the road where the street lamp is located and is heading towards the street lamp, and step S104 is executed.

[0104] S104: Control the street lamp to light up.

[0105] Step S301 and step S302 are Figure 1 A specific implementation of step S103 in the illustrated embodiment.

[0106] Therefore, when obtaining the sound signal of a car, sound signals of multiple frequency bands can be obtained, and the multiple frequency bands can be integrated to control the lighting of the street lights, so as to avoid the street lights not being lit when a car passes by, thereby improving safety.

[0107] It should be understood that the street lamp can be controlled to maintain the working state within a preset time according to the changes of the sound signals in the two specific frequency bands. For example, the first preset frequency band can be the frequency band of tire noise, and the second preset frequency band can be the frequency band of whistle sound.

[0108] Optional, Figure 3 The execution order of step S301 and step S302 is not limited, and step S301 may be executed first or step S302 may be executed first, or step S301 and step S302 may be executed simultaneously, and the present invention does not limit this. Of course, in a specific embodiment of the present invention, only one of step S301 and step S302 may be executed. For example, when step S301 determines that a vehicle is approaching the street lamp from the direction of the oncoming vehicle on the side of the road where the street lamp is located, step S302 may not be executed. For another example: when step S302 determines that a vehicle is approaching the street lamp from the direction of the oncoming vehicle on the side of the road where the street lamp is located, step S301 may not be executed. When both step S301 and step S302 are executed (whether executed sequentially or simultaneously), as long as one of the two steps determines that a vehicle is approaching the street lamp from the direction of the oncoming vehicle on the side of the road where the street lamp is located, step S104 may be triggered for execution.

[0109] It should be understood that tire noise may always exist during the driving of the car, but the horn sound may not always exist. Although tire noise always exists, the intensity of tire noise is related to many factors such as the driving speed of the vehicle, tire structure and road conditions, so the intensity of tire noise may be too small. By comparing the intensity of sound signals in the same frequency band, the accuracy of street light control can be effectively improved.

[0110] Optionally, the present invention does not limit the sound signals in these two specific frequency bands, and any feasible sound signal in a specific frequency band may be an optional implementation of the present invention.

[0111] Optionally, when the first intensity is less than the second intensity, it is determined that a vehicle is approaching the streetlight from the direction of oncoming vehicles on the side of the road where the streetlight is located, and the streetlight is controlled to light up. Alternatively, when the third intensity is less than the fourth intensity, it is determined that a vehicle is approaching the streetlight from the direction of oncoming vehicles on the side of the road where the streetlight is located, and the streetlight is controlled to light up. Alternatively, when the first intensity is less than the second intensity and the third intensity is less than the fourth intensity, it is determined that a vehicle is approaching the streetlight from the direction of oncoming vehicles on the side of the road where the streetlight is located, and the streetlight is controlled to light up.

[0112] Optionally, when the street lamp cannot be controlled to light up according to the intensity of the first sound signal and the intensity of the second sound signal, a third sound signal can be collected and the intensity of the third sound signal can be obtained, and then the working state of the street lamp can be controlled according to the intensity of the third sound signal and the intensity of the first sound signal or according to the intensity of the third sound signal and the intensity of the first sound signal.

[0113] Optionally, when the street lamp cannot be controlled to light up according to the intensity of the first sound signal and the intensity of the second sound signal, a third sound signal and a fourth sound signal can also be collected, and the intensity of the third sound signal and the intensity of the fourth sound signal can be obtained, and then the street lamp can be controlled to maintain a working state within a preset time period according to the intensity of the third sound signal and the intensity of the fourth sound signal.

[0114] like Figure 4 As shown, in some optional implementations, another street lamp control method provided by an embodiment of the present invention may include:

[0115] S100, directionally collecting a first sound signal from a direction of an oncoming vehicle on a side of a road where a street lamp is located, wherein a time of collecting the first sound signal is a first time;

[0116] S101, directionally collecting a second sound signal from a direction of an oncoming vehicle on a side of a road where a street lamp is located, wherein the second sound signal is collected at a second moment, and the first moment is earlier than the second moment;

[0117] Among them, step S100 and step S101 are already Figure 1 It is explained in the embodiment shown and will not be described again here.

[0118] S400, determining a first intensity of the first sound signal within a first preset frequency band and a third intensity of the first sound signal within a second preset frequency band, and determining a type of the first sound signal from a preset type group according to the first intensity and the third intensity, wherein the first preset frequency band is a frequency band where tire noise is located, and the second preset frequency band is a frequency band where a vehicle horn is located, and the preset type group includes: a tire noise type and a horn type, wherein the tire noise type corresponds to the first preset frequency band, and the horn type corresponds to the second preset frequency band;

[0119] Specifically, whether the sound signal includes the type corresponding to the preset frequency band can be determined based on whether the intensity of the sound signal in the preset frequency band is greater than the intensity threshold. For example, whether the first sound signal includes the tire noise type can be determined based on whether the first intensity of the first sound signal in the first preset frequency band is greater than the tire noise intensity threshold. If it is greater, it is determined that the tire noise type is included; otherwise, it is determined that the tire noise type is not included.

[0120] S401, determining a second intensity of the second sound signal within the first preset frequency band and a fourth intensity of the second sound signal within the second preset frequency band, and determining a type of the second sound signal from the preset type group according to the second intensity and the fourth intensity;

[0121] Steps S400 and S401 are Figure 1Step S102 of the embodiment is a specific implementation method.

[0122] S402, determining a first type of the second sound signal that is the same as the first sound signal, and when the intensity of the first sound signal in the preset frequency band corresponding to the first type is less than the intensity of the second sound signal in the preset frequency band corresponding to the first type, it is determined that a vehicle is approaching the street lamp from the direction of oncoming vehicles on the side of the road where the street lamp is located, and executing step S104;

[0123] S104: Control the street lamp to light up.

[0124] Step S402 is Figure 1 Step S103 of the embodiment is a specific implementation method.

[0125] It should be understood that a vehicle may stop or honk for a short time during driving, that is, the collected sound signal may include tire noise or honking sound, or may include tire noise and honking sound. Therefore, after collecting the sound signal, it is necessary to determine whether the sound signal includes tire noise or honking sound, that is, to determine the type of the sound signal. Only when the first sound signal and the second sound signal include the same type of sound can the intensity of the same sound be compared. This can prevent the vehicle leaving the street lamp from honking and causing the street lamp to light up.

[0126] For example: a vehicle is leaving the streetlight in the direction of oncoming traffic on one side of the road where the streetlight is located. In the process of the vehicle leaving the streetlight, the present invention first collects the first sound signal at the first moment, and then determines the first intensity of the first sound signal in the frequency band where the tire noise is located (for example, 10 units), and determines the third intensity of the first sound signal in the frequency band where the vehicle horn is located (for example, 0 units, and the vehicle is not honking). The present invention also collects the second sound signal at the second moment, and then determines the second intensity of the second sound signal in the frequency band where the tire noise is located (for example, 5 units), and determines the fourth intensity of the second sound signal in the frequency band where the vehicle horn is located (for example, 50 units, and the vehicle is honking). If the intensities of the frequency band where the horn is located are compared, and the third intensity is less than the fourth intensity, it will erroneously determine that a vehicle is driving towards the streetlight in the direction of oncoming traffic on the side of the road where the streetlight is located, causing the streetlight to be lit, wasting electricity. Figure 4 The method shown will determine that the type of the first sound signal is the tire noise type according to the first intensity and the third intensity, and correspondingly, the type of the second sound signal can also be determined to be the tire noise type and the horn type according to the second intensity and the fourth intensity. Then step S402 will determine whether there is a vehicle coming from the direction of the road where the street lamp is located and heading towards the street lamp by comparing the intensity of the first sound signal and the second sound signal in a preset frequency band (i.e., the frequency band where the tire noise is located) corresponding to the same type (i.e., the tire noise type) with the intensity of the first sound signal and the second sound signal.

[0127] It should be understood that comparing the intensity of the same type of sound can improve the accuracy of controlling the street lamp and avoid lighting the street lamp when it is not necessary. For example, the sound intensity of a horn is generally greater than the tire noise intensity. If the intensity of the same type of sound is not compared, a car honks while driving away from a street lamp. Since the horn sound is greater than the tire noise, the street lamp may be lit. However, in this case, the street lamp may not be lit.

[0128] It should be understood that a sound signal may include multiple or one type in the preset type group, for example, it may include only the tire noise type or the whistle type, or it may include both the tire noise type and the whistle type.

[0129] Optionally, in practice, the preset type group may be established in advance, or may be the type group disclosed in the present invention.

[0130] Optionally, the types in the preset type group may correspond to the frequency bands one by one, for example, the tire noise type may correspond to the frequency band of the tire noise, and the horn type may correspond to the frequency band of the horn sound.

[0131] Optionally, the first preset frequency band may be a frequency band of tire noise, and the second preset frequency band may be a frequency band of whistle sound.

[0132] Optionally, the sound intensity of the first sound signal in the frequency band of tire noise and the sound intensity in the frequency band of whistle sound can be determined. When the sound intensity of the first sound signal in the frequency band of tire noise is greater than a certain tire noise intensity threshold, it can be determined that the first sound signal has a tire noise type; when the sound intensity of the first sound signal in the frequency band of whistle sound is greater than a certain whistle sound intensity threshold, it can be determined that the first sound signal has a whistle type. Similarly, it can be determined whether the second sound signal has a tire noise type or a whistle type, or both types.

[0133] Optionally, when both the first sound signal and the second sound signal have tire noise types, if it is determined that the sound intensity of the first sound signal in the frequency band of tire noise corresponding to the tire noise type is less than the sound intensity of the second sound signal in the frequency band of tire noise corresponding to the tire noise type, the street lights can be controlled to light up.

[0134] Optionally, the first type may be a tire noise type or a horn type, and of course may be other possible types, which are not limited in the present invention.

[0135] like Figure 5 As shown, in some optional embodiments, Figure 4 The method shown may also include:

[0136] S500: When there is no type of the second sound signal that is the same as the type of the first sound signal, directionally collect a third sound signal from the direction of the oncoming vehicle on the side of the road where the street lamp is located, wherein the collection time of the third sound signal is a third time, and the second time is earlier than the third time;

[0137] S501, obtaining a fifth intensity of the third sound signal within the first preset frequency band and a sixth intensity of the third sound signal within the second preset frequency band;

[0138] S502: Determine a type of the third sound signal from the preset type group according to the fifth intensity and the sixth intensity;

[0139] S503, determining whether there is a second type that is the same as the type of the first sound signal among the types of the third sound signal, and if there is a second type that is the same as the type of the first sound signal among the types of the third sound signal, when the intensity of the first sound signal in the preset frequency band corresponding to the second type is less than the intensity of the third sound signal in the preset frequency band corresponding to the second type, it is determined that a vehicle is approaching the street lamp in the direction of oncoming vehicles on the side of the road where the street lamp is located, and executing step S104;

[0140] S504, determining whether there is a third type that is the same as the type of the second sound signal among the types of the third sound signal, and if there is a third type that is the same as the type of the second sound signal among the types of the third sound signal, when the intensity of the second sound signal in the preset frequency band corresponding to the third type is less than the intensity of the third sound signal in the preset frequency band corresponding to the third type, it is determined that a vehicle is approaching the street lamp from the direction of oncoming vehicles on the side of the road where the street lamp is located, and executing step S104;

[0141] Among them, only one of step S503 and step S504 may be executed, or both may be executed, which is not limited in the present invention.

[0142] S104: Control the street lamp to light up.

[0143] It should be understood that when the first sound signal and the second sound signal do not have the same type of sound signal, the third sound signal can be collected. For example, the first sound signal only includes the tire noise type in the preset type group, and the second sound signal only includes the whistle type in the preset type group. In this case, the third sound signal can be collected and it is determined which type in the preset type group the third sound signal includes.

[0144] It should be understood that after determining that there is a sound signal of the same type between the two sound signals, it is then determined whether the sound intensity of the sound signal of the same type is gradually increasing. That is, it is determined whether the sound intensity of the sound signal of the same type at an earlier time is less than the sound intensity of the sound signal of the same type at a later time. If it is less, it can be said that the sound intensity of the sound signal of the same type is gradually increasing, and the street lamp can be controlled to maintain the working state within the preset time, that is, the street lamp is controlled to light up.

[0145] By collecting the third sound signal, it is possible to ensure that there are two sound signals of the same type among the three sound signals with a high probability. The working state of the street lamp can be controlled according to the change in the intensity of the sound signals of the same type in the two sound signals. There may be the following three situations:

[0146] Case a: The third sound signal and the first sound signal are of the same type, and the same type is assumed to be the second type.

[0147] Optionally, if the second type is a tire noise type, it can be determined whether the intensity of the tire noise of the first sound signal is less than the intensity of the tire noise of the third sound signal, and if so, the street lamp is controlled to maintain the working state within a preset time. Of course, the second type can also be a whistle type or other feasible types.

[0148] Optionally, if the intensity of the third sound signal in the preset frequency band corresponding to the second type is less than the intensity of the first sound signal in the preset frequency band corresponding to the second type, the street lamp may not be controlled to light up.

[0149] Case b: The third sound signal and the second sound signal are of the same type, and the same type is referred to as the third type.

[0150] Optionally, if the third type is a whistle type, it can be determined whether the intensity of the whistle sound of the second sound signal is less than the intensity of the whistle sound of the third sound signal, and if so, the street lamp is controlled to maintain the working state within a preset time. Of course, the third type can also be a tire noise type or other feasible types.

[0151] Optionally, if the intensity of the third sound signal in the preset frequency band corresponding to the third type is less than the intensity of the second sound signal in the preset frequency band corresponding to the third type, the street lamp may not be controlled to light up.

[0152] Case c: the third sound signal not only has the same second type as the first sound signal, but also has the same third type as the second sound signal. The second type and the third type can be the same type or two different types, and the present invention does not limit this.

[0153] For situation c, it can be handled in the way of situation a or situation b, or it can be handled in a combination of situation a and situation b to set appropriate conditions to control the street lamp to maintain the working state within the preset time.

[0154] like Figure 6 As shown, optionally, in a specific embodiment, the vehicle 100 moves in the direction of the arrow on the side of the road A. When the vehicle 100 enters the fixed area 200 where the microphone of the street lamp 300 collects sound, the microphone of the street lamp 300 can collect the first sound signal of the vehicle 100 at the first moment. The sound signal at the first moment can include a tire noise sound signal of the first sound signal of the vehicle 100, and / or a whistle sound signal of the first sound signal of the vehicle 100.

[0155] After the first sound signal is collected, the first sound signal may be processed to obtain the intensity and frequency band of the tire noise signal of the first sound signal and / or the intensity and frequency band of the whistle sound signal of the first sound signal.

[0156] After a certain time interval of collecting the first sound signal, the microphone of the street lamp 300 may collect a second sound signal of the vehicle 100 at a second moment, and the second sound signal at the second moment may include a tire noise sound signal of the second sound signal of the vehicle 100 and / or a horn sound signal of the second sound signal of the vehicle 100;

[0157] After the second sound signal is collected, the second sound signal may be processed to obtain the intensity and frequency band of the tire noise signal of the second sound signal and / or the intensity and frequency band of the whistle sound signal of the second sound signal;

[0158] It may be determined whether the first sound signal and the second sound signal both include a tire noise signal or a whistle sound signal according to the frequency band and the intensity of the sound signal. The determination result may include the following situations:

[0159] Case 1: Both the first sound signal and the second sound signal include tire noise signals;

[0160] Case 2: Both the first sound signal and the second sound signal include whistle sound signals;

[0161] Case 3: Both the first sound signal and the second sound signal include a tire noise signal and a whistle sound signal;

[0162] When the determination result is case 1, it can be determined whether the strength of the tire noise signal of the first sound signal is less than the strength of the tire noise signal of the second sound signal. If so, the street lamp 300 can be controlled to maintain the working state within a preset time.

[0163] When the determination result is case 2, it can be determined whether the intensity of the whistle sound signal of the first sound signal is less than the intensity of the whistle sound signal of the second sound signal. If so, the street lamp 300 can be controlled to maintain the working state within a preset time.

[0164] When the result is determined to be situation 3, the method of situation 1 or situation 2 can be adopted, or situation 1 and situation 2 can be judged at the same time. As long as the judgment of one situation meets the conditions, the street lamp 300 is controlled to maintain the working state within the preset time. Alternatively, the street lamp 300 can be controlled to maintain the working state within the preset time only when the judgment of both situations meets the conditions for lighting the street lamp 300.

[0165] If situation 1, situation 2 or situation 3 occurs, and the conditions that the street light can be controlled to maintain working status within the preset time are not met in this situation, it means that situation A or situation B may occur;

[0166] Case A: the first sound signal includes a tire noise signal but does not include a whistle sound signal; the second sound signal includes a whistle sound signal but does not include a tire noise signal.

[0167] Case B: the first sound signal does not include a tire noise signal but includes a whistle sound signal; the second sound signal does not include a whistle sound signal but includes a tire noise signal.

[0168] In either case A or B, the third sound signal of the vehicle 100 may be collected, and the third sound signal may be processed to determine whether the third sound signal includes the intensity and frequency band of the tire noise sound signal and / or the intensity and frequency band of the whistle sound signal of the third sound signal;

[0169] If the third sound signal includes the strength and frequency band of the tire noise signal, but does not include the strength and frequency band of the whistle sound signal, then in case A, it can be determined whether the strength of the tire noise signal of the first sound signal is less than the strength of the tire noise signal of the third sound signal. If so, the street lamp 300 can be controlled to maintain the working state within the preset time. In case B, it can be determined whether the strength of the tire noise signal of the second sound signal is less than the strength of the tire noise signal of the third sound signal. If so, the street lamp 300 can be controlled to maintain the working state within the preset time.

[0170] If the third sound signal does not include the intensity and frequency band of the tire noise sound signal, but includes the intensity and frequency band of the whistle sound signal, then in case B, it can be determined whether the intensity of the whistle sound signal of the first sound signal is less than the intensity of the whistle sound signal of the third sound signal. If so, the street lamp 300 can be controlled to maintain the working state within the preset time. In case A, it can be determined whether the intensity of the whistle sound signal of the second sound signal is less than the intensity of the whistle sound signal of the third sound signal. If so, the street lamp 300 can be controlled to maintain the working state within the preset time.

[0171] If the third sound signal includes the intensity and frequency band of the tire noise sound signal, and includes the intensity and frequency band of the whistle sound signal, then in case A, it can be determined whether the intensity of the tire noise sound signal of the first sound signal is less than the intensity of the tire noise sound signal of the third sound signal, and it can also be determined whether the intensity of the whistle sound signal of the second sound signal is less than the intensity of the whistle sound signal of the third sound signal. If it is less than, the street lamp 300 can be controlled to maintain the working state within the preset time. In case B, it can be determined whether the intensity of the whistle sound signal of the first sound signal is less than the intensity of the whistle sound signal of the third sound signal, and it can also be determined whether the intensity of the tire noise sound signal of the second sound signal is less than the intensity of the tire noise sound signal of the third sound signal. If it is less than, the street lamp 300 can be controlled to maintain the working state within the preset time.

[0172] It should be understood that the sound emitted by vehicle 100 on the road A side will only be collected by the microphone of the street lamp on the road A side, and the sound collected on the road A side is only used to control the street lamp on the road A side, and will not be used to control the street lamp on the road B side. Figure 6 300, 301, 302 and 303 in the figure may all represent street lamps provided with directional microphones.

[0173] Optionally, a street lamp may be provided with an independent microphone. An independent microphone only collects sound signals in a fixed area on one side of the road. Figure 1 The microphone of the street lamp 300 can collect sound signals within a 200-meter area in the direction of oncoming vehicles on the side of road A.

[0174] like Figure 7 As shown, a street light control device provided by the present invention may include: a first sound signal obtaining unit F100, a second sound signal obtaining unit F200, a sound signal strength determining unit F300 and a street light control unit F400;

[0175] The first sound signal obtaining unit F100 is used to directional collect the first sound signal from the direction of the oncoming vehicle on the side of the road where the street lamp is located, wherein the collection time of the first sound signal is the first time;

[0176] The second sound signal obtaining unit F200 is used to perform directional collection of the second sound signal from the direction of the oncoming vehicle on the side of the road where the street lamp is located, wherein the collection time of the second sound signal is the second time, and the first time is earlier than the second time;

[0177] The sound signal strength determination unit F300 is used to determine the strength of the first sound signal and the strength of the second sound signal;

[0178] The street lamp control unit F400 is used to determine whether there is a vehicle coming towards the street lamp on the side of the road where the street lamp is located according to the intensity of the first sound signal and the intensity of the second sound signal, and if so, control the street lamp to light up.

[0179] Optionally, in some optional implementations, the sound signal strength determination unit F300 is specifically used to: determine a first strength of the first sound signal within a first preset frequency band, and determine a second strength of the second sound signal within the first preset frequency band;

[0180] The street light control unit F400 is specifically used to: when the first intensity is less than the second intensity, determine that there is a vehicle coming from the direction of the road where the street light is located, and drive the street light to light up.

[0181] Optionally, in some optional implementations, the above-mentioned sound signal strength determination unit F300 may be specifically used for:

[0182] Determine a first intensity of the first sound signal within a first preset frequency band, determine a second intensity of the second sound signal within the first preset frequency band; determine a third intensity of the first sound signal within a second preset frequency band, determine a fourth intensity of the second sound signal within the second preset frequency band, wherein the first preset frequency band is a frequency band where tire noise is located, and the second preset frequency band is a frequency band where a vehicle horn is located;

[0183] The above-mentioned street light control unit F400 is specifically used for: when the first intensity is less than the second intensity, it is determined that there is a vehicle approaching the street light from the direction of oncoming vehicles on the side of the road where the street light is located, and the street light is controlled to be lit; when the third intensity is less than the fourth intensity, it is determined that there is a vehicle approaching the street light from the direction of oncoming vehicles on the side of the road where the street light is located, and the street light is controlled to be lit.

[0184] like Figure 8 As shown, optionally, in some optional implementations, the above-mentioned sound signal strength determination unit F300 includes: a sound signal strength determination subunit F301 and a sound signal type determination subunit F302.

[0185] The sound signal strength determination subunit F301 is specifically used to: determine a first strength of the first sound signal within a first preset frequency band and a third strength of the first sound signal within a second preset frequency band, determine a second strength of the second sound signal within the first preset frequency band and a fourth strength of the second sound signal within the second preset frequency band;

[0186] The first sound signal obtaining unit F100 and the second sound signal obtaining unit F200 are already in Figure 7 This is described in the implementation method and will not be repeated here.

[0187] The sound signal type determination subunit F302 is specifically used to: determine the type of the first sound signal from a preset type group according to the first intensity and the third intensity, wherein the first preset frequency band is the frequency band where tire noise is located, the second preset frequency band is the frequency band where the vehicle horn is located, and the preset type group includes: tire noise type and horn type, wherein the tire noise type corresponds to the first preset frequency band, and the horn type corresponds to the second preset frequency band; determine the type of the second sound signal from the preset type group according to the second intensity and the fourth intensity;

[0188] The above-mentioned street lamp control unit F400 is specifically used to: determine the first type of the above-mentioned second sound signal that is the same as the type of the above-mentioned first sound signal; when the intensity of the above-mentioned first sound signal in the preset frequency band corresponding to the above-mentioned first type is less than the intensity of the above-mentioned second sound signal in the preset frequency band corresponding to the above-mentioned first type, it is determined that there is a vehicle approaching the street lamp in the oncoming direction on the side of the road where the street lamp is located, and the street lamp is controlled to light up.

[0189] In combination with the previous embodiment, in some optional embodiments, the device further includes a third sound signal obtaining unit, which is specifically used to: when the type of the second sound signal does not have the same type as the type of the first sound signal, collect a third sound signal from the direction of the vehicle on the side of the road where the street lamp is located at a third moment, wherein the second moment is earlier than the third moment;

[0190] The sound signal strength determination subunit F301 may also be used to: obtain a fifth strength of the third sound signal within the first preset frequency band and a sixth strength of the third sound signal within the second preset frequency band;

[0191] The signal type determination subunit F302 may also be used to: determine the type of the third sound signal from the preset type group according to the fifth intensity and the sixth intensity, determine whether there is a second type that is the same as the type of the first sound signal in the type of the third sound signal, and / or determine whether there is a third type that is the same as the type of the second sound signal in the type of the third sound signal;

[0192] The above-mentioned street lamp control unit F400 can also be used for: if there is a second type of the same type as the above-mentioned first sound signal among the types of the above-mentioned third sound signal, then when the intensity of the above-mentioned first sound signal in the preset frequency band corresponding to the above-mentioned second type is less than the intensity of the above-mentioned third sound signal in the preset frequency band corresponding to the above-mentioned second type, it is determined that a vehicle is approaching the street lamp from the oncoming direction of the road where the street lamp is located, and the street lamp is controlled to light up; if there is a third type of the same type as the above-mentioned second sound signal among the types of the above-mentioned third sound signal, then when the intensity of the above-mentioned second sound signal in the preset frequency band corresponding to the above-mentioned third type is less than the intensity of the above-mentioned third sound signal in the preset frequency band corresponding to the above-mentioned third type, it is determined that a vehicle is approaching the street lamp from the oncoming direction of the road where the street lamp is located, and the street lamp is controlled to light up.

[0193] like Fig. 9 As shown, a street light control system provided by the present application includes: a microphone 100, a band-pass filter 200, a band-stop filter 300, a main control chip 400, a first resistor R1, a switch circuit 500 and a relay 600;

[0194] The output end of the microphone 100 is connected to the input end of the bandpass filter 200;

[0195] The output end of the bandpass filter 200 is connected to the input end of the bandstop filter 300, and the output end of the bandstop filter 300 is connected to the signal input end of the main control chip 400;

[0196] The signal output end of the main control chip 400 is connected to the base of the transistor of the switch circuit 500, the collector of the transistor of the switch circuit 500 is connected to one end of the control side of the relay 600, the other end of the control side of the relay 600 is connected to one end of the first resistor R1, the other end of the first resistor R1 is grounded, and the action side of the relay 600 is connected to the street lamp to control the working state of the street lamp;

[0197] The main control chip executes any one of the above-mentioned street light control methods.

[0198] It should be understood that the microphone 100 can collect sound signals in a fixed direction, and the collected sound signals can be filtered through the bandpass filter 200 and the bandstop filter 300. The main control chip 400 can perform signal processing on the filtered sound signal, and when it is determined according to the signal processing result that the street lamp on this side can be controlled to remain in a working state, the main control chip 400 can output a light control signal to control the street lamp on this side to remain in a working state through the switch circuit 500 and the relay 600.

[0199] Optionally, the switch circuit 500 of the present application can be selected and designed according to relevant parameters of the street lamp and the relay 600, and the present application does not impose any limitation on this.

[0200] Optionally, the model of the main control chip 400 can be selected according to actual needs, such as S905D2, A311D or RK3399. This application does not limit the model of the main control chip 400.

[0201] Optionally, the model of the microphone 100 can be selected according to actual needs, such as BUM4022L-RC8 or BUM6027L-RC-HF. The present application does not limit the model of the microphone 100.

[0202] Optionally, in a specific embodiment, the device further includes: an electrostatic discharge protection device D1, one end of the electrostatic discharge protection device D1 is connected to the output end of the microphone, and the other end is grounded.

[0203] It should be understood that the electrostatic discharge protection device D1 can protect the circuit when the voltage is too large, and can also protect the circuit from being affected by surge current.

[0204] Optionally, the electrostatic discharge protection device D1 may be a varistor, a transient suppression diode, or other feasible electrostatic discharge protection device D1, which is not limited in the present application.

[0205] Optionally, in a specific implementation, the device further includes: a second resistor R2, and the output end of the band-stop filter 300 is connected to the signal input end of the main control chip 400 via the second resistor R2.

[0206] It should be understood that the second resistor R2 can play a role in impedance matching.

[0207] Optionally, the type of the second resistor R2 may be selected according to the total resistance of the main control chip 400 , and the resistance value of the second resistor R2 may be equal to the total resistance value of the main control chip 400 .

[0208] Optionally, in a specific embodiment, the bandpass filter 200 includes: a third resistor R3, a fourth resistor R4, a first capacitor C1 and a second capacitor C2, wherein one end of the third resistor R3 is connected to one end of the first capacitor C1, the other end of the first capacitor C1 is connected to one end of the fourth resistor R4 and to one end of the second capacitor C2, the other end of the third resistor R3 is the input end of the bandpass filter 200, the end of the second capacitor C2 connected to the first capacitor C1 is the output end of the bandpass filter 200, and the other end of the fourth resistor R4 and the other end of the second capacitor C2 are grounded.

[0209] It should be understood that the frequency band of the bandpass filter 200 may include the frequency band of the target sound signal. For example, it may include the frequency band of tire noise and horn sound of a motor vehicle, and of course, it may also include the frequency band of other sound signals. For example, it may include the frequency band of the sound of a person walking, the frequency band of the sound of a person speaking, or the frequency band of the sound emitted by other objects when they move.

[0210] Optionally, the bandpass filter 200 can be designed appropriately according to actual needs, and the present application does not impose any limitation on this.

[0211] Optionally, in a specific embodiment, the band-stop filter 300 includes: a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, a third capacitor C3, a fourth capacitor C4 and a fifth capacitor C5, wherein one end of the fifth resistor R5 is the input end of the band-stop filter 300, the input end of the band-stop filter 300 is connected to the output end of the band-pass filter 200 and to one end of the fourth capacitor C4, the other end of the fifth resistor R5 is connected to one end of the sixth resistor R6 and to one end of the third capacitor C3, the other end of the third capacitor C3 is a ground terminal, the other end of the fourth capacitor C4 is connected to one end of the fifth capacitor C5 and to one end of the seventh resistor R7, the other end of the seventh resistor R7 is a ground terminal, the other end of the fifth capacitor C5 is connected to the other end of the sixth resistor R6, and the end of the sixth resistor R6 connected to the fifth capacitor C5 is the output end of the band-stop filter 300.

[0212] It should be understood that the band stop filter 300 can filter out sound signals other than the target sound signal to obtain the target sound signal. For example, it can filter out sound signals other than tire noise or whistle sound of a motor vehicle to obtain tire noise sound signal or whistle sound signal of the motor vehicle.

[0213] Optionally, the band-stop filter 300 can be designed appropriately according to actual needs, and the present application does not impose any limitation on this.

[0214] Optionally, the band-stop filter 300 and the band-pass filter 200 may be connected to form a dual band-pass filter. For example, the output end of the band-pass filter 200 may be connected to the input end of the band-stop filter 300, thereby forming a dual band-pass filter.

[0215] Optionally, in a specific implementation, the switch circuit 500 includes: an eighth resistor R8, a ninth resistor R9, a tenth resistor R10, a sixth capacitor C6, a seventh capacitor C7 and a transistor Q1;

[0216] One end of the eighth resistor R8 is the control input end of the switch circuit 500, which is connected to the signal output end of the main control chip 400 and to one end of the sixth capacitor C6, and the other end of the sixth capacitor C6 is the ground end. The other end of the eighth resistor R8 is connected to the base of the transistor Q1 and to one end of the ninth resistor R9, and the other end of the ninth resistor R9 is the ground end. One end of the tenth resistor R10 is the external power supply connection end and is connected to one end of the seventh capacitor C7, and the other end of the seventh capacitor C7 is the ground end. The other end of the tenth resistor R10 is connected to the input end of the control side of the relay 600 and to the collector of the transistor Q1, and the emitter of the transistor is the ground end.

[0217] It should be understood that the lighting control signal output by the main control chip 400 can be input into the switch circuit 500 via the control input terminal of the switch circuit 500, and the lighting control signal can control the transistor Q1 in the switch circuit 500 to be in the cut-off state, thereby controlling the current to flow into the control input terminal of the relay 600, and further controlling the street lamp to maintain the working state. For example, when the main control chip 400 outputs a low level, the transistor Q1 can be in the cut-off state, resulting in an increase in the collector potential of the transistor Q1, that is, an increase in the potential of the control input terminal of the relay 600, and at this time the street lamp can be controlled to be in the working state.

[0218] Optionally, the model of relay 600 can be selected according to the model of the street lamp. The model of relay 600 can be selected according to the actual needs, such as JZX-22F or CDCH8S. Any relay 600 suitable for this application or a device with a similar function to relay 600 belongs to the optional implementation mode of this application.

[0219] Optionally, in a specific implementation, the microphone 100 is a microphone array.

[0220] It should be understood that the directional sound pickup effect of the microphone array is stronger than that of an ordinary microphone, and the use of a microphone array for directional sound pickup is a preferred embodiment of the present application.

[0221] Optionally, a suitable microphone array may be selected according to actual needs. For example, a microphone array in which the microphones are arranged in a ring may be selected, or a microphone array in which the microphones are arranged in a linear manner may be selected. Any feasible microphone array is an optional implementation mode of the present application, and the present application does not limit this.

[0222] Optionally, one switch circuit 500 may be connected to one relay 600 or may be connected to multiple relays 600, which is not limited in the present application.

[0223] Optionally, in a specific embodiment, the device further includes: a sound collecting cover, and the microphone array is arranged inside the sound collecting cover.

[0224] It should be understood that the sound collecting cover can isolate other sound signals around the microphone array except for the direction of the microphone array, so that the microphone array can more accurately obtain the sound signal in the target direction. Figure 2 The direction of the arrow in the middle indicates obtaining the sound of a fixed external area.

[0225] Optionally, the size and shape of the sound collecting cover can be designed according to the microphone array or actual situation, and the present application does not limit this. Any feasible size and shape belongs to the optional implementation mode of the present application.

[0226] Optionally, the present application does not limit the fixing method of the sound collecting cover and the microphone array, and any feasible fixing method belongs to the optional implementation mode of the present application.

[0227] Optionally, in a specific embodiment, the sound collecting cover faces the direction of oncoming vehicles on the road side where the microphone array is located.

[0228] Optionally, the sound collecting cover and the microphone array can be arranged on the roadside or on a street lamp.

[0229] In some optional embodiments, the system further includes: a memory, the memory is used to store a program, the program is used to implement at least any one of the street light control methods, and the main control chip is connected to the memory to execute the program stored in the memory.

[0230] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0231] Each embodiment in this specification is described in a related manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the device and system embodiments, since they are basically similar to the method embodiments, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiments.

[0232] The above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention are included in the protection scope of the present invention.

Claims

1. A street lamp control method, characterized in that: include: Directionally collecting a first sound signal from a direction of an oncoming vehicle on one side of a road where the street lamp is located, wherein the first sound signal is collected at a first moment; Directionally collecting a second sound signal from the direction of an oncoming vehicle on one side of the road where the street lamp is located, wherein the second sound signal is collected at a second moment, and the first moment is earlier than the second moment; determining a strength of the first sound signal and a strength of the second sound signal; Determine whether there is a vehicle coming from the direction of the road where the street lamp is located, according to the strength of the first sound signal and the strength of the second sound signal, and if yes, control the street lamp to light up; Wherein, when the type of the second sound signal does not exist in the same type as the type of the first sound signal, a third sound signal from the direction of the oncoming vehicle on the side of the road where the street lamp is located is directionally collected, wherein the collection time of the third sound signal is a third time, and the second time is earlier than the third time; Obtaining a fifth intensity of the third sound signal within a first preset frequency band and a sixth intensity within a second preset frequency band; wherein the first preset frequency band is a frequency band where tire noise is located, and the second preset frequency band is a frequency band where vehicle horn sound is located; Determining the type of the third sound signal from a preset type group according to the fifth intensity and the sixth intensity; wherein the preset type group includes: a tire noise type and a whistle type, wherein the tire noise type corresponds to the first preset frequency band, and the whistle type corresponds to the second preset frequency band; determining whether there is a second type that is the same as the type of the first sound signal among the types of the third sound signal; if there is a second type that is the same as the type of the first sound signal among the types of the third sound signal, determining that a vehicle is approaching the street lamp from the direction of oncoming vehicles on the side of the road where the street lamp is located when the intensity of the first sound signal in a preset frequency band corresponding to the second type is less than the intensity of the third sound signal in the preset frequency band corresponding to the second type; And / or, determine whether there is a third type among the types of the third sound signal that is the same as the type of the second sound signal. If there is a third type among the types of the third sound signal that is the same as the type of the second sound signal, then when the intensity of the second sound signal in a preset frequency band corresponding to the third type is less than the intensity of the third sound signal in a preset frequency band corresponding to the third type, it is determined that a vehicle is approaching the street lamp from the direction of oncoming traffic on the side of the road where the street lamp is located.

2. The method according to claim 1, characterized in that The determining the strength of the first sound signal and the strength of the second sound signal comprises: Determine a first intensity of the first sound signal within a first preset frequency band, and determine a second intensity of the second sound signal within the first preset frequency band; The determining, based on the strength of the first sound signal and the strength of the second sound signal, whether there is a vehicle coming from the direction of the road where the street lamp is located and heading toward the street lamp comprises: When the first intensity is less than the second intensity, it is determined that a vehicle is approaching the street lamp from the direction of oncoming traffic on the side of the road where the street lamp is located.

3. The method according to claim 1, characterized in that The determining the strength of the first sound signal and the strength of the second sound signal comprises: Determine a first intensity of the first sound signal within a first preset frequency band, determine a second intensity of the second sound signal within the first preset frequency band; determine a third intensity of the first sound signal within a second preset frequency band, determine a fourth intensity of the second sound signal within the second preset frequency band; The determining, based on the strength of the first sound signal and the strength of the second sound signal, whether there is a vehicle coming from the direction of the road where the street lamp is located and heading toward the street lamp comprises: When the first intensity is less than the second intensity, it is determined that a vehicle is approaching the street lamp from the direction of oncoming traffic on the side of the road where the street lamp is located; When the third intensity is less than the fourth intensity, it is determined that a vehicle is approaching the street lamp from the direction of oncoming traffic on the side of the road where the street lamp is located.

4. The method according to claim 1, characterized in that: The determining the strength of the first sound signal and the strength of the second sound signal comprises: Determine a first intensity of the first sound signal within a first preset frequency band and a third intensity of the first sound signal within a second preset frequency band, and determine a type of the first sound signal from a preset type group according to the first intensity and the third intensity; Determine a second intensity of the second sound signal within the first preset frequency band and a fourth intensity of the second sound signal within the second preset frequency band, and determine a type of the second sound signal from the preset type group according to the second intensity and the fourth intensity; The determining, based on the strength of the first sound signal and the strength of the second sound signal, whether there is a vehicle coming from the direction of the road where the street lamp is located and heading toward the street lamp comprises: Determine a first type among the types of the second sound signal that is the same as the type of the first sound signal, and when the intensity of the first sound signal in a preset frequency band corresponding to the first type is less than the intensity of the second sound signal in the preset frequency band corresponding to the first type, it is determined that a vehicle is approaching the street lamp from the direction of oncoming traffic on the side of the road where the street lamp is located.

5. A street lamp control device, characterized in that: include: A first sound signal obtaining unit, a second sound signal obtaining unit, a sound signal strength determining unit and a street light control unit; The first sound signal obtaining unit is used to directionally collect the first sound signal from the direction of the oncoming vehicle on the side of the road where the street lamp is located, wherein the collection time of the first sound signal is the first time; The second sound signal obtaining unit is used to directionally collect the second sound signal from the direction of the oncoming vehicle on the side of the road where the street lamp is located, wherein the collection time of the second sound signal is the second time, and the first time is earlier than the second time; The sound signal strength determination unit is used to determine the strength of the first sound signal and the strength of the second sound signal; The street light control unit is used to determine whether there is a vehicle coming from the direction of the road where the street light is located, according to the intensity of the first sound signal and the intensity of the second sound signal, and if so, control the street light to light up; The method further includes a third sound signal obtaining unit, which is specifically used to: when the type of the second sound signal does not exist in the same type as the first sound signal, directionally collect the third sound signal from the direction of the oncoming vehicle on the side of the road where the street lamp is located, wherein the collection time of the third sound signal is a third time, and the second time is earlier than the third time; The sound signal strength determination unit is further used to: obtain a fifth strength of the third sound signal in a first preset frequency band and a sixth strength of the third sound signal in a second preset frequency band; wherein the first preset frequency band is a frequency band where tire noise is located, and the second preset frequency band is a frequency band where vehicle horn sound is located; a signal type determination unit, configured to: determine the type of the third sound signal from a preset type group according to the fifth intensity and the sixth intensity; wherein the preset type group includes: a tire noise type and a whistle type, wherein the tire noise type corresponds to the first preset frequency band, and the whistle type corresponds to the second preset frequency band; The street lamp control unit is further used to: determine whether there is a second type that is the same as the type of the first sound signal among the types of the third sound signal, and if there is a second type that is the same as the type of the first sound signal among the types of the third sound signal, when the intensity of the first sound signal in the preset frequency band corresponding to the second type is less than the intensity of the third sound signal in the preset frequency band corresponding to the second type, determine that a vehicle is approaching the street lamp from the direction of oncoming vehicles on the side of the road where the street lamp is located; And / or, determine whether there is a third type among the types of the third sound signal that is the same as the type of the second sound signal. If there is a third type among the types of the third sound signal that is the same as the type of the second sound signal, then when the intensity of the second sound signal in a preset frequency band corresponding to the third type is less than the intensity of the third sound signal in a preset frequency band corresponding to the third type, it is determined that a vehicle is approaching the street lamp from the direction of oncoming traffic on the side of the road where the street lamp is located.

6. The device according to claim 5, characterized in that The sound signal strength determination unit is specifically used to: determine a first strength of the first sound signal within a first preset frequency band, determine a second strength of the second sound signal within the first preset frequency band; determine a third strength of the first sound signal within a second preset frequency band, determine a fourth strength of the second sound signal within the second preset frequency band, wherein the first preset frequency band is a frequency band where tire noise is located, and the second preset frequency band is a frequency band where a vehicle horn is located; The street light control unit is specifically used to: when the first intensity is less than the second intensity, determine that there is a vehicle coming towards the street light from the direction of the road where the street light is located, and control the street light to light up; when the third intensity is less than the fourth intensity, determine that there is a vehicle coming towards the street light from the direction of the road where the street light is located, and control the street light to light up.

7. The device according to claim 5, characterized in that The sound signal strength determination unit comprises: a first determination subunit and a second determination subunit; The first determination subunit is used to determine a first intensity of the first sound signal within a first preset frequency band and a third intensity of the first sound signal within a second preset frequency band, and determine a type of the first sound signal from a preset type group according to the first intensity and the third intensity, wherein the first preset frequency band is a frequency band where tire noise is located, and the second preset frequency band is a frequency band where a vehicle horn is located, and the preset type group includes: a tire noise type and a horn type, wherein the tire noise type corresponds to the first preset frequency band, and the horn type corresponds to the second preset frequency band; The second determining subunit is used to determine a second strength of the second sound signal within the first preset frequency band and a fourth strength of the second sound signal within the second preset frequency band, and determine a type of the second sound signal from the preset type group according to the second strength and the fourth strength; The street light control unit is specifically used to: determine a first type among the types of the second sound signal that is the same as the type of the first sound signal; when the intensity of the first sound signal in a preset frequency band corresponding to the first type is less than the intensity of the second sound signal in the preset frequency band corresponding to the first type, it is determined that a vehicle is approaching the street light from the direction of oncoming traffic on the side of the road where the street light is located, and control the street light to light up.

8. A street light control system, characterized in that: include: A microphone, a bandpass filter, a bandstop filter, a main control chip, a first resistor, a switch circuit and a relay; The output end of the microphone is connected to the input end of the bandpass filter; The output end of the bandpass filter is connected to the input end of the bandstop filter, and the output end of the bandstop filter is connected to the signal input end of the main control chip; The signal output end of the main control chip is connected to the base of the transistor of the switch circuit, the collector of the transistor of the switch circuit is connected to one end of the control side of the relay, the other end of the control side of the relay is connected to one end of the first resistor, the other end of the first resistor is a ground terminal, and the action side of the relay is connected to the street lamp to control the working state of the street lamp; The main control chip executes the street light control method according to any one of claims 1 to 4.

9. The system according to claim 8, characterized in that The system further includes: a memory, the memory is used to store a program, the program is at least used to implement the street light control method according to any one of claims 1 to 4, and the main control chip is connected to the memory to execute the program stored in the memory.

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