Multi-mode vehicle-mounted equipment application vehicle-mounted infotainment system and use method

Abstract

The invention provides a multi-mode vehicle-mounted equipment application vehicle machine system, and belongs to the technical field of vehicle-mounted equipment application. Comprising a plurality of first vehicle-mounted external devices which are arranged on the top or the side surface of a vehicle, and each first vehicle-mounted external device is provided with a first controlled power supply relay; the vehicle-mounted gateway, the lodging screen and the LED screen are respectively in wireless communication with the automobile central controller; the 485 relay action unit is in communication connection with the vehicle-mounted gateway, and output contacts of the 485 relay action unit are electrically connected with coils of first controlled power supply relays of the plurality of first vehicle-mounted external devices respectively; the vehicle-mounted storage battery is used for providing electric energy for the plurality of first vehicle-mounted external devices, the vehicle-mounted gateway and the 485 relay action unit; the 485 relay action unit receives an input signal of an automobile central controller through the vehicle-mounted gateway, maintains or changes the state of an output contact, enables the first controlled power supply relay to act, and adjusts the working state of the first vehicle-mounted external equipment.

Description

Technical Field

[0001] The present invention relates to the field of vehicle-mounted equipment application technology, and in particular to a multi-mode vehicle-mounted equipment application vehicle system and a use method thereof. Background Art

[0002] With the continuous improvement of infrastructure such as road networks, the traffic law enforcement departments have an increasing demand for road inspections and warnings. In order to warn of changes in road intersections or weather conditions, patrol vehicles or emergency vehicles of traffic law enforcement departments are generally equipped with strobe lights, laser lights, lifting lights, LED screens or inverted screens. However, these external vehicle-mounted devices often have independent switches. The content editing of some vehicle-mounted devices requires the use of a dedicated APP. The current operator can edit the content after downloading the APP, but after changing the operator, when it is necessary to edit the display content, the APP needs to be downloaded again, making it very inconvenient to adjust the content of the vehicle-mounted device. In addition, the vehicle-mounted device is usually not integrated with the vehicle's onboard computer, resulting in the overall intelligence of the vehicle-mounted device being low and the convenience of operation and adjustment being poor.

[0003] Therefore, it is very necessary to provide a multi-mode vehicle-mounted equipment application vehicle system, realize the unified dispatch and management of various vehicle-mounted external devices by the car central control through reasonable layout and communication of external vehicle-mounted devices, and improve the intelligence level and operation convenience of vehicle-mounted external devices. Summary of the invention

[0004] In view of this, the present invention proposes a vehicle system and a method of using a multi-mode vehicle-mounted equipment application that centrally controls the actions and states of multiple vehicle-mounted devices through a vehicle central control, eliminates manual operation of each vehicle-mounted device, and cannot be integrated and coordinated with the vehicle central control.

[0005] In one aspect, the present invention provides a multi-mode vehicle-mounted equipment application vehicle system, comprising:

[0006] A plurality of first vehicle-mounted external devices are arranged on the top or side surface of the vehicle, and each of the plurality of first vehicle-mounted external devices is equipped with a first controlled power supply relay;

[0007] In-vehicle gateway, used for wireless communication with the car's central control;

[0008] A 485 relay action unit is communicatively connected to the vehicle-mounted gateway, and output contacts of the 485 relay action unit are electrically connected to coils of first controlled power relays of the plurality of first vehicle-mounted external devices respectively;

[0009] The vehicle-mounted storage battery is arranged in the vehicle and is used to provide power to a plurality of first vehicle-mounted external devices, the vehicle-mounted gateway and the 485 relay action unit;

[0010] Among them, the 485 relay action unit receives the input signal of the car central control through the vehicle gateway, maintains or changes the state of the output contact, and activates the first controlled power relay, thereby turning on, changing or closing the working state of several first vehicle-mounted external devices.

[0011] On the basis of the above technical scheme, preferably, the positive pole of the vehicle-mounted battery leads to the positive bus, and the negative pole leads to the negative bus; a first power-on relay J1 is arranged on the trunk line of the positive bus, and the normally open contact of the first power-on relay J1 is arranged on the positive bus, and the coil of the first power-on relay J1 relay is electrically connected to the vehicle-mounted igniter through a knob switch; the power input end of the vehicle-mounted gateway and the 485 relay action unit are electrically connected to the normally open contact of the first power-on relay J1 and the negative bus respectively; the 485 relay action unit includes a plurality of first action output coils, a second action output coil, and an output contact pair arranged in a one-to-one correspondence with the first action output coil and the second action output coil; a plurality of independent first branches are arranged across the positive bus and the negative bus, and a first controlled power relay and a first controlled power relay are arranged on the plurality of first branches respectively. A first vehicle-mounted external device, a first contact of a first controlled power relay on a first branch is electrically connected to a positive bus, a second contact of the first controlled power relay on the first branch is electrically connected to a positive pole of the first vehicle-mounted external device, a negative pole of the first vehicle-mounted external device is electrically connected to a negative bus, a group of output contact pairs corresponding to a first action output coil are electrically connected to a positive bus and one end of a coil of the first controlled power relay, respectively, and the other end of the coil of the first controlled power relay is grounded; when the automobile central control sends a control signal through the vehicle-mounted gateway, the vehicle-mounted gateway inputs the control signal into the first action output coil, and the first action input coil drives the corresponding output contact pair to change its state, so that the coil of the first controlled power relay on the first branch is powered on, and further the contacts of the first controlled power relay are activated, so that the first vehicle-mounted external device is powered on.

[0012] Preferably, the plurality of first vehicle-mounted external devices are further provided with a state control terminal, and a second action output coil is provided between the state control terminal and the positive bus or the negative bus;

[0013] When the second action output coil is located between the state control terminal and the negative bus, the contact pair corresponding to the second action output coil is electrically connected to the control terminal of the first vehicle-mounted external device and the negative bus respectively;

[0014] When the second action output coil is located between the state control end and the positive bus, a second controlled power supply relay is also configured, and the contact pair corresponding to the second action output coil is electrically connected to the positive bus and one end of the coil of the second controlled power supply relay respectively, and the other end of the coil of the second controlled power supply relay is grounded; the first contact of the second controlled power supply relay is electrically connected to the positive bus, and the second contact of the second controlled power supply relay is electrically connected to the state control end of the first vehicle-mounted external device.

[0015] Further preferably, the plurality of first vehicle-mounted external devices are front working lights, strobe lights, inverted screens, LED screens or laser lights.

[0016] Further preferably, several second branches are arranged between the positive bus and the negative bus, and each of the second branches is provided with a third controlled power relay and a second vehicle-mounted external device, one end of the coil of the third controlled power relay is electrically connected to the positive bus, the other end of the coil of the third controlled power relay is grounded, the first contact of the third controlled power relay is electrically connected to the positive bus, the second contact of the third controlled power relay is electrically connected to the positive pole of the second vehicle-mounted external device, and the negative pole of the second vehicle-mounted external device is electrically connected to the negative bus.

[0017] Still further preferably, it also includes a remote control operation unit and a bus switching switch, the normally open contact of the first power-on relay J1 is also electrically connected to the bus switching switch, and the bus switching switch electrically connects the positive pole of the vehicle-mounted battery to the remote control operation unit; a number of normally open remote control switches are independently arranged on the remote control operation unit, and the number of normally open remote control switches are electrically connected to the non-grounded end of the coil of the first controlled power supply relay, the non-grounded end of the second controlled power supply relay or the status control end of the first vehicle-mounted external device.

[0018] More preferably, the first contact and the second contact of the first controlled power relay are normally open contacts or normally closed contacts, and the first contact and the second contact of the second controlled power relay are normally open contacts.

[0019] More preferably, the plurality of second vehicle-mounted external devices are cabin light assemblies, cameras, warning lights, sirens or lifting lighting lamps.

[0020] On the other hand, the present invention also provides a method for using a multi-mode vehicle-mounted equipment application vehicle system, including the following contents:

[0021] Configure the above-mentioned multi-mode vehicle-mounted equipment application vehicle system; arrange a plurality of first vehicle-mounted external devices and second vehicle-mounted external devices on the vehicle;

[0022] The car central control is wirelessly connected to the vehicle gateway, the LED screen and the inverted screen respectively; the 485 relay action unit is wirelessly connected to the vehicle gateway; the car central control is also wirelessly connected to the LED screen, and the car central control edits the content displayed on the LED screen; the 485 relay action unit includes a plurality of first action output coils, a second action output coil, a plurality of IO ports and a plurality of sensor input terminals, and the first action output coil and the second action output coil are respectively configured with contact pairs;

[0023] The positive busbar is led out from the positive pole of the vehicle battery, and the negative pole is led out from the negative pole; the positive poles of the vehicle gateway and the 485 relay action unit are electrically connected to the normally open contact of the first power-on relay J1, and the negative poles of the vehicle gateway and the 485 relay action unit are electrically connected to the negative busbar. After the first power-on relay J1 is turned on by the vehicle, the vehicle gateway and the 485 relay action unit are powered on; five first branches and five second branches are configured between the positive busbar and the negative busbar;

[0024] Among them, each first branch is respectively configured with a first action output coil, a first controlled power relay and a first vehicle-mounted external device; the output contact pair corresponding to the first action output coil is respectively electrically connected to the positive bus and one end of the coil of the first controlled power relay, the other end of the coil of the first controlled power relay is grounded, the first contact of the first controlled power relay is electrically connected to the positive bus, the second contact of the first controlled power relay on the first branch is electrically connected to the positive pole of the first vehicle-mounted external device, and the negative pole of the first vehicle-mounted external device is electrically connected to the negative bus;

[0025] The first vehicle-mounted external device is also provided with a state control terminal, and a second action output coil is provided between the state control terminal and the positive bus or the negative bus: when the second action output coil is located between the state control terminal and the negative bus, the contact pair corresponding to the second action output coil is electrically connected to the control terminal and the negative bus of the first vehicle-mounted external device respectively; when the second action output coil is located between the state control terminal and the positive bus, a second controlled power supply relay is additionally configured, and the contact pair corresponding to the second action output coil is electrically connected to the positive bus and one end of the coil of the second controlled power supply relay respectively, and the other end of the coil of the second controlled power supply relay is grounded; the first contact of the second controlled power supply relay is electrically connected to the positive bus, and the second contact of the second controlled power supply relay is electrically connected to the state control terminal of the first vehicle-mounted external device;

[0026] Among them, the car central control sends an action signal to the second action output coil via the vehicle gateway and the 485 relay action unit, so that the state control end obtains the control signal, thereby changing the working state of the first vehicle-mounted external device in the power-on state; each second branch is respectively configured with a third controlled power supply relay and a second vehicle-mounted external device, and the car central control sends an action signal to the third controlled power supply relay via the vehicle gateway to enable or disable the second vehicle-mounted external device;

[0027] A remote control unit and a bus switch are configured on the vehicle; when the switch is in a normally closed state, the first action output coil, the second action output coil and the coil of the third controlled power relay are powered on respectively, and the automobile central control adjusts the working state of the first vehicle-mounted external device and the second vehicle-mounted external device through the vehicle gateway and the 485 relay action unit by wireless communication; when the moving contact of the switch is actuated, the switch is electrically connected to the remote control unit, and the remote control unit includes a plurality of normally open remote control switches, which are electrically connected to the non-grounded end of the coil of the first controlled power relay, the non-grounded end of the second controlled power relay or the state control end of the first vehicle-mounted external device, so as to power on the coil of the first controlled power relay, power on the coil of the second controlled power relay or drive the state control end of the first vehicle-mounted external device, so as to realize manual input when the vehicle gateway or the 485 relay action unit is abnormal, and at this time, the normally open remote control switch adjusts the working state of the first vehicle-mounted external device and the second vehicle-mounted external device.

[0028] Preferably, the automobile central control adjusts the working state of the first vehicle-mounted external device and the second vehicle-mounted external device by wireless communication, that is, after the vehicle-mounted ignition is started, the first power-on relay J1 is closed, and the switch is in a normally closed state, and the automobile central control drives the first vehicle-mounted external device and the second vehicle-mounted external device through the gateway or directly:

[0029] 1) After the vehicle is started, the IO port configured by the 485 relay action unit outputs a high level, enabling the third controlled power relay and the second vehicle-mounted external device on the second branch, so that the cabin light assembly, camera, warning light, siren and lifting lighting configured on the vehicle all enter and maintain a working state, indicating the current position and outline of the vehicle, and illuminating the designated area near the vehicle through the lifting lighting; the horizontal lowering limit position and the raising limit position of the lifting lighting are respectively provided with a first position sensor, and the output end of the first position sensor is respectively electrically connected to the first sensor input end and the second sensor input end of the 485 relay action unit, and outputs a first position sensor signal for indicating the current lifting lighting, and the first position sensor signal is fed back to the vehicle central control through the 485 relay action unit and the vehicle gateway;

[0030] 2) Then, the automobile central control sends a power-on command through the vehicle gateway, and the first action output coil of the 485 relay action unit is actuated, so that the coil of the first controlled power relay of the corresponding first branch is powered on, and the contact of the first controlled power relay is closed, so that the front working lights, strobe lights, inverted screen, LED screen and laser lights are all powered on, and each first vehicle-mounted external device enters the initial working state; the automobile central control edits the content displayed on the LED screen or inverted screen, and sends it wirelessly to the LED screen or inverted screen;

[0031] 3) The laser light and the inverted screen are respectively provided with state control terminals; the state control terminal of the laser light is electrically connected to the negative busbar through the contact pair of the second action output coil, and the automobile central control sends a laser light action command through the vehicle gateway, so that the first action output coil of the 485 relay action unit is intermittently actuated, so that the laser light enters a flashing state, and the frequency of the laser light flashing state switches between the set frequency discrete values; the state control terminal of the inverted screen realizes sequential control through the contacts of the second action output coil and the coil of the second controlled power supply relay, and the automobile central control sends an action command through the vehicle gateway, so that the inverted screen in the power-on state rotates and rises, and displays the content to the target behind the vehicle; the inverted screen is respectively provided with a second position sensor at the extreme positions of inverted and raised, and the second position sensor is respectively electrically connected to the third sensor input terminal and the fourth sensor input terminal of the 485 relay action unit, and outputs a second position sensor signal for indicating the current position of the inverted screen, and the second position sensor signal is fed back to the automobile central control through the 485 relay action unit and the vehicle gateway; the laser light and the inverted screen respectively provide warning signals for neighboring vehicles;

[0032] 4) When the first vehicle-mounted external device and the second vehicle-mounted external device need to be turned off, the vehicle central control first sets the state control terminal through the 485 relay action unit to make the laser light exit from the flashing state and the inverted screen return to the initial position of horizontal inversion. Then the 485 relay action unit sets the first action output coil, and the front working light, strobe light, inverted screen, LED screen and laser light all stop working. The 485 relay action unit feeds back the current position of the inverted screen to the vehicle central control through the vehicle gateway. Then the 485 relay action unit sets the third controlled power relay to reset the second vehicle-mounted external device and stop working. The 485 relay action unit feeds back the current position of the lifting lighting to the vehicle central control through the vehicle gateway. When the positions of the inverted screen and the lifting lighting are correct, after the vehicle is turned off, the first energized relay J1 is de-energized, and the system completes the reset.

[0033] The multi-mode vehicle-mounted equipment application vehicle system and use method provided by the present invention have the following beneficial effects compared with the prior art:

[0034] (1) This solution integrates multiple vehicle-mounted devices with the vehicle central control. Through the operation input of the vehicle central control, the status control and content editing of the vehicle-mounted external devices can be realized, eliminating the inconvenience of requiring a dedicated person to download and configure a dedicated APP, and improving the convenience of using the vehicle-mounted external devices; the wireless gateway and 485 relay action unit are used to realize the wireless control of multiple first action output coils and second action output coils, and simplify the complexity of the system wiring harness wiring;

[0035] (2) Provides a logic for the coordinated use of on-board devices, presetting the linkage logic between multiple on-board external devices to avoid the inconvenience of turning on / off devices one by one;

[0036] (3) The additional remote control unit and busbar switching switch can realize manual remote control operation when the vehicle gateway or 485 relay action unit is abnormal, which improves the usability and reliability of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] 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 will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0038] Figure 1 A system structure topology diagram of a multi-mode vehicle-mounted equipment application vehicle system and a method of using the present invention;

[0039] Figure 2 A combined state wiring diagram of a first branch, a second branch, a remote control unit and a bus switch of a multi-mode vehicle-mounted equipment application vehicle system and a method of use of the present invention;

[0040] Figure 3 A wiring diagram of a first branch of a multi-mode vehicle-mounted equipment application vehicle system and a method of use of the present invention;

[0041] Figure 4 A wiring diagram of a second branch of a multi-mode vehicle-mounted equipment application vehicle system and a method of use of the present invention;

[0042] Figure 5 A structural schematic diagram of a 485 relay action unit of a multi-mode vehicle-mounted equipment application vehicle system and a method of using the present invention;

[0043] Figure 6 A three-dimensional diagram of the arrangement positions of a first vehicle-mounted external device and a second vehicle-mounted external device in a vehicle according to a multi-mode vehicle-mounted equipment application vehicle system and a method of using the present invention;

[0044] Figure 7 This is a rear view of the arrangement positions of a first vehicle-mounted external device and a second vehicle-mounted external device in a vehicle according to a multi-mode vehicle-mounted equipment application vehicle system and a method of using the present invention. DETAILED DESCRIPTION

[0045] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0046] External vehicle-mounted devices often have independent switches. Some vehicle-mounted devices require a dedicated APP to edit their content. The current operator can edit the content after downloading the APP, but after changing the operator, when the displayed content needs to be edited, the APP needs to be downloaded again, making it very inconvenient to adjust the content of the vehicle-mounted device. In addition, the vehicle-mounted device is usually not integrated with the vehicle's onboard computer, resulting in a low overall level of intelligence in the vehicle-mounted device. In view of this, Figure 1 As shown, on the one hand, the present invention provides a multi-mode vehicle-mounted equipment application vehicle system, including:

[0047] A plurality of first vehicle-mounted external devices 100 are arranged on the top or side surface of the vehicle, and each of the plurality of first vehicle-mounted external devices 100 is equipped with a first controlled power relay; the first controlled power relay is used to reliably supply power to the first vehicle-mounted external devices 100.

[0048] The vehicle gateway 200 is used for wireless communication with the vehicle central control; the vehicle gateway interacts with the vehicle central control via wireless communication, which can simplify the wiring harness layout.

[0049] The 485 relay action unit 300 is communicatively connected to the vehicle gateway 200, and the output contacts of the 485 relay action unit 300 are respectively electrically connected to the coils of the first controlled power relays of the plurality of first vehicle external devices 100; the state of each first controlled power relay can be controlled by the 485 relay action unit 300, that is, the small level signal at the automobile central control controls the large level signal at the first controlled power relay.

[0050] The vehicle-mounted battery 400 is disposed in the vehicle and is used to provide power to a plurality of first vehicle-mounted external devices 100 , the vehicle-mounted gateway 200 and the 485 relay action unit 300 ;

[0051] Among them, the 485 relay action unit 300 receives the input signal of the car central control through the vehicle gateway 200, maintains or changes the state of the output contact, and activates the first controlled power relay, thereby turning on, changing or closing the working state of several first vehicle-mounted external devices 100.

[0052] The positive pole of the vehicle-mounted battery 400 leads to the positive bus, and the negative pole leads to the negative bus; a first power-on relay J1 is arranged on the trunk line of the positive bus, and the normally open contact of the first power-on relay J1 is arranged on the positive bus, and the coil of the first power-on relay J1 is electrically connected to the vehicle-mounted igniter through a knob switch; the power input ends of the vehicle-mounted gateway 200 and the 485 relay action unit 300 are electrically connected to the normally open contact of the first power-on relay J1 and the negative bus respectively; when the normally open contact of the first power-on relay J1 is closed, the vehicle-mounted gateway 200 and the 485 relay action unit 300 are powered on.

[0053] like Figure 1 The 485 relay action unit 300 shown in the figure includes a plurality of first action output coils, a second action output coil, and a pair of output contacts arranged in one-to-one correspondence with the first action output coils and the second action output coils; a plurality of independent first branches are arranged between the positive bus and the negative bus, and a first controlled power supply relay and a first vehicle-mounted external device 100 are respectively arranged on the plurality of first branches, the first contact of the first controlled power supply relay on the first branch is electrically connected to the positive bus, the second contact of the first controlled power supply relay on the first branch is electrically connected to the positive pole of the first vehicle-mounted external device 100, and the first vehicle-mounted external device The negative pole of the device 100 is electrically connected to the negative bus, a group of output contact pairs corresponding to the first action output coil are electrically connected to the positive bus and one end of the coil of the first controlled power relay respectively, and the other end of the coil of the first controlled power relay is grounded; when the automobile central control sends a control signal through the vehicle gateway 200, the vehicle gateway 200 inputs the control signal into the first action output coil, and the first action input coil drives the corresponding output contact pair to change its state, so that the coil of the first controlled power relay on the first branch is powered on, and further the contacts of the first controlled power relay are activated, so that the first vehicle-mounted external device 100 is powered on.

[0054] Figure 1 The vehicle communication shown has three levels. The first level is the car central control; the second level is the vehicle gateway, inverted screen and LED screen, which are wirelessly connected to the car central control; the third level is the 485 relay action unit 300, which is wiredly connected to the vehicle gateway through a 485 communication cable.

[0055] The first vehicle-mounted external devices 100 are front working lights, strobe lights, inverted screens, LED screens or laser lights.

[0056] like Figure 2 Combination Figure 3 To illustrate the above content, there are five first branches between the positive busbar and the negative busbar, including:

[0057] On the first first branch, the contact of the first action output coil KG1 is electrically connected to the coil of the first controlled power relay J6, the contact of the first controlled power relay is electrically connected to the positive bus and the positive pole of the strobe light respectively, and the negative pole of the strobe light is electrically connected to the negative bus;

[0058] On the second first branch, the contact of another first action output coil KG2 is electrically connected to the coil of the first controlled power relay J7, the contact of the first controlled power relay J7 is electrically connected to the positive bus and the positive pole of the laser lamp respectively, and the negative pole of the laser lamp is electrically connected to the negative bus;

[0059] On the third first branch, the contact of another first action output coil KG4 is electrically connected to the coil of the first controlled power relay J8, the contact of the first controlled power relay J8 is electrically connected to the positive bus and the positive pole of the LED screen respectively, and the negative pole of the LED screen is electrically connected to the negative bus;

[0060] On the fourth first branch, the contact of another first action output coil KG6 is electrically connected to the coil of the first controlled power relay J10, the contact of the first controlled power relay J10 is electrically connected to the positive bus and the positive pole of the inverted screen respectively, and the negative pole of the inverted screen is electrically connected to the negative bus;

[0061] On the fifth first branch, the contacts of another first action output coil KG8 are electrically connected to the coil of the first controlled power relay J3, the contacts of the first controlled power relay J3 are electrically connected to the positive bus and the positive pole of the front working light respectively, and the negative pole of the front working light is electrically connected to the negative bus.

[0062] like Figure 2 Combination Figure 3 As shown, a state control terminal 101 is additionally provided on the first vehicle-mounted external devices 100, and a second action output coil is provided between the state control terminal 101 and the positive bus or the negative bus;

[0063] When the second action output coil is located between the state control terminal 101 and the negative bus, the contact pair corresponding to the second action output coil is electrically connected to the control terminal and the negative bus of the first vehicle-mounted external device 100. The control terminal 101 and the negative bus of the laser light are electrically connected to the contact pair corresponding to a second action output coil KG3, respectively. The vehicle central control sends an action switching instruction to the second action output coil KG3 through the vehicle gateway and the 485 relay action unit 300, which can change the output mode of the laser light, such as the flashing frequency.

[0064] When the second action output coil is located between the state control terminal 101 and the positive bus, a second controlled power relay is also configured, and the contact pair corresponding to the second action output coil is electrically connected to the positive bus and one end of the coil of the second controlled power relay respectively, and the other end of the coil of the second controlled power relay is grounded; the first contact of the second controlled power relay is electrically connected to the positive bus, and the second contact of the second controlled power relay is electrically connected to the state control terminal 101 of the first vehicle-mounted external device 100. Figure 2 Combination Figure 3 As shown, the output contact pair corresponding to the second action output coil KG7 is electrically connected to the positive bus and the coil of the second controlled power relay J11 respectively, and the contacts of the second controlled power relay J11 are electrically connected to the common end, the lifting end or the falling end of the falling screen respectively, and the current posture of the falling screen is changed or maintained through the input of the second action output coil KG7.

[0065] like Figure 4 As shown, the vehicle is also provided with a number of second on-vehicle external devices, including cameras, warning lights, sirens, lifting lights and compartment light assemblies. In order to centrally control each second on-vehicle external device, four second branches are provided between the positive bus and the negative bus, and a third controlled power supply relay and a second on-vehicle external device are provided in each of the second branches. One end of the coil of the third controlled power supply relay is electrically connected to the positive bus, and the other end of the coil of the third controlled power supply relay is grounded. The first contact of the third controlled power supply relay is electrically connected to the positive bus, and the second contact of the third controlled power supply relay is electrically connected to the positive pole of the second on-vehicle external device, and the negative pole of the second on-vehicle external device is electrically connected to the negative bus.

[0066] In the first second branch, the first contact and the second contact of the third controlled power relay J4 are electrically connected to the positive bus and the positive electrode of the camera respectively, and the negative electrode of the camera is electrically connected to the negative bus;

[0067] In the second second branch, the first contact and the second contact of another third controlled power relay J5 are electrically connected to the positive bus and the positive pole of the warning light / siren respectively, and the negative pole of the warning light / siren is electrically connected to the negative bus;

[0068] In the third second branch, the first contact and the second contact of another third controlled power relay J9 are electrically connected to the positive bus and the positive pole of the lifting lighting lamp respectively, and the negative pole of the lifting lighting lamp is electrically connected to the negative bus;

[0069] In the fourth second branch, the first contact and the second contact of another third controlled power relay J2 are electrically connected to the positive bus and the positive pole of the cabin lamp assembly respectively, and the negative pole of the cabin lamp assembly is electrically connected to the negative bus. The cabin lamp assembly specifically includes a cabin lamp, a left cabin lamp strip, and a right cabin lamp strip.

[0070] Each second vehicle-mounted external device is also directly controlled by the 485 relay action unit 300. For example, the level output by the IO port of the 485 relay action unit 300 is to power on the coil of the third controlled power relay J2, so that each second vehicle-mounted external device enters a power-on or power-off state. In the present invention, the second vehicle-mounted external device is a cabin lamp assembly, a camera, a warning light, a siren, or a lifting lighting lamp; the lifting lighting lamp is also connected to the vehicle-mounted gateway 200 in communication.

[0071] like Figure 2 and Figure 3 As shown, in order to avoid the situation where an abnormality occurs in the vehicle gateway 200 or the 485 relay action unit 300 and wireless input cannot be performed through the vehicle central control, this solution also provides a backup method for manually adjusting the vehicle-mounted external device. Specifically, the system is also configured with a remote control unit 500 and a bus switch 600, and the normally open contact of the first power-on relay J1 is also electrically connected to the bus switch 600, and the bus switch 600 electrically connects the positive pole of the vehicle-mounted battery 400 to the remote control unit 500; the remote control unit 500 is independently provided with a plurality of normally open remote switches K, and the plurality of normally open remote switches K are electrically connected to the non-grounded end of the coil of the first controlled power relay, the non-grounded end of the coil of the second controlled power relay, or the state control end 101 of the first vehicle-mounted external device 100.

[0072] The following are some examples:

[0073] The contacts of the first normally open remote control switch K1 are electrically connected to the positive bus and the non-grounded end of the coil of the first controlled power relay J6 respectively;

[0074] The contacts of the second normally open remote control switch K2 are electrically connected to the positive bus and the non-grounded end of the coil of the first controlled power relay J7 respectively;

[0075] The contacts of the tenth normally open remote control switch K10 are electrically connected to the positive bus and the controlled end 101 of the laser lamp respectively;

[0076] The contacts of the third normally open remote control switch K3 are electrically connected to the positive bus and the non-grounded end of the coil of the first controlled power relay J8 respectively;

[0077] The contacts of the fifth normally open remote control switch K5 are respectively connected to the positive bus and the non-grounded end of the coil of the second controlled power relay J11;

[0078] The contacts of the fourth normally open remote control switch K4 are electrically connected to the positive bus and the non-grounded end of the coil of the first controlled power relay J10 respectively;

[0079] The contacts of the sixth normally open remote control switch K6 are electrically connected to the positive bus and the non-grounded end of the coil of the first controlled power relay J3 respectively.

[0080] As a preferred implementation, the first contact and the second contact of the first controlled power relay in the present invention are normally open contacts or normally closed contacts, and the first contact and the second contact of the second controlled power relay are normally open contacts.

[0081] On the other hand, the present invention also provides a method for using a multi-mode vehicle-mounted equipment application vehicle system, including the following contents:

[0082] Configure the above multi-mode vehicle equipment application vehicle system; Figure 6 and Figure 7 As shown, a plurality of first vehicle-mounted external devices 100 and second vehicle-mounted external devices are arranged on the vehicle;

[0083] The car central control is wirelessly connected to the vehicle gateway 200, the LED screen and the inverted screen respectively; the 485 relay action unit 300 is communicatively connected to the vehicle gateway 200; the car central control is also wirelessly connected to the LED screen, and the car central control edits the content displayed on the LED screen; the 485 relay action unit 300 includes a plurality of first action output coils, a second action output coil, a plurality of IO ports and a plurality of sensor input terminals, and the first action output coil and the second action output coil are respectively configured with contact pairs.

[0084] The positive busbar is led out from the positive electrode of the vehicle battery 400, and the negative busbar is led out from the negative electrode; the positive electrodes of the vehicle gateway 200 and the 485 relay action unit 300 are electrically connected to the normally open contacts of the first power-on relay J1, and the negative electrodes of the vehicle gateway 200 and the 485 relay action unit 300 are electrically connected to the negative busbar. After the vehicle ignition is closed, the vehicle gateway 200 and the 485 relay action unit 300 are powered on; five first branches and five second branches are configured between the positive busbar and the negative busbar;

[0085] Among them, each first branch is respectively configured with a first action output coil, a first controlled power relay and a first vehicle-mounted external device 100; the output contact pair corresponding to the first action output coil is respectively electrically connected to the positive bus and one end of the coil of the first controlled power relay, the other end of the coil of the first controlled power relay is grounded, the first contact of the first controlled power relay is electrically connected to the positive bus, the second contact of the first controlled power relay on the first branch is electrically connected to the positive pole of the first vehicle-mounted external device 100, and the negative pole of the first vehicle-mounted external device 100 is electrically connected to the negative bus.

[0086] The first vehicle-mounted external device 100 is also provided with a state control terminal 101, and a second action output coil is provided between the state control terminal 101 and the positive bus or the negative bus: when the second action output coil is located between the state control terminal 101 and the negative bus, the contact pair corresponding to the second action output coil is electrically connected to the control terminal and the negative bus of the first vehicle-mounted external device 100 respectively; when the second action output coil is located between the state control terminal 101 and the positive bus, a second controlled power supply relay is additionally configured, and the contact pair corresponding to the second action output coil is electrically connected to the positive bus and one end of the coil of the second controlled power supply relay respectively, and the other end of the coil of the second controlled power supply relay is grounded; the first contact of the second controlled power supply relay is electrically connected to the positive bus, and the second contact of the second controlled power supply relay is electrically connected to the state control terminal 101 of the first vehicle-mounted external device 100;

[0087] Among them, the car central control sends an action signal to the second action output coil via the vehicle gateway 200 and the 485 relay action unit 300, so that the state control terminal 101 obtains the control signal, thereby changing the working state of the first vehicle-mounted external device 100 in the powered-on state; each second branch is respectively configured with a third controlled power supply relay and a second vehicle-mounted external device, and the car central control sends an action signal to the third controlled power supply relay via the vehicle gateway 200 to enable or disable the second vehicle-mounted external device;

[0088] A remote control unit and a bus switch are configured on the vehicle; when the switch is in a normally closed state, the first action output coil, the second action output coil and the coil of the third controlled power relay are powered on respectively, and the automobile central control adjusts the working state of the first vehicle-mounted external device 100 and the second vehicle-mounted external device through the vehicle gateway and the 485 relay action unit by wireless communication; when the moving contact of the switch is actuated, the switch is electrically connected to the remote control unit, and the remote control unit includes a plurality of normally open remote control switches, which are electrically connected to the non-grounded end of the coil of the first controlled power relay, the non-grounded end of the second controlled power relay or the state control end of the first vehicle-mounted external device 100, so as to power on the coil of the first controlled power relay, power on the coil of the second controlled power relay or drive the state control end of the first vehicle-mounted external device 100, so as to realize manual input when the vehicle gateway 200 or the 485 relay action unit 300 is abnormal, and at this time, the normally open remote control switch adjusts the working state of the first vehicle-mounted external device 100 and the second vehicle-mounted external device.

[0089] The automobile central control adjusts the working state of the first vehicle-mounted external device 100 and the second vehicle-mounted external device through wireless communication. After the vehicle-mounted ignition is started, the first power-on relay J1 is closed, and the switch is in a normally closed state. The automobile central control drives the first vehicle-mounted external device 100 and the second vehicle-mounted external device through the gateway or directly:

[0090] 1) After the vehicle is started, the IO port configured by the 485 relay action unit 300 outputs a high level, enabling the third controlled power relay and the second vehicle-mounted external device on the second branch, so that the cabin light assembly, camera, warning light, siren and lifting lighting configured on the vehicle all enter and maintain a working state, indicating the current position and outline of the vehicle, and illuminating the designated area near the vehicle through the lifting lighting; the horizontal lowering limit position and the raising limit position of the lifting lighting are respectively provided with a first position sensor, and the output end of the first position sensor is respectively electrically connected to the first sensor input end and the second sensor input end of the 485 relay action unit 300, and outputs a first position sensor signal for indicating the current lifting lighting, and the first position sensor signal is fed back to the vehicle central control through the 485 relay action unit 300 and the vehicle gateway 200;

[0091] 2) Then, the automobile central control sends a power-on command through the vehicle gateway 200, and the first action output coil of the 485 relay action unit 300 is actuated, so that the coil of the first controlled power relay of the corresponding first branch is powered on, and the contacts of the first controlled power relay are closed, so that the front working lights, strobe lights, inverted screens, LED screens and laser lights are all powered on, and each first vehicle-mounted external device 100 enters an initial working state; the automobile central control also directly communicates with the LED screen or inverted screen through the vehicle-mounted wireless WIFI network, edits the content displayed on the LED screen or inverted screen, and wirelessly sends it to the LED screen or inverted screen;

[0092] 3) The laser light and the inverted screen are respectively provided with a state control terminal 101; the state control terminal 101 of the laser light is electrically connected to the negative busbar through the contact pair of the second action output coil, and the automobile central control sends a laser light action instruction through the vehicle gateway 200, so that the first action output coil of the 485 relay action unit 300 is intermittently actuated, so that the laser light enters a flashing state, and the frequency of the laser light flashing state switches between the set frequency discrete values; the state control terminal 101 of the inverted screen realizes sequential control through the contacts of the second action output coil and the coil of the second controlled power supply relay, and the automobile central control passes The vehicle gateway 200 issues an action command to rotate and raise the powered-on inverted screen, and displays the content to the target behind the vehicle; the inverted screen is provided with a second position sensor at the inverted and raised extreme positions, and the second position sensor is electrically connected to the third sensor input terminal and the fourth sensor input terminal of the 485 relay action unit 300, respectively, and outputs a second position sensor signal indicating the current position of the inverted screen, and the second position sensor signal is fed back to the central control of the car through the 485 relay action unit 300 and the vehicle gateway 200; the laser light and the inverted screen provide warning signals for neighboring vehicles respectively;

[0093] 4) When the first vehicle-mounted external device 100 and the second vehicle-mounted external device need to be turned off, the automobile central control first sets the state control terminal 101 through the 485 relay action unit 300 to make the laser light exit from the flashing state and the inverted screen return to the initial position of horizontal inverted state, then the 485 relay action unit 300 sets the first action output coil, the front working light, the strobe light, the inverted screen, the LED screen and the laser light all stop working, and the 485 relay action unit 300 feeds back the current position of the inverted screen to the automobile central control through the vehicle gateway 200; then the 485 relay action unit 300 sets the third controlled power supply relay to reset the second vehicle-mounted external device and stop working, and the 485 relay action unit 300 feeds back the current position of the lifting lighting lamp to the automobile central control through the vehicle gateway 200; when the positions of the inverted screen and the lifting lighting lamp are correct, after the vehicle is turned off, the first power-on relay J1 is powered off, and the system completes the reset. If the first action output coil or the second action output coil cannot be set through the 485 relay action unit 300, it is necessary to operate the bus switch 600, change to the remote control operation unit 500 operation mode, and turn off the corresponding vehicle-mounted external device.

[0094] 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 protection scope of the present invention.

Claims

1. A multi-mode vehicle-mounted equipment application vehicle system, characterized in that: include: A plurality of first vehicle-mounted external devices (100) are arranged on the top or side surface of the vehicle, and each of the plurality of first vehicle-mounted external devices (100) is equipped with a first controlled power supply relay; An in-vehicle gateway (200), used for wireless communication with a central control of an automobile; A 485 relay action unit (300) is communicatively connected to the vehicle-mounted gateway (200), and the output contacts of the 485 relay action unit (300) are respectively electrically connected to the coils of the first controlled power supply relays of the plurality of first vehicle-mounted external devices (100); An on-vehicle storage battery (400), arranged in the vehicle, for providing electric energy to a plurality of first on-vehicle external devices (100), an on-vehicle gateway (200) and a 485 relay action unit (300); The 485 relay action unit (300) receives an input signal from the automobile central control via the vehicle gateway (200), maintains or changes the state of the output contact, and activates the first controlled power relay, thereby turning on, changing or turning off the working state of a plurality of first vehicle-mounted external devices (100).

2. A multi-mode vehicle-mounted equipment application vehicle system according to claim 1, characterized in that: The positive electrode of the vehicle-mounted storage battery (400) leads to the positive busbar, and the negative electrode leads to the negative busbar; a first power-on relay J1 is arranged on the trunk line of the positive busbar, the normally open contact of the first power-on relay J1 is arranged on the positive busbar, and the coil of the first power-on relay J1 is electrically connected to the vehicle-mounted igniter through a knob switch; the power input ends of the vehicle-mounted gateway (200) and the 485 relay action unit (300) are electrically connected to the normally open contact of the first power-on relay J1 and the negative busbar respectively; the 485 relay action unit (300) includes a plurality of first action output coils, a second action output coil, and an output contact pair arranged in a one-to-one correspondence with the first action output coil and the second action output coil; a plurality of independent first branches are arranged between the positive busbar and the negative busbar, and a first controlled power relay and a first vehicle-mounted external device (100) are respectively arranged on the plurality of first branches. , a first contact of a first controlled power relay on a first branch is electrically connected to a positive busbar, a second contact of the first controlled power relay on the first branch is electrically connected to a positive pole of a first vehicle-mounted external device (100), a negative pole of the first vehicle-mounted external device (100) is electrically connected to a negative busbar, a group of output contact pairs corresponding to a first action output coil are electrically connected to the positive busbar and one end of a coil of the first controlled power relay, respectively, and the other end of the coil of the first controlled power relay is grounded; when the automobile central control sends a control signal through the vehicle-mounted gateway (200), the vehicle-mounted gateway (200) inputs the control signal into the first action output coil, and the first action input coil drives the corresponding output contact pair to change state, so that the coil of the first controlled power relay on the first branch is powered on, and further the contacts of the first controlled power relay are activated, so that the first vehicle-mounted external device (100) is powered on.

3. The multi-mode vehicle-mounted equipment application vehicle system according to claim 2, characterized in that: The plurality of first vehicle-mounted external devices (100) are also provided with a state control terminal (101), and a second action output coil is provided between the state control terminal (101) and the positive bus bar or the negative bus bar; When the second action output coil is located between the state control terminal (101) and the negative bus, the contact pair corresponding to the second action output coil is electrically connected to the control terminal and the negative bus of the first vehicle-mounted external device (100) respectively; When the second action output coil is located between the state control terminal (101) and the positive bus, a second controlled power relay is also configured, and the contact pair corresponding to the second action output coil is electrically connected to the positive bus and one end of the coil of the second controlled power relay respectively, and the other end of the coil of the second controlled power relay is grounded; the first contact of the second controlled power relay is electrically connected to the positive bus, and the second contact of the second controlled power relay is electrically connected to the state control terminal (101) of the first vehicle-mounted external device (100).

4. The multi-mode vehicle-mounted equipment application vehicle system according to claim 3, characterized in that: The plurality of first vehicle-mounted external devices (100) are front working lights, strobe lights, inverted screens, LED screens or laser lights.

5. The multi-mode vehicle-mounted equipment application vehicle system according to claim 3, characterized in that: A plurality of second branches are arranged between the positive bus and the negative bus, each of the second branches is provided with a third controlled power relay and a second vehicle-mounted external device, one end of the coil of the third controlled power relay is electrically connected to the positive bus, the other end of the coil of the third controlled power relay is grounded, the first contact of the third controlled power relay is electrically connected to the positive bus, the second contact of the third controlled power relay is electrically connected to the positive pole of the second vehicle-mounted external device, and the negative pole of the second vehicle-mounted external device is electrically connected to the negative bus.

6. The multi-mode vehicle-mounted equipment application vehicle system according to claim 5, characterized in that: It also includes a remote control unit and a bus switch, wherein the normally open contact of the first power-on relay J1 is also electrically connected to the bus switch, and the bus switch electrically connects the positive pole of the vehicle-mounted battery (400) to the remote control unit; a plurality of normally open remote control switches are independently arranged on the remote control unit, and the plurality of normally open remote control switches are electrically connected to the non-grounded end of the coil of the first controlled power relay, the non-grounded end of the second controlled power relay, or the state control end (101) of the first vehicle-mounted external device (100).

7. The multi-mode vehicle-mounted equipment application vehicle system according to claim 6, characterized in that: The first contact and the second contact of the first controlled power relay are normally open contacts or normally closed contacts, and the first contact and the second contact of the second controlled power relay are normally open contacts.

8. The multi-mode vehicle-mounted equipment application vehicle system according to claim 6, characterized in that: The plurality of second vehicle-mounted external devices are cabin lamp assemblies, cameras, warning lights, sirens or lifting lighting lamps.

9. A method for using a multi-mode vehicle-mounted equipment application vehicle system, characterized in that: It includes the following: Configure the multi-mode vehicle-mounted equipment application vehicle system as described in any one of claims 4 to 8; arrange a plurality of first vehicle-mounted external devices (100) and second vehicle-mounted external devices on the vehicle; The automobile central control is wirelessly connected to the vehicle gateway (200), the LED screen and the inverted screen respectively; the 485 relay action unit (300) is communicatively connected to the vehicle gateway (200); the automobile central control is also wirelessly connected to the LED screen, and the automobile central control edits the content displayed on the LED screen; the 485 relay action unit (300) comprises a plurality of first action output coils, a second action output coil, a plurality of IO ports and a plurality of sensor input terminals, and the first action output coil and the second action output coil are respectively configured with contact pairs; A positive busbar is led out from the positive electrode of the vehicle-mounted storage battery (400), and a negative busbar is led out from the negative electrode; the positive electrodes of the vehicle-mounted gateway (200) and the 485 relay action unit (300) are respectively electrically connected to the normally open contact of the first power-on relay J1, and the negative electrodes of the vehicle-mounted gateway (200) and the 485 relay action unit (300) are respectively electrically connected to the negative busbar; after the first power-on relay J1 is turned on and the vehicle ignition is closed, the vehicle-mounted gateway (200) and the 485 relay action unit (300) are powered on; five first branches and five second branches are arranged between the positive busbar and the negative busbar; Wherein, each first branch is respectively provided with a first action output coil, a first controlled power supply relay and a first vehicle-mounted external device (100); the output contact pair corresponding to the first action output coil is respectively electrically connected to the positive bus and one end of the coil of the first controlled power supply relay, the other end of the coil of the first controlled power supply relay is grounded, the first contact of the first controlled power supply relay is electrically connected to the positive bus, the second contact of the first controlled power supply relay on the first branch is electrically connected to the positive pole of the first vehicle-mounted external device (100), and the negative pole of the first vehicle-mounted external device (100) is electrically connected to the negative bus; The first vehicle-mounted external device (100) is also provided with a state control terminal (101), and a second action output coil is provided between the state control terminal (101) and the positive bus or the negative bus: when the second action output coil is located between the state control terminal (101) and the negative bus, the contact pair corresponding to the second action output coil is electrically connected to the control terminal and the negative bus of the first vehicle-mounted external device (100) respectively; when the second action output coil is located between the state control terminal (101) and the positive bus, a second controlled power supply relay is additionally provided, and the contact pair corresponding to the second action output coil is electrically connected to the positive bus and one end of the coil of the second controlled power supply relay respectively, and the other end of the coil of the second controlled power supply relay is grounded; the first contact of the second controlled power supply relay is electrically connected to the positive bus, and the second contact of the second controlled power supply relay is electrically connected to the state control terminal (101) of the first vehicle-mounted external device (100); The automobile central control sends an action signal to the second action output coil via the vehicle gateway (200) and the 485 relay action unit (300), so that the state control terminal (101) obtains the control signal, thereby changing the working state of the first vehicle-mounted external device (100) in the powered-on state; each second branch is respectively provided with a third controlled power supply relay and a second vehicle-mounted external device, and the automobile central control sends an action signal to the third controlled power supply relay via the vehicle gateway (200), so as to enable or disable the second vehicle-mounted external device; A remote control unit and a bus switch are arranged on the vehicle; when the switch is in a normally closed state, the first action output coil, the second action output coil and the coil of the third controlled power relay are powered on respectively, and the automobile central control adjusts the working state of the first vehicle-mounted external device (100) and the second vehicle-mounted external device through a wireless communication method, an on-board gateway and a 485 relay action unit; when the moving contact of the switch is actuated, the switch is electrically connected to the remote control unit, and the remote control unit includes a plurality of normally open remote control switches, which are connected to the first controlled power relay. The non-grounded end of the coil of the first controlled power relay, the non-grounded end of the second controlled power relay or the state control end (101) of the first vehicle-mounted external device (100) is electrically connected to power on the coil of the first controlled power relay, power on the coil of the second controlled power relay or drive the state control end (101) of the first vehicle-mounted external device (100) to realize manual input when the vehicle-mounted gateway (200) or the 485 relay action unit (300) is abnormal, and at this time, the normally open remote control switch adjusts the working state of the first vehicle-mounted external device (100) and the second vehicle-mounted external device.

10. The method for using a multi-mode vehicle-mounted equipment application vehicle system according to claim 9, characterized in that: The automobile central control in step S5 adjusts the working state of the first vehicle-mounted external device (100) and the second vehicle-mounted external device by wireless communication, and after the vehicle-mounted ignition is started, the first power-on relay J1 is closed, and the switching switch is in a normally closed state, and the automobile central control drives the first vehicle-mounted external device (100) and the second vehicle-mounted external device through the gateway or directly: 1) After the vehicle is started, the IO port configured by the 485 relay action unit (300) outputs a high level, enabling the third controlled power relay and the second vehicle-mounted external device on the second branch, so that the cabin light assembly, camera, warning light, siren and lifting lighting configured on the vehicle all enter and maintain a working state, indicating the current position and outline of the vehicle, and illuminating a designated area near the vehicle through the lifting lighting; the lifting lighting is provided with a first position sensor at the horizontal lowering limit position and the raising limit position, respectively, and the output end of the first position sensor is electrically connected to the first sensor input end and the second sensor input end of the 485 relay action unit (300) respectively, and outputs a first position sensor signal for indicating the current lifting lighting, and the first position sensor signal is fed back to the vehicle central control through the 485 relay action unit (300) and the vehicle-mounted gateway (200); 2) Then, the automobile central control sends a power-on command through the vehicle gateway (200), and the first action output coil of the 485 relay action unit (300) is actuated, so that the coil of the first controlled power relay of the corresponding first branch is powered on, and the contacts of the first controlled power relay are closed, so that the front working lights, strobe lights, inverted screen, LED screen and laser lights are all powered on, and each first vehicle-mounted external device (100) enters an initial working state; the automobile central control edits the content displayed on the LED screen or the inverted screen, and wirelessly sends it to the LED screen or the inverted screen; 3) The laser light and the inverted screen are respectively provided with a state control terminal (101); the state control terminal (101) of the laser light is electrically connected to the negative busbar through the contact pair of the second action output coil, and the automobile central control sends a laser light action instruction through the vehicle gateway (200), so that the first action output coil of the 485 relay action unit (300) is intermittently actuated, so that the laser light enters a flashing state, and the frequency of the laser light flashing state switches between set frequency discrete values; the state control terminal (101) of the inverted screen realizes sequential control through the contacts of the second action output coil and the coil of the second controlled power supply relay, and the automobile central control An action command is issued through the vehicle gateway (200), so that the inverted screen in the powered-on state rotates and rises, and displays content to the target behind the vehicle; second position sensors are respectively provided at the inverted and raised extreme positions of the inverted screen, and the second position sensors are respectively electrically connected to the third sensor input terminal and the fourth sensor input terminal of the 485 relay action unit (300), and output a second position sensor signal for indicating the current position of the inverted screen, and the second position sensor signal is fed back to the central control of the car through the 485 relay action unit (300) and the vehicle gateway (200); the laser light and the inverted screen respectively provide warning signals for nearby vehicles; 4) When the first vehicle-mounted external device (100) and the second vehicle-mounted external device need to be turned off, the vehicle central control first sets the state control terminal (101) through the 485 relay action unit (300) to make the laser light exit from the flashing state and the inverted screen return to the initial horizontal inverted position, then the 485 relay action unit (300) sets the first action output coil, the front working light, the strobe light, the inverted screen, the LED screen and the laser light all stop working, and the 485 relay action unit (300) feeds back the current position of the inverted screen to the vehicle central control through the vehicle gateway (200); then the 485 relay action unit (300) sets the third controlled power supply relay to reset the second vehicle-mounted external device and stop working, and the 485 relay action unit (300) feeds back the current position of the lifting lighting lamp to the vehicle central control through the vehicle gateway (200); when the positions of the inverted screen and the lifting lighting lamp are correct, after the vehicle is turned off, the first power-on relay J1 is de-energized, and the system completes the reset.

Images