TWI760175B - Plc non-contact 4×4 keyboard - Google Patents

Abstract

This invention is related to a PLC non-contact 4×4 keyboard, which is arranged in a 4×4 matrix with 16 sensor holes, and two sets of light sensor devices are provided in each sensor hole. The light sensor device consists of a light emitter and a light receiver, the two light emitters are placed on the inner wall of the sensor holes, and the light emitted by the two light emitters is staggered up and down. The two light receivers are set opposite to the two light emitters on the inner wall of the induction aperture, so that the two light receivers receive the light emitted by the two light emitters respectively, and then the light sensors in the same line and in the same induction aperture are connected to the control module in a matrix manner. Accordingly, the user's fingers can operate the output control without touching the physical keys during operation, which can prevent the user's fingers from being contaminated with various viruses and germs and avoid the phenomenon of contamination of various viruses and germs on the physical keys, thus preventing the occurrence of the situation that affects the user's health and increasing the practical efficacy in its overall implementation and use.

Description

Non-contact 4×4 keyboard for PLC

The present invention relates to a non-contact 4×4 keyboard for PLC, and more particularly to a non-contact 4×4 keyboard in which the user’s fingers can perform operation and output control without touching the physical keys during operation and use, so that the user’s fingers can be prevented from sticking to them. All kinds of viruses and germs and avoid the phenomenon of sticking all kinds of viruses and germs on the physical buttons, thereby preventing the occurrence of situations that affect the user's health, and adding more practical features to its overall implementation and use.

Press, programmable logic controller (Programmable Logic Controller, PLC) is an electronic system with a microprocessor for digital operation operation, specially designed for application in an industrial environment, it uses a programmable memory for its Internal storage program to execute user-oriented instructions such as logical operations, sequence control, timing, counting and arithmetic operations, control instructions can be loaded into memory for storage and execution at any time, and various types of digital or analog input/output Electrical or electronic signals to control or supervise various types of machinery, electrical systems or production processes.

As for the 4×4 keyboard used by the programmable logic controller (PLC), please refer to the existing structure diagram shown in Fig. 6. The main reason is that the keyboard (3) is arranged in a 4×4 matrix. There are a total of 16 buttons, and each button is provided with a push switch (31), so that the two contacts of each push switch (31) are respectively connected to each of the programmable logic controller (PLC) (32) in a matrix form. At the pin (321), so that during operation, after pressing the button, the push switch (31) corresponding to the button will be touched together, so that the two contacts of the push switch (31) form a conducting state , and the trigger signal can be respectively transmitted to the two pins (321) of the programmable logic controller (32) connected to the two contacts of the push switch (31), so as to complete the relevant operation input control, such as: when the push switch (31) is pressed When the key 1 of the keyboard (3) is pressed, the push switch (31) corresponding to the key 1 will be triggered, so that the programmable switch (31) connected to the two contacts of the push switch (31) corresponding to the key 1 The two pins (321) of X1 and Y20 of the logic controller (32) form a short circuit for triggering, and the programmable logic controller (32) can determine that the button 1 is pressed and triggered.

However, although the above-mentioned 4×4 keyboard can achieve the expected effect for the user to press and touch, it is also found during its actual operation and use that in recent years, due to the spread of the new coronavirus and the air filled with various kinds of Such germs, all kinds of viruses and germs will be attached to each key of the keyboard, so that when the user presses the key with his finger to operate, all kinds of viruses and germs attached to each key will be attached to the key. On the fingers of the user, the situation that affects the health of the user occurs, so that there is still room for improvement in the overall structural design.

The reason is that the inventors, in view of this, adhere to the rich design development of the related industry for many years. Based on the development and actual production experience, the existing structure and defects will be studied and improved, and a non-contact 4×4 keyboard of PLC is provided, in order to achieve the purpose of better practical value.

The main purpose of the present invention is to provide a non-contact 4×4 PLC keyboard, which is mainly used in the operation and use process, the user's fingers can perform operation output control without touching the physical keys, so as to prevent the user's fingers from sticking Attach various viruses and germs and avoid the phenomenon of attaching various viruses and germs to the physical buttons, thereby preventing the occurrence of situations that affect the user's health, and adding practical features to its overall implementation and use. .

The main purpose and effect of the non-contact 4×4 keyboard of the PLC of the present invention are achieved by the following specific technical means: it mainly includes a keyboard; wherein: the keyboard is arranged in a 4×4 matrix with 16 There are two sets of light-sensing devices in each of the sensing holes. The light-sensing devices are composed of a light emitter and a light receiver. The two light emitters are arranged on the inner wall of the sensing hole, and the two light sensors The light emitted by the light emitter is dislocated up and down, and the two light receivers are respectively arranged on the inner wall of the sensing hole opposite to the two light emitters, so that the two light receivers receive the two light emitters respectively. The emitted light then causes the light sensing devices in the sensing holes in the same row and the same row to be connected to the control module in a matrix manner.

Another purpose and effect of the non-contact 4×4 keyboard of the PLC of the present invention is achieved by the following specific technical means: it mainly includes a keyboard; wherein: the keyboard is arranged in a 4×4 matrix with 16 There are two sensing holes, and horizontal and vertical perforations are formed corresponding to the sensing holes in the horizontal and vertical directions of the keyboard. Each of the transverse through holes and each of the longitudinal through holes is provided with a light sensing device, and the light sensing device is composed of a light transmitter and a light receiver. And each of the light receivers is arranged corresponding to the other end of each of the transverse through holes and each of the longitudinal through holes, so that the light emitted by each of the light emitters can pass through each of the transverse through holes and each of the longitudinal through holes to be opposite to each other at the other end. The light receiver receives, and then each of the light sensing devices is connected to the control module.

In a preferred embodiment of the non-contact 4×4 keyboard of the PLC of the present invention, the optical receiver is an optical coupling switch.

A preferred embodiment of the non-contact 4×4 keyboard of the PLC of the present invention, wherein the light transmitter and the light receiver of the two adjacent light sensing devices of the keyboard are arranged adjacent to each other to avoid signal interference situation occurs.

1: Keyboard

11: Induction hole

12: Light sensor device

121: Light Emitter

122: Optical receiver

2: Keyboard

21: Induction hole

22: Lateral perforation

23: Longitudinal perforation

24: Light sensor device

241: Light Emitter

242: Optical Receiver

3: Keyboard

31: Press the switch

32: Programmable logic controller

321: pin

The first figure: the top view structure schematic diagram of the present invention

The second figure: the side view sectional structure schematic diagram of the present invention

The third figure: a schematic diagram of a partial three-dimensional structure of the present invention

Figure 4: A schematic top view sectional view of another embodiment of the present invention

Figure 5: A schematic side view sectional structure diagram of another embodiment of the present invention

Figure 6: Schematic diagram of the existing structure

For a more complete and clear disclosure of the technical content, the purpose of the invention and the effect achieved by the present invention, it is described in detail below, and please refer to the disclosed drawings and drawing numbers: First, please refer to The first figure is a schematic top view of the structure of the present invention and the second figure is a side view of the cross-sectional structure of the present invention. As shown, the present invention includes a keyboard (1); wherein: the keyboard (1) is in a 4×4 matrix. There are 16 sensing holes (11) arranged in a row. Please refer to the partial three-dimensional structure schematic diagram of the present invention in Figure 3. Two sets of light sensing devices (12) are arranged in each of the sensing holes (11). The light sensing device (12) is composed of a light transmitter (121) and a light receiver (122), the light receiver (122) can be an optical coupling switch, and the two light transmitters (121) are arranged in the sensing hole (11) the inner wall, and the light emitted by the two light emitters (121) is dislocated up and down, and the two light receivers (122) are respectively arranged opposite to the two light emitters (121). The inner wall of the sensing hole (11) allows the two light receivers (122) to receive the light emitted by the two light emitters (121) respectively, and then makes the two light receivers (122) in the same row and the same line in each of the sensing holes (11) The light sensing device (12) is connected to the control module in a matrix manner.

In this way, in the operation and use of the present invention, the light emitters (121) of the light sensing devices (12) arranged in the sensing holes (11) of the keyboard (1) are all Lights are emitted outward, and each of the light receivers (122) disposed opposite to each of the light emitters (121) receives the light emitted by each of the light emitters (121), and the user inserts a finger into the light receiver (122). When in any of the sensing holes (11), the finger will shield the light emitted by the two light emitters (121) of the two sets of the light sensing devices (12) arranged in the sensing hole (11), The two light receivers (122) disposed opposite to the two light transmitters (121) cannot receive light, and at this time, the two light receivers (122) will transmit signals to the control module, and due to the The light sensing devices (12) in the sensing holes (11) in the same row and in the same row on the keyboard (1) are connected in a matrix manner, so that the control module can pass through the two light receivers (122) respectively. The position of the intersection point is known by the position, and the position of the sensing hole (11) into which the user's finger is inserted is calculated, so as to achieve the corresponding operation output control.

In addition, please refer to the schematic diagram of the top sectional structure of another embodiment of the present invention in FIG. 4 and the schematic diagram of the cross-sectional structure of the side view of another embodiment of the present invention in FIG. 5 . The keyboard (2) can also be 16 sensing holes (21) are arranged in a 4×4 matrix, and transverse perforations (22) and longitudinal perforations (23) are formed in the keyboard (2) in both the lateral and longitudinal directions corresponding to the sensing holes (21). Each of the transverse perforations (22) and each of the longitudinal perforations (23) are arranged in an up and down dislocation shape in each of the sensing holes (21), corresponding to each of the transverse perforations (22) and each of the longitudinal perforations (23) There is a light sensing device (24), the light sensing device (24) is composed of a light transmitter (241) and a light receiver (242), the light receiver (242) can be an optical coupling switch, so that each light emission The device (241) corresponds to each of the transverse perforations (22) and each of the longitudinal perforations (23) One end is arranged, and each of the light receivers (242) is arranged corresponding to the other end of each of the horizontal through holes (22) and each of the longitudinal through holes (23), and the light of the two adjacent light-sensing devices (24) can also be arranged. The transmitter (241) and the light receiver (242) are arranged adjacent to each other to avoid the occurrence of signal interference, so that the light emitted by each of the light transmitters (241) can pass through each of the transverse through holes (22) And each of the longitudinal through holes (23) is received by each of the light receivers (242) disposed opposite to each other at the other end, and then each of the light-sensing devices (24) is connected to the control module.

In operation and use, the light emitters (241) of the light sensing devices (24) of the keyboard (2) all emit light outward, and the light emitters (241) emit light. The light can pass through each of the transverse perforations (22) and each of the longitudinal perforations (23) to be received by each of the light receivers (242) disposed opposite to each other at the other end, and the user inserts his finger into any of the sensing holes (21). ), the finger will shield the light from the two light emitters (241) passing through the horizontal through hole (22) and the longitudinal through hole (23) respectively in the sensing hole (21) to shield the light from the two light emitters (241). The two optical receivers (242) disposed opposite to the optical transmitter (241) cannot receive light, and at this time, the two optical receivers (242) will transmit signals to the control module, so that the control module can The position of the intersection point is known through the respective positions of the two light receivers (242), and the position of the sensing hole (21) into which the user's finger is inserted is calculated, thereby achieving corresponding operation output control.

From the above, it can be seen from the description of the use and implementation of the present invention that, compared with the prior art means, the present invention is mainly used in the operation and use process, and the user's finger can perform the operation output control without touching the physical button. , so as to prevent the user's fingers from adhering to various viruses and germs, and to prevent various viruses and germs from adhering to the physical buttons. In order to prevent the occurrence of the above phenomenon, and then prevent the occurrence of the situation that affects the health of the user, the overall implementation and use of the product will increase the practical efficacy characteristics.

However, the foregoing embodiments or drawings do not limit the product structure or usage of the present invention, and any appropriate changes or modifications made by those with ordinary knowledge in the technical field should be regarded as not departing from the scope of the present invention.

To sum up, the embodiment of the present invention can indeed achieve the expected use effect, and the specific structure disclosed is not only not seen in similar products, but also has not been disclosed before the application, which fully complies with the provisions of the patent law In accordance with the requirements, I would like to file an application for an invention patent in accordance with the law, and I sincerely request that it be reviewed and granted the patent.

1: Keyboard

11: Induction hole

12: Light sensor device

121: Light Emitter

122: Optical receiver

Claims (4)

A non-contact 4×4 keyboard of PLC, which mainly includes a keyboard; wherein: The keyboard has 16 sensing holes arranged in a 4×4 matrix, and two sets of light sensing devices are arranged in each sensing hole. The light sensing devices are composed of a light transmitter and a light receiver. The light emitter is arranged on the inner wall of the sensing hole, and the light emitted by the two light emitters is dislocated up and down, and the two light receivers are respectively arranged in the sensing hole opposite to the two light emitters wall, so that the two light receivers respectively receive the light emitted by the two light transmitters, and then the light sensing devices in the sensing holes in the same row and the same row are connected to the control module in a matrix manner. A non-contact 4×4 keyboard of PLC, which mainly includes a keyboard; wherein: The keyboard has 16 sensing holes arranged in a 4×4 matrix, and transverse perforations and longitudinal perforations are formed corresponding to the sensing holes in the horizontal and vertical directions of the keyboard. Each of the sensing holes is in a dislocation shape up and down, and corresponding to each of the horizontal through holes and each of the longitudinal through holes are provided with a light-sensitive device, the light-sensitive device is composed of a light transmitter and a light receiver, so that each of the light emission Each of the light receivers is disposed corresponding to one end of each of the transverse through holes and each of the longitudinal through holes, and each of the light receivers is disposed corresponding to the other end of each of the transverse through holes and each of the longitudinal through holes, so that the light emitted by each of the light emitters can pass through each of the The transverse through holes and each of the longitudinal through holes are received by the light receivers disposed opposite to each other at the other end, and then each of the light sensing devices is connected to the control module. The non-contact 4×4 keyboard of PLC according to claim 1 or 2, wherein the optical receiver is an optical coupling switch. The non-contact 4×4 keyboard of PLC as claimed in claim 2, wherein the light transmitter and the light receiver of the two adjacent light sensing devices of the keyboard are arranged adjacent to each other to avoid signal interference. situation happens.

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