Forest fire prevention scanning device

Abstract

The utility model relates to the field of forest fire prevention, in particular to a forest fire prevention scanning device which comprises a temperature and humidity sensor, a controller, a holder and an infrared camera, the temperature and humidity sensor is connected with the input end of the controller and used for transmitting collected temperature and humidity of a forest environment to the controller, and the holder and the infrared camera are connected with the output end of the controller. The holder is used for driving the infrared camera to move, and the infrared camera is used for scanning a forest; an encoder is arranged on the holder, the encoder obtains the position of the holder and transmits the position to the controller, and the controller is connected with the holder stepping motor. The scanning speed is adjusted according to the holder position and the environment temperature and humidity, and hidden risks can be found.

Description

Technical Field

[0001] The utility model relates to the field of forest fire prevention, in particular to a forest fire prevention scanning device. Background Art

[0002] In the field of forest fire prevention, due to the large forest area, the potential for forest fires is high during the hot summer. However, surveillance cameras often cannot cover the entire forest area, so a scanning device is needed to scan the forest area. Existing scanning devices generally only scan between two points, and the speed and angle of the pan / tilt cannot be adjusted in real time based on the position. In addition, environmental factors such as forest temperature and humidity also play a significant role in the formation of fires. When the forest environment changes, the scanning method must also be adjusted accordingly. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a forest fire prevention scanning device, which can adjust the scanning speed according to the position of the pan / tilt table and the ambient temperature and humidity, and can discover hidden risks.

[0004] In order to solve the technical problem, the technical solution adopted by the utility model is: a forest fire prevention scanning device, including a temperature and humidity sensor, a controller, a pan-tilt head and an infrared camera. The temperature and humidity sensor is connected to the input end of the controller and is used to transmit the collected temperature and humidity of the forest environment to the controller. The pan-tilt head and the infrared camera are connected to the output end of the controller. The pan-tilt head is used to drive the infrared camera to move, and the infrared camera is used to scan the forest; an encoder is provided on the pan-tilt head, the encoder obtains the position of the pan-tilt head and transmits it to the controller, and the controller is connected to the pan-tilt head stepper motor.

[0005] Furthermore, PWM is used to control the pan-tilt stepper motor. The controller connects the pan-tilt stepper motor phase lines A and A', and phase lines B and B' through connector J3. Phase lines A and A' are used to control the stepper motor to rotate clockwise and counterclockwise, and phase lines B and B' are used to control the stepper motor to rotate clockwise or counterclockwise by a step angle.

[0006] Furthermore, the controller is connected to the pan-tilt encoder through connector J1, which is provided with A line, B line, Z line, shielding line, power line and ground line. The A line and B line are used to transmit the rotation direction and rotation angle. When the pan-tilt rotates one circle, the Z line sends a pulse signal. The shielding line is used to reduce external magnetic field interference. The power line and ground line are used for power supply and grounding respectively.

[0007] Furthermore, it also includes a serial communication chip, which is connected between the controller and the thermal imaging part and is used to obtain the fire point information detected by the thermal imaging part.

[0008] Furthermore, the serial communication chip model is MAX3232, the input end of which is connected to the controller, and the output end is connected to the thermal imaging part.

[0009] Furthermore, the controller is an STM32 single chip microcomputer.

[0010] The beneficial effects of the present invention are as follows: the present invention is provided with a temperature and humidity sensor, a controller and a pan-tilt head; the pan-tilt head is provided with an encoder and a stepping motor for driving the pan-tilt head to rotate; the encoder obtains the position of the pan-tilt head and adjusts the rotation speed and angle of the pan-tilt head in real time according to the position of the pan-tilt head; and a temperature and humidity sensor is provided to adjust the rotation speed of the pan-tilt head according to the temperature and humidity. The scanning speed is accelerated for high temperature and low humidity environments, and fires can be discovered more quickly; for low temperature and high humidity environments, the scanning speed can be reduced, and the scanning can be performed more carefully to discover hidden risks. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a principle block diagram of the utility model;

[0012] Figure 2 This is the schematic diagram of the controller;

[0013] Figure 3 Schematic diagram for connecting the pan / tilt stepper motor to connector J3;

[0014] Figure 4 Schematic diagram for connecting the encoder to connector J1;

[0015] Figure 5 This is the schematic diagram of the serial communication chip. DETAILED DESCRIPTION

[0016] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0017] Example 1

[0018] This embodiment discloses a forest fire prevention scanning device, such as Figure 1 As shown, it includes a temperature and humidity sensor, a controller, a pan-tilt head and an infrared camera. The temperature and humidity sensor is connected to the input end of the controller and is used to transmit the temperature and humidity of the forest environment to the controller. The pan-tilt head and the infrared camera are connected to the output end of the controller. The pan-tilt head is used to drive the infrared camera to move, and the infrared camera is used to scan the forest. An encoder is provided on the pan-tilt head, which obtains the position of the pan-tilt head and transmits it to the controller. The controller is connected to the pan-tilt head stepper motor, and the stepper motor drives the pan-tilt head to rotate.

[0019] like Figure 2 As shown, the controller is an STM32 microcontroller, and its interfaces PWM_H1, PWM_H2, PWM_V1 and PWM_V2 are connected to the pan-tilt stepper motor through connector J3, as shown in Figure 3As shown, PWM is used to control the stepper motor. PWM_H1 and PWM_H2 are the phase lines A and A' of the stepper motor, which are used to control clockwise and counterclockwise rotation. PWM_V1 and PWM_V2 are the phase lines B and B' of the stepper motor, which can control the stepper motor to rotate clockwise or counterclockwise by a step angle.

[0020] like Figure 4 As shown, the controller and the pan-tilt encoder are connected through connector J1. Connector J1 is equipped with A line, B line, Z line, shielding line, power line and ground line. A line and B line are used to transmit the rotation direction and rotation angle. When the pan-tilt rotates one circle, the Z line sends a pulse signal. The shielding line is used to reduce external magnetic field interference. The power line and ground line are used for power supply and grounding respectively.

[0021] like Figure 5 As shown, the system also includes a serial communication chip, connected between the controller and the thermal imaging unit, to obtain fire point information detected by the thermal imaging unit. Specifically, the serial communication chip is a MAX3232, with its input connected to the controller and its output connected to the thermal imaging unit. The thermal imaging unit performs real-time detection, enabling immediate fire point information and location.

[0022] The scanning device described in this embodiment obtains the temperature and humidity in the environment through the temperature and humidity sensor, controls the pan-tilt head so that the infrared camera sets the scanning area facing the forest area, and then controls the pan-tilt head to scan, obtains the image grayscale value based on the infrared camera, and obtains the temperature based on the image grayscale value of the scanning area to determine whether there is a fire hazard. The controller can set the key scanning area, and the rotation direction and angle of the stepper motor can also be set. During the rotation, the encoder obtains the pan-tilt head position in real time. When it is about to exceed the scanning range, the pan-tilt head position is adjusted to start a new round of scanning. The risk of fire in an environment with high temperature and low humidity will be greatly increased. The scanning speed can be controlled according to the temperature and humidity in the air. In an environment with high temperature and low humidity, the scanning speed can be increased to detect fires more quickly. In an environment with low temperature and high humidity, the scanning speed can be reduced and scanned more carefully to detect hidden risks.

[0023] The above description is only the basic principle and preferred embodiments of the present invention. Improvements and substitutions made by those skilled in the art based on the present invention fall within the scope of protection of the present invention.

Claims

1. A forest fire prevention scanning device, characterized by: It includes a temperature and humidity sensor, a controller, a pan-tilt head and an infrared camera. The temperature and humidity sensor is connected to the input end of the controller and is used to transmit the temperature and humidity of the forest environment to the controller. The pan-tilt head and the infrared camera are connected to the output end of the controller. The pan-tilt head is used to drive the infrared camera to move, and the infrared camera is used to scan the forest. The pan-tilt head is equipped with an encoder, which obtains the position of the pan-tilt head and transmits it to the controller. The controller is connected to the pan-tilt head stepper motor.

2. The forest fire prevention scanning device according to claim 1, characterized in that: Use PWM to control the pan-tilt stepper motor. Connect the controller to the pan-tilt stepper motor's phase lines A and A', and phase lines B and B' through connector J3. Phase lines A and A' are used to control the stepper motor's clockwise and counterclockwise rotation, while phase lines B and B' are used to control the stepper motor's clockwise or counterclockwise rotation by one step angle.

3. The forest fire prevention scanning device according to claim 1, characterized in that: The controller is connected to the pan / tilt encoder through connector J1. Connector J1 is equipped with A line, B line, Z line, shielding line, power line and ground line. A line and B line are used to transmit the rotation direction and rotation angle. When the pan / tilt rotates one circle, the Z line sends a pulse signal. The shielding line is used to reduce external magnetic field interference. The power line and ground line are used for power supply and grounding respectively.

4. The forest fire prevention scanning device according to claim 1, characterized in that: It also includes a serial communication chip, which is connected between the controller and the thermal imaging part and is used to obtain the fire point information detected by the thermal imaging part.

5. The forest fire prevention scanning device according to claim 4, characterized in that: The serial communication chip model is MAX3232, its input end is connected to the controller, and its output end is connected to the thermal imaging part.

6. The forest fire prevention scanning device according to claim 1, characterized in that: The controller is STM32 microcontroller.

Images