阅读说明：本技术 一种挂车防盗系统及防盗方法 (Trailer anti-theft system and anti-theft method ) 是由 陈亮 池华 金维丹 林晨妮 于 2020-07-23 设计创作，主要内容包括：本发明提供了一种挂车防盗系统,包括：多个弹簧制动气室,所述弹簧制动气室位于挂车车轴上,且每一所述弹簧制动气室都与挂车的一车轮以及气囊对应；挂车电子制动系统,该挂车电子制动系统通过电磁阀与每一所述弹簧制动气室连接,并控制每一所述弹簧制动气室的排气和进气,其中,所述电磁阀通过限压阀与气源连接,所述挂车电子制动系统向所述电磁阀发送指令,控制所述电磁阀实现所述气源与所述弹簧制动气室之间的气体流动,以使得所述车轮实现锁止或者解锁,其可以取代现有技术中挂车和牵引车适配以及挂车防盗适配中所采用的仅具有单一物理结构的机械锁止防盗器,引用适配牵引车和挂车的识别码以加密或者解锁挂车电子制动系统。(The invention provides a trailer anti-theft system, comprising: the spring brake air chambers are positioned on the axle of the trailer, and each spring brake air chamber corresponds to one wheel and the air bag of the trailer; the electronic brake system of the trailer is connected with each spring brake chamber through a solenoid valve and controls the exhaust and air intake of each spring brake chamber, wherein the solenoid valve is connected with an air source through a pressure limiting valve, the electronic brake system of the trailer sends a command to the solenoid valve to control the solenoid valve to realize the air flow between the air source and the spring brake chambers so as to lock or unlock the wheels, and the electronic brake system of the trailer can replace a mechanical locking burglar alarm which is only provided with a single physical structure and is adopted in the matching of the trailer and a tractor and the anti-theft matching of the trailer in the prior art, and quote identification codes of the matched tractor and the trailer to encrypt or unlock the electronic brake system of the trailer.)

1. A trailer theft prevention system, characterized in that the system comprises:

the spring brake air chambers are positioned on the axle of the trailer, and each spring brake air chamber corresponds to one wheel and the air bag of the trailer;

a trailer electronic brake system connected with each spring brake air chamber through an electromagnetic valve and controlling the air exhaust and air intake of each spring brake air chamber, wherein,

the electromagnetic valve is connected with an air source through a pressure limiting valve, the trailer electronic braking system sends an instruction to the electromagnetic valve, and the electromagnetic valve is controlled to achieve air flow between the air source and the spring braking air chamber, so that the wheels are locked or unlocked.

2. The trailer theft prevention system of claim 1, wherein the spring brake chamber comprises a service brake chamber and a parking brake chamber that form a dual spring control configuration, wherein,

when the solenoid valve controls the spring brake chamber to exhaust, the wheel is locked; when the electromagnetic valve controls the air source to exhaust air to the spring brake air chamber, the wheel is unlocked.

3. The trailer theft prevention system as defined in claim 2 wherein the solenoid valve includes a first connection port, a second connection port, and a third connection port thereon, wherein,

the first connecting port is respectively communicated with the parking brake cavity of each spring brake air chamber;

the second connecting port is communicated with the gas source through the pressure limiting valve;

the third connection port serves as an exhaust port, wherein,

when the first connecting port is controlled to be communicated with the third connecting port through the electromagnetic valve, the parking brake cavity exhausts air outwards, so that the wheels are locked; when the first connecting port is controlled to be communicated with the second connecting port through the electromagnetic valve, the air source inflates the parking brake cavity of the spring brake chamber, and the wheel is unlocked.

4. The trailer theft prevention system as defined in claim 1, further comprising:

a coded unlocking system adapted to the trailer electric brake system, wherein,

and encrypting or unlocking the trailer electronic brake system through the password unlocking system.

5. The trailer theft prevention system as claimed in claim 4, wherein the password unlock system is connected to an alarm device which is triggered to issue an alarm when the password unlock system is not successfully unlocked.

6. A trailer theft protection method according to claims 1 to 5, characterized in that it comprises the following steps:

step S1 of configuring an identification code for each trailer and configuring a password unlocking system which is unlocked through the identification code and is matched with the electronic braking system of the trailer;

step S2, configuring a solenoid valve which is connected with the trailer electronic brake system and controls the on-off of an air source;

step S3 of configuring a spring brake chamber in communication with the air source and controlling the flow of air between the air source and the spring brake chamber via the solenoid valve.

7. The trailer theft prevention method as claimed in claim 6, wherein in the step S1, the process of unlocking the trailer electric brake system through the identification code is as follows:

in a parking state, when the trailer needs to be pulled, if the identification code is input for adaptation, the electronic brake system of the trailer controls the electromagnetic valve to be communicated with the air source, so that the spring brake air chamber is inflated, and the unlocking of the trailer wheels is realized;

under the parking state, when needs and the trailer separation, if input identification code adaptation, then trailer electronic braking system control solenoid valve and gas vent intercommunication are so that spring brake chamber outwards exhausts, realize trailer wheel locking.

8. The trailer theft protection method as claimed in claim 7, further comprising the step of configuring an alarm device, wherein,

and configuring the identification codes of the tractors and the trailers in one-to-one correspondence, and giving an alarm by the alarm device when the tractors are not matched with the trailers or the electronic brake systems of the trailers are not unlocked correctly.

Technical Field

The invention belongs to the technical field of vehicle anti-theft safety, and particularly relates to a trailer anti-theft system and an anti-theft method.

Background

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide a trailer anti-theft system anti-theft method which replaces a mechanical locking anti-theft device which is only provided with a single physical structure and is adopted in the prior art in the trailer and tractor adaptation and the trailer anti-theft adaptation and introduces the identification codes of the adapted tractor and trailer to encrypt or unlock the trailer electronic brake system.

In order to solve the above technical problems, the present invention provides a trailer theft prevention system, comprising: the spring brake air chambers are positioned on the axle of the trailer, and each spring brake air chamber corresponds to one wheel and the air bag of the trailer; the electronic brake system of the trailer is connected with each spring brake chamber through a solenoid valve and controls the exhaust and air intake of each spring brake chamber, wherein the solenoid valve is connected with an air source through a pressure limiting valve, the electronic brake system of the trailer sends an instruction to the solenoid valve, and the solenoid valve is controlled to realize the air flow between the air source and the spring brake chambers so as to realize the locking or unlocking of the wheels.

Preferably, the spring brake chamber comprises a service brake chamber and a parking brake chamber, the service brake chamber and the parking brake chamber form a double-control spring control structure, wherein when the solenoid valve controls the spring brake chamber to exhaust, the wheel is locked; when the electromagnetic valve controls the air source to exhaust air to the spring brake air chamber, the wheel is unlocked.

Further preferably, the solenoid valve comprises a first connection port, a second connection port and a third connection port, wherein the first connection port is respectively communicated with the parking brake cavity of each spring brake air chamber; the second connecting port is communicated with the gas source through the pressure limiting valve; the third connecting port is used as an exhaust port, and when the first connecting port is controlled to be communicated with the third connecting port through the electromagnetic valve, the parking brake cavity exhausts air outwards, so that the wheel is locked; when the first connecting port is controlled to be communicated with the second connecting port through the electromagnetic valve, the air source inflates the parking brake cavity of the spring brake chamber, and the wheel is unlocked.

Still preferably, the system further comprises: and the password unlocking system is matched with the trailer electronic braking system, wherein the trailer electronic braking system is encrypted or unlocked through the password unlocking system.

Further preferably, the password unlocking system is connected with an alarm device, and when the password unlocking system is not successfully unlocked, the alarm device is triggered to give an alarm.

Correspondingly, the invention also provides a trailer anti-theft method based on the trailer anti-theft system, which comprises the following steps: step S1 of configuring an identification code for each trailer and configuring a password unlocking system which is unlocked through the identification code and is matched with the electronic braking system of the trailer; step S2, configuring a solenoid valve which is connected with the trailer electronic brake system and controls the on-off of an air source; step S3 of configuring a spring brake chamber in communication with the air source and controlling the flow of air between the air source and the spring brake chamber via the solenoid valve.

Preferably, in step S1, the process of unlocking the trailer electronic brake system by the identification code is as follows: in a parking state, when the trailer needs to be pulled, if the identification code is input for adaptation, the electronic brake system of the trailer controls the electromagnetic valve to be communicated with the air source, so that the spring brake air chamber is inflated, and the unlocking of the trailer wheels is realized; under the parking state, when needs and the trailer separation, if input identification code adaptation, then trailer electronic braking system control solenoid valve and gas vent intercommunication are so that spring brake chamber outwards exhausts, realize trailer wheel locking.

Further preferably, the method further comprises the step of configuring an alarm device, wherein the identification codes of the tractors and the trailers are configured to be in one-to-one correspondence, and the alarm device gives an alarm when the tractors are not matched with the trailers or the electronic brake systems of the trailers are not unlocked correctly.

Due to the adoption of the technical scheme, compared with the prior art, the invention has the following advantages:

1. the method has the advantages that the adaptive control of the starting and stopping of the trailer is converted into the process of encrypting or unlocking the electronic brake system of the trailer through the identification code adaptation and the identification code, so that a mechanical locking burglar alarm which is only provided with a single physical structure and is adopted in the trailer and tractor adaptation and trailer antitheft adaptation in the prior art is replaced, the process of unlocking the trailer is greatly simplified, and the antitheft safety level of the trailer is obviously improved;

2. the method comprises the following steps that a spring brake air chamber is introduced and correspondingly connected with each wheel of a trailer and an air bag, and when an electronic brake system of the trailer works, the unlocking process of the trailer wheels is converted into the process that the spring brake air chamber exhausts outwards or the air bag inflates the spring brake air chamber;

3. an alarm device is also introduced, when the identification code is identified incorrectly, an alarm is given, so that potential safety hazards caused by abnormal movement of the tractor and the trailer due to identification errors or forced trailer forced movement caused by unstable connection of the tractor and the trailer are avoided;

4. in the encryption process, the whole vehicle can be directly locked by a vehicle key of the tractor, or the power supply of the key is reserved for access, and the tractor and the trailer are locked only by the identification code, so that different requirements of locking the tractor and the trailer under different conditions such as parking or temporary stop of the vehicle are met; in the decryption process, the tractor and the trailer can be matched to further improve the safety level of connection between the tractor and the trailer only when the power supply of a vehicle key is ensured to be switched on and the identification code is required to be correct;

5. the trailer electronic brake system is connected with each wheel and the spring brake chamber through the electromagnetic valve, and a plurality of connectors on the electromagnetic valve are respectively a parking brake chamber, an air source and an air outlet of the spring brake chamber, so that the connection between the spring brake chamber and the air outlet is realized by controlling the on-off of each connecting passage of the electromagnetic valve, and the spring brake chamber is communicated with the air outlet to exhaust the air outwards or communicated with the air source to charge the air source to the air outlet;

6. in addition, the tractor can be configured with an identification code which is the same as or different from that of the trailer, and when the identification code of the tractor and/or the trailer is not correctly identified or the identification code of the tractor and/or the trailer is incorrectly matched, the alarm device is triggered to give an alarm, so that the anti-theft safety level of the whole vehicle is further improved.

Drawings

FIG. 1 is a schematic diagram illustrating the structure of a trailer theft prevention system as described in a preferred embodiment of the present invention;

fig. 2 is a schematic diagram showing an equivalent circuit structure of a solenoid valve in the trailer theft prevention system shown in fig. 1.

Detailed Description

Embodiments of a trailer theft prevention system and method according to the present invention will be described below with reference to the accompanying drawings. Those of ordinary skill in the art will recognize that the described embodiments can be modified in various different ways, without departing from the spirit and scope of the present invention. Accordingly, the drawings and description are illustrative in nature and not intended to limit the scope of the claims. Furthermore, in the present description, the drawings are not to scale and like reference numerals refer to like parts.

It should be noted that, in the embodiments of the present invention, the expressions "first" and "second" are used to distinguish two entities with the same name but different names or different parameters, and it is understood that "first" and "second" are merely for convenience of description and should not be construed as limitations of the embodiments of the present invention, and the descriptions thereof in the following embodiments are omitted.

The trailer anti-theft system in the preferred embodiment of the invention encrypts or unlocks the trailer electronic brake system through the identification code so as to realize the locking or unlocking of the trailer wheels, thereby achieving the purposes of encrypting and locking the trailer.

In order to achieve the purpose, the electronic brake system of the trailer controls the on-off of the electromagnetic valves connected with a plurality of wheels and air bags of the vehicle through the electronic brake system of the trailer, so that the inflation or the deflation of the spring brake air chambers are realized, the wheels of the vehicle are unlocked or unlocked, and the electronic brake system of the trailer is controlled through matching adaptive modes such as similar identification codes or user login. Fig. 1 is a schematic view showing the structure of a trailer theft prevention system according to a preferred embodiment of the present invention. Referring to fig. 1, the trailer anti-theft system in the preferred embodiment of the present invention is comprised of a trailer electric brake system 10, a solenoid valve 20, an air supply 30, and a plurality of spring brake chambers 40. The spring brake chambers 40 are located on the trailer axle 50 and each spring brake chamber 40 corresponds to a wheel 60 of the trailer and an air bag 70 at the location of the trailer axle 50. The trailer electronic brake system 10 is connected with each spring brake air chamber 40 through the electromagnetic valve 20, so as to control the exhaust or intake of the air chamber. In addition, as a conventional means, a pressure limiting valve 80 is further disposed at the position of the air source 30 to stabilize the air pressure during the inflation process of the air source 30.

The spring brake chamber 40 includes a service brake chamber and a parking brake chamber corresponding to a service brake and a parking brake, respectively, and since the adaptation between the tractor and the trailer is most likely to occur after the parking brake, in the embodiment of the present invention, it is associated with the parking brake chamber in the spring brake chamber 40. Incidentally, the service brake chamber and the parking brake chamber in the spring brake chamber 40 form a double-control spring control structure.

Fig. 2 is a schematic diagram showing an equivalent circuit structure of a solenoid valve in the trailer theft prevention system shown in fig. 1. The solenoid valve 20 includes a first connection port 21, a second connection port 22 and a third connection port 23, wherein the first connection port 21 is respectively communicated with the parking brake chamber of each spring brake chamber, the second connection port 22 is communicated with the air source 30 through a pressure limiting valve 80, and the third connection port 23 is directly communicated with the outside as an exhaust port. In the actual operation process, when the vehicle needs to be locked, 24V is applied between the 62.3 connection port and the 62.4 connection port, and 0V is applied between the 62.1 connection port and the 62.2 connection port, so that the first connection port 21 is controlled to be communicated with the third connection port 23 through the solenoid valve 20, that is, the parking brake cavity of the spring brake air chamber 40 is communicated with the outside, so that the parking brake cavity is exhausted outwards, and the wheel locking, that is, the trailer locking is realized, correspondingly, when the locking needs to be released, 0V is applied between the 62.3 connection port and the 62.4 connection port, 24V is applied between the 62.1 connection port and the 62.2 connection port, so that the first connection port 21 is controlled to be communicated with the second connection port 22 through the solenoid valve 20, that is, the pipeline between the parking brake cavity of the spring brake air chamber 40 and the air bag 70 is connected, so that the air bag 70 inflates the parking brake cavity under the control of the, in this way, the trailer wheels 60 are unlocked.

The trailer electronic brake system 10 is adapted by a password unlocking system, which is to be understood as encrypting or decrypting the trailer electronic brake system 10. Specifically, as a preferred scheme, each trailer is assigned with an identification code which is uniquely corresponding to the trailer, for example, in the preferred embodiment of the invention, each trailer is configured with a PIN code which is composed of multiple digits or is composed of digits and letters, when the tractor is connected with the trailer, the corresponding PIN code needs to be input on a vehicle control panel or a touch screen, and a controller of the trailer electronic brake system 10 identifies the PIN code, and if the input PIN code is correct, the corresponding operation is carried out. In other embodiments of the present invention, to further improve the safety level of the system, the tractor may be configured with an identification code that is the same as or different from that of the trailer, and if the identification codes of the tractor and the trailer are the same, the tractor and the trailer may be normally connected only when the identification codes are identical, or the identification codes of the tractor and the trailer are identified in different but one-to-one correspondence forms, which may also have the effect of improving the safety level. In addition, an alarm device matched with the password unlocking system can be arranged, when the identification code is input incorrectly or in the scheme with higher safety level, the alarm device gives a long-ringing alarm when the tractor and the trailer are matched incorrectly, and can give a short-ringing alarm to prompt the matching success when the tractor and the trailer are matched successfully. The vehicle can be locked by inputting a corresponding PIN code in the parking state, the vehicle can be directly locked by a vehicle key of the tractor in the parking state, the power supply of the key can be kept to be connected, and the tractor and the trailer are locked only by the identification code, so that the requirements of locking the tractor and the trailer under different conditions such as parking or temporary parking of the vehicle are met; in the decryption process, the tractor and the trailer can be matched to further improve the safety level of the connection between the tractor and the trailer only when the power supply of the vehicle key is ensured to be switched on and the identification code is required to be correct. When the controller of the trailer electronic brake system receives the correct PIN code, a command is sent to the electromagnetic valve to control the inflation and the deflation of the parking brake chamber of the spring brake chamber.

Correspondingly, the invention also provides a trailer anti-theft method based on the trailer anti-theft system, which comprises the following steps: step S1 of configuring an identification code for each trailer and configuring a password unlocking system which is unlocked through the identification code and is matched with the electronic braking system of the trailer; step S2, configuring a solenoid valve which is connected with the trailer electronic brake system and controls the on-off of an air source; step S3 of configuring a spring brake chamber in communication with the air source and controlling the flow of air between the air source and the spring brake chamber via the solenoid valve.

In the step S1, the process of unlocking the trailer electronic brake system through the identification code is that in a parking state, when a trailer needs to be pulled, the identification code (PIN code) is input through a vehicle control board or a touch screen, and if the input identification code (PIN code) is adapted, the trailer electronic brake system controls the electromagnetic valve to be communicated with the air source, so that the parking brake chamber of the spring brake chamber is inflated, the wheels of the trailer are unlocked, the connection between the tractor and the trailer is completed, the tractor can pull the trailer to run, and in the running process of the tractor and the trailer, if the trailer electronic brake system detects that the trailer does not normally move, the alarm device is correspondingly triggered to send an alarm; under the parking state, when needs and the trailer separation, identification code (PIN sign indicating number) is inputed through vehicle control panel or touch screen equally, if identification code (PIN sign indicating number) adaptation of input, then trailer electronic braking system control solenoid valve and gas vent intercommunication to make the outside exhaust in spring brake chamber's parking braking chamber, realize trailer wheel locking.

The present invention has been described in detail, and the embodiments are only used for understanding the method and the core idea of the present invention, and the purpose of the present invention is to enable those skilled in the art to understand the content of the present invention and to implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.