CN111024993A - Feed electric quantity monitoring system - Google Patents

Feed electric quantity monitoring system Download PDF

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Publication number
CN111024993A
CN111024993A CN201911295849.5A CN201911295849A CN111024993A CN 111024993 A CN111024993 A CN 111024993A CN 201911295849 A CN201911295849 A CN 201911295849A CN 111024993 A CN111024993 A CN 111024993A
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CN
China
Prior art keywords
resistor
triode
module
electric quantity
diode
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Pending
Application number
CN201911295849.5A
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Chinese (zh)
Inventor
俞立
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Guangzhou Kestar Power Equipment Co Ltd
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Guangzhou Kestar Power Equipment Co Ltd
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Application filed by Guangzhou Kestar Power Equipment Co Ltd filed Critical Guangzhou Kestar Power Equipment Co Ltd
Priority to CN201911295849.5A priority Critical patent/CN111024993A/en
Publication of CN111024993A publication Critical patent/CN111024993A/en
Pending legal-status Critical Current

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
    • G01R1/36—Overload-protection arrangements or circuits for electric measuring instruments
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R22/00—Arrangements for measuring time integral of electric power or current, e.g. electricity meters
    • G01R22/06—Arrangements for measuring time integral of electric power or current, e.g. electricity meters by electronic methods
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
    • G01R31/385—Arrangements for measuring battery or accumulator variables
    • G01R31/387—Determining ampere-hour charge capacity or SoC

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Measurement Of Current Or Voltage (AREA)

Abstract

The invention relates to the field of electric quantity monitoring, and discloses a feed electric quantity monitoring system which comprises a single chip microcomputer, an electric quantity sensor module, a wireless communication module, a display module, a clock module and a power supply module, wherein the single chip microcomputer is respectively connected with the electric quantity sensor module, the wireless communication module, the display module, the clock module and the power supply module; the power supply module comprises a first resistor, a fifth resistor, a first triode, a second resistor, a second triode, a first capacitor, a voltage input end, a transformer, a first diode, a voltage output end, a third triode, a third resistor, a fourth triode, a fourth resistor and a second capacitor, one end of the first resistor is connected with one end of the fifth resistor, and the other end of the fifth resistor is connected with a base electrode of the first triode. The feed electric quantity monitoring system has the following beneficial effects: the circuit structure is simpler, the cost is lower, convenient maintenance, the security and the reliability of circuit are higher.

Description

Feed electric quantity monitoring system
Technical Field
The invention relates to the field of power monitoring, in particular to a feed power monitoring system.
Background
With the rapid development of the internet of things, a new digital era comes, people have higher and higher requirements on digitization, and the functions and applications of office networks are expanded to families, so that an intelligent home network system is produced. The intelligent home network system constructs a safe, comfortable and convenient living environment for people from the digitalization and intelligentization angles, adapts to the fast pace of the current information society, and enables the life, work and entertainment of people to be more modern. The household power supply system is an important component of an intelligent household network system and is vital to electric quantity monitoring of the household power supply system. The traditional electric quantity monitoring system can realize wireless control and data wireless transmission of equipment, can also display information such as current flow conditions, working conditions and the like, and realizes intelligent operation and monitoring of a household power supply system. The power supply part of the traditional power monitoring system uses more components, the circuit structure is complex, the hardware cost is high, and the maintenance is inconvenient. In addition, since the power supply part of the conventional power monitoring system lacks the corresponding circuit protection function, for example: the safety and reliability of the circuit are poor due to the lack of the current-limiting protection function.
Disclosure of Invention
The technical problem to be solved by the present invention is to provide a feeding power monitoring system with simple circuit structure, low cost, convenient maintenance, and high circuit safety and reliability, aiming at the above defects of the prior art.
The technical scheme adopted by the invention for solving the technical problems is as follows: the feed electric quantity monitoring system is constructed and comprises a single chip microcomputer, an electric quantity sensor module, a wireless communication module, a display module, a clock module and a power supply module, wherein the single chip microcomputer is respectively connected with the electric quantity sensor module, the wireless communication module, the display module, the clock module and the power supply module;
the power supply module comprises a first resistor, a fifth resistor, a first triode, a second resistor, a second triode, a first capacitor, a voltage input end, a transformer, a first diode, a voltage output end, a third triode, a third resistor, a fourth triode, a fourth resistor and a second capacitor, one end of the first resistor is connected with one end of the fifth resistor, the other end of the fifth resistor is connected with a base electrode of the first triode, the voltage input end is connected with one end of a primary coil of the transformer, the other end of the primary coil of the transformer is connected with a collector electrode of the third triode, one end of a secondary coil of the transformer is connected with an anode of the first diode, and a cathode of the first diode is respectively connected with the voltage output end, the other end of the first resistor, the collector electrode of the first triode, The base of the third triode, the collector of the second triode, one end of the second resistor, the base of the fourth triode, one end of the fourth resistor and one end of the second capacitor are connected, the emitter of the first triode is respectively connected with the other end of the second resistor, the base of the second triode, one end of the first capacitor, the collector of the fourth triode and one end of the fourth resistor, the emitter of the second triode is grounded, the emitter of the third triode is respectively connected with the other end of the first capacitor, the emitter of the fourth triode and one end of the third resistor, the other end of the third resistor is grounded, and the other end of the second capacitor is grounded.
In the feed electric quantity monitoring system, the resistance value of the fifth resistor is 36k Ω.
In the feed electric quantity monitoring system of the present invention, the power supply module further includes a second diode, an anode of the second diode is connected to one end of the second resistor, and a cathode of the second diode is connected to a base of the fourth triode.
In the feeding electric quantity monitoring system, the type of the second diode is E-272.
In the feed electric quantity monitoring system of the present invention, the power supply module further includes a third diode, an anode of the third diode is connected to an emitter of the first triode, and a cathode of the third diode is connected to a base of the second triode.
In the feeding electric quantity monitoring system, the type of the third diode is L-1822.
In the feed electric quantity monitoring system of the present invention, the first triode, the second triode, and the third triode are all NPN-type triodes.
In the feed electric quantity monitoring system of the present invention, the fourth triode is a PNP type triode.
In the feed electric quantity monitoring system of the present invention, the wireless communication module is any one or a combination of any several of a 5G communication module, a 4G communication module, a bluetooth module, a WiFi module, a GSM module, a CDMA2000 module, a WCDMA module, a TD-SCDMA module, a Zigbee module, and a LoRa module.
The feed electric quantity monitoring system has the following beneficial effects: the power supply module has fewer used components compared with the power supply part of the traditional electric quantity monitoring system, and can reduce the hardware cost due to saving of some components, and in addition, the fifth resistor is used for current limiting protection, so the circuit structure of the invention is simpler, the cost is lower, the maintenance is convenient, and the safety and the reliability of the circuit are higher.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a feeding power monitoring system according to an embodiment of the present invention;
fig. 2 is a schematic circuit diagram of the power supply module in the embodiment.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the embodiment of the feeding power monitoring system of the present invention, a schematic structural diagram of the feeding power monitoring system is shown in fig. 1. In fig. 1, the feed electric quantity monitoring system comprises a single chip microcomputer 1, an electric quantity sensor module 2, a wireless communication module 3, a display module 4, a clock module 5 and a power supply module 6, wherein the single chip microcomputer 1 is respectively connected with the electric quantity sensor module 2, the wireless communication module 3, the display module 4, the clock module 5 and the power supply module 6.
The electric quantity sensor module 2 collects electric quantity information and transmits the collected electric quantity information to the single chip microcomputer 1, the single chip microcomputer 1 sends out control instructions and information data to the outside through the wireless communication module 3 after processing the electric quantity information, and meanwhile, the electric quantity information is sent to the display module 4 to be displayed. The singlechip 1 is an ATXMEGA256A3-A chip. The clock module 5 is used for providing a real-time clock signal, and the power supply module 6 is used for supplying power to the singlechip 1.
In this embodiment, the wireless communication module 3 is any one or a combination of any several of a 5G communication module, a 4G communication module, a bluetooth module, a WiFi module, a GSM module, a CDMA2000 module, a WCDMA module, a TD-SCDMA module, a Zigbee module, and a LoRa module. Through setting up multiple wireless communication mode, not only can increase the flexibility of wireless communication mode, can also satisfy the demand of different users and different occasions. Especially, when adopting the loRa module, its communication distance is far away, and communication performance is comparatively stable, is applicable to the occasion that requires the communication quality to be higher. The adoption of the 5G communication mode can achieve high data rate, reduce delay, save energy, reduce cost, improve system capacity and realize large-scale equipment connection.
Fig. 2 is a schematic circuit diagram of a power supply module in this embodiment, in fig. 2, the power supply module 6 includes a first resistor R1, a fifth resistor R5, a first transistor Q1, a second resistor R2, a second transistor Q2, a first capacitor C1, a voltage input terminal Vin, a transformer T, a first diode D1, a voltage output terminal Vo, a third transistor Q3, a third resistor R3, a fourth transistor Q4, a fourth resistor R4, and a second capacitor C2, wherein one end of the first resistor R1 is connected to one end of a fifth resistor R5, the other end of the fifth resistor R5 is connected to a base of the first transistor Q1, the voltage input terminal Vin is connected to one end of a primary winding of the transformer T, the other end of the primary winding of the transformer T is connected to a collector of the third transistor Q3, one end of a secondary winding of the transformer T is connected to an anode of the first diode D1, and a cathode of the first diode D1 is connected to a voltage output terminal of the voltage output terminal Vo, The other end of the first resistor R1, the collector of the first triode Q1, the base of the third triode Q3, the collector of the second triode Q2, one end of the second resistor R2, the base of the fourth triode Q4, one end of the fourth resistor R4 and one end of the second capacitor C2 are connected, the emitter of the first triode Q1 is connected with the other end of the second resistor R2, the base of the second triode Q2, one end of the first capacitor C1, the collector of the fourth triode Q4 and one end of the fourth resistor R4, respectively, the emitter of the second triode Q2 is grounded, the emitter of the third triode Q3 is connected with the other end of the first capacitor C1, the emitter of the fourth triode Q4 and one end of the third resistor R3, the other end of the third resistor R3 is grounded, and the other end of the second capacitor C2 is grounded.
Compared with the power supply part of the traditional power monitoring system, the power supply module 6 has the advantages of fewer used components, simpler circuit structure and convenience in maintenance, and can reduce the hardware cost due to the fact that some components are saved. In addition, the fifth resistor R5 is a current limiting resistor, and is used for current limiting protection of the base current of the first transistor Q1. The current limiting protection principle is as follows: when the base current of the first triode Q1 is large, the base current of the first triode Q1 can be reduced by the fifth resistor R5 to keep the base current in a normal working state, and the elements in the circuit are not burnt out due to too large current, so that the safety and reliability of the circuit are high. It should be noted that, in the present embodiment, the resistance of the fifth resistor R5 is 36k Ω. Of course, in practical applications, the resistance of the fifth resistor R5 may be adjusted accordingly, that is, the resistance of the fifth resistor R5 may be increased or decreased accordingly.
The working principle of the power supply module 6 is as follows: the voltage of the voltage input end Vin is transformed by the transformer T, then passes through the first diode D1, and outputs the voltage through the voltage output end Vo, and the third triode Q3, the third resistor R3, the second triode Q2 and other elements form an input end overcurrent protection circuit. In normal operation, the fourth transistor Q4 is disabled because the emitter voltage is less than the base voltage. When the power supply output current is too large, the current of the third transistor Q3 sharply increases, and the voltage on the third resistor R3 rapidly rises, i.e., the emitter voltage of the fourth transistor Q4 rapidly rises. When the emitter junction voltage of the fourth triode Q4 rises to 0.7V, the fourth triode Q4 is in saturated conduction, the voltage on the third resistor R3 is directly applied to the base of the second triode Q2, so that the second triode Q2 is conducted, the third triode Q3 is cut off, and an overcurrent protection effect is achieved, the first resistor R1, the fifth resistor R5 and the first triode Q1 in the circuit form an output end overvoltage protection circuit, when the voltage of the voltage output end Vo is too high, the voltage divided by the first resistor R1 and the second resistor R2 enables the first triode Q1 to be conducted, the base of the second triode Q2 is also electrically conducted, and therefore the third triode Q3 is cut off, and the electric load is effectively protected.
In this embodiment, the first transistor Q1, the second transistor Q2, and the third transistor Q3 are all NPN transistors, and the fourth transistor Q4 is a PNP transistor. Certainly, in practical applications, the first transistor Q1, the second transistor Q2, and the third transistor Q3 may also all adopt PNP transistors, and the fourth transistor Q4 may also adopt NPN transistors, but the circuit structure is also changed accordingly.
In this embodiment, the power supply module 6 further includes a second diode D2, an anode of the second diode D2 is connected to one end of the second resistor R2, and a cathode of the second diode D2 is connected to a base of the fourth transistor Q4. The second diode D2 is a current limiting diode for current limiting protection. The current limiting protection principle is as follows: when the current of the branch where the second diode D2 is located is large, the current of the branch where the second diode D2 is located can be reduced by the second diode D2, so that the branch can be kept in a normal operating state, and the components in the circuit cannot be burned out due to the large current, so as to further enhance the safety and reliability of the circuit. It should be noted that in the present embodiment, the second diode D2 has a model E-272. Of course, in practical applications, the second diode D2 may also be another type of diode with the same function.
In this embodiment, the power supply module 6 further includes a third diode D3, an anode of the third diode D3 is connected to an emitter of the first transistor Q1, and a cathode of the third diode D3 is connected to a base of the second transistor Q2. The third diode D3 is a current limiting diode, and is used for current limiting protection of the base current of the second transistor Q2. The current limiting protection principle is as follows: when the base current of the second triode Q2 is large, the base current of the second triode Q2 can be reduced by the third diode D3 to keep the second triode Q2 in a normal working state, so that the components in the circuit are not burned out due to the large current, and the safety and reliability of the circuit are further enhanced. It should be noted that in the present embodiment, the third diode D3 has a model number L-1822. Of course, in practical applications, the third diode D3 may also be another type of diode with the same function.
In a word, in this embodiment, compared with the power supply part of the conventional power monitoring system, the power supply module 6 uses fewer components, has a simpler circuit structure, is convenient to maintain, and can reduce the hardware cost due to the fact that some components are saved. In addition, the power supply module 6 is provided with a current limiting resistor, so that the safety and the reliability of the circuit are high.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims (9)

1. A feed electric quantity monitoring system is characterized by comprising a single chip microcomputer, an electric quantity sensor module, a wireless communication module, a display module, a clock module and a power supply module, wherein the single chip microcomputer is respectively connected with the electric quantity sensor module, the wireless communication module, the display module, the clock module and the power supply module;
the power supply module comprises a first resistor, a fifth resistor, a first triode, a second resistor, a second triode, a first capacitor, a voltage input end, a transformer, a first diode, a voltage output end, a third triode, a third resistor, a fourth triode, a fourth resistor and a second capacitor, one end of the first resistor is connected with one end of the fifth resistor, the other end of the fifth resistor is connected with a base electrode of the first triode, the voltage input end is connected with one end of a primary coil of the transformer, the other end of the primary coil of the transformer is connected with a collector electrode of the third triode, one end of a secondary coil of the transformer is connected with an anode of the first diode, and a cathode of the first diode is respectively connected with the voltage output end, the other end of the first resistor, the collector electrode of the first triode, The base of the third triode, the collector of the second triode, one end of the second resistor, the base of the fourth triode, one end of the fourth resistor and one end of the second capacitor are connected, the emitter of the first triode is respectively connected with the other end of the second resistor, the base of the second triode, one end of the first capacitor, the collector of the fourth triode and one end of the fourth resistor, the emitter of the second triode is grounded, the emitter of the third triode is respectively connected with the other end of the first capacitor, the emitter of the fourth triode and one end of the third resistor, the other end of the third resistor is grounded, and the other end of the second capacitor is grounded.
2. The feed electric quantity monitoring system according to claim 1, wherein the resistance value of the fifth resistor is 36k Ω.
3. The system for monitoring feeding electric quantity according to claim 2, characterized in that the power supply module further comprises a second diode, an anode of the second diode is connected with one end of the second resistor, and a cathode of the second diode is connected with a base of the fourth triode.
4. The feed electric quantity monitoring system of claim 3, wherein the second diode is of type E-272.
5. The feed power monitoring system of claim 4, wherein the power supply module further comprises a third diode, an anode of the third diode is connected to the emitter of the first transistor, and a cathode of the third diode is connected to the base of the second transistor.
6. The feed electric quantity monitoring system of claim 5, wherein the model of the third diode is L-1822.
7. The system for monitoring feeding electric quantity according to any one of claims 1 to 6, characterized in that the first transistor, the second transistor and the third transistor are NPN transistors.
8. The system for monitoring the feeding electric quantity according to any one of claims 1 to 6, wherein the fourth transistor is a PNP transistor.
9. The system for monitoring feeding electric quantity according to any one of claims 1 to 6, wherein the wireless communication module is any one or a combination of any several of a 5G communication module, a 4G communication module, a Bluetooth module, a WiFi module, a GSM module, a CDMA2000 module, a WCDMA module, a TD-SCDMA module, a Zigbee module and a LoRa module.
CN201911295849.5A 2019-12-16 2019-12-16 Feed electric quantity monitoring system Pending CN111024993A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911295849.5A CN111024993A (en) 2019-12-16 2019-12-16 Feed electric quantity monitoring system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201911295849.5A CN111024993A (en) 2019-12-16 2019-12-16 Feed electric quantity monitoring system

Publications (1)

Publication Number Publication Date
CN111024993A true CN111024993A (en) 2020-04-17

Family

ID=70210939

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201911295849.5A Pending CN111024993A (en) 2019-12-16 2019-12-16 Feed electric quantity monitoring system

Country Status (1)

Country Link
CN (1) CN111024993A (en)

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