CN217879605U - Battery power consumption detection circuit and device of electric energy meter - Google Patents
Battery power consumption detection circuit and device of electric energy meter Download PDFInfo
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- CN217879605U CN217879605U CN202221515403.6U CN202221515403U CN217879605U CN 217879605 U CN217879605 U CN 217879605U CN 202221515403 U CN202221515403 U CN 202221515403U CN 217879605 U CN217879605 U CN 217879605U
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Abstract
The utility model provides a battery power consumption detection circuit and a device of an electric energy meter, which relate to the technical field of instrument detection, wherein the circuit comprises a power conversion module, a current detection module, an analog-to-digital conversion module, a control module and a display module; the power supply conversion module is respectively connected with the power supply and the electric energy meter, converts the output voltage of the power supply into a power supply voltage and inputs power supply current for the electric energy meter; the current detection module is connected with the electric energy meter, detects the power supply current input into the electric energy meter and generates a detection signal; the analog-to-digital conversion module is connected with the current detection module and converts the detection signal into a digital signal; the control module is connected with the analog-to-digital conversion module and generates a display signal according to the digital signal; and the display module is connected with the control module and displays the current value of the power supply current according to the display signal. The utility model provides an artifical measurement electric energy meter battery consumption, the great technical problem of measuring error has improved the accuracy that electric energy meter battery consumption detected.
Description
Technical Field
The utility model relates to an instrument and meter detects technical field, in particular to electric energy meter battery consumption detection circuitry and device.
Background
With the rapid development of smart grids in China, the popularization area of the smart grids is rapidly increasing. Various problems gradually appear in the intelligent electric energy meter installed on the site at present.
In the related art, a common multimeter or a pointer type ammeter is usually connected in series to an electric energy meter manually to measure the battery power consumption of the intelligent electric energy meter so as to judge whether the intelligent electric energy meter has a fault; however, manual measurement generally results in large measurement errors.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a main aim at: the utility model provides an electric energy meter battery consumption detection circuitry and device, aim at solving artifical measurement electric energy meter battery consumption, the great technical problem of measurement error.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
in a first aspect, the utility model provides a battery power consumption detection circuit of an electric energy meter, the circuit comprises a power conversion module, a current detection module, an analog-to-digital conversion module, a control module and a display module;
the power supply conversion module is respectively connected with the power supply and the electric energy meter and is used for converting the output voltage of the power supply into a power supply voltage and inputting power supply current for the electric energy meter;
the current detection module is connected with the electric energy meter and used for detecting the power supply current input into the electric energy meter and generating a detection signal;
the analog-to-digital conversion module is connected with the current detection module and is used for converting the detection signal into a digital signal;
the control module is connected with the analog-to-digital conversion module and used for generating a display signal according to the digital signal;
and the display module is connected with the control module and used for displaying the current value of the power supply current according to the display signal.
Optionally, the circuit further comprises a power supply interface module;
and the power supply interface module is respectively connected with the power supply conversion module, the electric energy meter and the current detection module and is used for inputting power supply current into the electric energy meter and outputting the power supply current to the current detection module.
Optionally, the circuit further comprises a reset module;
the reset module is used for outputting a reset signal;
and the control module is connected with the reset module and is also used for controlling the reset of the display module according to the reset signal.
Optionally, the reset module includes a manual reset unit and a power-on reset unit;
the manual reset unit is respectively connected with the power supply and the control module and used for outputting a reset signal according to manual reset operation;
and the power-on reset unit is respectively connected with the power supply and the control module and is used for automatically outputting a reset signal when the power consumption detection circuit of the electric energy meter is powered on.
Optionally, the circuit further comprises a signal amplification module;
the signal amplification module is connected with the current detection module and used for amplifying the detection signal to obtain an amplified detection signal;
and the analog-to-digital conversion module is connected with the signal amplification module and is also used for converting the amplified detection signal into a digital signal.
Optionally, the current detection module comprises a current sensor U3;
the first pin of the current sensor U3 is connected with the power supply interface module, the third pin of the current sensor U3 is grounded, the eighth pin of the current sensor U3 is connected with the power supply, the fifth pin of the current sensor U3 is grounded, and the seventh pin of the current sensor U3 is connected with the signal amplification module.
Optionally, the signal amplification module includes an operational amplifier U5;
the second pin of the operational amplifier U5 is connected with the seventh pin of the current sensor U3 and is grounded, the third pin of the operational amplifier U5 is connected with the power supply through a resistor R6 and is grounded through a resistor R7, the fourth pin of the operational amplifier U5 is grounded, the eighth pin of the operational amplifier U5 is connected with the power supply, and the first pin of the operational amplifier U5 is connected with the analog-to-digital conversion module and is grounded through a resistor R9 and a capacitor C10 which are connected in parallel.
Optionally, the analog-to-digital conversion module includes an analog-to-digital converter U2;
the first pin of the analog-to-digital converter U2 is connected with the first pin of the operational amplifier U5, the fifteenth pin, the sixteenth pin, the seventeenth pin, the eighteenth pin and the nineteenth pin of the analog-to-digital converter U2 are connected with the control module, the fourteenth pin and the twentieth pin of the analog-to-digital converter U2 are connected with the power supply, the fourteenth pin of the analog-to-digital converter U2 is grounded through a capacitor C12, the twentieth pin of the analog-to-digital converter U2 is grounded through a capacitor C11, and the tenth pin and the thirteenth pin of the analog-to-digital converter U2 are grounded.
Optionally, the control module comprises a microcontroller U1;
an eighteenth pin of the microcontroller U1 is connected to one end of the crystal oscillator Y1 and one end of the capacitor C13, a nineteenth pin of the microcontroller U1 is connected to the other end of the crystal oscillator Y1 and one end of the capacitor C14, the twentieth pin of the microcontroller U1, the other end of the capacitor C13 and the other end of the capacitor C14 are all grounded, a thirty-first pin, a twenty-second pin, a twenty-third pin, a twenty-fourth pin and a twenty-fifth pin of the microcontroller U1 are all connected to the power supply, a twenty-first pin, a twenty-second pin, a twenty-third pin, a twenty-fourth pin and a twenty-fifth pin of the microcontroller U1 are correspondingly connected to a fifteenth pin, a sixteenth pin, a seventeenth pin, an eighteenth pin and a nineteenth pin of the analog-to digital converter U2, and a twenty-sixth pin, a twenty-seventh pin, a twenty-eighth pin, a thirty-second pin, a thirty-third pin, a thirty-fourth pin, a thirty-fifth pin, a thirty-sixth pin, a seventh pin, a thirty-eighth pin and a thirty-ninth pin of the microcontroller U1 are all connected to the display module.
In a second aspect, the utility model provides an electric energy meter battery consumption detection device, the device includes:
the power consumption detection circuit of the electric energy meter battery is used for detecting the power consumption of the electric energy meter battery;
and the power supply is used for supplying power to each module in the electric energy meter battery power consumption detection circuit.
The utility model provides an electric energy meter battery consumption detection circuitry and device, through the supply current of current detection module detection input electric energy meter, generate the detected signal, through analog-to-digital conversion module with detected signal conversion for digital signal, generate the display signal according to digital signal through control module, the control display module shows the supply current's of input electric energy meter current value, the lug connection electric energy meter during the use, just can the consumption of real-time detection electric energy meter battery, need not manual operation universal meter or current meter, the manual measurement electric energy meter battery consumption has been solved, the great technical problem of measuring error, the accuracy of electric energy meter battery consumption detection has been improved.
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 structures shown in the drawings without creative efforts.
Fig. 1 is a schematic connection diagram of a first embodiment of a battery power consumption detection circuit of an electric energy meter according to the present invention;
fig. 2 is a schematic circuit diagram of an embodiment of the battery power consumption detection circuit of the electric energy meter of the present invention;
fig. 3 is a front view of the device for detecting battery power consumption of an electric energy meter of the present invention;
fig. 4 is a rear view of the battery power consumption detecting device of the electric energy meter.
The realization, the functional characteristics and the advantages of the utility model are further explained by combining the embodiment and referring to the attached drawings.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without making creative efforts belong to the protection scope of the present invention.
It should be noted that, in the present invention, the terms "comprises", "comprising" or any other variation thereof are intended to cover a non-exclusive inclusion, so that a device or system including a series of elements includes not only those elements but also other elements not explicitly listed or inherent to such a device or system. Without further limitation, an element defined by the phrases "comprising 8230; \8230;" 8230; "does not exclude the presence of additional like elements in a device or system that comprises the element.
In addition, in the present invention, unless expressly stated or limited otherwise, the terms "connected" and "fixed" are to be construed broadly, e.g., "connected" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the present invention, suffixes such as "module", "part", or "unit" used to denote elements are used only for facilitating the description of the present invention, and have no specific meaning by themselves. Thus, "module", "component" or "unit" may be used mixedly. The specific meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art. In addition, the technical solutions of the respective embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory to each other or cannot be realized, the combination of the technical solutions should be considered to be absent, and is not within the protection scope of the present invention.
With the rapid development of smart grids in China, the popularization area of smart grids is rapidly increasing. Various problems are gradually revealed in the current intelligent electric energy meter installed on the site, wherein the battery failure is an important cause of damage to the intelligent electric energy meter. At present, an internal power supply of the intelligent electric energy meter mainly comprises a lithium battery, and when the battery is rapidly discharged to a no-electric quantity state or the voltage is low, the battery is characterized in that the consumption current of the intelligent electric energy meter is too large under a power failure state, so that the battery rapidly consumes electric quantity, and the service life of the battery is influenced. When the battery fault occurs, the accuracy of an internal clock of the intelligent electric energy meter or the normal operation of a clock module can be influenced, and once the fault occurs due to time error, the faults such as rate switching error, load recording or timing electric quantity freezing can be caused, so that the related problems of the normal metering of the electric energy meter are influenced.
In the prior art, in the related technology, a common multimeter or a pointer type current meter is usually adopted, and a manual welding patch cord is used for measuring the power consumption of a battery of the intelligent electric energy meter so as to judge whether the intelligent electric energy meter has a fault or not; however, human wiring factors and complicated wiring are inconvenient to use and may cause short-circuiting of lines, resulting in a large measurement error.
In view of the artifical electric energy meter battery consumption that measures, the great technical problem of measuring error, the utility model provides an electric energy meter battery consumption detection circuitry and device, the general thinking is as follows:
the circuit comprises a power supply conversion module, a current detection module, an analog-to-digital conversion module, a control module and a display module; the power supply conversion module is respectively connected with the power supply and the electric energy meter and is used for converting the output voltage of the power supply into a power supply voltage and inputting power supply current for the electric energy meter; the current detection module is connected with the electric energy meter and used for detecting the power supply current input into the electric energy meter and generating a detection signal; the analog-to-digital conversion module is connected with the current detection module and used for converting the detection signal into a digital signal; the control module is connected with the analog-to-digital conversion module and used for generating a display signal according to the digital signal; and the display module is connected with the control module and used for displaying the current value of the power supply current according to the display signal.
The utility model provides an electric energy meter battery consumption detection circuitry and device, through the supply current of current detection module detection input electric energy meter, generate the detected signal, through analog-to-digital conversion module with detected signal conversion for digital signal, generate the display signal according to digital signal through control module, the control display module shows the supply current's of input electric energy meter current value, the lug connection electric energy meter during the use, just can the consumption of real-time detection electric energy meter battery, need not manual operation universal meter or current meter, the manual measurement electric energy meter battery consumption has been solved, the great technical problem of measuring error, the accuracy of electric energy meter battery consumption detection has been improved.
The power consumption detection circuit and the power consumption detection device of the present invention will be described in detail with reference to the accompanying drawings and the detailed description.
Example one
Referring to fig. 1 to 2, fig. 1 is a schematic connection diagram of a first embodiment of a battery power consumption detection circuit of an electric energy meter of the present invention, and fig. 2 is a schematic circuit diagram of an embodiment of the battery power consumption detection circuit of the present invention, this embodiment provides an electric energy meter battery power consumption detection circuit, and the circuit includes a power conversion module, a current detection module, an analog-to-digital conversion module, a control module and a display module;
the power supply conversion module is respectively connected with the power supply and the electric energy meter and is used for converting the output voltage of the power supply into a power supply voltage and inputting power supply current for the electric energy meter;
the current detection module is connected with the electric energy meter and used for detecting the power supply current input into the electric energy meter and generating a detection signal;
the analog-to-digital conversion module is connected with the current detection module and is used for converting the detection signal into a digital signal;
the control module is connected with the analog-to-digital conversion module and used for generating a display signal according to the digital signal;
and the display module is connected with the control module and used for displaying the current value of the power supply current according to the display signal.
In this embodiment, the display range of the display module may be set according to the model of the electric energy meter actually detected, and when the electric energy meter normally works, the display module normally displays the current value of the supply current of the electric energy meter; when the ammeter has a fault, the current value of the power supply current detected by the current detection module exceeds the display range of the display module, and the display module cannot display the current value of the power supply current of the ammeter.
The power supply can be a storage battery, and can output a voltage VCC to supply power to each module in the battery power consumption detection circuit of the electric energy meter, as shown in fig. 2, the power supply conversion module includes a low dropout regulator U4, a third pin 3 of the low dropout regulator U4 is respectively connected with the power supply, one end of a capacitor C1 and one end of a capacitor C2, a first pin 1 of the low dropout regulator U4 is respectively connected with one end of a capacitor C3, one end of a capacitor C4 and the electric energy meter, a second pin 2 of the low dropout regulator U4, the other end of the capacitor C1, the other end of the capacitor C2, the other end of the capacitor C3 and the other end of the capacitor C4 are all grounded, and are used for converting the output voltage VCC of the storage battery into a supply voltage of the electric energy meter to supply power to the electric energy meter, the supply voltage of the electric energy meter is determined according to the model of the actual electric energy meter, and the supply voltage output by the power supply conversion module in this embodiment is 3.6V.
In specific implementation, the low dropout regulator U4 converts the output voltage VCC of the storage battery into a 3.6V supply voltage, supplies power to the electric energy meter, inputs a supply current to the electric energy meter, detects the supply current input to the electric energy meter through the current detection module, outputs a detection signal, converts the detection signal into a digital signal through the analog-to-digital conversion module, generates a display signal according to the digital signal through the control module, and displays the current value of the supply current according to the display signal through the display module when the electric energy meter normally works; when the electric energy meter breaks down, the display module displays abnormity to remind the electric energy meter of breaking down.
Specifically, as shown in fig. 2, the circuit further includes a power supply interface module;
and the power supply interface module is respectively connected with the power supply conversion module, the electric energy meter and the current detection module and is used for inputting power supply current into the electric energy meter and outputting the power supply current to the current detection module.
In this embodiment, the power supply interface module includes power supply interface J2, and first pin 1 of power supply interface J2 is connected with first pin 1 of low dropout regulator U4 for input 3.6V supply voltage to the electric energy meter, for the electric energy meter input supply current, power supply interface J2's second pin 2 is connected with the current detection module, is used for exporting the supply current of input electric energy meter to the current detection module.
In specific implementation, the battery power consumption detection circuit of the electric energy meter is connected with the electric energy meter through the power supply interface J2, 3.6V power supply voltage is input into the electric energy meter, power supply current is input into the electric energy meter, and the power supply current of the electric energy meter is output to the current detection module.
The embodiment provides a battery power consumption detection circuit of an electric energy meter, which converts the output voltage of a power supply into a power supply voltage through a power supply conversion module, connects the battery power consumption detection circuit of the electric energy meter with the electric energy meter through a power supply interface, inputs a power supply current for the electric energy meter and realizes the power supply function of the electric energy meter; when the device is used, the device is directly connected with the electric energy meter, so that the power consumption of the battery of the electric energy meter can be detected in real time, a universal meter or a current meter does not need to be manually operated, the technical problems of manual measurement of the power consumption of the battery of the electric energy meter and large measurement error are solved, and the accuracy of the power consumption detection of the battery of the electric energy meter is improved; complicated detection circuits do not need to be welded manually in the electric energy meter, and the technical problem that the circuits are short-circuited possibly due to manual wiring is solved; the power supply interface module is directly connected with the electric energy meter, so that the convenience of battery power consumption detection of the electric energy meter is improved.
Specifically, the circuit further comprises a reset module;
the reset module is used for outputting a reset signal;
and the control module is connected with the reset module and is also used for controlling the display module to reset according to the reset signal.
Specifically, the reset module comprises a manual reset unit and a power-on reset unit;
the manual reset unit is respectively connected with the power supply and the control module and used for outputting a reset signal according to manual reset operation;
and the power-on reset unit is respectively connected with the power supply and the control module and is used for automatically outputting a reset signal when the power consumption detection circuit of the electric energy meter is powered on.
In this embodiment, as shown in fig. 2, the manual reset unit includes a key switch S1, one end 1 of the key switch S1 is connected to one end of a resistor R15 and connected to the control module, and the other end 2 is connected to the power supply; the power-on reset unit comprises a capacitor E1, the anode of the capacitor E1 is connected with a power supply, the cathode of the capacitor E1 is connected with the control module and is connected with one end of a resistor R15, and the other end of the resistor R15 is grounded. The manual reset operation may be an operation of pressing the key switch S1 according to actual requirements, for example, the operation of pressing the key switch S1 after the fault of the electric energy meter is recovered to normal.
In the specific implementation, the output voltage VCC of the power supply is connected to the control module through the key switch S1 according to the manual reset operation, the control module outputs a reset signal according to the output voltage VCC to control the reset of the display module, and the manual reset function of the battery power consumption detection circuit of the electric energy meter is realized; when the power supply is powered on, the output voltage VCC of the power supply is connected to the control module through the capacitor E1, the control module outputs a reset signal according to the output voltage VCC to control the reset of the display module, and the power-on reset function of the battery power consumption detection circuit of the electric energy meter is realized.
The embodiment provides a battery power consumption detection circuit of an electric energy meter, which realizes a manual reset function of the battery power consumption detection circuit of the electric energy meter through a key switch, realizes a power-on reset function of the battery power consumption detection circuit of the electric energy meter through a capacitor E1, provides two reset modes, and improves the applicability of the battery power consumption detection of the electric energy meter.
Specifically, as shown in fig. 2, the circuit further includes a signal amplification module;
the signal amplification module is connected with the current detection module and used for amplifying the detection signal to obtain an amplified detection signal;
and the analog-to-digital conversion module is connected with the signal amplification module and is also used for converting the amplified detection signal into a digital signal.
In the specific implementation, the current detection module is used for detecting the supply current input into the electric energy meter and outputting a detection signal, the signal amplification module is used for amplifying the detection signal to obtain an amplified detection signal, the analog-to-digital conversion module is used for converting the amplified detection signal into a digital signal, the control module is used for generating a display signal according to the digital signal, and when the electric energy meter works normally, the display module is used for displaying the current value of the supply current according to the display signal; when the electric energy meter is in fault, the display module displays an alarm signal according to the display signal.
Specifically, as shown in fig. 2, the current detection module includes a current sensor U3;
a first pin 1 of the current sensor U3 is connected with the power supply interface module, a third pin 3 of the current sensor U3 is grounded, an eighth pin 8 of the current sensor U3 is connected with the power supply, a fifth pin 5 of the current sensor U3 is grounded, and a seventh pin 7 of the current sensor U3 is connected with the signal amplification module.
In this embodiment, the current sensor U3 may be a current detection chip of type ACS 712.
In specific implementation, a first pin 1 of a current sensor U3 is connected to a power supply interface module to receive a power supply current input to an electric energy meter, a third pin 3 of the current sensor U3 is grounded, an eighth pin 8 of the current sensor U3 is connected to a power supply, a fifth pin 5 of the current sensor U3 is grounded, a seventh pin 7 of the current sensor U3 is connected to a signal amplification module, a detection signal is generated according to the power supply current input to the electric energy meter, and the detection signal is output to the signal amplification module.
Specifically, the signal amplification module comprises an operational amplifier U5;
the second pin 2 of the operational amplifier U5 is connected with the seventh pin 7 of the current sensor U3 and is grounded, the third pin 3 of the operational amplifier U5 is connected with a power supply through a resistor R6 and is grounded through a resistor R7, the fourth pin 4 of the operational amplifier U5 is grounded, the eighth pin 8 of the operational amplifier U5 is connected with the power supply, and the first pin 1 of the operational amplifier U5 is connected with the analog-to-digital conversion module and is grounded through a resistor R9 and a capacitor C10 which are connected in parallel.
In this embodiment, the operational amplifier U5 may be type-selected according to actual needs.
In specific implementation, the second pin 2 of the operational amplifier U5 is connected to the seventh pin 7 of the current sensor U3, and is connected to the detection signal output by the current detection module, and is grounded, the third pin 3 of the operational amplifier U5 is connected to the power supply through the resistor R6 and is grounded through the resistor R7, the fourth pin 4 of the operational amplifier U5 is grounded, the eighth pin 8 of the operational amplifier U5 is connected to the power supply, the first pin 1 of the operational amplifier U5 is connected to the analog-to-digital conversion module and is grounded through the resistor R9 and the capacitor C10 which are connected in parallel, the detection signal is amplified, and the amplified detection signal is obtained and is output to the control analog-to-digital conversion module.
Specifically, the analog-to-digital conversion module comprises an analog-to-digital converter U2;
the first pin of the analog-to-digital converter U2 is connected with the first pin of the operational amplifier U5, the fifteenth pin, the sixteenth pin, the seventeenth pin, the eighteenth pin and the nineteenth pin of the analog-to-digital converter U2 are connected with the control module, the fourteenth pin and the twentieth pin of the analog-to-digital converter U2 are connected with the power supply, the fourteenth pin of the analog-to-digital converter U2 is grounded through a capacitor C12, the twentieth pin of the analog-to-digital converter U2 is grounded through a capacitor C11, and the tenth pin and the thirteenth pin of the analog-to-digital converter U2 are grounded.
In this embodiment, the analog-to-digital converter U2 may be type-selected according to actual needs.
In specific implementation, a first pin of the analog-to-digital converter U2 is connected to a first pin 1 of the operational amplifier U5, and is connected to an amplified detection signal, a fifteenth pin 15, a sixteenth pin 16, a seventeenth pin 17, an eighteenth pin 18, and a nineteenth pin 19 of the analog-to-digital converter U2 are all connected to the control module, a fourteenth pin 14 and a twentieth pin 20 of the analog-to-digital converter U2 are all connected to the power supply, a fourteenth pin 14 of the analog-to-digital converter U2 is further grounded through a capacitor C12, a twentieth pin 20 of the analog-to-digital converter U2 is further grounded through a capacitor C11, a tenth pin 10 and a thirteenth pin 13 of the analog-to-digital converter U2 are both grounded, and the amplified detection signal is converted into a digital signal and is output to the control module through a fifteenth pin 15, a sixteenth pin 16, a seventeenth pin 17, an eighteenth pin 18, and a nineteenth pin 19.
Specifically, the control module comprises a microcontroller U1;
an eighteenth pin 18 of the microcontroller U1 is connected to one end of the crystal oscillator Y1 and one end of the capacitor C13, a nineteenth pin 19 of the microcontroller U1 is connected to the other end of the crystal oscillator Y1 and one end of the capacitor C14, the twentieth pin 20, the other end of the capacitor C13 and the other end of the capacitor C14 are all grounded, a thirty-first pin 31 and a forty-first pin 14 of the microcontroller U1 are all connected to the power supply, a twenty-first pin 21, a twenty-second pin 22, a twenty-third pin 23, a twenty-fourth pin 24 and a twenty-fifth pin 25 of the microcontroller U1 are correspondingly connected to a fifteenth pin 15, a sixteenth pin 16, a seventeenth pin 17, an eighteenth pin 18 and a nineteenth pin 19 of the analog-to digital converter U2, a twenty-sixth pin 26, a twenty-seventh pin 27, a twenty-eighth pin 28, a thirty-second pin 32, a thirty-third pin 33, a thirty-fourth pin 34, a thirty-fifth pin 35, a thirty-sixth pin 36, a thirty-seventh pin 37, a thirty-ninth pin 37 and a thirty-ninth pin 38 of the microcontroller U1 are all connected to the display module.
In this embodiment, the microcontroller U1 may be type-selected according to actual needs.
In specific implementation, an eighteenth pin 18 of the microcontroller U1 is connected to one end of the crystal oscillator Y1 and one end of the capacitor C13, a nineteenth pin 19 of the microcontroller U1 is connected to the other end of the crystal oscillator Y1 and one end of the capacitor C14, the twentieth pin 20 of the microcontroller U1, the other end of the capacitor C13 and the other end of the capacitor C14 are all grounded to generate an internal clock, the thirty-first pin 31 and the forty-fourth pin 40 of the microcontroller U1 are all connected to a power supply, the twenty-first pin 21, the twenty-second pin 22, the twenty-third pin 23, the twenty-fourth pin 24 and the twenty-fifth pin 25 of the microcontroller U1 are correspondingly connected to the fifteenth pin 15, the sixteenth pin 16, the seventeenth pin 17, the eighteenth pin 18 and the nineteenth pin 19 of the analog-to-digital converter U2, and a twenty-sixth pin 26, a twenty-seventh pin 27, a twenty-eighth pin 28, a thirty-second pin 32, a thirty-third pin 33, a thirty-fourth pin 34, a thirty-fifth pin 35, a thirty-sixth pin 36, a thirty-seventh pin 37, a thirty-eighth pin 38 and a thirty-ninth pin 39 of the microcontroller U1 are connected with the display module, generate a display signal according to the digital signal and output the display signal to the display module.
The embodiment provides a battery power consumption detection circuit of an electric energy meter, which amplifies collected detection signals through an operational amplifier, so that an analog-to-digital conversion module obtains digital signals according to the amplified detection signals, controls and displays the power supply current value input into the electric energy meter through the amplified detection signals, and improves the accuracy of battery power consumption detection of the electric energy meter.
Specifically, as shown in fig. 2, the display module includes a display LCD, the display LCD may be a display of a type LCD1602, a first pin 1 and a sixteenth pin 16 of the display LCD are grounded, a second pin 2 and a fifteenth pin 15 are connected to a power supply, and an output voltage VCC of the power supply is accessed, a third pin 3 of the display LCD is connected to a first pin 1 and a second pin 2 of a potentiometer PR1, respectively, a third pin 3 of the potentiometer PR1 is grounded, a fourth pin 4, a fifth pin 5, a sixth pin 6, a seventh pin 7, an eighth pin 8, a ninth pin 9, a tenth pin 10, an eleventh pin 11, a twelfth pin 12, a thirteenth pin 13, and a fourteenth pin 14 of the display LCD are connected to a twenty-sixth pin 26, a twenty-seventh pin 27, a twenty-eighth pin 28, a thirty-ninth pin 29, an eighth pin 38, a thirty-seventh pin 37, a thirty-sixth pin 36, a thirty-fifth pin 35, a thirty-fifth pin 34, a thirty-third pin 34, a thirty-eighth pin 33, and a thirty-sixth pin 14 of the microcontroller U1, and a thirty-sixth pin 14 of the display module is connected to a thirty-sixth pin 26, and a thirty-sixth pin 33 of the microcontroller U1, and a display module outputs a display signal according to a display current value and a display signal output signal corresponding to a power supply current value.
The embodiment provides an electric energy meter battery consumption detection circuitry, shows the supply current's of electric energy meter current value through the display, shows clearly directly perceived to the reading is accurate, can whether the audio-visual judgement electric energy meter breaks down, has improved the convenience that electric energy meter battery consumption detected.
Specifically, as shown in fig. 2, the circuit further includes a charging interface module;
the charging interface module can be a TYPE-C interface, a pin A1, a pin A12, a pin 1, a pin 2, a pin 3, a pin 4, a pin B1 and a pin B2 of the TYPE-C interface are all grounded, the pin A4, the pin A9, the pin B9 and the pin B4 are all connected with the anode of a voltage stabilizing diode D1, the cathode of the voltage stabilizing diode D1 is connected with a power supply, and the TYPE-C interface is used for connecting an external power supply when the power supply is charged.
The embodiment provides a battery power consumption detection circuit of an electric energy meter, which is connected with an external power supply and a power supply of the battery power consumption detection circuit of the electric energy meter through a TYPE-C interface, so that the function of charging the power supply in the battery power consumption detection circuit of the electric energy meter is realized.
Example two
On the basis of the first embodiment, the present embodiment provides an apparatus for detecting battery power consumption of an electric energy meter, including:
the battery power consumption detection circuit of the electric energy meter according to the first embodiment;
and the power supply is used for supplying power to each module in the electric energy meter battery power consumption detection circuit.
In this embodiment, the power source may be a storage battery, as shown in fig. 3 and 4, the device for detecting battery power consumption of an electric energy meter includes a cuboid body, a circuit for detecting battery power consumption of an electric energy meter and a power source are disposed in the body, a display LCD and a key switch S1 are disposed on one side of the body, as shown in fig. 3, they may be disposed on a front surface of the body, a charging interface TYPE _ C is disposed on the other side of the body away from the display LCD, as shown in fig. 4, it may be disposed on a rear surface of the body, a through hole may be further disposed on the rear surface of the body, a wire is inserted through the through hole, one end of the wire is connected to the circuit of the electric energy meter in the body, and is specifically connected to the power conversion module and the current detection module, a power supply interface J2 is disposed on the other end of the wire for connecting to a power supply socket of the electric energy meter, the device may further include a power indicator 10, the power indicator 10 is disposed on one side of the body, as shown in fig. 3, it may be disposed on the front surface of the body, and the power indicator 10 may be used for displaying a charging state of the device for detecting battery power consumption of an electric energy meter.
In the specific implementation, a battery socket of the electric energy meter is connected through a power supply interface J2, the electric energy meter is supplied with power through a power supply of a battery power consumption detection device of the electric energy meter, the electric energy meter works normally, meanwhile, the power supply current of the electric energy meter is detected through a current detection module, and the power supply current of the electric energy meter is displayed on a display LCD in real time after being processed through an analog-to-digital conversion module and a control module; when the electric energy meter is abnormal, the supply current of the electric energy meter is overlarge and exceeds the display range of the display LCD, and the display LCD cannot normally display the current value of the supply current of the electric energy meter, so that the fault of the electric energy meter can be judged.
The embodiment provides an electric energy meter battery consumption detection device, is connected with the electric energy meter through the power supply interface, supplies power for the electric energy meter through device internal power, has realized the electric energy meter power supply function to real-time detection and demonstration electric energy meter battery's consumption need not manual operation universal meter or ammeter, has solved the manual measurement electric energy meter battery consumption, and the great technical problem of measuring error has improved electric energy meter battery consumption detection's accuracy.
It should be noted that, in the specific structure of the battery power consumption detection circuit of the electric energy meter in this embodiment, reference is made to the first embodiment, and since this embodiment adopts all technical solutions of the first embodiment, at least all beneficial effects brought by the technical solutions of the first embodiment are achieved, and details are not repeated here.
The above is only the optional embodiment of the present invention, and not therefore the limit to the patent scope of the present invention, all the concepts of the present invention utilize the equivalent structure transformation of the content of the specification and the attached drawings, or the direct/indirect application in other related technical fields is included in the patent protection scope of the present invention.
Claims (10)
1. The circuit is characterized by comprising a power supply conversion module, a current detection module, an analog-to-digital conversion module, a control module and a display module;
the power supply conversion module is respectively connected with a power supply and the electric energy meter and is used for converting the output voltage of the power supply into a power supply voltage and inputting a power supply current for the electric energy meter;
the current detection module is connected with the electric energy meter and used for detecting the power supply current input into the electric energy meter and generating a detection signal;
the analog-to-digital conversion module is connected with the current detection module and is used for converting the detection signal into a digital signal;
the control module is connected with the analog-to-digital conversion module and used for generating a display signal according to the digital signal;
and the display module is connected with the control module and used for displaying the current value of the power supply current according to the display signal.
2. The circuit of claim 1, wherein the circuit further comprises a power supply interface module;
the power supply interface module is respectively connected with the power supply conversion module, the electric energy meter and the current detection module, and is used for inputting the power supply current into the electric energy meter and outputting the power supply current to the current detection module.
3. The circuit of claim 2, further comprising a reset module;
the reset module is used for outputting a reset signal;
the control module is connected with the reset module and is also used for controlling the display module to reset according to the reset signal.
4. The circuit of claim 3, wherein the reset module comprises a manual reset unit and a power-on reset unit;
the manual reset unit is respectively connected with the power supply and the control module and used for outputting the reset signal according to manual reset operation;
the power-on reset unit is respectively connected with the power supply and the control module and is used for automatically outputting the reset signal when the power consumption detection circuit of the electric energy meter is powered on.
5. The circuit of claim 3, wherein the circuit further comprises a signal amplification module;
the signal amplification module is connected with the current detection module and is used for amplifying the detection signal to obtain an amplified detection signal;
the analog-to-digital conversion module is connected with the signal amplification module and is also used for converting the amplified detection signal into a digital signal.
6. The circuit of claim 5, wherein the current detection module comprises a current sensor U3;
the first pin of the current sensor U3 is connected with the power supply interface module, the third pin of the current sensor U3 is grounded, the eighth pin of the current sensor U3 is connected with the power supply, the fifth pin of the current sensor U3 is grounded, and the seventh pin of the current sensor U3 is connected with the signal amplification module.
7. The circuit of claim 6, wherein the signal amplification module comprises an operational amplifier U5;
the second pin of the operational amplifier U5 is connected with the seventh pin of the current sensor U3 and is grounded, the third pin of the operational amplifier U5 is connected with the power supply through a resistor R6 and is grounded through a resistor R7, the fourth pin of the operational amplifier U5 is grounded, the eighth pin of the operational amplifier U5 is connected with the power supply, and the first pin of the operational amplifier U5 is connected with the analog-to-digital conversion module and is grounded through a resistor R9 and a capacitor C10 which are connected in parallel.
8. The circuit of claim 7, wherein the analog-to-digital conversion module comprises an analog-to-digital converter U2;
the first pin of the analog-to-digital converter U2 is connected with the first pin of the operational amplifier U5, the fifteenth pin, the sixteenth pin, the seventeenth pin, the eighteenth pin and the nineteenth pin of the analog-to-digital converter U2 are all connected with the control module, the fourteenth pin and the twentieth pin of the analog-to-digital converter U2 are all connected with the power supply, the fourteenth pin of the analog-to-digital converter U2 is further grounded through a capacitor C12, the twentieth pin of the analog-to-digital converter U2 is further grounded through a capacitor C11, and the tenth pin and the thirteenth pin of the analog-to-digital converter U2 are both grounded.
9. The circuit of claim 8, wherein the control module comprises a microcontroller U1;
an eighteenth pin of the microcontroller U1 is connected to one end of a crystal oscillator Y1 and one end of a capacitor C13, a nineteenth pin of the microcontroller U1 is connected to the other end of the crystal oscillator Y1 and one end of a capacitor C14, the twentieth pin of the microcontroller U1, the other end of the capacitor C13 and the other end of the capacitor C14 are all grounded, a thirty-first pin and a forty-fourth pin of the microcontroller U1 are all connected to the power supply, a twenty-first pin, a twenty-second pin, a twenty-third pin, a twenty-fourth pin and a twenty-fifth pin of the microcontroller U1 are correspondingly connected to a fifteenth pin, a sixteenth pin, a seventeenth pin, an eighteenth pin and a nineteenth pin of the analog-to-digital converter U2, and a twenty-sixth pin, a twenty-seventh pin, a twenty-eighth pin, a thirty-second pin, a thirty-third pin, a thirty-fourth pin, a thirty-fifth pin, a thirty-sixth pin, a thirty-seventh pin, a thirty-eighth pin and a thirty-ninth pin of the microcontroller U1 are all connected to the display module.
10. An apparatus for detecting battery power consumption of an electric energy meter, the apparatus comprising:
the electric energy meter battery power consumption detection circuit according to any one of claims 1 to 9;
and the power supply is used for supplying power to each module in the battery power consumption detection circuit of the electric energy meter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221515403.6U CN217879605U (en) | 2022-06-16 | 2022-06-16 | Battery power consumption detection circuit and device of electric energy meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221515403.6U CN217879605U (en) | 2022-06-16 | 2022-06-16 | Battery power consumption detection circuit and device of electric energy meter |
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| Publication Number | Publication Date |
|---|---|
| CN217879605U true CN217879605U (en) | 2022-11-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221515403.6U Active CN217879605U (en) | 2022-06-16 | 2022-06-16 | Battery power consumption detection circuit and device of electric energy meter |
Country Status (1)
| Country | Link |
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| CN (1) | CN217879605U (en) |
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2022
- 2022-06-16 CN CN202221515403.6U patent/CN217879605U/en active Active
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