CN113752980B - Anti-dismantling equipment and monitoring system for tractor and trailer - Google Patents
Anti-dismantling equipment and monitoring system for tractor and trailer Download PDFInfo
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- CN113752980B CN113752980B CN202110923246.6A CN202110923246A CN113752980B CN 113752980 B CN113752980 B CN 113752980B CN 202110923246 A CN202110923246 A CN 202110923246A CN 113752980 B CN113752980 B CN 113752980B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R25/00—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles
- B60R25/10—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles actuating a signalling device
- B60R25/102—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles actuating a signalling device a signal being sent to a remote location, e.g. a radio signal being transmitted to a police station, a security company or the owner
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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
- B60R16/0231—Circuits relating to the driving or the functioning of the vehicle
- B60R16/0232—Circuits relating to the driving or the functioning of the vehicle for measuring vehicle parameters and indicating critical, abnormal or dangerous conditions
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R25/00—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles
- B60R25/30—Detection related to theft or to other events relevant to anti-theft systems
- B60R25/34—Detection related to theft or to other events relevant to anti-theft systems of conditions of vehicle components, e.g. of windows, door locks or gear selectors
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- Automation & Control Theory (AREA)
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Abstract
The application provides a prevent tearing open equipment and monitored control system for tractor and trailer relates to the control field. The tamper-evident device comprising: the first switch circuit, the first voltage transformation circuit and the micro control unit; the first switch circuit comprises a first input node, a first output node and a first control node; the first control node is used for receiving a conducting control signal so as to enable the first input node and the first output node to be switched off or on to form current; the second input node is electrically connected with the first output node; the micro control unit comprises a third input node and a third output port; and the third output port outputs the information of the anti-dismounting device to the vehicle-mounted monitoring terminal. According to the application, the anti-dismantling device can realize a universal anti-dismantling function.
Description
Technical Field
The application relates to the field of monitoring, in particular to a disassembly preventing device and a monitoring system for a tractor and a trailer.
Background
The trailer is as the important transport means of commodity circulation trade, compares with ordinary vehicle, and the trailer divide into tractor and trailer two parts, and tractor and trailer can separate moreover to the tractor can connect different hanging boxes.
When a trailer is illegally removed or replaced, a driver of a preceding vehicle may not be able to timely notice the change of the trailer, and thus a tractor and trailer monitoring device is required to timely detect the state of the trailer.
However, in the current market, a general trailer is not equipped with a monitoring device, and a vehicle company is required to install a vehicle-mounted monitoring terminal at a later stage. And no mature trailer detection system exists, the conventional vehicle-mounted monitoring terminal can only monitor the tractor, and when the trailer is stolen or is dropped, the alarm cannot be given in time.
In the market, the tractor and the trailer are of various types, are produced from different manufacturers, have a large number of vehicle types and manufacturers, and different vehicle types or manufacturers, the communication protocols of the electronic control units of the vehicle are different, so that the vehicle-mounted monitoring terminals cannot be adapted one by one, and the communication protocols of the electronic control units are different. Therefore, in the aftermarket, the docking of the vehicle-mounted monitoring terminal to the electronic control unit is much more complicated.
Therefore, there is a need for a reliable and simple anti-dismantle device and monitoring system for a tractor and trailer of a trailer that can detect and report trailer information in time and that can be universally applied to the trailer market.
The above information disclosed in this background section is only for enhancement of understanding of the background of the application and therefore it may contain information that does not constitute prior art that is already known to a person of ordinary skill in the art.
Disclosure of Invention
This application aims at providing a prevent tearing open equipment and monitored control system for tractor and trailer, can in time detect trailer information and report, prevents that the trailer from being demolishd or changing, generally is applicable to present trailer market.
According to an aspect of the application, there is provided a tamper evident device for a tractor and a trailer, comprising: the first switch circuit, the first voltage transformation circuit and the micro control unit; wherein:
the first switch circuit comprises a first input node, a first output node and a first control node;
the first input node is electrically connected with a power supply output terminal of the vehicle-mounted monitoring terminal;
the first control node is used for receiving a conducting control signal so as to enable the first input node and the first output node to be switched off or on to form current;
the first voltage transformation circuit comprises a second input node and a second output node;
the second input node is electrically connected with the first output node;
the micro control unit comprises a third input node and a third output port;
The third input node is electrically connected with the second output node;
and the third output port outputs the information of the anti-dismounting device to the vehicle-mounted monitoring terminal.
According to some embodiments, the first switch circuit comprises a first capacitor, a first switch tube, a third resistor, a fifth resistor, a sixth resistor, a seventh resistor, and a fifth capacitor, wherein:
the positive electrode of the first capacitor is electrically connected with the first input node, and the other end of the first capacitor is grounded;
the fifth resistor is connected between the emitter and the base of the first switch tube N1 in parallel;
one end of the sixth resistor is electrically connected with the base electrode of the first switching tube, the other end of the sixth resistor is electrically connected with one end of the fifth capacitor, and the other end of the fifth capacitor is grounded;
one end of the seventh resistor is electrically connected with the other end of the sixth resistor, and the other end of the seventh resistor is electrically connected with the first control node;
one end of the third resistor is connected with the collector of the first switch tube, and the other end of the third resistor is electrically connected with the first output node.
According to some embodiments, the first transformer circuit comprises a second capacitor, a fourth resistor and a voltage conversion chip, wherein:
one end of the second capacitor is electrically connected with the voltage conversion chip, and the other end of the second capacitor is grounded;
The fourth resistor is connected between two ports of the voltage conversion chip in parallel;
the voltage conversion chip is used for converting the voltage at the power supply output terminal into the working voltage required by the micro control unit.
According to some embodiments, the micro control unit is electrically connected with the vehicle-mounted monitoring terminal through the third output port; the second output node is electrically connected through the third input node.
According to some embodiments, the micro control unit uploads trailer data including operating status and ID information of the tamper resistant device.
According to an aspect of the application, there is provided a monitoring system for a tractor and a trailer, comprising:
the vehicle-mounted monitoring terminal is mounted on the tractor;
a tamper evident device as described above, mounted on the trailer; the first input node of the tamper resistant device is electrically connected to a power output terminal of the on-vehicle monitoring terminal, the third output port is electrically connected to the on-vehicle monitoring terminal, and the first control node is electrically connected to the trailer so as to be at a low potential.
According to some embodiments, the tamper resistant device periodically uploads data.
According to some embodiments, the data comprises an operational status and ID information of the tamper resistant device.
According to some embodiments, when the tractor is separated from the trailer, the first input node is disconnected from the third output port, the anti-dismantling device is powered off, the anti-dismantling device cannot upload data, and the vehicle-mounted monitoring terminal uploads alarm information to a central platform.
According to some embodiments, when the trailer is exchanged, the first control node is suspended, the first switch tube is turned off, the anti-dismantling device does not work and cannot upload data, and the vehicle-mounted monitoring terminal uploads alarm information to the central platform.
According to an aspect of the application, there is provided a trailer comprising: the monitoring system described above is installed.
According to the anti-dismantling device provided by the embodiment of the application, the universal anti-dismantling function can be realized, trailer information can be detected and reported in time, and the anti-dismantling device can be universally applied to the market of trailers.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
The above and other objects, features and advantages of the present application will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings. The drawings described below are for illustrative purposes only of certain embodiments of the present application and are not intended to limit the present application.
Fig. 1 shows a schematic view of a monitoring system for a tractor and a trailer according to an exemplary embodiment of the present application;
FIG. 2 illustrates a tamper evident device circuit configuration diagram for a tractor and trailer according to an exemplary embodiment of the present application;
FIG. 3 illustrates a circuit block diagram of a monitoring system for a tractor and trailer according to an exemplary embodiment of the present application;
FIG. 4 shows a flow chart of a method for tractor-trailer separation detection according to an example embodiment of the present application;
fig. 5 shows a flow chart of a method for detecting a separation of a tractor and a trailer according to a further embodiment of the present application.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals denote the same or similar parts in the drawings, and thus, a repetitive description thereof will be omitted.
The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the disclosure. One skilled in the relevant art will recognize, however, that the embodiments of the disclosure can be practiced without one or more of the specific details, or with other means, components, materials, devices, or the like. In such cases, well-known structures, methods, devices, implementations, materials, or operations will not be shown or described in detail.
The flow charts shown in the drawings are merely illustrative and do not necessarily include all of the contents and operations/steps, nor do they necessarily have to be performed in the order described. For example, some operations/steps may be decomposed, and some operations/steps may be combined or partially combined, so that the actual execution sequence may be changed according to the actual situation.
The terms "first," "second," and the like in the description and claims of the present application and in the above-described drawings are used for distinguishing between different objects and not for describing a particular order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.
It will be appreciated by those skilled in the art that the drawings are merely schematic representations of exemplary embodiments, and that the blocks or processes shown in the drawings are not necessarily required to practice the present application and are, therefore, not intended to limit the scope of the present application.
In the market, the tractor and the trailer are of various types, are produced from different manufacturers, have a large number of vehicle types and manufacturers, and different vehicle types or manufacturers, the communication protocols of the electronic control units of the vehicle are different, so that the vehicle-mounted monitoring terminals cannot be adapted one by one, and the communication protocols of the electronic control units are different. Therefore, in the aftermarket, the docking of the vehicle-mounted monitoring terminal to the electronic control unit is much more complicated. Therefore, the reliable and simple anti-dismantling device and monitoring system for the tractor and the trailer of the trailer can timely detect and report trailer information and can be universally applied to the trailer market.
Embodiments of the present application will be described below with reference to the accompanying drawings, taking as an example a towed vehicle for internet of vehicles monitoring.
Fig. 1 shows a schematic view of a monitoring system for a tractor and a trailer according to an exemplary embodiment of the present application.
Referring to fig. 1, the monitoring system includes: the vehicle-mounted monitoring terminal 103 and the anti-dismounting device 201.
As shown in fig. 1, the vehicle-mounted monitoring terminal 103 is mounted on the tractor 1011, the anti-detachment device 201 is mounted on the trailer 1013, the vehicle-mounted monitoring terminal 103 and the anti-detachment device 201 are connected by a cable 1071, the cable 1071 includes a plurality of signal lines and/or power lines, wherein a power output terminal of the vehicle-mounted monitoring terminal 103 is electrically connected with a first output terminal of the anti-detachment device 201, and a third output terminal is electrically connected with the vehicle-mounted monitoring terminal 103. The tamper-evident device 201 is fitted with a cable 1073 in which a first control terminal is electrically connected to the trailer to provide a low voltage.
According to some embodiments, a power output terminal of the vehicle-mounted monitoring terminal 103 is electrically connected to the first output terminal of the anti-detachment device 201, so that the vehicle-mounted monitoring terminal 103 supplies power to the anti-detachment device 201, and a third output terminal is electrically connected to the vehicle-mounted monitoring terminal 103, so that the anti-detachment device 201 uploads information.
According to some embodiments, a first control terminal in cable 1073 is electrically connected to the trailer for detecting whether the tamper device 201 is being exchanged.
Fig. 2 shows a configuration of a tamper evident device circuit for a tractor and a trailer according to an exemplary embodiment of the present application.
Referring to fig. 2, a tamper prevention apparatus 201 for a tractor and a trailer according to an exemplary embodiment of the present application includes: a first switch circuit 2011, a first transformer circuit 2013 and a micro control unit 2015.
As shown in fig. 2, the first switch circuit 2011 may include a first input node 2051, a first output node 2053, and a first control node 2055.
The first input node 2051 is used to connect a power supply output terminal of the in-vehicle monitoring terminal 203.
The first control node 2055 is configured to receive a turn-on control signal to turn off or turn on a current between the first input node 2051 and the first output node 2053.
As shown in fig. 2, the first transformer circuit 2013 may include a second input node 2057 and a second output node 2059.
The second input node 2057 is electrically connected to the first output node 2053.
As shown in fig. 2, the mcu 2015 may include a third input node 2061 and a third output port 2063.
The third input node 2061 is electrically connected to the second output node 2059.
The third output port 2063 outputs the tamper-proof device information to the in-vehicle monitoring terminal 203.
Referring to fig. 2, according to some embodiments, the first switch circuit 2011 includes a first capacitor C1, a first switch N1, a third resistor R3, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, and a fifth capacitor C5.
As shown in fig. 2, the first capacitor C1 has a positive terminal electrically connected to the first input node 2051 and a negative terminal connected to ground. The fifth resistor R5 is connected in parallel between the emitter and the base of the first switch tube N1. One end of the sixth resistor R6 is electrically connected to the base of the first switch tube N1, and the other end is electrically connected to the fifth capacitor C5. One end of the seventh resistor R7 is electrically connected to the sixth resistor R6, and the other end is electrically connected to the first control node 2055. The other terminal of the fifth capacitor C5 is grounded. One end of the third resistor R3 is connected to the collector of the first switch N1, and the other end is electrically connected to the first output node 2053.
The first switch transistor N1 may be a PNP type transistor, but the application is not limited thereto.
According to some embodiments, the fifth capacitor C5 may perform a filtering function to filter the jitter signal generated by poor circuit contact.
Referring to fig. 2, according to some embodiments, the first transformer circuit 2013 includes a second capacitor C2, a fourth resistor R4, and a voltage conversion chip U1.
As shown in fig. 2, the anode of the second capacitor C2 is electrically connected to the voltage converting chip U1, and the cathode is grounded. The fourth resistor R4 is connected in parallel between two ports of the voltage conversion chip U1. The voltage conversion chip U1 is electrically connected to the second input node 2057, and the voltage conversion chip U1 is electrically connected to the second output node 2059. The third resistor R3 is connected to the CE port of the voltage conversion chip U1. The fourth resistor R4 is connected in parallel between the CE port and the VSS port of the voltage converting chip U1. The VOUT port of the voltage conversion chip U1 is coupled to the second output node 2059. The VIN port of the voltage conversion chip U1 is electrically connected to the vehicle monitoring terminal 203 through a first input node 2051.
Referring to fig. 2, according to some embodiments, the micro control unit 2015 is a CPU.
As shown in fig. 2, the CPU uploads trailer data. The vehicle-mounted monitoring terminal 203 is electrically connected through the third output port 2063. The second output node 2059 is electrically connected through the third input node 2061.
According to some embodiments, the voltage conversion chip U1 may convert the power voltage into an operating voltage of the CPU, so that the CPU operates normally.
According to some embodiments, the data includes an operational status of the tamper device, ID information, and the like.
Fig. 3 shows a circuit configuration diagram of a monitoring system for a tractor and a trailer according to an exemplary embodiment of the present application.
Referring to fig. 3, a monitoring system for a tractor and a trailer according to an exemplary embodiment of the present application includes: the vehicle-mounted monitoring terminal 203 and the anti-dismounting device 201.
The circuit shown in fig. 3 is substantially the same as the circuit shown in fig. 2, except that a positive power supply 2064 and a negative power supply 2066 are added in front of the vehicle-mounted monitoring terminal 203 to supply power to the vehicle-mounted monitoring terminal 203
According to some embodiments, when the tractor is disconnected from the trailer, i.e., the on-board monitoring terminal 203 is disconnected from the anti-dismantle device 201, the cable is disconnected, i.e., the power output terminal is electrically connected to the first input terminal 2051, and the third output port 2063 is disconnected; when the tamper resistant device 201 is powered off, the tamper resistant device 201 cannot upload data through the third output port 2063; at this time, the vehicle-mounted monitoring terminal 203 uploads alarm information to the central platform.
According to some embodiments, when the trailer is exchanged, the detachment prevention device 201 is still connected to the on-board monitoring terminal 203, but the cable two is suspended, the first control terminal 2055 is suspended, the first switch tube N1 is turned off, and the voltage conversion chip U1 is turned off; the voltage conversion chip U1 can not output the converted working voltage for the CPU, the CPU does not work, the anti-dismantling device 201 can not upload data, and the vehicle-mounted monitoring terminal 203 uploads alarm information to the central platform.
Fig. 4 shows a flow chart of a method for detecting a separation of a tractor and a trailer according to an exemplary embodiment of the present application.
As shown in fig. 4, at S301, the in-vehicle monitoring terminal supplies power to the tamper resistant device.
According to some embodiments, the vehicle power supply supplies power to the vehicle-mounted monitoring terminal, the vehicle-mounted monitoring terminal supplies power to the anti-dismounting device, and the first input terminal branch is electrically connected with the first power output terminal through the first cable.
At S303, the tamper resistant device uploads the data.
According to some embodiments, the tamper resistant device uploads data every cycle.
According to some embodiments, the data includes information such as the operational status and ID number of the tamper resistant device.
According to some embodiments, each of the vehicle-mounted monitoring terminal and the anti-dismounting device writes a unique ID number.
According to an example embodiment, if the tamper resistant device uploads data every cycle, go to S305; if the tamper resistant device does not upload data, go to S307.
In S305, the vehicle-mounted monitoring terminal reports vehicle information.
According to an example embodiment, if the anti-disassembly device uploads data, the vehicle-mounted monitoring terminal reports vehicle information periodically.
According to some embodiments, the period of reporting the vehicle information by the vehicle-mounted monitoring terminal can be set by itself.
And S307, separating the trailer, and reporting alarm information by the vehicle-mounted monitoring terminal.
According to the embodiment, if the anti-dismantling device does not upload data, the trailer is separated, and the vehicle-mounted monitoring terminal reports alarm information to the central platform.
According to some embodiments, when the tractor is separated from the trailer, namely the vehicle-mounted monitoring terminal is separated from the anti-dismounting device, the cable is disconnected, namely the power supply output terminal is disconnected when being electrically connected with the first input terminal, and the third output terminal is disconnected; the anti-dismantling device is powered off, and the anti-dismantling device cannot upload data through the third output port; at the moment, the vehicle-mounted monitoring terminal uploads alarm information to the central platform.
Fig. 5 shows a flow chart of a method for detecting a separation of a tractor and a trailer according to a further embodiment of the present application.
As shown in fig. 5, in S401, the in-vehicle monitoring terminal supplies power to the tamper resistant device.
According to some embodiments, the vehicle power supply supplies power to the vehicle-mounted monitoring terminal, and the vehicle-mounted monitoring terminal supplies power to the anti-dismounting device, and the first input terminal branch is electrically connected through a first cable, namely a power output terminal.
At S403, the tamper resistant device uploads the data.
According to some embodiments, the tamper resistant device uploads data every cycle.
According to some embodiments, the data includes information such as the operational status and ID number of the tamper resistant device.
According to some embodiments, each of the in-vehicle monitoring terminal and the anti-dismounting device writes a unique ID number.
According to an example embodiment, if the tamper resistant device uploads data every cycle, go to S405; if the tamper resistant device does not upload data, go to S407.
In S405, the vehicle-mounted monitoring terminal reports the vehicle information.
According to an example embodiment, if the anti-disassembly device uploads data, the vehicle-mounted monitoring terminal reports vehicle information periodically.
According to some embodiments, the period of reporting the vehicle information by the vehicle-mounted monitoring terminal can be set by itself.
In S407, the trailer is exchanged, and the vehicle-mounted monitoring terminal reports alarm information.
According to the embodiment, if the anti-dismantling device does not upload data, the trailer is replaced, and the vehicle-mounted monitoring terminal reports alarm information to the central platform.
According to some embodiments, when the trailer is exchanged, the detachment prevention device is still connected with the vehicle-mounted monitoring terminal, but the cable II is suspended, the first control terminal is suspended, the first switch tube N1 is turned off, and the voltage conversion chip U1 is turned off; the voltage conversion chip U1 can't give CPU output conversion back operating voltage, and CPU is out of work, and it is out of work to prevent tearing open equipment, prevents tearing open the unable data of uploading of equipment, and on-vehicle monitor terminal uploads alarm information to central platform.
The monitoring system for the tractor and the trailer can be applied to the trailer, and can be applied to a trailer vehicle which can be separated into the tractor and the trailer in actual use.
According to the embodiment of the application, when the trailer is used, if the trailer is illegally separated, the anti-dismantling equipment cannot upload information, and then the anti-dismantling alarm of the vehicle-mounted monitoring terminal can be triggered, so that a driver can quickly master the condition of the trailer and pay attention to the fact that the trailer is illegally separated at the first time.
According to this application embodiment, in the trailer use, if the trailer is changed, then can make the putting of preventing tearing open equipment tear open the line unsettled, make prevent tearing open the unable upload information of equipment, then can trigger on-vehicle monitoring terminal prevents tearing open the warning, make the driver can master the trailer condition fast, pay close attention to the trailer at the very first time and be changed.
It should be clearly understood that this application describes how to make and use particular examples, but the application is not limited to any details of these examples. Rather, these principles can be applied to many other embodiments based on the teachings of the present disclosure.
Furthermore, it should be noted that the above-mentioned figures are only schematic illustrations of the processes involved in the method according to exemplary embodiments of the present application, and are not intended to be limiting. It will be readily understood that the processes shown in the above figures are not intended to indicate or limit the chronological order of the processes. In addition, it is also readily understood that these processes may be performed synchronously or asynchronously, e.g., in multiple modules.
Exemplary embodiments of the present application are specifically illustrated and described above. It is to be understood that the application is not limited to the details of construction, arrangement, or method of implementation described herein; on the contrary, the intention is to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.
Claims (10)
1. A tamper evident device for tractors and trailers, comprising: the first switch circuit, the first voltage transformation circuit and the micro control unit; wherein:
the first switch circuit comprises a first input node, a first output node and a first control node;
the first input node is electrically connected with a power supply output terminal of the vehicle-mounted monitoring terminal;
the first control node is used for receiving a conducting control signal so as to enable the first input node and the first output node to be switched off or on to form current;
the first voltage transformation circuit comprises a second input node and a second output node;
the second input node is electrically connected with the first output node;
the micro control unit comprises a third input node and a third output port;
the third input node is electrically connected with the second output node;
the third output port outputs the anti-dismounting device information to the vehicle-mounted monitoring terminal;
The micro control unit is electrically connected with the vehicle-mounted monitoring terminal through the third output port, and is electrically connected with the second output node through the third input node.
2. The tamper-resistant device of claim 1, wherein the first switching circuit comprises a first capacitor, a first switching tube, a third resistor, a fifth resistor, a sixth resistor, a seventh resistor, and a fifth capacitor, wherein:
one end of the first capacitor is electrically connected with the first input node, and the other end of the first capacitor is grounded;
the fifth resistor is connected between the emitter and the base of the first switch tube N1 in parallel;
one end of the sixth resistor is electrically connected with the base electrode of the first switching tube, the other end of the sixth resistor is electrically connected with one end of the fifth capacitor, and the other end of the fifth capacitor is grounded;
one end of the seventh resistor is electrically connected with the other end of the sixth resistor, and the other end of the seventh resistor is electrically connected with the first control node;
one end of the third resistor is connected with the collector of the first switch tube, and the other end of the third resistor is electrically connected with the first output node.
3. The tamper-resistant apparatus according to claim 1, wherein the first transforming circuit comprises a second capacitor, a fourth resistor and a voltage converting chip, wherein:
One end of the second capacitor is electrically connected with the voltage conversion chip, and the other end of the second capacitor is grounded;
the fourth resistor is connected between two ports of the voltage conversion chip in parallel;
the voltage conversion chip is used for converting the voltage at the power supply output terminal into the working voltage required by the micro control unit.
4. The tamper evident device of claim 1, wherein:
and the micro control unit uploads trailer data, wherein the data comprises the working state and the ID information of the anti-dismantling device.
5. A monitoring system for a tractor and a trailer, comprising:
the vehicle-mounted monitoring terminal is mounted on the tractor;
the tamper evident device as claimed in any one of claims 1 to 4, mounted on a trailer; the first input node of the tamper resistant device is electrically connected to a power output terminal of the on-vehicle monitoring terminal, the third output port is electrically connected to the on-vehicle monitoring terminal, and the first control node is electrically connected to the trailer so as to be at a low potential.
6. The monitoring system of claim 5, wherein:
and periodically uploading data by the anti-dismantling equipment.
7. The monitoring system of claim 6, wherein:
The data comprises the working state and the ID information of the anti-dismounting device.
8. The monitoring system of claim 5, wherein:
when the tractor with when the trailer separates, first input node and third output port department disconnection, prevent tearing open the outage of equipment, prevent tearing open the unable data of uploading of equipment, on-vehicle monitor terminal uploads alarm information to central platform.
9. The monitoring system of claim 5, wherein:
when the trailer is changed, the first control node is suspended, the first switch tube is turned off, the anti-dismantling device does not work and cannot upload data, and the vehicle-mounted monitoring terminal uploads alarm information to the central platform.
10. A towed vehicle, comprising:
a monitoring system according to any one of claims 5-9.
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| CN202110923246.6A CN113752980B (en) | 2021-08-12 | 2021-08-12 | Anti-dismantling equipment and monitoring system for tractor and trailer |
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| CN202110923246.6A CN113752980B (en) | 2021-08-12 | 2021-08-12 | Anti-dismantling equipment and monitoring system for tractor and trailer |
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| CN113752980B true CN113752980B (en) | 2022-07-29 |
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| CN202783091U (en) * | 2012-09-28 | 2013-03-13 | 深圳市赛格导航科技股份有限公司 | Anti-dismantle system of engineering vehicle global position system (GPS) terminal |
| CN103197351B (en) * | 2013-04-01 | 2015-04-22 | 吴建堂 | Human body approaching automatic control device |
| CN108275117A (en) * | 2018-03-22 | 2018-07-13 | 许湘 | Anti- dismounting vehicle positioning system |
| CN209351361U (en) * | 2018-11-15 | 2019-09-06 | 深圳市锐明技术股份有限公司 | A kind of tamper detection system based on vehicle-mounted monitoring equipment |
| CN109789847B (en) * | 2018-11-15 | 2021-09-17 | 深圳市锐明技术股份有限公司 | Anti-dismantling detection system based on vehicle-mounted monitoring equipment |
| JP2020087834A (en) * | 2018-11-29 | 2020-06-04 | Ntn株式会社 | Control apparatus |
| US10673342B1 (en) * | 2019-05-02 | 2020-06-02 | Silanna Asia Pte Ltd | Active clamping with bootstrap circuit |
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2021
- 2021-08-12 CN CN202110923246.6A patent/CN113752980B/en active Active
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