Bell control system

Abstract

A buzzer control system includes a power supply circuit, a first control circuit, a second control circuit and a trigger circuit. The power supply circuit is configured to provide a driving voltage. The first control circuit includes a first filter and a first switching element. The first filter is coupled to the power supply circuit to receive the driving voltage. The first switching element is connected in parallel to a first buzzer. The second control circuit includes a second filter and a second switching element. The second filter is coupled to the power supply circuit to receive the driving voltage. The second switching element is connected in series to a second buzzer. The trigger circuit is coupled to the power supply circuit, the first control circuit and the second control circuit. When the trigger circuit is triggered, the driving voltage is changed to turn off the first switching element and turn on the second switching element. Accordingly, the buzzer control system can be applied to control different specifications or types of buzzers.

Description

Technical Field

[0001] This invention relates to electric bell control technology, and in particular to an electric bell control system. Background Technology

[0002] Existing doorbell control circuits can only support a single AC input voltage, such as 9V, 16V, or 24V. This single control circuit can only support doorbells that match the corresponding input voltage, resulting in poor compatibility because different types of doorbells operate at different voltages. For example, digital and mechanical doorbells cannot share the same control circuit, meaning there are compatibility issues. Therefore, separate control circuits need to be designed for each type of doorbell. Furthermore, when the doorbell device needs repair or replacement, the user must also replace the control circuit, which is inconvenient in use. Therefore, a more compatible doorbell control circuit is needed. Summary of the Invention

[0003] This invention relates to an electric bell control system, comprising a power supply circuit, a first control circuit, a second control circuit, and a trigger circuit. The power supply circuit provides a driving voltage. The first control circuit includes a first filter and a first switching element, wherein the first filter is coupled to the power supply circuit to receive the driving voltage, and the first switching element is connected in parallel to a first electric bell. The second control circuit includes a second filter and a second switching element. The second filter is coupled to the power supply circuit to receive the driving voltage, and the second switching element is connected in series to a second electric bell. The trigger circuit is coupled to the power supply circuit, the first control circuit, and the second control circuit. When the trigger circuit is triggered, the driving voltage is changed to turn off the first switching element and turn on the second switching element.

[0004] In one embodiment, the first filter includes a first filter resistor and a first filter capacitor. The first filter resistor is coupled between the power supply circuit and the control terminal of the first switching element. The first filter capacitor is coupled between the control terminal of the first switching element and a reference potential.

[0005] In one embodiment, the first filter further includes a first bleed resistor. A first terminal of the first bleed resistor is coupled between a first filter resistor and a first filter capacitor, and a second terminal of the first bleed resistor is coupled to a reference potential.

[0006] In one embodiment, the driving voltage changes according to the impedance relationship between the trigger circuit, the first control circuit, and the second control circuit.

[0007] In one embodiment, the impedance of the trigger circuit decreases when the trigger circuit is triggered.

[0008] In one embodiment, the power supply circuit includes a receiving circuit and a rectifier circuit. The rectifier circuit is coupled to the receiving circuit. A trigger circuit is coupled to the voltage divider node between the receiving circuit and the rectifier circuit.

[0009] In one embodiment, the second control circuit further includes a one-way switch connected in parallel with the second switching element and coupled to the power supply node between the receiving circuit and the rectifier circuit.

[0010] In one embodiment, the first filter and the second filter are used to generate a first control voltage and a second control voltage, respectively, and the first control voltage and the second control voltage are different.

[0011] In one embodiment, when the trigger circuit is not triggered, the second control voltage is insufficient to turn on the second switching element.

[0012] In one embodiment, the first switching element is an optocoupler relay.

[0013] Therefore, by utilizing the capacitors and resistors in the filter, the input voltage can be stabilized, and the actual output voltage value of the control circuit can be adjusted, so that the electric bell control system can be applied to control electric bells of different specifications or types. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of an electric bell control system according to a partial embodiment of the present invention.

[0015] Figure 2 This is a schematic diagram of an electric bell control system according to a partial embodiment of the present invention. Detailed Implementation

[0016] The following describes several embodiments of the present invention with reference to the accompanying drawings. For clarity, many practical details will be described in the following description. However, it should be understood that these practical details are not intended to limit the invention. That is, in some embodiments of the invention, these practical details are not essential. Furthermore, for the sake of simplicity, some conventional structures and elements will be shown in the drawings in a simple schematic manner.

[0017] In this document, when an element is referred to as a “connection” or “coupled,” it may mean an “electrical connection” or “electrical coupling.” “Connection” or “coupled” can also be used to indicate that two or more elements operate or interact with each other. Furthermore, although terms such as “first,” “second,” etc., are used herein to describe different elements, these terms are only used to distinguish elements or operations described using the same technical terms. Unless the context clearly indicates otherwise, these terms do not specifically refer to or imply any order or sequence, nor are they intended to limit the invention.

[0018] Figure 1This is a schematic diagram of a bell control system 100 according to a partial embodiment of the present invention. The bell control system 100 includes a first control circuit 110, a second control circuit 120, a power supply circuit 130, and a trigger circuit 140, for controlling a first bell B11 and a second bell B12. In one embodiment, the first bell B11 and the second bell B12 are different types of bell devices; for example, the first bell is a mechanical bell that generates a ringing sound through its internal physical structure, while the second bell is a digital bell that generates a ringing sound through its internal buzzer.

[0019] The power supply circuit 130 provides a drive voltage Vd to drive the first control circuit 110 and the second control circuit 120. In one embodiment, the power supply circuit 130 includes a receiving circuit 131 (e.g., a power converter or adapter) and a rectifier circuit 132 (e.g., a full-bridge rectifier circuit). The receiving circuit 131 is coupled to a power supply terminal (e.g., AC mains or a battery) to generate an AC input voltage based on the power supplied. The rectifier circuit 132 is coupled to the receiving circuit 131 to convert the AC input voltage into a DC drive voltage Vd.

[0020] In one embodiment, the receiving circuit 131 and the rectifier circuit 132 have two power supply nodes N11 and N12 to form an AC power supply path. This AC power supply path is used to provide AC input voltage to the first bell B11 and the second bell B12, details of which will be described in subsequent paragraphs.

[0021] The first control circuit 110 is coupled to the power supply circuit 130 and includes a first filter 111 and a first switching element 112. The first filter 111 is coupled to the rectifier circuit 132 to receive the drive voltage Vd provided by the rectifier circuit 132. The first switching element 112 is coupled to the first filter 111 and connected in parallel to the first electric bell B11.

[0022] The first switching element 112 may be an optocoupled relay, but the present invention is not limited thereto. In some embodiments, the first switching element 112 is also coupled to a resistor RA, the impedance of which is much smaller than that of the first electric bell B11.

[0023] In one embodiment, the first filter 111 includes a first filter resistor R11 and a first filter capacitor C11. The first filter resistor R11 is coupled between the power supply circuit 130 and the control terminal of the first switching element 112. The first filter capacitor C11 is coupled between the control terminal of the first switching element 112 and a reference potential (e.g., ground). The first filter 111 is used to filter the DC drive voltage Vd (e.g., a half-wave signal), making the voltage signal output by the first filter 111 more stable, and at the same time, making the range of input voltages that the electric bell control system 100 can receive wider.

[0024] In some embodiments, the first filter 111 further includes a first bleeder resistor R12. A first terminal of the first bleeder resistor R12 is coupled between the first filter resistor R11 and the first filter capacitor C11, while a second terminal of the first bleeder resistor R12 is coupled to a reference potential (e.g., ground). When the first switching element 112 is not turned on, the first bleeder resistor R12 is used to bleed the voltage in the first filter capacitor C11, preventing damage to the first switching element 112.

[0025] like Figure 1 As shown, the first switching element 112 and the first electric bell B11 are connected in parallel and coupled to the power supply node N12. Therefore, when the first switching element 112 is turned on and forms a short circuit, current will not flow through the first electric bell B11, and the first electric bell B11 is in a state where it cannot be started. On the other hand, when the first switching element 112 is turned off and forms an open circuit, the first electric bell B11 will be able to operate normally.

[0026] Similarly, the second control circuit 120 is coupled to the power supply circuit 130 and includes a second filter 121 and a second switching element 122. The second filter 121 is coupled to the rectifier circuit 132 to receive the drive voltage Vd provided by the rectifier circuit 132. The second switching element 122 is coupled to the second filter 121 and the second electric bell B12. The second switching element 122 may be an optocoupler relay, but the present invention is not limited thereto.

[0027] In one embodiment, the second filter 121 includes a second filter resistor R13, a second bleeder resistor R14, and a second filter capacitor C12. Since the operation of the second filter 121 is the same as that of the first filter 111, it will not be described in detail here.

[0028] like Figure 1 As shown, the second switching element 122 is connected in series with the second bell B12 and power supply nodes N11 and N12. Therefore, when the second switching element 122 is turned off to form an open circuit, the second bell B12 is in a state where it cannot be started. On the other hand, when the second switching element 122 is turned on to form a short circuit, the second bell B12 will be able to operate normally.

[0029] In one embodiment, the second control circuit 120 further includes a one-way switch 123. The one-way switch 123 is connected in parallel with the second switching element 122 and coupled to the power supply node N12. When the second switching element 122 is turned off, the second electric bell B12 is in a non-startable state because the AC input voltage cannot fully pass through the one-way switch 123.

[0030] The trigger circuit 140 is coupled to the first control circuit 110, the second control circuit 120, and the power supply circuit 130. For example... Figure 1As shown, the trigger circuit 140 is coupled to the voltage divider node N13 between the receiving circuit 131 and the rectifier circuit 132. According to the voltage divider theorem, the input voltage provided by the receiving circuit 131 is distributed to the trigger circuit 140 and the rectifier circuit 132 according to the impedance relationship between the first control circuit 110, the second control circuit 120, and the trigger circuit 140. In other words, the magnitude of the input voltage received by the rectifier circuit 132 and the magnitude of the output drive voltage Vd will change according to the impedance relationship between the first control circuit 110, the second control circuit 120, and the trigger circuit 140. For example, when the impedance of the trigger circuit 140 decreases, the input voltage received by the rectifier circuit 132 will increase.

[0031] In one embodiment, the trigger circuit 140 is a control switch for the electric bell (e.g., a button on the electric bell). When the trigger circuit 140 is triggered, a short-circuit switch 141 within the trigger circuit 140 is turned on, reducing the overall impedance of the trigger circuit 140. At this time, the input voltage supplied to the rectifier circuit 132 and the drive voltage Vd output by the rectifier circuit 132 both increase. The first control circuit 110 turns off the first switching element 112, and the second control circuit 120 turns on the second switching element 122, so that the first electric bell B11 and the second electric bell B12 are in a normally operating state.

[0032] Specifically, such as Figure 1 As shown, after the rectifier circuit 132 generates a drive voltage Vd based on the input voltage, the first filter 111 and the second filter 121 generate a first control voltage V1 and a second control voltage V2, respectively, to control the first switching element 112 and the second switching element 122. Since the first switching element 112 and the second switching element 122 may have different switching voltages depending on their type or configuration, the magnitude of the control voltage generated by the filter can be controlled by designing the impedance ratio of multiple resistors in the filter (e.g., the first filter resistor R11 and the first bleeder resistor R12). In other words, in one embodiment, the first control voltage V1 and the second control voltage V2 generated by the first filter 111 and the second filter 121 can have different voltage magnitudes to control different types of switching elements.

[0033] The electric bell control system 100 of the present invention can generate a corresponding voltage to control the switching element by designing the values ​​of the resistors and capacitors in the filter. Therefore, it can be applied to a wide range of input voltages; for example, the input voltage received by the rectifier circuit 132 can be between 9 volts and 24 volts. Accordingly, the electric bell control system 100 has better compatibility and application flexibility, and can be used to control mechanical or digital electric bell devices.

[0034] In addition to stabilizing the voltage, the first filter 111 / second filter 121 can also serve as a delay circuit. When the first switching element 112 / second switching element 122 is in a switching state, the instantaneous change in voltage will generate a surge current. The first filter 111 / second filter 121 can receive the surge current and prevent damage to the first switching element 112 / second switching element 122.

[0035] Although Figure 1 In the circuit structure shown, the electric bell control system 100 is equipped with a first electric bell B11 and a second electric bell B12. However, in practical applications, manufacturers can configure the number of electric bells according to their needs. For example, the first control circuit 110 is used to generate a 9-volt voltage to control the first switching element 112 / first electric bell B11; the second control circuit 120 is used to generate a 24-volt voltage to control the second switching element 122 / second electric bell B12. Therefore, manufacturers can produce the same circuit structure (i.e., Figure 1 The electric bell control system 100 shown is configured with a first electric bell B11 and / or a second electric bell B12 according to product requirements to improve design and production costs.

[0036] On the other hand, in some embodiments, the first switching element 112 may be normally closed, that is, it remains in a conducting state when not powered. The second switching element 122 may be normally open, that is, it remains in a closed state when not powered. When the trigger circuit 140 is not triggered, the first control voltage V1 provided by the first filter 111 to the first switching element 112 is insufficient to turn off the first switching element 112, and the second control voltage V2 provided by the second filter 121 to the second switching element 122 is insufficient to turn on the second switching element 122.

[0037] like Figure 1 As shown, when the trigger circuit 140 is not triggered, its impedance is high. According to the voltage divider law, the input voltage received by the rectifier circuit 132 is low. Therefore, the first switching element 112 remains on, while the second switching element 122 remains off. At this time, the first bell B11 will not operate because the first switching element 112 is short-circuited; the second bell B12 is coupled to the power supply circuit 130 through the one-way switch 123 and cannot fully receive the AC input voltage, so it will also not operate.

[0038] When the trigger circuit 140 is triggered, its impedance decreases, and according to the voltage divider law, the input voltage received by the rectifier circuit 132 will increase. Therefore, the first switching element 112 will turn off according to the first control voltage V1, and the second switching element 122 will turn on according to the second control voltage V2. At this time, both the first bell B11 and the second bell B12 can operate normally.

[0039] Figure 2 This is a schematic diagram of an electric bell control system 200 according to a partial embodiment of the present invention. The electric bell control system 200 includes a first control circuit 210, a second control circuit 220, a power supply circuit 230, and a trigger circuit 240. The first control circuit 210 includes a first filter 211 and a first switching element 212; the second control circuit 220 includes a second filter 221, a second switching element 222, and a one-way switch 223; the power supply circuit 230 includes a receiving circuit 231 and a rectifier circuit 232. Figure 2 The first switching element 212 and the second switching element 222 shown are optocoupled relays. Because the operation of the first control circuit 210, the power supply circuit 230, and the trigger circuit 240 is different from... Figure 1 The embodiments shown are the same, so they will not be described again here.

[0040] Figure 2 The electric bell control system 200 shown does not include a first electric bell and a second electric bell. Operators / users can connect the first electric bell in parallel to the first switching element 212 and couple the second electric bell between the second switching element 222 and the power supply circuit 230 according to their needs.

[0041] In this embodiment, the second control circuit 220 includes a plurality of second switching elements 222. Each second switching element 222 is coupled to the second filter 221 and is connected in parallel with a one-way switch 223. Therefore, the second control voltage generated by the second filter 221 can be used to control the plurality of second switching elements 222 / second bells.

[0042] The elements, method steps, or technical features in the foregoing embodiments can be combined with each other, and are not limited to the order of the text description or the order of the drawings in this invention.

[0043] Although the present invention has been disclosed above by way of embodiments, it is not intended to limit the present invention. Those skilled in the art can make various modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

[0044] [Symbol Explanation]

[0045] 100: Electric Bell Control System

[0046] 110: First control circuit

[0047] 111: First Filter

[0048] 112: First switching element

[0049] 120: Second control circuit

[0050] 121: Second Filter

[0051] 122: Second switching element

[0052] 123: One-way switch

[0053] 130: Power supply circuit

[0054] 131: Receiving circuit

[0055] 132: Rectifier circuit

[0056] 140: Trigger circuit

[0057] 141: Short-circuit switch

[0058] 200: Electric Bell Control System

[0059] 210: First control circuit

[0060] 211: First Filter

[0061] 212: First switching element

[0062] 220: Second control circuit

[0063] 221: Second Filter

[0064] 222: Second switching element

[0065] 223: One-way switch

[0066] 230: Power supply circuit

[0067] 231: Receiving Circuit

[0068] 232: Rectifier circuit

[0069] 240: Trigger circuit

[0070] B11: First Electric Bell

[0071] B12: Second electric bell

[0072] C11: First filter capacitor

[0073] C12: Second filter capacitor

[0074] N11: Power supply node

[0075] N12: Power supply node

[0076] N13: Voltage divider node

[0077] RA: Resistance

[0078] R11: First filter resistor

[0079] R12: First bleed resistor

[0080] R13: Second filter resistor

[0081] R14: Second bleed resistor

[0082] Vd: Driving voltage

[0083] V1: First control voltage

[0084] V2: Second control voltage.

Claims

1. An electric bell control system, characterized in that, Include: Power supply circuit, used to provide drive voltage; The first control circuit includes a first filter and a first switching element, wherein the first filter is coupled to the power supply circuit to receive the driving voltage, and the first switching element is connected in parallel to the first electric bell. The second control circuit includes a second filter and a second switching element, wherein the second filter is coupled to the power supply circuit to receive the drive voltage, and the second switching element is connected in series with the second electric bell. as well as A trigger circuit is coupled to the power supply circuit, the first control circuit, and the second control circuit, wherein when the trigger circuit is triggered, the drive voltage is changed to turn off the first switching element and turn on the second switching element.

2. The electric bell control system according to claim 1, characterized in that, The first filter includes: The first filter resistor is coupled between the power supply circuit and the control terminal of the first switching element; and The first filter capacitor is coupled between the control terminal of the first switching element and the reference potential.

3. The electric bell control system according to claim 2, characterized in that, The first filter also includes: A first bleed resistor, the first end of which is coupled between the first filter resistor and the first filter capacitor, and the second end of which is coupled to the reference potential.

4. The electric bell control system according to claim 1, characterized in that, The driving voltage changes according to the impedance relationship between the trigger circuit, the first control circuit, and the second control circuit.

5. The electric bell control system according to claim 4, characterized in that, When the trigger circuit is triggered, the impedance of the trigger circuit decreases.

6. The electric bell control system according to claim 1, characterized in that, The power supply circuit includes: Receiver circuit; and A rectifier circuit is coupled to the receiving circuit, wherein the trigger circuit is coupled to the voltage divider node between the receiving circuit and the rectifier circuit.

7. The electric bell control system according to claim 6, characterized in that, The second control circuit also includes a one-way switch connected in parallel with the second switching element and coupled to the power supply node between the receiving circuit and the rectifier circuit.

8. The electric bell control system according to claim 1, characterized in that, The first filter and the second filter are used to generate a first control voltage and a second control voltage, respectively, and the first control voltage and the second control voltage are different.

9. The electric bell control system according to claim 8, characterized in that, When the trigger circuit is not triggered, the second control voltage is insufficient to turn on the second switching element.

10. The electric bell control system according to claim 1, characterized in that, The first switching element is an optocoupler relay.

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