Keyless start-stop control device and method

Abstract

According to the keyless start-stop control device and method, wake-up of a start-stop controller, wake-up of a power system controller and shutdown are achieved through a first operation switch, the start-stop controller conducts verification after wake-up, the switch end of a first controllable switch is controlled, and the start-stop controller is started after wake-up; after the switch end of the first operation switch and the switch end of the first controllable switch are closed, starting is controlled through the second operation switch, key-free starting and stopping control is effectively achieved, the switch end of the first controllable switch can be controlled to be disconnected after starting, and secondary starting is effectively prevented.

Description

Technical Field

[0001] The invention relates to a keyless start-stop control device and method, and belongs to the field of engineering machinery. Background Art

[0002] As a multifunctional small-sized construction machinery, the backhoe loader integrates the characteristics of traditional excavators and traditional loaders. With the development of electronic technology, the market has higher and higher demands for intelligent engineering machinery products and the convenience and safety of use. The keyless start and stop function has been increasingly demanded and welcomed by the market, but the existing backhoe loaders have not yet realized the keyless start and stop function. Summary of the invention

[0003] The present invention provides a keyless start-stop control device and method, which solves the problems disclosed in the background technology.

[0004] According to one aspect of the present disclosure, there is provided a keyless start-stop control device, comprising a first operating switch, a second operating switch, a start-stop controller and a first controllable switch; The switch ends of the first operating switch, the second operating switch and the first controllable switch are connected in series in sequence to the power circuit of the power system start end; the on and off of the first operating switch also controls the on and off of the power circuit of the start-stop controller wake-up end and controls the on and off of the power circuit of the power system controller wake-up / stop end; When the wake-up end of the start controller is powered on, the start controller performs verification based on the preset verification instruction. If the verification passes, the switch end of the first controllable switch is controlled to be closed; when the start end of the power system is powered on and the power system is started, the start controller controls the switch end of the first controllable switch to be disconnected.

[0005] Furthermore, if the first operating switch includes only a pair of contacts, the device also includes a second controllable switch and a third controllable switch, the switch end of the second controllable switch is connected in series in the power-on circuit of the wake-up end of the start-stop controller, the switch end of the third controllable switch is connected in series in the power-on circuit of the wake-up / stop end of the power system controller, and the control ends of the second controllable switch and the third controllable switch are both connected to the power supply through the first operating switch.

[0006] Furthermore, if the first operating switch includes at least two pairs of contacts, the moving contacts in the contact pairs are linked, and the device also includes a second controllable switch, the switch end of the second controllable switch is connected in series in the power-on circuit of the wake-up end of the start-stop controller, the control end of the second controllable switch is connected to the power supply through a pair of contacts, and the wake-up / stop end of the power system controller is connected to the power supply through another pair of contacts.

[0007] Furthermore, a freewheeling diode and a freewheeling resistor are connected in parallel at both ends of the control end of the second controllable switch.

[0008] Furthermore, two ends of the control end of the second controllable switch are connected in parallel with light emitting diodes.

[0009] Furthermore, the first operating switch and the second operating switch are implemented using the same knob switch. When the knob switch is rotated to a first preset position, both the first operating switch and the second operating switch are disconnected. When the knob switch is rotated to a second preset position, the first operating switch is closed and the second operating switch is disconnected. When the knob switch is rotated to the second preset position, both the first operating switch and the second operating switch are closed.

[0010] According to another aspect of the present disclosure, a keyless start-stop control method is provided, which is implemented using the keyless start-stop control device described above, and the method includes a start control method and a stop control method; Startup control methods include: The first operating switch is closed, the wake-up terminal of the start controller is energized, and the wake-up / stop terminal of the power system controller is energized; After the start controller wake-up end is powered on, the start controller performs verification based on a preset verification instruction. If the verification passes and the vehicle is not in a restricted start state, the switch end of the first controllable switch is controlled to close, and the second operating switch is closed, and the power system start end is powered on; When the power system start-up end is powered on and the power system is started, the start-up controller controls the switch end of the first controllable switch to be disconnected; Shutdown control methods include: Disconnect the first operating switch, the wake-up terminal of the startup controller is powered off, and the wake-up / stop terminal of the power system controller is powered off.

[0011] Furthermore, the verification performed in the startup controller is a verification of the operator's qualifications.

[0012] The beneficial effects achieved by the present invention are as follows: the present invention realizes wake-up of the start-stop controller, wake-up of the power system controller and shutdown through the first operating switch, starts the controller for verification after wake-up, controls the switch end of the first controllable switch, and after the first operating switch and the switch end of the first controllable switch are closed, controls the start-up through the second operating switch, effectively realizes keyless start-stop control, and after starting, controls the switch end of the first controllable switch to be disconnected, effectively preventing secondary starting. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The first circuit diagram of the keyless start-stop control device; Figure 2 The second circuit diagram of the keyless start-stop control device; Figure 3 This is the circuit diagram of the normally closed contact of the locking relay; Figure 4A first structural diagram of a first operating switch and a second operating switch; Figure 5 A second structural diagram of the first operating switch and the second operating switch; Figure 6 It is the main flow chart of the keyless start-stop control method; Figure 7 The figure is a detailed flow chart of the keyless start-stop control method. DETAILED DESCRIPTION

[0014] The following will be combined with the drawings in the embodiments of the present disclosure to clearly and completely describe the technical solutions in the embodiments of the present disclosure. It is obvious that the described embodiments are only part of the embodiments of the present disclosure, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present disclosure and its application or use. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present disclosure.

[0015] Unless specifically stated otherwise, the relative arrangement of components and steps, the numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present disclosure.

[0016] At the same time, it should be understood that for the convenience of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship.

[0017] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0018] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0019] It should be noted that similar symbols and letters refer to similar items in the following figures, and therefore, once an item is defined in one figure, it does not require further discussion in subsequent figures.

[0020] At the same time, in the description of the embodiments of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance. Therefore, the features defined as "first" or "second" may explicitly or implicitly include one or more features.

[0021] In order to solve the problem that the existing excavator loaders have not yet realized the keyless start-stop function, the present disclosure proposes a keyless start-stop control device, which specifically realizes the start-stop function through an operating switch, and the device at least includes a first operating switch, a second operating switch, a start-stop controller and a first controllable switch; wherein the switch ends of the first operating switch, the second operating switch and the first controllable switch are connected in series in sequence to the power-on circuit of the power system starting end; the on-off of the first operating switch also controls the on-off of the power-on circuit of the start-stop controller wake-up end, and controls the on-off of the power-on circuit of the power system controller wake-up / stop end; when the start controller wake-up end is powered on, the start controller performs verification based on a preset verification instruction, and if the verification passes, controls the switch end of the first controllable switch to be closed; when the power system starting end is powered on and the power system is started, the start controller controls the switch end of the first controllable switch to be disconnected.

[0022] It should be noted that the first operating switch and the second operating switch can be implemented by a toggle switch, see Figure 5 Each button switch corresponds to an operating switch, and turning the button switch can turn the corresponding operating switch on and off.

[0023] Of course, in some embodiments, the first operating switch and the second operating switch can be implemented using the same knob switch. When the knob switch is rotated to the first preset position, the first operating switch and the second operating switch are both disconnected. When the knob switch is rotated to the second preset position, the first operating switch is closed and the second operating switch is disconnected. When the knob switch is rotated to the second preset position, the first operating switch and the second operating switch are both closed.

[0024] For details, please refer to Figure 4 The knob switch has three gears. In gear 0, the first operating switch and the second operating switch are both disconnected. In gear 1, the first operating switch is closed and the second operating switch is disconnected. In gear 2, both the first operating switch and the second operating switch are closed. The knob switch is easier to operate than the toggle switch.

[0025] It should be noted that the first operating switch structure can be a single-pole switch or a multi-pole switch. Different switch structures also have certain differences in the circuits of the device, as follows: If the first operating switch includes only a pair of contacts, the device also includes a second controllable switch and a third controllable switch, the switch end of the second controllable switch is connected in series in the power-on circuit of the wake-up end of the start-stop controller, the switch end of the third controllable switch is connected in series in the power-on circuit of the wake-up / stop end of the power system controller, and the control ends of the second controllable switch and the third controllable switch are both connected to the power supply through the first operating switch.

[0026] For details, please refer to Figure 2, including a power supply, a first operating switch, a second operating switch, a first controllable switch, a second controllable switch, a third controllable switch, and a start-stop controller. The negative electrode of the power supply is grounded, and the positive electrode of the power supply is respectively connected to the normal power supply end of the start-stop controller, one end of the switch end of the second controllable switch, one end of the first operating switch, and one end of the switch end of the third controllable switch. The other end of the switch end of the second controllable switch is connected to the wake-up end of the start-stop controller. The other end of the first operating switch is respectively grounded through the control end of the second controllable switch and the control end of the third controllable switch. The other end of the first operating switch is also connected to the power system start end through the second operating switch and the switch end of the first controllable switch in sequence. One end of the switch end of the third controllable switch is connected to the wake-up / stop end of the power system controller.

[0027] The starting process is as follows: the first operating switch is closed, the control ends of the second controllable switch and the third controllable switch are energized, the switch ends of the second controllable switch and the third controllable switch are closed, that is, the wake-up end of the start-stop controller is energized, the vehicle ACC is energized, the power system controller wake-up / stop end is energized, and the starting controller performs verification based on the preset verification instruction. If the verification passes, the switch end of the first controllable switch is controlled to be closed, and the second operating switch is further closed. At this time, the power system starting end is energized. When the power system starting end is energized and the power system is started, the starting controller controls the switch end of the first controllable switch to be disconnected, so that the operator cannot start the power system, and the vehicle's driving and working device control systems are also in a locked state and cannot be operated, effectively preventing secondary starting.

[0028] It should be noted that the verification here is the verification of the operator's qualifications, such as first performing operator qualification authentication through methods such as passwords, biometrics, electronic induction keys, etc. After the qualification authentication, the start-stop controller activates the vehicle control system to put the vehicle in a standby state. If the vehicle control system detects that there are no other restricted start conditions such as neutral gear protection and anti-secondary start, that is, the vehicle is not in a restricted start state, the switch end of the first controllable switch can be controlled to close.

[0029] The shutdown process is as follows: directly disconnect the first operating switch, the start-stop controller wake-up end loses power, the power system controller wake-up / stop end loses power, and the power system start end loses power. The power system and the start-stop controller both enter the sleep state after the configuration program (such as sleeping after 30 seconds), and the shutdown is completed.

[0030] In some embodiments, when power is lost, in order to protect sensitive components in the circuit, a freewheeling diode and a freewheeling resistor are connected in parallel at both ends of the control end of the second controllable switch. In order to indicate the power-on and power-off conditions, a light-emitting diode is connected in parallel at both ends of the control end of the second controllable switch. The light-emitting diode lights up when the power is on and goes out when the power is off.

[0031] See also Figure 2The other end of the first operating switch is connected to the positive electrode of the light emitting diode through a current limiting resistor, the negative electrode of the light emitting diode is grounded, the freewheeling resistor is connected in parallel with the light emitting diode, and the freewheeling diode is connected in reverse parallel with the light emitting diode. When the first operating switch is disconnected and the ACC of the vehicle is powered off, the inductive current at the control end of the second controllable switch is controlled by the freewheeling diode and the freewheeling resistor to suppress the induced voltage, protect the sensitive electronic components in the circuit, and the light emitting diode is turned off to indicate that the vehicle is powered off.

[0032] If the first operating switch includes at least two pairs of contacts, the moving contacts in the contact pairs are linked, and the device also includes a second controllable switch, the switch end of the second controllable switch is connected in series in the power-on circuit of the wake-up end of the start-stop controller, the control end of the second controllable switch is connected to the power supply through a pair of contacts, and the wake-up / stop end of the power system controller is connected to the power supply through another pair of contacts.

[0033] Assuming that the first operating switch has two pairs of contacts, which are defined as the first pair of contacts and the second pair of contacts, the circuit of the device can be specifically referred to. Figure 1 , including a power supply, a first operating switch, a second operating switch, a first controllable switch, a second controllable switch, and a start-stop controller. The negative pole of the power supply is grounded, and the positive pole of the power supply is respectively connected to the normal power supply end of the start-stop controller, one end of the switch end of the second controllable switch, one end of the first pair of contacts of the first operating switch, and one end of the second pair of contacts of the first operating switch. The other end of the switch end of the second controllable switch is connected to the wake-up end of the start-stop controller, the other end of the first pair of contacts of the first operating switch is grounded through the control end of the second controllable switch, the other end of the first pair of contacts of the first operating switch is also connected to the power system start end through the second operating switch and the switch end of the first controllable switch in sequence, and the other end of the second pair of contacts of the first operating switch is connected to the wake-up / stop end of the power system controller.

[0034] The starting process is as follows: the first operating switch is closed, the control end of the second controllable switch is energized, and the switch end of the second controllable switch is closed, that is, the wake-up end of the start-stop controller is energized, the vehicle ACC is energized, and the power system controller wake-up / stop end is energized. The starting controller performs verification based on the preset verification instruction. If the verification passes, the switch end of the first controllable switch is controlled to be closed, and the second operating switch is further closed. At this time, the power system starting end is energized. When the power system starting end is energized and the power system is started, the starting controller controls the switch end of the first controllable switch to be disconnected, so that the operator cannot start the power system, and the vehicle's driving and working device control systems are also in a locked state and cannot be operated, effectively preventing secondary starting.

[0035] The shutdown process is as follows: directly disconnect the first operating switch, the start-stop controller wake-up end loses power, the power system controller wake-up / stop end loses power, and the power system start end loses power. The power system and the start-stop controller both enter the sleep state after the configuration program to complete the shutdown.

[0036] and Figure 2 Similarly, when power is lost, in order to protect sensitive components in the circuit, a freewheeling diode and a freewheeling resistor are connected in parallel at both ends of the control end of the second controllable switch. In order to indicate the power-on and power-off conditions, a light-emitting diode is connected in parallel at both ends of the control end of the second controllable switch. The light-emitting diode lights up when the power is on and goes out when the power is off.

[0037] It should be noted that all controllable switches can adopt relays. When the coil of the relay is energized, the contacts are closed, that is, the controlled switch is closed. When the coil of the relay is de-energized, the contacts are opened, that is, the controlled switch is opened. For the convenience of distinction, the first controllable switch, the second controllable switch and the third controllable switch can be named locking relay, main power switch relay and ECM wake-up relay respectively.

[0038] Depending on the application scenario, the relay can use normally open contacts or normally closed contacts. If the normally open contacts are used, the drive contacts are attracted when a connection is required. If the normally closed contacts are used, the drive contacts are released and closed when a connection is required. Figure 3 Taking the locking relay as an example, if a normally open contact is used, when starting is allowed, the start-stop controller outputs a drive signal, that is, the coil is energized, and the drive contact is attracted; if a normally closed contact is used, when starting is allowed, the start-stop controller outputs a drive signal, that is, the coil is energized, and the drive contact is released and closed.

[0039] It should be noted that the start-stop controller can adopt an intelligent terminal with a touch screen, and be equipped with a normal power supply interface, a wake-up interface, a start lock control interface, an I / O port, a communication interface, a camera interface and a fingerprint recognition interface; among them, the normal power supply interface is the normal power input end, the wake-up interface is the wake-up end, which connects the main power switch relay, the start lock control interface is the interface for controlling the ECM wake-up relay, the I / O port can input some status parameters, such as the status parameters of whether the power system is started, the communication interface interacts with the whole machine controller, the camera interface can input faces for biometric recognition, the fingerprint recognition interface can input fingerprints for biometric recognition, the touch screen can input passwords, and interactive operations, etc.

[0040] The above-mentioned device realizes the wake-up of the start-stop controller, the wake-up of the power system controller and the shutdown through the first operating switch, starts the controller for verification after wake-up, controls the switch end of the first controllable switch, and after the first operating switch and the switch end of the first controllable switch are closed, controls the start through the second operating switch, effectively realizes the keyless start-stop control, and after starting, the switch end of the first controllable switch will be controlled to be disconnected, effectively preventing secondary starting.

[0041] See also Figure 6 , Figure 6This is a main flow chart of a keyless start-stop method implemented using the above device, which at least includes a start control method and a stop control method.

[0042] The process of starting the control method can be as follows: 1) Close the first operating switch to energize the wake-up terminal of the starter controller and the wake-up / stop terminal of the power system controller.

[0043] 2) After the wake-up end of the start-up controller is powered on, the start-up controller performs verification based on a preset verification instruction. If the verification passes, the switch end of the first controllable switch is controlled to be closed, and the second operating switch is closed, and the start-up end of the power system is powered on.

[0044] It should be noted that the verification includes the operator qualification authentication and the start restriction condition verification performed in sequence. The operator qualification authentication can be performed first through a password, biometrics, electronic sensing key, etc. After passing the qualification authentication, the start controller activates the vehicle control system through the communication bus or I / O port to put the vehicle in a standby state. If the vehicle control system detects that there are no other conditions that restrict start-up such as neutral gear protection and anti-secondary start-up, that is, the vehicle is not in a restricted start-up state, the switch end of the first controllable switch can be controlled to close.

[0045] 4) When the power system starting end is powered on and the power system is started, the starting controller controls the switch end of the first controllable switch to be disconnected.

[0046] When the operator needs to shut down the vehicle or encounters an emergency situation and needs to cut off the power output of the entire vehicle, shutdown control is performed. The process of the shutdown control method can be as follows: disconnect the first operating switch, start the controller's wake-up end to cut off power, and power the power system controller's wake-up / stop end to cut off power, thereby controlling the power system to shut down.

[0047] by Figure 1 For example, the control process is described in detail. Figure 7 , specifically as follows: S1) operate the first operating switch to close; S2) The main power switch relay is closed, the ACC is powered on normally, the start-stop controller wakes up, the power system controller wakes up, and is in standby state. The LED lights up, the vehicle system is in a locked state, and the operator is allowed to control the vehicle, lamps and other auxiliary devices; S3) Verify the operator's qualifications. If the verification is successful, go to S4); if the verification is unsuccessful, perform subsequent control according to actual needs, such as shutdown control, that is, go to S8). Of course, the operator can also be replaced for re-verification; S4) The start-stop controller activates the vehicle control system through the communication bus or I / O port, and the vehicle control system is in standby mode; S5) The vehicle control system determines whether there are other start restriction conditions, that is, whether the vehicle is in a start restriction state. If not, the locking relay is controlled to be unlocked and the process goes to S6); if yes, the locking relay is controlled to be in a locked state, and the power system start device will not be triggered. Subsequent control is performed according to actual needs, such as shutdown control, that is, the process goes to S8); S6) Control the switch end of the locking relay to close, and operate the second operating switch to close. If both are closed, the power system starting device is triggered and the power system starts. Otherwise, the power system starting device is not triggered, and subsequent control is performed according to actual needs, such as shutdown control, that is, transfer to S8); S7) When the power system start end is powered on and the power system is started, the start controller controls the switch end of the locking relay to be disconnected, and the vehicle control system and auxiliary devices are working normally, that is, the start is successful; when the operator needs to stop the vehicle or needs to cut off the power output of the vehicle in an emergency, go to S8; S8) The first operating switch is turned off, the wake-up end of the start controller is powered off, the light emitting diode is turned off, and the wake-up / stop end of the power system controller is powered off, thereby controlling the power system to shut down and cut off the power output. The start controller and the power system controller enter the sleep state after the configuration program (such as sleeping after 30 seconds), and the shutdown is completed.

[0048] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A keyless start-stop control device, characterized in that: It includes a first operating switch, a second operating switch, a start-stop controller and a first controllable switch; The switch ends of the first operating switch, the second operating switch and the first controllable switch are connected in series in sequence to the power circuit of the power system start end; the on and off of the first operating switch also controls the on and off of the power circuit of the start-stop controller wake-up end and controls the on and off of the power circuit of the power system controller wake-up / stop end; When the wake-up end of the start controller is powered on, the start controller performs verification based on the preset verification instruction. If the verification passes, the switch end of the first controllable switch is controlled to be closed; when the start end of the power system is powered on and the power system is started, the start controller controls the switch end of the first controllable switch to be disconnected.

2. The device according to claim 1, characterized in that If the first operating switch includes only a pair of contacts, the device also includes a second controllable switch and a third controllable switch, the switch end of the second controllable switch is connected in series in the power-on circuit of the wake-up end of the start-stop controller, the switch end of the third controllable switch is connected in series in the power-on circuit of the wake-up / stop end of the power system controller, and the control ends of the second controllable switch and the third controllable switch are both connected to the power supply through the first operating switch.

3. The device according to claim 1, characterized in that If the first operating switch includes at least two pairs of contacts, the moving contacts in the contact pairs are linked, and the device also includes a second controllable switch, the switch end of the second controllable switch is connected in series in the power-on circuit of the wake-up end of the start-stop controller, the control end of the second controllable switch is connected to the power supply through a pair of contacts, and the wake-up / stop end of the power system controller is connected to the power supply through another pair of contacts.

4. The device according to claim 2 or 3, characterized in that A freewheeling diode and a freewheeling resistor are connected in parallel at both ends of the control end of the second controllable switch.

5. The device according to claim 2 or 3, characterized in that: Both ends of the control end of the second controllable switch are also connected in parallel with light emitting diodes.

6. The device according to claim 1, characterized in that The first operating switch and the second operating switch are implemented using the same knob switch. When the knob switch is rotated to the first preset gear position, the first operating switch and the second operating switch are both disconnected. When the knob switch is rotated to the second preset gear position, the first operating switch is closed and the second operating switch is disconnected. When the knob switch is rotated to the second preset gear position, the first operating switch and the second operating switch are both closed.

7. A keyless start-stop control method, characterized in that: The method is implemented by the device according to any one of claims 1 to 6, wherein the method includes a startup control method and a shutdown control method; Startup control methods include: The first operating switch is closed, the wake-up terminal of the start controller is energized, and the wake-up / stop terminal of the power system controller is energized; After the start controller wake-up end is powered on, the start controller performs verification based on a preset verification instruction. If the verification passes and the vehicle is not in a restricted start state, the switch end of the first controllable switch is controlled to close, and the second operating switch is closed, and the power system start end is powered on; When the power system start-up end is powered on and the power system is started, the start-up controller controls the switch end of the first controllable switch to be disconnected; Shutdown control methods include: Disconnect the first operating switch, the wake-up terminal of the startup controller is powered off, and the wake-up / stop terminal of the power system controller is powered off.

8. The method according to claim 7, characterized in that The verification performed in the startup controller is a verification of the operator's qualifications.

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