CN110738811A - Doorbell conversion device and doorbell assembly - Google Patents

Abstract

The invention provides kinds of bell conversion devices and 0 bell assemblies, wherein each bell assembly comprises a bell unit and a bell conversion device, each bell conversion device comprises a power input end, a power output end, two bell trigger ends, a power conversion unit and a trigger signal unit, wherein the power conversion unit is coupled between the power input end and the output end and used for generating a sensing signal in response to the potential state of the power output end, the power input end and the output end are disconnected when the potential state of the power output end is grounded, otherwise, the power input end and the output end are conducted, the trigger signal unit is coupled between the power conversion unit and the two bell trigger ends and used for controlling the two bell trigger ends to be open circuit or short circuit according to the sensing signal, the two bell trigger ends are short circuit when the potential state of the power output end is grounded, and the other two bell trigger ends are open circuit.

Description

Doorbell conversion device and doorbell assembly

technical field

The invention relates to the field of doorbells, in particular to a doorbell conversion device and its doorbell assembly.

Background technique

Existing general households are equipped with doorbell devices for visitors to notify the people who are indoors to open the door. The doorbell device is mainly composed of a doorbell for sounding and a doorbell switch for driving the doorbell to ring, and the main categories are traditional wired doorbells, wireless doorbells and smart doorbells. Among them, traditional wired doorbells are divided into mechanical doorbells and electronic doorbells.

A mechanical doorbell, powered primarily by AC power. The doorbell switch is also a power switch. When the power is turned on and there is enough current passing through, the magnetic reed will be clicked and clicked. The mechanical doorbell mainly uses power as a conduction object.

Electronic doorbell, mainly powered by DC power supply. The doorbell switch is only used to provide a trigger signal, not a power switch. When the trigger signal is provided, it will trigger the doorbell chip to send out a signal to drive the horn or buzzer to make a sound. The electronic doorbell mainly uses the signal as the conduction object.

Wireless doorbells, mainly powered by battery or mains. The main difference from the electronic doorbell is that the doorbell and the doorbell switch are not connected and rely on wireless transmission of signals, so both need to be independently connected to the power supply or use batteries. The wireless doorbell mainly uses wireless signals as the conducting object.

The smart doorbell, in addition to the functions of wired doorbell and wireless doorbell, can also connect to the Internet and take pictures, so that the doorbell can be linked with other mobile devices, allowing users to remotely notify, operate, monitor and record.

Among the above-mentioned main doorbell device categories, electronic doorbells are still commonly used in households at present, and the penetration rate of smart doorbells is not high. Since the Internet of Things is the trend of future household devices, the demand for replacing them with smart doorbells can be expected. However, the electronic doorbell is durable and not easy to be damaged. When the old electronic doorbell can be used normally, it can be replaced with a new smart doorbell, which is cost-intensive and environmentally friendly for users, and greatly reduces the power of replacement. In addition, due to the rapid progress of the Internet of Things, the functions of smart doorbells are constantly being renovated, and the product positioning and functions have not yet stabilized. Therefore, some consumers still have doubts about smart doorbells. However, nowadays electronic doorbells cannot be linked to the Internet of Things. The doorbell still needs to face the aforementioned problems in the future.

SUMMARY OF THE INVENTION

In view of this, the present invention provides a doorbell conversion device and a doorbell assembly.

In one embodiment, a doorbell conversion device includes: a power input terminal, a power output terminal, two doorbell trigger terminals, a power conversion unit and a trigger signal unit. Power input terminal for receiving input power. The power conversion unit, coupled between the power input terminal and the power output terminal, generates a sensing signal in response to the potential state of the power output terminal, and disconnects the power input terminal and the power output terminal when the potential state of the power output terminal is grounded On the contrary, the power input terminal and the power output terminal are connected, so that the power output terminal outputs the output power according to the input power. The trigger signal unit is coupled between the power conversion unit and the two doorbell trigger terminals to control the open circuit or short circuit between the two doorbell trigger terminals according to the sensing signal, wherein when the potential state of the power output terminal is grounded, the two There is a short circuit between the trigger terminals of the doorbell, otherwise, it is an open circuit.

In some embodiments, the power conversion unit includes: a voltage divider circuit and a first switch. The voltage divider circuit is coupled to the power output terminal to divide the voltage according to the potential state of the power output terminal to generate a control signal. The first switch is coupled between the power input terminal and the power output terminal, the first switch includes a control electrode, and the control electrode is coupled to the voltage divider circuit to turn on or off the first switch according to a control signal.

In some embodiments, the power conversion unit further includes a second switch, including a first terminal, a second terminal, and a control terminal, the control terminal is coupled to the voltage divider circuit, the first terminal is coupled to the control electrode of the first switch, and the first terminal is coupled to the control terminal of the first switch. The two terminals are grounded, wherein the first switch is a P-type transistor, and the second switch is turned on when the potential state of the power output terminal is non-grounded, so that the control electrode of the first switch is grounded and the first switch is turned on.

In some embodiments, the power conversion unit further includes a bypass circuit coupled to two terminals of the first switch to transmit the sensing signal, the trigger signal unit includes an isolation coupling component, and the isolation coupling component includes a primary side and a secondary side, The primary side receives the sensing signal, and the secondary side is coupled to two doorbell trigger terminals.

In some embodiments, the isolation coupling component is an optocoupler.

In one embodiment, a doorbell assembly includes: a power input end, a power output end, two doorbell trigger ends, a power conversion unit, a trigger signal unit, and a doorbell unit. Power input terminal for receiving input power. The power conversion unit, coupled between the power input terminal and the power output terminal, generates a sensing signal in response to the potential state of the power output terminal, and disconnects the power input terminal and the power output terminal when the potential state of the power output terminal is grounded On the contrary, the power input terminal and the power output terminal are connected, so that the power output terminal outputs the output power according to the input power. The trigger signal unit is coupled between the power conversion unit and the two doorbell trigger terminals to control the open circuit or short circuit between the two doorbell trigger terminals according to the sensing signal, wherein when the potential state of the power output terminal is grounded, the two There is a short circuit between the trigger terminals of the doorbell, otherwise, it is an open circuit. The doorbell unit is coupled between the power input end and the two doorbell trigger ends, so as to output the doorbell sound when the two doorbell trigger ends are short-circuited, and not output the doorbell sound when the two doorbell trigger ends are open circuit .

To sum up, according to the doorbell conversion device of the present invention, the potential state of the power output terminal can control the short circuit or open circuit between the two doorbell trigger terminals, thereby converting the doorbell switch trigger signal of the smart doorbell to the doorbell ring trigger signal of the electronic doorbell. , and convert the input power of the electronic doorbell to the normal working power of the smart doorbell. Furthermore, according to the doorbell assembly of the embodiment of the present invention, the doorbell conversion device and the doorbell unit are combined to convert the doorbell switch trigger signal of the smart doorbell to the doorbell ringing of the doorbell assembly, and convert the input power of the doorbell assembly to the normal state of the smart doorbell. under working electricity. Therefore, the embodiment of the present invention can effectively link the electronic doorbell and the smart doorbell, and there is no need to install a power supply separately, so that the two can exert the effect of functional addition.

Description of drawings

FIG. 1 is a schematic diagram of an embodiment of a doorbell assembly of the present invention.

FIG. 2 is a circuit diagram of an embodiment of the power conversion device of the present invention.

10 Doorbell assembly 730 Second switch

20 Doorbell conversion device Nc first end

30 Doorbell unit Ne Second end

40 Smart Doorbell Nb Console

50 Doorbell switch 740 Bypass circuit

60 Battery R4 4th resistor

70 Power conversion unit 80 Trigger signal unit

P Input Power 810 Isolated Coupling Assembly

710 Voltage divider circuit 820 Primary side

R1 first resistor 830 secondary side

R2 second resistor R3 third resistor

Ndi voltage divider P input power

720 First switch S1 sensing signal

Ns first pole S2 control signal

Nd second pole N1, N2 doorbell trigger terminal

Ng control pole G1, G2 ground terminal

Detailed ways

FIG. 1 is a schematic diagram of an embodiment of the doorbell assembly 10 of the present invention. The doorbell assembly 10 includes a doorbell conversion device 20 and a doorbell unit 30 . The doorbell conversion device 20 is coupled to the doorbell unit 30 . The doorbell assembly 10 is coupled to the smart doorbell 40 . The smart doorbell 40 includes a doorbell switch 50 . The doorbell switch 50 is coupled to the doorbell conversion device 20 .

FIG. 2 is a circuit diagram of an embodiment of the power conversion device of the present invention. The doorbell conversion device 20 includes a power conversion unit 70, a trigger signal unit 80, a power input terminal Nin, a power output terminal Nout, two doorbell trigger terminals N1, N2, and two ground terminals G1, G2. The power conversion unit 70 is coupled between the power input terminal Nin, the power output terminal Nout, the two ground terminals G1 and G2 and the trigger signal unit 80 . The trigger signal unit 80 is coupled between the power conversion unit 70 and the two doorbell trigger terminals N1 and N2.

In some embodiments of the present invention, please refer to FIGS. 1 and 2 , the power input terminal Nin receives the input power P. FIG. The power conversion unit 70 generates a sensing signal S1 in response to the potential state of the power output terminal Nout. The sensing signal S1 can be used by the trigger signal unit 80 to control an open circuit or a short circuit between the two doorbell trigger terminals N1 and N2. The smart doorbell 40 is coupled between the power output terminal Nout and the ground terminal G2. In a normal state, the potential state of the power output terminal Nout is not grounded. When the doorbell switch 50 of the smart doorbell 40 is triggered, it will cause the potential state of the power output terminal Nout to change to ground. When the potential state of the power output terminal Nout is grounded (the doorbell switch 50 is triggered), the two doorbell trigger terminals N1 and N2 are short-circuited; on the contrary, when the potential state of the power output terminal Nout is not grounded, the two doorbells are short-circuited. There is an open circuit between the trigger terminals N1 and N2. Therefore, the doorbell unit 30 will respond to the state (ie, open circuit or short circuit) between the trigger terminals of the doorbell to determine whether to sound the doorbell. When the two doorbell trigger terminals N1 and N2 are short-circuited, the doorbell unit 30 outputs the doorbell ringing, and when the two doorbell trigger terminals N1 and N2 are open-circuited, the doorbell ringing is not output. So that when the doorbell switch 50 of the smart doorbell 40 is triggered, the doorbell unit 30 outputs the doorbell ringing; under normal conditions, the doorbell unit 30 does not output the doorbell ringing.

In some embodiments of the present invention, the trigger signal unit 80 controls an open circuit or a short circuit between the two doorbell trigger terminals N1 and N2 according to whether the voltage value of the sensing signal S1 exceeds a threshold value.

In some embodiments of the present invention, the trigger signal unit 80 controls an open circuit or a short circuit between the two doorbell trigger terminals N1 and N2 according to whether the current value of the sensing signal S1 exceeds a threshold.

In some embodiments of the present invention, please refer to FIGS. 1 and 2 , the smart doorbell 40 further includes a battery 60 . When the potential state of the power output terminal Nout is grounded (ie, when the doorbell switch 50 is triggered), the power conversion unit 70 disconnects the electrical connection between the power input terminal Nin and the power output terminal Nout. On the contrary, under normal conditions, the power conversion unit 70 conducts between the power input terminal Nin and the power output terminal Nout, so that the power output terminal Nout outputs power to the smart doorbell 40 according to the input power P. Therefore, the battery 60 of the smart doorbell 40 will obtain charging power, so that when the doorbell switch 50 is triggered, although the power conversion unit 70 disconnects the electrical connection between the power input terminal Nin and the power output terminal Nout, the smart doorbell 40 can still Operating power is maintained by the battery 60 .

In some embodiments of the present invention, the doorbell conversion device 20 is coupled to the doorbell unit 30 by using the power input terminal Nin and the ground terminal G1 as contacts. The power input terminal Nin receives the input power P, and provides it to the doorbell conversion device 20 and the doorbell unit 30 as working power at the same time.

In some embodiments of the present invention, please refer to FIG. 2 , the power conversion unit 70 includes a voltage divider circuit 710 and a first switch 720 . The voltage divider circuit 710 is coupled to the power output terminal Nout. The first switch 720 is coupled between the power input terminal Nin and the power output terminal Nout. The voltage dividing circuit 710 includes a voltage dividing terminal Ndi for generating a control signal S2 by dividing the voltage at the voltage dividing terminal Ndi according to the potential state of the power output terminal Nout. The first switch 720 includes a control electrode Ng, and the control electrode Ng turns on or off the first switch 720 according to the change of the control signal S2.

In some embodiments of the present invention, please refer to FIG. 2 , the voltage divider circuit 710 includes a first resistor R1 and a second resistor R2 . The first resistor R1 is coupled between the power output terminal Nout and the second resistor R2. The second resistor R2 is coupled between the first resistor R1 and the ground terminal GND. The voltage dividing terminal Ndi is between the first resistor R1 and the second resistor R2. When the potential state of the power output terminal Nout is grounded, the potential of the control signal S2 is grounded. On the contrary, in a normal state, the potential of the control signal S2 is the divided potential of the first resistor R1 and the second resistor R2.

In some embodiments of the present invention, please refer to FIG. 2 , the power conversion unit 70 further includes a second switch 730 . The second switch 730 includes a first terminal Nc and a control terminal Nb, the first terminal Nc is coupled to the control electrode Ng of the first switch 720 , and the control terminal Nb is coupled to the voltage dividing terminal Ndi of the voltage dividing circuit 710 . The second switch 730 is used to turn on or off the second switch 730 according to the control signal S2, so that the first terminal Nc generates a control potential. The first switch 720 turns the first switch 720 on or off according to the control potential.

In some embodiments of the present invention, please refer to FIG. 2 , the first switch 720 is a P-type transistor. The second switch 730 includes a second terminal Ne, and the second terminal Ne is grounded. In a normal state, the second switch 730 is turned on when the potential state of the power output terminal Nout is not grounded, so that the control potential is grounded. The first switch 720 is grounded according to the control potential so that the first switch 720 is turned on.

In some embodiments of the present invention, please refer to FIG. 2 , the power conversion unit 70 further includes a third resistor R3 . The third resistor R3 is coupled between the power input terminal Nin and the control electrode Ng of the first switch 720 . In a normal state, the third resistor R3 provides a potential difference between the power input terminal Nin and the control electrode Ng of the first switch 720 .

In some embodiments of the present invention, please refer to FIG. 2 , the first switch 720 is a P-type transistor, including a first electrode Ns, a second electrode Nd and a control electrode Ng. The second switch 730 is an NPN type bipolar transistor, and includes a first terminal Nc, a second terminal Ne and a control terminal Nb. The first pole Ns of the first switch 720 is coupled to the power input terminal Nin, the second pole Nd is coupled to the power output terminal Nout, and the control pole Ng is coupled to the first terminal Nc of the second switch 730 . The control terminal Nb of the second switch 730 is coupled to the voltage dividing terminal Ndi of the voltage dividing circuit 710 , the first terminal Nc is coupled to the control electrode Ng of the first switch 720 , and the second terminal Ne is grounded. The third resistor R3 is coupled between the power input terminal Nin and the control electrode Ng of the first switch 720 .

When the potential state of the power output terminal Nout is grounded, because the potentials of the control terminal Nb and the second terminal Ne of the second switch 730 are both grounded, the second switch 730 is turned off, and the gate of the first switch 720 is substantially insulated. , so that the third resistor R3 does not substantially flow through the current, resulting in the potential of the control electrode Ng and the first electrode Ns of the first switch 720 (ie, the two ends of the third resistor R3 ) are both the potential of the power input terminal Nin, so the first A switch 720 is turned off, which also disconnects the electrical connection between the power input terminal Nin and the power output terminal Nout. On the contrary, under normal conditions, the potential difference between the control terminal Nb and the second terminal Ne of the second switch 730 makes the second switch 730 turn on, the first terminal Nc is substantially grounded, and the third resistor R3 flows through current, causing the first There is a potential difference between the control pole Ng and the first pole Ns of the switch 720, so the first switch 720 is turned on, so that the power input terminal Nin and the power output terminal Nout are connected, so that the power output terminal Nout outputs the output power according to the input power P output power.

In some embodiments of the present invention, please refer to FIG. 2 , the power conversion unit 70 includes a bypass circuit 740 coupled between two ends of the first switch 720 and the trigger signal unit 80 to transmit the sensing signal S1 to the trigger signal unit 80.

In some embodiments of the present invention, please refer to FIG. 2 , the bypass circuit 740 includes a fourth resistor R4 coupled between the first switch 720 and the trigger signal unit 80 . Under normal conditions, the fourth resistor R4 can reduce the sensing signal S1 entering the trigger signal unit 80 to prevent the trigger signal unit 80 from being damaged.

In some embodiments of the present invention, please refer to FIG. 2 , the trigger signal unit 80 includes an isolation coupling element 810 , the isolation coupling element 810 includes a primary side 820 and a secondary side 830 , the primary side 820 is coupled to the bypass circuit 740 , and After receiving the sensing signal S1, the secondary side 830 is coupled to the two doorbell trigger terminals N1 and N2.

In some embodiments of the present invention, please refer to FIG. 2 , when the potential state of the power output terminal Nout is grounded, the input power P input from the power input terminal Nin can only be sent to the power output through the bypass circuit 740 and the isolation coupling element 810 The terminal Nout (potential is grounded), so the sensing signal S1 is strengthened. Since the sensing signal S1 is strengthened, the sensing signal S1 flowing through the primary side 820 of the isolation coupling element 810 meets its default threshold, so the secondary side 830 of the isolation coupling element 810 is turned on, making the connection between the two doorbell trigger terminals N1 and N2 is turned on. On the contrary, in a normal state, since the first switch 720 is turned on, the potential difference between the power input terminal Nin and the power output terminal Nout is reduced, so the sensing signal S1 is weakened. Since the sensing signal S1 is weakened, the sensing signal S1 flowing through the primary side 820 of the isolation coupling element 810 does not meet its preset threshold, so the secondary side 830 of the isolation coupling element 810 is disconnected, so that the two doorbell trigger terminals N1, disconnected between N2.

In some embodiments of the present invention, the first switch 720 may be a P-type transistor.

In some embodiments of the present invention, the first switch 720 includes a P-type transistor and a diode, and the diode is connected across the first electrode Ns and the second electrode Nd of the P-type transistor to prevent the P-type transistor from being damaged.

In some embodiments of the present invention, the first switch 720 includes a P-type transistor and a diode, and the diode is connected between the first electrode Ns and the control electrode Ng to prevent the P-type transistor from being damaged.

In some embodiments of the present invention, the first switch 720 includes a P-type transistor and a plurality of diodes, and the plurality of diodes are connected between the first electrode Ns and the control electrode Ng to prevent the P-type transistor from being damaged.

In some embodiments of the present invention, the second switch 730 may be an NPN type bipolar transistor.

In some embodiments of the present invention, the trigger signal unit 80 may be an optical coupler.

In some embodiments of the present invention, the trigger signal unit 80 may be a relay.

In some embodiments of the present invention, the doorbell unit 30 includes a doorbell processing circuit and a speaker. The doorbell processing circuit is coupled between the two doorbell trigger terminals N1 and N2 and the speaker. When there is a short circuit between the two doorbell trigger terminals N1 and N2, the doorbell processing circuit is driven to output the doorbell ringing signal to the speaker, and the speaker outputs the doorbell ringing according to the doorbell ringing signal. On the contrary, when there is an open circuit between the two doorbell trigger terminals N1 and N2, the doorbell chip is not driven, so there is no output doorbell ringing.

To sum up, according to the doorbell conversion device of the present invention, the potential state of the power output terminal Nout can control the short circuit or open circuit between the two doorbell trigger terminals N1 and N2, thereby converting the doorbell switch trigger signal of the smart doorbell 40 to an electronic type. The doorbell ringing trigger signal, and convert the input power P of the electronic doorbell to the normal working power of the smart doorbell. Furthermore, according to the doorbell assembly 10 of the embodiment of the present invention, the doorbell conversion device 20 and the doorbell unit 30 are combined to convert the doorbell switch trigger signal of the smart doorbell 40 into the doorbell ringing of the doorbell assembly 10 , and convert the doorbell switch of the doorbell assembly 10 . The input power P is the working power of the smart doorbell 40 in a normal state. Therefore, in the embodiment of the present invention, the electronic doorbell and the smart doorbell 40 can be effectively linked, and there is no need to install a power supply separately, so that the two can exert the effect of functional addition.

Claims (10)

1. a doorbell conversion device, is characterized in that, comprises: Power input terminal for receiving input power; power output; Two doorbell trigger terminals; A power conversion unit, coupled between the power input terminal and the power output terminal, generates a sensing signal in response to the potential state of the power output terminal, and disconnects the power supply when the potential state of the power output terminal is grounded The connection between the input terminal and the power supply output terminal, on the contrary, the conduction between the power supply input terminal and the power supply output terminal is made, so that the power supply output terminal outputs output power according to the input power; and a trigger signal unit, coupled between the power conversion unit and the two doorbell trigger ends, to control the two doorbell trigger ends to be open or short circuit according to the sensing signal, wherein the potential state of the power output end When it is grounded, it is a short circuit between the two doorbell trigger ends, otherwise, it is an open circuit. 2. The doorbell conversion device according to claim 1, wherein the power conversion unit comprises: a voltage divider circuit, coupled to the power output terminal, to divide the voltage according to the potential state of the power output terminal to generate a control signal; and a first switch, coupled between the power input terminal and the power output terminal, the first switch includes a control pole, the control pole is coupled to the voltage divider circuit, so as to make the first switch conduct or turn on according to the control signal disconnect. 3. The doorbell conversion device of claim 2, further comprising a second switch, comprising a first end, a second end and a control end, the control end is coupled to the voltage divider circuit, the first end is coupled to the control electrode of the first switch, and the second terminal is grounded, wherein the first switch is a P-type transistor, and the second switch is turned on when the potential state of the power output terminal is non-grounded, so that the first switch is turned on. The control electrode of a switch is grounded to turn on the first switch. 4 . The doorbell conversion device of claim 2 , wherein the power conversion unit further comprises a bypass circuit coupled to both ends of the first switch to transmit the sensing signal, and the trigger signal unit comprises: 5 . The isolation coupling component includes a primary side and a secondary side, the primary side receives the sensing signal, and the secondary side is coupled to the two doorbell trigger terminals. 5 . The doorbell conversion device of claim 4 , wherein the isolation coupling component is an optical coupler. 6 . 6. A doorbell assembly, characterized in that, comprising: Power input terminal for receiving input power; power output; Two doorbell trigger terminals; A power conversion unit, coupled between the power input terminal and the power output terminal, generates a sensing signal in response to the potential state of the power output terminal, and disconnects the power supply when the potential state of the power output terminal is grounded The connection between the input terminal and the power supply output terminal, on the contrary, the conduction between the power supply input terminal and the power supply output terminal is made, so that the power supply output terminal outputs output power according to the input power; and a trigger signal unit, coupled between the power conversion unit and the two doorbell trigger ends, to control the two doorbell trigger ends to be open or short circuit according to the sensing signal, wherein the potential state of the power output end When it is grounded, it is a short circuit between the two doorbell trigger ends, otherwise, it is an open circuit. The doorbell unit is coupled between the power input end and the two doorbell trigger ends, so as to output the doorbell ringing when the two doorbell trigger ends are short-circuited, and when the two doorbell trigger ends are open circuit, Do not output the doorbell ringing. 7. The doorbell assembly of claim 6, wherein the power conversion unit comprises: a voltage divider circuit, coupled to the power output terminal, to divide the voltage according to the potential state of the power output terminal to generate a control signal; and a first switch, coupled between the power input terminal and the power output terminal, the first switch includes a control pole, the control pole is coupled to the voltage divider circuit, so as to make the first switch conduct or turn on according to the control signal disconnect. 8. The doorbell assembly of claim 7, further comprising a second switch, comprising a first end, a second end and a control end, the control end is coupled to the voltage divider circuit, the first end is coupled to the control electrode of the first switch, and the second terminal is grounded, wherein the first switch is a P-type transistor, and the second switch is turned on when the potential state of the power output terminal is non-grounded, so that the first switch is turned on. The control electrode of a switch is grounded to turn on the first switch. 9 . The doorbell assembly of claim 7 , wherein the power conversion unit further comprises a bypass circuit coupled to both ends of the first switch to transmit the sensing signal, the trigger signal unit comprising: 10 . The isolation coupling component includes a primary side and a secondary side, the primary side receives the sensing signal, and the secondary side is coupled to the two doorbell trigger terminals. 10. The doorbell assembly of claim 6, wherein the isolation coupling component is an optical coupler.