CN211293641U - Energy-saving electric wave clock - Google Patents
Energy-saving electric wave clock Download PDFInfo
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- CN211293641U CN211293641U CN202020153608.9U CN202020153608U CN211293641U CN 211293641 U CN211293641 U CN 211293641U CN 202020153608 U CN202020153608 U CN 202020153608U CN 211293641 U CN211293641 U CN 211293641U
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Abstract
The utility model provides an energy-conserving electric wave clock, include: the device comprises a signal receiving module, a detection module, a control electronic board, a display module and a power supply module; the signal receiving module comprises an antenna resonance circuit, an amplification filter circuit, a low-power consumption detection circuit and an AGC automatic gain control loop, and is used for receiving a time service electric wave sent by a time service center or a time service electric wave generating source; the detection module comprises a light ray detection unit and a temperature and humidity detection unit; the control electronic board includes the MCU controller, the display module includes LCD liquid crystal display, LCD liquid crystal display with the MCU controller electricity is connected, LCD liquid crystal display is arranged in showing the humiture in time service time and the environment, the utility model discloses use low-power consumption control chip and adopt the photic to awaken up and reduced the circuit consumption, circuit structure is simple, and the reliability is high.
Description
Technical Field
The utility model relates to a clock and watch equipment technical field especially involves an energy-conserving electric wave clock.
Background
The radio wave clock is developed in several years, the long wave time service technology is mature day by day, the time service process, namely BPC time code signal is transmitted out in long wave through carrier code modulation, and at the receiving end, the demodulation and decoding are carried out by utilizing an antenna and a frequency selection amplifying circuit, so that accurate time signals are obtained and displayed. The existing radio wave clock has poor anti-interference capability and low applicability, and the problem of high power consumption of a circuit is also existed due to the complex circuit.
In summary, it is a problem to be solved by those skilled in the art to provide an energy-saving radio-controlled clock with simple circuit structure, high reliability and low power consumption.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned problems and needs, the present invention provides an energy-saving wave clock, which can solve the above-mentioned technical problems due to the following technical solutions.
In order to achieve the above object, the utility model provides a following technical scheme: an energy-saving wave clock comprising: the device comprises a signal receiving module, a detection module, a control electronic board, a display module and a power supply module;
the signal receiving module comprises an antenna resonance circuit, an amplifying and filtering circuit, a low-power consumption detection circuit and an AGC automatic gain control loop, the signal receiving module is used for receiving time service electric waves sent by a time service center or a time service electric wave generating source, the antenna resonance circuit, the amplifying and filtering circuit, the low-power consumption detection circuit and the AGC automatic gain control loop are electrically connected in sequence, and the feedback end of the AGC automatic gain control loop is electrically connected with the amplifying and filtering circuit;
the detection module comprises a light ray detection unit and a temperature and humidity detection unit, the light ray detection unit and the temperature and humidity detection unit are both electrically connected with the control electronic board, the light ray detection unit is used for detecting the light ray intensity in the environment, and the temperature and humidity detection unit is used for detecting the temperature and the humidity in the environment;
the control electronic board comprises an MCU controller, the display module comprises an LCD liquid crystal display screen, the LCD liquid crystal display screen is electrically connected with the MCU controller, and the LCD liquid crystal display screen is used for displaying time service time and temperature and humidity in the environment.
Further, the antenna resonant circuit comprises a magnetic rod antenna and a frequency modulation capacitor C1, wherein the frequency modulation capacitor C1 is connected in parallel with two ends of the magnetic rod antenna coil L1.
Furthermore, the amplifying and filtering circuit comprises a differential input amplifying circuit, a filtering and frequency selecting circuit and a narrow-band filtering circuit, the differential input amplifying circuit comprises NPN type triodes Q1-Q3, a resistor R1, a resistor R2 and a filtering capacitor C2, the filtering capacitor C2 is connected between one end of the coil L1 and the ground, the triode Q1 and the triode Q2 are connected by adopting a common emitter, the filtering and frequency selecting circuit comprises a capacitor C3, an NPN type triode Q4, an inductor L2 and a capacitor C4, and the narrow-band filtering circuit comprises a resistor R4, a resistor R5, an NPN type triode Q9, a capacitor C5, a capacitor C6 and a crystal oscillator X1.
Furthermore, the low-power-consumption detection circuit comprises a double-tube detection circuit consisting of a triode and a diode, the double-tube detection circuit can improve detection efficiency and detection stability, and the output end of the low-power-consumption detection circuit is connected with an external interrupt interface of the MCU controller to send the received electric signals to the MCU controller for coding.
Furthermore, the AGC automatic gain control loop comprises a filter capacitor, two resistors, a protection resistor and an NPN type triode, wherein one end of the filter capacitor is grounded, the other end of the filter capacitor is connected with one end of one resistor in parallel and then connected with the feedback input end of the amplification filter circuit, the other end of the resistor is connected with the collector of the triode and one end of the other resistor in parallel, the other end of the other resistor is connected with a power supply, the emitter of the triode is grounded, and the collector of the triode is connected with the detection circuit through the protection resistor.
Further, the light detection unit comprises a photosensitive sensor, the temperature and humidity detection unit comprises a temperature and humidity sensor, and the output ends of the photosensitive sensor and the temperature and humidity sensor are connected with the A/D conversion port of the MCU controller.
Further, still include the audio module, the audio module includes speaker and speaker drive circuit, speaker drive circuit with the speaker electricity is connected.
Furthermore, the loudspeaker driving circuit comprises two protective resistors, a capacitor and an NPN type triode, wherein the base electrode of the triode is connected with the output port of the MCU through one protective resistor, the emitting electrode of the triode is grounded, the collector electrode of the triode is connected with one end of the other protective resistor, one end of the capacitor and one end of the loudspeaker in parallel, and the other end of the other protective resistor, the other end of the capacitor and the other end of the loudspeaker in parallel.
The beneficial effects of the utility model are that, this utility model use low-power consumption control chip and adopt the photic awakening mode can make the system be in the dormant state when not using, reduced the circuit consumption, and circuit structure is simple, and the reliability is high, and the double-barrelled detection mode in the system can improve detection efficiency greatly and improve the stability of detection.
The following description of the preferred embodiments for carrying out the present invention will be made in detail with reference to the accompanying drawings so that the features and advantages of the present invention can be easily understood.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments of the present invention will be briefly described below. The drawings are intended to depict only some embodiments of the invention, and not all embodiments of the invention are limited thereto.
Fig. 1 is a schematic view of the structure of the present invention.
Fig. 2 is the circuit interface schematic diagram of the middle antenna resonant circuit and the amplification filter circuit of the present invention.
Fig. 3 is a schematic diagram of a circuit interface of the low-power detection circuit of the present invention.
Detailed Description
In order to make the technical solution of the present invention, its purpose, technical solution and advantages become clearer, the drawings of the embodiments of the present invention will be combined hereinafter, and the technical solution of the embodiments of the present invention will be clearly and completely described. Like reference symbols in the various drawings indicate like elements. It should be noted that the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive work based on the described embodiments of the present invention, belong to the protection scope of the present invention.
As shown in fig. 1 to fig. 3, the utility model provides an energy-saving electric wave clock with simple structure, high applicability and low power consumption, which comprises: the device comprises a signal receiving module, a detection module, a control electronic board, a display module, a power supply module and an audio module; the control electronic board comprises an MCU controller, the MCU controller in the system adopts a low-power STM32 chip STM32L151CBT6, a plurality of low-power modes of the chip are very suitable for application of a low-power system, the display module comprises an LCD (liquid crystal display), an output port of the MCU controller is connected with an input port of the LCD, the LCD and the core processor adopt a parallel control communication mode, and the LCD is used for displaying time service time and temperature and humidity in the environment; the power supply module comprises a rechargeable lithium battery, and the rechargeable lithium battery is used for providing required voltage for the system; the audio module includes speaker and speaker drive circuit, speaker drive circuit with the speaker electricity is connected, speaker drive circuit includes two protective resistor, a electric capacity and an NPN type triode, the base of triode pass through a protective resistor with MCU's output port is connected, the projecting pole ground connection of triode, the collecting electrode of triode and another protective resistor's one end the electric capacity's one end with the one end of speaker connects in parallel, another protective resistor's the other end the electric capacity's the other end with the other end of speaker connects in parallel.
The signal receiving module comprises an antenna resonance circuit, an amplifying and filtering circuit, a low-power consumption detection circuit and an AGC automatic gain control loop, the signal receiving module is used for receiving time service electric waves sent by a time service center or a time service electric wave generating source, the antenna resonance circuit, the amplifying and filtering circuit, the low-power consumption detection circuit and the AGC automatic gain control loop are electrically connected in sequence, and a feedback end of the AGC automatic gain control loop is electrically connected with the amplifying and filtering circuit.
The detection module includes light detection unit and temperature and humidity detection unit, light detection unit with temperature and humidity detection unit all with the control electronic board electricity is connected, light detection unit is arranged in the light intensity of detection ring border, temperature and humidity detection unit is arranged in the humiture of detection ring border, wherein, light detection unit includes photosensitive sensor, temperature and humidity detection unit includes temperature and humidity sensor, photosensitive sensor with temperature and humidity sensor's output respectively with the AD conversion port PA0 and the PA7 of MCU controller link to each other.
As shown in fig. 2, the antenna resonant circuit includes a magnetic rod antenna and a frequency modulation capacitor C1, the frequency modulation capacitor C1 is connected in parallel to the two ends of the magnetic rod antenna coil L1; the amplifying and filtering circuit comprises a differential input amplifying circuit, a filtering frequency-selecting circuit and a narrow-band filtering circuit, wherein the differential input amplifying circuit comprises NPN type triodes Q1-Q3, a resistor R1, a resistor R2 and a filtering capacitor C2, the filtering capacitor C2 is connected between one end of a coil L1 and the ground, the triode Q1 and the triode Q2 are connected by adopting a common emitter, the filtering frequency-selecting circuit comprises a capacitor C3, an NPN type triode Q4, an inductor L2 and a capacitor C4, the narrow-band filtering circuit comprises a resistor R4, a resistor R5, an NPN type triode Q9, a capacitor C5, a capacitor C6 and a crystal oscillator X1, and input signals can be subjected to narrow-band filtering due to the characteristic of high quality factor of the crystal oscillator. The crystal oscillator has low impedance property for signals of corresponding frequencies, and has high impedance characteristic for other frequencies. Most of noise can be filtered by utilizing the good filtering characteristic of the crystal oscillator, and adjacent frequency interference can also be eliminated. As shown in fig. 3, the low power consumption detection circuit includes a dual-transistor detection circuit composed of a triode and a diode, the dual-transistor detection circuit can improve detection efficiency and detection stability, the output end of the low power consumption detection circuit is connected with an external interrupt interface of the MCU controller to send a received electrical signal to the MCU controller for encoding, the setting of the detection threshold voltage can be realized by adjusting a resistor R9, and an adjustable sliding resistor R9 can be designed in an actual system to facilitate the adjustment of the threshold voltage value at any time. In order to make the output signal high to facilitate decoding of the MCU controller and also make the high level cause external interruption of the MCU controller, the transistor Q8 is provided to control the collector resistor R12 as large as possible to reduce the power consumption of the circuit.
In this embodiment, the AGC loop includes a filter capacitor, two resistors, a protection resistor and an NPN type triode, filter capacitor one end ground connection, the filter capacitor other end with a resistor one end connect in parallel the back with amplify filter circuit's feedback input end and link to each other, a resistor other end with triode collecting electrode and another resistor one end connect in parallel, another resistor other end ground connection power, the projecting pole ground connection of triode, the collecting electrode of triode pass through protection resistor with detection circuit links to each other. The intensity of signal reception changes along with the direction arrangement of the antenna, so that the envelope of the signal has strong and weak changes. Therefore the utility model discloses an automatic gain control loop carries out signal strength control, and wherein the AGC input is the crest value after the detection, and differential input amplifier circuit's active load is made to AGC's output, provides the emitter current of common emitter, controls triode Q4's base simultaneously, and then control amplification, and when signal strength is strong, AGC exports just weak to the envelope that makes final output reaches the balance.
It should be noted that the embodiments of the present invention are only the preferred embodiments for implementing the present invention, and all the obvious modifications and changes belonging to the overall concept of the present invention should fall within the protection scope of the present invention.
Claims (8)
1. An energy-saving radio controlled clock, comprising: the device comprises a signal receiving module, a detection module, a control electronic board, a display module and a power supply module;
the signal receiving module comprises an antenna resonance circuit, an amplifying and filtering circuit, a low-power consumption detection circuit and an AGC automatic gain control loop, the signal receiving module is used for receiving time service electric waves sent by a time service center or a time service electric wave generating source, the antenna resonance circuit, the amplifying and filtering circuit, the low-power consumption detection circuit and the AGC automatic gain control loop are electrically connected in sequence, and the feedback end of the AGC automatic gain control loop is electrically connected with the amplifying and filtering circuit;
the detection module comprises a light ray detection unit and a temperature and humidity detection unit, the light ray detection unit and the temperature and humidity detection unit are both electrically connected with the control electronic board, the light ray detection unit is used for detecting the light ray intensity in the environment, and the temperature and humidity detection unit is used for detecting the temperature and the humidity in the environment;
the control electronic board comprises an MCU controller, the display module comprises an LCD liquid crystal display screen, the LCD liquid crystal display screen is electrically connected with the MCU controller, and the LCD liquid crystal display screen is used for displaying time service time and temperature and humidity in the environment.
2. The energy-saving wave clock according to claim 1, wherein the antenna resonance circuit comprises a bar antenna and a frequency modulation capacitor C1, and the frequency modulation capacitor C1 is connected in parallel to both ends of the bar antenna coil L1.
3. The energy-saving wave clock as claimed in claim 2, characterized in that the amplifying and filtering circuit comprises a differential input amplifying circuit, a filtering and frequency selecting circuit and a narrow band filtering circuit, the differential input amplifying circuit comprises NPN type triodes Q1-Q3, a resistor R1, a resistor R2 and a filtering capacitor C2, the filtering capacitor C2 is connected between one end of the coil L1 and ground, the triode Q1 and the triode Q2 are connected by common emitter, the filtering and frequency selecting circuit comprises a capacitor C3, an NPN type triode Q4, an inductor L2 and a capacitor C4, and the narrow band filtering circuit comprises a resistor R4, a resistor R5, an NPN type triode Q9, a capacitor C5, a capacitor C6 and a crystal oscillator X1.
4. The energy-saving wave clock as claimed in claim 3, wherein the low power consumption detector circuit comprises a dual-tube detector circuit consisting of a triode and a diode, the dual-tube detector circuit can improve the detection efficiency and the detection stability, and the output end of the low power consumption detector circuit is connected with the external interrupt interface of the MCU controller to send the received electric signal to the MCU controller for encoding.
5. The energy-saving wave clock according to claim 1, wherein the AGC loop comprises a filter capacitor, two resistors, a protection resistor and an NPN transistor, one end of the filter capacitor is grounded, the other end of the filter capacitor is connected in parallel with one end of one resistor and then connected to the feedback input terminal of the amplifying filter circuit, the other end of the one resistor is connected in parallel with the collector of the transistor and one end of the other resistor, the other end of the other resistor is connected to a power supply, the emitter of the transistor is grounded, and the collector of the transistor is connected to the detection circuit through the protection resistor.
6. The energy-saving electric wave clock as claimed in claim 1, wherein the light detection unit comprises a photosensitive sensor, the temperature and humidity detection unit comprises a temperature and humidity sensor, and output ends of the photosensitive sensor and the temperature and humidity sensor are connected with an A/D conversion port of the MCU controller.
7. The energy-saving wave clock according to claim 1, further comprising an audio module, the audio module comprising a speaker and a speaker driving circuit, the speaker driving circuit being electrically connected to the speaker.
8. The energy-saving wave clock according to claim 7, wherein the speaker driving circuit comprises two protection resistors, a capacitor and an NPN transistor, wherein the base of the transistor is connected to the output port of the MCU through a protection resistor, the emitter of the transistor is grounded, the collector of the transistor is connected in parallel to one end of another protection resistor, one end of the capacitor and one end of the speaker, and the other end of the another protection resistor, the other end of the capacitor and the other end of the speaker are connected in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020153608.9U CN211293641U (en) | 2020-02-06 | 2020-02-06 | Energy-saving electric wave clock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020153608.9U CN211293641U (en) | 2020-02-06 | 2020-02-06 | Energy-saving electric wave clock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211293641U true CN211293641U (en) | 2020-08-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020153608.9U Expired - Fee Related CN211293641U (en) | 2020-02-06 | 2020-02-06 | Energy-saving electric wave clock |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211293641U (en) |
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2020
- 2020-02-06 CN CN202020153608.9U patent/CN211293641U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200818 |
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| CF01 | Termination of patent right due to non-payment of annual fee |