Intelligent timer

Abstract

The utility model discloses an intelligent timer, which comprises a shell and a timing circuit arranged in the shell, the timing circuit comprises a timing chip, an operating circuit, a driving circuit, a power supply circuit and an indicating circuit, and the timing chip, the operating circuit, the driving circuit, the power supply circuit and the indicating circuit are mutually connected. The indicating circuit is characterized in that the indicating circuit comprises an LED lamp bank, a plurality of LED lamps are arranged in the LED lamp bank, the brightness of each LED lamp is different, each LED lamp is connected with a pin of a timing chip after being connected with a resistor in series in a one-to-one correspondence mode, and the resistance values of the resistors connected in series are different. According to the intelligent timer provided by the utility model, the indicating circuit is arranged to be the LED lamp row, and the brightness of each LED lamp is different, so that the requirement of a user on the brightness of the indicating lamp can be effectively met.

Description

Technical Field

[0001] The utility model relates to a timer, more specifically to an intelligent timer. Background Art

[0002] The power supply circuit of the timer is mostly complex. For example, Chinese patent CN 202394140 U discloses a time-based circuit temperature control timer, whose power supply circuit needs to be equipped with multiple electrolytic capacitors for filtering, and also needs to be equipped with an RC circuit to realize the effect of resistance-capacitance voltage reduction. However, since it relies on resistors and capacitors for voltage reduction, and needs to reduce the voltage from 220V to 5-24V, it has high requirements on the withstand voltage of the capacitor. Therefore, ordinary chip capacitors are not suitable for this power supply circuit, and polyester capacitors are needed. The cost and volume of polyester capacitors exceed the cost and volume of chip capacitors. In addition, electrolytic capacitors are also needed for filtering, and the cost and volume of electrolytic capacitors are also large. Therefore, the power supply circuit will occupy a large position on the circuit board. For some timers that pursue small size, the excessive size it occupies will affect the volume of the timer, and it is difficult to meet the design requirements of small-volume timers.

[0003] For this purpose, there is a utility model patent with patent number 2023214330463 in the prior art, which is named a timer. The utility model patent discloses that: by using a step-down circuit composed of two chip resistors, the power supply can be reduced from 220V to the required low voltage, and a half-wave rectifier circuit is used to output the voltage VCC. The circuit structure is simple, and the timing function can be realized by using smaller or fewer components to reduce the cost. Correspondingly, an indication circuit is also provided in the scheme, and an independent indication function is realized by connecting two LED indicator lights in parallel and the two pins of the timing chip through the LED indicator lights. However, the indication circuit is connected to the power supply after connecting two LED indicator lights in parallel and then a resistor in series. Since the output voltage of the timing chip pin is fixed, the brightness of the two LED indicator lights can only be fixed. Therefore, the timer cannot meet the requirements of different customers for the brightness of the indicator lights. Utility Model Content

[0004] In view of the deficiencies in the prior art, the purpose of the utility model is to provide an intelligent timer that can meet the requirements of different customers for the brightness of indicator lights.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an intelligent timer, comprising a shell and a timing circuit arranged in the shell, the timing circuit comprising a timing chip, an operating circuit, a driving circuit, a power circuit and an indication circuit, the timing chip, the operating circuit, the driving circuit, the power circuit and the indication circuit are interconnected, characterized in that: the indication circuit comprises an LED lamp row, the LED lamp row has a plurality of LED lamps, the brightness of each LED lamp is different, each of the LED lamps is respectively connected in series with a resistor and connected to the pin of the timing chip, wherein the resistance values ​​of each resistor in series are different.

[0006] As a further improvement of the utility model, the power supply circuit includes:

[0007] A voltage-dropping resistor group, the voltage-dropping resistor group includes a resistor R1, a resistor R2 and a resistor R4, one end of the resistor R1 and the resistor R4 are connected to an external live wire and a neutral wire respectively, one end of the resistor R2 is connected to the resistor R1, and the other end is connected to a resistor R3 and then connected to a timing chip;

[0008] A half-bridge rectifier, the half-bridge rectifier comprising a diode D1 and a voltage regulator D2, wherein the anode of the diode D1 is connected to the resistor R2, the cathode is connected to the cathode of the voltage regulator D2, and the anode of the voltage regulator D2 is connected to the resistor R4;

[0009] The filter circuit includes a capacitor C1 and a resistor R8, wherein the capacitor C1 and the resistor R8 are connected in parallel, one end of which is connected to a connection node between the cathode of the diode D1 and the cathode of the voltage regulator tube D2, and the other end is grounded. As a further improvement of the utility model, the housing includes an upper cover and a lower cover, the upper cover is arranged on the lower cover, an air hole for gas to pass through is provided on the upper side of the upper cover, and an installation hole for installing a mosquito coil bottle is provided on the lower side of the lower cover, and the installation hole is arranged opposite to the air hole.

[0010] As a further improvement of the utility model, a silicone button is fixed to the side of the lower cover, and the operating circuit includes an operating button. When the timing circuit is installed in the lower cover, the operating part of the operating button is arranged in the silicone button.

[0011] As a further improvement of the utility model, the LED lamp row includes a lamp holder and a snap-in plate, the LED lamp patch is arranged in the lamp holder, the snap-in plate is fixedly mounted on the lower side of the lamp holder, one side of the lamp holder is transparent, and when the lamp holder is fixedly mounted on the lower cover, this side penetrates the lower cover to the outside, and a card is fixed on the snap-in plate, and the card hooks the side wall of the lower cover.

[0012] As a further improvement of the present invention, the card is an arc-shaped sheet structure, one end of which is fixedly mounted on the clamping plate, and the other end is tilted upward to form a clamping end that abuts against the side wall of the lower cover.

[0013] The beneficial effect of the utility model is that, through the setting of the shell and the timing circuit, an intelligent timed mosquito-repellent liquid heater can be simply and effectively realized, and by setting the indicating circuit to an LED light row and a series resistor, the LED light row can emit different brightnesses, thereby meeting the user's demand for different brightnesses, and the method of each LED light corresponding to a resistor can better drive the LED light to emit the corresponding brightness. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is the overall structure diagram of the intelligent timer of the utility model;

[0015] Figure 2 for Figure 1 The overall structure diagram of the middle lamp holder and the clamping plate;

[0016] Figure 3 This is the circuit diagram of the timing circuit. DETAILED DESCRIPTION

[0017] The present invention will be further described below with reference to the embodiments shown in the accompanying drawings.

[0018] Reference Figures 1 to 3 As shown, an intelligent timer of the present embodiment comprises a housing 1 and a timing circuit arranged in the housing 1, wherein the timing circuit comprises a timing chip, an operating circuit, a driving circuit, a power supply circuit and an indicating circuit, wherein the timing chip, the operating circuit, the driving circuit, the power supply circuit and the indicating circuit are connected to each other, and characterized in that: the indicating circuit comprises an LED lamp row, wherein a plurality of LED lamps are arranged in the LED lamp row, and the brightness of each LED lamp is different from each other, and each of the LED lamps is connected to the pin of the timing chip after being connected in series with a resistor in a one-to-one correspondence, wherein the resistance values ​​of each resistor connected in series are different from each other, and in the process of using the present embodiment, the external mains power supply can be converted to power the timing chip through the power supply circuit, and then through the action of the operating circuit, the user can realize the on and off of the timing of the timing chip, and through the setting of the driving circuit and the indicating circuit, the mosquito coil liquid heating operation and the real-time indication effect can be realized, and by forming an LED lamp row with a plurality of LED lamps of different brightness, and then synchronously setting a plurality of resistors, the indicating circuit can emit lights of different brightness, thereby satisfying the user's indication requirements for different brightness, and at the same time ensuring that the LED lamp is in normal working state.

[0019] As an improved specific implementation, the power supply circuit includes:

[0020] A voltage-dropping resistor group, the voltage-dropping resistor group includes a resistor R1, a resistor R2 and a resistor R4, one end of the resistor R1 and the resistor R4 are connected to an external live wire and a neutral wire respectively, one end of the resistor R2 is connected to the resistor R1, and the other end is connected to a resistor R3 and then connected to a timing chip;

[0021] A half-bridge rectifier, the half-bridge rectifier comprising a diode D1 and a voltage regulator D2, wherein the anode of the diode D1 is connected to the resistor R2, the cathode is connected to the cathode of the voltage regulator D2, and the anode of the voltage regulator D2 is connected to the resistor R4;

[0022] A filter circuit includes a capacitor C1 and a resistor R8. After the capacitor C1 and the resistor R8 are connected in parallel, one end is connected to the connection node between the cathode of the diode D1 and the cathode of the voltage regulator D2, and the other end is grounded. Through the arrangement of the above structure, the conversion of the AC power supply can be simply and effectively achieved through the step-down rectification method. The filter circuit is composed of the capacitor C1 and the resistor R8. Compared with the single capacitor filtering method used in the prior art, the filtering effect is better, so that the output power is more stable and reliable.

[0023] As an improved specific embodiment, the shell 1 includes an upper cover 11 and a lower cover 12, the upper cover 11 is covered on the lower cover 12, the upper side of the upper cover 11 is provided with an air vent for gas to pass through, and the lower side of the lower cover 12 is provided with a mounting hole for mounting a mosquito coil bottle, and the mounting hole is arranged opposite to the air vent. Through the arrangement of the above structure, a structure for mounting an external mosquito coil bottle can be simply and effectively formed.

[0024] As a specific implementation of the improvement, a silicone button 13 is fixed to the side of the lower cover 12, and the operating circuit includes an operating button. When the timing circuit is installed in the lower cover 12, the operating part of the operating button is arranged in the silicone button 13. By adopting the silicone button, the device can withstand falling. Compared with most handles on the market now that use hard materials, when consumers accidentally drop the device during use or the switch position of the device is hit by external force, the switch of the ordinary hard material handle will damage the inside, causing the product switch to fail and cannot be used. We use silicone handle buttons, which can effectively absorb impact force and eliminate risks.

[0025] As a specific implementation of the improvement, the LED lamp row includes a lamp holder 2 and a snap-in plate 3, the LED lamp patch is arranged in the lamp holder 2, the snap-in plate 3 is fixedly mounted on the lower side of the lamp holder 2, one side of the lamp holder 2 is transparent, and when the lamp holder 2 is fixedly mounted on the lower cover 12, this side penetrates the lower cover 12 to the outside, and a card 4 is fixed on the snap-in plate 3, and the card 4 hooks the side wall of the lower cover 12. Through the arrangement of the above structure, the lamp holder 2 can be simply and effectively fixed to the lower cover 12 through the card 4.

[0026] As a specific implementation of the improvement, the card 4 is an arc-shaped sheet structure, one end of which is fixedly mounted on the snap-on plate 3, and the other end is upwardly tilted to form a snap-on end that abuts against the side wall of the lower cover 12. By setting the card 4 as an arc-shaped sheet, the elasticity of the arc-shaped structure can be utilized to achieve the elasticity of the card 4. On the one hand, the structure is simple and easy to manufacture, and on the other hand, the structural strength of the card 4 can also be guaranteed.

[0027] In summary, the smart timer of this embodiment uses a plurality of LED lights with different brightnesses to form an LED light row to provide indication functions with different brightnesses, which can stably and reliably meet the user's needs for indication functions with different brightnesses.

[0028] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. An intelligent timer, comprising a housing (1) and a timing circuit arranged in the housing (1), wherein the timing circuit comprises a timing chip, an operating circuit, a driving circuit, a power circuit and an indication circuit, wherein the timing chip, the operating circuit, the driving circuit, the power circuit and the indication circuit are interconnected, and characterized in that: The indicating circuit comprises an LED lamp row, wherein the LED lamp row has a plurality of LED lamps, each of which has a different brightness. Each of the LED lamps is connected in series with a resistor one by one and then connected to the pin of the timing chip, wherein the resistance values ​​of the series resistors are different from each other.

2. The intelligent timer according to claim 1, characterized in that: The power supply circuit comprises: A voltage-dropping resistor group, the voltage-dropping resistor group includes a resistor R1, a resistor R2 and a resistor R4, one end of the resistor R1 and the resistor R4 are connected to an external live wire and a neutral wire respectively, one end of the resistor R2 is connected to the resistor R1, and the other end is connected to a resistor R3 and then connected to a timing chip; A half-bridge rectifier, the half-bridge rectifier comprising a diode D1 and a voltage regulator D2, wherein the anode of the diode D1 is connected to the resistor R2, the cathode is connected to the cathode of the voltage regulator D2, and the anode of the voltage regulator D2 is connected to the resistor R4; The filter circuit includes a capacitor C1 and a resistor R8. After the capacitor C1 and the resistor R8 are connected in parallel, one end of the capacitor C1 and the resistor R8 is connected to the connection node between the cathode of the diode D1 and the cathode of the voltage regulator tube D2, and the other end is grounded.

3. The intelligent timer according to claim 2, characterized in that: The housing (1) comprises an upper cover (11) and a lower cover (12), wherein the upper cover (11) is placed on the lower cover (12), an air hole for gas to pass through is provided on the upper side of the upper cover (11), and an installation hole for installing a mosquito coil bottle is provided on the lower side of the lower cover (12), wherein the installation hole is arranged opposite to the air hole.

4. The intelligent timer according to claim 3, characterized in that: A silicone key (13) is fixed to the side of the lower cover (12), and the operating circuit includes an operating key. When the timing circuit is installed in the lower cover (12), the operating part of the operating key is arranged in the silicone key (13).

5. The intelligent timer according to claim 4, characterized in that: The LED lamp row comprises a lamp holder (2) and a snap-in plate (3), wherein the LED lamp patch is arranged in the lamp holder (2), and the snap-in plate (3) is fixedly mounted on the lower side of the lamp holder (2). One side of the lamp holder (2) is transparent, and when the lamp holder (2) is fixedly mounted on the lower cover (12), the side penetrates the lower cover (12) to the outside, and a card (4) is fixed on the snap-in plate (3), and the card (4) hooks the side wall of the lower cover (12).

6. The intelligent timer according to claim 5, characterized in that: The card (4) is an arc-shaped sheet structure, one end of which is fixedly mounted on the clamping plate (3), and the other end of which is tilted upward to form a clamping end that abuts against the side wall of the lower cover (12).

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