JP2547538Y2 - Touch switch device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a touch switch device capable of changing a response mode of a touch switch according to a vehicle speed.

[0002]

2. Description of the Related Art Touch switch devices such as beam type touch switches have recently been developed. This beam-type touch switch is configured by combining a display unit such as a CRT and an infrared light receiving / emitting element. Specifically, a switch image is displayed on the display unit, and a light-emitting element and a light-receiving element are arranged on a peripheral portion surrounding the display unit, and a structure is formed in which an infrared beam network is formed on the front of the screen by the light-receiving and light-emitting elements. I was Then, when an arbitrary portion of the beam net is interrupted by an operator's finger or the like, this is detected, the operation position of the switch image is determined, and an operation signal of the corresponding switch is output. A conventional technique of this kind is disclosed in Japanese Utility Model Laid-Open No. Sho 62-121641.

[0003]

When a touch switch device of this type is mounted on a vehicle, the touch switch is often operated by groping during traveling. Therefore, in order to prevent erroneous operation, the touch switch device may be configured to respond when, for example, a finger is released from the touch switch. However, operating the touch switch device in the above mode when the vehicle is stopped has a disadvantage that the user feels poor responsiveness.

[0004]

According to the present invention, the responsive mode of the touch switch is changed in accordance with the speed of the vehicle, thereby preventing erroneous operation during running and improving responsiveness during stopping. It is an object to provide a touch switch device. As means therefor, a touch switch having a plurality of operation parts on a plane, a vehicle speed sensor for detecting a speed of the vehicle and outputting a vehicle speed signal, a vehicle speed signal from the vehicle speed sensor and an output by operating the touch switch And a control unit for inputting a signal.
Vehicle speed judgment to determine whether the vehicle is running or stopped
Means for determining a traveling state by the vehicle speed determining means.
Mode that responds to releasing your finger from the touch switch
Means to set the stop state by the vehicle speed determination means.
Feeling that the finger touches the touch switch when judged
Means for setting a corresponding mode .

[0005]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a sectional view of an embodiment in which the present invention is applied to a beam type touch switch device for a vehicle. FIG.
1 is a display unit comprising a CRT or a plasma display, etc., 2 is a matrix unit which constitutes a touch switch 5 in combination with the display unit 1, 3 is a control unit, 4 is a receiving unit, 6 is a speaker and 7 Is a vehicle speed sensor.

The display section 1 displays a plurality of switch images 1a to 11 related to, for example, an audiovisual device. The matrix unit 2 scans infrared beams La to Lg vertically and horizontally on the front surface of the display unit 1 to form a beam network.
a to 21g and phototransistors 22a to 22g.

The control unit 3 controls the display unit 1 and the matrix unit 2 of the touch switch 5 and detects a portion where the beams La to Lg are cut off when a part of the beams La to Lg is cut off by an operator. The signals corresponding to the switch images 1a to 11 displayed at the indicated places are received by the receiving unit 4 in the subsequent stage.
Output to The control unit 3 includes a PS converter 31, a RAM 32, a CRT controller 33, a multiplexer 34, a CPU 35, a matrix unit driving circuit 3
6, a RAM 37, a transmission unit 38, and an oscillator 39.

The PS converter 31, RAM 32, CR
The T controller 33 and the multiplexer 34
This is a block for controlling the display unit 1 of the touch switch 5 by a control signal from U35. The matrix section driving circuit 36 is a block for controlling the matrix section 2 of the touch switch 5 by a control signal from the CPU 35. The transmitting unit 38 is a block that converts a signal output from the CPU 35 into, for example, a multiplexed coded signal and transmits the multiplexed signal to the receiving unit 4. Further, the oscillator 39 has a CP
This is a block for controlling the speaker 6 by a control signal from U35 and outputting a notification signal. And the CPU 35
2 is a function shown in the flowchart of FIG. 2, that is, means for determining which side of the rising portion or the falling portion of the output signal of the touch switch 5 is sensitive in accordance with the vehicle speed signal output from the vehicle speed sensor 7. Have as a program

The speaker 6 is a piezoelectric speaker provided near the display unit 1 or an existing speaker provided in the vehicle interior.

The vehicle speed sensor 7 includes a pulse generator 71 for generating a pulse corresponding to the rotation of the wheel, a smoothing circuit 72 for smoothing the pulse, and a smoothing signal level of the smoothing circuit 72 to a reference voltage circuit 73. It is connected and configured by a comparison circuit 74 for comparing with a reference level. Next, the operation of the above embodiment is shown in FIG.
This will be described with reference to the flowchart shown in FIG. First, in steps 101 to 103, the CPU 35 controls the display unit 1 and the matrix unit 2 of the touch switch 5. CPU3
Numeral 5 sends a timing signal to the matrix section driving circuit 36 at a predetermined cycle, and the matrix section driving circuit 36 sequentially emits the infrared light emitting diodes 21a to 21g of the matrix section 2 in synchronization with the timing signal. The beams La to Lg emitted from the infrared light emitting diodes 21a to 21g are
a through 22g, the photodiode 22
The signal is converted into an electric signal by a to 22g. This electric signal is input from the matrix section 2 to the CPU 35.

Next, in steps 104 to 107, C
The PU 35 sets the response mode according to the vehicle speed. That is, in step 104, a signal is input from the vehicle speed sensor 7, and the process proceeds to step 105. In step 105, it is determined whether or not the speed of the vehicle is equal to or higher than a predetermined vehicle speed based on an input signal from the vehicle speed sensor 7.
Proceed to 06, and proceed to step 107 if the determination is NO.

Step 106 is a step for setting a sensitive mode when the vehicle is in a running state. The step 106 sets the CPU 35 to a mode sensitive to the rising portion of the output signal of the touch switch 5. This allows
The CPU 35 controls the touch switch 5 when the vehicle is running.
The mode is set to respond to releasing your finger from.

On the other hand, step 107 is a step for setting a sensitive mode when the vehicle is at a standstill. The step 107 sets the CPU 35 to a mode sensitive to the rising portion of the output signal of the touch switch 5. As a result, when the vehicle is in a stopped state, the CPU 35 is set to a mode responsive to touching the touch switch 5 with a finger.

Next, at step 108, the CPU 35
In the mode set in steps 106 and 107, the oscillator 39 is controlled for a certain period of time to blow the speaker 6. For example, when the process of step 106 is performed, the speaker 6 emits a blow sound when the finger is released from the touch switch 5. When the process of step 107 is performed, the speaker 6 emits a blow sound when the finger touches the touch switch 5.

Next, in steps 109 and 110, C
The PU 35 sends a signal to the receiving unit 4 in the mode set in steps 106 and 107. For example, when the process of step 106 is performed, it is determined in step 109 whether or not the switch image is displayed at the position operated by the operator, and when the determination of YES is made, the finger is pressed from the touch switch 5. Simultaneously with the release, a coded signal is transmitted in step 110. When the process of step 107 is performed, a coded signal is transmitted at the same time when a finger is touched on the touch switch 5.

Although the above embodiment has exemplified the beam type touch switch, the present invention can be applied to other touch switches, for example, a touch switch using a transparent electrode or a membrane switch using pressure-sensitive conductive rubber. It goes without saying that you can do it.

[0017]

According to the present invention, a touch switch having a plurality of operation parts on a plane, a vehicle speed sensor for detecting a vehicle speed and outputting a vehicle speed signal, a vehicle speed signal from the vehicle speed sensor and operation of the touch switch are provided. And a control unit for inputting an output signal of the vehicle.
Vehicle speed determining means for determining whether the vehicle is stationary or stopped, and the vehicle speed determination
Touch switch when running condition is judged by means
Means for setting a mode responsive to releasing a finger from the
When the vehicle speed determining means determines that the vehicle is stopped,
Set the mode to respond to touching your finger on the switch
Means for changing the response mode of the touch switch depending on whether the vehicle is in a running state or a stopped state, thereby preventing erroneous operation during running while stopping the vehicle. This has the effect of improving the responsiveness at times.

[Brief description of the drawings]

FIG. 1 is an electrical block diagram showing a preferred embodiment of the present invention.

FIG. 2 is a flowchart of a program of a CPU shown in FIG. 1;

[Explanation of symbols]

 Reference Signs List 1 display unit 2 matrix unit 3 control unit 4 reception unit 5 touch switch 6 speaker 7 vehicle speed sensor

Claims (1)

(57) [Scope of request for utility model registration] 1. A touch switch having a plurality of operation units on a plane, a vehicle speed sensor detecting a vehicle speed and outputting a vehicle speed signal, a vehicle speed signal from the vehicle speed sensor, and an output signal by operating the touch switch. And a control unit for inputting a vehicle speed , wherein the control unit controls the vehicle based on an input signal from a vehicle speed sensor.
Vehicle speed determining means (10) for determining whether the vehicle is running or stopped.
5) and the traveling state is determined by the vehicle speed determining means (105).
Responds to removing the finger from the touch switch when judged
Means (106) for setting the mode to perform,
Touch when stop state is determined in step (105)
Set the mode to respond to touching the switch with your finger
(107) . A touch switch device comprising: