Bidirectional Doppler radar approach acousto-optic warning device for passenger car maintenance trench

Abstract

The utility model relates to the radar field, and provides a passenger car maintenance trench bidirectional Doppler radar approach acousto-optic warning device comprising a housing and a plurality of Doppler radars; the Doppler radars are distributed on the periphery of the shell. A flash lamp is arranged at the top of the shell, a loudspeaker is arranged in the shell, and the flash lamp and the loudspeaker are controlled by signals collected by the Doppler radar to give an audible and visual alarm. The device is used for overcoming the defects that a trench is exposed and potential safety hazards exist when a passenger car is overhauled, whether moving objects exist nearby or not can be detected through a Doppler radar, sound-light alarming is conducted, and the warning effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of radars, in particular to a two-way Doppler radar approaching sound and light warning device for a passenger car maintenance trench. Background Art

[0002] When a bus is being overhauled, it needs to be parked in a ditch. At this time, the ditch will be exposed. If someone passes by nearby, they may fall into the ditch by mistake, or they may take the initiative to go down into the ditch to take a shortcut. All of the above situations pose safety hazards.

[0003] Therefore, there is an urgent need for a warning device for trenches when being used for coach maintenance. Utility Model Content

[0004] The utility model provides a two-way Doppler radar approaching sound and light warning device for a coach maintenance trench, which is used to solve the defect that the trench is exposed during coach maintenance, thus posing a safety hazard. The Doppler radar can be used to detect whether there are moving objects nearby, and sound and light alarms can be given to play a warning role.

[0005] The utility model provides a two-way Doppler radar approaching sound and light warning device for a passenger car maintenance trench, comprising a shell and a plurality of Doppler radars;

[0006] Doppler radars are distributed around the shell;

[0007] A flashlight is arranged on the top of the shell, and a loudspeaker is arranged inside the shell. The flashlight and the loudspeaker perform sound and light alarms under the control of signals collected by the Doppler radar.

[0008] According to the bus maintenance trench bidirectional Doppler radar approaching sound and light warning device provided by the utility model, the Doppler radars are arranged on the opposite side walls of the shell.

[0009] According to the bus maintenance trench bidirectional Doppler radar approaching sound and light warning device provided by the utility model, a control component is arranged in the housing, and the control component is electrically connected to the Doppler radar, the flash lamp and the speaker;

[0010] The control component receives the signal collected by the Doppler radar and controls the flash light and / or the speaker to sound an alarm.

[0011] The bus maintenance trench bidirectional Doppler radar approaching sound and light warning device provided by the utility model also includes a bracket and a base;

[0012] One end of the bracket is connected to the shell, and the other end is connected to the base;

[0013] The base is placed on the work plane.

[0014] The bus maintenance trench bidirectional Doppler radar approaching sound and light warning device provided by the utility model also includes a power supply component, which includes a battery. The battery is arranged inside the shell or connected to the base.

[0015] According to the bus maintenance trench bidirectional Doppler radar approaching sound and light warning device provided by the utility model, the power supply component includes a solar panel, and the solar panel is arranged on the top of the shell.

[0016] According to the bus maintenance trench bidirectional Doppler radar approaching sound and light warning device provided by the utility model, a sound-speaking port is also opened on the side wall of the shell, and the position of the sound-speaking port corresponds to the position of the speaker in the shell.

[0017] According to the two-way Doppler radar approaching sound and light warning device for a coach maintenance trench provided by the utility model, the detection area of ​​the Doppler radar is fan-shaped.

[0018] According to the two-way Doppler radar approaching sound and light warning device for a coach maintenance trench provided by the utility model, the radius of the detection area of ​​the Doppler radar is 1-16 meters.

[0019] According to the bus maintenance trench bidirectional Doppler radar approaching sound and light warning device provided by the utility model, a switch component is also arranged in the shell, and the switch component is used to adjust the detection area of ​​the Doppler radar and adjust the power of the flash lamp and / or the speaker.

[0020] The solution of the present application provides a two-way Doppler radar approaching sound and light warning device for a bus maintenance trench. The Doppler radar can be set to monitor whether there is a moving object approaching in the area. If it is determined that an object is approaching, the speaker and / or flash light can be controlled to sound an alarm, thereby improving the safety of the trench during bus maintenance. In addition, the warning device can also be applied to other scenarios by adjusting the detection range and triggering method of the Doppler radar. For example, it can also be used at level crossings to monitor whether there are pedestrians or vehicles approaching at the level crossing, and remind the driver to perform the standard operation of "stop, look, and identify". BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 It is a structural schematic diagram of a warning device provided by an embodiment of the utility model;

[0023] Figure 2It is a structural schematic diagram of a control circuit provided in an embodiment of the utility model.

[0024] in:

[0025] 1- Doppler radar; 2- housing; 3- flash light; 4- bracket;

[0026] 5-base; 6-speaker port. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described clearly and completely in conjunction with the drawings in the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] Figure 1 It is a structural schematic diagram of a warning device provided by an embodiment of the utility model.

[0029] Figure 2 It is a structural schematic diagram of a control circuit provided in an embodiment of the utility model.

[0030] like Figure 1 and Figure 2 As shown, this embodiment provides a bus maintenance trench bidirectional Doppler radar 1 approaching sound and light warning device, including a housing 2 and a plurality of Doppler radars 1;

[0031] Doppler radars 1 are distributed around the housing 2;

[0032] A flashlight 3 is arranged on the top of the housing 2, and a speaker is arranged inside the housing 2. The flashlight 3 and the speaker are controlled by the signal collected by the Doppler radar 1 to give an audible and visual alarm.

[0033] In practical applications, Doppler radar can be used to detect whether there are moving objects within a certain range. When working, the working principle of Doppler radar is as follows: when the radar transmits a fixed-frequency pulse wave to scan the air, if it encounters a moving target, there is a frequency difference between the frequency of the echo and the frequency of the transmitted wave, which is called the "Doppler frequency". According to the size of the Doppler frequency, the radial relative motion speed of the target to the radar can be measured; according to the time difference between the transmitted pulse and the received pulse, the distance of the target can be measured. Since the radial speeds of the target and the background object relative to the radar are different, the Doppler frequency of the echo signal is also different.

[0034] In implementation, the working modes of the Doppler radar 1 may include the following:

[0035] No repeated triggering: When a moving object is detected within the radar detection range, the radar outputs a high-level signal for 3 seconds. During this period, the radar does not repeat the detection, and it will delay the detection for 2 seconds. After the moving object is detected again, the radar will output a high level for 2 seconds again. This process is repeated by analogy. When no object is detected, the high-level signal output stops.

[0036] Repeat trigger mode (1): When a moving object is detected within the radar detection range, the radar outputs a high level signal for 2 seconds. During the 2-second duration, the radar detects 30 times per second. If a moving object is detected again during the duration, the time is extended by 2 seconds until there is no moving object within the range. At this time, the high level will continue to output a high level once for 2 seconds and then stop.

[0037] Repeat trigger mode (2): When a moving object is detected within the radar detection range, the radar outputs a high level signal for 10 seconds. During the 10-second duration, the radar detects 30 times per second. If a moving object is detected again during the duration, the time is extended by 10 seconds until there is no moving object within the range. At this time, the high level will continue to output a high level once every 10 seconds and then stop.

[0038] Repeat trigger mode (3): When a moving object is detected within the radar detection range, the radar will output a high level signal for 30 seconds. During the 30-second duration, the radar will detect 30 times per second. If a moving object is detected again during the duration, the time will be extended by 30 seconds until there is no moving object within the range. At this time, the high level will continue to output a high level once every 30 seconds and then stop.

[0039] In actual applications, the radar arrangement and triggering methods can be flexibly changed according to different application scenarios so that the device can be applied to different scenarios.

[0040] In the exemplary embodiment, the Doppler radars 1 are disposed on opposite side walls of the housing 2 .

[0041] like Figure 1 As shown, the Doppler radar 1 can be set in two directions of the shell 2, and further, can be set on two opposite surfaces of the shell 2, so that monitoring in two directions can be achieved. At the same time, since the warning device provided by the present application can be used in the process of bus maintenance, the bus is generally parked in a ditch during maintenance. The warning device can be placed in the ditch when working, so that people coming from two directions of the ditch can be monitored.

[0042] In the exemplary embodiment, a control assembly is disposed in the housing 2, and the control assembly is electrically connected to the Doppler radar 1, the flash lamp 3, and the speaker;

[0043] The control component receives the signal collected by the Doppler radar 1 and controls the flash light 3 and / or the loudspeaker to sound an alarm.

[0044] In actual applications, when the Doppler radar 1 detects someone in a certain direction, it can generate a trigger signal and send the trigger signal to the control component. After receiving the trigger signal, the control component can control the flashlight 3 and / or the speaker to alarm. Specifically, the flashlight 3 and the speaker can alarm at the same time or separately. The working mode is determined according to the actual situation. For example, if the scene is bright and the flashlight 3 is not effective, only the speaker can be used. If the scene is noisy and the speaker is not effective, only the flashlight 3 can be used for alarm. In actual applications, the flashlight 3 and the speaker can also be used for alarm at the same time to improve the warning effect.

[0045] In implementation, the control component may be a circuit board disposed in the housing.

[0046] In the exemplary embodiment, a bracket 4 and a base 5 are also included;

[0047] One end of the bracket 4 is connected to the housing 2, and the other end is connected to the base 5;

[0048] The base 5 is placed on the working plane.

[0049] Exemplarily, the working plane may be the ground, or the bottom of a trench during bus maintenance, or a platform in other working scenarios.

[0050] In the exemplary embodiment, a power supply assembly is also included. The power supply assembly includes a battery. The battery is disposed inside the housing 2 or connected to the base 5 .

[0051] In an exemplary embodiment, the power supply assembly includes a solar panel, which is disposed on the top of the housing 2 .

[0052] In practical applications, the flashlight 3 may only occupy a portion of the space on the top of the housing 2 , and the rest of the space on the top of the housing 2 where the flashlight 3 is not provided may be used to lay solar panels.

[0053] In practice, the solar panel can be electrically connected to the battery and convert solar energy into electrical energy and store it in the battery.

[0054] In the exemplary embodiment, a sound-speaking port 6 is further provided on the side wall of the housing 2 , and the position of the sound-speaking port 6 corresponds to the position of the speaker in the housing 2 .

[0055] In the exemplary embodiment, the detection area of ​​the Doppler radar 1 is sector-shaped.

[0056] In an exemplary embodiment, the detection area of ​​the Doppler radar 1 has a radius of 1-16 meters.

[0057] In practical applications, the detection area of ​​the Doppler radar 1 generally adopts a radius of 3 meters or a radius of 5 meters. Specifically, when applied to a trench for bus maintenance, it can be placed at the bottom of the trench, with a safety distance of 3 meters on one side of the trench and a safety distance of 5 meters on the other side.

[0058] In the exemplary embodiment, a switch assembly is further disposed in the housing 2 , and the switch assembly is used to adjust the detection area of ​​the Doppler radar 1 , and to adjust the power of the flash lamp 3 and / or the speaker.

[0059] In practical applications, the switch assembly can be adjusted manually or automatically. Specifically, the Doppler radar 1 can be set to detect the distance of the moving object from the Doppler radar 1, and when the distance is closer, the power of the speaker and / or flash 3 is greater.

[0060] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, i.e., they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Those of ordinary skill in the art may understand and implement it without creative effort.

[0061] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A two-way Doppler radar approaching sound and light warning device for a passenger car maintenance trench, characterized in that: It includes a shell and several Doppler radars, wherein the working modes of the Doppler radars include non-repetitive triggering, a first repetitive triggering mode, a second repetitive triggering mode, and a third repetitive triggering mode; The Doppler radars are distributed around the shell; A flashlight is arranged on the top of the housing, and a speaker is arranged inside the housing. The flashlight and the speaker perform sound and light alarms under the control of the signal collected by the Doppler radar; The Doppler radar is arranged on the opposite side walls of the housing; A control component is disposed in the housing, and the control component is electrically connected to the Doppler radar, the flash lamp and the speaker; The control component receives the signal collected by the Doppler radar and controls the flash light and / or the speaker to alarm; Also includes a stand and base; One end of the bracket is connected to the shell, and the other end is connected to the base; The base is placed on a working plane; It also includes a power supply assembly, the power supply assembly includes a battery, and the battery is arranged inside the housing or connected to the base; The power supply assembly includes a solar panel, and the solar panel is arranged on the top of the housing; A sound-speaking port is also provided on the side wall of the shell, and the position of the sound-speaking port corresponds to the position of the speaker in the shell; The detection area of ​​the Doppler radar is fan-shaped; The detection area of ​​the Doppler radar has a radius of 1-16 meters; A switch component is also arranged in the housing, and the switch component is used to adjust the detection area of ​​the Doppler radar and adjust the power of the flash lamp and / or the speaker.

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