An alarm method and system for a continuity-type wear sensor

Abstract

This application relates to a continuity-type wear sensor alarm method and system, comprising: when the vehicle is started and driven, collecting data on the open circuit status of the brake pad alarm circuit during braking, and accumulating the number of open circuits; if the accumulated number of open circuits equals a set number, it is determined that the brake pads are worn, and a brake pad wear alarm is issued, wherein the set number is greater than one; otherwise, the accumulation continues. In this invention, after the vehicle is started and driven, the open circuit status of the brake pad alarm circuit during braking is collected. A brake pad wear alarm is only issued when the accumulated number of open circuits equals a set number. Since the set number is greater than one, not only are the number of false alarms for brake pad wear reduced, but also false alarms due to brake pad alarm circuit faults are avoided, reducing the number of times the driver needs to check the brake pads unnecessarily.

Description

Technical Field

[0001] This application relates to the automotive field, specifically to an alarm method and system for a continuity-type wear sensor. Background Technology

[0002] The most commonly used type of wear sensor is a continuity-on / off type. Its principle involves embedding a wear warning wire within the brake pad, which runs from the wheel-end brake to the instrument control unit in the driver's cab. The embedding depth is designed so that the brake pad is almost completely worn, but still retains some thickness.

[0003] When the wear alarm circuit is active, the instrument cluster controller assumes the brake pads are not yet fully worn. When the circuit breaks, the controller assumes the brake pads have worn to a preset position and will alert the driver: Brake pads are worn. The driver should then inspect the brake pads and replace them with new ones.

[0004] However, this technical solution only determines whether the brake pads have worn to the preset position by checking the continuity and disconnection of the circuit. It does not take into account that the disconnection of the worn circuit itself due to assembly, damage, or other reasons may lead to a misjudgment that the brake pads have worn to the preset position. Summary of the Invention

[0005] This application provides a continuity-type wear sensor alarm method and system, which can solve the problem in the prior art that misjudgment may occur due to the wear circuit being broken due to assembly, damage, or other reasons.

[0006] In a first aspect, embodiments of this application provide an alarm method for a continuity-type wear sensor, the alarm method comprising:

[0007] When the vehicle is started and in motion, the system collects information on the open circuit status of the brake pad alarm circuit during braking and accumulates the number of open circuits.

[0008] If the cumulative number of circuit breaks equals the set number, it is determined that the brake pads are worn, and a brake pad wear alarm is issued. The set number is greater than one.

[0009] Otherwise, continue accumulating.

[0010] In conjunction with the first aspect, in one embodiment, after the vehicle has been ignited and started, but before driving, the method further includes:

[0011] Perform a self-test on the brake pad alarm circuit;

[0012] If the brake pad alarm circuit is open, a brake pad wear circuit open alarm will be issued.

[0013] In conjunction with the first aspect, in one implementation method, a self-test is performed on the brake pad alarm circuit, specifically including:

[0014] After the vehicle is started and the set time has elapsed, determine whether the brake pad alarm circuit disconnection time has exceeded the set value.

[0015] If so, then the brake pad alarm circuit is open.

[0016] Otherwise, determine if the brake pad alarm circuit is active.

[0017] In conjunction with the first aspect, in one embodiment, after issuing a brake pad wear circuit open alarm, the method further includes:

[0018] If the vehicle is restarted, the brake pad wear circuit breakage warning will continue to be issued.

[0019] In conjunction with the first aspect, in one embodiment, after issuing a brake pad wear circuit open alarm, the method further includes:

[0020] Before the vehicle is driven, if the vehicle ignition start time exceeds the ignition start setting threshold and the brake pad alarm circuit duration exceeds the first circuit setting threshold, the brake pad wear circuit open circuit alarm will be deactivated.

[0021] In conjunction with the first aspect, in one implementation, when the vehicle is started and in motion, the open circuit status of the brake pad alarm circuit during braking is collected, and the number of open circuits is accumulated. Specific steps include:

[0022] When the vehicle is started and in motion, if a braking signal is detected, the continuity of the brake pad alarm circuit is determined.

[0023] If the brake pad alarm circuit disconnects within a set time after the brake signal is acquired, a count will be performed.

[0024] The number of circuit breaks is accumulated.

[0025] In conjunction with the first aspect, in one implementation, if the brake pad alarm circuit disconnects within a set time after the brake signal is acquired, a count is performed, specifically including:

[0026] If the brake pad alarm circuit disconnects for a set time within the set time after the brake signal is acquired, a count will be performed.

[0027] In conjunction with the first aspect, in one embodiment, after issuing a brake pad wear warning, the method further includes:

[0028] If the vehicle is restarted, the brake pad wear warning will continue to be issued.

[0029] In conjunction with the first aspect, in one embodiment, after issuing a brake pad wear warning, the method further includes:

[0030] The brake pad wear alarm will be deactivated when the duration of the brake pad alarm circuit exceeds the second channel's set threshold.

[0031] Secondly, this application provides a continuity-type wear sensor alarm system, which includes: a first module and a second module. The first module is used to collect the brake pad alarm circuit open status when the vehicle is braked after ignition and driving, and to accumulate the number of open circuits. The second module is used to compare the accumulated number of open circuits with a set number. If the accumulated number of open circuits is equal to the set number, it is determined that the brake pad is worn and a brake pad wear alarm is issued; otherwise, the accumulation continues.

[0032] The set number of times is greater than one.

[0033] The beneficial effects of the technical solutions provided in this application include:

[0034] This application provides a continuity-type wear sensor alarm method and system. After the vehicle is started and driven, the system collects information on the open circuit status of the brake pad alarm circuit during vehicle braking. A brake pad wear alarm is issued only when the cumulative number of open circuits equals a set number. Since the set number is greater than one, it not only reduces the number of false alarms for brake pad wear, but also avoids false alarms due to faults in the brake pad alarm circuit, thus reducing the number of times the driver needs to check the brake pads unnecessarily. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the alarm method for the on / off wear sensor of this application;

[0036] Figure 2 This is a schematic diagram of the self-test method in the on / off wear sensor alarm method of this application;

[0037] Figure 3 For this application Figure 1 A detailed flowchart of step 101. Detailed Implementation

[0038] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present application.

[0039] See Figures 1 to 3This application provides a continuity-type wear sensor alarm method and system, which can solve the problem in the prior art that misjudgment may occur due to the wear circuit being broken due to assembly, damage or other reasons.

[0040] The most commonly used type of wear sensor is a continuity-on / off type. Its principle involves embedding a wear warning wire within the brake pad, which runs from the wheel-end brake to the instrument control unit in the driver's cab. The embedding depth is designed so that the brake pad is almost completely worn, but still retains some thickness.

[0041] When the wear alarm circuit is active, the instrument cluster controller assumes the brake pads are not yet fully worn. When the circuit breaks, the controller assumes the brake pads have worn to a preset position and will alert the driver: Brake pads are worn. The driver should then inspect the brake pads and replace them with new ones.

[0042] However, this technical solution only determines whether the brake pads have worn to the preset position by checking the continuity and disconnection of the circuit. It does not take into account that the disconnection of the worn circuit itself due to assembly, damage, or other reasons may lead to a misjudgment that the brake pads have worn to the preset position.

[0043] To address the problem in existing technologies where false alarms can occur due to open circuits caused by wear and tear on the circuitry itself, such as during assembly or damage, this application provides, in a first aspect, a continuity-type wear sensor alarm method, which includes:

[0044] 101: When the vehicle is started and in motion, collect data on the open circuit status of the brake pad alarm circuit during braking, and accumulate the number of open circuits.

[0045] 102: If the cumulative number of circuit breaks equals the set number, it is determined that the brake pads are worn, and a brake pad wear alarm is issued. The set number is greater than one.

[0046] 103: Otherwise, continue accumulating.

[0047] In this application, by adding conditions for vehicle driving status and vehicle braking status, the system identifies when the vehicle is in a dynamic state and the service brake is engaged, that is, when the vehicle is started and driving. It collects information on the open circuit of the brake pad alarm circuit during vehicle braking. The brake pad wear alarm will only be issued when the cumulative number of open circuits equals the set number. Since the set number is greater than one, it not only reduces the number of false alarms for brake pad wear, but also avoids false alarms due to faults in the brake pad alarm circuit, and reduces the number of times the driver needs to check the brake pads unnecessarily.

[0048] More specifically, "driving" here refers to a vehicle speed greater than 0. That is, when the vehicle is started and the speed is greater than 0, the brake pad alarm circuit open circuit will be collected during vehicle braking. When the vehicle is stationary or in a stationary state, the braking operation will not cause relative movement between the brake pads and the opposing components (such as brake drums or brake discs), so the brake pad alarm circuit open circuit will not be collected during vehicle braking.

[0049] After the vehicle is started, there is a period when the vehicle speed is 0. Therefore, based on the above embodiment, in this embodiment, after the vehicle is started and before driving, the method further includes step 100, a system self-check. Therefore, after the vehicle is started, the vehicle speed also needs to be determined. When the vehicle speed is 0, step 100, the system self-check, is performed. When the vehicle speed is greater than 0, the open circuit status of the brake pad alarm circuit during vehicle braking is collected.

[0050] Step 100, the system self-test, specifically includes steps 1001 to 1002:

[0051] Step 1001: Perform a self-test on the brake pad alarm circuit.

[0052] Specifically, a self-test is performed on the brake pad warning circuit, including steps 10011 to 10013:

[0053] Step 10011: After the vehicle ignition start-up set time, determine whether the brake pad alarm circuit break time exceeds the set value;

[0054] Step 10012: If yes, then determine that the brake pad alarm circuit is open;

[0055] Step 10013: Otherwise, determine if the brake pad alarm circuit is active.

[0056] First, after the vehicle has been started for the set time and the vehicle speed is 0, the system enters the brake pad alarm circuit fault diagnosis mode. To avoid false alarms, it is necessary to determine whether the brake pad alarm circuit disconnection time exceeds the set value. If the disconnection time exceeds the set value, it indicates that the brake pad alarm circuit is disconnected; if the disconnection time does not exceed the set value, it indicates that the brake pad alarm circuit is open. Specifically, if the disconnection time is 0, it indicates that the brake pad alarm circuit is open.

[0057] In this embodiment, if the brake pad alarm circuit is open for more than 10 seconds, it is determined that the brake pad alarm circuit is open. In other embodiments, the set value can be set as needed, and this application does not limit it.

[0058] Step 1002: If the brake pad alarm circuit is open, a brake pad wear circuit open alarm will be issued.

[0059] When the brake pad alarm circuit open time exceeds the set value, it is determined that the brake pad alarm circuit is open, and a brake pad wear circuit open alarm is issued. At this time, it can be indicated by the instrument panel as "Brake pad wear circuit open", or it can be indicated by voice prompt as "Brake pad wear circuit open". In this application, there are no restrictions on the method of issuing the brake pad wear circuit open alarm.

[0060] Based on the above embodiments, in this embodiment, after issuing the brake pad wear circuit break alarm, the method further includes: if the vehicle is restarted, continuing to issue the brake pad wear circuit break alarm.

[0061] In other words, after the brake pad wear circuit breakage warning is issued, the memory mode will be activated. When the vehicle is started again, the brake pad wear circuit breakage warning will continue to be issued to prevent the vehicle from being used directly without the brake pad wear circuit being inspected and replaced.

[0062] After issuing a brake pad wear circuit break alarm, the method further includes: before the vehicle is driven, when the vehicle ignition start time exceeds the ignition start setting threshold and the brake pad alarm circuit continuity time exceeds the first continuity setting threshold, the brake pad wear circuit break alarm is deactivated.

[0063] In other words, when the vehicle speed is 0, the brake pad wear circuit break alarm will only be deactivated after the vehicle ignition start time exceeds the ignition start setting threshold and the brake pad alarm circuit duration exceeds the first circuit setting threshold. This is used to check the brake pad wear circuit again.

[0064] In this embodiment, the brake pad wear circuit breakage alarm will only be deactivated after the vehicle ignition start time exceeds 10 seconds and the brake pad alarm circuit continuity time exceeds 10 seconds. In other embodiments, the ignition start setting threshold and the first circuit setting threshold can be set as needed, and this application embodiment does not impose any limitations on them.

[0065] Furthermore, after the brake pad wear circuit break alarm is deactivated, the vehicle speed is assessed. If the vehicle speed is still 0, the system self-check can be stopped. In other words, the system self-check is performed only once before the vehicle is driven, and then the system waits for the vehicle to move, i.e., when the vehicle speed is greater than 0, to collect data on the brake pad alarm circuit breakage during braking. Alternatively, the system self-check steps can be repeated. The specific method can be selected based on the actual situation.

[0066] Based on the above embodiments, in this embodiment, when the vehicle is started and driven, the open circuit status of the brake pad alarm circuit during vehicle braking is collected, and the number of open circuits is accumulated. Specific steps include steps 1011 to 1013:

[0067] Step 1011: When the vehicle is started and in motion, if a braking signal is detected, determine whether the brake pad alarm circuit is open or closed.

[0068] Specifically, when the vehicle speed is greater than 0, the brake pad wear judgment mode is entered. If the EBC5 signal changes from 0 to 1, the continuity judgment of the brake pad alarm circuit begins. To facilitate understanding of this application by those skilled in the art, the terminology of the EBC5 signal in this application is explained as follows: The EBC5 signal is a signal defined in the SAE J1939 communication protocol, named Electronic Brake Controller 5. This signal defines the service brake activation state. Signal sources such as the driver pressing the brake pedal, operating the parking brake, and external braking requests can all control the service brake operation, which is achieved through brake pad friction deceleration.

[0069] Step 1012: If the brake pad alarm circuit is disconnected within the set time after the brake signal is acquired, then count the number of times the circuit is counted.

[0070] Specifically, if the brake pad alarm circuit is disconnected within a set time after the brake signal is acquired, a count will be performed. This includes counting if the brake pad alarm circuit is disconnected for a set time after the brake signal is acquired.

[0071] In this application, if the brake pad alarm circuit is continuously disconnected for a set period of time after the EBC5 signal changes from 0 to 1, then it is counted once.

[0072] In this embodiment, the setting time is set to 10 seconds, and the setting duration is set to 5 seconds. In other embodiments, the setting time and its magnitude can be set as needed, and this application does not impose any limitations on them.

[0073] Step 1013: Accumulate the number of circuit breaks.

[0074] Specifically, while the vehicle is in motion, steps 1011 to 1012 are repeated. If the cumulative count reaches a set number while the vehicle is started and in motion, it is determined that the brake pads are worn, and a brake pad wear alarm is issued. In this embodiment, the set number is 3 times, meaning that a brake pad wear alarm is issued when the cumulative count reaches 3 times.

[0075] Based on the above embodiments, in this embodiment, after issuing a brake pad wear alarm, the method further includes:

[0076] If the vehicle is restarted, the brake pad wear warning will continue to be issued.

[0077] In other words, after the brake pad wear warning is issued, the memory mode will be activated. When the vehicle is started again, the brake pad wear warning will continue to be issued to prevent the vehicle from being used directly without the brake pad wear circuit being inspected and replaced.

[0078] After issuing a brake pad wear circuit break alarm, the method further includes: deactivating the brake pad wear alarm when the brake pad alarm circuit duration exceeds the second path setting threshold.

[0079] In other words, after the vehicle is restarted, the brake pad wear alarm will only be deactivated when the time of the brake pad alarm circuit exceeds the second circuit's set threshold, so that the brake pad wear circuit can be checked again.

[0080] In this embodiment, the brake pad wear alarm will only exit after the vehicle has been restarted and the brake pad alarm circuit has been active for more than 10 seconds. In other embodiments, the threshold value of the second path can be set as needed, and this application does not impose any limitations on it.

[0081] Furthermore, after exiting the second path and setting the threshold, the vehicle speed is judged. If the vehicle speed is 0, a system self-check can be performed. That is, before the vehicle moves, a system self-check is performed and then the vehicle is allowed to move. When the vehicle speed is greater than 0, the brake pad alarm circuit open circuit status is collected again when the vehicle is braking.

[0082] In summary, this application's on / off wear sensor alarm method can reduce the number of false alarms for brake pads; reduce the number of times drivers need to check the friction pads unnecessarily, such as when a new car's brake pads are worn and the driver only needs to make a judgment without immediately checking the brake pads; and clearly locate whether the brake pad wear is due to a wear circuit fault, thus improving maintenance efficiency.

[0083] Secondly, this application provides a continuity-type wear sensor alarm system, which includes: a first module and a second module; the first module is used to collect the brake pad alarm circuit open status when the vehicle is started and driven, and to accumulate the number of open circuits; the second module is used to compare the accumulated number of open circuits with a set number. If the accumulated number of open circuits is equal to the set number, it is determined that the brake pad is worn and a brake pad wear alarm is issued; otherwise, the accumulation continues.

[0084] In this application, by adding conditions for vehicle driving status and vehicle braking status, the system identifies when the vehicle is in a dynamic state and the service brake is engaged, that is, when the vehicle is started and driving. It collects information on the open circuit of the brake pad alarm circuit during vehicle braking. The brake pad wear alarm will only be issued when the cumulative number of open circuits equals the set number. Since the set number is greater than one, it not only reduces the number of false alarms for brake pad wear, but also avoids false alarms due to faults in the brake pad alarm circuit, and reduces the number of times the driver needs to check the brake pads unnecessarily.

[0085] Furthermore, in some embodiments, the continuity-type wear sensor alarm system also includes a third module, which is used to perform a self-test on the brake lining alarm circuit. If the brake lining alarm circuit is open, a brake lining wear circuit open circuit alarm is issued.

[0086] Furthermore, in some embodiments, the third module is also used to determine whether the brake pad alarm circuit disconnection time exceeds a set value after the vehicle ignition start-up set time; if so, it is determined that the brake pad alarm circuit is disconnected; otherwise, it is determined that the brake pad alarm circuit is connected.

[0087] Furthermore, in some embodiments, the continuity-type wear sensor alarm system also includes a fourth module, which is used to issue a brake pad wear circuit break alarm if the vehicle is restarted after the brake pad wear circuit is issued.

[0088] Furthermore, in some embodiments, the continuity-type wear sensor alarm system further includes a fifth module, which is used to release the brake pad wear circuit break alarm after issuing a brake pad wear circuit break alarm, before the vehicle is driven, when the vehicle ignition start time exceeds the ignition start set threshold and the brake pad alarm circuit continuity time exceeds the first path set threshold.

[0089] Furthermore, in some embodiments, the first module is also used to determine whether the brake pad alarm circuit is open or closed when a braking signal is detected during vehicle ignition and driving; if the brake pad alarm circuit is closed within a set time after the brake signal is collected, a count is performed; and the number of circuit breaks is accumulated.

[0090] Furthermore, in some embodiments, the first module is also used to count if the brake pad alarm line is disconnected for a set time within a set time after the brake signal is acquired.

[0091] Furthermore, in some embodiments, the on / off wear sensor alarm system also includes a sixth module, which is used to continue issuing a brake pad wear alarm if the vehicle is restarted after the brake pad wear alarm is issued.

[0092] Furthermore, in some embodiments, the on / off wear sensor alarm system further includes a seventh module, which is used to release the brake lining wear alarm after the brake lining alarm circuit path time exceeds the second path set threshold after the seventh module issues a brake lining wear alarm.

[0093] The functions of each module in the above-mentioned on / off wear sensor alarm device correspond to the steps in the above-mentioned on / off wear sensor alarm method embodiment, and their functions and implementation processes will not be described in detail here.

[0094] Thirdly, this application provides a continuity-type wear sensor alarm device. In this application embodiment, the continuity-type wear sensor alarm device may include a processor, a memory, a communication interface, and a communication bus.

[0095] The communication bus can be of any type and is used to interconnect the processor, memory, and communication interface.

[0096] The communication interface includes input / output (I / O) interfaces, physical interfaces, and logical interfaces used for interconnecting internal components of the continuity-type wear sensor alarm device, as well as interfaces used for interconnecting the continuity-type wear sensor alarm device with other devices (such as other computing devices or user equipment). Physical interfaces can be Ethernet interfaces, fiber optic interfaces, ATM interfaces, etc.; user equipment can be displays, keyboards, etc.

[0097] Memory can be various types of storage media, such as random access memory (RAM), read-only memory (ROM), non-volatile RAM (NVRAM), flash memory, optical storage, hard disk, programmable ROM (PROM), erasable PROM (EPROM), electrically erasable PROM (EEPROM), etc.

[0098] The processor can be a general-purpose processor, which can call the on / off wear sensor alarm program stored in the memory and execute the on / off wear sensor alarm method provided in the embodiments of this application. For example, the general-purpose processor can be a central processing unit (CPU). The method executed when the on / off wear sensor alarm program is called can be referred to the various embodiments of the on / off wear sensor alarm method of this application, and will not be repeated here.

[0099] Fourthly, embodiments of this application also provide a computer-readable storage medium.

[0100] The present application provides a computer-readable storage medium storing a continuity-type wear sensor alarm program, wherein when the continuity-type wear sensor alarm program is executed by a processor, it implements the steps of the continuity-type wear sensor alarm method as described above.

[0101] The method implemented when the on / off wear sensor alarm program is executed can be referred to in the various embodiments of the on / off wear sensor alarm method of this application, and will not be repeated here.

[0102] It should be noted that the sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0103] The terms "comprising" and "having," and any variations thereof, in the specification, claims, and accompanying drawings of this application are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to such process, method, product, or apparatus. The terms "first," "second," and "third," etc., are used to distinguish different objects, etc., and do not indicate a sequence, nor do they limit "first," "second," and "third" to different types.

[0104] In the description of the embodiments of this application, terms such as "exemplary," "for example," or "for instance" are used to indicate examples, illustrations, or explanations. Any embodiment or design described as "exemplary," "for example," or "for instance" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of terms such as "exemplary," "for example," or "for instance" is intended to present the relevant concepts in a concrete manner.

[0105] In the description of the embodiments of this application, unless otherwise stated, " / " means "or". For example, A / B can mean A or B. The "and / or" in the text is merely a description of the relationship between related objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist simultaneously, and B exists alone. In addition, in the description of the embodiments of this application, "multiple" means two or more.

[0106] In some processes described in the embodiments of this application, multiple operations or steps are included in a specific order. However, it should be understood that these operations or steps may not be executed in the order they appear in the embodiments of this application, or they may be executed in parallel. The sequence number of the operation is only used to distinguish different operations, and the sequence number itself does not represent any execution order. In addition, these processes may include more or fewer operations, and these operations or steps may be executed sequentially or in parallel, and these operations or steps may be combined.

[0107] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) as described above, and includes several instructions to cause a terminal device to execute the methods described in the various embodiments of this application.

[0108] The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A method for alarming a continuity-type wear sensor, characterized in that, The alarm method for the on / off type wear sensor includes: When the vehicle is started and in motion, the system collects information on the open circuit status of the brake pad alarm circuit during braking and accumulates the number of open circuits. If the cumulative number of circuit breaks equals the set number, it is determined that the brake pads are worn, and a brake pad wear alarm is issued. The set number is greater than one. Otherwise, continue accumulating; After the vehicle is started and before it is driven, the method further includes: Perform a self-test on the brake pad alarm circuit; If the brake pad alarm circuit is open, a brake pad wear circuit open alarm will be issued. After issuing a brake pad wear circuit break alarm, the method further includes: Before the vehicle is driven, if the vehicle ignition start time exceeds the ignition start setting threshold and the brake pad alarm circuit path time exceeds the first path setting threshold, the brake pad wear circuit open circuit alarm will be deactivated. While the vehicle is started and in motion, the system collects data on the brake pad warning circuit open circuit during braking and accumulates the number of open circuits. Specific steps include: When the vehicle is started and in motion, if a braking signal is detected, the continuity of the brake pad alarm circuit is determined. If the brake pad alarm circuit disconnects within a set time after the brake signal is acquired, a count will be performed. The number of circuit breaks is accumulated; If the brake pad alarm circuit disconnects within a set time after the brake signal is acquired, a count will be performed, specifically including: If the brake pad alarm circuit disconnects for a set time within the set time after the brake signal is acquired, a count will be performed.

2. The alarm method for a continuity-type wear sensor as described in claim 1, characterized in that, Perform a self-test on the brake pad warning circuit, specifically including: After the vehicle is started and the set time has elapsed, determine whether the brake pad alarm circuit disconnection time has exceeded the set value. If so, then the brake pad alarm circuit is open. Otherwise, determine if the brake pad alarm circuit is active.

3. The alarm method for a continuity-type wear sensor as described in claim 1, characterized in that, After issuing a brake pad wear circuit break alarm, the method further includes: If the vehicle is restarted, the brake pad wear circuit breakage warning will continue to be issued.

4. The alarm method for a continuity-type wear sensor as described in claim 1, characterized in that, After issuing a brake pad wear warning, the method further includes: If the vehicle is restarted, the brake pad wear warning will continue to be issued.

5. The alarm method for a continuity-type wear sensor as described in claim 1, characterized in that, After issuing a brake pad wear warning, the method further includes: The brake pad wear alarm will be deactivated when the duration of the brake pad alarm circuit exceeds the second channel's set threshold.

6. A continuity-type wear sensor alarm system, characterized in that, It includes: The first module is used to collect information on the open circuit status of the brake pad alarm circuit during vehicle braking after the vehicle is started and driven, and to accumulate the number of open circuits. The second module compares the accumulated number of circuit breaks with the set number. If the accumulated number of circuit breaks equals the set number, it determines that the brake pads are worn and issues a brake pad wear alarm; otherwise, it continues to accumulate. The set number of times is greater than one; The first module is also used to perform a self-test on the brake pad alarm circuit after the vehicle is started and before driving; if the brake pad alarm circuit is open, a brake pad wear circuit open alarm will be issued. After the brake pad wear circuit open circuit alarm is issued, before the vehicle is driven, if the vehicle ignition start time exceeds the ignition start setting threshold and the brake pad alarm circuit continuity time exceeds the first path setting threshold, the brake pad wear circuit open circuit alarm will be deactivated. When the vehicle is started and in motion, if a braking signal is detected, the continuity of the brake pad alarm circuit is determined. If the brake pad alarm circuit is disconnected within a set time after the braking signal is acquired, a count is performed, and the number of disconnections is accumulated. It is also used to count if the brake pad alarm circuit is disconnected for a set time within a set time after the brake signal is acquired.

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