CN215731396U - Internet of things switching circuit applied to automatic change-over switch - Google Patents
Internet of things switching circuit applied to automatic change-over switch Download PDFInfo
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- CN215731396U CN215731396U CN202121455784.9U CN202121455784U CN215731396U CN 215731396 U CN215731396 U CN 215731396U CN 202121455784 U CN202121455784 U CN 202121455784U CN 215731396 U CN215731396 U CN 215731396U
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Abstract
The utility model relates to an Internet of things conversion circuit applied to an automatic change-over switch, which comprises a first direct current voltage reduction module, a second direct current voltage reduction module, a third direct current voltage reduction module, a control module, a communication module, an energy storage circuit, a comparison circuit, an AND gate circuit and a communication medium, wherein the control module is respectively connected with the second direct current voltage reduction module, the AND gate circuit, the energy storage circuit and the communication module, the first direct current voltage reduction module is connected with the communication module through the third direct current voltage reduction module, the energy storage circuit is connected between the first direct current voltage reduction module and the third direct current voltage reduction module, the comparison circuit is connected with the AND gate circuit, and the AND gate circuit is connected with the first direct current voltage reduction module. The Internet of things switching circuit provided by the utility model can provide electric energy for the communication module through the electric energy stored by the energy storage circuit, so that the power supply of the automatic change-over switch can work normally under the condition that the communication module sends data normally.
Description
Technical Field
The utility model belongs to the technical field of low-voltage power distribution and automatic change-over switches, and particularly relates to an Internet of things change-over circuit applied to an automatic change-over switch.
Background
The automatic change-over switch is a switching device which is controlled by a microprocessor, is suitable for switching between grid power and grid power, and between grid power and a generator power supply in a power grid system, can be automatically changed into a standby power state to continue running through the automatic change-over switch when a sudden failure or power failure of common power occurs, and is power distribution equipment which is wide in application range, complete in performance, high in automation degree, safe and reliable.
At the present stage, more and more digitalization demands are needed, the contents of states, data, alarms and the like of low-voltage distribution equipment need to be transmitted to a background server through a wireless network and provided for a user to have more digitalization functions, and more digitalization demands are also needed for an automatic change-over switch, and the alarms or voltage abnormal data of the automatic change-over switch need to be wirelessly transmitted to a cloud server through an internet of things module.
At the in-process of thing networking module at the data of sending, because automatic change over switch's controller need give thing networking module power supply, and the power output consumption of considering the controller based on the cost is limited, and thing networking module also needs great instantaneous power consumption when sending data, prior art often realizes the power supply for thing networking module through the whole power consumption that improves automatic change over switch, and this kind of mode has following defect:
old product digital upgrading difficulty, it is with high costs: if the old product is digitally upgraded, the power supply of the automatic transfer switch controller needs to be upgraded, the cost is increased, the change caused by upgrading is large, more research and development resources need to be invested, and the implementation is difficult.
In order to support the expansion of the functions of the internet of things module, a controller of the automatic change-over switch needs to increase the power consumption of a power supply, namely, the cost of all the automatic change-over switches is increased without configuring the internet of things module.
In the prior art, a common battery can be used for supplying power to the Internet of things module, the temperature requirement of the application of the power distribution industry and the industrial environment is higher, the common battery is difficult to meet the requirement, the cost of the battery applied at a special temperature is too high, the battery needs to be replaced regularly, and the use is troublesome.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects of the prior art, provides an Internet of things conversion circuit applied to an automatic conversion switch, and solves the problem that the power supply provided by the automatic conversion switch for an Internet of things module is insufficient.
The technical problem to be solved by the utility model is realized by adopting the following technical scheme:
an Internet of things conversion circuit applied to an automatic change-over switch comprises a first direct current voltage reduction module, a second direct current voltage reduction module, a third direct current voltage reduction module, a control module, a communication module, an energy storage circuit, a comparison circuit, an AND gate circuit and a communication medium,
the input ends of the first direct current voltage reduction module and the second direct current voltage reduction module are connected with the power output end of the automatic transfer switch controller, the control module is communicated with the serial port of the automatic transfer switch controller,
the output end of the first direct current voltage reduction module is connected with the input end of the third direct current voltage reduction module, the output end of the third direct current voltage reduction module is connected with the power input end of the communication module, the communication module is connected with the communication medium,
the energy storage circuit is connected between the first direct current voltage reduction module and the third direct current voltage reduction module,
the output end of the second direct current voltage reduction module is connected with the power input end of the control module, the control module is respectively connected with the energy storage circuit, the communication module and the AND gate circuit,
the comparison circuit is respectively connected with the second direct current voltage reduction module and the input end of the AND gate circuit,
the output end of the AND gate circuit is connected with the enabling end of the first direct current voltage reduction module;
preferably, the control module is provided with an analog-to-digital conversion chip, and the analog-to-digital conversion chip is used for converting the analog signal of the energy storage circuit into a digital signal;
preferably, the energy storage circuit comprises a capacitor C1, a first resistor R1 and a diode D1, one end of the capacitor C1 is connected with the output end of the first dc voltage reduction module through the first resistor R1, the other end of the capacitor C1 is grounded, the anode of the diode D1 is connected with one end of the capacitor C1, the cathode of the diode D1 is connected with the output end of the first dc voltage reduction module, and the anode of the diode D1 and one end of the capacitor C1 are connected with the analog-to-digital conversion chip;
preferably, the comparator circuit includes a comparator, a second resistor R2, a third resistor R3 and a fourth resistor R4, one end of the second resistor R2 is connected to a power output end of the automatic transfer switch controller, the other end of the second resistor R2 is connected to one end of the third resistor R3, the other end of the third resistor R3 is grounded, a same-direction input end of the comparator is connected to the second resistor R2 and the third resistor R3, respectively, an opposite-direction input end of the comparator is connected to one end of the fourth resistor R4, the other end of the fourth resistor R4 is connected to an output end of the second dc voltage-reducing module, and an output end of the comparator is connected to an input end of the and circuit;
preferably, the communication module is a narrowband internet of things.
The utility model has the advantages and positive effects that:
the utility model relates to an Internet of things conversion circuit applied to an automatic change-over switch, which comprises a first direct current voltage reduction module, a second direct current voltage reduction module, a third direct current voltage reduction module, a control module, a communication module, an energy storage circuit, a comparison circuit, an AND gate circuit and a communication medium, the second direct current voltage reduction module is connected with the control module, the control module is connected with the communication module, the communication module is connected with a communication medium, the control module is connected with the AND gate circuit, the first direct current voltage reduction module is connected with the third direct current voltage reduction module, the third direct current voltage reduction module is connected with the communication module, the energy storage circuit is connected between the first direct current voltage reduction module and the third direct current voltage reduction module, the comparison circuit is connected with the AND gate circuit, and the AND gate circuit is connected with the first direct current voltage reduction module. According to the Internet of things switching circuit provided by the utility model, on the premise that the power consumption of the automatic switching switch is not increased, when the communication module needs a larger instantaneous power supply time, the electric energy stored by the energy storage circuit can be used for supplying the electric energy to the communication module, so that the power supply of the automatic switching switch can work normally under the condition that the Internet of things module normally sends data.
Drawings
Fig. 1 is a circuit diagram of an internet of things module applied to an automatic transfer switch according to the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The utility model provides an Internet of things conversion circuit applied to an automatic change-over switch, which comprises a first direct current voltage reduction module, a second direct current voltage reduction module, a third direct current voltage reduction module, a control module, a communication module, an energy storage circuit, a comparison circuit, an AND gate circuit and a communication medium as shown in figure 1,
the input ends of the first direct current voltage reduction module and the second direct current voltage reduction module are connected with the power output end of the automatic transfer switch controller and used for providing power for the Internet of things transfer circuit, the control module is communicated with the serial port of the automatic transfer switch controller and used for realizing data transfer between the automatic transfer switch controller and the control module,
the output end of the first direct current voltage reduction module is connected with the input end of the third direct current voltage reduction module and is used for providing a stabilized voltage supply for the third direct current voltage reduction module, the output end of the third direct current voltage reduction module is connected with the power supply input end of the communication module and is used for providing a stabilized voltage supply for the communication module, the communication module is connected with the communication medium and is used for data transmission of the communication module,
the energy storage circuit is connected between the first direct current voltage reduction module and the third direct current voltage reduction module and is used for providing power supply for the communication module when sending data,
the output end of the second direct current voltage reduction module is connected with the power input end of the control module and used for providing a stabilized voltage supply for the control module, the control module is respectively connected with the energy storage circuit, the communication module and the AND gate circuit and respectively used for monitoring the energy storage electric quantity of the energy storage circuit, realizing data exchange with the communication module, controlling the on-off of the communication module and inputting a level signal to the AND gate circuit,
the comparison circuit is respectively connected with the second direct current voltage reduction module and the input end of the AND gate circuit and is used for monitoring the input and output voltage of the second direct current voltage reduction module and inputting a level signal to the AND gate circuit,
and the output end of the AND gate circuit is connected with the enabling end of the first direct current voltage reduction module and is used for controlling the switch of the first direct current voltage reduction module.
In this embodiment, the control module is provided with an analog-to-digital conversion chip, and the analog-to-digital conversion chip is configured to convert an analog signal of the energy storage circuit into a digital signal, so that the control module monitors the storage voltage of the energy storage circuit.
In this embodiment, the energy storage circuit includes a capacitor C1, a first resistor R1, and a diode D1, one end of the capacitor C1 is connected to the output end of the first dc voltage dropping module through the first resistor R1, the other end of the capacitor C1 is grounded, the anode of the diode D1 is connected to one end of the capacitor C1, the cathode of the diode D1 is connected to the output end of the first dc voltage dropping module, the anode of the diode D1 and one end of the capacitor C1 are connected to the analog-to-digital conversion chip, so that the control module monitors the voltage value of the capacitor C1, and when the voltage value of the capacitor C1 is the maximum value, the diode D1 provides power to the voltage stabilizing unit, and the voltage stabilizing power supply can ensure that the output voltage of the capacitor C1 is stable, thereby ensuring the voltage stability of the communication module.
In this embodiment, the comparator circuit includes a comparator, a second resistor R2, a third resistor R3, and a fourth resistor R4, one end of the second resistor R2 is connected to a power output terminal of the automatic transfer switch controller, the other end of the second resistor R2 is connected to one end of the third resistor R3, the other end of the third resistor R3 is grounded, a same-direction input terminal of the comparator is connected to the second resistor R2 and the third resistor R3, a reverse-direction input terminal of the comparator is connected to one end of the fourth resistor R4, the other end of the fourth resistor R4 is connected to an output terminal of the second dc step-down module, and an output terminal of the comparator is connected to an input terminal of the and circuit,
the specific working process of the comparison circuit is as follows: the output voltage of the power output end of the automatic transfer switch controller is subjected to voltage division processing by the second resistor R2 and the third resistor R3 and then compared with the output voltage of the second direct current voltage reduction module, when the output voltage of the power output end of the automatic transfer switch controller is smaller than the output voltage of the second direct current voltage reduction module, the power output power of the power output end of the automatic transfer switch controller is considered to be insufficient, a power supply of a conversion circuit of the internet of things needs to be quickly turned off to ensure normal work of the automatic transfer switch controller, at the moment, the comparator outputs 0 and sends the 0 to the input end of the AND gate circuit, and when the output voltage of the power output end of the automatic transfer switch controller is normal, the comparator outputs 1 and sends the 1 to the input end of the AND gate circuit.
Preferably, the communication module is a narrowband internet of things (NB-IoT).
Preferably, the control module is model number STM32L 476.
Preferably, the first dc voltage reduction module and the second dc voltage reduction module are both FR 9801.
Preferably, the model of the third dc voltage reduction module is TLV 1117.
Preferably, the communication medium may be an antenna, radio waves or infrared rays.
Principle of operation
When the IOT conversion circuit needs to be powered on to work, the second direct current voltage reduction module outputs 3.3V voltage by default to provide electric energy for the control module, at the moment, the control module is in a high power consumption initial state, the control module respectively sends low level signals to the AND gate circuit and the communication module to enable the first direct current voltage reduction module and the IOT module not to work, after the IOT conversion circuit is powered on and delayed, the power output end of the automatic conversion switch controller provides 12V stable voltage for the IOT conversion circuit,
the control module sends a high level signal to an input end of the AND gate circuit, the comparison circuit sends a high level signal to an input end of the AND gate circuit, so that an output end of the AND gate circuit inputs a high level signal to the first direct current voltage reduction module, the first direct current voltage reduction module is started, the first direct current voltage reduction module inputs 5.5V voltage to the third direct current voltage reduction module, constant voltage charging is carried out on the capacitor C1 through current limiting of the first resistor R1, power consumption of the 5.5V voltage output by the first direct current voltage reduction module is guaranteed to be within a certain limit through selection of a proper resistance value of the first resistor R1, power output of the automatic switching controller cannot be influenced, and the communication module is in a stop state at the moment.
When the control module receives data information such as an alarm or voltage abnormality sent by an automatic transfer switch controller, an analog-to-digital conversion chip of the control module judges whether the capacitor C1 is in a full-charge state, if the capacitor C1 is fully charged, a low level signal is sent to an input end of the and circuit through the control module, so that the first direct current voltage reduction module stops working, meanwhile, a high level signal is sent to the communication module through the control module, the communication module is started, at the moment, the capacitor C1 supplies electric energy to the third direct current voltage reduction module through the diode D1, the first direct current voltage reduction module can ensure stable output voltage, so that the power supply voltage of the communication module is stable, the control module sends data information after operation and processing to the communication module, and the communication module sends information to a cloud through a communication medium, and after the message is successfully sent, the control module sends a low level signal to the communication module and stops the communication module.
After the actions are completed, the control module sends a high level signal to the input end of the and circuit, so that the first dc voltage reduction module starts to work to continue to charge the capacitor C1 at a constant voltage, because the communication module needs to send a small amount of data, the frequency of the sent data is extremely low, and the real-time requirement for sending is not high, when the data needs to be sent, if the analog-to-digital conversion chip judges that the voltage of the capacitor C1 is insufficient, the control module can cache the data to be sent, and after the capacitor C1 is fully charged at a constant voltage, the third dc voltage reduction module is used for providing electric energy for the communication module.
It should be emphasized that the embodiments described herein are illustrative rather than restrictive, and thus the present invention is not limited to the embodiments described in the detailed description, but also includes other embodiments that can be derived from the technical solutions of the present invention by those skilled in the art.
Claims (5)
1. The utility model provides a be applied to automatic change over switch's thing networking converting circuit which characterized in that: comprises a first direct current voltage reduction module, a second direct current voltage reduction module, a third direct current voltage reduction module, a control module, a communication module, an energy storage circuit, a comparison circuit, an AND gate circuit and a communication medium,
the input ends of the first direct current voltage reduction module and the second direct current voltage reduction module are connected with the power output end of the automatic transfer switch controller, the control module is communicated with the serial port of the automatic transfer switch controller,
the output end of the first direct current voltage reduction module is connected with the input end of the third direct current voltage reduction module, the output end of the third direct current voltage reduction module is connected with the power input end of the communication module, the communication module is connected with the communication medium,
the energy storage circuit is connected between the first direct current voltage reduction module and the third direct current voltage reduction module,
the output end of the second direct current voltage reduction module is connected with the power input end of the control module, the control module is respectively connected with the energy storage circuit, the communication module and the AND gate circuit,
the comparison circuit is respectively connected with the second direct current voltage reduction module and the input end of the AND gate circuit,
and the output end of the AND gate circuit is connected with the enabling end of the first direct current voltage reduction module.
2. The internet of things switching circuit applied to the automatic transfer switch, according to claim 1, wherein: the control module is provided with an analog-to-digital conversion chip which is used for converting the analog signal of the energy storage circuit into a digital signal.
3. The internet of things switching circuit applied to the automatic transfer switch, according to claim 2, wherein: the energy storage circuit comprises a capacitor C1, a first resistor R1 and a diode D1, one end of the capacitor C1 is connected with the output end of the first direct current voltage reduction module through a first resistor R1, the other end of the capacitor C1 is grounded, the anode of the diode D1 is connected with one end of the capacitor C1, the cathode of the diode D1 is connected with the output end of the first direct current voltage reduction module, and the anode of the diode D1 and one end of the capacitor C1 are connected with the analog-to-digital conversion chip.
4. The internet of things switching circuit applied to the automatic transfer switch, according to claim 1, wherein: the comparison circuit comprises a comparator, a second resistor R2, a third resistor R3 and a fourth resistor R4, one end of the second resistor R2 is connected with a power output end of the automatic transfer switch controller, the other end of the second resistor R2 is connected with one end of the third resistor R3, the other end of the third resistor R3 is grounded, the homodromous input end of the comparator is respectively connected with the second resistor R2 and the third resistor R3, the reverse input end of the comparator is connected with one end of the fourth resistor R4, the other end of the fourth resistor R4 is connected with the output end of the second direct current voltage reduction module, and the output end of the comparator is connected with the input end of the AND gate circuit.
5. The internet of things switching circuit applied to the automatic transfer switch, according to claim 1, wherein: the communication module is a narrow-band Internet of things.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121455784.9U CN215731396U (en) | 2021-06-29 | 2021-06-29 | Internet of things switching circuit applied to automatic change-over switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121455784.9U CN215731396U (en) | 2021-06-29 | 2021-06-29 | Internet of things switching circuit applied to automatic change-over switch |
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| Publication Number | Publication Date |
|---|---|
| CN215731396U true CN215731396U (en) | 2022-02-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121455784.9U Active CN215731396U (en) | 2021-06-29 | 2021-06-29 | Internet of things switching circuit applied to automatic change-over switch |
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| CN (1) | CN215731396U (en) |
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- 2021-06-29 CN CN202121455784.9U patent/CN215731396U/en active Active
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