KR20230155819A - Device for Detecting Vehicle Abnormality Before Starting - Google Patents

Abstract

The present invention relates to a vehicle abnormality detection device before starting that detects liquid flowing into the housing of an electronic control device or detects abnormal operation of the brake motor even when the engine is turned off. According to one form of the present invention, the housing ; A circuit board installed in the housing; a control unit provided on the circuit board, connected to an operating unit located outside the housing, and controlling the operating unit; a power supply unit that receives a power supply signal and supplies power to the control unit; An electronic control device equipped with a pre-start vehicle abnormality detection device including a pre-start abnormality detection unit that applies a power supply signal to the power supply unit when a failure of the operating unit occurs in a pre-start state.

Description

Device for Detecting Vehicle Abnormality Before Starting}

The present invention relates to a vehicle abnormality detection device before starting. More specifically, the present invention relates to a vehicle abnormality detection device before starting, which detects liquid flowing into the housing of the electronic control device even when the engine is off or by detecting abnormal operation of the brake motor. It is about a detection device.

An electronic control device refers to a device that controls mechanical devices through electronic circuits such as transistors or integrated circuits. Recently, as mechanical devices have become widely electronic in various fields, numerous electronic control devices are being used to control mechanical devices.

These electronic control devices often control mechanical devices through hydraulic cylinders. In particular, hydraulic brakes are generally used in automobile main brake systems.

The operating principle of a car's main braking system is as follows. When the driver steps on the brake pedal, the electronic control device detects this and opens or closes the cylinder valve to create a path for pressure to be transmitted to the brake pads, and uses a motor to transmit the hydraulic pressure of the brake oil in the cylinder to each brake pad to increase braking force. Create. At this time, each valve and motor consumes current to generate braking force.

Oil may leak from the cylinder when the vehicle is driven for a long time or due to external shock. At this time, the leaked oil may flow into the electronic control device that controls the cylinder valve and motor through a tube connected to the cylinder.

However, when designing a car, it is necessary to secure internal space to facilitate the design of the drive system, so the electronic control devices installed in the car's internal space are designed to be minimized. Therefore, the circuit board inside the electronic control device is tightly fixed inside the electronic control device housing, so when oil flows into the electronic control device housing, oil can easily flow into the circuit board.

At this time, if an electrical short circuit occurs on the circuit board on which the electronic control unit is installed due to oil inflow, the valve or motor may malfunction and no braking force is generated, or overheating may occur in the electronic control unit, which may lead to a fire in the vehicle. . In particular, there is a problem in that the driver cannot check in advance for malfunctions or overheating caused by oil inflow, which prevents the driver from maintaining the vehicle's operation and leading to a major accident.

Therefore, conventional brake system manufacturers prevent oil leaks by developing cylinders, sealing the electronic control device housing to prevent liquid from entering, waterproofing the circuit board within the electronic control device, or installing a liquid detection device. A method such as installing a separate device to detect oil leaks was used.

However, the existing method could not solve the problem of oil inflow when cracks appear in the cylinder or the performance of the waterproofing and sealing treatment fails due to long-term use. In addition, the method of installing a liquid detection device separately not only requires designing the interior space of the car so that it does not affect the design of the car's drivetrain, but also requires design changes to the brake electronic control device itself, and requires design for connecting a separate sensor and electronic control device. There is a problem that changes are necessary and costs are incurred.

In addition, as mentioned above, braking hydraulic pressure is generated by a motor, and if a failure occurs in the motor driving unit that controls the operation of the motor, the motor may continue to operate, causing damage to the motor.

In addition, even if a detection device to detect such brake failure is provided, most of them are inspected after starting and with power applied, so the driver cannot recognize the car's brake failure before starting the car, so it is difficult to start the car and start the car. If the brake failure is recognized after doing so, there is a problem that the vehicle is already in danger, putting it in danger.

Registered Patent Publication No. 10-2087562

The present invention is intended to solve the problems described above. By detecting a failure in the brake system before starting, the driver can recognize the occurrence of a failure before starting, thereby preventing vehicle operation and detecting vehicle abnormalities before starting, which can prevent the possibility of an accident occurring. The challenge is to provide the device.

The problems of the present invention are not limited to the problems mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the description below.

In order to solve the above problems, according to one form of the present invention, a housing; A circuit board installed in the housing; a control unit provided on the circuit board, connected to the operating unit, and controlling the operating unit; a power supply unit that receives a power supply signal and supplies power to the control unit; An electronic control device equipped with a pre-start vehicle abnormality detection device including a pre-start abnormality detection unit that applies a power supply signal to the power supply unit when a failure of the operating unit occurs in a pre-start state.

The operating unit is a motor that generates braking pressure for a car's brakes, and the pre-starting abnormality detection unit may supply a signal applied when the motor abnormally operates before starting to the power supply unit.

It may include a first circuit that applies a power supply signal to the power supply unit of the control unit from the side where power is supplied to the motor from the motor drive unit.

The first circuit may apply the power supplied to the motor to the power supply unit of the control unit to apply a power supply signal to the power supply unit.

The pre-starting abnormality detection unit may detect liquid flowing into the housing where the circuit board is installed and apply a power supply signal to the power supply unit.

The pre-start abnormality detection unit includes a first electrode unit that receives power from a vehicle power source and is formed on the circuit board at a lower position than the control unit mounted position; It may include a second electrode part that is spaced apart from the first electrode part at a predetermined distance and is electrically connected to the first electrode part when liquid flows in to supply a signal to the power supply unit.

The first electrode unit includes one or more first patterns extending in one direction, and the second electrode unit includes one or more second electrodes parallel to the first pattern, spaced apart from the first pattern, and alternately arranged. It includes a pattern, and the control unit can detect whether electricity is applied between the first pattern and the second pattern.

A third electrode unit is spaced a predetermined distance from the first electrode unit and the second electrode unit, and is electrically connected to the first electrode unit when liquid flows in to supply a signal to the power supply unit. The control unit further includes: a first calculation unit that monitors whether electricity is supplied between the first electrode unit and the second electrode unit; It may include a second calculation unit that monitors whether electricity is supplied between the first electrode unit and the third electrode unit.

When electricity is passed between the first electrode unit and the second electrode unit due to the liquid flowing into the housing, the power flowing into the control unit is controlled so that the power supplied to the control unit is cut off. It may further include a power switch.

The operating unit may be a brake of a car, and the liquid may be brake fluid leaked into the housing from the brake of the car.

When a malfunction of the operating unit before starting is detected through the pre-starting abnormality detection unit, it may further include an alarm unit that alerts the user under the control of the control unit.

The alarm unit may turn on a warning light in the vehicle or transmit an alarm to a registered user through a wireless network.

According to the vehicle abnormality detection device before starting of the present invention, it is possible to detect an abnormality in the brake system even when the engine is off, so the driver can recognize whether a malfunction has occurred in advance before turning on the engine or driving, thereby detecting the state of brake malfunction. Safety is greatly improved as it is possible to prevent the vehicle from driving without being aware of it, and it has the effect of preventing permanent damage to the mechanical device by preventing its use in a malfunctioning state.

In addition, by changing the design of the circuit board inside the electronic control device, it can be implemented without changing the design of the separate mechanical device itself or the housing, so it can be compatible with a variety of devices, thereby reducing production costs.

The effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the description of the claims.

The summary set forth above as well as the detailed description of the preferred embodiments of the present application set forth below may be better understood when read in conjunction with the accompanying drawings. Preferred embodiments are shown in the drawings for the purpose of illustrating the invention. However, it should be understood that the present application is not limited to the exact arrangement and means shown.
Figure 1 is a diagram schematically showing the configuration of a brake system of an electronic control device equipped with a vehicle abnormality detection device before starting according to an embodiment of the present invention.
Figure 2 is a diagram schematically showing the configuration of an electronic control device equipped with a vehicle abnormality detection device before starting according to an embodiment of the present invention.
Figure 3 is a circuit diagram of the part where the electrode part of the abnormality detection unit before starting of Figure 2 is connected to the control unit.
Figure 4 is a diagram showing a brake system to which an electronic control device equipped with a vehicle abnormality detection device before starting is applied according to another embodiment of the present invention.
Figure 5 shows the voltage applied to each node when the engine is turned on, turned off, and in a fault state in a brake system equipped with an electronic control device equipped with a vehicle abnormality detection device before starting according to another embodiment of the present invention. That's one vote.

Hereinafter, preferred embodiments of the present invention, in which the object of the present invention can be realized in detail, will be described with reference to the attached drawings. In describing this embodiment, the same names and the same symbols are used for the same components, and additional description accordingly will be omitted.

Hereinafter, an electronic control device equipped with a vehicle abnormality detection device before starting according to an embodiment of the present invention will be described.

In the electronic control device equipped with a vehicle abnormality detection device before starting according to this embodiment, the liquid flowing into the housing of the electronic control device is located between the first and second electrode parts formed at a predetermined interval on the circuit board. When the first electrode unit and the second electrode unit are energized with the engine turned off, the control unit detects this and supplies power to the control unit to release the standby state and activate it.

In particular, the electronic control device equipped with a vehicle abnormality detection device before starting of this embodiment may be an electronic control device that constitutes a brake system of a vehicle. Hereinafter, an electronic control device equipped with a vehicle abnormality detection device before starting of this embodiment will be described.

As shown in FIG. 1, the electronic control device 100 equipped with a vehicle abnormality detection device before starting according to an embodiment of the present invention includes a housing 110 and a circuit board 120 provided in the housing 110. and an abnormality detection unit 160 before starting.

The housing 110 is installed in the internal space of a mechanical device equipped with an operating unit to be controlled, and protects the circuit board 120 installed inside the housing 110 by fixing it. The operating unit to be controlled may be a brake hydraulic cylinder valve or a motor 230 of a vehicle.

The shape or shape of the housing 110 may be designed to be modified according to the internal structure of a mechanical device, for example, an automobile. In particular, the housing 110 is manufactured in a minimized form so as not to affect the driving system of the vehicle.

The housing 110 serves to protect the circuit board 120 by blocking foreign substances such as dust and liquid 6 from flowing into the housing 110 from the outside. However, since the housing 110 is installed inside the vehicle and does not receive direct impact from the outside, it can generally be made of plastic material.

The housing 110 is manufactured in a form that can be opened to enable repair if the electronic control device breaks down, and may be manufactured in a form that can be assembled. Accordingly, the housing 110 may be provided with an opening and closing part (not shown) or an assembly space (not shown) for opening.

The arrangement or direction in which the housing 110 is fixed inside the mechanical device is not limited to a specific arrangement or direction. However, since liquid 6 may flow into the housing 110, the housing 110 is designed to open the housing 110 opposite to the inflow direction of the liquid 6 expected to flow into the housing 110. It may be installed inside a mechanical device so that an opening and closing part (not shown) or an assembly space (not shown) is located.

Meanwhile, the circuit board 120, which is protected from the outside through the housing 110, is installed and fixed within the housing 110. At this time, the circuit board 120 refers to a commonly used printed circuit board (PCB) and is not limited to being manufactured from a specific material.

The shape or direction in which the circuit board 120 is fixed inside the housing 110 is not limited to a specific shape or direction. However, when liquid 6 flows into the housing 110, it is preferable to fix it perpendicular to the ground to minimize damage to the circuit board 120.

At this time, the control unit 130 is connected and fixed to the conductor printed on the circuit board 120, and if the control unit 130 can operate by receiving power from a power source 150 such as a battery, it can be operated on the circuit board 120. There is no limit to the location where it is connected.

The circuit board 120 may be provided with a control unit 130 on which a chip such as an MCU (Micro Controller Unit) is mounted.

This control unit 130 may be provided to control operating parts such as brakes, engines, various mechanical devices, electronic devices, or communication devices.

For example, the control unit 130 receives signals detected from pressure sensors (not shown) and pedal displacement sensors (not shown) that respectively detect pressure inside a master cylinder (not shown) and a pedal simulator (not shown). It receives the transmission and controls the solenoid valves inside the motor 230 and the valve block (not shown), respectively, and the brake system electronic control device 100 includes a control coil for controlling the solenoid valve inside the valve block 210, and a motor ( A position sensor (not shown) may be provided in the motor 230 to detect the position of the rotor of the motor 230.

The control unit 130 may be comprised of one or more calculation units (MCUs: 132 and 133). That is, for the reliability of the system, two or more calculation units 132 and 13 may be provided.

Additionally, a power supply unit 140 that supplies power to the control unit 130 may be provided. Generally, a vehicle is equipped with a battery as a power source 150 that stores and supplies power for vehicle control, such as 12V or 24V, and the power supplied from the power source 150 is controlled by the control unit ( A power supply unit 140 is provided that converts or controls and supplies power required for 130). The power supply unit 140 may be equipped to supply power to the control unit 130 in response to a power supply signal from the ignition switch 152, which applies a power supply signal to the power supply unit 140 during startup.

That is, when the user operates the ignition switch 152 to the starting or on state, a power supply signal is applied to the power supply unit 140, and the power supply unit 140 operates according to the applied power supply signal to the control unit 130. Power can be applied to.

In addition, when the user operates the ignition switch 152 in the off state, the power supply signal to the power supply unit 140 is cut off, and the power supply unit 140 does not apply power to the control unit 130. , the vehicle and the control unit 130 may enter a deactivated state.

Additionally, when the ignition switch 152 is turned on, a power supply signal is applied to the power supply unit 140, thereby enabling the control unit 130 to be activated out of its inactivated state.

Meanwhile, in order to minimize the space occupied by the brake system, the housing 110 and the circuit board 120 can be installed near the space where brake fluid flows, and the housing ( Cracks may occur in 110 or watertightness may be broken, causing brake fluid to penetrate into the housing 110. Of course, in the present invention, the liquid 6 that penetrates into the housing 110 is not limited to brake fluid, and may be various liquids including moisture or oil in addition to brake fluid.

In this way, when the liquid 6 penetrates into the housing 110, it may accumulate near the lower side of the housing 110 due to gravity.

The pre-starting abnormality detection unit 160 of this embodiment supplies a power signal to the power supply unit 140 when the operating unit fails in a state in which the ignition is not turned on, that is, in a deactivated state before starting, and the control unit 130 may be provided to escape from the inactivated state.

And, in this embodiment, failure of the operating unit refers to a situation in which liquid penetrates into the housing 110.

That is, the pre-starting abnormality detection unit 160 detects the liquid 6 flowing into the housing 110 where the circuit board 120 is installed and supplies a power supply signal to the power supply unit 140. It can be provided.

The abnormality detection unit 160 before starting according to this embodiment is connected to an operation unit located outside the housing 110, and the control unit 130 for controlling the operation unit is located on one side of the circuit board 120 installed in the housing 110. The mounted component may include a sensor unit 170.

Meanwhile, the control unit 130 of the vehicle abnormality detection device before starting according to this embodiment may include an operation unit control unit 134 and a main control unit 131.

The main control unit 131 and the operating unit control unit 134 may be configured as functionally divided within one hardware, or may be divided into separate hardware.

The main control unit 131 can send a signal to control the operation unit to the operation unit control unit 134, and the operation unit control unit 134 can receive the signal and control the operation of the operation unit.

Meanwhile, the sensor unit 170 of the pre-start-up abnormality detection unit 160 may include a first electrode unit 171 and a second electrode unit 174.

The sensor unit 170 includes a first electrode unit 171 and a second electrode unit formed on the circuit board 120 while being spaced apart from each other in order to be energized by the liquid 6 flowing into the housing 110. (174) is provided.

At this time, the sensor unit 170, which includes the first electrode unit 171 and the second electrode unit 174, is electrically short-circuited by the liquid 6 flowing into the interior of the housing 110 and detects electricity supply. , the detected signal can be sent to the control unit 130.

The control unit 130, to which the first electrode unit 171 and the second electrode unit 174 are connected, allows the liquid 6 flowing into the housing 110 to flow between the first electrode unit 171 and the second electrode unit 174. It is possible to determine whether liquid has penetrated into the housing 110 according to the resistance generated when the first electrode unit 171 and the second electrode unit 174 are energized.

That is, when the engine is turned on, when the first electrode unit 171 and the second electrode unit 174 are energized and a signal is generated, the control unit 130 detects this and the liquid in the housing 110 ( 6) can be judged to have infiltrated.

The sensor unit 170 is not installed as a separate device, but is formed integrally with the circuit board 120, and can be implemented if it can be energized by the electrical conductivity of the liquid 6 flowing into the housing 110. There is no limit to the examples. Of course, the first electrode unit 171 and the second electrode unit 174 do not necessarily need to be formed integrally with the circuit board 120, and may be installed separately from the circuit board 120 if necessary. There will be.

That is, the sensor unit 170 may be formed by printing a pattern to be described later on the circuit board 120 and covering the insulating layer 122 to protect the circuit, while not covering the insulating layer 122 on the pattern. . In addition, the conductor pad and the insulating layer 122 are arranged in sequential order on the circuit board 120, and the insulating layer 122 is engraved according to a pattern so that the conductor pad is exposed to the outside according to a pattern to be described later. It could be.

At this time, the material of the sensor unit 170 may be the same material as the conductive wire printed on the circuit board 120, and copper (Cu) is preferably used to prevent power loss due to the inherent resistance of the material. However, there are no restrictions on the material as long as it has electrical conductivity through which current flows.

The sensor unit 170 may be formed on the lower periphery or corner of the circuit board 120. Placing the sensor unit 170 on the periphery or corner of the circuit board 120 means that the liquid 6 flows into the housing 110 before flowing into the control unit 130 installed on the circuit board 120. There is an advantage in that (170) can detect liquid (6).

Meanwhile, the spacing between the first electrode unit 171 and the second electrode unit 174 provided in the sensor unit 170 may vary depending on the type of liquid 6 expected to flow. In particular, when the liquid 6 expected to flow is a liquid 6 with a high surface tension, the liquid 6 cannot spread on the circuit board 120, so the first electrode unit 171 and the second electrode unit 174 ) The gap between them must be narrow.

Referring to FIG. 2, the first electrode unit 171 and the second electrode unit 174 of the liquid 6 detection device according to the first embodiment of the present invention are spaced apart from each other and are formed on a circuit board ( 120).

Looking at the first electrode unit 171 and the second electrode unit 174 formed in the comb pattern shown in FIG. 2 in more detail, as follows. The first electrode unit 171 receives power from the vehicle power source 150 and may be formed on the circuit board 120.

In addition, the second electrode unit 174 is spaced apart from the first electrode unit 171 at a predetermined distance, and is energized with the first electrode unit 171 when liquid 6 flows in to transmit a signal to the power supply unit 140. It can be equipped to supply.

That is, the liquid 6 is deposited between the first electrode unit 171, which receives power directly from the vehicle power source 150, and the second electrode unit 174, which is spaced apart from the first electrode unit 171. When the first electrode unit 171 and the second electrode unit 174 are submerged, electricity is passed through the first electrode unit 171 and the second electrode unit 174, and the electricity generated by this electrical conduction is used as a signal. As such, the second electrode unit 174 is provided to supply power to the power supply unit 140.

At this time, the first electrode unit 171 and the second electrode unit 174 may be disposed on the lower side of the housing 110. That is, the liquid 6 that has penetrated into the housing 110 will accumulate on the lower side of the housing 110 due to gravity, so the first electrode portion 171 and the second electrode portion 174 are connected to the housing 110. ), the penetration of the liquid (6) can be detected more quickly.

The first electrode portion 171 may include one or more first patterns 172 extending in one direction. That is, as shown in FIG. 2, the first electrode unit 171 may have a plurality of first patterns 172 extending in the vertical direction arranged in parallel and spaced apart from each other.

The second electrode portion 174 may include a second pattern 175. The second pattern 175 may be arranged in parallel with the first pattern 172 and may be provided so that one or more of the first patterns 172 are arranged alternately while the first patterns 172 are spaced apart.

Additionally, the control unit 130 may be provided to detect whether electricity is applied between the first pattern 172 and the second pattern 175.

The first pattern 172 and the second pattern 175 can be arranged horizontally on the lower side of the housing 110 to detect flooding in a large area.

Additionally, the second electrode unit 174 may be connected to the first calculation unit 132 of the control unit 130 to form an oil water inflow monitoring circuit 180.

That is, the second electrode unit 174 is branched so that one is connected to the power supply unit 140 and the other is connected to the first calculation unit 132.

Additionally, a third electrode unit 177 may be provided. The third electrode unit 177 is spaced apart from the first electrode unit 171 and the second electrode unit 174 at a predetermined distance, and is energized with the first electrode unit 171 when liquid 6 flows in to generate a signal. It may be provided to supply power to the power supply unit 140.

At this time, the third electrode unit 177 may be connected to the second calculation unit 133 of the control unit 130 to form an oil water inflow monitoring circuit 180. That is, the third electrode unit 177 is branched so that one is connected to the power supply unit 140 and the other is connected to the second calculation unit 133.

At this time, the second electrode unit 174 and the third electrode unit 177 may be spaced apart in the horizontal direction to detect penetration of the liquid 6 over a larger area.

Alternatively, the second electrode unit 174 and the third electrode unit 177 may be spaced apart in the vertical direction and may be provided to detect the level of the liquid 6 that has penetrated into the housing 110.

Alternatively, even if the liquid 6 energizes the first electrode unit 171 and the second electrode unit 174 and the first calculation unit 132 normally detects a change in current, the current is not generated in the second calculation unit 133. If the change is not detected, the control unit 130 determines that the amount of the introduced liquid 6 is not enough to damage the electronic control device, and the liquid 6 is connected to the first electrode unit 171. And only when the second electrode unit 174, the first electrode unit 171, and the third electrode unit 177 are all energized can it be determined that the water is completely submerged.

That is, the control unit 130 detects whether electricity is supplied to the first electrode unit 171, the second electrode unit 174, and the third electrode unit 177, and stores the liquid (6) in the housing 110. ) can be detected and appropriate measures can be taken.

At this time, as shown in FIG. 2, a power switch 154 may be provided in the path through which power is supplied from the power source 150 to the control unit 130. The power switch 154 is controlled by the control unit 130, and is operated between the first electrode unit 171 and the second electrode unit 174 by the liquid 6 flowing into the housing 110. When energization occurs, the power supply 150 supplied to the control unit 130 may be cut off under the control of the control unit 130. In Figure 2, the situation in which the power switch 154 is turned off is indicated by a dotted line.

That is, when the penetration of liquid 6 into the housing 110 is detected or the flooding situation is severe, the power switch 154 is turned off under the control of the control unit 130 and the power switch 154 is turned off from the power source 150. By blocking the power flowing into 130, an accident due to starting the vehicle can be prevented, or permanent damage to the control unit 130 and the operating unit can be prevented.

Meanwhile, the above-described operation of the control unit 130 to detect penetration into the housing 110 through the sensor unit 170 and the oil moisture inflow monitoring circuit 180 is performed when the ignition switch 152 is turned on. It can be detected when power is supplied to the control unit 130 by the power supply unit 140.

However, when the ignition switch 152 is in the off state before starting, power is not supplied to the control unit 130, and even in this case, it is necessary to detect whether liquid has penetrated.

For this purpose, in the abnormality detection unit 160 before starting of this embodiment, one side of the sensor unit 170 is connected to the power source 150 to receive constant power supply 150, and the other end of the sensor unit 170 is connected to the power source 150. may be provided to be connected to the power supply unit 140.

That is, as shown in FIG. 2, when the ignition switch 152 is in the on state after starting, a power supply signal is applied to the power supply unit 140, the control unit 130 is activated, and the sensor unit 170 You can monitor whether electricity is flowing or not.

Alternatively, as shown by the dotted line in FIG. 2, when the ignition switch 152 is in the off state before starting, the power supply signal is not applied to the power supply unit 140, so the control unit 130 may not be activated. there is.

At this time, one side of the sensor unit 170 is connected to the power source 150 to receive constant power supply 150, and the other side of the sensor unit 170 is branched and one side is connected to the control unit 130. And the other one can be connected to the power supply unit 140.

Therefore, even when the ignition switch 152 is in the off state before starting, if liquid 6 penetrates into the housing 110 and the sensor unit 170 is locked, electricity is supplied to the sensor unit 170, Power is supplied to the power supply unit 140 by energization, which may be a situation in which a power supply signal is applied to the power supply unit 140.

That is, as shown in FIG. 3, one of the circuits branched from the sensor unit 170 is connected to a terminal for monitoring the oil water inflow of the control unit 130 to form the oil water inflow monitoring circuit 180. , the other may be connected to a circuit that applies a power supply signal from the ignition switch 152 to the power supply unit 140.

The power supply unit 140, to which a power supply signal is applied by energizing the sensor unit 170, supplies power to the control unit 130 to activate the control unit 130, and the activated control unit 130 is It is possible to determine whether the liquid 6 has penetrated into the housing 110 by determining a signal applied from the sensor unit 170.

When the sensor unit 170 detects that liquid 6 has penetrated into the housing 110, an alarm unit 190 may be provided to alert the user under the control of the control unit 130.

The alarm unit 190 can turn on warning lights provided in the vehicle's cluster, etc., sound a warning sound through a speaker, or transmit an alarm to a registered user's cell phone or contact information through a wireless network provided in the vehicle.

In addition, after notifying the warning through the alarm unit 190, the control unit 130 switches the power switch 154 to the off state, turning the control unit 130 from the power source 150, as shown in FIG. By blocking the power flowing directly into the system, accidents due to starting the vehicle can be prevented, or permanent damage to the control unit 130 and the operating unit can be prevented.

Meanwhile, as described above, the brake system electronic control device 100 may be provided with a motor 230 that generates braking pressure necessary for braking.

FIG. 4 is a diagram briefly illustrating the configuration of the motor 230 and the motor driving unit 232 of the brake system electronic control device. As shown in FIG. 4, the motor 230 is controlled by the motor driver 232, and the motor driver 232 is controlled by the controller 130.

In addition, the motor 230 is connected to the control unit 130 as a motor monitoring circuit 234 and can monitor the number of revolutions, etc. to check for abnormal operation.

However, as described above, the control unit 130 is activated when the ignition switch 152 is in the on state after starting and can monitor the motor 230. However, when the ignition switch 152 is in the off state after starting, the control unit 130 ) is in an inactivated state, and even in this case, it is necessary to detect whether the motor 230 is operating abnormally.

Meanwhile, the motor driving unit 232 receives power directly from the power source 150 and is equipped to supply power to the motor 230 according to a signal from the control unit 130.

That is, in a normal state in which no malfunction occurs, the voltage applied to each node when the ignition switch 152 is in the on state after starting is the voltage applied to each node in the battery, ignition switch 152, and motor 230, respectively, as shown in FIG. 12V is applied, and monitoring of the control unit 130 and motor 230 is activated. Of course, depending on the vehicle model, 24V or 48V may be used as the power source 150 for the battery.

Meanwhile, in a normal state without a malfunction, when the ignition switch 152 is in the off state before starting, the voltage applied to each node may be 12V for the battery, but 0V for the ignition switch 152 and the motor 230.

However, due to a failure in the faulty part of the motor 230, 12V power may be applied to the motor 230 even though the ignition switch 152 is in the off state. At this time, since the control unit 130 is in an inactive state (sleep state), the monitoring of the motor 230 is also in an inactive state, so abnormal operation of the motor 230 cannot be detected.

Accordingly, the pre-start abnormality detection unit of the electronic control device equipped with a pre-start vehicle abnormality detection device according to another embodiment of the present invention sends a signal applied when the motor 230 is abnormally driven before starting to the power supply unit 140. It can be equipped to supply.

That is, as shown in FIG. 4, the abnormality detection unit before starting sends a power supply signal to the power supply unit 140 of the control unit 130 from the side where power is supplied to the motor 230 from the motor drive unit 232. It may be provided to include a first circuit 236 that applies.

The first circuit 236 is branched from the end where power is supplied to the motor 230 and connected to the side where power is supplied to the ignition switch 152 and the power supply unit 140, and is connected to the side where power is supplied to the motor 230. When power is supplied, power may be supplied to the power supply unit 140 of the control unit 130.

Therefore, as shown in FIG. 5, when the ignition switch 152 is in the off state and a failure occurs in the fault part of the motor 230 and 12V power is applied to the motor 230, the pre-starting abnormality occurs. Before the detection unit detects an abnormality, the control unit 130 and the monitoring of the motor 230 may be in an inactive state even though 12V power is applied to the motor 230.

However, since the first circuit 236 of the pre-starting abnormality detection unit 160 applies 12V to the motor 230 to the power supply unit 140, the power supply signal is This is an authorized situation, and the control unit 130 can be activated by applying power to the control unit 130 accordingly. When the control unit 130 is activated, the control unit 130 can detect abnormal operation of the motor 230 by monitoring whether the motor 230 operates abnormally through the monitoring circuit 234 of the motor 230.

In addition, when the control unit 130 determines that the abnormal operation of the motor 230 monitored through the motor monitoring circuit 234 is not a temporary or minor failure and is a critical failure, the control unit 130 sends an alarm through the alarm unit 190. After notifying the warning, the power switch 154 on the motor drive unit 232 is switched to the off state, as indicated by a dotted line, to block the power flowing directly from the power source 150 to the control unit 130, thereby starting the vehicle. It is possible to prevent accidents due to or prevent permanent damage to the motor 230 and the motor drive unit 232.

Additionally, when the control unit 130 detects abnormal operation of the motor 230, an alarm unit 190 may be provided to alert the user under the control of the control unit 130.

The alarm unit 190 can turn on warning lights provided in the vehicle cluster, sound a warning sound through a speaker, or transmit an alarm to a registered user's cell phone or contact information through a wireless network.

In addition, after notifying the warning through the alarm unit 190, the control unit 130 switches the power switch 154 to the off state to block the power flowing from the power source 150 to the control unit 130 to start the vehicle. It is possible to prevent accidents caused by or prevent permanent damage to the control unit 130.

As described above, preferred embodiments according to the present invention have been looked at, and the fact that the present invention can be embodied in other specific forms in addition to the embodiments described above without departing from the spirit or scope thereof is recognized by those skilled in the art. It is self-evident to them. Therefore, the above-described embodiments are to be regarded as illustrative and not restrictive, and thus the present invention is not limited to the above description but may be modified within the scope of the appended claims and their equivalents.

6: Liquid 100: Brake system electronic control device
110: housing 120: circuit board
122: insulating layer 130: control unit
131: main control unit 132: first calculation unit
133: second calculation unit 134: operating unit control unit
140: power supply unit 150: power supply
152: Ignition switch 154: Power switch
160: Abnormality detection unit before starting 170: Sensor unit
171: first electrode portion 172: first pattern
174: second electrode unit 175: second pattern
177: Third electrode unit 180: Oil moisture inflow monitoring circuit
190: Alarm unit 230: Motor
232: motor driving unit 234: motor monitoring circuit
236: 1st circuit

Claims (12)

housing;
A circuit board installed in the housing;
a control unit provided on the circuit board, connected to the operating unit, and controlling the operating unit;
a power supply unit that receives a power supply signal and supplies power to the control unit;
In the pre-start state, a pre-start abnormality detection unit that applies a power supply signal to the power supply unit when a failure of the operation unit occurs;
Electronic control device equipped with a vehicle abnormality detection device before starting, including According to paragraph 1,
The operating unit is a motor that generates braking pressure for the car's brakes,
The abnormality detection unit before starting,
An electronic control device equipped with a vehicle abnormality detection device before starting, which applies a signal applied when an abnormal operation of the motor occurs to the power supply unit. According to paragraph 2,
An electronic control device equipped with a vehicle abnormality detection device before starting, including a first circuit that applies a power supply signal to the power supply unit of the control unit from the side where power is supplied to the motor from the motor drive unit. According to paragraph 3,
The first circuit applies the power supplied to the motor to the power supply unit of the control unit and applies a power supply signal to the power supply unit. An electronic control device equipped with a vehicle abnormality detection device before starting. According to paragraph 1,
The abnormality detection unit before starting,
An electronic control device equipped with a vehicle abnormality detection device before starting, which is provided to detect liquid flowing into the housing where the circuit board is installed and to apply a power supply signal to the power supply unit. According to clause 5,
The abnormality detection unit before starting,
a first electrode unit that receives power from the vehicle's power source and is formed on the circuit board at a lower position than the position where the control unit is mounted;
a second electrode part that is spaced a predetermined distance from the first electrode part and is electrically connected to the first electrode part when liquid flows in to supply a signal to the power supply unit;
An electronic control device equipped with a vehicle abnormality detection device before starting, including a. According to clause 6,
The first electrode unit includes one or more first patterns extending in one direction,
The second electrode portion is parallel to the first pattern, is spaced apart from the first pattern, and includes one or more second patterns arranged alternately,
The control unit is an electronic control device equipped with a vehicle abnormality detection device before starting, which detects whether electricity is supplied between the first pattern and the second pattern. In clause 7,
a third electrode part that is spaced a predetermined distance from the first electrode part and the second electrode part and is electrically connected to the first electrode part when liquid flows in to supply a signal to the power supply unit;
It further includes,
The control unit,
a first calculation unit that monitors whether electricity is supplied between the first electrode unit and the second electrode unit;
a second calculation unit that monitors whether electricity is supplied between the first electrode unit and the third electrode unit;
An electronic control device equipped with a vehicle abnormality detection device before starting, including a. According to clause 6,
When electricity is passed between the first electrode unit and the second electrode unit due to the liquid flowing into the housing, the power flowing into the control unit is controlled so that the power supplied to the control unit is cut off. An electronic control device equipped with a vehicle abnormality detection device before starting, further including a power switch. According to clause 5,
The operating part is a brake of a car,
An electronic control device equipped with a vehicle abnormality detection device before starting, wherein the liquid is brake fluid that has leaked into the housing from the brakes of the vehicle. According to paragraph 1,
An alarm unit that alerts the user under the control of the control unit when a malfunction of the operating unit before starting is detected through the pre-starting abnormality detection unit;
An electronic control device equipped with a vehicle abnormality detection device before starting, further comprising: According to clause 11,
The alarm unit,
An electronic control device equipped with a vehicle abnormality detection device before starting the vehicle that turns on the vehicle's warning lights or sends an alarm to registered users through a wireless network.

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