KR20000056750A - A Vehicle Seat With Human Sensibility - Google Patents

Abstract

PURPOSE: A seat for automobile with capability of sensibility recognition is provided to automatically adjust the major adjustable portions of a car seat to be conformed to a driver's physical characteristics, such that the driver can posture at his best convenient drive attitude when the driver sits on the seat. CONSTITUTION: In a seat for automobile with capability of sensibility recognition, a controller for measuring a distribution of a human body pressure comprises a IO(Input/Output) buffer communicating with a computer, an input multiplexor which transmits a data to an address decoder for assigning an address of a seat angle force sensing resistor(FSR) measured subsequently and turns on/off the angle FSR in response to the assigned address, an output multiplexor which outputs the measured value of the angle FSR correctly to the corresponding address, a preamplifier for amplifying the measured value, and an A/D(Analog/Digital) converter for converting the amplified analog value to a digital value. Receiving a value of the seat angle FSR, the controller converts the value into a digital value and then transmit the converted data to a computer, whereby a motor for regulating a position and an angle of a seat is operated and then the seat is adjusted.

Description

A Vehicle Seat With Human Sensibility}

The present invention relates to a seat for a vehicle that is sensitive to emotion, and more particularly, the main adjustment portion of the seat is automatically adjusted according to the driver's body characteristics so that the driver can maintain the most comfortable driving posture when the driver sits on the seat. The present invention relates to a seat for an artificial intelligent vehicle.

The car seat is the closest part to the driver and passengers, and it is necessary to protect the driver and passengers from vibration from shocks and shocks caused by the irregular shape of the road surface while driving, and to comfortably discomfort in a limited space. Should be designed.

Car seats must accommodate a wide range of human body characteristics and must conform well to the human body size constraints for smooth interaction of the vehicle's internal devices or controls with humans.

Two factors are considered for the ergonomic design of the car seat. Firstly, the position and angle of the seat must be provided so that the driver can maintain a comfortable driving posture, and secondly, the car seat must provide an optimal pressure distribution without undue depression of certain body parts. In other words, driver's tax and seat adjustment characteristics are important factors in driving efficiency, safety and comfort. And the pressure generated between the seat and the body has a decisive influence on seat comfort.

Therefore, excessive pressure or incomplete pressure distribution on a specific part may interfere with a smooth blood circulation, causing numbness or numbness in the driver's body, resulting in a car accident.

In order to solve the above problems, various methods have been tried in the related art. Among them, a memory sheet was developed. The structure and operation of the memory sheet are as follows.

The adjustment area of the memory seat consists of the front height adjustment of the seat seat plate, the rear height adjustment of the seat seat of the seat seat, the seat height (the front tilting and the rear tilting are made simultaneously), the movement along the rails in front and behind the seat, It was made to be electrically controlled.

The operation of the memory sheet is to adjust the seat up to three people, and then store and store the position and angle of the seat in the most optimal seat state, the position of the seat as 1,2,3 by operating the button according to the driver And the angle was modified.

In other words, if you press one of the 1,2,3 buttons after seating on the seat to be operated, the seat position and angle are automatically adjusted to the previously memorized position.

However, it is not possible to know whether the seat position and angle are the most suitable shape for driving, and the driver changes from time to time by driving around with a lot of fatigue when traveling by a long time car. Since there is no need to memorize, the driver has an uncomfortable problem of driving while deforming an arbitrary seat from time to time.

The present invention has been made to solve the above problems, the main adjustment part of the seat is automatically adjusted according to the driver's body characteristics and body pressure so that the driver can maintain the most comfortable driving posture when the driver sits on the seat to drive The purpose is to produce artificial intelligent car seats that can be adjusted.

Seat adjustment system for adjusting the position and angle of the seat in accordance with the body pressure detected by the body pressure distribution meter and the body pressure distribution measuring device and the body pressure distribution measuring device is equipped with a motor and the body pressure sensor to achieve the above object The present invention provides an automobile seat in which the seat is automatically adjusted according to the driver's body by providing an integrated control system that controls them integrally.

1 is a perspective view of the overall configuration of a vehicle seat of the present invention

2 is a block diagram of the present invention automatic body detection sheet

Figure 3 is a side view showing the adjustment site state of the automatic body detection sheet of the present invention

Figure 4 is a block diagram showing the body pressure sensor insertion position of the present invention

5 is a graph showing the resistance to the force of the body pressure sensor of the present invention

Figure 6 is a flow chart of the operating state of the automatic body detection sheet of the present invention

7 is a configuration diagram of the data base for automatic seat of the present invention

8 is a block diagram of the present invention automatic body detection sheet control system

9 is a body pressure distribution diagram of a temporary example of the present invention automatic body detection sheet

10 is an external view of a control box of the present invention automatic body detection sheet

<Explanation of symbols for main parts of drawing>

(1): Front up and down motor (2): Rear up and down motor

(3): backrest motor (4): sliding motor

(5): seat seat (6): seat back

Referring to the configuration and operation of the present invention in detail based on the accompanying drawings as follows.

1 is an overall configuration perspective view of a seat for a vehicle of the present invention,

2 is a block diagram of the present invention automatic body detection sheet,

Figure 3 is a side view showing the adjustment site state of the automatic body detection sheet of the present invention,

4 is a configuration diagram showing a body pressure sensor insertion position of the present invention;

5 is a graph showing the resistance to the force of the body pressure sensor of the present invention,

Figure 6 is a flow chart of the operating state of the automatic body detecting sheet of the present invention,

7 is a configuration diagram of a data base for automatic seating of the present invention;

8 is a configuration diagram of the automatic body detection sheet control system of the present invention;

9 is a body pressure distribution diagram of a temporary example of the present invention body figure detecting sheet,

10 is an external view of a control box of the present invention automatic body detection sheet.

Seven body pressure sensors are built into the seat back and the seat. In addition, the four main control parts are equipped with four motors, the front up and down motors 1, the rear up and down motors 2, the backrest motors 3, and the sliding motors 4, respectively. The front rear height adjustment and the front rear distance adjustment of and the back angle adjustment of the seat back 6 are electrically adjusted.

The body pressure distribution system has a function of receiving each seat force sensing resistor (FSR) (hereinafter referred to as body pressure sensor as FSR) and converting it into digital values to transmit data to a computer.

The body pressure sensor, FSR, is a polymer thin film that is very flexible and has almost no stress. This body pressure sensor FSR shows a decrease in the resistance value as the force applied to the surface thereof increases. The figure shows the variation of the resistance value with the applied force of the FSR. As can be seen in Figure 5 log F and log R is almost linear. Comparing the resistance to the force with a general figure is as follows.

100 g-> 80,000 ohm 500 g-> 25,000 ohm

1 kg-> 13,000 ohm 10 kg-> 2,200 ohm

Each FSR requires ± 15% error from each other, so calibration is required. Calibration uses the characteristics of FIG. The characteristic of FIG. 5 is expressed as a formula as follows.

To determine the unknowns a and b, 1000g and 2000g loads were applied to the FSR, and the digital values for the loads were measured to determine a and b for each FSR to compensate for the error.

The controller for measuring body pressure distribution is an IO buffer that communicates with a computer, an address decoder that specifies the address of each FSR that is sequentially measured, and an input multiplexer that turns each FSR on and off according to the specified address. (Multiplexor), an output multiplexer that exports the measured FSR value to its address, and a Pre. It is composed of A / D converter which converts amplified analog value to digital value. It can have deformation of sheet by analyzing the data read from the system and driving motor attached to the sheet. .

The seat adjustment system uses a power seat and a DC motor controller. In the integrated control system, the input body shape, body pressure distribution, seat adjustment data, etc. are integrated and controlled according to predetermined rules.

As shown in FIG. 6, the basic mechanism of the present invention automatic body sheet is SP (Seat Position) is the seat adjustment amount, BP (Body Pressure) is the body pressure distribution, BP ^* is the optimum body pressure distribution, and Anth (Anthropometry) Indicates the body type, respectively.

When the user enters his / her body shape (key, weight), the seat adjustment amount most appropriate to the body shape is determined first by a predetermined rule (SP = ｆ (Anth)). The optimal body pressure and body pressure ratio that is most suitable for the body type inputted by the relational expression (BP ^* = ｆ (Anth)) are determined.

In this case, the user's body type is inputted to a database that is continuously accumulated and a rule base to be improved.

When the body shape and the body pressure distribution data are obtained enough to estimate the body shape using the body pressure distribution, the mechanism of the automatic body shape detection sheet will be executed by automatically estimating the user's body shape without inputting the body shape.

The seat control system automatically adjusts the seat by driving a motor in the seat main part according to the seat adjustment amount determined primarily.

That is, the entire seat can be moved back and forth by operating the sliding motor, and the front up / down motor (1), the rear up / down motor (2), and the backrest motor (3) are operated to operate the motor while being coupled to the motor. The nut screw installed to drive the bolt-shaped screw and the bolt-shaped screw interlocked with the drive is operated again, and the screw attached to the seat rotates due to the operation of the nut screw, so that the seat can be moved up and down. It will be.

Looking again at the operation example, when the rotation speed of the seat motor is specified and operated in the integrated control system (computer), the data is transmitted to the controller for seat adjustment through the communication line. The processor in the controller receives the data sent from the computer to determine the rotation speed and transmits a signal to the motor drive circuit for rotating the motor, thereby applying the rotation of the motor to the desired position. The rotational axis of the motor is rotated by the number of revolutions controlled by the processor, and the position determination guide connected to the rotational axis is moved by a desired position, so the position and angle of the seat are deformed.

The automatic seat control system comprehensively controls them by a predetermined rule according to the input driver's body type, body pressure distribution data, seat adjustment data, and the like.

A database as shown in FIG. 7 was constructed to continuously manage information about a driver's body shape, body pressure distribution data at a reference position, body pressure distribution data at an optimal position, and an optimal seat adjustment amount.

The field configuration of the database includes user information (name, gender, height, weight, body fidelity index, weight ratio for height), body pressure information at the reference position (STBP_b1, STBP_b2, ..., STBP_c7), body pressure information at the optimum position. (OPBP_b1, OPBP_b2, ..., OPBP_c7), sheet adjustment amount information (Front tilting, Rear tilting, Sliding, Reclining) and the like.

1) The rule base is as follows.

A rule base was constructed through statistical analysis of driver's body shape information, optimal seat adjustment amount information, and optimal body pressure information. The basic rules for the integrated control of auto body sensing sheets are as follows.

end.

It is a rule for driving a seat primarily according to the input body shape. This rule used the regression equation estimated through multiple regression analysis between body shape and seat adjustment. When the user of the automatic body type detection sheet enters a body type, each part of the sheet is automatically adjusted by the following rules.

(One)

(2)

(3)

(4)

(The above and the following constant values are the dimensions showing the movement when the movement of the sheet subjected to the regression analysis is based on 100)

I.

This is a rule for estimating the optimal body pressure and body pressure ratio with respect to the input user's body type. This rule is According to the rule, the body pressure is primarily measured while the seat is adjusted, in order to compare the measured body pressure with the optimal body pressure. This rule was constructed using multiple regression analysis of body shape and body pressure distribution data.

When the user of the automatic body type detection sheet inputs a body type, the optimal body pressure and body pressure ratio of each part of the seat are estimated by the following rule.

(One)

(2)

(3)

(4)

(5)

(6)

(7)

(8)

(9)

All.

This is a rule for comparing the measured body pressure with the optimal body pressure after the sheet is primarily driven. When comparing the measured body pressure with the optimal body pressure, the standard error of the estimate of multiple regression equations is used to determine the criteria for the measured body pressure to satisfy the optimal body pressure as the range of the optimal body pressure. Was used. If the measured body pressure satisfies the following rule, the procedure goes to the next step (satisfaction of the user), otherwise the seat is re-driven by the rule relating to the seat adjustment amount and body pressure.

(One)

(2)

(3)

la.

If the measured body pressure does not satisfy the optimum body pressure range, the seat is readjusted according to the following rules. This rule was constructed using the correlation analysis between seat adjustment and body pressure distribution. According to the following rules, the measured body pressure is repeatedly readjusted until the optimum body pressure is satisfied.

(One)

(2)

(3)

2) automatic seat control system

The automatic seat control system is composed of user information, body pressure information, a sheet adjustment information panel, several command keys, and the like as shown in FIG. 8.

In the user information panel, the user's gender, height, and weight can be entered and added to the database. If you enter the height and weight entered, the body fidelity index and weight ratio for height are automatically calculated. The body pressure information panel shows the body pressure generated between the driver and the seat, and the seat control information panel shows the adjustment amount of the position and angle of the seat in real time. There are two manual modes, one for manual adjustment by the user and one for automatic control by the control system.

The command key [reference position] initializes the sheet to a predetermined predetermined position, and measures and records the body pressure before the user is seated. The measured body pressure is to determine the offset value. The [Start] button drives the seat according to a predetermined rule by using the input user's body type. [Save Data] button saves user information, body pressure information, seat adjustment information, etc. in the database. You can use the [Cancel button] to cancel the running state and start again.

That is, when the driver sits on the seat for driving, the distribution of body pressure appears as shown in FIG. 9, and the shape of the seat is read by the system.

The control box shown in FIG. 10 is used to provide an optimal seat shape to the driver by deforming the shape of each seat either automatically or in the shape of a memory sheet.

Therefore, in the present invention, the biomechanical model of the sitting posture may contribute to the development of a lower back pain prevention technology and further contribute to the qualitative improvement of the automobile culture and public welfare. In addition, since the emotional seat design technology can secure internationally unique comfort seat design technology and advanced automobile development technology, this advancement can contribute to the improvement of the overseas export competitiveness of automobiles.

Claims (3)

Each body pressure sensor FSR (Force Sensing Resistor) value is received and converted into a digital value to transmit data to the computer, the body pressure distribution accumulation controller (controller) is an IO buffer that communicates with the computer and is measured sequentially Sends data to the address decoder that specifies the address of each FSR, exports the input multiplexor to turn on / off each body pressure sensor according to the designated address, and exports the measured body pressure sensor values according to the address. Output Multiplexer and Pre. AMP., An A / D converter that converts the amplified analog value to a digital value, and each body pressure sensor FSR (Force Sensing Resistor) value is received and converted into a digital value to transfer the data to a computer. An automobile seat having emotion recognition, characterized by changing the position and angle of the seat by driving a motor of the seat based on the data. When the user enters his or her body shape (key, weight), the seat adjustment amount most appropriate to the body type is determined first by the predetermined rule (SP = ｆ (Anth)), and the body type is determined by comparing the body pressure distribution with the body type. An automobile seat having emotion recognition, characterized by determining an optimum body pressure and a body pressure ratio that are most suitable for a body type input by a relational expression (BP ^* = ｆ (Anth)). When the rotation speed of the seat motor is specified and operated in the integrated control system (computer), data is transmitted to the controller for seat adjustment through the communication line, and the processor in the controller receives the data sent from the computer to determine the rotation speed and rotates the motor. By transmitting a signal to the motor drive circuit to apply the rotation of the motor as much as you want to control, the rotation axis of the motor is rotated by the number of revolutions controlled by the processor and the position guide connected to the rotation axis is moved by the desired position Car seats that can be recognized emotions, characterized in that consisting of.