CN217606412U - Wireless doorbell control system - Google Patents
Wireless doorbell control system Download PDFInfo
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- CN217606412U CN217606412U CN202220668259.3U CN202220668259U CN217606412U CN 217606412 U CN217606412 U CN 217606412U CN 202220668259 U CN202220668259 U CN 202220668259U CN 217606412 U CN217606412 U CN 217606412U
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Abstract
The utility model relates to a wireless control technology field discloses a comparatively stable wireless doorbell control system of signal processing, possesses: a wireless transmission circuit (100) for receiving a touch signal input by an external object and modulating the touch signal into a high-frequency signal capable of being transmitted; the wireless receiving circuit (201), the input end of which is connected with the output end of the wireless transmitting circuit (100) in a communication way, is used for receiving the high-frequency signal output by the wireless transmitting circuit (100), and amplifying and decoding the input high-frequency signal to form a level signal; and the input end of the trigger circuit (202) is coupled to the output end of the wireless receiving circuit (201) and is used for receiving the amplified and decoded level signal, and the trigger circuit (202) controls the on/off state of the doorbell according to the level signal.
Description
Technical Field
The utility model relates to a wireless control technology field, more specifically say, relate to a wireless doorbell control system.
Background
At present, wireless remote control switches are widely used in the fields of industrial control and wireless intelligent home along with the technological progress. The wireless control is formed by combining a transmitter and a receiver, the transmitter encodes a control key of a controller and modulates the encoded control key to a radio frequency signal to transmit a wireless signal, and the receiver decodes the received wireless signal to encode the signal and then decode the encoded signal to obtain a signal corresponding to the control key so as to control a corresponding circuit to work. However, when the existing receiver decodes the signal transmitted by the transmitter, the receiver and the peripheral circuit process the signal transmitted by the transmitter and delay the signal, so that the stability and consistency of the signal obtained by decoding are poor, and intermittent failure occurs in the wireless control circuit.
Therefore, it is an urgent technical problem to be solved by those skilled in the art to avoid delay of the receiver and peripheral circuits in processing the signal transmitted by the transmitter.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model lies in, because the signal that transmitter sent appears postponing in receiver and peripheral circuit processing to the aforesaid of prior art for stability and the uniformity of decoding the acquisition signal are relatively poor, lead to appearing the defect that intermittent type nature became invalid at wireless control circuit, provide a signal processing comparatively stable wireless doorbell control system.
The utility model provides a technical scheme that its technical problem adopted is: a wireless doorbell control system is constructed, comprising:
the wireless transmitting circuit is arranged on the outer side of the door body and used for receiving a touch signal input by an external object and modulating the touch signal into a high-frequency signal capable of being transmitted;
the input end of the wireless receiving circuit is in communication connection with the output end of the wireless transmitting circuit and is used for receiving the high-frequency signal output by the wireless transmitting circuit and amplifying and decoding the input high-frequency signal to form a level signal;
and the input end of the trigger circuit is coupled with the output end of the wireless receiving circuit and used for receiving the amplified and decoded level signal, and the trigger circuit controls the on/off state of the doorbell according to the level signal.
In some embodiments, the trigger circuit includes a main controller and a transistor, and an input end of the main controller is communicatively connected to an output end of the wireless receiving circuit, and is configured to receive the level signal and output a control signal according to the level signal;
the base electrode of the triode is coupled with the output end of the main controller, the collector electrode of the triode is connected with one end of the doorbell, the emitter electrode of the triode is connected with the common end,
the level signal is used for controlling the on/off state of the triode so as to control the on/off state of the doorbell.
In some embodiments, the wireless receiving circuit comprises a radio receiver and a decoder,
the input end of the radio receiver is connected with the output end of the wireless transmitting circuit in a communication way and is used for receiving the high-frequency signal output by the wireless transmitting circuit and amplifying the high-frequency signal,
and the input end of the decoder is connected with the output end of the radio receiver and is used for receiving the amplified high-frequency signal and decoding the high-frequency signal.
In some embodiments, the wireless transmitting circuit includes a transmitting circuit, and the transmitting circuit is configured to receive the touch signal input by an external object, modulate the touch signal into a high-frequency signal capable of being transmitted, and output the high-frequency signal to the radio receiver.
In some embodiments, the wireless transmitting circuit further includes a voltage divider circuit, one end of the voltage divider circuit is connected to one end of the first key switch, and is configured to receive the touch signal output by the first key switch during an operation,
the other end of the voltage division circuit is connected with the input end of the transmitting circuit, and the touch signal is input into the transmitting circuit.
In some embodiments, the electronic device further comprises a voltage reducing circuit, one end of the voltage reducing circuit is connected with a power supply end, and the other end of the voltage reducing circuit is connected with the power supply end of the main controller.
In some embodiments, the voltage-reduction circuit includes a first diode and a second diode connected in series,
the anode of the first diode is connected with the power supply end, and the cathode of the second diode is coupled with the power supply end of the main controller.
In some embodiments, the transistor is selected to be an NPN transistor.
Among the wireless doorbell control system, including the touch-control signal who is used for receiving the external object input to transfer the touch-control signal to wireless transmitting circuit, wireless receiving circuit and the trigger circuit of the high frequency signal that can launch, wherein, wireless receiving circuit is used for receiving the high frequency signal of wireless transmitting circuit output, and amplifies and decodes the high frequency signal of input, in order to form level signal, trigger circuit is used for receiving the level signal of going forward after enlarging and decoding, and according to the on/off state of level signal control doorbell. Compared with the prior art, the trigger circuit is arranged at the rear stage of the wireless receiving circuit, the trigger circuit can control the on/off state of the doorbell according to the input level signal, namely, the input level signal can be processed by the trigger circuit, so that the timeliness and the stability of the input and output signals are improved, and the problem that the wireless control circuit is intermittently failed due to the fact that the receiver and the peripheral circuit process signals sent by the transmitter to delay is solved.
Drawings
The invention will be further explained with reference to the drawings and examples, wherein:
fig. 1 is a schematic diagram of a wireless transmission circuit according to an embodiment of the wireless doorbell control system provided by the present invention;
fig. 2 is a schematic diagram of an embodiment of a wireless receiving circuit and a trigger circuit of a wireless doorbell control system.
Detailed Description
In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
As shown in fig. 1-2, in the first embodiment of the wireless doorbell control system of the present invention, the wireless doorbell control system comprises a wireless transmitting circuit 100, a wireless receiving circuit 201, and a triggering circuit 202 (belonging to the circuit 200).
The wireless transmitting circuit 100 is disposed outside the door body, and is configured to receive a touch signal input by an external object, modulate the touch signal into a high-frequency signal capable of being transmitted, and transmit the high-frequency signal to the wireless receiving circuit 201.
The wireless receiving circuit 201 is configured to receive the high frequency signal output by the wireless transmitting circuit 100, and amplify and decode the input high frequency signal to form a level signal (corresponding to a high level or a low level signal).
Specifically, the input end of the wireless receiving circuit 201 is communicatively connected to the output end of the wireless transmitting circuit 100, and the wireless receiving circuit 201 is configured to receive the high-frequency signal output by the wireless transmitting circuit 100, amplify and decode the input high-frequency signal to form a level signal, and output the level signal to the trigger circuit 202.
The trigger circuit 202 is configured to receive the amplified and decoded level signal, and control an on/off state of the doorbell according to the input level signal.
Specifically, the input end of the trigger circuit 202 is connected to the output end of the wireless receiving circuit 201, and is configured to receive the amplified and decoded level signal, and the trigger circuit 202 controls the on/off state of the doorbell through the level signal.
By using the technical scheme, the trigger circuit 202 is arranged at the rear stage of the wireless receiving circuit 201, and the trigger circuit 202 can control the on/off state of the doorbell according to the input level signal, namely, the input level signal can be processed by the trigger circuit 202, so that the timeliness and the stability of the input and output signals are improved, and the problem that the wireless control circuit is intermittently disabled due to the fact that the receiver and the peripheral circuit process the signal sent by the transmitter and delay is solved.
In some embodiments, in order to improve the stability of the output control signal, a main controller U203 and a transistor VT201 may be disposed in the trigger circuit 202.
The main controller U203 has two trigger terminals, one is a high-level trigger terminal TR11, which is triggered by a high level, the OUT terminal outputs a bird song signal, and the trigger terminal is inactive to a low level; the other is a low-level trigger terminal TR12, and when triggered by a low level, the OUT terminal outputs a control signal, which is inactive to a high level.
The transistor VT201 has a signal amplifying function and is selected to be an NPN-type transistor.
Specifically, an input terminal (corresponding to the low-level trigger terminal TR 12) of the main controller U203 is communicatively connected to an output terminal of the wireless receiving circuit 200, and is configured to receive a level signal and perform an identification process on the level signal to output a control signal.
Further, the base of the transistor VT201 is connected to the output terminal (corresponding to 5 pins) of the main controller U203 through a seventh resistor R204, and is configured to receive the control signal output by the main controller U203.
The collecting electrode of triode VT201 is connected with doorbell BL's one end, and the projecting pole of triode VT201 is connected with the common port, and when the input main control unit U203 level signal was the low level, main control unit U203 output was used for controlling the on/off state's of triode VT201 control signal, and then the on/off state of control doorbell.
In some embodiments, in order to improve the timeliness and stability of the high-frequency signal processing, a radio receiver U201 and a decoder U202 may be disposed in the wireless receiving circuit 201.
The radio receiver U201 is configured to receive the high-frequency signal from the wireless transmission circuit 100 and then perform amplification processing.
The decoder U202 is configured to receive the high-frequency signal output by the radio receiver U201 and then perform decoding processing on the high-frequency signal.
Specifically, the input end of the radio receiver U201 is communicatively connected to the output end of the wireless transmission circuit 100, and is configured to receive the high-frequency signal output by the wireless transmission circuit 100, amplify the high-frequency signal, and output the amplified high-frequency signal to the decoder U202.
The input end of the decoder U202 is connected to the output end of the radio receiver U201, and is configured to receive the amplified high-frequency signal, decode the high-frequency signal so that the center frequency of the high-frequency signal is equal to the modulation frequency of the radio transmitting circuit 100, that is, 1kHz, and output the high-frequency signal to the main controller U203.
In some embodiments, in order to ensure the accuracy of the transmission signal, a transmission circuit 102 may be disposed in the wireless transmission circuit 100, wherein the transmission circuit 102 includes a modulation oscillator U101 and a radio transmitter U102.
The modulation oscillator U101 is configured to output a signal with a square wave frequency f of about 1 kHz.
The radio transmitter U102 is used to modulate the radiated high frequency signal.
Specifically, the modulation oscillator U101 is configured to receive a touch signal input by an external object, process the touch signal to output a signal with a square wave frequency f of about 1kHz, and input the square wave signal to the radio transmitter U102 through the third resistor R103.
The square wave signal is modulated by the radio transmitter U102 to become a high frequency signal which can be transmitted, and then transmitted to the radio receiver U201.
In some embodiments, in order to improve the accuracy of acquiring the touch signal, a voltage divider circuit 101 may be disposed in the wireless transmitter circuit 100, wherein one end of the voltage divider circuit 101 is connected to one end of the first key switch SB101, and is configured to receive the touch signal output when the first key switch SB101 is activated.
The other end of the voltage dividing circuit 101 is connected to one end of the transmitting circuit 102, specifically, the other end of the voltage dividing circuit 101 is connected to an input end (corresponding to 7 pins) of the modulation oscillator U101, an output end of the modulation oscillator U101 is connected to a signal input end of the radio transmitter U102 through a third resistor R103, and the modulation oscillator U101 inputs the processed touch signal to the radio transmitter U102.
Specifically, the voltage divider circuit 101 includes a first resistor R101 and a second resistor R102 connected in series, wherein one end of the first resistor R101 is connected to one end of the first key switch SB101 for receiving the touch signal, and one end of the second resistor R102 is connected to an input end (corresponding to 7 pins) of the modulation oscillator U101 for inputting the processed touch signal to the radio transmitter U102.
In some embodiments, in order to ensure the stability of the operation of the main controller U203, a voltage-reducing circuit may be provided in the control system, wherein one end of the voltage-reducing circuit is connected to the power supply terminal, and the other end of the voltage-reducing circuit is connected to the power supply terminal (corresponding to 8 pins) of the main controller U203.
Further, the voltage reduction circuit comprises a first diode VD201 and a second diode VD202 connected in series, wherein the first diode VD201 and the second diode VD202 are silicon switching diodes, which function to reduce the voltage by their forward diodes so that the main controller U203 can operate under a normal voltage.
Specifically, the anode of the first diode VD201 is connected to the power source terminal, and the cathode of the second diode VD202 is coupled to the power source terminal (corresponding to 8 pins) of the main controller U203.
The specific working principle is as follows: when the transmission key (or the first key switch) SB101 is pressed, a high-frequency signal can be radiated into the air through the built-in antenna. The wireless transmitting circuit 100 is provided with a modulation oscillator U101, a high-frequency signal is converted into a self-excited multivibrator through the modulation oscillator U101, the output square wave frequency f is about 1kHz, the square wave signal is applied to the input end of the wireless transmitting circuit U102 through a third resistor R103, the radiated high-frequency signal is modulated, and then the modulated high-frequency signal is output to the wireless receiving circuit 201.
After receiving the high-frequency signal from the radio transmitter U102, the radio receiver U201 first amplifies the high-frequency signal, and then sends the high-frequency signal to the decoder U202 for decoding, the center frequency of the decoder U202 is mainly determined by the adjustable resistor RP1 and the fourth capacitor C203, the adjustable resistor RP1 is adjusted to make the center frequency equal to the modulation frequency 1kHz of the radio transmitter U102, at this time, the output end (corresponding to 8 pins) of the decoder U202 outputs a low level, and the low level is applied to the low trigger end (corresponding to TR 12) of the main controller U203 to be triggered to output a control signal, and the control signal is amplified by the triode VT201 to drive the speaker BL to sound.
In another triggering mode, when a guest visits, a second key switch SB201 installed on the door frame is pressed, wherein one end of the second key switch SB201 is connected to the power supply terminal, the other end of the second key switch SB201 is connected to the high-level triggering terminal (corresponding to TR 11) of the main controller U203 and one end of a fifth resistor R202, and the other end of the fifth resistor R202 is connected to the common terminal.
At this time, when the second key switch SB201 is touched, the touch signal is inputted to the high-level trigger terminal (corresponding to TR 11) of the main controller U203, and the high level is added to the high-level trigger terminal (corresponding to TR 11) of the main controller U203, so that the high-level trigger terminal TR11 is controlled to be triggered, and then the control signal is outputted, and the speaker BL is amplified and driven to sound through the triode VT201.
The embodiments of the present invention have been described with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, which are only illustrative and not restrictive, and those skilled in the art can make many forms without departing from the scope of the present invention, and these forms are all within the protection scope of the present invention.
Claims (8)
1. A wireless doorbell control system is characterized by comprising:
the wireless transmitting circuit is arranged on the outer side of the door body and used for receiving a touch signal input by an external object and modulating the touch signal into a high-frequency signal capable of being transmitted;
the input end of the wireless receiving circuit is in communication connection with the output end of the wireless transmitting circuit and is used for receiving the high-frequency signal output by the wireless transmitting circuit and amplifying and decoding the input high-frequency signal to form a level signal;
and the input end of the trigger circuit is coupled with the output end of the wireless receiving circuit and used for receiving the amplified and decoded level signal, and the trigger circuit controls the on/off state of the doorbell according to the level signal.
2. The wireless doorbell control system of claim 1,
the trigger circuit comprises a main controller and a triode, wherein the input end of the main controller is in communication connection with the output end of the wireless receiving circuit and is used for receiving the level signal and outputting a control signal according to the level signal;
the base electrode of the triode is coupled with the output end of the main controller, the collector electrode of the triode is connected with one end of the doorbell, the emitter electrode of the triode is connected with the common end,
the control signal is used for controlling the on/off state of the triode so as to control the on/off state of the doorbell.
3. The wireless doorbell control system of claim 2,
the wireless receiving circuit comprises a radio receiver and a decoder,
the input end of the radio receiver is connected with the output end of the wireless transmitting circuit in a communication way and is used for receiving the high-frequency signal output by the wireless transmitting circuit and amplifying the high-frequency signal,
the input end of the decoder is connected with the output end of the radio receiver and is used for receiving the amplified high-frequency signal and decoding the high-frequency signal.
4. The wireless doorbell control system of claim 3,
the wireless transmitting circuit comprises a transmitting circuit, and the transmitting circuit is used for receiving the touch signal input by an external object, modulating the touch signal into a high-frequency signal capable of being transmitted and outputting the high-frequency signal to the radio receiver.
5. The wireless doorbell control system of claim 4,
the wireless transmitting circuit also comprises a voltage dividing circuit, one end of the voltage dividing circuit is connected with one end of the first key switch and is used for receiving the touch signal output when the first key switch acts,
the other end of the voltage division circuit is connected with the input end of the transmitting circuit, and the touch signal is input into the transmitting circuit.
6. The wireless doorbell control system of claim 3,
the voltage reduction circuit is characterized by further comprising a voltage reduction circuit, wherein one end of the voltage reduction circuit is connected with a power supply end, and the other end of the voltage reduction circuit is connected with the power supply end of the main controller.
7. The wireless doorbell control system of claim 6,
the voltage-reducing circuit includes a first diode and a second diode connected in series,
the anode of the first diode is connected with the power supply end, and the cathode of the second diode is coupled with the power supply end of the main controller.
8. The wireless doorbell control system of claim 7,
the triode is selected to be an NPN type triode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220668259.3U CN217606412U (en) | 2022-03-24 | 2022-03-24 | Wireless doorbell control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220668259.3U CN217606412U (en) | 2022-03-24 | 2022-03-24 | Wireless doorbell control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217606412U true CN217606412U (en) | 2022-10-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220668259.3U Active CN217606412U (en) | 2022-03-24 | 2022-03-24 | Wireless doorbell control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217606412U (en) |
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2022
- 2022-03-24 CN CN202220668259.3U patent/CN217606412U/en active Active
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