CN210430994U - NB-IoT room temperature collector based on single live wire switch - Google Patents
NB-IoT room temperature collector based on single live wire switch Download PDFInfo
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- CN210430994U CN210430994U CN201921405559.7U CN201921405559U CN210430994U CN 210430994 U CN210430994 U CN 210430994U CN 201921405559 U CN201921405559 U CN 201921405559U CN 210430994 U CN210430994 U CN 210430994U
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Abstract
The utility model discloses a NB-IoT room temperature collector based on single live wire switch, include: the control module is in communication connection with the NB-IoT wireless module and the temperature detection circuit respectively, the XD-KC024 single-live-wire relay driving module extracts voltage from a live wire and outputs 8.5-14.5V voltage, the voltage reduction circuit converts the voltage value output by the XD-KC024 single-live-wire relay driving module into charging voltage, the XD-KC024 single-live-wire relay driving module and the voltage reduction circuit charge the storage battery, the storage battery is used as a power supply to supply power to the control module, the NB-IoT wireless module and the temperature detection circuit, and the problem that the existing single-live-wire switch needs frequent replacement of dry batteries is solved. The intelligent household clothes are mainly used for intelligent home and daily life of people.
Description
Technical Field
The utility model relates to a collector technical field, in particular to NB-IoT room temperature collector based on single live wire switch.
Background
The existing single live wire switch (only a single live wire enters/exits without a zero line) becomes a replacement finished product of the traditional mechanical switch, so that the intelligent control of the lighting equipment is realized. The existing room temperature collector is generally combined with a single live wire switch, and loads, such as an air conditioner, a fan and the like, are switched according to the room temperature. The conventional power supply mode of the room temperature collector generally supplies power through a dry battery, but the dry battery needs to be frequently replaced for supplying power, so that the user experience is poor.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a do not need the NB-IoT room temperature collector of frequent change dry battery.
The utility model provides a solution of its technical problem is: an NB-IoT room temperature collector based on a single firewire switch, comprising: the control module is in communication connection with the NB-IoT wireless module and the temperature detection circuit respectively, the XD-KC024 single live wire relay driving module is used for extracting voltage from a live wire and outputting 8.5-14.5V voltage, the voltage reduction circuit is used for converting a voltage value output by the XD-KC024 single live wire relay driving module into charging voltage, and the charging voltage acts on the storage battery.
Further, the model of the detection chip of the temperature detection circuit is TMP 102.
Furthermore, the room temperature acquisition device also comprises an LCD display module, and the LCD display module is connected with the control module.
Further, the model of the core chip of the control module is MKL16Z128VLH 4.
Further, the NB-IoT wireless module is an LSD-NB86-G module.
Further, the step-down circuit includes: the voltage value output by the XD-KC024 single live wire relay driving module is reduced to a floating voltage, and the constant voltage circuit is used for outputting the floating voltage to a charging voltage constantly.
Further, the one-stage voltage-reducing circuit includes: the voltage-reducing converter is of the model TPS62120, the voltage detector is of the model ME2808, the first resistor, the second resistor, the third resistor, the first capacitor, the second capacitor, the third capacitor, the first inductor and the floating voltage node, an IN end of the voltage-reducing converter is respectively connected with an anode of the third capacitor, one end of the first resistor, an output end of the XD-KC024 single live wire relay driving module and a VCC end of the voltage detector, an EN end of the voltage-reducing converter is respectively connected with the other end of the first resistor, one end of the first capacitor and a RESET end of the voltage detector, an SW end of the voltage-reducing converter is connected with one end of the first inductor, the other end of the first inductor is respectively connected with one end of the second capacitor, one end of the second resistor, a VOUT end of the voltage-reducing converter and the floating voltage node, the other end of the second resistor is respectively connected with an FB end of the voltage-reducing converter and one end of, the GND end of the voltage detector, the other end of the first capacitor, the GND end of the buck converter, the other end of the third resistor, the other end of the second capacitor and the cathode of the third capacitor are all connected to the ground.
Further, the constant voltage circuit includes: a constant voltage chip with the model number ME4067, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, a fourth capacitor, a fifth capacitor and a sixth capacitor, the VCC end of the constant voltage chip is respectively connected with one end of the fourth capacitor, one end of the fifth capacitor and the floating voltage node, the CE end of the constant voltage chip is connected with one end of the fourth resistor, the TEMP end of the constant voltage chip is connected with one end of the fifth resistor, the BAT end of the constant voltage chip is respectively connected with one end of the sixth capacitor and one end of the seventh resistor, the IRS end of the constant voltage chip is connected with one end of the sixth resistor, the other end of the fourth capacitor, the other end of the fifth capacitor, the other end of the fourth resistor, the other end of the fifth resistor, the GND end of the constant voltage chip, the other end of the sixth resistor and the other end of the sixth capacitor are all connected to the ground, and the other end of the seventh resistor outputs charging voltage.
Further, the first-stage voltage reduction circuit further comprises: and the cathode of the voltage stabilizing diode is connected with the anode of the third capacitor, and the anode of the voltage stabilizing diode is connected with the cathode of the third capacitor.
Further, the first-stage voltage reduction circuit further comprises: and the cathode of the Schottky diode is connected with the SW end of the buck converter, and the anode of the Schottky diode is connected to the ground.
The utility model has the advantages that: the circuit for charging the storage battery is formed by the XD-KC024 single-live-wire relay driving module and the voltage reduction circuit, and meanwhile, the storage battery is used as a power supply to supply power to the control module, the NB-IoT wireless module and the temperature detection circuit, so that the problem that the dry battery needs to be frequently replaced in the conventional single-live-wire switch is solved.
Drawings
In order to more clearly illustrate the technical solution in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is clear that the described figures represent only some embodiments of the invention, not all embodiments, and that a person skilled in the art can also derive other designs and figures from these figures without inventive effort.
FIG. 1 is a block diagram of a charging circuit;
FIG. 2 is a schematic circuit connection diagram of the temperature sensing circuit;
FIG. 3 is a schematic circuit diagram of a one-stage voltage-dropping circuit;
fig. 4 is a circuit connection diagram of the constant voltage circuit.
Detailed Description
The conception, the specific structure, and the technical effects produced by the present invention will be clearly and completely described below in conjunction with the embodiments and the accompanying drawings to fully understand the objects, the features, and the effects of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and other embodiments obtained by those skilled in the art without inventive labor based on the embodiments of the present invention all belong to the protection scope of the present invention. In addition, all the coupling/connection relationships mentioned herein do not mean that the components are directly connected, but mean that a better coupling structure can be formed by adding or reducing coupling accessories according to specific implementation conditions. All technical characteristics in the invention can be interactively combined on the premise of not conflicting with each other.
Embodiment 1, referring to fig. 1, an NB-IoT room temperature collector based on a single-firewire switch includes: the control module 400 is in communication connection with the NB-IoT wireless module 700 and the temperature detection circuit 600 respectively, the NB-IoT wireless module 700 is an LSD-NB86-G module, the XD-KC024 single live wire relay driving module 100 is used for extracting voltage from a live wire and outputting 8.5-14.5V voltage, the voltage reduction circuit 200 is used for converting the voltage value output by the XD-KC024 single live wire relay driving module 100 into charging voltage, and the charging voltage acts on the storage battery 300. The XD-KC024 single live wire relay driving module 100 and the voltage reduction circuit 200 form a circuit for charging the storage battery 300, and meanwhile, the storage battery 300 is used as a power supply to supply power to the control module 400, the NB-IoT wireless module 700 and the temperature detection circuit 600, so that the problem that the existing single live wire switch needs to frequently replace dry batteries is solved. The core chip is an embedded processor with a model number of MKL16Z128VLH4, and the embedded processor and its peripheral circuits form a basic processor system, which can process signals of the temperature detection circuit 600 and the NB-IoT wireless module 700.
Referring to fig. 2, the temperature detection circuit 600 includes: the temperature sensor U4, the first pull-up resistor R8, the second pull-up resistor R9 and the filter capacitor C7, a pin SCL of the temperature sensor U4 is connected with a pin PTC10 of the embedded processor, a pin SDA of the temperature sensor U4 is connected with a pin PTC11 of the embedded processor, the filter capacitor C7 is connected with a pin VCC and a pin GND of the temperature sensor U4 in parallel, the first pull-up resistor R8 pulls up the pin SCL of the temperature sensor U4, and the second pull-up resistor R9 pulls up the pin SDA of the temperature sensor U4. The temperature sensor U4 is a core, the temperature sensor U4 is a TMP102, and the temperature detection circuit 600 detects the room temperature, and transmits the obtained room temperature data to the control module 400. The control module 400 transmits data to the outside through the NB-IoT radio module 700, and the control module 400 may also receive an external instruction through the NB-IoT radio module 700, thereby performing a corresponding function.
As an optimized implementation manner, the room temperature collector further comprises an LCD display module 500, wherein the LCD display module 500 is composed of a driving chip PCF8553 and an LCD segment code liquid crystal SHT26B, and the driving chip PCF8553 is connected with the control module 400 through an IIC protocol. The LCD display module 500 formed by the driving chip PCF8553 and the LCD segment code liquid crystal SHT26B can realize the display function, and the driving chip PCF8553 and the LCD segment code liquid crystal SHT26B have low power consumption, so that the LCD display module 500 has low power consumption.
As an optimized implementation manner, the voltage dropping circuit 200 adopts a scheme that a one-stage voltage dropping circuit and a constant voltage circuit are matched, wherein the one-stage voltage dropping circuit is used for dropping the voltage output by the XD-KC024 single live wire relay driving module 100 to a floating voltage, and the constant voltage circuit is used for outputting the charging voltage to the floating voltage constantly. Such a scheme can overcome the situation that charging is not ideal due to unstable load of the single live wire switch. Specifically, since the output voltage of the XD-KC024 single-hot-wire relay driving module 100 is greatly affected by the load of the single-hot-wire switch, the output voltage of the XD-KC024 single-hot-wire relay driving module 100 has a certain fluctuation, and if the fluctuation directly acts on the storage battery 300, the storage battery 300 is damaged, and the charging efficiency is reduced. Therefore, in the preferred embodiment, the output voltage of the XD-KC024 single-hot-wire relay driving module 100 is converted into a floating voltage by the first-stage voltage reduction circuit, the floating voltage is made constant by the constant voltage circuit and a charging voltage is output, and the battery 300 is charged by the constant voltage charging, thereby improving the charging efficiency.
With reference to fig. 3, the first-stage voltage-reducing circuit includes: the primary buck circuit takes a buck converter U1 with the model of TPS62120 as a core, an IN end of the buck converter U1 is respectively connected with an anode of a third capacitor C3, one end of a first resistor R1, an output end of an XD-KC024 single-live wire relay driving module 100 +12V and a VCC end of a voltage detector U2, an EN end of the buck converter U1 is respectively connected with the other end of a first resistor R1, one end of a first capacitor C1 and a RESET end of the voltage detector U2, an SW end of the buck converter U1 is connected with one end of a first inductor L1, the other end of the first inductor U2 is connected with one end of a second inductor R1, one end of a first capacitor C3, a first inductor L1 and a floating voltage node +5VNB, an SW end of the buck converter U1 with the model of the TPS62120 is connected with the output end of the first buck converter U1, an EN end of the buck converter U1 is respectively connected with the other end of the first inductor L1, and the other end of the second inductor R6342 and the second, The VOUT terminal of the buck converter U1 and the floating voltage node +5VNB are connected, the other end of the second resistor R2 is connected to the FB terminal of the buck converter U1 and the one end of the third resistor R3, respectively, and the GND terminal of the voltage detector U2, the other end of the first capacitor C1, the GND terminal of the buck converter U1, the other end of the third resistor R3, the other end of the second capacitor C2, and the cathode of the third capacitor C3 are all connected to ground. The above circuit configuration constitutes a basic peripheral circuit of the buck converter U1, so that the buck converter U1 can perform buck conversion on the output voltage of the XD-KC024 single-hot-wire relay driving module 100.
Referring to fig. 4, the constant voltage circuit includes: the constant voltage circuit is characterized in that a constant voltage chip U3 with the model number ME4067, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, a fourth capacitor C4, a fifth capacitor C5 and a sixth capacitor C6 are arranged, a VCC end of the constant voltage chip U3 is respectively connected with one end of the fourth capacitor C4, one end of the fifth capacitor C5 and a floating voltage node +5VNB, the constant voltage circuit takes the constant voltage chip U3 with the model number ME4067 as a core, a CE end of the constant voltage chip U3 is connected with one end of the fourth resistor R4, a TEMP end of the constant voltage chip U3 is connected with one end of the fifth resistor R5, a BAT end of the constant voltage chip U3 is respectively connected with one end of the sixth capacitor C6 and one end of the seventh resistor R7, an IRS end of the constant voltage chip U3 is connected with one end of the sixth resistor R6, and the other end of the fourth capacitor C4, the other end of the fifth capacitor C4 and the constant voltage chip R4 and the other end of the constant voltage resistor R4, The other end of the sixth resistor R6 and the other end of the sixth capacitor C6 are both connected to ground, the other end of the seventh resistor R7 is connected to the positive electrode of the battery 300, and the other end of the seventh resistor R7 outputs a charging voltage. The above-described circuit configuration constitutes a basic operation circuit of the constant voltage chip U3, so that the constant voltage chip U3 can output a constant charging voltage.
In some preferred embodiments, the one-stage voltage-reducing circuit further includes: and the cathode of the voltage stabilizing diode D1 is connected with the anode of the third capacitor C3, and the anode of the voltage stabilizing diode D1 is connected with the cathode of the third capacitor C3. The output voltage of the XD-KC024 single live wire relay drive module 100 can be stabilized by the voltage stabilizing diode D1.
In some preferred embodiments, the one-stage voltage-reducing circuit further includes: a Schottky diode D2, the cathode of the Schottky diode D2 is connected with the SW terminal of the buck converter U1, and the anode of the Schottky diode D2 is connected to the ground. The surge generated by the first inductor L1 can be absorbed by the schottky diode D2, and the SW terminal of the buck converter U1 is protected.
While the preferred embodiments of the present invention have been described in detail, it will be understood by those skilled in the art that the invention is not limited to the details of the embodiments shown, but is capable of various modifications and changes without departing from the spirit of the invention.
Claims (10)
1. An NB-IoT room temperature collector based on a single firewire switch, comprising: control module, battery, NB-IoT wireless module and temperature detect circuit, control module with respectively NB-IoT wireless module, temperature detect circuit communication connection, its characterized in that still includes: the device comprises an XD-KC024 single live wire relay driving module and a voltage reduction circuit, wherein the XD-KC024 single live wire relay driving module is used for extracting voltage from a live wire and outputting 8.5-14.5V voltage, and the voltage reduction circuit is used for converting the voltage value output by the XD-KC024 single live wire relay driving module into charging voltage, and the charging voltage acts on a storage battery.
2. The NB-IoT room temperature collector based on a single firewire switch as claimed in claim 1, wherein the detection chip of the temperature detection circuit is TMP 102.
3. The NB-IoT room temperature collector based on a single firewire switch as claimed in claim 1 further comprising an LCD display module, wherein the LCD display module is connected with the control module.
4. The NB-IoT room temperature collector based on a single firewire switch as claimed in claim 1, wherein the model of the core chip of the control module is MKL16Z128VLH 4.
5. The NB-IoT room temperature collector based on a single firewire switch as claimed in claim 1, wherein the NB-IoT wireless module is LSD-NB86-G module.
6. The NB-IoT room temperature collector based on a single firewire switch of claim 1, wherein the voltage dropping circuit comprises: the voltage value output by the XD-KC024 single live wire relay driving module is reduced to a floating voltage, and the constant voltage circuit is used for outputting the floating voltage to a charging voltage constantly.
7. The NB-IoT room temperature collector based on a single firewire switch of claim 6, wherein the primary voltage-dropping circuit comprises: the voltage-reducing converter is of the model TPS62120, the voltage detector is of the model ME2808, the first resistor, the second resistor, the third resistor, the first capacitor, the second capacitor, the third capacitor, the first inductor and the floating voltage node, an IN end of the voltage-reducing converter is respectively connected with an anode of the third capacitor, one end of the first resistor, an output end of the XD-KC024 single live wire relay driving module and a VCC end of the voltage detector, an EN end of the voltage-reducing converter is respectively connected with the other end of the first resistor, one end of the first capacitor and a RESET end of the voltage detector, an SW end of the voltage-reducing converter is connected with one end of the first inductor, the other end of the first inductor is respectively connected with one end of the second capacitor, one end of the second resistor, a VOUT end of the voltage-reducing converter and the floating voltage node, the other end of the second resistor is respectively connected with an FB end of the voltage-reducing converter and one end of, the GND end of the voltage detector, the other end of the first capacitor, the GND end of the buck converter, the other end of the third resistor, the other end of the second capacitor and the cathode of the third capacitor are all connected to the ground.
8. The NB-IoT room temperature collector based on a single firewire switch of claim 6, wherein the constant voltage circuit comprises: a constant voltage chip with the model number ME4067, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, a fourth capacitor, a fifth capacitor and a sixth capacitor, the VCC end of the constant voltage chip is respectively connected with one end of the fourth capacitor, one end of the fifth capacitor and the floating voltage node, the CE end of the constant voltage chip is connected with one end of the fourth resistor, the TEMP end of the constant voltage chip is connected with one end of the fifth resistor, the BAT end of the constant voltage chip is respectively connected with one end of the sixth capacitor and one end of the seventh resistor, the IRS end of the constant voltage chip is connected with one end of the sixth resistor, the other end of the fourth capacitor, the other end of the fifth capacitor, the other end of the fourth resistor, the other end of the fifth resistor, the GND end of the constant voltage chip, the other end of the sixth resistor and the other end of the sixth capacitor are all connected to the ground, and the other end of the seventh resistor outputs charging voltage.
9. The NB-IoT room temperature collector based on a single firewire switch as claimed in claim 7, wherein the primary voltage dropping circuit further comprises: and the cathode of the voltage stabilizing diode is connected with the anode of the third capacitor, and the anode of the voltage stabilizing diode is connected with the cathode of the third capacitor.
10. The NB-IoT room temperature collector based on a single firewire switch as claimed in claim 7, wherein the primary voltage dropping circuit further comprises: and the cathode of the Schottky diode is connected with the SW end of the buck converter, and the anode of the Schottky diode is connected to the ground.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921405559.7U CN210430994U (en) | 2019-08-27 | 2019-08-27 | NB-IoT room temperature collector based on single live wire switch |
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| CN201921405559.7U CN210430994U (en) | 2019-08-27 | 2019-08-27 | NB-IoT room temperature collector based on single live wire switch |
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| CN210430994U true CN210430994U (en) | 2020-04-28 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111765983A (en) * | 2020-07-08 | 2020-10-13 | 济南普赛通信技术有限公司 | Circuit of socket type room temperature collector and temperature measurement correction method |
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2019
- 2019-08-27 CN CN201921405559.7U patent/CN210430994U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111765983A (en) * | 2020-07-08 | 2020-10-13 | 济南普赛通信技术有限公司 | Circuit of socket type room temperature collector and temperature measurement correction method |
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