A relay control system and method

Abstract

This invention discloses a relay control system and method, comprising: an intelligent battery box, a controller ECU, and an engine ECM; the intelligent battery box includes a first relay, a second relay, and a third relay; the first relay is connected to the controller ECU and the engine ECM, the controller ECU is connected to the second relay, and the engine ECM is connected to the third relay; the second relay is connected to the engine's starting circuit, and the third relay is connected to the engine's preheating circuit. This invention provides corresponding operations by monitoring the coil triggering state and on-state of the relays, thereby ensuring the accurate operation of the relays and preventing electrical damage caused by relay malfunctions.

Description

Technical Field

[0001] This invention belongs to the field of engineering machinery technology, specifically relating to a relay control system and method. Background Technology

[0002] Currently, excavator control power supply, engine starting, and glow plug preheating are all controlled by relays. Traditional coil relays are commonly used. When a traditional coil relay operates, the coil needs to be continuously energized, resulting in significant heat generation. Furthermore, when a coil relay malfunctions, there is no feedback signal, requiring connection to the controller to record the signal status. However, if this malfunction occurs, power-off cannot be performed. Alternatively, if a relay coil signal failure causes continuous operation, the relay remains connected and cannot be disconnected, potentially damaging electrical components. Summary of the Invention

[0003] To address the problems existing in the prior art, the present invention provides a relay control system and system that can prevent electrical damage caused by relay failure.

[0004] The technical problem to be solved by the present invention is achieved through the following technical solution:

[0005] In a first aspect, a relay control system is provided, comprising: an intelligent electrical box, a controller ECU, and an engine ECM; the intelligent electrical box includes a first relay, a second relay, and a third relay; the first relay is connected to the controller ECU and the engine ECM, the controller ECU is connected to the second relay, and the engine ECM is connected to the third relay; the second relay is connected to the engine's starting circuit, and the third relay is connected to the engine's preheating circuit.

[0006] In conjunction with the first aspect, it further includes an electronic monitor and an in-vehicle terminal; the first relay, the second relay, and the third relay are connected to the electronic monitor and the in-vehicle terminal via a bus.

[0007] Secondly, a relay control method is provided, including:

[0008] After the main power is turned on, the system begins initialization. Within the first set time after the initialization begins, it checks whether there is a relay coil trigger signal. If there is, the relay does not operate and issues a fault alarm. If not, the system continues to complete the initialization.

[0009] If the initialization starts after the first set time, it is determined whether the first relay coil is triggered. If it is triggered, the first relay is turned on after the first delay time. If the first relay coil is not triggered, it is determined whether the second and third relay coils are triggered. If they are triggered, a fault alarm is issued and the second and third relays are disconnected. The number of disconnection operations is the first set number.

[0010] After the first relay is turned on, it is determined whether the coil of the second relay is triggered. If it is triggered, the second relay is turned on after the first delay.

[0011] After the first relay is turned on, it is determined whether the coil of the third relay is triggered. If it is triggered, the third relay is turned on after the first delay.

[0012] In conjunction with the second aspect, the first set time is further defined as 5 seconds.

[0013] In conjunction with the second aspect, furthermore, after the second relay is turned on, it is detected whether the first relay is turned on. If it is not turned on, a fault alarm is issued and the second relay is disconnected.

[0014] After the third relay is turned on, it checks whether the first relay is turned on. If it is not turned on, a fault alarm is issued and the third relay is disconnected. The disconnection operation is performed a first set number of times.

[0015] In conjunction with the second aspect, furthermore, the first set number of times is 3 to 5 times.

[0016] In conjunction with the second aspect, furthermore, if the enable state of the control signal of the second relay exceeds the first protection time after the second relay is turned on, the second relay is controlled to perform a disconnection operation and a fault alarm is triggered.

[0017] If the enable state of the control signal of the third relay exceeds the first protection time after the third relay is turned on, the third relay will be controlled to perform a disconnection operation and a fault alarm will be triggered.

[0018] In conjunction with the second aspect, the first protection time is further defined as 15 to 120 seconds.

[0019] Beneficial effects: This invention provides corresponding operations by monitoring the coil triggering state and the on state of the relay, thereby ensuring the accurate operation of the relay and preventing electrical damage caused by relay malfunctions.

[0020] Furthermore, the relay is equipped with timeout protection to prevent damage to electrical appliances caused by the relay being enabled for too long. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the system structure of the present invention;

[0022] Figure 2 This is a flowchart of the method of the present invention. Detailed Implementation

[0023] The present invention will now be described in further detail with reference to the accompanying drawings.

[0024] like Figures 1-2 As shown, the present invention provides a relay control system, including: an intelligent electrical box 101, a controller ECU 102, an engine ECM 104, an electronic monitor 103, and an on-board terminal 105. The intelligent electrical box 101 includes a first relay, a second relay, and a third relay.

[0025] The first relay is connected to the controller ECU (Electronic Control Unit) 102 and the engine ECM 104 to control the power supply of the system. The controller ECU 102 is connected to the second relay, and the engine ECM (Engine Control Module) 104 is connected to the third relay. The second relay is connected to the engine starting circuit to control the engine starting, and the third relay is connected to the engine preheating circuit to control the engine preheating.

[0026] The first, second, and third relays are connected to the electronic monitor and the vehicle terminal via a bus. The electronic monitor 103 is used to acquire and monitor relay data on-site, while the vehicle terminal is used to monitor and display relay data inside the vehicle. The intelligent electrical box 101 also includes a power module to supply power to the other modules.

[0027] When the system starts working, it reads the coil trigger signals and connection status of each relay in real time. The main power is turned on, the system wakes up and activates, and initialization begins. Within a first set time after initialization begins (set according to actual needs, usually within 5 seconds), it checks if any relay coils are triggered. If triggered, the relays are not allowed to operate, and a fault alarm is issued. This is displayed in real time via the electronic monitor 103 and the vehicle terminal 105. If initialization exceeds the first set time, it checks if the first relay is triggered. If triggered, after a first delay time (set according to needs, usually 0-120 seconds), the first relay is turned on (closed). If the first relay coil is not triggered, it checks if the second and third relay coils are triggered. If triggered, a fault alarm is issued, and the second and third relays are disconnected. The disconnection operation is performed the first set number of times (usually 3-5 times).

[0028] After the first relay is turned on, it is checked whether the coil of the second relay is triggered. If it is triggered, the second relay is turned on after the first delay. During the process of the second relay being turned on, it is checked whether the first relay is in the on state. If the first relay is not turned on, a fault alarm signal is issued and the second relay performs the disconnection operation according to the first set number of times.

[0029] In the same situation, after the first relay is turned on, it is checked whether the coil of the third relay is triggered. If it is triggered, the second relay is turned on after the first delay. During the process of the second relay being turned on, it is checked whether the first relay is in the on state. If the first relay is not turned on, a fault alarm signal is issued, and the third relay performs the disconnection operation according to the first set number of times.

[0030] In this invention, each relay is also provided with a connection timeout protection function. If the second relay is connected and the enable state of the control signal of the second relay exceeds the first protection time, the second relay is controlled to perform a disconnection operation and a fault alarm is triggered.

[0031] If the enable state of the control signal of the third relay exceeds the first protection time after the third relay is turned on, the third relay will be controlled to perform a disconnection operation and a fault alarm will be triggered.

[0032] In this invention, the fault alarms, fault status counts, and connection counts of the first, second, and third relays are all sent to the electronic monitor 102 and the vehicle terminal 105 for display.

[0033] This invention is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart illustrations and / or block diagrams. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0034] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0035] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1The steps of the function specified in one or more boxes.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the specific implementation of the present invention. Any modifications or equivalent substitutions that do not depart from the spirit and scope of the present invention should be covered within the protection scope of the claims of the present invention.

Claims

1. A relay control system characterized by comprising: include: The system includes an intelligent electrical box, a controller ECU, and an engine ECM; the intelligent electrical box includes a first relay, a second relay, and a third relay; the first relay is connected to the controller ECU and the engine ECM, the controller ECU is connected to the second relay, and the engine ECM is connected to the third relay; the second relay is connected to the engine's starting circuit, and the third relay is connected to the engine's preheating circuit. It also includes an electronic monitor and an in-vehicle terminal; the first relay, the second relay, and the third relay are connected to the electronic monitor and the in-vehicle terminal via a bus; After the main power is turned on, the system begins initialization. Within the first set time after the initialization begins, it checks whether there is a relay coil trigger signal. If there is, the relay does not operate and issues a fault alarm. If not, the system continues to complete the initialization. If the initialization starts after the first set time, it is determined whether the first relay coil is triggered. If it is triggered, the first relay is turned on after the first delay time. If the first relay coil is not triggered, it is determined whether the second and third relay coils are triggered. If they are triggered, a fault alarm is issued and the second and third relays are disconnected. The number of disconnection operations is the first set number. After the first relay is turned on, it is determined whether the coil of the second relay is triggered. If it is triggered, the second relay is turned on after the first delay. After the first relay is turned on, it is determined whether the coil of the third relay is triggered. If it is triggered, the third relay is turned on after the first delay.

2. A relay control method, characterized in that, include: After the main power is turned on, the system begins initialization. Within the first set time after the initialization begins, it checks whether there is a relay coil trigger signal. If there is, the relay does not operate and issues a fault alarm. If not, the system continues to complete the initialization. If the initialization starts after the first set time, it is determined whether the first relay coil is triggered. If it is triggered, the first relay is turned on after the first delay time. If the first relay coil is not triggered, it is determined whether the second and third relay coils are triggered. If they are triggered, a fault alarm is issued and the second and third relays are disconnected. The number of disconnection operations is the first set number. After the first relay is turned on, it is determined whether the coil of the second relay is triggered. If it is triggered, the second relay is turned on after the first delay. After the first relay is turned on, it is determined whether the coil of the third relay is triggered. If it is triggered, the third relay is turned on after the first delay.

3. The relay control method according to claim 2, characterized in that, The first set time is 5 seconds.

4. The relay control method according to claim 2, characterized in that, After the second relay is turned on, it checks whether the first relay is turned on. If it is not turned on, a fault alarm is issued and the second relay is disconnected. After the third relay is turned on, it checks whether the first relay is turned on. If it is not turned on, a fault alarm is issued and the third relay is disconnected. The disconnection operation is performed a first set number of times.

5. The relay control method according to claim 4, characterized in that, The first set number of times is 3 to 5 times.

6. The relay control method according to claim 2, characterized in that, If the enable state of the control signal of the second relay exceeds the first protection time after the second relay is turned on, the second relay will be controlled to perform a disconnection operation and a fault alarm will be triggered. If the enable state of the control signal of the third relay exceeds the first protection time after the third relay is turned on, the third relay will be controlled to perform a disconnection operation and a fault alarm will be triggered.

7. The relay control method according to claim 6, characterized in that, The first protection time is 15 to 120 seconds.

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