CN217240685U

CN217240685U - Microswitch key and remote control receiving multiplexing circuit, circuit board and electrical equipment

Info

Publication number: CN217240685U
Application number: CN202123185276.6U
Authority: CN
Inventors: 王雪松; 梅晓辉; 麻文斌; 郑维彦
Original assignee: Beijing Glopro Optoelectronic Technology Co ltd
Current assignee: Beijing Glopro Optoelectronic Technology Co ltd
Priority date: 2021-12-17
Filing date: 2021-12-17
Publication date: 2022-08-19
Anticipated expiration: 2031-12-17

Abstract

The utility model discloses a multiplex circuit, circuit board and electrical equipment are received with remote control to micro-gap switch button. The multiplexing circuit of the micro switch key and the remote control receiving comprises a control unit (1), a remote control receiving unit (2) and an audion unit (3), wherein the control unit (1) is electrically connected with a base electrode of the audion unit (3), and the control unit (2) is electrically connected with a collector electrode of the audion unit (3) so that the audion unit (3) is isolated from the control unit (1) and the wireless receiving module unit (2). The microswitch key and the remote control receiving multiplexing circuit respectively realize control and energy control through the physical isolation function of the triode unit (3) and the microswitch and the wireless receiving module without mutual influence.

Description

Microswitch key and remote control receiving multiplexing circuit, circuit board and electrical equipment

Technical Field

The utility model belongs to the technical field of power supply circuit technique and specifically relates to a multiplex circuit, circuit board and electrical equipment are received with remote control to micro-gap switch button.

Background

On the operation panel of the handheld night vision detector, a matrix key composed of micro switches is usually provided for triggering the detector device to realize the corresponding function of the key. Such as triggering a photograph, triggering a video recording, triggering a mode switch, etc. These keys are usually composed of micro-switches or membrane switches.

In the prior art, the keys used on the operation panel of the detection instrument are all single micro switches, a layer of silicon rubber is sleeved on the micro switches, holes are formed in the panel, and the keys and the silicon rubber are embedded in the silicon rubber. Some detection instruments use membrane switches, which are not good in appearance and technology and are easy to damage. When the observation instrument is held by hands for observation, if the key is pressed by hands forcefully, the detection instrument shakes, especially when a remote target is observed, or the target is enlarged and observed, the shaking is more obvious, and the observation is not very beneficial.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a micro-gap switch button and remote control receiving multiplex circuit, this micro-gap switch button and remote control receiving multiplex circuit pass through triode unit's physical isolation micro-gap switch and wireless receiving module and realize control ability separately, do not influence each other.

For realizing the purpose of the utility model, the utility model adopts the following technical scheme:

according to an aspect of the utility model provides a micro-gap switch button and remote control receiving multiplex circuit include the control unit, remote control receiving unit and triode unit, wherein, the control unit electricity is connected the base of triode unit, the control unit electricity is connected the collecting electrode of triode unit to make triode unit keep apart the control unit with remote control receiving unit.

According to the utility model discloses an embodiment, wherein, the control unit includes controller and micro-gap switch, wherein, the input of controller includes 3 pins, first controller pin ground connection, and the power end is connected to second controller pin electricity, and 3 rd controller pin electricity is connected micro-gap switch's one end, just micro-gap switch's other end ground connection, 3 rd controller pin electricity is connected the branch circuit electricity that forms behind the micro-gap switch is connected the base of triode unit.

According to the utility model discloses an embodiment, wherein, the controller includes a n pin, and n is for being greater than 3 integer, wherein, 3 rd controller pin extremely the nth controller pin is connected respectively first micro-gap switch extremely n-2 micro-gap switch, and the first branch road to the n-2 branch road parallel connection back ground connection that just forms.

According to the utility model discloses an embodiment, wherein, the remote control receiving unit includes wireless receiving module, wireless receiving module includes 3 pins, and wherein, first wireless receiving pin ground connection, the power end is connected to second wireless receiving pin electricity, and third wireless receiving pin electricity is connected the collecting electrode of triode unit.

According to the utility model discloses an embodiment, wherein, the triode unit includes triode Q, first resistance R and second resistance R ', wherein, triode Q's collecting electrode electricity is connected first resistance R's one end, first resistance R's other end electricity is connected the power end, triode Q's projecting pole ground connection, second resistance R's one end electricity is connected triode Q's projecting pole, other end electricity connect in triode Q base with on the circuit between the third wireless receiving pin.

According to the utility model discloses an embodiment, wherein, wireless receiving module includes n wireless receiving pins, the triode unit is n, wherein, the nth wireless receiving pin the nth triode unit forms the n-2 multiplexing circuit with the nth controller pin.

According to the utility model discloses an embodiment, wherein, triode Q is NPN type triode, first resistance R's resistance is 4.7k omega, second resistance R's resistance is 1k omega.

According to another aspect of the present invention, a circuit board is provided. The remote control system comprises the microswitch buttons and a remote control receiving multiplexing circuit.

According to another aspect of the present invention, a home appliance is provided. Which comprises the circuit board.

The utility model provides an embodiment has following advantage or beneficial effect:

the utility model provides a multiplex circuit is received with remote control to micro-gap switch button. The microswitch key and the remote control receiving multiplexing circuit use a plurality of microswitches for triggering a plurality of control functions, when the key is pressed down, a control signal is transmitted to the controller, and the controller detects the level change and executes the corresponding function. Meanwhile, a 433M or 315M wireless receiving module is added, the module is provided with a plurality of IO ports, high and low level states of a plurality of keys are simulated, an NPN type triode is used and isolated from a circuit where the micro switch is located, when the receiving module receives a certain remote control instruction sent by a transmitting end, the IO corresponding to the receiving module generates a high level, the IO controls the triode to work in a saturation region, the level of a signal line for multiplexing the remote control keys and the micro switch keys is pulled down, and a detection signal is provided for a controller.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic circuit diagram of a microswitch push-button and remote control receiving multiplexing circuit according to an embodiment of the present invention.

Wherein the reference numerals are as follows:

1. a control unit; 2. a remote control receiving unit; 3. and the triode unit.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus a detailed description thereof will be omitted.

The terms "a," "an," "the," "said" are used to indicate the presence of one or more elements/components/etc.; the terms "comprising" and "having" are intended to be inclusive and mean that there may be additional elements/components/etc. other than the listed elements/components/etc.

As shown in fig. 1, fig. 1 shows a schematic circuit diagram of a microswitch push-button and remote control receiving multiplexing circuit provided by the present invention.

The utility model discloses micro-gap switch button and remote control receiving multiplex circuit include control unit 1, remote control receiving unit 2 and triode unit 3, and wherein, triode unit 3's base is connected to 1 electricity of control unit, and triode unit 3's collecting electrode is connected to 2 electricity of control unit to make triode unit 3 keep apart control unit 1 and remote control receiving unit 2.

Wherein, a triode unit 3 can be arranged between the control unit 1 and the remote control receiving unit 2. The isolation function of the triode is utilized, so that the two units are not influenced mutually.

In a preferred embodiment of the present invention, the control unit 1 comprises a controller and a micro switch, wherein the input terminal of the controller comprises 3 pins, the first controller pin is grounded, the second controller pin is electrically connected to the power terminal, the 3 rd controller pin is electrically connected to one end of the micro switch, the other end of the micro switch is grounded, and the 3 rd controller pin is electrically connected to the branch circuit formed after the micro switch and electrically connected to the base of the triode unit 3. The controller comprises n pins, wherein n is an integer larger than 3, the 3 rd controller pin to the nth controller pin are respectively connected with the first microswitch to the n-2 th microswitch, and a formed first branch to the n-2 th branch are connected in parallel and then grounded.

As shown in fig. 1, n is preferably 10. P1 is the interface terminal of controller, and has 8 level signals (CTL1-CTL8), a power interface, and a ground line for supporting 3.3V or 5V power supply. K1-K8 are 8 micro switch keys, when the keys are pressed, the left end and the right end of the keys are conducted, and CTL1-CTL8 signals generate low level.

In a preferred embodiment of the present invention, the remote control receiving unit (2) comprises a wireless receiving module, the wireless receiving module comprises 3 pins, wherein the first wireless receiving pin is grounded, the second wireless receiving pin is electrically connected to the power source, and the third wireless receiving pin is electrically connected to the collector of the triode unit 3. The triode unit 3 comprises a triode Q, a first resistor R and a second resistor R ', wherein a collector of the triode Q is electrically connected with one end of the first resistor R, the other end of the first resistor R is electrically connected with a power supply end, an emitting electrode of the triode Q is grounded, one end of the second resistor R' is electrically connected with an emitting electrode of the triode Q, and the other end of the second resistor R is electrically connected with a circuit between a base electrode of the triode Q and a third wireless receiving pin. The line receiving module comprises n wireless receiving pins, the number of the triode units 3 is n, wherein the nth wireless receiving pin, the nth triode unit 3 and the nth controller pin form an n-2 multiplexing circuit. The triode Q is an NPN type triode, the resistance value of the first resistor R is 4.7k omega, and the resistance value of the second resistor R' is 1k omega.

As shown in fig. 1, IC1 is preferably a 433M or 315M wireless receiving module having 8 IO ports, a power supply port, and a ground. 8 IO ports indicate that 8 control instructions are received, when a certain control instruction is received, the IO port corresponding to the control instruction generates a high level until the control instruction disappears, and the IO port recovers to the low level. The power supply supports 3.3V power supply or 5V power supply. 8 triode circuits for receiving the key signal with the remote control and carrying out reverse processing, and multiplex with the micro-gap switch key, make two kinds of keys not influence each other, but can both control same CTL signal again.

Preferably, taking the first multiplexing circuit as an example:

in the normal state, the CTL1 signal is in the high state because it is acted on by the pull-up resistor R1.

(1) When the K1 key is manually clicked, the two ends of the K1 key are conducted, the CTL1 signal is conducted with the ground wire, and the CTL1 signal is changed into low level. When the hand is released, CTL1 resumes high-level priming again. At this time, the signal change of the CTL1 does not affect the wireless receiving key due to the isolation effect of the triode.

(2) When the wireless receiving module IC1 does not receive the control command, the signal RF _ Pin1 of the IO Pin No. 1 is at a low level, the transistor Q1 operates in the cut-off region, the collector and the emitter are not turned on, and the signal CTL1 is at a high level.

When the wireless receiving module IC1 receives a remote control command of IO No. 1, the Pin signal RF _ Pin1 becomes high level, the transistor Q1 operates in a saturation region, the collector is connected to the emitter, the CTL1 signal is connected to the ground, and the CTL1 signal becomes low level. When the remote command disappears, the CTL1 signal returns to a high level.

The high-low level signal generated by the remote control key does not influence the key circuit of the microswitch due to the physical isolation characteristic of the microswitch.

The utility model discloses circuit board, receive multiplexing circuit including aforementioned micro-gap switch button and remote control.

The utility model discloses household electrical appliances, including aforementioned circuit board.

The circuit board and the household appliance comprising the circuit board realize two control modes of key control and wireless remote control through the microswitch key and the remote control receiving multiplexing circuit, and do not influence each other.

The utility model discloses a multiplexing circuit is received with the remote control to the micro-gap switch button has used a plurality of micro-gap switches for trigger a plurality of control functions, when the button is pressed, for controller conveying control signal, the controller detects the level change, then carries out corresponding function. Meanwhile, a 433M or 315M wireless receiving module is added, the module is provided with a plurality of IO ports, high and low level states of a plurality of keys are simulated, an NPN type triode is used and isolated from a circuit where the micro switch is located, when the receiving module receives a certain remote control instruction sent by a transmitting end, the IO corresponding to the receiving module generates a high level, the IO controls the triode to work in a saturation region, the level of a signal line for multiplexing the remote control keys and the micro switch keys is pulled down, and a detection signal is provided for a controller.

In the embodiments of the present invention, the term "plurality" means two or more unless explicitly defined otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly and include, for example, fixed connections, removable connections, or integral connections. The specific meaning of the above terms in the embodiments of the present invention can be understood by those skilled in the art according to specific situations.

In the description of the embodiments of the present invention, it should be understood that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience of description and simplification of the description of the embodiments of the present invention, and do not indicate or imply that the device or unit indicated by the terms must have a specific direction, be constructed and operated in a specific orientation, and therefore, should not be construed as limiting the embodiments of the present invention.

In the description herein, the description of the terms "one embodiment," "a preferred embodiment," etc. means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the embodiments of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes may be made to the embodiment of the present invention by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the embodiments of the present invention should be included in the protection scope of the embodiments of the present invention.

Claims

1. A microswitch button and remote control receiving multiplexing circuit is characterized by comprising: the triode unit comprises a control unit (1), a remote control receiving unit (2) and a triode unit (3), wherein the control unit (1) is electrically connected with a base electrode of the triode unit (3), and the control unit (1) is electrically connected with a collector electrode of the triode unit (3) so that the triode unit (3) can isolate the control unit (1) and the remote control receiving unit (2).

2. The multiplexing circuit of micro-switch key and remote control receiver according to claim 1, wherein the control unit (1) comprises a controller and a micro-switch, wherein the input terminal of the controller comprises 3 pins, the first controller pin is grounded, the second controller pin is electrically connected to a power supply terminal, the 3 rd controller pin is electrically connected to one end of the micro-switch, the other end of the micro-switch is grounded, and a branch formed after the 3 rd controller pin is electrically connected to the micro-switch is electrically connected to the base of the triode unit (3).

3. The multiplexing circuit of claim 2, wherein the controller comprises n pins, n is an integer greater than 3, wherein the 3 rd to nth controller pins are connected to the first to nth-2 microswitches, respectively, and the first to nth-2 branches are connected in parallel and then grounded.

4. The microswitch button and remote control receiving multiplexing circuit according to claim 3, wherein the remote control receiving unit (2) comprises a wireless receiving module, the wireless receiving module comprises 3 pins, wherein a first wireless receiving pin is grounded, a second wireless receiving pin is electrically connected with a power supply end, and a third wireless receiving pin is electrically connected with a collector of the triode unit (3).

5. The microswitch keystroke and remote control receiving multiplexing circuit of claim 4, wherein the triode unit (3) comprises a triode Q, a first resistor R and a second resistor R ', wherein a collector of the triode Q is electrically connected with one end of the first resistor R, the other end of the first resistor R is electrically connected with the power supply end, an emitter of the triode Q is grounded, one end of the second resistor R' is electrically connected with the emitter of the triode Q, and the other end is electrically connected with a circuit between the base of the triode Q and the third wireless receiving pin.

6. The multiplexing circuit of micro-switch key and remote control receiver according to claim 5, wherein the wireless receiving module comprises n wireless receiving pins, and the number of the triode unit (3) is n, wherein the nth wireless receiving pin, the nth triode unit (3) and the nth controller pin form an n-2 multiplexing circuit.

7. The multiplexing circuit of claim 5, wherein the transistor Q is an NPN transistor, the first resistor R has a resistance of 4.7k Ω, and the second resistor R' has a resistance of 1k Ω.

8. A circuit board comprising a microswitch button as in any one of claims 1 to 7 and a remote control reception multiplexing circuit.

9. An electrical device comprising the circuit board of claim 8.