CN110501584A - It is a kind of for monitor trailer power supply integrality observation circuit and monitoring device - Google Patents
It is a kind of for monitor trailer power supply integrality observation circuit and monitoring device Download PDFInfo
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- CN110501584A CN110501584A CN201910434889.7A CN201910434889A CN110501584A CN 110501584 A CN110501584 A CN 110501584A CN 201910434889 A CN201910434889 A CN 201910434889A CN 110501584 A CN110501584 A CN 110501584A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/005—Testing of electric installations on transport means
- G01R31/006—Testing of electric installations on transport means on road vehicles, e.g. automobiles or trucks
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Abstract
It is a kind of for monitor trailer power supply integrality observation circuit and monitoring device, be related to vehicle monitoring field, including be used to monitor pulling equipment input voltage or input current or the simultaneously sension unit of monitoring input voltage, input current；Connection sension unit simultaneously determines the monitoring unit whether input voltage and input current work normally；It connects monitoring unit and carries out the state indication unit of early warning according to the situation of monitoring unit monitoring；Power supply is extracted from pulling equipment or the power supply unit that power supply is monitoring unit, state indication unit power supply is extracted from other external power supplies.Compared with prior art, the application can preferably monitor the electricity system of trailer especially lighting system in real time.The application can no matter trailer electricity shortage caused by which kind of situation when, timely notify driver, and which electrical equipment can be accurately fed back.
Description
Technical field
The present invention relates to the monitorings of the electricity system of vehicle monitoring field more particularly to trailer.
Background technique
Trailer is unpowered vehicle, needs to be drawn in truck, tractor or other vehicle backs.Trailer itself includes
Parking light, turn signal, brake lamp, exterior lighting, interior lighting and other electronic electric equipments, these equipment need trailer
The transmission for carrying out signal and power supply with one or more electronic cable between tractor, then by tractor come effectively
The equipment in trailer is controlled.
Due to the independence of tractor and trailer, electronic cable and electronics connector are exposed to outside, and trailer is commercial vehicle
, it needs to carry out long-distance running, violent environmental change will be undergone in the possible short time, therefore electronic cable and electronics connect
The burn into aging of connector is to annoying the major issue of trailer industry all the time.The reason of burn into aging usually by salt, remove
Ice agent etc. these using chemicals on road perhaps in atmosphere, the water on road and moisture or severe traveling ring
Border or strong ultraviolet light etc. cause.These factors can allow the protective layer of electronic cable and electronics connector to fail, in turn
Allowing metal in cable or in electronics connector to generate chemical reaction causes to corrode or get rusty.Metal rust or corrosion
One layer of obstacle can be generated on conductor or corrosion is walked to a part of conductive surface, to cause poor contact and conduction not
It is good.These corrode and get rusty will lead to lead to trailer power supply it is unstable or insufficient, it is complete that the worst situation will lead to trailer
Lose power supply；It may also lead to the distorted signals for leading to trailer simultaneously or lose completely.When this occurs, tractor
Driver cannot timely have found the variation of electronic system on trailer, because they can not directly be immediately seen in cockpit
External multiple electronic connection systems.Existing monitoring system can only use in the case where parking, and cannot be expert at and cross
Prompting is made in journey.
Summary of the invention
The present invention aiming at the shortcomings in the prior art, provides a kind of for monitoring the observation circuit of trailer power supply integrality
And monitoring device, the application pass through electric current, the voltage of each conducting wire in measurement power cable, can obtain after comparison threshold value opposite
Whether the electrical equipment answered is normal.
In order to solve the above-mentioned technical problem, the present invention is addressed by following technical proposals: one kind is for monitoring trailer
The observation circuit for integrality of powering, comprising: input electricity for monitoring pulling equipment input voltage or input current or monitoring simultaneously
Pressure, the sension unit of input current；Connection sension unit simultaneously determines the monitoring whether input voltage and input current work normally
Unit；It connects monitoring unit and carries out the state indication unit of early warning according to the situation of monitoring unit monitoring；It is mentioned from pulling equipment
It takes power supply or extracts the power supply unit that power supply is monitoring unit, state indication unit power supply from other external power supplies.
The sension unit includes at least one sensor, the corresponding one or more electrical equipments of the sensor,
The sensor inputs the one or more input voltages measured or one or more input currents or one or more
Voltage and input current to the monitoring unit carry out data processing.
In above-mentioned technical proposal, it is preferred that the sensor includes voltage sensor group, the voltage sensor group packet
Divider A is included, divider A is capable of providing appropriate voltage work normally monitoring unit.The sensor includes that electric current passes
Sense group, the current sense group include non-contact type current sensing group and contact current sense group.
In above-mentioned technical proposal, it is preferred that the contact current sense group includes contact current sensor and partial pressure
Device B, contact current sensor include sensing resistor and difference amplifier, the output of current sensor after divider B,
Divider B is capable of providing appropriate electric current work normally monitoring unit.
In above-mentioned technical proposal, it is preferred that the sensor includes voltage sensor group and contact current sense group,
The voltage sensor group includes divider A, and divider A is capable of providing appropriate voltage work normally monitoring unit；It is described
Contact current sense group includes contact current sensor and divider B, contact current sensor include sensing resistor and
Difference amplifier, after divider B, divider B is capable of providing appropriate electric current to make monitoring unit for the output of current sensor
It works normally.
In above-mentioned technical proposal, it is preferred that the voltage sensor group is located at sension unit input terminal and the contact
Between current sense group or between the contact current sense group and the sension unit output end.
In above-mentioned technical proposal, it is preferred that further include a self-resetting fuse in the sensor.
The monitoring unit is the microprocessor of a codified, and microprocessor records each electricity consumption on trailer
Electric current, the voltage threshold of equipment, when threshold value of the current or voltage value of electrical equipment lower than monitoring unit record, then state
Indicating unit early warning.
In above-mentioned technical proposal, it is preferred that the threshold value recorded in the microprocessor has static schema and dynamic analog
Formula, when static schema, threshold value is the numerical value that user inputs before enabling, and after enabling, this numerical value is constant；When dynamic mode,
On the basis of threshold value is Current Voltage when being opened after enabling by electrical equipment, average value after running a period of time or is lower than
The numerical value of average value.
In above-mentioned technical proposal, it is preferred that the microprocessor can record multiple and different for each electrical equipment
Voltage, current threshold, and enable different threshold values automatically according to different environment.
In above-mentioned technical proposal, it is preferred that the ambient condition that the microprocessor can automatically select includes but not limited to:
The state that Current Voltage is mutated when engine start, the state of Current Voltage mutation when electrical equipment is enabled or closed on trailer,
Tractor electronic system sends the state that electric signal causes Current Voltage to fluctuate to trailer in driving process.
Said supply unit includes adjuster, no matter extracts power supply from pulling equipment or extracts electricity from other external power supplies
Source all passes through the adjuster, and input voltage is depressured to after adjustment voltage and powers to monitoring unit by the adjuster.
In above-mentioned technical proposal, it is preferred that when extracting power supply from pulling equipment, adjuster and pulling equipment conducting wire are direct
There was only voltage under diode action when there is more than one pulling equipment conducting wire that can power to adjuster with diode
Highest that can power to adjuster.
The state indication unit includes built-in instruction system and external instruction system, the built-in instruction system
System can be integrated in tractor control loop, and the external instruction system includes that several are corresponding with electrical equipment respectively
Warning lamp, when monitoring unit monitors electrical equipment failure, corresponding warning lamp can light, flashes or change colour.
In above-mentioned technical proposal, it is preferred that the external instruction system can be placed in tractor cab or put
It sets and is checked by driver by rearview mirror in trailer two sides.
In above-mentioned technical proposal, it is preferred that further include that control sension unit, monitoring unit and state indication unit are opened
The switch of closing.
This observation circuit can integrate in the control loop of pulling equipment.
It is a kind of for monitor trailer power supply integrality monitoring device, comprising: for monitor pulling equipment input voltage or
The sension unit of input current or simultaneously monitoring input voltage, input current, connect sension unit and determine input voltage with it is defeated
Enter the monitoring unit whether electric current works normally, connect monitoring unit and carries out the shape of early warning according to the situation of monitoring unit monitoring
State indicating unit, extracting power supply from pulling equipment or extracting power supply from other external power supplies is monitoring unit, state instruction list
The power supply unit of member power supply；Storage has the box body of sension unit, monitoring unit and power supply unit；For connecting tractor and extension
The split conductor power cable of vehicle, sension unit and power supply unit are connect with split conductor power cable.
In above-mentioned technical proposal, it is preferred that further include the cable of connection status indicating unit.
In above-mentioned technical proposal, it is preferred that be also integrated with power cable.
The application is the circuit arrangement and device that a kind of pair of power cable between tractor and trailer is monitored.Tractor
Upper includes parking light, turn signal, brake lamp, exterior lighting and interior lighting etc., these electrical equipments need tractor to pass through confession
Electric wire cable is powered, and power cable is made of several conducting wires, and when power supply, these equipment can all have metastable electricity
Stream and voltage, the application be then individually conducting wire each in power cable is monitored, once discovery voltage or electric current is different
Often, it can alert.Since power cable has standard, the conducting wire in power cable is all corresponding with electrical equipment on trailer, therefore
Can very easily find out is which equipment breaks down.
The circuit arrangement of the application mainly includes sension unit, monitoring unit, state indication unit and power supply unit.Sense
Know that unit includes several sensors, each sensor is connected with a conducting wire, or with same group of electrical equipment mostly with
Conducting wire is connected, for example there are two conducting wires for two parking light tools, then can monitor the two conducting wires by a sensor colleague, because
They are to work at the same time, and are worked simultaneously.The internal circuit of each sensor can be different, allow to obtain and survey voltage, survey
The ability that electric current or both all has.The data measured are sent to monitoring unit by sensor, and monitoring unit is the miniature of codified
Processor can preset electric current, voltage threshold that each electrical equipment works normally in microprocessor, once using
In, below or above the range of threshold value, then show the failure of electrical equipment.The determination of microprocessor threshold value can be by artificial
It presets, or assesses acquisition automatically when electrical equipment works normally by microprocessor.State indication unit receives prison
Survey unit feedback as a result, state indication unit is generally warning lamp, once receiving fault message, warning lamp can be alerted.
Warning lamp can be placed in driver's cabin or be placed on vehicle lateral margin, and when being placed on vehicle lateral margin, driver can be from anti-
See in light microscopic.More preferably, if tractor has additional an interface and communications protocol, monitoring unit can directly and tractor
Driving system communication, allows fault message directly to react on tractor instrument board.Power supply unit includes adjuster, either from
Power cable between tractor and trailer takes electricity, or by additional storage battery power supply, it is logical need by after adjuster to prison
Survey unit power supply.
It is a kind of for monitor trailer power supply integrality monitoring device, be integrated with observation circuit, can be separately as monitoring
Device also can integrate power cable as power supply, monitoring integration device.When as power supply, monitoring integration device, put
It sets between traction device and trailer.When as individual monitoring device, it can integrate in traction device or in trailer,
Or be independently arranged, it needs when use to connect with power cable.
The observation circuit of the application can also be integrated in the control loop of pulling equipment, be not necessarily to extras, can be with confession
Electrical cables are directly connected to, and the information of feedback is reflected directly on instrument board.
Compared with prior art, the beneficial effects of the present invention are: the application can be preferably outstanding to the electricity system of trailer
It is that lighting system is monitored in real time.The application can no matter trailer electricity shortage caused by which kind of situation when, timely
It notifies driver, and which electrical equipment can be accurately fed back.Moreover, the application still when vehicle travels into
Row prompt solves the problems, such as that trailer electrical equipment situation could be monitored when only stopping in the prior art.
Detailed description of the invention
Fig. 1 is the bright observation circuit schematic diagram of this law.
Fig. 2 is the bright sension unit of this law and monitoring unit operation schematic diagram.
Fig. 3 is the bright sension unit inner sensor internal circuit schematic diagram of this law.
Fig. 4 is power-supply circuit schematic diagram inside the bright power supply unit of this law.
Specific embodiment
Present invention is further described in detail with attached drawing With reference to embodiment.
Embodiment 1: as shown in Figures 1 to 4, a kind of for monitoring the observation circuit of trailer power supply integrality, comprising: to use
To monitor pulling equipment input voltage or input current or the simultaneously sension unit of monitoring input voltage, input current；Connection sense
Know unit and determines the monitoring unit whether input voltage and input current work normally；Connect monitoring unit and according to monitoring
The situation of unit monitoring carries out the state indication unit of early warning；Power supply is extracted from pulling equipment or is extracted from other external power supplies
Power supply is the power supply unit of monitoring unit, state indication unit power supply.
Contain several electrical equipments in the electronic system of trailer, for example, parking light, turn signal, urgent parking light,
Exterior lighting lamp, interior light, abs, electric tail-gate and its external equipment outside trailer.It conventionally says, pulling equipment and extension
Electronics connection between vehicle is established by bundle conductor and service cable.Each conducting wire of the inside is all carried out with the color of oneself
Label, and be powered for different electrical equipments (such as lamps and lanterns).The following color for listing some conducting wires and color pair
The electrical equipment answered: red-brake lamp/parking light, one photographic lamp of black, one clearance lamps of brown, a blue auxiliary circuit (example
Such as tail-gate), a green left steering lamp, one right turn lamp of yellow.
The sension unit includes at least one sensor, the corresponding one or more electrical equipments of the sensor,
Both a sensor connected a conducting wire, and a conducting wire can correspond to multiple equipment.The sensor is by measure one
Or multiple input voltages or one or more input current or one or more input voltages and input current are to the monitoring
Unit carries out data processing.The circuit of each of sension unit sensor may be the same or different, this is can be with
It is adjusted according to corresponding external equipment.When their differences, they will obtain different functions.
A kind of situation: the sensor includes voltage sensor group, and the voltage sensor group includes divider A, sensing
Device has used a divider A to perceive the input voltage of electrical equipment.When providing power supply for electrical equipment, traction
Equipment can provide such as 8 volts to 16 volts of voltage, this is possible to not be inconsistent with the input specification of monitoring unit.Pass through choosing
Voltage can suitably be weakened work normally monitoring unit by selecting suitable divider A.Sensor can measure voltage at this time.
Another situation: the sensor includes current sense group, and the current sense group includes contactless electricity
Spread sense group and contact current sense group.The contact current sense group includes contact current sensor and divider
B, contact current sensor include sensing resistor and difference amplifier, and a difference amplifier can be used to survey in sensor
Measure the decompression occurred in sensing resistor two sides.The output of difference amplifier can be suitably attenuated to a conjunction by divider B
Suitable levels of current works normally monitoring unit.Sensor can measure electric current at this time.
Another situation: the sensor includes voltage sensor group and contact current sense group, and the voltage passes
Sense group includes divider A, and divider A is capable of providing appropriate voltage work normally monitoring unit；The contact electric current passes
Sense group includes contact current sensor and divider B, and contact current sensor includes sensing resistor and difference amplifier,
After divider B, divider B is capable of providing appropriate electric current work normally monitoring unit for the output of current sensor.Institute
The voltage sensor group stated is located between sension unit input terminal and the contact current sense group or the contact electric current passes
Between sense group and the sension unit output end.Sensor can measure electric current and voltage at this time.
It further include a self-resetting fuse in the sensor.Fuse can cut off electric current in due course to be occurred
External equipment is protected in the case where current overload.This fuse can gather for any suitable directly proportional to temperature
Condensation material can reach high resistance when there is current overload, and conductive state is restored to after electric current dissection.
The monitoring unit is the microprocessor of a codified, and microprocessor records each electricity consumption on trailer
Electric current, the voltage threshold of equipment, when threshold value of the current or voltage value of electrical equipment lower than monitoring unit record, then state
Indicating unit early warning.
The threshold value recorded in the microprocessor has static schema and a dynamic mode, when static schema, threshold value be for
The numerical value that user inputs before enabling, after enabling, this numerical value is constant；When dynamic mode, threshold value is to be set after enabling with electricity consumption
Average value or sub-average numerical value on the basis of Current Voltage when standby opening, after running a period of time.It is described miniature
Processor can record multiple and different voltage, current threshold for each electrical equipment, and be opened automatically according to different environment
With different threshold values.The ambient condition that the microprocessor can automatically select includes but not limited to: electric current when engine start
The state of voltage jump, the state of Current Voltage mutation when electrical equipment is enabled or closed on trailer, tractor in driving process
Electronic system sends the state that electric signal causes Current Voltage to fluctuate to trailer.
Tractor electronic system sends the state that electric signal causes Current Voltage to fluctuate to trailer in driving process: traction dress
The electronic system set may be linked up (such as ABS system) with the equipment of external connection, such as by defeated to external equipment
The signal of a variation is sent, this signal is possible to that a series of fluctuation can be misread as.This communication modes are electromagnetic wave type
's.Monitoring unit can detecte the fluctuation of these signals and ignore current current indication until this fluctuation is no longer
Only.
The state of Current Voltage mutation when electrical equipment is enabled or closed on trailer: when electrical equipment (turn signal or brake
Car light) when be opened, the lamps and lanterns of this extra work can extract electric current from circuit and the case where electric current decline occur,
This situation may result in warning lamp and light (damage of prompt lamps and lanterns).Monitoring unit can be programmed to can recorde multiple electricity
Stream, voltage threshold, and threshold value is updated under different operating environments.When there is current reduction, monitoring unit meeting
According to electrical equipment currently in use to determine whether there is the case where external equipment failure really.Monitoring unit is defeated by monitoring
The voltage entered is operating to judge some electrical equipment, for example, if the voltage perceived is lower than a certain threshold value,
Monitoring unit may determine that this external equipment is in the state closed and neglects the monitoring to its electric current.The threshold value of voltage
It can be set to a suitable numerical value (such as half of maximum input voltage) lower than under operating status.For example, when
Monitoring unit by a 5V power source when, threshold value is set as 2.5V-3V.
The state that Current Voltage is mutated when engine start: monitoring unit can be arranged to take into account unstable when there is power supply
The calculating of timing, such as engine start.When these situations occur, the low current reading of appearance is neglected.For example,
When the engine starts, traction device electronic system (such as tractor battery) may drop to 10.9 volts from 12.8 volts
It is special.Monitoring unit detects the variation that corresponding input voltage occurs, and can ignore current current indication until passing through one section
The threshold values of voltage is restored to after time.
Said supply unit includes adjuster, no matter extracts power supply from pulling equipment or extracts electricity from other external power supplies
Source all passes through the adjuster, and input voltage is depressured to after adjustment voltage and powers to monitoring unit by the adjuster.From traction
When equipment extracts power supply, there is diode, when there is more than one pulling equipment conducting wire between adjuster and pulling equipment conducting wire
When can power to adjuster, only have highest that of voltage that can power to adjuster under diode action.It is common, to
Power supply is extracted from blue conducting wire (ancillary equipment conducting wire) or brown wire (clearance lamps) when pulling equipment extracts power supply.
The state indication unit includes built-in instruction system and external instruction system, the built-in instruction system
System can be integrated in tractor control loop.If detection circuit is integrated in electronic system or the control loop of traction equipment,
Built-in instruction system can be used, both by this system integration in the instrument board of traction equipment.Certainly, if detection circuit
It works independently, if traction equipment has corresponding communication interface, also can be used built-in instruction system, when application needs
Additional conducting wire connection traction equipment and monitoring unit.
The external instruction system includes several warning lamps corresponding with electrical equipment respectively, works as monitoring unit
When monitoring electrical equipment failure, corresponding warning lamp can light, flashes or change colour.Monitoring unit can be written as energy
Issue different fault alarm signals enough to distinguish different situations.For example, the first distinguishes that method for distinguishing can be at a slow speed
Flashing, this flashing are to have detected that desultory signal cutout occurs.Second of discriminating conduct can be fast blink or
Person's warning lamp is always on, and this flashing being fully disconnected for electronic cable or external equipment.In some cases, external
Formula instruction system may include the warning lamp an of multiple color or a display screen (such as the display that comes back) is come to operator
The prompt of (such as driver) visually and acoustically.After receiving this prompt, the operator of automobile, which can choose, not to be made
With trailer, this trailer then can be sent into inspection or maintenance.The external instruction system can be placed in tractor and drive
It sails interior or is placed on trailer two sides and checked by driver by rearview mirror.
A button or switch can be used to start or close observation circuit.In this case, pulling equipment
Driver can select to start this device before journey or after journey to check the operating statuses of lamps and lanterns.
It is a kind of for monitor trailer power supply integrality monitoring device, comprising: for monitor pulling equipment input voltage or
The sension unit of input current or simultaneously monitoring input voltage, input current, connect sension unit and determine input voltage with it is defeated
Enter the monitoring unit whether electric current works normally, connect monitoring unit and carries out the shape of early warning according to the situation of monitoring unit monitoring
State indicating unit, extracting power supply from pulling equipment or extracting power supply from other external power supplies is monitoring unit, state instruction list
The power supply unit of member power supply；Storage has the box body of sension unit, monitoring unit and power supply unit；For connection plug and insert
Seat.It further include the cable of connection status indicating unit, state indication unit is connect by cable with the intracorporal monitoring unit of box.
It is also integrated with power cable.Monitoring device is mainly divided to two kinds, it is a kind of for only include observation circuit and observation circuit and power supply
What cable integrated.When as power supply, monitoring integration device, it is placed between traction device and trailer.As individual monitoring
When device, it can integrate in traction device in perhaps trailer or be independently arranged, when use needs to connect with power cable.
Claims (10)
1. it is a kind of for monitoring the observation circuit of trailer power supply integrality, it is characterized in that, comprising:
For monitoring pulling equipment input voltage or input current or the simultaneously sension unit of monitoring input voltage, input current；
Connection sension unit simultaneously determines the monitoring unit whether input voltage and input current work normally；
It connects monitoring unit and carries out the state indication unit of early warning according to the situation of monitoring unit monitoring；
Extracting power supply from pulling equipment or extracting power supply from other external power supplies is monitoring unit, state indication unit power supply
Power supply unit.
2. it is according to claim 1 a kind of for monitoring the observation circuit of trailer power supply integrality, it is characterized in that, it is described
Sension unit includes at least one sensor, and the corresponding one or more electrical equipments of the sensor, the sensor will
The one or more input voltages or one or more input currents that measure or one or more input voltages and input current
Data processing is carried out to the monitoring unit.
3. it is according to claim 1 a kind of for monitoring the observation circuit of trailer power supply integrality, it is characterized in that, it is described
Monitoring unit is the microprocessor of a codified, and microprocessor records electric current, the electricity of each electrical equipment on trailer
Threshold value is pressed, when threshold value of the current or voltage value of electrical equipment lower than monitoring unit record, then state indication unit early warning.
4. it is according to claim 1 a kind of for monitoring the observation circuit of trailer power supply integrality, it is characterized in that, the confession
Electric unit includes adjuster, no matter extracts power supply from pulling equipment or extraction power supply all passes through the tune from other external power supplies
Device is saved, input voltage is depressured to after adjustment voltage and powers to monitoring unit by the adjuster.
5. it is according to claim 1 a kind of for monitoring the observation circuit of trailer power supply integrality, it is characterized in that, the shape
State indicating unit includes built-in instruction system and external instruction system, and the built-in instruction system can be integrated in traction
In vehicle control loop, the external instruction system includes several warning lamps corresponding with electrical equipment respectively, works as prison
When survey unit monitors electrical equipment failure, corresponding warning lamp can light, flashes or change colour.
6. it is according to claim 1 a kind of for monitoring the observation circuit of trailer power supply integrality, it is characterized in that, further include
Control the switch of sension unit, monitoring unit and state indication unit open and close.
7. it is according to claim 1 a kind of for monitoring the observation circuit of trailer power supply integrality, it is characterized in that, this monitoring
Circuit can integrate in the control loop of pulling equipment.
8. it is a kind of for monitoring the monitoring device of trailer power supply integrality, it is characterized in that, comprising:
For monitoring pulling equipment input voltage or input current or the simultaneously sension unit of monitoring input voltage, input current,
Connection sension unit simultaneously determines the monitoring unit whether input voltage and input current work normally,
It connects monitoring unit and carries out the state indication unit of early warning according to the situation of monitoring unit monitoring,
Extracting power supply from pulling equipment or extracting power supply from other external power supplies is monitoring unit, state indication unit power supply
Power supply unit；
Storage has the box body of sension unit, monitoring unit and power supply unit；
Plug and socket for connection.
9. it is according to claim 8 a kind of for monitoring the monitoring device of trailer power supply integrality, it is characterized in that, further include
The cable of connection status indicating unit, state indication unit are connect by cable with the intracorporal monitoring unit of box.
10. it is according to claim 8 a kind of for monitoring the monitoring device of trailer power supply integrality, it is characterized in that, also collect
At there is power cable.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910434889.7A CN110501584A (en) | 2019-05-23 | 2019-05-23 | It is a kind of for monitor trailer power supply integrality observation circuit and monitoring device |
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| CN201910434889.7A CN110501584A (en) | 2019-05-23 | 2019-05-23 | It is a kind of for monitor trailer power supply integrality observation circuit and monitoring device |
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Cited By (5)
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| CN111163153A (en) * | 2019-12-26 | 2020-05-15 | 北京昊鹏智能技术有限公司 | Monitoring system and control method |
| CN111257674A (en) * | 2020-02-20 | 2020-06-09 | 浙江禾川科技股份有限公司 | Test system of converter |
| CN111361520A (en) * | 2020-04-13 | 2020-07-03 | 河南豫新众宝车辆有限公司 | Trailer electrical system |
| CN111901904A (en) * | 2020-08-05 | 2020-11-06 | 大陆汽车电子(长春)有限公司 | Defrosting control method for heatable glass |
| CN113162397A (en) * | 2021-04-08 | 2021-07-23 | 上海七十迈数字科技有限公司 | Step-down wire |
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| CN111257674A (en) * | 2020-02-20 | 2020-06-09 | 浙江禾川科技股份有限公司 | Test system of converter |
| CN111361520A (en) * | 2020-04-13 | 2020-07-03 | 河南豫新众宝车辆有限公司 | Trailer electrical system |
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Application publication date: 20191126 |