CN209896773U - Electric energy monitoring device - Google Patents
Electric energy monitoring device Download PDFInfo
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- CN209896773U CN209896773U CN201920631328.1U CN201920631328U CN209896773U CN 209896773 U CN209896773 U CN 209896773U CN 201920631328 U CN201920631328 U CN 201920631328U CN 209896773 U CN209896773 U CN 209896773U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/126—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wireless data transmission
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Abstract
The utility model discloses an electric energy monitoring device, a serial communication port, including voltage acquisition module, voltage acquisition module connects singlechip host system, and wireless communication module, LCD display module, coil drive module are connected respectively to singlechip host system, and direct current detection coil is connected to coil drive module, and direct current detection coil connects coil feedback acquisition module, and singlechip host system is connected to coil feedback acquisition module. The electric energy monitoring device of the utility model realizes the detection of AC/DC current through the coil driving circuit; the output of the main control chip is finely adjusted to realize the constancy of the coil driving current; current information in the circuit is collected in real time through the coil feedback collection circuit, the electric energy condition in the circuit is analyzed through the voltage collection circuit, and information is transmitted to an electric energy management system in a wireless communication mode so as to carry out timely control.
Description
Technical Field
The utility model relates to an electric energy monitoring device for carry out the electric energy control to distributing type consumer, belong to power equipment technical field.
Background
At present, devices for measuring electric energy of power taking points such as wall sockets, floor sockets, mobile sockets (power strips) and the like are hardly available in the market. The existing intelligent socket is simple in structure, the socket is controlled in a comprehensive wiring mode, the function is single, only a simple switching function is achieved, and related electric energy use information cannot be obtained. In addition, for a household or a building distributed field, when a plurality of data loops are required to be acquired, the wiring cost is increased and the construction difficulty is improved.
Disclosure of Invention
The to-be-solved technical problem of the utility model is: the problem of how to realize the detection to alternating current-direct current and the collection and the transmission of electric energy information is solved.
In order to solve the technical problem, the technical scheme of the utility model an electric energy monitoring device is provided, a serial communication port, including voltage acquisition module, voltage acquisition module connects singlechip host system, and wireless communication module, LCD display module, coil drive module are connected respectively to singlechip host system, and direct current detection coil is connected to coil drive module, and direct current detection coil connection coil feedback acquisition module, coil feedback acquisition module connect singlechip host system.
Preferably, the voltage acquisition module, the single-chip microcomputer main control module, the wireless communication module, the LCD display module, the coil driving module, the direct current and alternating current detection coil and the coil feedback acquisition module are all connected with the power module.
Preferably, the coil driving module includes a resistor R2, one end of the resistor R2 is connected to the inverting input terminal of the operational amplifier U1C, the non-inverting input terminal of the operational amplifier U1C is connected to one end of the resistor R32, the output terminal of the operational amplifier U1C is connected to one end of the resistor R3, a resistor R36 is connected in parallel to the inverting input terminal of the operational amplifier U1C and the output terminal of the operational amplifier U1C, the other end of the resistor R3 is connected to the inverting input terminal of the operational amplifier U1A and one end of the resistor R10, the non-inverting input terminal of the operational amplifier U1A is connected to one end of the resistor R5, the output terminal of the operational amplifier U1A is connected to one end of the resistor R4 and one end of the resistor R9, the other end of the resistor R4 is connected to the port No. 1 of the triode component Q1, the other end of the resistor R9 is connected to the port No. 1 of the triode component Q2, two ports are connected in series between the, no. 1 port of triode component Q1 and No. 2 port of triode component Q1 are parallelly connected and have a resistance R1, No. 1 port of triode component Q2 and No. 2 port of triode component Q2 are parallelly connected and have a resistance R6, the one end of resistance R8 and the one end of resistance R47 are connected respectively to the other end of resistance R10, the other end of resistance R47 and the nodal connection between two diodes, the one end of nodal connection coil J1 between two diodes, resistance R7 is connected to the other end of coil J1.
Preferably, the other end of the resistor R2 is connected with a DAC _ OUT end of the singlechip main control module, and the other end of the coil J1 is connected with an ADC _ REF end of the singlechip main control module.
Preferably, the triode component Q1 includes a first NPN triode, a second NPN triode, and a first diode, wherein a collector of the first NPN triode is connected to a collector of the second NPN triode, an emitter of the first NPN triode is connected to a base of the second NPN triode, a collector of the second NPN triode is connected to a negative electrode of the first diode, and an emitter of the second NPN triode is connected to a positive electrode of the first diode; the base electrode of the first NPN triode is the port No. 1 of the triode component Q1, the collector electrode of the first NPN triode is the port No. 2 of the triode component Q1, and the emitter electrode of the second NPN triode is the port No. 3 of the triode component Q1; the triode component Q2 comprises a first PNP triode, a second PNP triode and a second diode, wherein the collector electrode of the first PNP triode is mutually connected with the collector electrode of the second PNP triode, the emitter electrode of the first PNP triode is connected with the base electrode of the second PNP triode, the collector electrode of the second PNP triode is connected with the anode of the second diode, and the emitter electrode of the second PNP triode is connected with the cathode of the second diode; the base of the first PNP triode is port No. 1 of the triode assembly Q2, the collector of the first PNP triode is port No. 2 of the triode assembly Q2, and the emitter of the second PNP triode is port No. 3 of the triode assembly Q2.
Preferably, the coil feedback acquisition module includes a coil J2, two ends of the coil J2 are respectively connected to one end of a resistor R19 and one end of a resistor R25, the other end of a resistor R19 is respectively connected to one end of a capacitor C6, one end of a capacitor C7, one end of a capacitor C8, and one end of a capacitor C9, the other end of a resistor R25 is respectively connected to one end of a capacitor C11, one end of a capacitor C12, the other end of a capacitor C8, and the other end of a capacitor C8, the other end of the capacitor C8 is respectively connected to a non-inverting input terminal of an operational amplifier U2 8 and one end of a resistor R8, the other end of the capacitor C8 is respectively connected to a non-inverting input terminal of the operational amplifier U2 8 and one end of the resistor R8, the inverting input terminal of the operational amplifier U2 8 is connected to one end of the resistor R8, the other end of the resistor R8 is connected to an inverting input terminal of the operational amplifier U2 8, and the inverting input terminal of the capacitor R8 are connected in parallel to the, the inverting input end and the output end of the operational amplifier U2A are connected in parallel with a capacitor C13 and a resistor R26, the output end of the operational amplifier U2B is connected with one end of a resistor R16, the output end of the operational amplifier U2A is connected with one end of a resistor R29, the other end of the resistor R16 is connected with one end of a capacitor C4 and one end of a resistor R21, the other end of the resistor R29 is connected with one end of a capacitor C14 and one end of a resistor R23, the other end of the resistor R21 is connected with one end of a resistor R18 and the non-inverting input end of an operational amplifier U2D, the other end of the resistor R23 is connected with the inverting input end of an operational amplifier U2D, the inverting input end and the output end of the operational amplifier U2D are connected in parallel with a resistor R28, the output end of the operational amplifier U2D is connected with one end.
Preferably, the other end of the resistor R28 is connected to the ADC _ FB1 end of the main control module of the single chip microcomputer.
Preferably, the single chip microcomputer main control module comprises an ADC _ FB1 terminal providing an input signal by the output of the coil feedback acquisition module, an ADC _ REF terminal providing an input signal by the output of the coil driving module, a SWITCH terminal for providing a SWITCH relay control signal, a DAC _ OUT terminal providing an output signal to the coil driving module, a ZERO _ CHK terminal inputting a signal for detecting an alternating current ZERO crossing, a VOL _ ADC1 terminal inputting a voltage acquisition signal, and a CUR _ ADC1 terminal inputting a current acquisition signal.
The electric energy monitoring device of the utility model realizes the detection of AC/DC current through the coil driving circuit; the output of the main control chip is finely adjusted to realize the constancy of the coil driving current; current information in the circuit is collected in real time through the coil feedback collection circuit, the electric energy condition in the circuit is analyzed through the voltage collection circuit, and information is transmitted to an electric energy management system in a wireless communication mode so as to carry out timely control.
Drawings
FIG. 1 is a control system topology diagram of an electrical energy monitoring device;
FIG. 2 is a schematic diagram of a main control module of the single chip microcomputer;
FIG. 3 is a schematic diagram of a wireless communication module;
FIG. 4 is a schematic diagram of a coil drive module;
fig. 5 is a schematic diagram of a coil feedback acquisition module.
Detailed Description
In order to make the present invention more comprehensible, preferred embodiments are described in detail below with reference to the accompanying drawings.
The utility model relates to an electric energy monitoring device, as shown in FIG. 1, it includes voltage acquisition module, and voltage acquisition module connects singlechip host system, and wireless communication module, LCD display module, coil drive module are connected respectively to singlechip host system, and direct current detection coil is connected to coil drive module, and direct current detection coil connects coil feedback acquisition module, and singlechip host system is connected to coil feedback acquisition module. The voltage acquisition module, the single-chip microcomputer main control module, the wireless communication module, the LCD display module, the coil driving module, the direct current and alternating current detection coil and the coil feedback acquisition module are all connected with the power supply module.
As shown in fig. 2, the main control module of the single chip is a processing and analyzing core of the electric energy monitoring device, and is configured to send a driving signal to a driving module (i.e., a coil driving module) of the ac/dc current detection coil, and adjust the output of the driving circuit in real time through the coil feedback acquisition module to maintain the driving current constant; analyzing and processing the electric energy information in the circuit through the acquired voltage signal and current signal, displaying the information on the LCD display module at the current stage, and transmitting the electric energy information to the upper-stage electric energy management; if the power consumption is large, a relay control signal is output, and the main circuit of the intelligent socket is cut off.
The single chip microcomputer main control module comprises an ADC _ FB1 end, an ADC _ REF end, a SWITCH end, a DAC _ OUT end, a ZERO _ CHK end, a VOL _ ADC1 end and a CUR _ ADC1 end, wherein the ADC _ FB1 end provides an input signal through the output of the coil feedback acquisition module, the ADC _ REF end provides an input signal through the output of the coil driving module, the SWITCH end is used for providing a SWITCH switching relay control signal, the DAC _ OUT end provides an output signal to the coil driving module, the ZERO _ CHK end serves as signal input of alternating current ZERO crossing detection, the VOL _ ADC1 end serves as voltage.
The power module gets electricity from the socket module, and then converts the electricity into 3.3V, 15V and other voltages, and provides working power supply for each module.
The voltage acquisition module acquires voltage signals through the voltage acquisition device, and can adopt a divider resistor, a voltage sensor or a voltage sampling chip and the like to sample.
The coil driving module is controlled by the main control chip and is used for driving the alternating current and direct current detection coils so as to realize direct current detection, and thus, the detection of alternating current and direct current is realized on one coil.
The ac/dc current detection coil is a sensor for detecting current, and can detect ac current and dc current.
The coil feedback acquisition module acquires the driving current on the AC/DC current detection coil and the current signal required to be acquired by the main circuit.
As shown in fig. 4, the coil driving module includes a resistor R2, one end of the resistor R2 is connected to the inverting input terminal of the operational amplifier U1C, the non-inverting input terminal of the operational amplifier U1C is connected to one end of the resistor R32, the output terminal of the operational amplifier U1C is connected to one end of the resistor R3, a resistor R36 is connected in parallel to the inverting input terminal of the operational amplifier U1C and the output terminal of the operational amplifier U1C, the other end of the resistor R3 is connected to the inverting input terminal of the operational amplifier U1A and one end of the resistor R10, the non-inverting input terminal of the operational amplifier U1A is connected to one end of the resistor R5, the output terminal of the operational amplifier U1A is connected to one end of the resistor R4 and one end of the resistor R9, the other end of the resistor R4 is connected to the port No. 1 of the triode component Q1, the other end of the resistor R9 is connected to the port No. 1 of the triode component Q2, two ports are, no. 1 port of triode component Q1 and No. 2 port of triode component Q1 are parallelly connected and have a resistance R1, No. 1 port of triode component Q2 and No. 2 port of triode component Q2 are parallelly connected and have a resistance R6, the one end of resistance R8 and the one end of resistance R47 are connected respectively to the other end of resistance R10, the other end of resistance R47 and the nodal connection between two diodes, the one end of nodal connection coil J1 between two diodes, resistance R7 is connected to the other end of coil J1.
The other end of the resistor R2 is connected with the DAC _ OUT end of the singlechip main control module, and the other end of the coil J1 is connected with the ADC _ REF end of the singlechip main control module.
The triode component Q1 comprises a first NPN triode, a second NPN triode and a first diode, wherein the collector of the first NPN triode is connected with the collector of the second NPN triode, the emitter of the first NPN triode is connected with the base of the second NPN triode, the collector of the second NPN triode is connected with the negative electrode of the first diode, and the emitter of the second NPN triode is connected with the positive electrode of the first diode; the base electrode of the first NPN triode is the port No. 1 of the triode component Q1, the collector electrode of the first NPN triode is the port No. 2 of the triode component Q1, and the emitter electrode of the second NPN triode is the port No. 3 of the triode component Q1; the triode component Q2 comprises a first PNP triode, a second PNP triode and a second diode, wherein the collector electrode of the first PNP triode is mutually connected with the collector electrode of the second PNP triode, the emitter electrode of the first PNP triode is connected with the base electrode of the second PNP triode, the collector electrode of the second PNP triode is connected with the anode of the second diode, and the emitter electrode of the second PNP triode is connected with the cathode of the second diode; the base of the first PNP triode is port No. 1 of the triode assembly Q2, the collector of the first PNP triode is port No. 2 of the triode assembly Q2, and the emitter of the second PNP triode is port No. 3 of the triode assembly Q2.
The first NPN triode and the second NPN triode form an NPN Darlington tube, the first PNP triode and the second PNP triode form a PNP Darlington tube, and the Darlington tube is of a double-tube structure. When the Darlington tube is used, the base electrode, the collector electrode and the emitter electrode of the Darlington tube are consistent with those of a common triode.
Therefore, the port 1 of the triode component Q1 is the base of the NPN darlington transistor, the port 2 is the collector of the NPN darlington transistor, and the port 3 is the emitter of the NPN darlington transistor.
The No. 1 port of the triode component Q2 is the base electrode of the PNP type Darlington tube, the No. 2 port is the collector electrode of the PNP type Darlington tube, and the No. 3 port is the emitting electrode of the PNP type Darlington tube.
As shown in fig. 5, the coil feedback acquisition module includes a coil J2, two ends of the coil J2 are respectively connected to one end of a resistor R19 and one end of a resistor R25, the other end of a resistor R19 is respectively connected to one end of a capacitor C6, one end of a capacitor C7, one end of a capacitor C8, and one end of a capacitor C9, the other end of a resistor R25 is respectively connected to one end of a capacitor C11, one end of a capacitor C12, the other end of a capacitor C8, and the other end of a capacitor C8, the other end of the capacitor C8 is respectively connected to a non-inverting input end of an operational amplifier U2 8 and one end of a resistor R8, the other end of the capacitor C8 is respectively connected to a non-inverting input end of the operational amplifier U2 8 and one end of a resistor R8, the inverting input end of the operational amplifier U2 8 is connected to one end of the resistor R8, the other end of the resistor R8 is connected to an inverting input end of the operational amplifier U2 8, the inverting input end of the operational amplifier U2 is connected, the inverting input end and the output end of the operational amplifier U2A are connected in parallel with a capacitor C13 and a resistor R26, the output end of the operational amplifier U2B is connected with one end of a resistor R16, the output end of the operational amplifier U2A is connected with one end of a resistor R29, the other end of the resistor R16 is connected with one end of a capacitor C4 and one end of a resistor R21, the other end of the resistor R29 is connected with one end of a capacitor C14 and one end of a resistor R23, the other end of the resistor R21 is connected with one end of a resistor R18 and the non-inverting input end of an operational amplifier U2D, the other end of the resistor R23 is connected with the inverting input end of an operational amplifier U2D, the inverting input end and the output end of the operational amplifier U2D are connected in parallel with a resistor R28, the output end of the operational amplifier U2D is connected with one end.
The other end of the resistor R28 is connected with the ADC _ FB1 end of the singlechip main control module.
The utility model discloses an electric energy monitoring device working method does: after the power module gets electricity from the main loop, the electric energy monitoring device starts to work.
The working mode of the coil driving module is as follows:
the DAC _ OUT end of the main control chip of the single chip microcomputer generates DA serving as a signal to be input to the reverse input end of the operational amplifier U1C, and the DA is amplified by the operational amplifier U1C to generate a positive signal and a negative signal. The positive and negative signals are amplified in equal proportion after passing through a resistor R3, a resistor R10, a resistor R8 and a resistor R47, and a constant voltage is generated between a pin 2 of the coil J1 and a grounding end; the driving current of the coil J1 is generated by the transistor Q1 and the transistor Q2 driven by the operational amplifier U1A. ADC _ REF is a voltage feedback signal after current flows through a resistor R7, and after the signal is sampled by the single chip microcomputer, DAC _ OUT output is automatically adjusted, so that voltage of a pin No. 2 of a coil J1 is adjusted, and bidirectional constant current output control is formed.
It should be further noted that the DA signal is a square wave signal, and the output range is determined according to the amplification ratio of the operational amplifier, mainly making the positive signal of the DA become a positive signal and a negative signal after amplification. The amplified signal can drive the transistor component Q1 and the transistor component Q2 to meet the current required by the driving coil J1. Meanwhile, according to the change of the impedance of the coil J1, the magnitude of a feedback signal on the resistor R7 needs to be acquired to finely adjust the DA output signal, so as to ensure that the driving current on the coil J1 keeps a constant value.
The working mode of the coil feedback acquisition module is as follows:
j2 is the feedback input end of the coil, after being filtered by a resistor R19, a resistor R25, a capacitor C6, a capacitor C7, a capacitor C8, a capacitor C9, a capacitor C11 and a capacitor C12, the signals are amplified by a differential amplifying circuit consisting of an operational amplifier U2A and an operational amplifier U2B, and finally a differential signal conversion circuit consisting of an operational amplifier U2D. The coil feedback acquisition module acquires induction signals generated by a feedback coil of the transformer, wherein the induction signals comprise coil driving current and mixed induction signals of target measurement current passing through the transformer. The target measurement current is referred to as a current signal of the main loop.
The input signal ADC _ FB1 of the main control chip is provided by the output of the coil feedback acquisition module and is used for acquiring a current signal of the main loop; the input signal ADC _ REF is provided by the output of the coil driving module, and is adjusted through a feedback signal to ensure that the driving current of the coil is constant.
The SWITCH signal is a SWITCH switching relay control signal and is used for sending a signal to cut off a main loop of the socket when the current of the main loop exceeds rated current.
The output signal DAC _ OUT is provided for the coil driving module as a module input to serve as a driving signal; the ZERO _ CHK signal is the signal input of the alternating current ZERO crossing detection; the VOL _ ADC1 signal is a voltage acquisition signal input for acquiring a voltage signal of the main loop; the CUR ADC1 signal is a current acquisition signal input.
As shown in fig. 3, the utility model discloses an electric energy monitoring device can also use wireless communication modes such as wiFi, Zigbee or bluetooth except using the radio frequency mode to send for data receiving gateway after the electric energy signal who gathers converts digital signal into. The control module (namely the singlechip main control module) judges whether the power consumption is overlarge or not according to the set rated current. The alarm can be prompted by the LCD display module, and the socket switch can be controlled by the relay module after the alarm.
Claims (8)
1. The utility model provides an electric energy monitoring device, its characterized in that includes voltage acquisition module, and voltage acquisition module connects singlechip main control module, and wireless communication module, LCD display module, coil drive module are connected respectively to singlechip main control module, and direct alternating current detection coil is connected to coil drive module, and direct alternating current detection coil connects coil feedback acquisition module, and singlechip main control module is connected to coil feedback acquisition module.
2. The electric energy monitoring device according to claim 1, wherein the voltage acquisition module, the single chip microcomputer main control module, the wireless communication module, the LCD display module, the coil driving module, the direct current and alternating current detection coil and the coil feedback acquisition module are all connected with the power supply module.
3. The power monitoring device as claimed in claim 1, wherein the coil driving module comprises a resistor R2, one end of the resistor R2 is connected to the inverting input terminal of the operational amplifier U1C, the non-inverting input terminal of the operational amplifier U1C is connected to one end of the resistor R32, the output terminal of the operational amplifier U1C is connected to one end of the resistor R3, the inverting input terminal of the operational amplifier U1C and the output terminal of the operational amplifier U1C are connected in parallel by a resistor R36, the other end of the resistor R3 is connected to the inverting input terminal of the operational amplifier U1A and one end of the resistor R10, the non-inverting input terminal of the operational amplifier U1A is connected to one end of the resistor R5, the output terminal of the operational amplifier U1A is connected to one end of the resistor R4 and one end of the resistor R9, the other end of the resistor R4 is connected to the No. 1 port of the triode block Q1, the other end of the resistor R9 is connected to, two diodes are connected in series between the port 3 of the triode component Q1 and the port 3 of the triode component Q2, a resistor R1 is connected in parallel between the port 1 of the triode component Q1 and the port 2 of the triode component Q1, a resistor R6 is connected in parallel between the port 1 of the triode component Q2 and the port 2 of the triode component Q2, one end of a resistor R8 and one end of a resistor R47 are respectively connected to the other end of the resistor R10, the other end of the resistor R47 is connected with a node between the two diodes, one end of a coil J1 is connected to the node between the two diodes, and the other end of the coil J1 is connected with the resistor R7.
4. The electric energy monitoring device as claimed in claim 3, wherein the other end of the resistor R2 is connected to the DAC _ OUT terminal of the MCU master control module, and the other end of the coil J1 is connected to the ADC _ REF terminal of the MCU master control module.
5. An electric energy monitoring device as claimed in claim 3, wherein the transistor component Q1 comprises a first NPN transistor, a second NPN transistor and a first diode, a collector of the first NPN transistor is connected to a collector of the second NPN transistor, an emitter of the first NPN transistor is connected to a base of the second NPN transistor, a collector of the second NPN transistor is connected to a negative electrode of the first diode, and an emitter of the second NPN transistor is connected to a positive electrode of the first diode; the base electrode of the first NPN triode is the port No. 1 of the triode component Q1, the collector electrode of the first NPN triode is the port No. 2 of the triode component Q1, and the emitter electrode of the second NPN triode is the port No. 3 of the triode component Q1; the triode component Q2 comprises a first PNP triode, a second PNP triode and a second diode, wherein the collector electrode of the first PNP triode is mutually connected with the collector electrode of the second PNP triode, the emitter electrode of the first PNP triode is connected with the base electrode of the second PNP triode, the collector electrode of the second PNP triode is connected with the anode of the second diode, and the emitter electrode of the second PNP triode is connected with the cathode of the second diode; the base of the first PNP triode is port No. 1 of the triode assembly Q2, the collector of the first PNP triode is port No. 2 of the triode assembly Q2, and the emitter of the second PNP triode is port No. 3 of the triode assembly Q2.
6. The electric energy monitoring device according to claim 1, wherein the coil feedback acquisition module comprises a coil J2, two ends of the coil J2 are respectively connected with one end of a resistor R19 and one end of a resistor R25, the other end of the resistor R19 is respectively connected with one end of a capacitor C6, one end of a capacitor C7, one end of a capacitor C8 and one end of a capacitor C9, the other end of the resistor R25 is respectively connected with one end of a capacitor C11, one end of a capacitor C12, the other end of a capacitor C8 and the other end of a capacitor C9, the other end of a capacitor C7 is respectively connected with a non-inverting input end of an operational amplifier U2B and one end of a resistor R17, the other end of the capacitor C12 is respectively connected with a non-inverting input end of an operational amplifier U2A and one end of a resistor R27, the other end of a resistor R17 is connected with the other end of a resistor R27, an inverting input end of the operational amplifier U2 27 is connected with an inverting input end of the operational amplifier U27, an inverting input end and an output end of an operational amplifier U2B are connected with a capacitor C5 and a resistor R20 in parallel, an inverting input end and an output end of an operational amplifier U2A are connected with a capacitor C13 and a resistor R26 in parallel, an output end of the operational amplifier U2B is connected with one end of a resistor R16, an output end of the operational amplifier U2A is connected with one end of a resistor R29, the other end of a resistor R16 is connected with one end of a capacitor C4 and one end of a resistor R21 respectively, the other end of a resistor R29 is connected with one end of a capacitor C14 and one end of a resistor R23 respectively, the other end of a resistor R21 is connected with one end of a resistor R18 and a non-inverting input end of an operational amplifier U2D respectively, the other end of the resistor R D is connected with an inverting input end of the operational amplifier U2D, the inverting input end and the output end of the operational amplifier U2D are connected with one end of the capacitor C D in parallel.
7. The electric energy monitoring device as claimed in claim 6, wherein the other end of the resistor R28 is connected to the ADC _ FB1 of the MCU main control module.
8. The power monitoring device as claimed in claim 1, wherein the single chip microcomputer main control module comprises an ADC _ FB1 terminal for providing an input signal from the output of the coil feedback collection module, an ADC _ REF terminal for providing an input signal from the output of the coil driving module, an SWITCH terminal for providing a SWITCH relay control signal, a DAC _ OUT terminal for providing an output signal to the coil driving module, a ZERO _ CHK terminal for providing an ac ZERO crossing detection signal input, a VOL _ ADC1 terminal for providing a voltage collection signal input, and a CUR _ ADC1 terminal for providing a current collection signal input.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920631328.1U CN209896773U (en) | 2019-05-05 | 2019-05-05 | Electric energy monitoring device |
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| CN201920631328.1U CN209896773U (en) | 2019-05-05 | 2019-05-05 | Electric energy monitoring device |
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| CN209896773U true CN209896773U (en) | 2020-01-03 |
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| CN112821345A (en) * | 2021-01-25 | 2021-05-18 | 上海电器科学研究所（集团）有限公司 | Control device and control method for voltage fault protection |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112821345A (en) * | 2021-01-25 | 2021-05-18 | 上海电器科学研究所（集团）有限公司 | Control device and control method for voltage fault protection |
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