JPH11264276A - Power window control device with emergency escape function - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a power window control device provided with emergency escape function capable of opening a window even in the case of inducing a submergence accident of a vehicle, without needing an emergency instrument such as a hammer. SOLUTION: A power window control circuit 1 comprises a water detecting pattern circuit 8 constituting an emergency sensor means E connected to a CPU 7, a three-input AND circuit 10 connected to the CPU 7, a pair of relay means R, and a switching means S connected to the input side of the CPU 7. A driving means 5 is connected to a first relay 13 and a second relay 14 of a pair of relay means R. A watchdog circuit 9 constituting the emergency sensor means E is connected to the CPU 7.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power window control device, and more particularly to a technology for enabling an emergency escape from a vehicle even when submerged and when a CPU is not operated.

[0002]

2. Description of the Related Art As a conventional power window control device, for example, as disclosed in Japanese Utility Model Laid-Open Publication No. 1-132033, an internal switch for closing and automatic closing is operated according to the stroke when operating in one direction. A seesaw-type operation switch that closes and closes the internal switch for opening and automatic opening according to the stroke when the other is operated, a normally open contact at the power supply end, and a normally closed contact closes the operation switch A pair of closing and opening relays respectively connected to the internal switch for opening and the internal switch for opening,
Selectively energize the closing and opening relays based on the motor connected between the common contacts of a pair of relays and the output of the internal switch for automatic closing or automatic opening of the operation switch. Automatic opening / closing control means for opening and closing the other of the operation switches based on the output of the internal switch for opening or closing the operation switch when the relay for opening or closing is driven by the automatic opening / closing control means. Stopping means for stopping the motor by energizing the forming relay, and deactivating means for deactivating the pair of relays by opening the contacts of all the internal switches of the operation switch when the pair of relays are activated. With this configuration, the control current of the operation switch can be reduced, and the structure of the operation switch can be simplified by eliminating the need for a lock function. There is a technique that allows the Yoshido improvement.

[0003]

However, there is no disclosure of a means for escaping when the occupant escapes urgently due to submersion in a vehicle accident or when the automatic opening / closing control circuit becomes inactive. Therefore, there has been a problem that the occupant cannot operate the power window control device urgently, cannot escape from the vehicle, and causes a fatal accident.

[0004] For this reason, some vehicles are equipped with a split hammer to allow the occupant to escape from the vehicle, but they may not be used in an emergency.

Also, in the electronic circuit technology constituting the conventional power window control device, when the vehicle is submerged by a vehicle accident, water enters the power window control circuit, causing insulation failure and causing the CPU to stop operating. The occupant cannot escape from the vehicle. Furthermore, in an emergency, an occupant cannot select an operation switch, cannot escape from the vehicle, and loses his / her life.

Accordingly, the present invention provides a power window control device having an emergency escape function that can open a window even when a vehicle submergence accident occurs and does not require an emergency device such as another hammer. The purpose is to provide.

[0007]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and comprises an emergency sensor connected to a CPU, a three-input AND circuit connected to the CPU, a pair of relays and a CPU. Provided is a power window control device provided with an emergency escape function, wherein a switch means connected to an input side and a drive means are connected to the relay means.

According to the present invention, there is provided a power window control device having an emergency escape function according to claim 1, wherein the emergency sensor means comprises a water detection pattern.

According to the present invention, there is provided a power window control device having an emergency escape function according to claim 2, wherein the emergency sensor means comprises a watchdog circuit.

Further, in the present invention, the watchdog circuit connects a differentiating circuit comprising a capacitor and a resistor to a base of a PNP transistor, and a collector comprises an output terminal and an integrating circuit comprising a capacitor and a resistor connected in parallel. 4. The circuit according to claim 1, wherein the circuit is connected.
A power window control device provided with the emergency escape function described above.

In the present invention, the three-input AND circuit includes an NPN transistor, an NPN transistor, a base-side resistor of the NPN transistor,
4. A power window control device having an emergency escape function according to claim 1, wherein the power window control device has a connection configuration of a base-side resistor of a PN transistor and a diode.

In the present invention, the switch means includes a first switch and a third switch interlocked with the first switch.
A power window control device having an emergency escape function according to claim 1 having a configuration of a switch and a second switch.

Further, in the present invention, the input terminal of the CPU has a pull-up resistor and a second switch having one end grounded;
An input terminal is a first switch having a pull-up resistor and one end grounded, an input terminal is a water detection pattern circuit having a pull-up resistor and one end grounded, an output terminal is a watchdog circuit,
The output terminals are connected to a 3-input AND circuit, respectively.
The output terminal of the transistor is connected to the base of the transistor, the emitter of the transistor is grounded, the collector is connected to the connection point of the first relay and the diode of the pair of relay means, the output terminal of the CPU is connected to the base of the transistor, The emitter of the transistor is grounded, the collector is connected to the connection point between the second relay and the diode of the relay means, and the other end of the second relay is connected to the third switch, which is linked to the first switch.
Connected to a switch, a driving means is connected between the relay contacts of the first relay and the second relay of the relay means, and each of the relay means is connected to an output terminal of a three-input AND circuit, and an input terminal of the three-input AND circuit is connected. A power window control device having an emergency exit function connected to an output terminal of a watchdog circuit and an input terminal connected to a power supply is provided.

[0014]

FIG. 1 is an electric circuit diagram showing an embodiment of the present invention. Hereinafter, the configuration will be described based on reference numerals to clarify the present invention. A power window control circuit 1 in the drawing connects an external ignition switch 2, a power supply 23, and a driving means 5 composed of a motor. This configuration is provided for each door of the vehicle. The CPU 7 housed in the power window control circuit 1 includes a constant voltage circuit 6
The input terminal a is connected to the second switch 4 for raising the window, the input terminal b is connected to the first switch 3 for lowering the window, and the input terminal c is connected to the water detection pattern circuit 8 constituting the emergency sensor means E. And the other end of the water detection pattern circuit 8 is grounded. Further, pull-up resistors 18, 19, 20 are connected to the input terminals a, b, c, respectively. The other ends of the pull-up resistors 18, 19, 20 are connected to the constant voltage circuit 6. A plurality of water detection pattern circuits 8 can be formed on the electronic circuit board, and can be connected in parallel with the first switch 3 for lowering the window and the second switch 4 for raising the window.

The output terminal f of the CPU 7 is connected to a resistor 21.
To the base side of the NPN transistor 11 through the NP
The emitter of the N transistor 11 is grounded, and the collector is the first relay 1 for lowering the window of the pair of relay means (R).
3 and the anode of the diode 15, and the cathode of the diode 15 is connected to the output terminal i of the three-input AND circuit 10. The other end of the window lowering first relay 13 is connected to a power source 23.

The output terminal g of the CPU 7 is connected to a resistor 22.
To the base side of the NPN transistor 12 via the NP
The emitter of the N transistor 12 is grounded, and the collector is a second relay 14 for raising the window of the pair of relay means (R).
Connected to the anode of the diode 16 and the diode 1
The cathode 6 is connected to the output terminal i of the three-input AND circuit 10. The other end of the second relay 14 for raising the window is connected to a power source 23 via a third switch 17 that is interlocked with the first switch 3 for lowering the window.

Further, the output terminal d of the CPU 7 is connected to the input terminal m of the watchdog circuit 9 constituting the emergency sensor means E, and the output terminal n of the watchdog circuit 9 is 3
It is connected to the input terminal k of the input AND circuit 10.

The output terminal e of the CPU 7 has three inputs A.
It is connected to the input terminal 1 of the ND circuit 10. 3-input AN
The input terminal j of the D circuit 10 is connected to the power supply 23.

The movable contact a of the first relay 13 for lowering the window
And the movable side relay contact a of the second relay 14 for raising the window
Are connected to the driving means 5, respectively, and the relay contacts b of the first relay 13 for lowering the window and the second relay 14 for raising the window are both grounded, and the first relay 13 for lowering the window and the upper The relay contacts c of the second relay 14 are both connected to the power supply 23.

An embodiment of the three-input AND circuit 10 is shown in FIG. To explain this, NPN transistor 2
4, the collector is connected to the output terminal i, the emitter is grounded,
The base is connected to input terminal j via resistor 29 and
The emitter of the PN transistor 27 is grounded, and the base is connected to the input terminal j via the resistor 28, the input terminal k via the diode 26, and the input terminal l via the diode 25. The collector of the NPN transistor 27 is the NP
Connected to the base of N transistor 24.

An embodiment of the watchdog circuit 9 is shown in FIG. To explain this, the input terminal m is connected to the base of the PNP transistor 33 through a differentiating circuit including the capacitor 30 and the resistor 31, and further connected from the base of the PNP transistor 33 to the power supply 23 through the resistor 32. The emitter of the PNP transistor 33 is connected to the power supply 23, the collector of the PNP transistor 33 is connected to the output terminal n, and further grounded via an integrating circuit including a resistor 35 and a capacitor 34.

The operation will be described with the above configuration. When the ignition switch 2 is closed, a circuit in which power is supplied from the power supply 23 to the power window control circuit 1 is formed, and the second switch 4 for raising the window is operated. The second relay 14 for raising the window is operated by the operation, and the driving means 5 is driven in the window raising direction. The operation of the first switch 3 for lowering the window activates the first relay 13 for lowering the window, and
Is driven in the window lowering direction, and the CPU 7 is programmed to open and close the window. When the CPU 7 is functioning normally, the output terminal d always sends out a clock signal, and the output signal of the output terminal e monitors the input terminal c. It has a program that sends output.

In this configuration, when water enters the power window control circuit 1, the insulation resistance of water is as low as about 10 KΩ, and all the high impedance electronic circuits are short-circuited and the power window control function is lost. The window can be opened in an emergency by the operation described below.

When the water detection pattern circuit 8 detects the intrusion of water and the potential at the connection point with the pull-up resistor 18 decreases, when the CPU 7 is still operating normally, the output terminal e is set to " 0 ”level, 3 inputs AND
Since l terminals of the circuit 10 becomes "0", H ₁ a signal level of the output terminal i, the signal level of the input terminal l H _2, input terminal k signal levels of H ₃ of the signal level of the input terminal j H ₄
, The following logical expression of the three-input AND circuit 10, H ₁
= By H ₂ × H ₃ × H ₄ is established, the terminal j "0" is output.

The three-input AND circuit 10 will be described in detail with reference to the embodiment shown in FIG. 2. The circuit is entirely composed of electronic components having low impedance, and is designed so that the function is not stopped even if the insulation resistance changes due to submersion.

The input terminal j goes to the "1" level at the same time when the ignition switch 2 is closed.
The signal is input to the base of the PN transistor 27, the NPN transistor 27 is turned on, and the NPN transistor 2
The NPN transistor 24 cannot operate because of short-circuit between the base and the emitter of No. 4. Thus, the output terminal i cannot flow current and is in an inactive state. When the terminal i becomes “0” level due to the submersion, the base of the NPN transistor 27 becomes “0” via the diode 25.
Level, and the NPN transistor 27 is turned off. As a result, the potential of the base of the NPN transistor 24 rises, the NPN transistor 24 conducts, and the output terminal i becomes the “0” level. At this time, whether the level of the input terminal k is "1" or "0" has no relation to the operation.

When the output of the three-input AND circuit 10 becomes "0" level by the above operation, the window lowering first relay 13 connected to the power supply 23 is grounded via the diode 15 and operates. The second relay 14 for raising the window is simultaneously operated via the third switch 17 and the diode 16 linked to the lowering operation. As a result, both the first relay 13 and the second relay 14 operate, so that their relay contacts a and c are both conductive, and a circuit for driving the driving means 5 is not formed and does not operate.

In this state, if the first switch 3 for window lowering operation or the second switch 4 for window raising operation is operated simultaneously, the third switch interlocked with the first switch 3 for window lowering operation. 17 is opened, the circuit of the second relay 14 for raising the window is cut off, and the connection is changed to the connection between the relay contacts a and b. As a result, the circuit of the driving means 5 includes the power source 23, the relay contacts c and a of the first relay 13 for lowering the window, the driving means 5, the relay contacts a and b of the second relay 14 for raising the window, grounding and circuit formation. Then, the driving means 5 operates in the direction of descending the window. Since the driving circuit components of the driving means 5 operate at a value sufficiently lower than the insulation resistance of water, there is no adverse effect on the operation due to submersion in water.

Further, the above description is for the case where the vehicle is submerged. However, the first relay 13 and the second relay 13 may fail due to an accidental failure of the CPU 7, a failure due to an abnormal voltage rise caused by a failure of the constant voltage circuit 6, or a malfunction due to an electromagnetic disturbance. When the CPU 14 performs simultaneous operations not included in the program, no clock signal is transmitted from the output terminal d of the CPU 7. The operation will be described below. The input terminal m of the watchdog circuit 9 shown in FIG. 3 remains at the “1” or “0” level.

Therefore, no current flows through the capacitor 30 and the resistor 31 forming the differentiating circuit of the watchdog circuit 9, the PNP transistor 33 becomes non-conductive, the potential of the capacitor 34 of the integrating circuit does not rise, and the output terminal n Remain at the “0” level. Therefore, the input terminal k of the three-input AND circuit 10 connected to the watchdog circuit 9
Becomes "0" level, and the output of the output terminal i becomes "0" level by the logical operation. Therefore, it is possible to drive both the first relay 13 and the second relay 14 by the same operation as the operation at the time of submerging. Although it is possible, a detailed description thereof will be omitted.

As described above, it is possible to configure the power window circuit 1 which does not lose the function of the first switch 3 for lowering the window even if the CPU 7 becomes inoperable when submerged.

[0032]

As described above, according to the present invention,
The window can be opened even in the event of a vehicle submersion accident, and emergency evacuation is possible without equipping emergency equipment such as a hammer that breaks the window glass, and safety in an emergency can be secured.

In particular, in a configuration in which the emergency sensor means comprises a water detection pattern circuit,
The sensing accuracy and reliability for water are high, and higher safety can be ensured in the event of an emergency when the vehicle is submerged.

According to a third aspect of the present invention, in the configuration wherein the emergency sensor means comprises a watchdog circuit,
Even when the CPU is caused by an accidental failure or a failure due to an abnormal voltage rise caused by a failure of the constant voltage circuit, the inoperative state of the power window control device can be resolved and the occupant of the vehicle can escape.

[Brief description of the drawings]

FIG. 1 is an electric circuit diagram showing an embodiment of the present invention.

FIG. 2 is an electrical circuit diagram of the three-input AND circuit shown in FIG.

FIG. 3 is an electrical circuit diagram of the watchdog circuit shown in FIG. 1;

[Explanation of symbols]

 Reference Signs List 1 power window control circuit 2 ignition switch 3 first switch 4 second switch 5 driving means 6 constant voltage circuit 7 CPU 8 emergency sensor 9 watchdog circuit 10 3-input AND circuit 23 power supply 11, 12, 24, 27 NPN transistor 13th 1 relay 14 second relay 17 third switch 15, 16, 25, 26 diode 18, 19, 20 pull-up resistor 21, 22, 28, 29, 31, 32, 35 resistor 33 PNP transistor 30, 34 capacitor S switch means R Relay means E Emergency sensor means

Continued on the front page (51) Int.Cl. ⁶ Identification code FI B60R 21/00 630 B60J 1/17 A

Claims (7)

[Claims] An emergency sensor means (E) connected to a CPU (7), a three-input AND circuit (10) connected to the CPU (7), a pair of relay means (R) and a CPU.
(7) A power window control device having an emergency escape function, comprising a switch means (S) connected to the input side and a drive means (5) connected to the relay means (R). 2. The power window control device with an emergency escape function according to claim 1, wherein said emergency sensor means (E) comprises a water detection pattern circuit (8). 3. The power window control device with an emergency escape function according to claim 1, wherein said emergency sensor means (E) comprises a watchdog circuit (9). 4. The watchdog circuit (9) connects a differentiator composed of a capacitor (30) and a resistor (31) to the base of a PNP transistor (33), and has a collector connected to an output terminal (n). 4. A power window control device with an emergency escape function according to claim 1, wherein the power window control device has a configuration in which an integration circuit comprising a parallel connection of a capacitor, a capacitor and a resistor is connected. 5. A three-input AND circuit (10) includes an NPN transistor (24) and an NPN transistor (2).
7), the base-side resistance (28) of the NPN transistor (27), the base-side resistance (29) of the NPN transistor (24), and the diodes (25) and (26).
4. The power window control device with an emergency escape function according to claim 1, wherein the power window control device has a connection configuration with the power window control device. 6. The switch means (S) comprises a first switch (3), a third switch (17) interlocked with the first switch (3), and a second switch (4). The power window control device with an emergency escape function according to claim 1, wherein 7. An input terminal (a) of the CPU (7) is connected to a pull-up resistor (20) and a second switch (4) having one end grounded.
A first switch (3) whose input terminal (b) is connected to a pull-up resistor (19) and one end is grounded; and a water detection pattern circuit (8) whose input terminal (c) is connected to a pull-up resistor (18) and one end is grounded. ), The output terminal (d) is a watchdog circuit (9), and the output terminal (e) is a three-input AND circuit (10).
The output terminal (f) of the CPU (7) is connected to the base of the transistor (11), the emitter of the transistor (11) is grounded, and the collector is the first relay of the pair of relay means (R). The output terminal (g) of the CPU (7) is connected to the base of the transistor (12), the emitter of the transistor (12) is grounded, and the collector is a relay. The means (R) is connected to a connection point between the second relay (14) and the diode (16), and the other end of the second relay (14) is connected to the third switch (1) linked with the first switch (3).
7) connected to the first relay (13) of the relay means (R)
A driving means (5) is connected between the relay contacts (a) and (a) of the second relay (14), and the relay means (R) is connected to the output terminal (i) of the three-input AND circuit (10). The input terminal (k) of the three-input AND circuit (10) is connected to the output terminal (n) of the watchdog circuit (9), and the input terminal (j) is connected to the power supply (23). Power window control device with emergency escape function.