Storage and patrol integrated automatic driving patrol vehicle

Abstract

The invention discloses a storage and tour inspection integrated automatic driving tour inspection vehicle which comprises a vehicle frame body and a road recognition assembly arranged at the front end of the vehicle frame body, the outer side wall of the vehicle frame body is oppositely connected with two sets of driving wheels used for moving a vehicle frame, and the front end, close to the vehicle frame, of the vehicle frame body is provided with a driving device connected with the driving wheels at the front end. The frame body is matched with the driving wheels to control vehicle movement and steering lamps, the driving device provides a power source for the driving wheels, and normal running of equipment is guaranteed. The extension recognition mechanism is provided with the detection probe, flexible extension and rotation can be achieved, comprehensive detection of safety factors of different positions and stored product information is achieved, the problem that the detection range of a traditional inspection vehicle is limited is solved, and the inspection vehicle can adapt to the complex storage environment; meanwhile, the fire extinguishing control mechanism is arranged, so that the inspection vehicle can immediately extinguish fire through the spray head when finding potential safety hazards such as a fire source, and the defect that a traditional inspection vehicle can only give an alarm but cannot respond in time is overcome.

Description

Technical Field

[0001] The present invention relates to the technical field of patrol vehicles, and more specifically, to an integrated storage and patrol automatic driving patrol vehicle. Background Art

[0002] In fields such as industrial production and warehousing and logistics, integrated autonomous inspection vehicles for storage and patrol are gradually emerging. Primarily used in processing plants, storage facilities, and outdoor warehouses, these vehicles conduct scheduled, routed autonomous inspections of these areas. They utilize onboard sensors and monitoring equipment, such as cameras, infrared thermal imagers, and gas detectors, to collect real-time environmental data and equipment status information. This data is then transmitted to a monitoring center via wireless communication modules, allowing staff to promptly monitor on-site conditions and achieve efficient oversight of stored products and plant safety. Their operating principle is based on advanced autonomous driving technology and intelligent monitoring systems, relying on high-precision maps, positioning systems, and optimized algorithms to ensure stable operation and precise navigation in complex environments, thereby improving inspection efficiency and quality while reducing labor costs.

[0003] However, with the continuous development of technology, there are some limitations in the patrol vehicles used for storage inspections in the existing technology: most of the current patrol vehicles have relatively simple functions, mainly focusing on patrol monitoring of safety factors in the factory, and are unable to check and inspect storage products in different areas or at different heights in the factory; at the same time, traditional patrol vehicles can check some obvious safety hazards, such as special situations such as small fire sources. Small fire sources may only manifest as weak heat radiation or smoke in the early stages. Traditional patrol vehicles often only have the function of identifying alarm lights, but are not equipped with effective response methods, resulting in the fire source cannot be dealt with in the bud, which may in turn cause serious fire accidents, resulting in huge property losses and safety hazards.

[0004] Therefore, in view of this, the inventor, adhering to many years of rich experience in design, development and actual production in the relevant industry, has researched and improved the existing structure and deficiencies, and provided an integrated storage and patrol autonomous driving inspection vehicle, in order to achieve a more practical and valuable purpose. Summary of the Invention

[0005] To overcome the aforementioned shortcomings of the prior art, embodiments of the present invention provide an integrated autonomous storage and patrol inspection vehicle. This vehicle, equipped with an extendable identification mechanism and a detection probe, can be flexibly extended and rotated to comprehensively detect safety factors and stored product information at different locations. This addresses the limited detection range of traditional inspection vehicles and allows for adaptability to complex storage environments. Furthermore, the fire extinguishing control mechanism enables the inspection vehicle to immediately extinguish fires through sprinklers when a fire source or other safety hazard is discovered, thus addressing the shortcomings of traditional inspection vehicles that can only issue an alarm but cannot respond promptly. In terms of improved safety, the inspection vehicle demonstrates superior performance. The intelligent water storage tank, pump, and booster in the fire extinguishing control mechanism work in conjunction with the sprinklers to ensure that the sprinklers can spray water with sufficient pressure, quickly controlling the fire source, preventing the spread of the fire, and effectively protecting the safety of the factory and stored materials. The detection probe, combined with the steering mechanism, can meet the needs of detecting various extreme locations and can promptly detect hidden safety hazards, such as abnormalities at height or in confined spaces. This further enhances safety management and improves the practicality of the device, thereby addressing the aforementioned issues raised in the background art.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: an integrated storage and patrol automatic driving inspection vehicle, comprising a frame body and a road recognition component arranged at the front end thereof, wherein the outer side walls of the frame body are relatively connected to two sets of driving wheels for frame movement, the frame body is provided with a driving device connected to the front driving wheels near the front end of the frame, the top and bottom of the frame body are respectively connected to an upper car body and a lower car body, the outer side wall of the upper car body near the rear end of the frame body is provided with a fire extinguishing control mechanism, the top of the frame body is provided with an extension recognition mechanism and an external signal receiving unit, the external signal receiving unit is used to connect to an external device, control and view the device in real time or provide an alarm, the interior of the lower car body is provided with a power supply component for increasing the power of the device, and the interior of the frame body is provided with a main control processing unit for collecting and controlling various mechanisms and units for processing and operation; The extension recognition mechanism includes a detection probe, which identifies the safety factors of different positions, storage information of different products and storage conditions, and transmits them to the main control processing unit for centralized processing and verification; The fire extinguishing control mechanism includes a sprinkler, which sends the information of the fire source area identified by the detection probe to the fire extinguishing control mechanism, and processes the fire source in the identified area through the sprinkler.

[0007] Preferably, the fire extinguishing control mechanism includes a driving seat fixedly mounted on the front end of the upper carriage, the driving end of the driving seat is connected to an adjusting seat, the nozzle is rotatably mounted inside the adjusting seat, and the outer wall of the nozzle is connected to a flip motor, and the horizontal and vertical rotation angles of the nozzle are respectively controlled by the driving seat and the flip motor.

[0008] Preferably, the fire extinguishing control structure also includes an intelligent water tank arranged inside the lower compartment, the water outlet end of the water tank is connected to a delivery pipe, the other end of the delivery pipe is connected to a pump, the output end of the pump is connected to a booster, and the other end of the booster is through-connected to the input end of the nozzle.

[0009] Preferably, the output end of the pump and the water inlet end of the hose are commonly connected to a booster for increasing the conveying water pressure of the pipeline and improving the spray stroke of the nozzle.

[0010] Preferably, the extension identification mechanism includes a mounting seat fixedly installed on the top of the frame body, the top of the mounting seat is connected to the driving base, the interior of the driving base is rotatably connected to the first adjusting arm, the upper end of the first adjusting arm is rotatably connected to the fixing seat, the outer side wall of the fixing seat is rotatably connected to the first driving plate, the lower end of the first driving plate is rotatably connected to the second driving plate, and the second driving plate is rotatably installed on the driving base.

[0011] Preferably, the extension identification mechanism also includes a telescopic cylinder fixedly mounted on the top of the fixed seat, the output end of the telescopic cylinder is connected to the steering seat, the internal rotation of the steering seat is connected to the detection probe, one side of the detection probe is connected to the steering gear, and the steering gear is fixedly connected to the steering seat, which is used to cooperate with the detection probe to meet the detection needs in various extreme position conditions.

[0012] Preferably, the power supply component includes an energy storage device arranged inside the lower compartment, one side of the energy storage device is connected to a charging base, the charging base passes through the lower compartment and extends to the outside, and the energy storage device and electrical equipment on the equipment are connected by wires.

[0013] Preferably, the road recognition component includes a fixing plate fixedly mounted on the front end of the upper carriage, and the internal thread of the fixing plate is connected to a recognition probe, and the recognition height of the recognition probe can be adjusted according to actual conditions.

[0014] Preferably, the main control processing unit is electrically connected to the external signal receiving unit, the power supply component, the road recognition component, the extension recognition mechanism and the fire extinguishing control mechanism.

[0015] Preferably, the frame body is provided with a multifunctional illumination light near the front end of the frame for use in dim environments or at night.

[0016] Technical effects and advantages of the present invention: 1. The integrated storage and patrol autonomous driving inspection vehicle of the present invention exhibits significant advantages in terms of functional diversity. Its extension recognition mechanism is equipped with a detection probe that can be flexibly extended and rotated to achieve comprehensive detection of safety factors and stored product information at different locations. This solves the problem of limited detection range of traditional inspection vehicles and can adapt to complex storage environments. At the same time, the fire extinguishing control mechanism enables the inspection vehicle to immediately extinguish fires through sprinklers when safety hazards such as fire sources are discovered, which overcomes the deficiency of traditional inspection vehicles that can only generate alarms but cannot respond in a timely manner. 2. In terms of safety improvement, the patrol vehicle has excellent performance. By setting up an intelligent water tank, pump, booster and sprinkler of the fire extinguishing control mechanism to work together, the sprinkler can spray water with sufficient pressure, quickly control the fire source, prevent the fire from spreading, and effectively protect the safety of the factory and stored materials. Its detection probe, combined with the steering gear, can cope with a variety of extreme position detection needs and can promptly discover hidden safety hazards, such as abnormal situations at high altitudes or in narrow spaces, further enhancing safety management. 3. The efficiency and practicality of the patrol vehicle have also been greatly enhanced. Its main control processing unit will centrally process and verify all kinds of collected information to realize intelligent management and improve patrol efficiency and accuracy. The recognition probe of the road recognition component can adjust the height according to actual conditions to adapt to different road conditions and patrol needs, ensuring the stable operation of the patrol vehicle. The multi-functional illumination lamp provides lighting in dim or night environments to ensure uninterrupted patrol work, while helping to prevent security issues such as theft, improving the overall patrol effect and practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the cross-sectional structure of the main body of the present invention; Figure 3 Schematic diagram of the internal structure of the upper compartment and the lower compartment of the present invention; Figure 4 Schematic diagram of the structure of the stretch recognition mechanism of the present invention; Figure 5 It is a rear view structural schematic diagram of the present invention; Figure 6 This is a schematic diagram of the device control connection structure of the present invention.

[0018] The accompanying drawings are marked as follows: 1. frame body; 2. upper compartment; 3. drive device; 4. drive wheel; 5. lower compartment; 6. energy storage device; 7. charging base; 8. water tank; 9. delivery pipe; 10. pump; 11. supercharger; 12. hose; 13. nozzle; 14. drive base; 15. flip motor; 16. mounting base; 17. drive base; 18. first adjusting arm; 19. fixing base; 20. first drive plate; 21. second drive plate; 22. telescopic cylinder; 23. steering seat; 24. detection probe; 25. fixing plate; 26. identification probe; 27. main control processing unit; 28. external signal receiving unit; 29. ​​multi-function illumination lamp. DETAILED DESCRIPTION

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] As attached Figure 1 To the attached Figure 6 The storage and patrol integrated automatic driving inspection vehicle shown includes a frame body 1 and a road recognition component arranged at its front end. The outer side walls of the frame body 1 are relatively connected to two sets of drive wheels 4 for frame movement. The frame body 1 is provided with a drive device 3 connected to the front end drive wheel 4 near the front end of the frame. The frame body 1 cooperates with the drive wheel 4 to control the movement of the vehicle and the turn signal. The drive device 3 increases the power source for the drive wheel 4 to ensure the normal driving of the equipment. The top and bottom of the frame body 1 are respectively connected to the upper car 2 and the lower car 5. The upper car 2 is provided with a fire extinguishing control mechanism on the outer side wall near the rear end of the frame body 1. The top of the frame body 1 is provided with an extension recognition mechanism and an external signal receiving unit 28. The external signal receiving unit 28 is used Connect external devices, control and view devices in real time or provide alarms. At the same time, multiple external devices can be connected at the same time to improve the safety of equipment use. The interior of the lower car 5 is equipped with a power supply component for increasing the power of the equipment, and the interior of the frame body 1 is equipped with a main control processing unit 27 for collecting and controlling various mechanisms and units for processing and operation; the extension identification mechanism includes a detection probe 24, which identifies safety factors at different locations, storage information and storage conditions of different products through the detection probe 24, and transmits them to the main control processing unit 27 for centralized processing and verification; the fire extinguishing control mechanism includes a sprinkler 13, which sends the identified fire source area information to the fire extinguishing control mechanism through the detection probe 24, and processes the fire source in the identified area through the sprinkler 13.

[0021] In this embodiment, the fire extinguishing control mechanism includes a drive base 14 fixedly mounted at the front end of the upper carriage 2. The drive end of the drive base 14 is connected to an adjustment base. The nozzle 13 is rotatably mounted inside the adjustment base. The outer wall of the nozzle 13 is connected to a tilting motor 15. The horizontal and vertical rotation angles of the nozzle 13 are controlled by the drive base 14 and the tilting motor 15 respectively. The fire extinguishing control structure also includes an intelligent water tank 8 arranged inside the lower compartment 5. The water outlet end of the water tank 8 is connected to a delivery pipe 9, the other end of the delivery pipe 9 is connected to a pump 10, the output end of the pump 10 is connected to a booster 11, the other end of the booster 11 is through-connected to the input end of the nozzle 13, and the output end of the pump 10 and the water inlet end of the hose 12 are jointly connected to the booster 11, which is used to increase the delivery water pressure of the pipeline and improve the spray stroke of the nozzle 13.

[0022] In this embodiment, the extension recognition mechanism includes a mounting base 16 fixedly mounted on the top of the frame body 1, the top of the mounting base 16 is connected to a driving base 17, the interior of the driving base 17 is rotatably connected to a first adjustment arm 18, the upper end of the first adjustment arm 18 is rotatably connected to a fixing base 19, the outer side wall of the fixing base 19 is rotatably connected to a first driving plate 20, the lower end of the first driving plate 20 is rotatably connected to a second driving plate 21, and the second driving plate 21 is rotatably mounted on the driving base 17; The extension identification mechanism also includes a telescopic cylinder 22 fixedly mounted on the top of the fixed seat 19. The output end of the telescopic cylinder 22 is connected to the steering seat 23. The internal rotation of the steering seat 23 is connected to the detection probe 24. One side of the detection probe 24 is connected to a steering gear. The steering gear is fixedly connected to the steering seat 23 and is used to cooperate with the detection probe 24 to meet the detection needs in various extreme position conditions.

[0023] In this embodiment, the power supply component includes an energy storage device 6 arranged inside the lower compartment 5. A charging base 7 is connected to one side of the energy storage device 6. The charging base 7 passes through the lower compartment 5 and extends to the outside. The energy storage device 6 is connected to the electrical equipment on the equipment through wires, thereby providing power to ensure the normal operation of the equipment.

[0024] In this embodiment, the road recognition component includes a fixed plate 25 fixedly installed at the front end of the upper carriage 2. The internal thread of the fixed plate 25 is connected to the recognition probe 26. The recognition height of the recognition probe 26 can be adjusted according to actual conditions. It should be noted that both the detection probe 24 and the recognition probe 26 have functions such as night vision or infrared vision, which provide guarantees for intelligent detection and recognition.

[0025] In this embodiment, the main control processing unit 27 is electrically connected to the external signal receiving unit 28, the power supply component, the road recognition component, the extension recognition mechanism and the fire extinguishing control mechanism. It should be noted that the drive seat 14, the drive base 17 and the second drive plate 21 are all driven by an external motor. By driving the second drive plate 21 to rotate, the first drive plate 20 is driven to push the telescopic cylinder 22 connected to the fixed seat 19 to swing up and down, thereby increasing the swing angle of the detection probe 24 and facilitating actual detection. At the same time, the drive seat 14 and the drive base 17 are respectively used to control the horizontal rotation of the adjustment seat and itself.

[0026] In this embodiment, a multifunctional illumination light 29 is provided at the front end of the frame body 1, which is used in dim environments or at night. It can also capture movable objects to prevent theft.

[0027] The overall operation principle of the integrated automatic driving inspection vehicle for storage and patrol of the present invention is as follows: The inspection vehicle is mainly composed of a frame body 1, an upper car 2, a lower car 5, an extension identification mechanism, a fire extinguishing control mechanism, a road identification component, a power supply component and a main control processing unit 27. After the inspection vehicle is started, the identification probe 26 in the road identification component identifies the road information and guides the frame body 1 to cooperate with the drive wheel 4 to control the movement and steering of the vehicle. The drive device 3 provides a power source for the drive wheel 4 to ensure the normal driving of the equipment. During driving, the detection probe 24 in the extension identification mechanism can be flexibly extended and rotated to identify the safety factors of different locations (including shelves or product stacking places, etc.), different product storage information and storage conditions, and transmit this information to the main control processing unit 27 for centralized processing and verification. At the same time, the external signal receiving unit 28 is used to connect external devices to realize real-time control and viewing of the equipment, or provide an alarm. When the detection probe 24 identifies the fire source area information, the information will be sent to the fire extinguishing control mechanism, and the fire source in the identification area will be processed through the sprinkler 13. The fire extinguishing control mechanism includes a drive seat 14 fixedly installed at the front end of the upper car 2. The drive seat The driving end of 14 is connected to an adjustment seat, and the nozzle 13 is rotatably installed inside the adjustment seat. The outer wall thereof is connected to a flip motor 15, which can control the horizontal and vertical rotation angles of the nozzle 13 respectively. In addition, the fire extinguishing control structure also includes an intelligent water tank 8 arranged inside the lower compartment 5, the water outlet end of the water tank 8 is connected to the delivery pipe 9, the other end of the delivery pipe 9 is connected to the pump 10, the output end of the pump 10 is connected to the booster 11, the other end of the booster 11 is connected to the input end of the nozzle 13, and the output end of the pump 10 is also connected to the water inlet end of the hose 12 The booster 11 is used to increase the water pressure in the pipeline and improve the spray stroke of the nozzle 13. The power supply component provides power guarantee for the normal operation of the entire equipment, including an energy storage device 6 arranged inside the lower compartment 5. A charging base 7 is connected to one side of the energy storage device 6, which passes through the lower compartment 5 and extends to the outside. It is connected to all electrical devices on the equipment through wires. The main control processing unit 27 is electrically connected to the external signal receiving unit 28, the power supply component, the road recognition component, the extension recognition mechanism and the fire extinguishing control mechanism to realize intelligent control and management of the entire inspection vehicle; In dim conditions or at night, the multifunctional illumination lamp 29 provided near the front end of the vehicle frame body 1 will be turned on to provide lighting to ensure uninterrupted inspection work. At the same time, it can also capture the functions of movable objects to prevent theft. Through the coordinated work of the above-mentioned various mechanisms and components, the integrated storage and patrol automatic driving inspection vehicle can complete the inspection task efficiently and safely, overcoming the defects of traditional inspection vehicles such as single function and inability to deal with safety hazards in a timely manner.

[0028] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense, and may refer to mechanical or electrical connections, internal communication between two components, or direct connection. "Up," "down," "left," and "right" are only used to indicate relative positional relationships. When the absolute positions of the objects being described change, the relative positional relationships may also change. Secondly: The drawings of the embodiments disclosed in the present invention only involve structures related to the embodiments disclosed in the present invention. Other structures may refer to conventional designs. The same embodiment and different embodiments of the present invention may be combined with each other without conflict. Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An integrated automatic driving inspection vehicle for storage and patrol, comprising a vehicle frame body (1) and a road identification component arranged at the front end thereof, wherein the outer side walls of the vehicle frame body (1) are connected to two sets of driving wheels (4) for moving the vehicle frame, and a driving device (3) connected to the front driving wheels (4) is provided near the front end of the vehicle frame. The invention is characterized in that: The top and bottom of the vehicle frame body (1) are respectively connected to an upper compartment (2) and a lower compartment (5); a fire extinguishing control mechanism is provided on the outer side wall of the upper compartment (2) near the rear end of the vehicle frame body (1); an extension identification mechanism and an external signal receiving unit (28) are provided on the top of the vehicle frame body (1); the external signal receiving unit (28) is used to connect to an external device, control and view the device in real time or provide an alarm; a power supply component for increasing the power of the device is provided inside the lower compartment (5); and a main control processing unit (27) for collecting and controlling various mechanisms and units for processing and operation is provided inside the vehicle frame body (1); The extension identification mechanism includes a detection probe (24), which identifies safety factors at different locations, storage information of different products and storage conditions through the detection probe (24), and transmits the information to the main control processing unit (27) for centralized processing and verification; The fire extinguishing control mechanism includes a nozzle (13), which sends information about the fire source area identified to the fire extinguishing control mechanism through a detection probe (24), and processes the fire source in the identified area through the nozzle (13).

2. The integrated automatic driving inspection vehicle for storage and patrol according to claim 1 is characterized by: The fire extinguishing control mechanism comprises a driving seat (14) fixedly mounted on the front end of the upper carriage (2); a driving end of the driving seat (14) is connected to an adjusting seat; the nozzle (13) is rotatably mounted inside the adjusting seat; an outer side wall of the nozzle (13) is connected to a flip motor (15); and the horizontal and vertical rotation angles of the nozzle (13) are respectively controlled by the driving seat (14) and the flip motor (15).

3. The integrated automatic driving inspection vehicle for storage and patrol according to claim 2 is characterized by: The fire extinguishing control structure further comprises an intelligent water storage tank (8) arranged inside the lower compartment (5); the water outlet end of the water storage tank (8) is connected to a delivery pipe (9); the other end of the delivery pipe (9) is connected to a pump (10); the output end of the pump (10) is connected to a booster (11); the other end of the booster (11) is connected to the input end of the nozzle (13).

4. The integrated automatic driving inspection vehicle for storage and patrol according to claim 3 is characterized by: The output end of the pump (10) and the water inlet end of the hose (12) are connected to a booster (11) for increasing the water pressure of the pipeline and improving the spray stroke of the nozzle (13).

5. The integrated automatic driving inspection vehicle for storage and patrol according to claim 1 is characterized in that: The stretch identification mechanism comprises a mounting seat (16) fixedly mounted on the top of the vehicle frame body (1); the top of the mounting seat (16) is connected to a driving base (17); the interior of the driving base (17) is rotatably connected to a first adjusting arm (18); the upper end of the first adjusting arm (18) is rotatably connected to a fixing seat (19); the outer side wall of the fixing seat (19) is rotatably connected to a first driving plate (20); the lower end of the first driving plate (20) is rotatably connected to a second driving plate (21); and the second driving plate (21) is rotatably mounted on the driving base (17).

6. The integrated automatic driving inspection vehicle for storage and patrol according to claim 5 is characterized by: The extension identification mechanism further comprises a telescopic cylinder (22) fixedly mounted on the top of the fixed seat (19); the output end of the telescopic cylinder (22) is connected to a steering seat (23); the interior of the steering seat (23) is rotatably connected to a detection probe (24); one side of the detection probe (24) is connected to a steering gear, which is fixedly connected to the steering seat (23) and is used to cooperate with the detection probe (24) to meet detection requirements in various extreme position situations.

7. The integrated automatic driving inspection vehicle for storage and patrol according to claim 1 is characterized in that: The power supply assembly includes an energy storage device (6) arranged inside the lower compartment (5), one side of the energy storage device (6) is connected to a charging seat (7), the charging seat (7) passes through the lower compartment (5) and extends to the outside, and the energy storage device (6) is connected to the electrical equipment on the device through a wire.

8. The integrated automatic driving inspection vehicle for storage and patrol according to claim 1 is characterized by: The road recognition component comprises a fixing plate (25) fixedly mounted on the front end of the upper carriage (2); an identification probe (26) is connected to the internal thread of the fixing plate (25); and the identification height of the identification probe (26) can be adjusted according to actual conditions.

9. The integrated automatic driving inspection vehicle for storage and patrol according to claim 1, characterized in that: The main control processing unit (27) is electrically connected to the external signal receiving unit (28), the power supply component, the road recognition component, the extension recognition mechanism and the fire extinguishing control mechanism.

10. The integrated automatic driving inspection vehicle for storage and patrol according to any one of claims 1 to 9, characterized in that: The frame body (1) is provided with a multifunctional illumination lamp (29) near the front end of the frame, which is used in dim environments or at night.

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