CN104554144A - Emergency unlocking method, device and system - Google Patents

Abstract

The invention provides an emergency unlocking method, a device and a system. When a vehicle is in an unlocking state but a monitoring center cannot unlock the vehicle remotely, a user can call the monitoring center to obtain an unlocking password and input the unlocking password into an engine controller, the engine controller verifies whether the unlocking password is in an unlocking password unlocking group which is pre-stored in the engine controller after the engine controller receives the unlocking password, and the unlocking password is correct if the unlocking password exists in the engine controller, therefore the vehicle can be allowed to drive freely during the preset time and can be conveniently driven out a dangerous area under the control of a user. Therefore, an aim of carrying out unlocking emergency on the vehicle under the condition that the remote unlocking is out of work can be achieved so as to prevent casualties and accidents.

Description

An emergency unlocking method, device and system

technical field

The present invention relates to the field of communication technology, in particular to an emergency unlocking method, device and system.

Background technique

Many of the complex and expensive large engineering vehicles and high-end commercial vehicles currently in use are equipped with on-board monitoring devices. One end of the on-board monitoring device is connected to the engine, and the other end is wirelessly connected to the monitoring center. Because the price of the vehicle is relatively expensive, in many cases it is purchased in the form of installment payment. When there is an overdue payment, the monitoring center needs to lock the car in order to recover the loan. The locking process is that the monitoring center sends a locking command to the on-board monitoring device remotely. After receiving the instruction to lock the vehicle, the vehicle-mounted monitoring device controls the engine to stop to achieve the purpose of locking the vehicle.

However, during use, it is found that the monitoring center does not know much about the situation on the construction site, and it is easy to lock the car when it cannot be locked, which will cause serious accidents. For example: when the vehicle is mining in a mine, when the vehicle is turning with a full bucket of ore, if the vehicle is locked and suddenly turned off or the joystick of the whole vehicle fails, the vehicle will be in danger of tipping over. Therefore, in the above cases, the monitoring center needs to perform remote unlocking, and remote unlocking is available under normal circumstances.

However, when the vehicle is in an area with low GSM signal coverage or the on-board control device is damaged, the monitoring center cannot communicate with the on-board monitoring device. At this time, remote unlocking cannot be performed, that is, remote unlocking cannot be performed in dangerous situations. , serious accidents may occur. So there is a need for an emergency unlocking method so that the vehicle can be unlocked urgently when the remote unlocking fails, so as to avoid casualties and accidents.

Contents of the invention

The invention provides an emergency unlocking method, device and system, which can perform emergency unlocking on a vehicle when remote unlocking fails, so as to avoid casualties and accidents.

An emergency unlocking method comprising:

Receiving the unlocking password input by the user, the unlocking password is obtained by the user from the first unlocking password group of the monitoring center;

Verifying whether the unlocking password exists in a second unlocking password group, the second unlocking password group is a password that is pre-stored in the engine controller and is the same as the first unlocking password group;

If the unlocking password exists in the second unlocking password group, the emergency unlocking is successful, and the vehicle is allowed to run freely within a preset time.

Preferably, said receiving the unlock password input by the user includes:

When the user presses the preset button for a long time, the control prompt light will flash at a preset frequency, press the preset button after the prompt light flashes once to represent the input number 1, and press the preset button after the prompt light flashes twice. Set the button to represent the input number 2, and so on, press the preset button after the prompt light flashes nine times to represent the input number 9;

Receiving multiple unlock numbers input by the user one by one according to the flashing mode of the prompt light;

The combination of the plurality of unlocking numbers in sequence is used as the unlocking password.

Preferably, said receiving the unlock password input by the user includes:

Receiving multiple unlocking numbers sequentially input by the user through the display screen;

The combination of the plurality of unlocking numbers in sequence is used as the unlocking password.

Preferably, said receiving the unlock password input by the user includes:

Receive multiple unlocking numbers sequentially input by the user through the number keys;

The combination of the plurality of unlocking numbers in sequence is used as the unlocking password.

Preferably, it also includes:

After the unlocking password is used, the unlocking password is eliminated in the first unlocking password group.

Preferably, before receiving the unlock password input by the user, it also includes:

Judge the status of unlocking the car function;

When the unlocking car function is changed from closed state to active state, then according to GPS ID and fixed key, generate described second unlocking password group according to preset algorithm, described GPS ID is sent to engine controller by on-board monitoring device;

When the function of unlocking the car is changed from the activated state to the closed state, the stored second unlocking password group is cleared.

An emergency unlocking method comprising:

sending the unlocking password group in the pre-generated first unlocking password group to the user;

After the unlocking password is sent to the user, the unlocking password is deleted from the first unlocking password.

An emergency unlocking device comprising:

The receiving unit is used to receive the unlocking password input by the user, and the unlocking password is obtained by the user from the first unlocking password group in the monitoring center;

A verification unit, configured to verify whether the unlocking password exists in a second unlocking password group, the second unlocking password group is a password that is pre-stored in the engine controller and is the same as the first unlocking password group;

The driving unit is configured to make the emergency unlocking successful if the unlocking password exists in the second unlocking password group, and allow the vehicle to run freely within a preset time.

An emergency unlocking device comprising:

a sending unit, configured to send the unlocking password group in the pre-generated first unlocking password group to the user;

The second canceling unit is configured to delete the unlocking password from the first unlocking password after the unlocking password is sent to the user.

An emergency unlocking system comprising:

A monitoring center, a vehicle-mounted monitoring device wirelessly connected to the monitoring center, and an engine controller connected to the vehicle-mounted monitoring device;

The monitoring center is configured to send the unlocking password group in the pre-generated first unlocking password group to the user;

The engine controller is used to receive the unlocking password input by the user, the unlocking password is obtained by the user from the first unlocking password group in the monitoring center; verify whether the unlocking password exists in the second unlocking password group, the The second unlocking password group is pre-stored in the engine controller and is the same as the first unlocking password group; if the unlocking password exists in the second unlocking password group, the emergency unlocking is successful, and the vehicle is allowed to Travel freely within a set time.

Preferably, the monitoring center is further configured to delete the unlocking password from the first unlocking password after sending the unlocking password to the user;

The engine controller is further configured to, after the unlocking password is used, cancel the unlocking password in the first unlocking password group.

The present invention provides an emergency unlocking method, device and system. In the present invention, when the vehicle is locked but the monitoring center cannot perform remote unlocking, the user can call the monitoring center to obtain the unlocking password and input the unlocking password To the engine controller, after the engine controller receives the unlock password, it verifies whether the unlock password exists in its internal pre-stored unlock password group. If it exists, it means that the unlock password is correct. At this time, the vehicle can be allowed to drive freely within the preset time , so that the vehicle drives out of the dangerous area under the control of the user, so as to achieve the purpose of emergency unlocking of the vehicle when the remote unlocking fails, so as to avoid casualties and accidents.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is a flowchart of an emergency unlocking method disclosed in an embodiment of the present invention;

Fig. 2 is a flow chart of another emergency unlocking method disclosed in the embodiment of the present invention;

Fig. 3 is a flowchart of another emergency unlocking method disclosed in the embodiment of the present invention;

Fig. 4 is a flow chart of another emergency unlocking method disclosed in the embodiment of the present invention;

Fig. 5 is a flow chart of another emergency unlocking method disclosed in the embodiment of the present invention;

Fig. 6 is a schematic structural diagram of an emergency unlocking device disclosed in an embodiment of the present invention;

Fig. 7 is a schematic structural diagram of another emergency unlocking device disclosed in an embodiment of the present invention;

Fig. 8 is a schematic structural diagram of another emergency unlocking device disclosed in an embodiment of the present invention;

Fig. 9 is a schematic structural diagram of an emergency unlocking system disclosed in an embodiment of the present invention.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Before the present invention is implemented, at first introduce the formation process of the unlocking password inside the engine controller and monitoring center, when the user purchases the vehicle, if the vehicle dealer needs to pay in installments, the vehicle dealer will activate the unlocking car function of the on-board monitoring device, activate the unlocking car function and The password generation process is as follows:

The monitoring center of the vehicle seller pre-stores the GPS ID of the GPS module in the vehicle monitoring device and the fixed key required to calculate the unlocking password. After the monitoring center sends an activation command to the vehicle monitoring device, the monitoring center uses the GPS ID and the fixed key. Several unlocking passwords are generated according to the preset password algorithm, and the several unlocking passwords form the first unlocking password group of the monitoring center.

The monitoring center remotely sends an activation command to the vehicle to unlock the car function. There is a GPS module inside the vehicle monitoring device, and each GPS module has a unique ID. After receiving the activation command, the vehicle monitoring device sends its own GPS ID to the engine control After the engine controller obtains the GPS ID, the GPS ID is stored in its own ROM, and the engine controller stores the GPS ID in advance according to the fixed key in the ROM (the fixed key is the same as the fixed key in the monitoring center) same), generate several unlocking passwords according to the same password algorithm as the monitoring center, and several unlocking passwords form the second unlocking password group of the engine controller.

It can be seen from the above that the first unlocking code group in the monitoring center is consistent with the second unlocking code group in the engine controller, and the right to know the unlocking code group is limited to the monitoring center, and the user cannot know the content of the unlocking code group.

After the vehicle is locked by the monitoring center, when the vehicle is in an area with a low GSM signal or the on-board monitoring device is damaged, and the vehicle cannot be remotely unlocked by the monitoring center, the present invention provides the following method for emergency unlocking of the vehicle:

As shown in Figure 1, the present invention provides a kind of emergency unlocking method, and the present invention is applied to engine controller, and this method comprises:

Step S101: receiving the unlocking password input by the user, the unlocking password is obtained by the user from the first unlocking password group of the monitoring center;

After the vehicle is monitored and locked, the user asks the monitoring center for help by telephone or other means, and informs the monitoring center of the GPS ID of the vehicle, and the monitoring center finds the first GPS ID corresponding to the GPS ID in its own database based on the GPS ID. An unlock password, and select an unlock password in its first unlock password group and inform the user, after the user learns the unlock password, input it to the engine controller, and the engine controller verifies the unlock password after receiving the unlock password input by the user Is there an error.

Step S102: verify whether the unlocking password exists in the second unlocking password group, the second unlocking password group is the same password as the first unlocking password group pre-stored in the engine controller;

The second unlocking password group is pre-stored in the engine controller, and the second unlocking password group is consistent with the first unlocking password group in the monitoring center, that is, the number of unlocking passwords and the content of the unlocking password are the same, so as long as the unlocking password input by the user is Obtained by the monitoring center, and input correctly into the engine controller, the unlock password entered by the user must exist in the second unlock password group, that is, the unlock password is correct, if the unlock password entered by the user does not exist in the second unlock password group , the unlock password is wrong.

Step S103: If the unlocking password exists in the second unlocking password group, the emergency unlocking is successful, and the vehicle is allowed to travel freely within a preset time.

If the unlocking password exists in the second unlocking password group, it shows that the password input by the user is the unlocking password obtained by the monitoring center, i.e. the correct unlocking password. Set the time as the time stored in the engine controller in advance, the preset time can be 20 minutes, 40 minutes or one hour, subject to the fact that the user can move the measurement out of the dangerous area and move to the safe area within the preset time , the specific time can be pre-input into the engine controller by the technician according to the actual situation, which is not limited here.

After the vehicle is allowed to travel freely within the preset time, it will be assumed that the vehicle has moved to a safe area or an area with a good GSM signal after the preset time. At this time, the engine controller will automatically enter the lock state to prevent the user from paying the loan Continue to use the vehicle.

When there is no unlocking password in the first unlocking password group, it means that the unlocking password is wrong, and the engine controller continues to control the vehicle to be in the locked state.

The invention provides an emergency unlocking method. In the invention, when the vehicle is locked but the monitoring center cannot perform remote unlocking, the user can call the monitoring center to obtain the unlocking password, and input the unlocking password to the engine controller In the above, after the engine controller receives the unlock password, it verifies whether the unlock password exists in its internal pre-stored unlock password group. Drive out of the dangerous area under the user's control, so as to achieve the purpose of emergency unlocking of the vehicle when the remote unlocking fails, so as to avoid casualties and accidents.

In the specific use process, the number of unlocking passwords in the first unlocking password group and the second unlocking password group will not be too many, in case the user frequently uses the emergency unlocking function, the unlocking passwords can be set to 4 in actual use, so The emergency unlocking function can only be used 4 times, because there is only one time in the life of the unlocking password, and the unlocking password will be eliminated after one use, and one of the remaining 3 unlocking passwords will be used next time until it is in the unlocking password group The emergency unlock function can no longer be used after using the unlock password.

The following describes the specific execution process of step S101 in Figure 1: receiving the unlocking password input by the user, as shown in Figure 2, including the following steps:

Step S201: When the user presses the preset button for a long time, the control prompt light flashes at a preset frequency. Pressing the preset button after the prompt light flashes once means inputting the number 1. The prompt light flashes twice and then press The preset button represents the input number 2, and so on, and pressing the preset button after the prompt light flashes nine times represents the input number 9;

Among them, the preset button is a button for entering a password pre-designated by the technician, and the prompt light is a prompt for entering a password pre-designated by the technician. When the user presses the preset button for a long time, the engine controller knows that it needs to input the unlock Password, then control the prompt light to flash according to the preset frequency, for example: the prompt light flashes at intervals of two seconds, one flash represents the number 1, two flashes represents the number 2, ... and so on, nine flashes represent the number 9.

Step S202: receiving a plurality of unlocking numbers input by the user one by one according to the flashing manner of the prompt light;

For example, if the unlock password is 3216, when the prompt light flashes at a preset frequency, the user is required to record the number of times the prompt light flashes, and when the prompt light flashes three times, the user is required to press the preset button once to indicate the value of the entered number. 3. Then the reminder light continues to flash at the preset frequency and restart counting. When it flashes twice, the user needs to press the preset button again to indicate that the number entered at this time is 2, and then restart counting, and the reminder light flashes once , the user presses the preset button to indicate that the input number is 1, and then restarts counting. When the prompt light flashes six times, the user presses the preset button to indicate that the input number is 6. At this time, the unlock code is completely input to the engine inside the controller.

Step S203: Combining the multiple unlocking numbers in sequence as the unlocking password.

The engine controller combines 3, 2, 1 and 6 into a group of passwords 3216 according to the sequence of numbers input by the user, and uses 3216 as the unlocking password.

Due to the limited resources of the engine controller itself, and the frequency of emergency unlocking is very seldom, so using a preset button and a reminder light as the way to enter the unlock password can occupy a small amount of resources of the engine controller, so that the engine controller can Reserve resources for other purposes. However, this method is more prone to errors. Once the user records the wrong number of flashes of the prompt light, he needs to re-enter, and the input speed is relatively slow, and the input process of unlocking the password is completed slowly.

Therefore the present invention also provides following two kinds of input modes of unlocking password:

One way is that the engine controller receives a plurality of unlocking numbers sequentially input by the user through the display screen; and uses the sequential combination of the plurality of unlocking numbers as the unlocking password.

Specifically, the user uses the display screen connected to the engine controller to input a plurality of unlocking passwords, the display screen displays virtual keys of 0-9, and the user inputs a plurality of unlocking digital keys of the unlocking password to the engine controller by touching the virtual keys , so that the engine controller can compose the unlocking password in sequence of multiple unlocking numbers.

Another way is: the engine controller receives a plurality of unlocking numbers sequentially input by the user through the number keys; and uses the combination of the plurality of unlocking numbers in sequence as the unlocking password.

Specifically, the user uses the physical buttons connected to the engine controller to connect the physical buttons of ten numbers from 0 to 9 to the engine controller in advance, so that the user can input multiple unlocking numbers of the unlock password according to the physical buttons, and unlock multiple unlocking numbers. The numbers form the unlock code in sequence.

In addition, as shown in Figure 3, the emergency unlocking method provided by the present invention also includes:

Step S301: judging that the unlocking car function has been turned off and changed to an active state, that is, judging the state of the unlocking car function;

The engine controller judges the status of the unlocking car function. If the unlocking car function is changed from off to active, it means that the vehicle loan has not been received. After that, the monitoring center will use the unlocking car function when the user fails to pay the loan on time. When the unlocking car function From the activated state to the closed state, it means that the user has paid off the loan, and the monitoring center will not use the unlocking car function.

Step S302: When the function of unlocking the car is changed from the closed state to the active state, the second unlocking password group is generated according to the preset algorithm according to the GPS ID and the fixed key, and the GPS ID is sent to the engine controller by the vehicle monitoring device. ;

After the function of unlocking the car is changed to the activated state, the engine controller generates its own second unlock password group for use when unlocking.

Step S303: When the function of unlocking the car is changed from the activated state to the closed state, clear the stored second unlocking password group.

After the user pays off the loan, the function of unlocking the car will be remotely closed by the monitoring center. After that, the function of unlocking the car will not be used, and the engine controller will know the second unlocking password in its own database.

The above content is to introduce the process of closing and activating the unlocking car function. The following describes in detail the specific process of step S103 in Figure 1 allowing the vehicle to travel freely within a preset time, as shown in Figure 4, including:

Step S401: Taking the success of emergency unlocking as the starting point of time for allowing the vehicle to travel freely;

After the emergency unlocking is successful, the engine controller starts the timer for timing, and constantly judges whether the count value in the timer has reached the preset value.

Step S402: judging whether the free running time of the vehicle reaches the preset time;

When the count value in the counter reaches the preset value, it means that the running time of the engine controller has reached the preset time, and enter step S404. When the count value in the counter does not reach the preset value, it means that the running time of the engine controller has not reached the preset time time, go to step S403.

Step S403: If the preset time has not been reached, the vehicle is allowed to continue to travel freely;

When the running time of the engine controller has not reached the preset time, the vehicle is allowed to continue running, so that the vehicle stays away from the dangerous area under the user's control.

Step S404: enter the locked state if the preset time is reached;

If the driving time of the engine controller reaches the preset time, the engine controller is controlled to enter the locked state, and the vehicle is not allowed to travel freely, so as to prohibit the user from using the vehicle at will without paying the loan.

The above methods are the execution process of the engine control side, and the control process of the monitoring center is introduced as follows:

The present invention also provides an emergency unlocking method, which is applied to the monitoring center, as shown in Figure 5, including:

Step S501: sending the unlocking password group in the pre-generated first unlocking password group to the user;

Receive the GPS ID input by the user, and then query the database for the first unlocking password group corresponding to the current vehicle based on the GPS ID, and then send one of the unlocking passwords to the user.

Step S502: after the unlock password is sent to the user, delete the unlock password from the first unlock password.

In order to prevent the user from illegally using the previous unlock password to unlock the car next time, the unlock password will be eliminated after the unlock password is used once, so that the unlock password used each time when unlocking is a new password, preventing the user from Illegally steal passwords.

As shown in Figure 6, the present invention also provides an emergency unlocking device, which is applied to the engine controller and includes:

The receiving unit 61 is configured to receive the unlocking password input by the user, and the unlocking password is obtained by the user from the first unlocking password group of the monitoring center;

A verification unit 62, configured to verify whether the unlocking password exists in a second unlocking password group, the second unlocking password group is a password that is pre-stored in the engine controller and is the same as the first unlocking password group;

The driving unit 63 is configured to make the emergency unlocking successful if the unlocking password exists in the second unlocking password group, and allow the vehicle to run freely within a preset time.

In addition, as shown in Figure 7, an emergency unlocking device provided by the present invention further includes the following units:

The first canceling unit 64: After the unlocking password is used, cancel the unlocking password in the first unlocking password group;

State judging unit 65, is used for judging the state of unlocking car function; When unlocking car function is changed into activated state by closing state, then according to GPS ID and fixed key, generate described second unlocking password group according to preset algorithm, described GPS The ID is sent to the engine controller by the vehicle-mounted monitoring device; when the unlocking function is changed from the active state to the closed state, the stored second unlocking password group is cleared.

As shown in Figure 8, the present invention also provides an emergency unlocking device, which is applied to the monitoring center and includes:

A sending unit 81, configured to send the unlocking password group in the pre-generated first unlocking password group to the user;

The second canceling unit 82 is configured to delete the unlocking password from the first unlocking password after the unlocking password is sent to the user.

The invention provides an emergency unlocking device. In the invention, when the vehicle is locked but the monitoring center cannot perform remote unlocking, the user can call the monitoring center to obtain the unlocking password, and input the unlocking password to the engine controller In the above, after the engine controller receives the unlock password, it verifies whether the unlock password exists in its internal pre-stored unlock password group. Drive out of the dangerous area under the user's control, so as to achieve the purpose of emergency unlocking of the vehicle when the remote unlocking fails, so as to avoid casualties and accidents.

As shown in Figure 9, the present invention also provides an emergency unlocking system, including:

A monitoring center 100, a vehicle-mounted monitoring device 200 wirelessly connected to the monitoring center 100, and an engine controller 300 connected to the vehicle-mounted monitoring device 200;

The monitoring center 100 is configured to send the unlocking password group in the pre-generated first unlocking password group to the user;

The engine controller 300 is configured to receive the unlocking password input by the user, the unlocking password is obtained by the user from the first unlocking password group of the monitoring center; verify whether the unlocking password exists in the second unlocking password group, The second unlocking password group is pre-stored in the engine controller and is the same as the first unlocking password group; if the unlocking password exists in the second unlocking password group, the emergency unlocking is successful, and the vehicle is allowed to Run freely for a preset time.

In addition, the monitoring center 100 is also used for eliminating the unlocking password from the first unlocking password after sending the unlocking password to the user;

The engine controller 300 is further configured to cancel the unlock code in the first unlock code group after the unlock code is used.

The invention provides an emergency unlocking system. In the invention, when the vehicle is locked but the monitoring center cannot perform remote unlocking, the user can call the monitoring center to obtain the unlocking password, and input the unlocking password to the engine controller In the above, after the engine controller receives the unlock password, it verifies whether the unlock password exists in its internal pre-stored unlock password group. Drive out of the dangerous area under the user's control, so as to achieve the purpose of emergency unlocking of the vehicle when the remote unlocking fails, so as to avoid casualties and accidents.

If the functions described in the method of this embodiment are implemented in the form of software function units and sold or used as independent products, they can be stored in a computing device-readable storage medium. Based on this understanding, the part of the embodiment of the present invention that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, which is stored in a storage medium and includes several instructions to make a A computing device (which may be a personal computer, a server, a mobile computing device or a network device, etc.) executes all or part of the steps of the methods described in various embodiments of the present invention. The aforementioned storage media include: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disk or optical disc, etc., which can store program codes. .

Each embodiment in this specification is described in a progressive manner, each embodiment focuses on the difference from other embodiments, and the same or similar parts of each embodiment can be referred to each other.

The above description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention will not be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (11)

1. An emergency unlocking method, characterized in that, comprising: Receiving the unlocking password input by the user, the unlocking password is obtained by the user from the first unlocking password group of the monitoring center; Verifying whether the unlocking password exists in a second unlocking password group, the second unlocking password group is a password that is pre-stored in the engine controller and is the same as the first unlocking password group; If the unlocking password exists in the second unlocking password group, the emergency unlocking is successful, and the vehicle is allowed to run freely within a preset time. 2. The method according to claim 1, wherein the receiving the unlock password input by the user comprises: When the user presses the preset button for a long time, the control prompt light will flash at a preset frequency, press the preset button after the prompt light flashes once to represent the input number 1, and press the preset button after the prompt light flashes twice. Set the button to represent the input number 2, and so on, press the preset button after the prompt light flashes nine times to represent the input number 9; Receiving multiple unlock numbers input by the user one by one according to the flashing mode of the prompt light; The combination of the plurality of unlocking numbers in sequence is used as the unlocking password. 3. The method according to claim 1, wherein the receiving the unlock password input by the user comprises: Receiving multiple unlocking numbers sequentially input by the user through the display screen; The combination of the plurality of unlocking numbers in sequence is used as the unlocking password. 4. The method according to claim 1, wherein the receiving the unlock password input by the user comprises: Receive multiple unlocking numbers sequentially input by the user through the number keys; The combination of the plurality of unlocking numbers in sequence is used as the unlocking password. 5. The method of claim 1, 2, 3 or 4, further comprising: After the unlocking password is used, the unlocking password is eliminated in the first unlocking password group. 6. The method according to claim 1, 2, 3 or 4, further comprising: before receiving the unlock password input by the user: Determine the status of the unlocking car function; When the unlocking car function is changed from closed state to active state, then according to GPS ID and fixed key, generate described second unlocking password group according to preset algorithm, described GPS ID is sent to engine controller by on-board monitoring device; When the function of unlocking the car is changed from the activated state to the closed state, the stored second unlocking password group is cleared. 7. An emergency unlocking method, characterized in that, comprising: sending the unlocking password group in the pre-generated first unlocking password group to the user; After the unlocking password is sent to the user, the unlocking password is deleted from the first unlocking password. 8. An emergency unlocking device, characterized in that it comprises: The receiving unit is used to receive the unlocking password input by the user, and the unlocking password is obtained by the user from the first unlocking password group in the monitoring center; A verification unit, configured to verify whether the unlocking password exists in a second unlocking password group, the second unlocking password group is a password that is pre-stored in the engine controller and is the same as the first unlocking password group; The driving unit is configured to make the emergency unlocking successful if the unlocking password exists in the second unlocking password group, and allow the vehicle to run freely within a preset time. 9. An emergency unlocking device, characterized in that it comprises: a sending unit, configured to send the unlocking password group in the pre-generated first unlocking password group to the user; The second canceling unit is configured to delete the unlocking password from the first unlocking password after the unlocking password is sent to the user. 10. An emergency unlocking system, characterized in that it comprises: A monitoring center, a vehicle-mounted monitoring device wirelessly connected to the monitoring center, and an engine controller connected to the vehicle-mounted monitoring device; The monitoring center is configured to send the unlocking password group in the pre-generated first unlocking password group to the user; The engine controller is used to receive the unlocking password input by the user, the unlocking password is obtained by the user from the first unlocking password group in the monitoring center; verify whether the unlocking password exists in the second unlocking password group, the The second unlocking password group is pre-stored in the engine controller and is the same as the first unlocking password group; if the unlocking password exists in the second unlocking password group, the emergency unlocking is successful, and the vehicle is allowed to Travel freely within a set time. 11. The system of claim 10, wherein: The monitoring center is also used for eliminating the unlocking password from the first unlocking password after sending the unlocking password to the user; The engine controller is further configured to, after the unlocking password is used, cancel the unlocking password in the first unlocking password group.