CN106347523B - Trailer compartment identification device based on 1-Wire and method - Google Patents
Trailer compartment identification device based on 1-Wire and method Download PDFInfo
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- CN106347523B CN106347523B CN201610860632.4A CN201610860632A CN106347523B CN 106347523 B CN106347523 B CN 106347523B CN 201610860632 A CN201610860632 A CN 201610860632A CN 106347523 B CN106347523 B CN 106347523B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D63/00—Motor vehicles or trailers not otherwise provided for
- B62D63/06—Trailers
- B62D63/08—Component parts or accessories
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
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- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
A kind of trailer compartment identification device based on 1 Wire, including one be arranged on trailer headstock main equipment, one be arranged in trailer compartment secondary equipment, a relay, the main equipment connected with secondary equipment by ground wire；One 1 Wire chips are respectively set in the main equipment and secondary equipment；It is separately connected one 1 Wire data lines in the main equipment and secondary equipment, connect a pilot in the pair equipment, 1 Wire data lines on the main equipment, 1 Wire data lines in secondary equipment, the pilot in secondary equipment the other end be connected on the relay.It using the present invention, realizes when cornering lamp is opened, main equipment and secondary equipment are closed；When cornering lamp is closed, main equipment and secondary equipment are opened.When cornering lamp is closed, 1 Wire chips of main equipment read the ID of 1 Wire chips in secondary equipment, realize the real time monitoring to compartment.
Description
Technical field
The present invention relates to the identification fields of trailer compartment, and in particular to a kind of trailer compartment identification device based on 1-Wire
And method.
Background technology
With the rapid development of vehicle-mounted Internet of Things, more and more vehicle electronics products be used to extend the related work(of vehicle
Can, correlation function includes the functions such as vehicle location, trailer alarm and compartment monitoring.
There are certain separation relations between trailer compartment and headstock, because this separation relation causes trailer to rear end vehicle
The monitoring deficiency in compartment, the exception of trailer carriage after cannot effectively finding, there are the risks that compartment is stolen.And trailer is because often
The problem of needing replacing trunk, being easy to happen misplaced compartment.
In order to avoid the above problem, conventional method is to use manual method regular check at present, therefore to staff
For it is comparable cumbersome, waste of manpower while, also increases the difficulty of company management.
Invention content
The trailer compartment identification based on 1-Wire that It is an object of the present invention to solve the deficiency of the existing technology and provide a kind of
Device and method, can be in the case where not influencing trailer compartment and headstock circuit connecting mode, using turning lamp driver, effectively
Monitoring and label of the realization to trunk.
The purpose of the present invention is what is be achieved through the following technical solutions：
The present invention provides a kind of trailer compartment identification device based on 1-Wire, including one be arranged on trailer headstock
Secondary equipment that main equipment, one are arranged in trailer compartment, a relay, the main equipment are connected with secondary equipment by ground wire；
A 1-Wire chips are respectively set in the main equipment and secondary equipment；
A 1-Wire data lines are separately connected on the main equipment and secondary equipment, connecting a control in the pair equipment leads
Line, the 1-Wire data lines on the main equipment, the 1-Wire data lines in secondary equipment, the pilot in secondary equipment it is another
End is connected on the relay；
The cornering lamp of trailer is connect with a high voltage power supply and the relay respectively by conducting wire, the turning of the cornering lamp
One end of lamp power cord is connect with the relay, and the other end is connect with the high voltage power supply；The cornering lamp power cord and institute
The 1-Wire data lines for stating main equipment are connected；
In the relay, connected by a conducting wire between the cornering lamp power cord and pilot, at described turn
It is connected with a magnetic coil on conducting wire between curved lamp power cord and pilot；The 1-Wire data lines of the main equipment connect
One end of relay is connect with a conducting wire, and the end of conducting wire is provided with a switch, the switch can be connected to the cornering lamp or
The 1-Wire data lines of the main equipment.
A kind of above-mentioned trailer compartment identification device based on 1-Wire, wherein the 1-Wire chips in the main equipment
For the 1-Wire chips DS2482 of MAXIM, the 1-Wire chip DS2431 that the 1-Wire chips in the pair equipment are MAXIM,
The 1-Wire chips DS2482 is used to read the ID number of the 1-Wire chips DS2431 in secondary equipment by 1-Wire data lines.
Above-mentioned a kind of trailer compartment identification device based on 1-Wire a, wherein shutdown is set in the main equipment
Circuit, the breaking circuit are connect with 1-Wire chips, the relay in the main equipment respectively by 1-Wire data lines；Institute
State 1-Wire data line and cornering lamp power supply of the breaking circuit for when detecting that the high voltage power supply is opened, disconnecting main equipment
The connection of line.
Above-mentioned a kind of trailer compartment identification device based on 1-Wire, wherein the main equipment further includes a MCU, institute
The 1-Wire chips stated in main equipment are connect by iic bus with the MCU, and the MCU exports result by serial ports and sends to
Exterior terminal equipment.
A kind of above-mentioned trailer compartment identification device based on 1-Wire, wherein the breaking circuit include resistance R101,
Resistance R102, resistance R104, voltage-stabiliser tube D101, triode Q105, metal-oxide-semiconductor Q104；The resistance R101, resistance R102, voltage stabilizing
Pipe D101 is connected in series with, and the resistance R101 is connect with ground wire, and the ground level of the triode Q105 is connected to resistance R101, resistance
On conducting wire between R102, the emitter and collector of the triode Q105 is connect with ground wire, resistance R104 respectively；It is described
The grid of metal-oxide-semiconductor Q104 is connected on the conducting wire between the triode Q105, resistance R104, the drain electrode of the metal-oxide-semiconductor Q104
It is connect respectively with the voltage-stabiliser tube D101, the ends DATA with source electrode；The relay is connected to described by 1-Wire data lines
On conducting wire between voltage-stabiliser tube D101 and metal-oxide-semiconductor Q104.
A kind of above-mentioned trailer compartment identification device based on 1-Wire, wherein one switching of setting in the secondary equipment
Circuit, the switching circuit are connect with 1-Wire chips, the relay in the secondary equipment respectively by 1-Wire data lines；Institute
Switching circuit is stated to connect with the relay by the pilot；For the switching circuit for controlling relay, switching is secondary
Connection between the 1-Wire data lines of equipment, cornering lamp and cornering lamp power cord.
A kind of above-mentioned trailer compartment identification device based on 1-Wire, wherein the switching circuit include resistance R107,
Resistance R109, resistance R103, resistance R108, resistance R105, resistance R106, triode Q102, voltage-stabiliser tube D102, voltage-stabiliser tube
D103, voltage-stabiliser tube D104, metal-oxide-semiconductor Q101, metal-oxide-semiconductor Q103；The resistance R107 and resistance R109 are connected in series with, the resistance
R103, resistance R108, voltage-stabiliser tube D102 are connected in series with, and the resistance R107, resistance R103 are connect with ground wire, the resistance R109
The other end be connected on the conducting wire between resistance R108 and voltage-stabiliser tube D102；The grid of the metal-oxide-semiconductor Q101 is connected to R107
On conducting wire between resistance R109, the drain electrode of the metal-oxide-semiconductor Q101 and source electrode connect with the ends RELAY_CTRL, ground wire respectively
It connects；The ground level of the triode Q102 is connected on the conducting wire between the resistance R103 and resistance R108, the triode
The emitter and collector of Q102 is connect with ground wire, resistance R105 respectively；The grid of the metal-oxide-semiconductor Q103 is connected to resistance R105
On conducting wire between triode Q102, the drain electrode of the metal-oxide-semiconductor Q103 and source electrode respectively with the 1-Wire chips of secondary equipment,
Line connects；The resistance R106 is separately connected 1-Wire chips and the ends 1-WIRE of secondary equipment；The voltage-stabiliser tube D103 and MOS
Pipe Q103, secondary equipment 1-Wire chips between conductor in parallel connection；The voltage-stabiliser tube D104 respectively with ground wire, the grid of Q103
Conducting wire connection on extremely；The relay is connect by 1-Wire data lines with the ends 1-WIRE, and the relay passes through control
Conducting wire processed is connect with the ends RELAY_CTRL.
The trailer compartment recognition methods based on 1-Wire that the present invention also provides a kind of, using above-mentioned based on 1-Wire's
Trailer compartment identification device is identified, and at least includes the following steps：
S100, when trailer is turned, the 1-Wire data lines on the main equipment are disconnected with cornering lamp power cord；
S200, when trailer is turned, the switching circuit control the switch and the secondary equipment 1-Wire data lines,
Connection between cornering lamp；The cornering lamp flicker；
S300, when trailer is not turned, the relay disconnects the cornering lamp power cord of cornering lamp and cornering lamp, is connected to
On the 1-Wire data lines of secondary equipment；1-Wire data lines on main equipment are connect with cornering lamp power cord；The 1- of main equipment
Wire chips read the ID of the 1-Wire chips in secondary equipment；
The main equipment is internally integrated associated cars data, is transmitted by iic bus with the 1-Wire chips of main equipment
The ID come is compared, and with the ID of trailer compartment match, result is output to terminal device by the MCU by serial ports.
Further, the step S100 specifically includes following steps：
When trailer is turned, the high voltage power supply of cornering lamp is opened, and on network 1-WIRE is high-voltage electricity on the breaking circuit,
Higher than voltage-stabiliser tube D101 reverse turn-on voltages, logic high, the metal-oxide-semiconductor Q104 grid are generated on the triode Q105 ground levels
Extremely upper voltage is 0, and metal-oxide-semiconductor Q104 is closed, and network DATA and network 1-WIRE are disconnected, the 1-Wire data lines on the main equipment
It is disconnected with cornering lamp power cord.
Further, the step S200 specifically includes following steps：
When trailer is turned, the high voltage power supply of cornering lamp is opened, and the switch in the relay is located at the position on the right, with
The 1-Wire data lines of secondary equipment connect；
The high voltage power supply of initial turn-on cornering lamp on the ends 1-WIRE in switching circuit, the voltage on network 1-WIRE are higher than
Voltage-stabiliser tube D102 reverse turn-on voltages, the voltage in the base stage of triode Q102 are logic high, and triode Q102 is opened；
The grid of the metal-oxide-semiconductor Q103 becomes low level, and metal-oxide-semiconductor Q103 is closed；The GND of the 1-Wire chips of secondary equipment is disconnected, 1-
Wire chips are stopped, and network 1-WIRE is stopped；
The grid of the metal-oxide-semiconductor Q101 is high level, and metal-oxide-semiconductor Q101 is opened, and the voltage of pilot is 0 at this time, control
External relay is powered；It is described to switch the position for being allocated to the left side after relay power, it is connect with pilot, turn on automatically turns
Curved lamp and cornering lamp power cord, make cornering lamp be connected to high voltage power supply, cornering lamp is bright；
The connection for simultaneously switching off the 1-Wire data lines and cornering lamp power cord of secondary equipment, after disconnection, the pair equipment
Tension discharge on 1-Wire data lines is to 0V；The metal-oxide-semiconductor Q101, triode Q102, metal-oxide-semiconductor Q103 logic level can be with
Reduction, pilot becomes floating state and is high-voltage electricity, and relay power-off disconnects the company between cornering lamp and high voltage power supply
It connects, cornering lamp goes out；
It when the high voltage power supply is opened, repeats the above steps, the cornering lamp keeps flicker.
Further, the step S300 specifically includes following steps：
When trailer is not turned, the high voltage power supply of cornering lamp is closed, and on external connection network 1-WIRE is low on breaking circuit
Piezoelectricity, is less than voltage-stabiliser tube D101 reverse turn-on voltages, is logic low on the triode Q105 ground levels, and triode Q105 is closed
It closes, voltage is logic high on the metal-oxide-semiconductor Q104 grids, and metal-oxide-semiconductor Q104 is opened, at this time network DATA and network 1-WIRE
It connects, transmits 1-Wire data-signals；
Simultaneously the switching circuit network 1-WIRE on voltage be less than voltage-stabiliser tube D102 reverse turn-on voltages, described three
Voltage in the base stage of pole pipe Q102 is low level, and triode Q102 is in off state；Then the grid of the metal-oxide-semiconductor Q103 is height
Level, metal-oxide-semiconductor Q103 are opened, and 1-Wire chips and the ground wire of secondary equipment are connected, 1-Wire chips normal work；It is described at this time
The grid of metal-oxide-semiconductor Q101 is low level, and metal-oxide-semiconductor Q101 is closed, and pilot is floating state, then the control terminal of relay at this time
It is powered, the relay keeps the connected state of the signal of main equipment and the 1-Wire data lines of secondary equipment, the 1- of main equipment
Wire chips constantly read the ID number of the 1-Wire chips in secondary equipment by 1-Wire data lines.
Therefore, when the voltage of pilot is 0, the cornering lamp power cord of cornering lamp is connected to turning by relay
On lamp, cornering lamp power cord and the 1-Wire data lines of secondary equipment is made to disconnect；Simultaneously the 1-Wire data lines on main equipment with turn
Curved lamp power cord disconnects.When pilot be floating state when, relay by the cornering lamp power cord of cornering lamp with
Cornering lamp disconnects, and is connected on the 1-Wire data lines of secondary equipment；1-Wire data lines on main equipment connect with cornering lamp power cord
It connects.It realizes when cornering lamp is opened, main equipment and secondary equipment are closed；When cornering lamp is closed, main equipment and pair
Equipment is opened.
Therefore, when cornering lamp is closed, the 1-Wire chips DS2482 of main equipment reads the 1-Wire in secondary equipment
The ID of chip DS2431 realizes that the real time monitoring to compartment, main equipment are internally integrated associated cars data, can be with 1-Wire cores
Piece DS2482 is compared by the ID that IIC is sent, and realizes that the matching of trailer ID, last MCU are defeated by serial ports by result
Go out to terminal device.
In conclusion the invention has the advantages that and advantageous effect：
1, one secondary equipment is set on each trailer compartment, the 1-Wire chips of each pair equipment have individual ID number,
Realize the label to each compartment；
2, it when cornering lamp is closed, by reading the ID number of the 1-Wire chips in secondary equipment, realizes to rear car
Compartment automation in place is checked, monitors the situation in rear car compartment in real time；
3, installation circuit can be reduced to greatest extent, and the present invention is realized using headstock with the existing cornering lamp cable in compartment
Communication, there is no the additional wiring for increasing cable connection and protection problems, to reduce the cumbersome of installation, increase equipment fortune
Capable reliability；
4, main equipment is exported using serial ports as a result, multiple terminal equipment can be output to, such as vehicle-mounted PDA, vehicle-mounted tracker
Deng.
Description of the drawings
Fig. 1 is the structure diagram of the trailer compartment identification device the present invention is based on 1-Wire；
Fig. 2 is the principle frame that the main equipment of the trailer compartment identification device the present invention is based on 1-Wire is connect with other devices
Figure；
Fig. 3 is the principle frame that the secondary equipment of the trailer compartment identification device the present invention is based on 1-Wire is connect with other devices
Figure；
Fig. 4 is that the present invention is based on the breaking circuit schematic diagrames in the main equipment of the trailer compartment identification device of 1-Wire；
Fig. 5 is that the present invention is based on the switching circuit schematic diagrames in the secondary equipment of the trailer compartment identification device of 1-Wire.
Specific implementation mode
The specific implementation mode of the present invention is described in further detail below in conjunction with the accompanying drawings.
The present invention provides a kind of trailer compartment identification device and method based on 1-Wire, refers to Fig. 1, described device
Including one be arranged on trailer headstock main equipment, one be arranged in trailer compartment secondary equipment, a relay, the main equipment
It is connected by ground wire with secondary equipment.
A 1-Wire chips are respectively set in the main equipment and secondary equipment, the 1-Wire chips in the main equipment are
The 1-Wire chips DS2482 of MAXIM company, the 1-Wire chips in the pair equipment are the 1-Wire chips of MAXIM company
DS2431, the 1-Wire chips DS2431 in secondary equipment have unique ID number.1-Wire chips DS2482 in the main equipment
ID number for reading the 1-Wire chips DS2431 in secondary equipment by 1-Wire data lines.
Fig. 1 is referred to, a 1-Wire data lines are separately connected on the main equipment and secondary equipment, are connected in the pair equipment
One pilot, the 1-Wire data lines on the main equipment, the 1-Wire data lines in secondary equipment, the control in secondary equipment are led
The other end of line is connected on the relay.
The cornering lamp of trailer is connect with a high voltage power supply and the relay respectively by conducting wire, the turning of the cornering lamp
One end of lamp power cord is connect with the relay, and the other end is connect with the high voltage power supply.The cornering lamp power cord and institute
The 1-Wire data lines for stating main equipment are connected.
In the relay, connected by a conducting wire between the cornering lamp power cord and pilot, at described turn
It is connected with a resistance on conducting wire between curved lamp power cord and pilot.The 1-Wire data lines of the main equipment connect relay
One end of device is connect with a conducting wire, the end of conducting wire is provided with a switch, the switch can be connected to the cornering lamp or described
The 1-Wire data lines of main equipment.
Refer to Fig. 2, the main equipment further includes a MCU, the 1-Wire chips in the main equipment by iic bus with
The MCU connections, the MCU export result by serial ports and send exterior terminal equipment to.
One breaking circuit is set in the main equipment, the breaking circuit by 1-Wire data lines respectively with the master
1-Wire chips, relay connection in equipment；The breaking circuit is used to, when detecting that the high voltage power supply is opened, disconnect
The connection of the 1-Wire data lines and cornering lamp power cord of main equipment prevents the high voltage of high voltage power supply from damaging main equipment.
Fig. 4 is referred to, the breaking circuit includes resistance R101, resistance R102, resistance R104, voltage-stabiliser tube D101, three poles
Pipe Q105, metal-oxide-semiconductor Q104.The resistance R101, resistance R102, voltage-stabiliser tube D101 are connected in series with, the resistance R101 and ground wire
Connection, the ground level of the triode Q105 are connected on the conducting wire between resistance R101, resistance R102, the triode Q105's
Emitter and collector is connect with ground wire, resistance R104 respectively；The grid of the metal-oxide-semiconductor Q104 is connected to the triode
On conducting wire between Q105, resistance R104, the drain electrode of the metal-oxide-semiconductor Q104 and source electrode respectively with the voltage-stabiliser tube D101, one
The ends DATA connect.The relay is connected to leading between the voltage-stabiliser tube D101 and metal-oxide-semiconductor Q104 by 1-Wire data lines
On line.
Fig. 3 is referred to, a switching circuit is set in the secondary equipment, the switching circuit passes through 1-Wire data lines point
It is not connect with 1-Wire chips, the relay in the secondary equipment；The switching circuit by the pilot with it is described after
Electric appliance connects.The switching circuit switches the 1-Wire data lines, cornering lamp and cornering lamp electricity of secondary equipment for controlling relay
Connection between the line of source.
Fig. 5 is referred to, the switching circuit includes resistance R107, resistance R109, resistance R103, resistance R108, resistance
R105, resistance R106, triode Q102, voltage-stabiliser tube D102, voltage-stabiliser tube D103, voltage-stabiliser tube D104, metal-oxide-semiconductor Q101, metal-oxide-semiconductor
Q103.The resistance R107 and resistance R109 are connected in series with, and the resistance R103, resistance R108, voltage-stabiliser tube D102 are connected in series with,
The resistance R107, resistance R103 are connect with ground wire, and the other end of the resistance R109 is connected to resistance R108 and voltage-stabiliser tube
On conducting wire between D102；The grid of the metal-oxide-semiconductor Q101 is connected on the conducting wire between R107 and resistance R109, the MOS
The drain electrode of pipe Q101 and source electrode are connect with the ends RELAY_CTRL, ground wire respectively；The ground level of the triode Q102 is connected to institute
State on the conducting wire between resistance R103 and resistance R108, the emitter and collector of the triode Q102 respectively with ground wire, electricity
Hinder R105 connections；The grid of the metal-oxide-semiconductor Q103 is connected on the conducting wire between resistance R105 and triode Q102, the MOS
The drain electrode of pipe Q103 and source electrode are connect with 1-Wire chips, the ground wire of secondary equipment respectively；The resistance R106 is separately connected pair and sets
Standby 1-Wire chips and the ends 1-WIRE；The voltage-stabiliser tube D103 and metal-oxide-semiconductor Q103, secondary equipment 1-Wire chips between
Conductor in parallel；The voltage-stabiliser tube D104 respectively with ground wire, Q103 grid on conducting wire connect.The relay passes through 1-Wire
Data line is connect with the ends 1-WIRE, and the relay is connect by pilot with the ends RELAY_CTRL
Refer to Fig. 1, relay default conditions and secondary equipment, the connection status of main equipment and relay as shown in Figure 1,
Pilot is floating state at this time.
Refer to Fig. 1, Fig. 2 and Fig. 4, the breaking circuit of main equipment is as shown in figure 4, in Fig. 4, the breaking circuit of main equipment
Network DATA on figure is the 1-Wire data lines of main equipment, and the network 1-WIRE on breaking circuit figure is connected to external relay
Device, breaking circuit control the metal-oxide-semiconductor between this 2 networks control cornering lamp power cord and main equipment 1-Wire data lines it
Between break-make.
When trailer is turned, the high voltage power supply of cornering lamp is opened, and on network 1-WIRE is high-voltage electricity on breaking circuit, at this time
Voltage is higher than voltage-stabiliser tube D101 reverse turn-on voltages, to make to generate logic high on triode Q105 ground levels, metal-oxide-semiconductor at this time
Voltage is 0 on Q104 grids, and metal-oxide-semiconductor Q104 is closed, and network DATA and network 1-WIRE are disconnected at this time, the 1-Wire on main equipment
Data line is disconnected with cornering lamp power cord.
When trailer is not turned, the high voltage power supply of cornering lamp is closed, and on external connection network 1-WIRE is low on breaking circuit
Piezoelectricity, at this time voltage be less than voltage-stabiliser tube D101 reverse turn-on voltages, be logic low, triode on triode Q105 ground levels
Q105 is closed, and voltage is logic high on metal-oxide-semiconductor Q104 grids at this time, and metal-oxide-semiconductor Q104 is opened, at this time network DATA and network
1-WIRE is connected, and transmits 1-Wire data-signals.
Fig. 1, Fig. 3 and 5 are referred to, the switching circuit in secondary equipment is as shown in figure 5, the ends 1-WIRE on switching circuit figure are logical
1-Wire data lines connection relay is crossed, the ends RELAY_CTRL on switching circuit figure connect relay by pilot.
Fig. 1 is referred to, when trailer is turned, the high voltage power supply of cornering lamp is opened, and the switch in relay is positioned at the right
Position is connect with the 1-Wire data lines of secondary equipment.Fig. 5 is referred to, at this point, initially being connect on the ends 1-WIRE on switching circuit figure
The high voltage power supply of logical cornering lamp, the voltage on network 1-WIRE is higher than voltage-stabiliser tube D102 reverse turn-on voltages at this time, in triode
Voltage in the base stage of Q102 is logic high, and Q102 is opened.The grid of metal-oxide-semiconductor Q103 becomes low level, metal-oxide-semiconductor at this time
Q103 is closed；The GND of 1-Wire chips U102 is disconnected, and 1-Wire chips U102 is stopped, and network 1-WIRE is stopped.
Meanwhile the grid of metal-oxide-semiconductor Q101 is also high level at this time, metal-oxide-semiconductor Q101 is opened, and the voltage of pilot becomes at this time
It is 0, control external relay is powered.It is described to switch the position for being allocated to the left side after relay power, it is connect with pilot, from
It is dynamic to connect cornering lamp and cornering lamp power cord, so that cornering lamp is connected to high voltage power supply, cornering lamp is bright.
Meanwhile being disconnected the connection of the 1-Wire data lines and cornering lamp power cord of secondary equipment, after disconnection, secondary equipment
Voltage on 1-Wire data lines can be discharged to 0V.Hereafter, the logic level of metal-oxide-semiconductor Q101, triode Q102, metal-oxide-semiconductor Q103
It can decrease, pilot becomes floating state and is high voltage, and relay can power off, and be then turned off cornering lamp and high-voltage electricity
Connection between source, cornering lamp go out.
When high voltage power supply is opened, the above process can repeat always, and cornering lamp can then keep flickering always.
Fig. 1, Fig. 3 and Fig. 5 are referred to, when trailer is not turned, the high voltage power supply of cornering lamp is closed, and height is not present at this time
It presses, the voltage on network 1-WIRE is less than voltage-stabiliser tube D102 reverse turn-on voltages, at this time the voltage in the base stage of triode Q102
For low level, triode Q102 is in off state, then the grid of metal-oxide-semiconductor Q103 is high level, and metal-oxide-semiconductor Q103 is opened, 1-Wire
It connects to chip DS2431, chip normal work.
Meanwhile the grid of metal-oxide-semiconductor Q101 is low level at this time, metal-oxide-semiconductor Q101 is closed, and pilot is floating shape at this time
State, then the control terminal of relay is powered at this time, and relay can keep the signal of main equipment and the 1-Wire data lines of secondary equipment
Connected state, the 1-Wire chips DS2482 of main equipment constantly remove to read the 1-Wire cores in secondary equipment by 1-Wire data lines
The ID number of piece DS2431.
Therefore, when the voltage of pilot is 0, the cornering lamp power cord of cornering lamp is connected to turning by relay
On lamp, cornering lamp power cord and the 1-Wire data lines of secondary equipment is made to disconnect；Simultaneously the 1-Wire data lines on main equipment with turn
Curved lamp power cord disconnects.When pilot be floating state when, relay by the cornering lamp power cord of cornering lamp with
Cornering lamp disconnects, and is connected on the 1-Wire data lines of secondary equipment；1-Wire data lines on main equipment connect with cornering lamp power cord
It connects.It realizes when cornering lamp is opened, main equipment and secondary equipment are closed；When cornering lamp is closed, main equipment and pair
Equipment is opened.
Therefore, when cornering lamp is closed, the 1-Wire chips DS2482 of main equipment reads the 1-Wire in secondary equipment
The ID of chip DS2431 realizes that the real time monitoring to compartment, main equipment are internally integrated associated cars data, can be with 1-Wire cores
Piece DS2482 is compared by the ID that IIC is sent, and realizes that the matching of trailer ID, last MCU are defeated by serial ports by result
Go out to terminal device.
In conclusion the invention has the advantages that and advantageous effect：
1, one secondary equipment is set on each trailer compartment, the 1-Wire chips of each pair equipment have individual ID number,
Realize the label to each compartment；
2, it when cornering lamp is closed, by reading the ID number of the 1-Wire chips in secondary equipment, realizes to rear car
Compartment automation in place is checked, monitors the situation in rear car compartment in real time；
3, installation circuit can be reduced to greatest extent, and the present invention is realized using headstock with the existing cornering lamp cable in compartment
Communication, there is no the additional wiring for increasing cable connection and protection problems, to reduce the cumbersome of installation, increase equipment fortune
Capable reliability；
4, main equipment is exported using serial ports as a result, multiple terminal equipment can be output to, such as vehicle-mounted PDA, vehicle-mounted tracker
Deng.
Embodiment described above is merely to illustrate the technological thought and feature of the present invention, in the art its object is to make
Technical staff can understand the content of the present invention and implement it accordingly, cannot only with the present embodiment come limit the present invention patent model
It encloses, i.e., it is all according to same changes or modifications made by disclosed spirit, it still falls in the scope of the claims of the present invention.
Claims (8)
1. a kind of trailer compartment identification device based on 1-Wire, which is characterized in that the master on trailer headstock is arranged including one
Secondary equipment that equipment, one are arranged in trailer compartment, a relay, the main equipment are connected with secondary equipment by ground wire；Institute
It states in main equipment and secondary equipment and a 1-Wire chips is respectively set；
It is separately connected a 1-Wire data lines on the main equipment and secondary equipment, a pilot, institute are connected in the pair equipment
State the other end point of the 1-Wire data lines on main equipment, the 1-Wire data lines in secondary equipment, the pilot in secondary equipment
It is not connected on the relay；
The cornering lamp of trailer is connect with a high voltage power supply and the relay respectively by conducting wire, the cornering lamp electricity of the cornering lamp
One end of source line is connect with the relay, and the other end is connect with the high voltage power supply；The cornering lamp power cord and the master
The 1-Wire data lines of equipment are connected；
In the relay, connected by a conducting wire between the cornering lamp power cord and pilot, in the cornering lamp
A magnetic coil is connected on conducting wire between power cord and pilot；The 1-Wire data lines of the main equipment connect relay
One end of device is connect with a conducting wire, the end of conducting wire is provided with a switch, the switch can be connected to the cornering lamp or described
The 1-Wire data lines of main equipment.
2. a kind of trailer compartment identification device based on 1-Wire according to claim 1, which is characterized in that the master sets
The 1-Wire chips DS2482 that 1-Wire chips in standby are MAXIM, the 1- that the 1-Wire chips in the pair equipment are MAXIM
Wire chips DS2431, the 1-Wire chips DS2482 are used to pass through the 1-Wire cores in the secondary equipment of 1-Wire data lines reading
The ID number of piece DS2431.
3. a kind of trailer compartment identification device based on 1-Wire according to claim 1, which is characterized in that in the master
One breaking circuit is set in equipment, the breaking circuit by 1-Wire data lines respectively with the 1-Wire cores in the main equipment
Piece, relay connection；The breaking circuit is used to, when detecting that the high voltage power supply is opened, disconnect the 1-Wire numbers of main equipment
According to the connection of line and cornering lamp power cord.
4. a kind of trailer compartment identification device based on 1-Wire according to claim 3, which is characterized in that the master sets
Standby further includes a MCU, and the 1-Wire chips in the main equipment are connect by iic bus with the MCU, and the MCU passes through string
Mouth output result sends exterior terminal equipment to.
5. a kind of trailer compartment identification device based on 1-Wire according to claim 3, which is characterized in that the shutdown
Circuit includes resistance R101, resistance R102, resistance R104, voltage-stabiliser tube D101, triode Q105, metal-oxide-semiconductor Q104；The resistance
R101, resistance R102, voltage-stabiliser tube D101 are connected in series with, and the resistance R101 is connect with ground wire, the ground level of the triode Q105
Be connected on the conducting wire between resistance R101, resistance R102, the emitter and collector of the triode Q105 respectively with ground wire,
Resistance R104 connections；The grid of the metal-oxide-semiconductor Q104 is connected on the conducting wire between the triode Q105, resistance R104, institute
The drain electrode and source electrode for stating metal-oxide-semiconductor Q104 are connect with the voltage-stabiliser tube D101, the ends DATA respectively；The relay passes through 1-Wire
Data line is connected on the conducting wire between the voltage-stabiliser tube D101 and metal-oxide-semiconductor Q104.
6. a kind of trailer compartment identification device based on 1-Wire according to claim 4, which is characterized in that in the pair
One switching circuit is set in equipment, the switching circuit by 1-Wire data lines respectively with the 1-Wire cores in the secondary equipment
Piece, relay connection；The switching circuit is connect by the pilot with the relay；The switching circuit is for controlling
Relay processed switches the connection between the 1-Wire data lines, cornering lamp and cornering lamp power cord of secondary equipment.
7. a kind of trailer compartment identification device based on 1-Wire according to claim 6, which is characterized in that the switching
Circuit includes resistance R107, resistance R109, resistance R103, resistance R108, resistance R105, resistance R106, triode Q102, voltage stabilizing
Pipe D102, voltage-stabiliser tube D103, voltage-stabiliser tube D104, metal-oxide-semiconductor Q101, metal-oxide-semiconductor Q103；The resistance R107 and resistance R109 series connection connect
It connecing, the resistance R103, resistance R108, voltage-stabiliser tube D102 are connected in series with, and the resistance R107, resistance R103 are connect with ground wire,
The other end of the resistance R109 is connected on the conducting wire between resistance R108 and voltage-stabiliser tube D102；The grid of the metal-oxide-semiconductor Q101
Pole is connected on the conducting wire between R107 and resistance R109, the drain electrode of the metal-oxide-semiconductor Q101 and source electrode respectively with a RELAY_
The ends CTRL, ground wire connection；The ground level of the triode Q102 is connected on the conducting wire between the resistance R103 and resistance R108,
The emitter and collector of the triode Q102 is connect with ground wire, resistance R105 respectively；The grid of the metal-oxide-semiconductor Q103 connects
On conducting wire between resistance R105 and triode Q102, the drain electrode of the metal-oxide-semiconductor Q103 and the source electrode 1- with secondary equipment respectively
Wire chips, ground wire connection；The resistance R106 is separately connected 1-Wire chips and the ends 1-WIRE of secondary equipment；The voltage stabilizing
Pipe D103 and metal-oxide-semiconductor Q103, secondary equipment 1-Wire chips between conductor in parallel connection；The voltage-stabiliser tube D104 respectively with ground
Line, Q103 grid on conducting wire connection；The relay is connect by 1-Wire data lines with the ends 1-WIRE, it is described after
Electric appliance is connect by pilot with the ends RELAY_CTRL.
8. a kind of trailer compartment recognition methods based on 1-Wire, which is characterized in that any described using claim 6~7
Trailer compartment identification device based on 1-Wire is identified, and at least includes the following steps：
S100, when trailer is turned, the 1-Wire data lines on the main equipment are disconnected with cornering lamp power cord；
S200, when trailer is turned, the switching circuit controls the 1-Wire data lines of the switch and the secondary equipment, turning
Connection between lamp；The cornering lamp flicker；
S300, when trailer is not turned, the relay disconnects the cornering lamp power cord of cornering lamp and cornering lamp, is connected to pair and sets
On standby 1-Wire data lines；1-Wire data lines on main equipment are connect with cornering lamp power cord；The 1-Wire cores of main equipment
Piece reads the ID of the 1-Wire chips in secondary equipment；
The main equipment is internally integrated associated cars data, is sent by iic bus with the 1-Wire chips of main equipment
ID is compared, and with the ID of trailer compartment match, result is output to terminal device by the MCU by serial ports.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610860632.4A CN106347523B (en) | 2016-09-28 | 2016-09-28 | Trailer compartment identification device based on 1-Wire and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610860632.4A CN106347523B (en) | 2016-09-28 | 2016-09-28 | Trailer compartment identification device based on 1-Wire and method |
Publications (2)
| Publication Number | Publication Date |
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| CN106347523A CN106347523A (en) | 2017-01-25 |
| CN106347523B true CN106347523B (en) | 2018-08-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610860632.4A Active CN106347523B (en) | 2016-09-28 | 2016-09-28 | Trailer compartment identification device based on 1-Wire and method |
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| CN109383374B (en) * | 2018-10-23 | 2022-01-07 | 侯静阳 | Safety early warning braking system for truck |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1680762A1 (en) * | 2003-11-07 | 2006-07-19 | Slieve Mish Inventions Limited | Tracking of containers |
| US7463150B2 (en) * | 2005-10-28 | 2008-12-09 | 3M Innovative Properties Company | Vehicle identification tag and methods of verifying the validity of a vehicle identification tag |
| CN201028276Y (en) * | 2007-03-13 | 2008-02-27 | 重庆安运科技有限公司 | Gas cylinder electric identity card for vehicle using compressed natural gas based on 1-thread technology |
| CN201319196Y (en) * | 2008-12-03 | 2009-09-30 | 上海交海信息科技有限公司 | Front-body/vehicle-body/driver synchronized recognition system for container road transportation |
| CN102829826A (en) * | 2012-08-27 | 2012-12-19 | 大连理工大学 | Wireless sensor network technology based container monitoring system |
| CN104820653B (en) * | 2015-04-27 | 2017-11-21 | 无锡必创传感科技有限公司 | A kind of digital bus system and its slave unit physical location automatic identifying method |
| CN105249989B (en) * | 2015-08-31 | 2018-10-26 | 深圳市红源资产管理有限公司 | Ultrasonic probe recognition methods based on monobus communication and ultrasonic medical equipment |
| CN105654268B (en) * | 2016-04-07 | 2021-10-22 | 福建农林大学 | Visual management system and method for loading and unloading positions of logistics goods yard |
| CN206155619U (en) * | 2016-09-28 | 2017-05-10 | 上海移为通信技术股份有限公司 | Trailer bed recognition device based on 1 wire |
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