CN218162921U - Micro-power consumption microwave inductor control circuit and micro-power consumption microwave inductor - Google Patents
Micro-power consumption microwave inductor control circuit and micro-power consumption microwave inductor Download PDFInfo
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- CN218162921U CN218162921U CN202221790635.2U CN202221790635U CN218162921U CN 218162921 U CN218162921 U CN 218162921U CN 202221790635 U CN202221790635 U CN 202221790635U CN 218162921 U CN218162921 U CN 218162921U
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Abstract
The utility model belongs to the technical field of microwave inductors, in particular to a micro-power microwave inductor control circuit and a micro-power microwave inductor, which comprises a power supply circuit, a Doppler microwave module, a signal amplification filter circuit and a main control circuit; the signal amplification filtering circuit is connected with the Doppler microwave circuit; the master control circuit is connected with both the Doppler microwave module and the signal amplification and filtering circuit; and the pulse driving circuit is used for sending a pulse switching signal to the signal amplification and filtering circuit when the main control circuit sends a pulse signal to the pulse driving circuit so as to switch on/off a connecting channel from the Doppler microwave module to the signal amplification and filtering circuit. The utility model discloses only Doppler microwave module dormancy reduces the scheme of consumption among the prior art, based on the utility model provides a lower consumption can be realized to the hardware circuit, and then satisfies user's low-power consumption user demand.
Description
Technical Field
The utility model belongs to the technical field of the microwave inductor, especially, relate to a little consumption microwave inductor control circuit and little consumption microwave inductor.
Background
A microwave sensor, also called a microwave radar, is an instrument manufactured by using the doppler principle of electromagnetic waves. The method utilizes the reflection characteristic of the wave to know whether a moving object approaches or leaves. When a wave with a certain frequency hits an obstacle, a part of the wave is reflected back, the wavelength of the reflected wave is different due to the distance between the obstacle, and the change of the wavelength also means the change of the frequency.
The microwave sensor is widely applied due to high precision, but the sensor is inconvenient to use due to overhigh power consumption in the using process, and a low-power-consumption type sensor appears on the market, for example, the utility model with the application number of 201922205092.8 discloses a low-power-consumption microwave sensor and a control circuit thereof, which comprises a microwave module, a control module and a voltage stabilizing module, wherein the control module outputs and controls the microwave module to intermittently transmit signals through intermittent signals, so that the intermittent operation of the microwave sensor is realized, but the problem still exists, and an amplified analog signal of the microwave module during operation has continuity on a hardware circuit structure, so that a first control chip can always receive the signals sent by the microwave module, and further needs to always acquire and analyze the signals, so that the microwave sensor is always in a working state, and further the problem of high power consumption due to the limitation of the circuit structure is still caused, and the low-power consumption effect is influenced.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a little consumption microwave inductor control circuit and little consumption microwave inductor aims at solving among the prior art and realizes among the circuit structure of microwave inductor low-power consumption and then leads to the singlechip to work all the time and then still produce the technical problem that the consumption is high because of there being the limitation.
In order to achieve the above object, an embodiment of the present invention provides a micro-power microwave inductor control circuit, which includes a power supply circuit, and further includes a doppler microwave module, a signal amplification filter circuit and a main control circuit, which are all connected to the power supply circuit; the Doppler microwave module is connected with the power supply circuit; the signal amplification filtering circuit is connected with the Doppler microwave circuit; the master control circuit is connected with both the Doppler microwave module and the signal amplification and filtering circuit; further comprising:
the pulse driving circuit is connected with the main control circuit and the Doppler microwave module; the pulse driving circuit is further connected with the signal amplification and filtering circuit, so that when the main control circuit sends a pulse signal to the pulse driving circuit, the pulse driving circuit sends a pulse switch signal to the signal amplification and filtering circuit, and a connecting channel from the Doppler microwave module to the signal amplification and filtering circuit is switched on/off.
Optionally, the main control circuit includes a main control chip, an eighth pin of the main control chip is connected to the power supply circuit, and the main control chip is further connected to both the signal amplification and filtering circuit and the pulse driving circuit.
Optionally, the pulse driving circuit includes a first driving transistor and a first driving MOS transistor; the base electrode of the first driving triode is connected with the second pin of the main control chip, the emitting electrode of the first driving triode is connected with the power supply circuit, and the collecting electrode of the first driving triode is connected with the Doppler microwave module; the grid electrode of the first driving MOS tube is connected with a first pin of the main control chip, the drain electrode of the first driving MOS tube is connected with the Doppler microwave module, and the source electrode of the first driving MOS tube is connected with the signal amplification filter circuit.
Optionally, the signal amplification filtering circuit comprises an operational amplifier; the positive input end of the operational amplifier is connected with a sixth resistor and a fifth resistor and then is connected with the power supply circuit, and the positive input end of the operational amplifier is also connected with an eleventh capacitor and then is connected with the source electrode of the first driving MOS tube; the negative input end of the operational amplifier is connected with an eighth resistor and a fourteenth capacitor and then is grounded; and the output end of the operational amplifier is connected with the seventeenth pin of the main control chip.
Optionally, the signal amplification and filtering circuit further includes a fifteenth capacitor and a ninth resistor, where two ends of the fifteenth capacitor are respectively connected to the negative input end and the output end of the operational amplifier; and two ends of the ninth resistor are respectively connected with the negative input end and the output end of the operational amplifier.
Optionally, the signal amplification and filtering circuit further includes a tenth capacitor, one end of the tenth capacitor is grounded, and the other end of the tenth capacitor is connected between the source of the first driving MOS transistor and the eleventh capacitor.
Optionally, the doppler microwave module includes a microwave connection port, a first pin of the microwave connection port is connected to a collector of the first driving transistor, and a second pin of the microwave connection port is connected to a drain of the first driving MOS transistor.
Optionally, the power supply circuit further comprises an output circuit, and the output circuit is connected with the power supply circuit and the main control chip.
Optionally, the output circuit includes a wireless communication chip, a sixth pin of the wireless communication chip is connected to a ninth pin of the main control chip, and a third pin of the wireless communication chip is connected to the power supply circuit.
The embodiment of the utility model provides an above-mentioned one or more technical scheme in the little consumption microwave inductor control circuit have one of following technological effect at least:
the utility model discloses a master control circuit with set up between the doppler microwave module pulse drive circuit, and make pulse drive circuit still with signal amplification filter circuit connects, makes like this master control circuit sends a pulse signal extremely during pulse drive circuit, pulse drive circuit sends a pulse switch signal extremely signal amplification filter circuit, in order to switch on/cut off doppler microwave module extremely signal amplification filter circuit's interface channel, and then based on pulse drive circuit's setting has realized that can in time cut off or switch on doppler microwave module extremely signal amplification filter circuit's interface channel, when cutting off, can make master control circuit has handled the warp can get into the dormancy behind the original analog signal that doppler microwave module sent, than the scheme that only doppler microwave module dormancy reduces the consumption among the prior art, based on the hardware circuit in the utility model can realize lower consumption, and then satisfies user's low-power consumption user demand.
In order to achieve the above object, an embodiment of the present invention provides a micro-power microwave inductor, where the microwave inductor includes the above-mentioned micro-power microwave inductor control circuit.
The embodiment of the utility model provides an above-mentioned one or more technical scheme in the little consumption microwave inductor have one of following technological effect at least:
because of micropower microwave inductor has included foretell micropower microwave inductor control circuit, the event micropower microwave inductor also can make master control circuit has handled the process original analog signal that doppler microwave module sent can get into the dormancy, reduces the scheme of consumption than only doppler microwave module dormancy among the prior art, based on the hardware circuit can realize lower consumption, the event also has the advantage that can satisfy user's low-power consumption user demand.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following descriptions are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive labor.
Fig. 1 is a schematic circuit diagram of a control circuit of a micro-power microwave inductor according to an embodiment of the present invention.
Wherein, in the figures, the respective reference numerals:
100. a power supply circuit; 200. a Doppler microwave module; 300. a signal amplifying and filtering circuit; 400. a master control circuit; 500. a pulse drive circuit; 600. and an output circuit.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below by referring to the drawings are exemplary and intended to explain the embodiments of the present invention and are not to be construed as limiting the present invention.
In the description of the embodiments of the present invention, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings, which is only for convenience in describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element so indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present invention, "a plurality" means two or more unless specifically limited otherwise.
In the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly, e.g., as fixed or detachable connections or as an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. The specific meaning of the above terms in the embodiments of the present invention can be understood by those skilled in the art according to specific situations.
In an embodiment of the present invention, as shown in fig. 1, a micro-power microwave inductor control circuit is provided, which includes a power supply circuit 100, a doppler microwave module 200, a signal amplification filter circuit 300 and a main control circuit 400, wherein the doppler microwave module 200, the signal amplification filter circuit 300 and the main control circuit 400 are all connected to the power supply circuit 100. The doppler microwave module 200 is connected to the power supply circuit 100; the signal amplification filter circuit 300 is connected with the Doppler microwave circuit; the master control circuit 400 is connected to both the doppler microwave module 200 and the signal amplification filter circuit 300.
The micro-power microwave inductor control circuit further comprises a pulse driving circuit 500, and the pulse driving circuit 500 is connected with both the main control circuit 400 and the doppler microwave module 200; the pulse driving circuit 500 is further connected to the signal amplification and filtering circuit 300, so that when the main control circuit 400 sends a pulse signal to the pulse driving circuit 500, the pulse driving circuit 500 sends a pulse switch signal to the signal amplification and filtering circuit 300, so as to disconnect a connection channel from the doppler microwave module 200 to the signal amplification and filtering circuit 300.
The utility model discloses a master control circuit 400 with set up between the doppler microwave module 200 pulse drive circuit 500, and make pulse drive circuit 500 still with signal amplification filter circuit 300 is connected, makes like this master control circuit 400 send a pulse signal extremely during pulse drive circuit 500, pulse drive circuit 500 sends a pulse switching signal extremely signal amplification filter circuit 300, in order to switch on doppler microwave module 200 extremely signal amplification filter circuit 300's connect channel, and then based on pulse drive circuit 500 set up realize can even cut off or switch on doppler microwave module 200 extremely signal amplification filter circuit 300's connect channel, and then can make when the doppler microwave module is out of work, the accumulated charge of amplification filter circuit input tenth electric capacity can keep the next working pulse of doppler microwave module.
In another embodiment of the present invention, as shown in fig. 1, the main control circuit 400 includes a main control chip U1, the eighth pin of the main control chip U1 is connected to the power supply circuit 100, the main control chip U1 is further connected to the signal amplification and filtering circuit 300 and the pulse driving circuit 500. The main control chip U1 is configured to send a pulse signal to the pulse driving circuit 500, so as to control the pulse driving circuit 500 to send a pulse switching signal to the signal amplification and filtering circuit 300, and further disconnect a connection channel from the doppler microwave module 200 to the signal amplification and filtering circuit 300 based on the pulse switching signal, so as to reduce power consumption.
Based on the setting of the pulse switch signal, the transmission control of the original analog signal sent by the doppler microwave module 200 is realized, and the problem of high power consumption caused by the fact that the main control chip U1 works all the time due to the fact that the original analog signal is transmitted to the rear all the time is prevented.
The main control chip U1 is further configured to send a pulse power supply signal to the doppler microwave module 200, so as to supply power to the doppler microwave module 200 based on the pulse power supply signal, thereby enabling the doppler microwave module 200 to operate. Specifically, when the main control chip U1 sends a pulse power supply signal, a pulse signal is sent to the pulse driving circuit 500, so that the doppler microwave module 200 is connected to the signal amplification and filtering circuit 300 when the doppler microwave module 200 is operating.
Then, after the pulse power supply signal is sent and a first preset specific time is waited, for example, after 10us is waited, the main control chip U1 cuts off power supply to the doppler microwave module 200, and at this time, the doppler microwave module 200 does not work and does not consume power any more.
Then, the original analog signal is amplified by the signal amplifying and filtering circuit 300 to generate an amplified analog signal, the amplified analog signal is sent to the main control chip U1, the main control chip U1 performs analog-to-digital conversion according to an internal AD converter thereof and generates a digital output signal, and then whether a dynamic detection object exists or not can be judged according to the digital output signal, and then other components, such as a camera device connected with the main control chip U1 by wire or wireless, can be further controlled.
In this embodiment, the model of the main control chip U1 is preferably STM8L051, or other low-power consumption control chips may be selected.
In another embodiment of the present invention, as shown in fig. 1, the pulse driving circuit 500 includes a first driving transistor Q1 and a first driving MOS transistor Q2; a base electrode of the first driving triode Q1 is connected with a second pin of the main control chip U1, an emitting electrode of the first driving triode Q1 is connected with the power supply circuit 100, and a collecting electrode of the first driving triode Q1 is connected with the doppler microwave module 200; the grid electrode of the first driving MOS tube Q2 is connected with the first pin of the main control chip U1, the drain electrode of the first driving MOS tube Q2 is connected with the Doppler microwave module 200, and the source electrode of the first driving MOS tube Q2 is connected with the signal amplification filter circuit 300.
When main control chip U1 sends the pulse electrical signal extremely first drive triode Q1 with first drive MOS pipe Q2, so that first drive triode Q1 with first drive MOS pipe Q2 switches on, first drive triode Q1 switches on the back, the warp first drive triode Q1 sends the pulse power supply signal extremely Doppler microwave module 200, first drive MOS pipe Q2 switches on the back, the warp first drive MOS pipe Q2 sends the pulse switching signal extremely signal amplification filter circuit 300.
In another embodiment of the present invention, as shown in fig. 1, the signal amplifying and filtering circuit 300 includes an operational amplifier U3; the positive input end of the operational amplifier U3 is connected to the power supply circuit 100 after being connected to a sixth resistor R6 and a fifth resistor R5, and the positive input end of the operational amplifier U3 is also connected to an eleventh capacitor C11 and then is connected to the source of the first driving MOS transistor Q2; the negative electrode input end of the operational amplifier U3 is connected with an eighth resistor R8 and a fourteenth capacitor C14 and then grounded; and the output end of the operational amplifier U3 is connected with the seventeenth pin of the main control chip U1.
And after the original analog signal is amplified by the operational amplifier U3, an amplified analog signal is generated and output to the main control chip U1.
In this embodiment, the model of the operational amplifier U3 is preferably SGM8045.
In another embodiment of the present invention, the signal amplifying and filtering circuit 300 further includes a fifteenth capacitor C15 and a ninth resistor R9, two ends of the fifteenth capacitor C15 are respectively connected to the negative input end and the output end of the operational amplifier U3; and two ends of the ninth resistor R9 are respectively connected with the negative input end and the output end of the operational amplifier U3.
In another embodiment of the present invention, the signal amplifying and filtering circuit 300 further includes a tenth capacitor C10, one end of the tenth capacitor C10 is grounded, and the other end of the tenth capacitor C10 is connected between the source of the first driving MOS transistor Q2 and the eleventh capacitor C11.
In another embodiment of the present invention, as shown in fig. 1, the doppler microwave module 200 includes a microwave connection port J1, the first pin of the microwave connection port J1 is connected to the collector of the first driving transistor Q1, and the second pin of the microwave connection port J1 is connected to the drain of the first driving MOS transistor Q2. In this embodiment, the microwave connection port J1 is used to mount a microwave inductor, thereby implementing a detection function.
In another embodiment of the present invention, as shown in fig. 1, the control circuit of micro-power microwave inductor further includes an output circuit 600, and the output circuit 600 is connected to the power supply circuit 100 and the main control chip U1.
In another embodiment of the present invention, as shown in fig. 1, the output circuit 600 includes a wireless communication chip U2, a sixth pin of the wireless communication chip U2 is connected to a ninth pin of the main control chip U1, and a third pin of the wireless communication chip U2 is connected to the power supply circuit 100.
Specifically, through wireless communication chip U2 is wireless communication module, and cooperates simultaneously supply circuit 100 adopts the battery to supply power, and then when regarding wireless communication module as output module, has realized exempting from the wiring mounting means, has also adapted to more use scenes when greatly having reduced the installation degree of difficulty.
In this embodiment, the output circuit 600 employs a wireless communication chip U2, and the specific model thereof is SYN115, so as to meet the requirement of low power consumption. Of course, the wireless communication chip U2 may also be selected from other types, which is not limited in this application.
In another embodiment of the present invention, as shown in fig. 1, the power supply circuit 100 includes a power supply battery BAT and a power supply connection terminal 3V, and the 3V voltage provided by the power supply battery BAT is outputted by the power supply connection terminal 3V. And the power supply connecting end 3V is connected with an eighth pin of the main control chip U1, an emitting electrode of the first driving triode Q1, the fifth resistor R5 and a third pin of the wireless communication chip U2 and supplies power.
In another embodiment of the present invention, as shown in fig. 1, the present invention further provides a micro-power microwave inductor, wherein the microwave inductor includes the above-mentioned micro-power microwave inductor control circuit.
Because of little consumption microwave inductor has included foretell little consumption microwave inductor control circuit, the event little consumption microwave inductor also can make master control circuit 400 has been handled the process original analog signal that doppler microwave module 200 sent can get into the dormancy, reduces the scheme of consumption than only doppler microwave module 200 dormancy among the prior art, based on the utility model provides a lower consumption can be realized to the hardware circuit, the event also has the advantage that can satisfy user's low-power consumption user demand.
It should be noted that, the present application aims to protect the hardware circuit structure, and regarding the control method and process, a person skilled in the art should perform programming processing by itself according to the chip model provided by the present application or by selecting other appropriate models by itself by using a mature and formed technology in the prior art, so as to implement corresponding control, which is not specifically set forth herein.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the present invention, and any modifications, equivalents, improvements, etc. made within the spirit and principles of the present invention should be included within the scope of the present invention.
Claims (10)
1. A micro-power microwave inductor control circuit comprises a power supply circuit, and is characterized by also comprising a Doppler microwave module, a signal amplification filter circuit and a main control circuit which are connected with the power supply circuit; the Doppler microwave module is connected with the power supply circuit; the signal amplification filtering circuit is connected with the Doppler microwave circuit; the master control circuit is connected with both the Doppler microwave module and the signal amplification and filtering circuit; further comprising:
the pulse driving circuit is connected with the main control circuit and the Doppler microwave module; the pulse driving circuit is further connected with the signal amplification and filtering circuit, so that when the main control circuit sends a pulse signal to the pulse driving circuit, the pulse driving circuit sends a pulse switch signal to the signal amplification and filtering circuit, and a connecting channel from the Doppler microwave module to the signal amplification and filtering circuit is switched on/off.
2. The microwave inductor control circuit with micro power consumption according to claim 1, wherein the main control circuit comprises a main control chip, an eighth pin of the main control chip is connected to the power supply circuit, and the main control chip is further connected to both the signal amplification filtering circuit and the pulse driving circuit.
3. The microwave inductor control circuit with micro power consumption according to claim 2, wherein the pulse driving circuit comprises a first driving transistor and a first driving MOS transistor; the base electrode of the first driving triode is connected with the second pin of the main control chip, the emitting electrode of the first driving triode is connected with the power supply circuit, and the collecting electrode of the first driving triode is connected with the Doppler microwave module; the grid electrode of the first driving MOS tube is connected with a first pin of the main control chip, the drain electrode of the first driving MOS tube is connected with the Doppler microwave module, and the source electrode of the first driving MOS tube is connected with the signal amplification filter circuit.
4. The microwave inductor control circuit with micro power consumption according to claim 3, wherein the signal amplifying and filtering circuit comprises an operational amplifier; the positive input end of the operational amplifier is connected with a sixth resistor and a fifth resistor and then is connected with the power supply circuit, and the positive input end of the operational amplifier is also connected with an eleventh capacitor and then is connected with the source electrode of the first drive MOS tube; the negative input end of the operational amplifier is connected with an eighth resistor and a fourteenth capacitor and then is grounded; and the output end of the operational amplifier is connected with the seventeenth pin of the main control chip.
5. The microwave inductor control circuit with micro power consumption according to claim 4, wherein the signal amplifying and filtering circuit further comprises a fifteenth capacitor and a ninth resistor, and two ends of the fifteenth capacitor are respectively connected to the negative input end and the output end of the operational amplifier; and two ends of the ninth resistor are respectively connected with the negative input end and the output end of the operational amplifier.
6. The microwave inductor control circuit with micro power consumption according to claim 4, wherein the signal amplification filter circuit further comprises a tenth capacitor, one end of the tenth capacitor is grounded, and the other end of the tenth capacitor is connected between the source of the first driving MOS transistor and the eleventh capacitor.
7. The microwave inductor control circuit with micro power consumption according to claim 3, wherein the Doppler microwave module comprises a microwave connection port, a first pin of the microwave connection port is connected with a collector of the first driving triode, and a second pin of the microwave connection port is connected with a drain of the first driving MOS transistor.
8. The control circuit of the micro-power microwave inductor according to any one of claims 2-7, further comprising an output circuit, wherein the output circuit is connected with both the power supply circuit and the main control chip.
9. The microwave inductor control circuit with micro power consumption according to claim 8, wherein the output circuit comprises a wireless communication chip, a sixth pin of the wireless communication chip is connected with a ninth pin of the main control chip, and a third pin of the wireless communication chip is connected with the power supply circuit.
10. A microwave inductor with micro power consumption, characterized in that the microwave inductor comprises the control circuit of the microwave inductor with micro power consumption as claimed in any one of claims 1 to 9.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221790635.2U CN218162921U (en) | 2022-07-11 | 2022-07-11 | Micro-power consumption microwave inductor control circuit and micro-power consumption microwave inductor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221790635.2U CN218162921U (en) | 2022-07-11 | 2022-07-11 | Micro-power consumption microwave inductor control circuit and micro-power consumption microwave inductor |
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| Publication Number | Publication Date |
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| CN218162921U true CN218162921U (en) | 2022-12-27 |
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| CN202221790635.2U Active CN218162921U (en) | 2022-07-11 | 2022-07-11 | Micro-power consumption microwave inductor control circuit and micro-power consumption microwave inductor |
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