A trailer system detection device

Abstract

The application relates to a trailer system detection device which comprises a light detection module provided with a plurality of indicator lamps, a plurality of indicator lamp wire harnesses connected with a trailer lamp socket of a towing vehicle; an air pressure detection module provided with a first air pressure gauge and a second air pressure gauge for connecting a towing vehicle brake air circuit; a brake system detection module comprising a first test circuit and a second test circuit electrically connected with an EBS / ABS trailer power socket of the towing vehicle; the first test circuit comprises a first wire connected with a positive electronic valve pin and a negative electronic valve pin of the EBS / ABS trailer power socket and a first test lamp arranged on the first wire; and the second test circuit comprises a second wire connected with a positive power pin and a negative power pin of the EBS / ABS trailer power socket and a second test lamp arranged on the second wire. The light signal, the brake air pressure and the ABS electronic brake can be simultaneously detected through the plurality of modules, the detection efficiency is high, and the fault checking is more comprehensive.

Description

Technical Field

[0001] This application relates to the field of automotive testing technology, and in particular to a trailer system testing device. Background Technology

[0002] In the field of road freight transport, trailers are the core carriers of cargo transportation, and their driving safety is directly related to road traffic safety, freight efficiency, and the safety of people and property. With the large-scale development of the freight industry, the frequency of trailer use is constantly increasing. However, the electrical and pneumatic components in the trailer system are constantly subjected to high-frequency vibration, complex road conditions, and harsh environments, which can easily lead to faults such as aging wiring, poor contact, air leakage, and valve jamming. Among these, the trailer light circuit, trailer valve air circuit, and trailer ABS / EBS circuit are key systems that ensure the braking, warning, and dynamic stability of the trailer. If their potential faults are not detected in time, they can easily lead to serious traffic accidents such as rear-end collisions, rollovers, and brake failure. Currently, most testing devices for trailer systems adopt a "single-function testing" mode, which makes it difficult to achieve comprehensive integrated testing of the three key systems mentioned above. This results in low testing efficiency, incomplete troubleshooting, and an inability to meet the fast and accurate testing needs in actual freight scenarios. Summary of the Invention

[0003] This application provides a trailer system testing device to solve the problems of low testing efficiency and incomplete fault diagnosis caused by the use of a single-function testing mode in related technologies.

[0004] In a first aspect, a trailer system testing device is provided, comprising: a light testing module having multiple indicator lights, the multiple indicator light wiring harness being connected to a trailer light socket of a tractor vehicle; a pressure testing module having a first pressure gauge and a second pressure gauge for connecting to the brake air circuit of the tractor vehicle; and a brake system testing module including a first test circuit and a second test circuit electrically connected to the EBS / ABS trailer power socket of the tractor vehicle; the first test circuit including a first wire connected to the positive and negative electronic valve pins of the EBS / ABS trailer power socket and a first test lamp disposed on the first wire; and the second test circuit including a second wire connected to the positive and negative power pins of the EBS / ABS trailer power socket and a second test lamp disposed on the second wire.

[0005] In some embodiments, the braking system detection module further includes a third wire and a test switch disposed on the third wire, the two ends of which are respectively connected to the alarm device pin and the negative power supply pin of the EBS / ABS trailer power socket.

[0006] In some embodiments, the braking system detection module further includes an OBD diagnostic box, the CAN H pin of which is connected to the CAN H pin of the EBS / ABS trailer power socket via a fourth wire; The CAN L pin of the OBD diagnostic box is connected to the CAN L pin of the EBS / ABS trailer power socket via a fifth wire. The two grounding pins of the OBD diagnostic box are connected in parallel with the negative power pin of the EBS / ABS trailer power socket through the sixth and seventh wires, respectively. The power pin of the OBD diagnostic box is connected to the positive power pin of the EBS / ABS trailer power socket via the eighth wire.

[0007] In some embodiments, the power pins of the OBD diagnostic box are connected to the positive power pins of the EBS / ABS trailer power socket via twisted-pair cables.

[0008] In some embodiments, the light detection module further includes multiple ninth wires, each of which is equipped with an indicator light. One end of each ninth wire is connected to the common ground pin of the trailer light socket, and the other end is connected to the corresponding function signal pin, so that the indicator lights are connected in parallel.

[0009] In some embodiments, the multiple indicator lights are respectively parking light indicator lights, left turn indicator lights, right turn indicator lights, brake indicator lights, fog light indicator lights, or reversing indicator lights.

[0010] In some embodiments, each indicator light, the first test light, and the second test light are provided with a corresponding label.

[0011] In some embodiments, the range of the first and second barometers is 0-1.6 MPa.

[0012] In some embodiments, a mounting frame is also included, on which the light detection module, air pressure detection module, and braking system detection module are all mounted.

[0013] In some embodiments, both the first test lamp and the second test lamp are LED lamps.

[0014] This application provides a trailer system testing device. A light detection module connects to the trailer light socket of the tractor to detect the connection status of the trailer lights. A first and second pressure gauge from the air pressure detection module are connected to two brake air lines on the tractor to detect whether the output pressure of the tractor's brake air lines is normal. The brake system testing module verifies the ABS system power supply and valve control. The two ends of the first test light in the circuit are connected to the "positive electronic valve pin" and "negative electronic valve pin" of the EBS / ABS trailer power socket, respectively, to detect the actual power supply circuit of the ABS electronic valve. When the tractor starts the ABS system, if the first test light illuminates, it indicates that the control signal output from the tractor to the ABS electronic valve is normal and the pin contact is good. The two ends of the second test light in the circuit are connected to the "positive power pin" and "negative power pin" of the EBS / ABS trailer power socket, respectively, to detect whether the power supply from the tractor to the trailer ABS system is normal. If the second test light illuminates after the tractor is powered on, it indicates that the ABS system power supply path is normal. Multiple modules can simultaneously detect light signals, brake air pressure, and ABS electronic braking, resulting in high testing efficiency and more comprehensive fault diagnosis. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the trailer system detection device provided in the embodiments of this application; Figure 2 This is a schematic diagram of the structure of the light detection module and the air pressure detection module provided in the embodiments of this application; Figure 3 A circuit diagram of a light detection module provided in an embodiment of this application; Figure 4 A circuit diagram of a braking system detection module provided in an embodiment of this application; Figure 5 A schematic diagram of the pinout of the EBS / ABS trailer power socket provided in the embodiments of this application; Figure 6 This is a rear view of the OBD diagnostic box provided in an embodiment of this application.

[0017] In the diagram: 1. Light detection module; 101. Indicator light; 2. Air pressure detection module; 201. First air pressure gauge; 202. Second air pressure gauge; 3. Braking system detection module; 301. First test circuit; 3011. First test light; 302. Second test circuit; 3021. Second test light; 303. Test switch; 304. OBD diagnostic box; 4. Mounting frame; 5. Identification plate; 6. Trailer light socket; 7. EBS / ABS trailer power socket; 8. Trailer valve. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0019] This application provides a trailer system testing device that can solve the problems of low testing efficiency and incomplete fault diagnosis caused by the use of a single-function testing mode in related technologies.

[0020] like Figure 1 As shown, a trailer system testing device includes a light detection module 1, an air pressure detection module 2, and a braking system detection module 3, which are fixedly installed on a mounting frame 4.

[0021] like Figures 1 to 3 As shown, there is a light detection module 1, which has multiple indicator lights 101. The wiring harness of the multiple indicator lights 101 is connected to the trailer light socket 6 of the tractor. The trailer light socket 6 is a seven-hole socket, including one common grounding pin (1# ground wire pin) and several function signal pins. The function signal pins include 2# small light pin, 3# left turn signal pin, 4# brake light pin, 5# right turn signal pin, 6# fog light pin, and 7# reversing light pin.

[0022] The light detection module 1 also includes 6 ninth wires, each of which is equipped with an indicator light 101. One end of each ninth wire is connected to the common ground pin, and the other end is connected to the corresponding function signal pin, so that the indicator lights 101 are connected in parallel.

[0023] Specifically, the multiple indicator lights 101 are respectively the small light indicator light, left turn indicator light, right turn indicator light, brake indicator light, fog light indicator light, and reverse light indicator light. The negative electrodes of all the indicator lights 101 are connected to the 1# ground wire pin, the positive electrode of the small light indicator light is connected to the 2# small light pin, the positive electrode of the left turn indicator light is connected to the 3# left turn light pin, the positive electrode of the brake indicator light is connected to the 4# brake light pin, the positive electrode of the right turn indicator light is connected to the 5# right turn light pin, the positive electrode of the fog light indicator light is connected to the 6# fog light pin, and the reverse light indicator light is connected to the 7# reverse light pin. To facilitate quickly distinguishing the functions of each indicator light and avoid operation confusion, each indicator light 101 is equipped with an identification plate 5, and all the identification plates 5 are set on the installation frame 4, and the identification positions correspond to the corresponding indicator lights one by one, and the functions of the indicator lights and the associated circuits can be intuitively confirmed through the information on the identification plates.

[0024] All the indicator lights 101 have a voltage of 24 volts and adopt eye-catching colors such as red or green.

[0025] The air pressure detection module 2 is provided with a first air pressure gauge 201 and a second air pressure gauge 202 for connecting the braking air circuit of the tractor. The measuring ranges of the first air pressure gauge 201 and the second air pressure gauge 202 are 0 - 1.6 MPa.

[0026] During detection, connect the trailer lamp socket 6 on the vehicle to the lighting detection module 1 electrically, connect the red and yellow air pipes on the vehicle to the first air pressure gauge 201 and the second air pressure gauge 202 respectively, and turn on the small light indicator light and the left turn indicator light in sequence to check whether the corresponding bulbs light up. If they light up, it is regarded as qualified. If the first air pressure gauge 201 connected to the red air pipe has normal air flow, it is regarded as qualified. When the handbrake is not pulled or the brake is not stepped on, there is no air in the yellow pipe, and when the handbrake is pulled or the brake is stepped on, there is air in the yellow pipe, which is regarded as qualified.

[0027] As Figures 4 to 6 shown, the braking system detection module 3 includes a first test circuit 301 and a second test circuit 302 electrically connected to the EBS / ABS trailer power socket 7 of the tractor. The EBS / ABS trailer power socket 7 is a seven-hole socket; the first test circuit 301 includes a first wire electrically connected to the positive electronic valve pin (i.e., the 1# pin in Figure 5 ) and the negative electronic valve pin (i.e., the 4# pin in Figure 5 ) of the EBS / ABS trailer power socket 7, and a first test lamp 3011 provided on the first wire; the second test circuit 302 includes a second wire electrically connected to the positive power pin (i.e., the 2# pin in Figure 5 ) and the negative power pin (i.e., the 3# pin in Figure 5 ) of the EBS / ABS trailer power socket 7, and a second test lamp 3021 provided on the second wire.

[0028] The braking system detection module 3 also includes a third wire and a test switch 303 located on the third wire. The two ends of the third wire are electrically connected to the alarm device pins of the EBS / ABS trailer power socket 7 (i.e., Figure 5 Pin #5 and negative power supply pin (i.e. Figure 5 (Pin #3).

[0029] Braking system detection module 3 also includes OBD diagnostic box 304, whose CAN H pin is connected to the CAN H pin of EBS / ABS trailer power socket 7 (i.e. Figure 5 Pin #6 (middle) is connected via the fourth wire; The CAN L pin of the OBD diagnostic box 304 is connected to the CAN L pin of the EBS / ABS trailer power socket 7 (i.e. Figure 5 Pin #7 (middle) is connected via the fifth wire; The two grounding pins of the OBD diagnostic box 304 are connected to the negative power pin of the EBS / ABS trailer power socket 7 via the sixth and seventh wires, respectively (i.e., Figure 5 (Pin #3 in the middle) in parallel; The power pin of the OBD diagnostic box 304 is connected to the positive power pin of the EBS / ABS trailer power socket 7 via the eighth wire (i.e., Figure 5 Connect pin #2.

[0030] Furthermore, the power pin of the OBD diagnostic box 304 is connected to the positive power pin of the EBS / ABS trailer power socket 7 via a twisted pair cable.

[0031] Furthermore, both the first test lamp 3011 and the second test lamp 3021 are 24V LED lamps.

[0032] Furthermore, both the first test light 3011 and the second test light 3021 are equipped with corresponding identification plates.

[0033] During testing, connect the EBS / ABS trailer power socket 7 on the vehicle to the braking system testing module 3. With the main power switch on, the first test light 3011 should not illuminate, while the second test light 3021 should. When the ignition key is turned to the "ON" position, both the first test light 3011 and the second test light 3021 should illuminate. Closing the manual test switch 303 will cause the instrument panel to report an EBS / ABS fault; releasing the switch will resolve the fault. In EBS configuration mode, a command to collect CAN messages is sent from the workstation. If the OBD diagnostic box 304 displays normal communication, the test is considered successful. In non-EBS configuration mode, the test is not performed.

[0034] This application describes the development of a simple testing device that uses indicator lights, a pressure gauge, and a test switch connected to a computer to test whether trailer lights, trailer valves, and trailer ABS / EBS circuits are working properly. This device offers high testing efficiency and more comprehensive troubleshooting.

[0035] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0036] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0037] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A trailer system detection device, characterized in that, It includes: a light detection module (1), which is provided with multiple indicator lights (101), and the wiring harness of the multiple indicator lights (101) is connected to the trailer light socket (6) of the tractor; a pressure detection module (2), which is provided with a first pressure gauge (201) and a second pressure gauge (202) for connecting the brake air circuit of the tractor; a brake system detection module (3), which includes a first test circuit (301) and a second test circuit (302) electrically connected to the EBS / ABS trailer power socket (7) of the tractor; the first test circuit (301) includes a first wire connected to the positive electronic valve pin and the negative electronic valve pin of the EBS / ABS trailer power socket (7) and a first test lamp (3011) provided on the first wire; the second test circuit (302) includes a second wire connected to the positive power pin and the negative power pin of the EBS / ABS trailer power socket (7) and a second test lamp (3021) provided on the second wire.

2. The trailer system detection device as described in claim 1, characterized in that: The braking system detection module (3) also includes a third wire and a test switch (303) on the third wire. The two ends of the third wire are respectively connected to the alarm device pin and the negative power supply pin of the EBS / ABS trailer power socket (7).

3. The trailer system detection device as described in claim 1, characterized in that: The braking system detection module (3) also includes an OBD diagnostic box (304), and the CAN H pin of the OBD diagnostic box (304) is connected to the CAN H pin of the EBS / ABS trailer power socket (7) through a fourth wire. The CAN L pin of the OBD diagnostic box (304) is connected to the CAN L pin of the EBS / ABS trailer power socket (7) via a fifth wire; The two grounding pins of the OBD diagnostic box (304) are connected in parallel with the negative power pin of the EBS / ABS trailer power socket (7) through the sixth and seventh wires, respectively; The power pin of the OBD diagnostic box (304) is connected to the positive power pin of the EBS / ABS trailer power socket (7) via the eighth wire.

4. The trailer system detection device as described in claim 3, characterized in that: The power pin of the OBD diagnostic box (304) is connected to the positive power pin of the EBS / ABS trailer power socket (7) via a twisted pair cable.

5. The trailer system detection device as described in claim 1, characterized in that: The light detection module (1) also includes multiple ninth wires, each of which is equipped with an indicator light (101). One end of each ninth wire is connected to the common grounding pin of the trailer light socket (6), and the other end is connected to the corresponding function signal pin, so that the indicator lights (101) are connected in parallel.

6. The trailer system detection device as described in claim 5, characterized in that: The multiple indicator lights (101) are respectively the parking light indicator light, the left turn indicator light, the right turn indicator light, the brake indicator light, the fog light indicator light, or the reversing indicator light.

7. The trailer system detection device as described in claim 5, characterized in that: Each indicator light (101), the first test light (3011), and the second test light (3021) is equipped with a corresponding label (5).

8. The trailer system detection device as described in claim 1, characterized in that: The range of the first barometer (201) and the second barometer (202) is 0-1.6 MPa.

9. The trailer system detection device as described in claim 1, characterized in that: It also includes a mounting frame (4), on which the light detection module (1), air pressure detection module (2) and braking system detection module (3) are all mounted.

10. The trailer system detection device as described in claim 1, characterized in that: Both the first test lamp (3011) and the second test lamp (3021) are LED lamps.

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