Fire signal receiving and transmitting communication device and vehicle test equipment

Abstract

The utility model provides a misfire signal transmit-receive communication device and vehicle test equipment, the misfire signal transmit-receive communication device comprises a processor, a first patch cord and a second patch cord, the processor is provided with a signal transmitting end and a signal receiving end, one end of the first patch cord is connected with the signal receiving end, and the other end of the first patch cord is connected with the second patch cord. The other end is connected with an ignition signal generation port of the vehicle; one end of the second patch cord is connected with the signal transmitting end, and the other end is connected with an ignition signal receiving port of the vehicle; the processor is used for receiving an ignition signal through the first plug wire, generating a misfire signal when the ignition signal is received and sending the misfire signal to an ignition signal receiving port of the vehicle through the second plug wire. According to the technical scheme, unrecoverable damage to a vehicle wire harness, an ignition coil and the like is avoided, and the fault that the vehicle ignition signal line is mistakenly prompted to be disconnected when the vehicle is recognized to be on fire is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile production and manufacturing, in particular to a fire signal transceiver communication device and vehicle testing equipment. Background Art

[0002] With the continuous increase in the number of motor vehicles, the problem of motor vehicle pollutants is becoming increasingly serious. In order to control automobile exhaust emissions, regulations and standards stipulate that vehicles should be equipped with an on-board diagnostic (OBD) system to monitor emissions during actual operation of motor vehicles. The OBD system should be able to monitor the working condition of the vehicle's emission system during actual use through the on-board computer, and be able to monitor faults in the emission system and notify the vehicle driver of a fault by lighting up the malfunction indicator (MIL). The OBD system monitors the performance of the emission system to ensure that the vehicle's emissions do not exceed the OBD threshold before detecting an emission system fault, thereby ensuring effective control of emissions from motor vehicles in use.

[0003] The OBD system should monitor engine misfires, identify cylinders that are in a misfire state, and store related fault codes. In order to verify the effectiveness of the OBD system, a misfire-related OBD simulation test is required, that is, by inducing the vehicle engine to misfire. Before the vehicle emissions exceed the standard threshold, the OBD system should be able to identify the misfire, store the misfire fault code, and light up the malfunction indicator (MIL) to prompt the driver, without any other fault codes appearing.

[0004] However, in the current existing technology, the ignition signal on the car is sent by the ECU to the ignition coil. To prevent the vehicle engine from misfiring, the ignition signal sent by the ECU needs to be intercepted, but the ECU and the ignition coil are connected by a special automotive wiring harness. When conducting OBD simulation experiments, the ECU and the ignition coil are usually connected by destroying the automotive wiring harness. However, after the test is completed, monitoring experiments for other projects must be carried out to ensure that the ECU, wiring harness, ignition coil, etc. on the vehicle are not damaged, which will affect subsequent detection and prolong the detection time. While identifying a vehicle misfiring, the method of destroying the wiring harness may also mistakenly indicate a fault in the vehicle's ignition signal line being broken, resulting in inaccurate detection. Utility Model Content

[0005] The main purpose of the utility model is to provide a fire signal transceiver communication device and a vehicle testing device, aiming to solve the technical problems in the prior art that the detection method of damaging the wiring harness affects subsequent detection, prolongs the detection time, and causes inaccurate detection.

[0006] To achieve the above object, the utility model provides a fire signal transceiver communication device, the fire signal transceiver communication device comprising:

[0007] A processor having a signal transmitting end and a signal receiving end,

[0008] A first plug wire, one end of which is connected to the signal receiving end, and the other end of which is used to be connected to the ignition signal generating port of the vehicle;

[0009] a second plug wire, one end of which is connected to the signal transmitting end, and the other end of which is used to be connected to the ignition signal receiving port of the vehicle;

[0010] The processor is used to receive an ignition signal through the first plug wire, generate a misfire signal when receiving the ignition signal, and send the misfire signal to the ignition signal receiving port of the vehicle through the second plug wire.

[0011] Optionally, the fire signal transceiver communication device further includes a memory, the memory is connected to the processor, and the memory is used to store the fire signal;

[0012] The misfire signal includes a misfire state and a trigger signal associated with the misfire state. The processor is used to call the misfire state and send the trigger signal associated with the misfire state to the ignition signal receiving port of the vehicle through the second plug wire.

[0013] Optionally, the fire signal transceiver communication device further includes an adjustable resistor, one end of the adjustable resistor is connected to the signal receiving end, and the other end is grounded.

[0014] Optionally, the adjustable resistor includes:

[0015] Resistance coil;

[0016] a first wiring harness connector, one end of which is connected to one end of the resistance coil, and the other end of which is connected to the first plug wire;

[0017] A second wiring harness connector, one end of which is connected to the other end of the resistance coil; and the other end of the second wiring harness connector is grounded.

[0018] Optionally, there are multiple signal transmitting ends, and the number of the signal receiving ends is consistent with the number of the signal transmitting ends and is arranged in a one-to-one correspondence.

[0019] Optionally, the number of the signal transmitting ends is 4.

[0020] Optionally, the fire signal transceiver communication device also includes a quick connector, one end of which is connected to the first plug wire and / or the second plug wire, and the other end of the quick connector is used to be plugged into the ignition signal generating port of the vehicle and / or the ignition signal receiving port of the vehicle.

[0021] Optionally, the fire signal transceiver communication device further includes a power supply, and the power supply is used to supply power to the signal transmitting end and the signal receiving end.

[0022] Optionally, the ignition signal generating port includes a first sub-receiving port, a second sub-receiving port and a third sub-receiving port; the ignition signal receiving port includes a first sub-transmitting port, a second sub-transmitting port and a third sub-transmitting port;

[0023] The first sub-receiving port is connected to the power supply and the first sub-transmitting port respectively;

[0024] The second sub-receiving port is connected to the first plug wire, and the second sub-transmitting port is connected to the second plug wire;

[0025] The third sub-receiving port is connected to the third sub-transmitting port.

[0026] In addition, in order to solve the above problems, the utility model also proposes a vehicle testing device, and the vehicle testing device is applied with the fire signal receiving and transmitting communication device as mentioned above.

[0027] The technical solution of the utility model connects a processor between the ignition signal generating port and the ignition signal receiving port of the vehicle, thereby intercepting the ignition signal and triggering a vehicle fire. The connection method adopts the first plug wire and the second plug wire to connect, avoiding irreversible damage to the vehicle wiring harness, ignition coil, etc., and preventing the false prompt of the vehicle ignition signal line disconnection fault when identifying the vehicle fire. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0029] Figure 1 The utility model is a structural schematic diagram of a fire signal receiving and transmitting communication device.

[0030] Description of Figure Numbers:

[0031]

[0032]

[0033] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0035] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0036] In addition, in the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0037] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0039] The utility model provides a fire signal transceiver communication device and a vehicle testing device, the fire signal transceiver communication device comprises a processor 10, a first plug wire and a second plug wire, the processor 10 is provided with a signal transmitting end 12 and a signal receiving end 11, one end of the first plug wire is connected to the signal receiving end 11, and the other end is used to connect to an ignition signal generating port 40 of a vehicle; one end of the second plug wire is connected to the signal transmitting end 12, and the other end is used to connect to an ignition signal receiving port 50 of the vehicle; the processor 10 is used to receive an ignition signal through the first plug wire, and when the ignition signal is received, a fire signal is generated and the fire signal is sent to the ignition signal receiving port 50 of the vehicle through the second plug wire.

[0040] The processor 10 may be, for example, a single chip microcomputer or a smart mobile terminal. The first plug wire and the second plug wire may be copper wires. One end of the first plug wire may be, for example, a 3.5 mm plug, and the signal receiving end 11 may be a 3.5 mm jack for quick plugging, thereby improving test efficiency. Similarly, the second plug wire and the signal transmitting end 12 may be arranged in a similar structure.

[0041] To improve detection efficiency, a quick connector is installed on the other end of the first plug wire. One end of the quick connector is connected to the first plug wire and / or the second plug wire, and the other end of the quick connector is used to be plugged into the ignition signal generating port 40 of the vehicle and / or the ignition signal receiving port 50 of the vehicle.

[0042] The end connection mechanism of the quick connector is configured to correspond to the structure of the ignition signal generating port 40 and the ignition signal receiving port 50 of the vehicle, thereby realizing the connection between the ports. It should be noted that there is an ignition coil between the ignition signal generating port 40 and the ignition signal receiving port 50 of the vehicle, so that when the ignition signal is sent, the start and stop of the cylinder can be controlled through the two ports.

[0043] The other end of the quick connector is connected to the copper wire of the patch cord to achieve signal transmission between the processor 10 and the two ports. The quick connector connection method can further improve the convenience of operators and achieve fast connection of the interface.

[0044] During the test, the vehicle is controlled to ignite, and the ignition signal generating port 40 generates an ignition signal, which is transmitted to the processor 10 via the first plug wire. Under the action of the processor 10, the ignition signal is intercepted, and the processor 10 generates a misfire signal to the other end. In this process, the OBD system can complete the fault detection and determine the vehicle status according to the detection results.

[0045] In addition, the fire signal transceiver communication device also includes a memory, which is connected to the processor 10, and the memory is used to store the fire signal; the fire signal includes a fire state and a trigger signal associated with the fire state, and the processor 10 is used to call the fire state and send the trigger signal associated with the fire state to the ignition signal receiving port 50 of the vehicle through the second plug wire.

[0046] The memory is a hard disk, and different fault types, that is, different types of misfire signals, can be stored in the memory before testing.

[0047] Each type of misfire signal includes a misfire state and its corresponding trigger signal. The misfire state may be a stored fault code, and the OBD system may identify the type of fault detected by the fault code.

[0048] When performing a simulation test, the processor 10 calls the misfire signal pre-stored in the memory. Specifically, when the operator manually selects the corresponding misfire state, the corresponding trigger signal is called and sent to the ignition signal receiving port 50. The OBD system detects the corresponding misfire state, and the operator determines whether the fault type is consistent with the call, and determines whether the detection is accurate based on the result.

[0049] It can be understood that the misfire signal in the memory can be added or deleted through the background. With the development of the automotive field, the number of in-vehicle applications is gradually increasing. Adding the type of misfire signal through the background can meet the compatibility of more fault types that may occur in the future.

[0050] The technical solution of the utility model connects the processor 10 between the ignition signal generating port 40 and the ignition signal receiving port 50 of the vehicle, thereby intercepting the ignition signal and triggering the vehicle fire. The connection method adopts the first plug wire and the second plug wire to connect, avoiding irreversible damage to the vehicle wiring harness, ignition coil, etc., and preventing the false prompt of the vehicle ignition signal line disconnection fault when identifying the vehicle fire.

[0051] Furthermore, the fire signal transceiver communication device also includes an adjustable resistor 20, please refer to Figure 1 One end of the adjustable resistor 20 is connected to the signal receiving end 11, and the other end is grounded.

[0052] The adjustable resistor 20 is connected to the signal receiving end 11 through a wiring harness, and specifically comprises a resistance coil, a first wiring harness connector and a second wiring harness connector, wherein one end of the first wiring harness connector is connected to one end of the resistance coil, and the other end of the first wiring harness connector is connected to the first plug wire; one end of the second wiring harness connector is connected to the other end of the resistance coil; and the other end of the second wiring harness connector is grounded.

[0053] In this embodiment, two wiring harness connectors are respectively connected to the two sides of the resistance coil, and the resistance coil has a paddle, one of the first wiring harness connector or the second wiring harness connector is connected to the paddle, and the other is connected to the resistance coil. The resistance is adjusted by moving the paddle.

[0054] In addition, one of the first harness connector or the second harness connector is grounded, and the other can be directly connected to the first plug wire. For example, taking the connection between the first harness connector and the first plug wire as an example, the first harness connector is connected to the ignition signal generating port 40 by connecting to the first plug wire, and the second harness connector is grounded to achieve the connection between the adjustable resistor 20 and the ignition signal generating port 40 and the parallel connection between the ground wire, avoiding the possible ignition circuit break fault, and further improving the detection accuracy.

[0055] Furthermore, the number of the signal transmitting terminals 12 is multiple, and the number of the signal receiving terminals 11 is consistent with the number of the signal transmitting terminals 12 and is arranged one by one. In order to further improve the detection efficiency, multiple groups of the signal transmitting terminals 12 and the signal receiving terminals 11 can be arranged at the same time in the assembly. It is possible to detect multiple vehicles or multiple vehicle ports at the same time. Please refer to Figure 1 In this embodiment, a total of 4 groups are provided. On the premise of ensuring the detection efficiency, it can also avoid the fire signal transceiver communication device from being too large in structure and having too high a development cost.

[0056] Furthermore, the fire signal transceiver communication device further includes a power supply 30 , and the power supply 30 is used to supply power to the signal transmitting end 12 and the signal receiving end 11 .

[0057] The ignition signal generating port 40 includes a first sub-receiving port 41, a second sub-receiving port 42 and a third sub-receiving port 43; the ignition signal receiving port 50 includes a first sub-transmitting port 51, a second sub-transmitting port 52 and a third sub-transmitting port 53; the first sub-receiving port 41 is connected to the power supply 30 and the first sub-transmitting port 51 respectively; the second sub-receiving port 42 is connected to the first plug wire, and the second sub-transmitting port 52 is connected to the second plug wire; the third sub-receiving port 43 is connected to the third sub-transmitting port 53.

[0058] The first sub-receiving port 41 is directly connected to the first sub-transmitting port 51, the third sub-receiving port 43 is connected to the third sub-transmitting port 53, and the processor 10 is arranged between the second sub-receiving port 42 and the second sub-transmitting port 52 to intercept the ignition signal. Specifically, the rear transceiver port can be, for example, a power supply 30 signal, a frank signal or a start signal.

[0059] In addition, to solve the above problems, the utility model also proposes a vehicle testing equipment, which uses the fire signal transceiver communication device as mentioned above. The vehicle testing equipment may also include a detection system such as OBD, and is connected to the fire signal transceiver communication device.

[0060] The processor 10 may be, for example, a single chip microcomputer or a smart mobile terminal. The first plug wire and the second plug wire may be copper wires. One end of the first plug wire may be, for example, a 3.5 mm plug, and the signal receiving end 11 may be a 3.5 mm jack for quick plugging, thereby improving test efficiency. Similarly, the second plug wire and the signal transmitting end 12 may be arranged in a similar structure.

[0061] To improve detection efficiency, a quick connector is installed on the other end of the first plug wire. One end of the quick connector is connected to the first plug wire and / or the second plug wire, and the other end of the quick connector is used to be plugged into the ignition signal generating port 40 of the vehicle and / or the ignition signal receiving port 50 of the vehicle.

[0062] The end connection mechanism of the quick connector is configured to correspond to the structure of the ignition signal generating port 40 and the ignition signal receiving port 50 of the vehicle, thereby realizing the connection between the ports. It should be noted that there is an ignition coil between the ignition signal generating port 40 and the ignition signal receiving port 50 of the vehicle, so that when the ignition signal is sent, the start and stop of the cylinder can be controlled through the two ports.

[0063] The other end of the quick connector is connected to the copper wire of the patch cord to achieve signal transmission between the processor 10 and the two ports. The quick connector connection method can further improve the convenience of operators and achieve fast connection of the interface.

[0064] During the test, the vehicle is controlled to ignite, and the ignition signal generating port 40 generates an ignition signal, which is transmitted to the processor 10 via the first plug wire. Under the action of the processor 10, the ignition signal is intercepted, and the processor 10 generates a misfire signal to the other end. In this process, the OBD system can complete the fault detection and determine the vehicle status according to the detection results.

[0065] In addition, the fire signal transceiver communication device also includes a memory, which is connected to the processor 10, and the memory is used to store the fire signal; the fire signal includes a fire state and a trigger signal associated with the fire state, and the processor 10 is used to call the fire state and send the trigger signal associated with the fire state to the ignition signal receiving port 50 of the vehicle through the second plug wire.

[0066] The memory is a hard disk, and different fault types, that is, different types of misfire signals, can be stored in the memory before testing.

[0067] Each type of misfire signal includes a misfire state and its corresponding trigger signal. The misfire state may be a stored fault code, and the OBD system may identify the type of fault detected by the fault code.

[0068] When performing a simulation test, the processor 10 calls the misfire signal pre-stored in the memory. Specifically, when the operator manually selects the corresponding misfire state, the corresponding trigger signal is called and sent to the ignition signal receiving port 50. The OBD system detects the corresponding misfire state, and the operator determines whether the fault type is consistent with the call, and determines whether the detection is accurate based on the result.

[0069] It can be understood that the misfire signal in the memory can be added or deleted through the background. With the development of the automotive field, the number of in-vehicle applications is gradually increasing. Adding the type of misfire signal through the background can meet the compatibility of more fault types that may occur in the future.

[0070] The technical solution of the utility model connects the processor 10 between the ignition signal generating port 40 and the ignition signal receiving port 50 of the vehicle, thereby intercepting the ignition signal and triggering the vehicle fire. The connection method adopts the first plug wire and the second plug wire to connect, avoiding irreversible damage to the vehicle wiring harness, ignition coil, etc., and preventing the false prompt of the vehicle ignition signal line disconnection fault when identifying the vehicle fire.

[0071] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A fire signal transceiver communication device, characterized in that: The fire signal transceiver communication device comprises: A processor, wherein the processor has a signal transmitting end and a signal receiving end; A first plug wire, one end of which is connected to the signal receiving end, and the other end of which is used to be connected to the ignition signal generating port of the vehicle; a second plug wire, one end of which is connected to the signal transmitting end, and the other end of which is used to be connected to the ignition signal receiving port of the vehicle; The processor is used to receive an ignition signal through the first plug wire, generate a misfire signal when receiving the ignition signal, and send the misfire signal to the ignition signal receiving port of the vehicle through the second plug wire.

2. The fire signal transceiver communication device according to claim 1, characterized in that: The fire signal transceiver communication device further includes a memory, the memory is connected to the processor, and the memory is used to store the fire signal; The misfire signal includes a misfire state and a trigger signal associated with the misfire state. The processor is used to call the misfire state and send the trigger signal associated with the misfire state to the ignition signal receiving port of the vehicle through the second plug wire.

3. The fire signal transceiver communication device according to claim 1, characterized in that: The fire signal transceiver communication device further comprises an adjustable resistor, one end of which is connected to the signal receiving end, and the other end of which is grounded.

4. The fire signal transceiver communication device according to claim 3, characterized in that: The adjustable resistor comprises: Resistance coil; a first wiring harness connector, one end of which is connected to one end of the resistance coil, and the other end of which is connected to the first plug wire; A second wiring harness connector, one end of which is connected to the other end of the resistance coil; and the other end of the second wiring harness connector is grounded.

5. The fire signal transceiver communication device according to claim 1, characterized in that: The number of the signal transmitting ends is multiple, and the number of the signal receiving ends is consistent with the number of the signal transmitting ends and is arranged in a one-to-one correspondence.

6. The fire signal transceiver communication device according to claim 5, characterized in that: The number of the signal transmitting ends is 4.

7. The fire signal transceiver communication device according to claim 1, characterized in that: The fire signal transceiver communication device also includes a quick connector, one end of which is connected to the first plug wire and / or the second plug wire, and the other end of the quick connector is used to be plugged into the ignition signal generating port of the vehicle and / or the ignition signal receiving port of the vehicle.

8. The fire signal transceiver communication device according to claim 1, characterized in that: The fire signal transceiver communication device also includes a power supply, and the power supply is used to supply power to the signal transmitting end and the signal receiving end.

9. The fire signal transceiver communication device according to claim 8, characterized in that: The ignition signal generating port includes a first sub-receiving port, a second sub-receiving port and a third sub-receiving port; the ignition signal receiving port includes a first sub-transmitting port, a second sub-transmitting port and a third sub-transmitting port; The first sub-receiving port is connected to the power supply and the first sub-transmitting port respectively; The second sub-receiving port is connected to the first plug wire, and the second sub-transmitting port is connected to the second plug wire; The third sub-receiving port is connected to the third sub-transmitting port.

10. A vehicle testing device, characterized in that: The vehicle testing equipment is applied with the fire signal transceiver communication device according to any one of claims 1 to 9.

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