A control method, control system, and construction machinery for automatically powering off construction machinery.

Abstract

This invention discloses a control method, control system, and the machinery for automatic power-off of construction machinery. The control method includes a main control system and an automatic power-off control system. The main control system determines the engine's operating status based on the collected engine operating signals, indicating whether the engine is in a running or stopped state. If the engine is stopped, the control system acquires a signal from the automatic power-off control system. If the main control system can acquire the signal, it acquires the system voltage and / or the operating status of the electrical equipment. If the system voltage acquired by the main control system is lower than a set voltage threshold and / or the electrical equipment has not performed any operation within a set time period, the automatic power-off control system reminds the user to start charging the entire machine and waits for the user's response. If the user does not respond within the set time, the main control system outputs a power-off command, thus controlling the entire machine to power off when the engine is not running.

Description

Technical Field

[0001] This invention relates to the field of construction machinery, and in particular to a control method, control system, and construction machinery for automatically powering off construction machinery. Background Technology

[0002] Currently, the main consideration for automatic power-off in construction machinery is to automatically cut off the battery after the engine has started, either by automatically stopping the engine at idle or by using a one-button shutdown command, thus reducing the risk of battery drain. Common automatic power-off technologies in the present invention include the following:

[0003] (1) The current idle stop function requires the engine to be started, and the engine must meet specific conditions and the duration must reach the set delay before it can automatically stop. After stopping, the power supply to the whole machine is cut off after a certain delay. (2) During engine operation, the engine can be turned off by pressing the middle button of the one-button start-stop system. The engine will be stopped by the stop relay or stop message. After stopping, the power supply to the whole machine is cut off after a certain delay. (3) During engine operation, the engine can be stopped by manually turning the "ON" to "OFF" using the external rotary switch of the one-button start. After stopping, the power supply to the whole machine is cut off after a few seconds. (4) When the whole machine is powered on but the engine is not started, the power supply to the whole machine can only be turned off by turning the "ON" to "OFF" using the external rotary switch of the one-button start. The power supply to the whole machine is cut off after a few seconds.

[0004] Based on the above description and analysis, when the machine is powered on but the engine is not started, if the user neglects to turn the external rotary switch of the one-button start from "ON" to "OFF", the generator will not work, and the electrical equipment of the machine will be in a state of continuous power supply, consuming battery power until the battery is completely depleted. This will prevent the machine from being powered on / started normally the next time, causing great inconvenience to the user. Summary of the Invention

[0005] In order to overcome at least one of the defects of the prior art, the present invention provides a control method for automatic power-off of engineering machinery. By adding an automatic power-off control system and combining it with the main control system, the method can achieve power-off of the whole machine when the whole machine is powered on but the engine is not started.

[0006] In order to overcome at least one of the defects described in the prior art, the present invention also provides a control system for automatic power-off of engineering machinery, which realizes the power-off of the whole machine when the whole machine is powered on but the engine is not started by multi-channel control of the main power relay.

[0007] In order to overcome at least one of the defects described in the prior art, the present invention also provides an engineering machine that uses the aforementioned control system, enabling the engineering machine to automatically power off when the engine is not running, thus avoiding battery power consumption.

[0008] The technical solution adopted by this invention to solve its problem is:

[0009] A control method for automatically powering down engineering machinery includes a main control system and an automatic power-down control system, wherein the automatic power-down control system is signal-connected to the main control system.

[0010] The automatic power-off control method includes the following steps:

[0011] S1. The main control system determines the engine's operating status based on the collected engine operating signals. The engine's operating status is either start-up or shutdown.

[0012] If the engine is in a stopped state, proceed to step S2;

[0013] S2. The main control system receives a signal from the automatic power-down control system;

[0014] If the main control system can obtain the signal from the automatic power-off control system, then proceed to the following step S3;

[0015] S3. The main control system acquires the system voltage and / or the operating status of the electrical equipment;

[0016] If the system voltage obtained by the main control system is lower than the system-set voltage threshold and / or the electrical equipment does not perform any operation within the set time period, proceed to the following step S4;

[0017] S4. The automatic power-off control system reminds the user to start charging the entire unit in a timely manner and waits for the user's response;

[0018] If the user does not respond within the set time, the main control system outputs a power-down command to power down the entire machine.

[0019] Furthermore, engine operating signals include crankshaft position sensor signals, camshaft position sensor signals, ignition signals, cylinder identification signals, ignition feedback signals, air flow sensor signals, vehicle speed sensor signals, oxygen sensor signals, or intake air temperature sensor signals.

[0020] Furthermore, in step S3, if the user responds within the set time, the process returns to step S1.

[0021] Furthermore, in step S2, the main control system acquires the automatic power-down control system signal;

[0022] If the main control system cannot obtain the signal from the automatic power-off control system, proceed to step S5.

[0023] S5. The main control system obtains the system voltage;

[0024] If the system voltage obtained by the main control system is lower than the system-set voltage threshold, then proceed to step S4;

[0025] If the system voltage obtained by the main control system is not lower than the system-set voltage threshold, then proceed to step S6;

[0026] S6. The system remains powered on.

[0027] Furthermore, in step S1, if the engine is in the running state of starting, then proceed to step S7.

[0028] S7. The main control system obtains that the engine has started and is in an idling state, and at the same time determines the relationship between the time the engine is in an idling state and the set time.

[0029] If the engine idling time is less than the set time, the main control system will not make any other response.

[0030] If the engine idling time is longer than the set time, proceed to step S8;

[0031] S8. Configure shutdown message for main control system;

[0032] If the shutdown message configuration is successful, proceed to step S9 and complete the automatic power-down of the entire machine;

[0033] If the shutdown message configuration fails, proceed to step S10 and complete the automatic power-down of the entire machine.

[0034] Furthermore,

[0035] S9. The main control system sends a shutdown message to the engine ECM, the engine executes the shutdown command, and then the main control system obtains and judges the relationship between the engine speed and the set speed. If the engine speed remains below the set speed for a set period of time, or the engine feedback message is a shutdown state, the main controller system sends a shutdown completion flag to the engine ECM, and then the main controller continues to send a shutdown switch message to the engine, and completes the automatic power-off of the whole machine after a set time.

[0036] Furthermore, S10. The main control system controls the shutdown relay, and then the main control system obtains and judges the relationship between the engine speed and the set speed; if the engine speed remains below the set speed for a set time period, or if the message sent by the main control system to the engine is a shutdown state, the main control system sends a shutdown completion flag to the engine ECM and automatically powers down the entire machine after a set time.

[0037] A control system for automatically powering off construction machinery is provided, which is controlled according to the aforementioned control method for automatically powering off construction machinery. The control system includes a main power switch, a battery, a key switch, an automatic stop relay, a main power relay, an automatic power-off controller, an engine stop relay, an engine controller, and a main controller. The main controller and the automatic power-off controller are connected in signal conduction. The main power switch, the battery, and the key switch are connected in series.

[0038] The automatic stop relay has a first contact, a second contact, a third contact and a fourth contact. The second contact and the third contact form a first normally open path, and the second contact and the fourth contact form a first normally closed path. The first contact is electrically connected to the electromagnet inside the automatic stop relay.

[0039] The first contact and the second contact are electrically connected to the main controller and the key switch, respectively, and the third contact and the fourth contact are electrically connected to the engine stop relay and the main power relay, respectively.

[0040] The main power relay has a fifth contact, a sixth contact, and a seventh contact. A conductive path is formed between the fifth contact and the sixth contact. The fifth contact and the sixth contact are electrically connected to the battery and the automatic power-off controller, respectively. The seventh contact is electrically connected to the electromagnet inside the main power relay. The seventh contact is also electrically connected to the fourth contact and the main controller, forming a conductive path from the fourth contact to the seventh contact.

[0041] Furthermore, the engine stop relay includes an eighth contact, a ninth contact, and a tenth contact. A conductive path is formed between the eighth contact and the ninth contact. The eighth contact is electrically connected to the key switch, the ninth contact is electrically connected to the engine controller, and the tenth contact is electrically connected to the electromagnet inside the engine stop relay.

[0042] An engineering machine includes the aforementioned control system for automatically powering down the engineering machine.

[0043] In summary, the automatic power-off control method for engineering machinery provided by this invention has the following technical effects:

[0044] By adding an automatic power-off control system to the construction machinery, the main control system receives signals from the automatic power-off control system and outputs a power-off command after certain voltage or conditions are met, controlling the entire machine to power off. This enables the construction machinery to automatically power off when the entire machine is powered on but the engine is not running. This avoids the need for manual power-off when the engine is not running, prevents situations where the entire machine is not powered off for a long time due to operator forgetfulness, avoids the problem of the entire machine failing to work due to battery depletion, and further avoids the problem of the battery being over-discharged and reducing its service life, ensuring that the entire machine's starting system is in a healthy working condition.

[0045] In summary, the automatic power-off control system for engineering machinery provided by this invention has the following technical effects:

[0046] By setting an automatic shutdown relay, the main power relay can be controlled in multiple ways, enabling the construction machinery to automatically shut down when the machine is powered on but the engine is not running. This avoids the need to manually shut down the machine when the engine is not running, prevents the machine from being left unpowered for an extended period due to operator forgetfulness, and avoids the problem of the machine failing to work due to battery depletion.

[0047] In summary, the engineering machinery provided by this invention has the following technical effects:

[0048] This construction machinery utilizes the aforementioned automatic power-off control system, enabling the machinery to automatically power off when the vehicle is powered on but the engine is not running. This prevents the battery from remaining in a working state for an extended period, thus avoiding battery depletion and ensuring the smooth operation of the machinery. Attached Figure Description

[0049] Figure 1 This is the control logic diagram of the automatic power-off control method for engineering machinery of the present invention when the engine is not started.

[0050] Figure 2 This invention provides a control logic diagram for the automatic power-off control method of engineering machinery during engine startup.

[0051] Figure 3 This is a circuit diagram of an embodiment of the automatic power-off control system for engineering machinery according to the present invention.

[0052] The meanings of the reference numerals in the attached figures are as follows:

[0053] 1. Key switch; 2. Main controller; 3. Automatic stop relay; 4. Engine stop relay; 5. Automatic power-off controller; 6. Main power relay. Detailed Implementation

[0054] To better understand and implement this invention, the technical solutions in the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings.

[0055] In the description of this invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention 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. Therefore, they should not be construed as limitations on this invention.

[0056] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0057] A control method for automatically powering down engineering machinery includes a main control system and an automatic power-down control system, wherein the automatic power-down control system is signal-connected to the main control system.

[0058] The automatic power-off control method includes the following steps:

[0059] S1. The main control system determines the engine's operating status based on the collected engine operating signals. The engine's operating status is either start-up or shutdown.

[0060] If the engine is in a stopped state, proceed to step S2.

[0061] S2. The main control system receives the signal from the automatic power-down control system.

[0062] If the main control system can obtain the signal from the automatic power-off control system, then proceed to step S3.

[0063] S3. The main control system acquires the system voltage and / or the operating status of the electrical equipment.

[0064] If the system voltage obtained by the main control system is lower than the system-set voltage threshold and / or the electrical equipment does not perform any operation within the set time period, proceed to the following step S4.

[0065] S4. The automatic power-off control system reminds the user to start charging the entire unit in a timely manner and waits for the user's response.

[0066] If the user does not respond within the set time, the main control system outputs a power-down command to power down the entire machine.

[0067] In the above solution, an automatic power-off control system is added. This system is connected to the main control system, which receives a response signal from the automatic power-off control system reminding the user to start charging the entire machine. If no response signal is received, the main control system automatically powers off the machine. This solves the problem in existing technologies where the machine cannot automatically power off when it is powered on but the engine is not running. It also effectively prevents the battery from running out of power, thus avoiding disruption to the operation of the construction machinery.

[0068] In this technical solution, the engine operating signals include crankshaft position sensor signals, camshaft position sensor signals, ignition signals, cylinder identification signals, ignition feedback signals, air flow sensor signals, vehicle speed sensor signals, oxygen sensor signals, or intake air temperature sensor signals. This facilitates the acquisition of information about the engine's operating status and avoids the problem of the entire engine shutting down during engine operation.

[0069] In this technical solution, if the user responds within the set time in step S3, the system returns to step S1. That is, after the main control system receives the user response signal from the automatic power-down control system, it indicates that the machine is about to proceed to the next step of operation and will not enter the shutdown or automatic power-down operation for the time being, so it returns to S1 to wait.

[0070] In this technical solution, in step S2, the main control system acquires the automatic power-down control system signal.

[0071] If the main control system cannot obtain the signal from the automatic power-off control system, proceed to step S5.

[0072] S5. The main control system obtains the system voltage.

[0073] If the system voltage obtained by the main control system is lower than the system-set voltage threshold, then proceed to step S4.

[0074] If the system voltage obtained by the main control system is not lower than the system-set voltage threshold, then proceed to step S6.

[0075] S6. The system remains powered on.

[0076] In this technical solution, if the engine is in the start-up state in step S1, then proceed to step S7.

[0077] S7. The main control system obtains that the engine has started and is in an idling state, and at the same time determines the relationship between the time the engine is in an idling state and the set time.

[0078] If the engine idling time is less than the set time, the main control system will not make any other response.

[0079] If the engine idling time is longer than the set time, proceed to step S8.

[0080] S8. Configure shutdown message for main control system.

[0081] If the shutdown message configuration is successful, proceed to step S9 and complete the automatic power-down of the entire machine.

[0082] If the shutdown message configuration fails, proceed to step S10 and complete the automatic power-down of the entire machine.

[0083] In this technical solution, S9. The main control system sends a shutdown message to the engine ECM, the engine executes the shutdown command, and the main control system continuously sends a shutdown flag to the engine ECM according to the engine speed value or the shutdown status fed back by the engine. Then, the main control system continues to send a shutdown switch message to the engine and completes the automatic power-off of the whole machine after a set time.

[0084] In this technical solution, S10. The main control system controls the shutdown relay, and then the main controller acquires and determines the relationship between the engine speed and the set speed. If the engine speed remains below the set speed for a set time period, or if the main control system sends a shutdown message to the engine, the main controller sends a shutdown completion flag to the engine and automatically powers off the entire machine after a set time. In this solution, if either of these conditions is met, the engine is considered to have shut down, and the main control system resets the shutdown relay signal to zero.

[0085] This technical solution discloses a control system for automatically powering off construction machinery, comprising a main power switch, a battery, a key switch, an automatic stop relay, a main power relay, an automatic power-off controller, an engine stop relay, an engine controller, and a main controller. The main controller and the automatic power-off controller are connected in signal transmission. The main power switch, the battery, and the key switch are connected in series.

[0086] The automatic stop relay has a first contact a, a second contact b, a third contact c, and a fourth contact d. The second contact b and the third contact c form a first normally open path, and the second contact b and the fourth contact d form a first normally closed path. The first contact a is electrically connected to the electromagnet inside the automatic stop relay.

[0087] The first contact a and the second contact b are electrically connected to the main controller and the key switch, respectively, and the third contact c and the fourth contact d are electrically connected to the engine stop relay and the main power relay, respectively.

[0088] The main power relay has a fifth contact e, a sixth contact f, and a seventh contact g. A conductive path is formed between the fifth contact e and the sixth contact f. The fifth contact e and the sixth contact f are electrically connected to the battery and the automatic power-off controller, respectively. The seventh contact g is electrically connected to the electromagnet inside the main power relay. The seventh contact g is also electrically connected to the fourth contact d and the main controller, forming a conductive path from the fourth contact d to the seventh contact g.

[0089] Based on the above solution, an automatic power-off controller is added to the vehicle. A switch for controlling the automatic power-off controller is added to the vehicle's dashboard, and its default state is set to "on". When starting the construction machinery, the vehicle is powered on via the key switch, but the engine is not started. At this time, if no other operation or response is performed, the vehicle will automatically power off after a certain period of time or when certain conditions are met, to prevent the battery from being depleted.

[0090] When the main controller 2 detects the power supply port, it determines the voltage value and the voltage of the entire battery.

[0091] If the system voltage drops below the set threshold or the electrical equipment (air conditioner, radio, throttle knob, operating mode, electric pilot valve) remains inactive for a set period, the automatic power-off controller 5 will prompt the user to start charging the entire unit. If the prompt does not receive a response from the user, the main controller 2 will output a power-off command. Simultaneously, it can also shut down high-power devices such as the air conditioner. After the automatic stop relay 3 is energized, its first normally open circuit closes, ensuring continuous energization. The first normally closed circuit opens, cutting off the circuit path controlling the main power relay 6 via the key switch 1. After a set delay time, the main controller 2 stops the output of the main power relay 6, completing the automatic power-off of the entire unit.

[0092] Of course, the circuit of the aforementioned automatic power-off control system for construction machinery can also automatically power off the entire vehicle while the machine is powered on and the engine is idling. In the aforementioned control system for automatic power-off of construction machinery, the engine stop relay includes an eighth contact h, a ninth contact i, and a tenth contact j. A conductive path is formed between the eighth contact h and the ninth contact i. The eighth contact h is electrically connected to the key switch, the ninth contact i is electrically connected to the engine controller, and the tenth contact j is electrically connected to the electromagnet inside the engine stop relay.

[0093] Based on the above scheme, when the machine is running and the idle stop condition is met, the main controller 2 outputs an idle stop command to the automatic stop relay 3. The automatic stop relay 3 is energized, its first normally open circuit closes, keeping it continuously energized, while its first normally closed circuit opens, cutting off the circuit path controlling the main power relay 6 from the key switch 1. Simultaneously, the engine stop relay 4 is energized, disconnecting the engine controller (ECM) and achieving automatic engine stop. After a set delay time, the main controller 2 stops outputting commands to the main power relay, completing the automatic power-down of the entire machine.

[0094] This technical solution provides a type of construction machinery, including the aforementioned automatic power-off control system. This system enables the construction machinery to automatically power off when the vehicle is powered on but the engine is not running, preventing the battery from remaining in a working state for extended periods and avoiding battery depletion that could affect the overall operation of the construction machinery.

[0095] The technical means disclosed in this invention are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this invention, and these improvements and modifications are also considered within the scope of protection of this invention.

Claims

1. A control method for automatically powering down a construction machine, characterized by, The automatic power-off control system is signal connected with the main control system; The automatic power-off control method comprises the following steps: S1. The main control system judges the running state of the engine according to the collected engine running signal, and the running state of the engine is a starting state or a shutdown state; If the running state of the engine is the shutdown state, the following step S2 is entered; S2. The main control system acquires the signal of the automatic power-off control system; If the main control system can acquire the signal of the automatic power-off control system, the following step S3 is entered; S3. The main control system acquires the system voltage and / or the working state of the electric equipment; If the system voltage acquired by the main control system is lower than the voltage threshold set by the system and / or the electric equipment does not perform any operation within the set time period, the following step S4 is entered; S4. The automatic power-off control system reminds the user to start the whole machine charging in time, and waits for the user response; If the user does not respond within the set time, the main control system outputs the power-off instruction to control the whole machine to power off.

2. The control method for automatically powering down a construction machine according to claim 1, characterized by, The engine running signal comprises a crankshaft position sensor signal, a camshaft position sensor signal, an ignition signal, a cylinder identification signal, an ignition feedback signal, an air flow sensor signal, a vehicle speed sensor signal, an oxygen sensor signal or an intake air temperature sensor signal.

3. The control method for automatically powering down a construction machine according to claim 1, characterized by, In step S3, if the user responds within the set time, the step S1 is returned.

4. The control method for automatically powering down a construction machine according to claim 1, characterized by, In step S2, the main control system acquires the signal of the automatic power-off control system; If the main control system cannot acquire the signal of the automatic power-off control system, the following step S5 is entered; S5. The main control system acquires the system voltage; If the system voltage acquired by the main control system is lower than the voltage threshold set by the system, the step S4 is entered; If the system voltage acquired by the main control system is not lower than the voltage threshold set by the system, the following step S6 is entered; S6. The system remains in the power-on state.

5. The control method for automatically powering down a construction machine according to claim 1, wherein In step S1, if the running state of the engine is the starting state, the following step S7 is entered; S7. The main control system acquires that the engine starts and is in the idle state, and simultaneously judges the relationship between the time when the engine is in the idle state and the set time; If the engine idle time is less than the set time, the main control system does not make other responses temporarily; If the engine idle time is greater than the set time, the step S8 is entered; S8. The main control system configures the shutdown message; If the shutdown message configuration is successful, the step S9 is entered, and the automatic power-off of the whole machine is completed; If the shutdown message configuration is not successful, the step S10 is entered, and the automatic power-off of the whole machine is completed.

6. The automatic power-off control method of the engineering machinery according to claim 5, wherein S9. The main control system sends the shutdown message to the engine ECM, the engine executes the shutdown instruction, then the main control system acquires and judges the relationship between the engine speed and the set speed; if the engine speed always remains lower than the set speed within the set time period, or the feedback message of the engine is the shutdown state, the main controller system sends the complete shutdown sign to the engine ECM, then the main controller continues to send the shutdown switch message to the engine, and completes the automatic power-off of the whole machine after the set time.

7. The control method of claim 5, wherein, S10. The main control system controls the stop relay, and then the main control system acquires and judges the relationship between the engine speed and the set speed; if the engine speed remains below the set speed for a set period of time, or if the message sent by the main control system to the engine is a stop state, the main control system sends a complete stop flag to the engine ECM, and completes the automatic power-off of the entire machine after a set time.

8. A control system for automatically powering down a construction machine, characterized by The control method of claim 1 to 7 is controlled, and the control system comprises a main power switch, a battery, a key switch, an automatic stop relay, a main power relay, an automatic power-off controller, an engine stop relay, an engine controller and a main controller, the main controller and the automatic power-off controller are signal on; the main power switch, the battery and the key switch are connected in series; The automatic stop relay has a first contact, a second contact, a third contact and a fourth contact, the second contact and the third contact form a first normally open path, the second contact and the fourth contact form a first normally closed path, and the first contact is electrically connected with the electromagnet in the automatic stop relay; The first contact and the second contact are electrically connected with the main controller and the key switch respectively, and the third contact and the fourth contact are electrically connected with the engine stop relay and the main power relay respectively; The main power relay has a fifth contact, a sixth contact and a seventh contact, the fifth contact and the sixth contact form a conductive path, the fifth contact and the sixth contact are electrically connected with the battery and the automatic power-off controller respectively, the seventh contact is electrically connected with the electromagnet in the main power relay, and the seventh contact is also electrically connected with the fourth contact and the main controller, and forms a conductive path from the fourth contact to the seventh contact.

9. The control system for automatic power down of a construction machine of claim 8, wherein, The engine stop relay includes an eighth contact, a ninth contact and a tenth contact, the eighth contact and the ninth contact form a conductive path, the eighth contact is electrically connected with the key switch, the ninth contact is electrically connected with the engine controller, and the tenth contact is electrically connected with the electromagnet in the engine stop relay.

10. A working machine, characterized in that The control system of claim 8 or 9 is included.

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