Parking alarm system based on monitoring distance after detection

Abstract

The utility model relates to the field of parking alarm, in particular to a parking alarm system based on detection of a post-monitoring distance, which comprises a post-monitoring device, a parking warning module and a parking braking module, the input end of the post-monitoring device is connected with a power supply, and the output end of the post-monitoring device is grounded; the parking warning module and the parking braking module are connected with a power source through contact input ends of the first normally-open relay and the third normally-open relay respectively, coil input ends of the first normally-open relay and the third normally-open relay are connected with a signal output end of the rear monitoring device, and output ends of the rear monitoring device are grounded. The parking alarm system based on the monitored distance after detection can give an alarm or perform emergency braking according to the distance between a pedestrian and the rear of the loader. The rear monitoring device monitors in real time, when a pedestrian approaches, the alarm gives an alarm, and meanwhile, the instrument panel reminds a driver; and when the pedestrian is closer, the brake switch is turned on, so that the loader is emergently braked, and the safety of the pedestrian is ensured.

Description

Technical Field

[0001] The utility model relates to the field of parking alarms, in particular to a parking alarm system based on post-detection monitoring distance. Background Art

[0002] Loaders are earthwork machines widely used in construction projects such as roads, railways, buildings, hydropower, ports, and mines. They are mainly used to shovel bulk materials such as soil, sand, lime, and coal, and can also do light shoveling of ore and hard soil. By replacing different auxiliary working devices, they can also do bulldozing, lifting, and loading and unloading of other materials such as wood.

[0003] The loader has a large body and is prone to blind spots at the rear of the vehicle. Although rear-view monitoring equipment is installed on existing loaders, the driver cannot focus his attention on the rear-view monitoring display screen during driving, and is therefore unable to identify risks. This poses a huge safety hazard not only to pedestrians on the road, but also to the driver. Summary of the invention

[0004] The utility model aims to provide a parking alarm system based on post-detection monitoring distance to solve the above problems and can send out an alarm or brake according to the distance of pedestrians approaching the rear of a loader to protect the safety of pedestrians.

[0005] To achieve the above-mentioned purpose, the utility model discloses a parking alarm system based on the detection of the rear monitoring distance, which includes a rear monitoring device, a parking warning module and a parking brake module, wherein the input end of the rear monitoring device is connected to a power supply and the output end is grounded, the parking warning module and the parking brake module are connected to a power supply through the contact input ends of the first normally open relay and the third normally open relay respectively, the coil input ends of the first normally open relay and the third normally open relay are both connected to the signal output end of the rear monitoring device, and the output ends are both grounded. The parking alarm system based on the detection of the rear monitoring distance can detect the activities of people within the rear monitoring range, and issue an alarm according to the distance of the people's activities, or turn on the brake switch to make the loader perform emergency braking to protect the safety of pedestrians.

[0006] Preferably, the parking warning module includes an alarm, the input end of the alarm is connected to the output end of the first normally open relay contact, and the output end is grounded, and the parking brake module includes a brake switch, the input end of the brake switch is connected to the output end of the third normally open relay contact, and the output end is grounded. The alarm can sound an alarm to approaching pedestrians, and when pedestrians get closer, the brake switch is turned on, and the loader brakes urgently to protect the safety of pedestrians.

[0007] Preferably, the rear monitoring device includes a first radar and a second radar for monitoring different distances, and the signal output end of the rear monitoring device includes a first radar signal output end and a second radar signal output end, the first radar signal output end is connected to a first normally open relay coil input end, and the second radar signal output end is connected to a third normally open relay coil input end. According to the distance of the pedestrian, the first radar or the second radar sends the first radar signal or the second radar signal to remind the pedestrian or cause the loader to perform emergency braking to protect the pedestrian's safety.

[0008] Preferably, the parking warning module further comprises a dashboard connected in parallel with the warning device. The dashboard can more conveniently issue a reminder to the driver.

[0009] Preferably, the instrument panel input terminal is grounded through the second normally open relay contact terminal, the second normally open relay coil input terminal is connected to the first normally open relay contact output terminal, and the other end is grounded. When a pedestrian approaches, the instrument panel is turned on to prompt the driver to pay attention to the pedestrian behind, making monitoring more convenient.

[0010] Preferably, the power source is a motor, a controller is provided in the rear monitoring device, and the output end of the controller is connected to the input end of the first radar and the second radar. The controller performs voltage reduction so that the voltage at this time is suitable for the voltage supply of the radar.

[0011] Preferably, a power supply fuse is connected between the output end of the motor and the input ends of the rear monitoring device, the parking warning module and the parking brake module to ensure circuit safety.

[0012] In summary, the beneficial effects of the utility model are: the parking alarm system based on the detection rear monitoring distance can issue an alarm or emergency brake according to the distance of the pedestrian from the rear of the loader. The rear monitoring device monitors in real time, and when a pedestrian approaches, the alarm sounds an alarm, and the instrument panel reminds the driver; when the pedestrian is closer, the brake switch is turned on to make the loader brake urgently to ensure the safety of the pedestrian. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall circuit of the utility model.

[0014] In the figure, 1 is the rear monitoring device; 2 is the power supply; 3 is the first normally open relay; 4 is the third normally open relay; 5 is the alarm; 6 is the brake switch; 7 is the second normally open relay; 8 is the first radar signal output terminal; 9 is the second radar signal output terminal; 10 is the instrument panel; 11 is the power supply fuse; 12 is the first radar; 13 is the second radar; 14 is the controller. DETAILED DESCRIPTION

[0015] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0016] The following is a description of preferred embodiments of the present invention in conjunction with the accompanying drawings.

[0017] See attached Figure 1 , a parking alarm system based on detecting the rear monitoring distance, comprising a rear monitoring device 1, a parking warning module and a parking brake module, wherein the input end of the rear monitoring device 1 is connected to a power supply 2, and the output end is grounded, the parking warning module and the parking brake module are connected to the power supply 2 through the contact input ends of the first normally open relay 3 and the third normally open relay 4 respectively, the coil input ends of the first normally open relay 3 and the third normally open relay 4 are both connected to the signal output end of the rear monitoring device 1, and the output ends are both grounded. When the rear monitoring device 1 detects a pedestrian, the parking warning module starts to work to remind the pedestrian; when the pedestrian is closer, the parking brake module starts to work and the loader brakes urgently, thereby protecting the safety of the pedestrian. When the pedestrian is far away from the rear of the loader, the parking warning module and the parking brake module stop working.

[0018] See attached Figure 1 , the rear monitoring device 1 includes a first radar 12 and a second radar 13 for monitoring different distances, and the signal output end of the rear monitoring device 1 includes a first radar signal output end 8 and a second radar signal output end 9, the first radar signal output end 8 is connected to the coil input end of the first normally open relay 3, and the second radar signal output end 9 is connected to the coil input end of the third normally open relay 4. The model of the first radar 12 is LD2420, and the farthest monitoring distance is 8 meters; the model of the second radar 13 is LD303, and the farthest monitoring distance is 3.5 meters. The monitoring range of the first radar 12 is greater than the monitoring range of the second radar 13. When a pedestrian enters the monitoring range of the first radar 12, the first radar 12 sends a first signal, which is transmitted to the parking warning system through the first radar signal output end 8. When the pedestrian approaches further and enters the monitoring range of the second radar 13, the second radar 13 sends a second signal, which is transmitted to the parking brake system through the second radar signal output end 9.

[0019] See attached Figure 1The parking warning module includes an alarm 5, the input end of the alarm 5 is connected to the contact output end of the first normally open relay 3, and the output end is grounded. The parking brake module includes a brake switch 6, the input end of the brake switch 6 is connected to the contact output end of the third normally open relay 4, and the output end is grounded. When a pedestrian enters the monitoring range of the first radar 12 in the rear monitoring device 1, the first radar 12 in the rear monitoring device 1 sends a first signal, the first signal passes through the coil end of the first normally open relay 3, the normally open switch of the first normally open relay 3 is closed, and the alarm 5 is energized to warn the approaching pedestrian. When the pedestrian further approaches the rear of the loader to the monitoring range of the second radar 13, the second radar 13 in the rear monitoring device 1 sends a second signal, the second signal passes through the coil end of the third normally open relay 4, the normally open switch of the third normally open relay 4 is closed, the brake switch 6 is turned on, and the loader brakes urgently to ensure the safety of the pedestrian.

[0020] Refer to the attached Figure 1 The parking warning module also includes an instrument panel 10 connected in parallel with the warning device 5. The input end of the instrument panel 10 is grounded through the contact end of the second normally open relay 7, and the coil input end of the second normally open relay 7 is connected to the contact output end of the first normally open relay 3, and the other end is grounded. After the normally open switch of the first normally open relay 3 is closed, the circuit is energized, and current passes through the coil end of the second normally open relay 7, and the normally open switch of the second normally open relay 7 is closed. The instrument panel 10 has its own power supply, so a path is formed after the normally open switch of the second normally open relay 7 is closed, and the instrument panel 10 displays, giving a reminder to the driver to ensure the safety of pedestrians.

[0021] Refer to the attached Figure 1 , the power supply 2 is a motor, and a controller 14 is provided in the rear monitoring device 1, and the output end of the controller 14 is connected to the signal input end of the rear monitoring device 1. A power supply fuse 11 is connected between the output end of the motor and the input ends of the parking warning module and the parking brake module of the rear monitoring device 1. One end of the controller 14 is connected to the power supply 2, and the other end outputs a high level or a low level according to the control logic to supply power to the first radar 12 and the second radar 13. The power supply fuse 11 can make the circuit power supply safer.

[0022] Refer to the attached Figure 1The working principle of the parking alarm system based on the monitoring distance after detection is that the rear monitoring device 1 monitors the rear of the loader in real time. When a pedestrian approaches and enters the monitoring range of the first radar 12 in the rear monitoring device 1, the first radar 12 sends a first signal, and connects the first normally open relay 3 and the second normally open relay 7 through the first radar signal output terminal 8, thereby connecting the parking warning module, the alarm 5 warns the pedestrian, and the instrument panel 10 reminds the driver. When the pedestrian moves away, the first signal is interrupted and the warning ends. If the pedestrian further approaches the monitoring range of the second radar 13, the second radar 13 sends a second signal, the second radar signal output terminal 9 connects the third normally open relay 4, the parking brake module is turned on, the brake switch 6 is turned on, and the loader performs emergency braking to protect the safety of pedestrians. After the pedestrian moves away, the signal is interrupted and the emergency braking ends.

[0023] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principle of the present invention. These improvements and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. A parking alarm system based on post-detection monitoring distance, characterized in that: The invention comprises a rear monitoring device (1), a parking warning module and a parking brake module, wherein the input end of the rear monitoring device (1) is connected to a power supply (2) and the output end is grounded, the parking warning module and the parking brake module are connected to the power supply (2) via the contact input ends of a first normally open relay (3) and a third normally open relay (4) respectively, the coil input ends of the first normally open relay (3) and the third normally open relay (4) are both connected to the signal output end of the rear monitoring device (1), and the output ends are both grounded.

2. The parking alarm system based on post-detection monitoring distance according to claim 1, characterized in that: The parking warning module comprises an alarm (5), the input end of the alarm (5) being connected to the contact output end of the first normally open relay (3), and the output end being grounded; the parking brake module comprises a brake switch (6), the input end of the brake switch (6) being connected to the contact output end of the third normally open relay (4), and the output end being grounded.

3. The parking alarm system based on post-detection monitoring distance according to claim 1, characterized in that: The rear monitoring device (1) comprises a first radar (12) and a second radar (13) for monitoring different distances. The signal output end of the rear monitoring device (1) comprises a first radar signal output end (8) and a second radar signal output end (9). The first radar signal output end (8) is connected to a coil input end of a first normally open relay (3), and the second radar signal output end (9) is connected to a coil input end of a third normally open relay (4).

4. The parking alarm system based on post-detection monitoring distance according to claim 2, characterized in that: The parking warning module also includes a dashboard (10) connected in parallel with the warning device (5).

5. The parking alarm system based on post-detection monitoring distance according to claim 4, characterized in that: The input end of the instrument panel (10) is grounded via the contact end of the second normally open relay (7); the coil input end of the second normally open relay (7) is connected to the contact output end of the first normally open relay (3), and the other end is grounded.

6. The parking alarm system based on post-detection monitoring distance according to claim 3, characterized in that: The power source (2) is a motor. The rear monitoring device (1) is provided with a controller (14). The output end of the controller (14) is connected to the input ends of the first radar (12) and the second radar (13).

7. The parking alarm system based on post-detection monitoring distance according to claim 5, characterized in that: A power supply fuse (11) is connected between the output end of the power supply (2) and the input ends of the rear monitoring device (1), the parking warning module and the parking brake module.

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