Power station meter with automatic light-shielding structure

Abstract

The utility model provides a power station meter with an automatic light-shielding structure, which includes an electric power meter, a photosensor, a bilateral cooperative system processing circuit, and a light-shielding structure. The electric power meter is used to display the electric power consumption, and the photosensor is connected to the electric power meter. The photosensor is used to collect the light information on the surface of the electric power meter, and the photosensor can convert the light information into a light voltage signal. The bilateral cooperative system processing circuit is used to receive a standard voltage signal and a light voltage signal, and the bilateral cooperative system processing circuit generates an indication signal based on the light voltage signal and the standard voltage signal. Based on the indication signal, the light-shielding structure can perform a light-shielding operation on the electric power meter.

Description

Technical Field

[0001] The utility model relates to the field of transformer substation equipment, in particular to a power station meter with an automatic light-shielding structure. Background Art

[0002] In modern society, the automation level of operation and maintenance of new energy power stations is constantly upgrading. The supervision of electricity meters in new energy power stations no longer requires manual transcription and reading. Instead, it is replaced by a fully automated electricity meter recognition system. Meter detection and automatic reading recognition have become one of the main tasks of new energy power stations during inspections. However, at present, most new energy power stations are located in places with complex outdoor environments. For example, the working scenes of photovoltaic power stations are generally located in places with strong outdoor light. When the electricity meter is actually used, sunlight will shine on the electricity meter from different angles. As a result, strong light exposure will cause the surface of the electricity meter to reflect light, which will greatly affect the implementation effect and accuracy of the meter image algorithm, and will also bring difficulties and challenges to image recognition in software. Therefore, there is a technical problem that the existing electricity meter is interfered by strong light during the automatic recognition process.

[0003] Therefore, it is necessary to provide a power station meter with an automatic light-shielding structure to solve the above technical problems. Utility Model Content

[0004] The utility model provides a power station meter with an automatic light-shielding structure, which effectively solves the technical problem that the existing power meter is disturbed by strong light during the automatic identification process.

[0005] The utility model provides a power station meter with an automatic light-shielding structure, which comprises:

[0006] Electricity meter, used to display the amount of electricity used;

[0007] A light sensor connected to the power meter, used to collect light information on the surface of the power meter and convert the light information into a light voltage signal;

[0008] A bilateral cooperative system processing circuit, configured to receive a standard voltage signal and the light voltage signal, and to generate an indication signal based on the light voltage signal and the standard voltage signal;

[0009] The light-shielding structure is used to perform light-shielding operation on the power meter based on the indication signal, so as to solve the technical problem that the power meter of the power station is disturbed by strong light during the automatic identification process.

[0010] Furthermore, the bilateral cooperative system processing circuit includes a first input unit, a second input unit, a common mode suppression unit, a reference unit, and a comparison unit, wherein the first input unit is used to input the light voltage signal, the second input unit is used to input the standard voltage signal, the common mode suppression unit is connected to the first input unit and the second input unit, and the common mode suppression unit is used to perform a common mode suppression operation on the light voltage signal and the standard voltage signal to generate an input signal;

[0011] The reference unit is used to output a reference voltage signal, and the reference voltage signal is between a first set value and a second set value, wherein the first set value is greater than the second set value. The comparison unit is used to compare the magnitudes of the input signal and the reference voltage signal, and based on the comparison result, the comparison unit outputs the indication signal.

[0012] Furthermore, the indication signal includes a first indication signal and a second indication signal. When the input signal is greater than the first set value, the comparison unit outputs the first indication signal, and the light-shielding structure performs a light-shielding operation on the power meter based on the first indication signal; when the input signal is less than the second set value, the comparison unit outputs the second indication signal, and the light-shielding structure does not perform a light-shielding operation on the power meter based on the second indication signal.

[0013] Furthermore, the first input unit includes a first amplifier, a first resistor, and a second resistor. The first amplifier includes a first positive input terminal, a first reverse input terminal, and a first output terminal. The first positive input terminal is used to input a light voltage signal. The first reverse input terminal is connected to the first output terminal. The first resistor is connected to the first output terminal. The second resistor is connected to the first resistor. The common-mode suppression unit includes a first connection terminal and a second connection terminal. The first connection terminal is connected between the first resistor and the second resistor. The second connection terminal is connected to the second resistor.

[0014] Furthermore, the second input unit includes a second amplifier, a third resistor, and a second resistor, the second amplifier includes a second positive input terminal, a second reverse input terminal and a second output terminal, the second positive input terminal is used to input a standard voltage signal, the second reverse input terminal is connected to the second output terminal, the third resistor is connected to the second output terminal, the fourth resistor is connected to the third resistor, the common mode suppression unit includes a third connection terminal, the third connection terminal is connected between the third resistor and the fourth resistor, wherein the resistance value of the third resistor is equal to the resistance value of the first resistor, and the resistance value of the fourth resistor is equal to the resistance value of the second resistor.

[0015] Furthermore, the voltage value of the input signal is determined by the voltage value of the illumination voltage signal, the voltage value of the standard voltage signal, the resistance value of the first resistor, and the resistance value of the second resistor.

[0016] Further, the comparison unit includes a comparator, a first power supply, and a second power supply, the reference unit also includes a reference power supply, a fifth resistor, and a sixth resistor, the comparator includes a third positive input terminal, a third reverse input terminal, a third output terminal, a first voltage input terminal, and a second voltage input terminal, the first power supply is connected to the first voltage input terminal, the first power supply is used to output a first voltage, the second power supply is connected to the second voltage input terminal, and the second power supply is used to output a second voltage;

[0017] The third positive input terminal is connected to the common mode suppression unit, the third positive input terminal is used to receive the input signal, the third reverse input terminal is used to receive the reference voltage signal, the third output terminal is used to output the indication signal, one end of the fifth resistor is connected to the third reverse input terminal, the other end of the sixth resistor is connected to the third output terminal, one end of the sixth resistor is connected to the third reverse input terminal, and the other end of the sixth resistor is connected to the reference power supply, and the reference power supply is used to output a reference power supply voltage.

[0018] Further, the first set value is determined by the resistance value of the fifth resistor, the resistance value of the sixth resistor, the voltage value of the reference power supply voltage, and the voltage value of the first voltage.

[0019] Furthermore, the second set value is determined by the resistance value of the fifth resistor, the resistance value of the sixth resistor, the voltage value of the reference power supply voltage, and the voltage value of the first voltage.

[0020] Furthermore, the light-shielding structure includes a light-shielding member and a driving component. The light-shielding member is movably arranged on the outside of the photosensitive sensor, and is used to perform light-shielding operations on the power meter. The driving component is located on one side of the power meter, and is used to drive the light-shielding member.

[0021] Compared with the prior art, the utility model has the following beneficial effects: the utility model provides a power station meter with an automatic light-shielding structure, and the power station meter with the automatic light-shielding structure is provided with a photosensitive sensor, a bilateral cooperative system processing circuit, and a light-shielding structure. The photosensitive sensor can collect the light information on the surface of the power meter, and the photosensitive sensor can convert the light information into a light voltage signal. The bilateral cooperative system processing circuit can receive a standard voltage signal and a light voltage signal, and the bilateral cooperative system processing circuit can generate an indication signal based on the light voltage signal and the standard voltage signal, and the light-shielding structure can perform a light-shielding operation on the power meter based on the indication signal. Therefore, when the power meter is exposed to strong light, the bilateral cooperative system processing circuit can drive the light-shielding structure to perform a light-shielding operation on the power meter. Furthermore, the power meter can automatically identify the power consumption of the power station better, effectively solving the technical problem that the existing power meter is interfered by strong light during the automatic identification process.

[0022] Since the power station meter is provided with a light-shielding structure, the power meter can also automatically and accurately identify the power consumption of the power station under strong light conditions. Moreover, under different light conditions, the power station meter with the automatic light-shielding structure can work stably. Therefore, the working efficiency of the power station meter with the automatic light-shielding structure is also high. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. The drawings described below are only drawings corresponding to some embodiments of the utility model.

[0024] Figure 1 The utility model is a block diagram of an embodiment of a power station meter with an automatic light-shielding structure.

[0025] Figure 2 The circuit diagram is a bilateral cooperative system processing circuit of an embodiment of a power station meter with an automatic light-shielding structure of the utility model.

[0026] Figure 3 This is one of the structural diagrams of an embodiment of a power station meter with an automatic light-shielding structure of the utility model.

[0027] Figure 4 This is the second structural diagram of an embodiment of a power station meter with an automatic light-shielding structure of the utility model.

[0028] Figure 5 This is the third structural diagram of an embodiment of a power station meter with an automatic light-shielding structure of the utility model.

[0029] Figure 6This is a structural diagram of a servo motor and a hexagonal stud of an embodiment of a power station meter with an automatic light-shielding structure of the utility model.

[0030] Figure 7 The present invention is a flowchart of an embodiment of a power station meter with an automatic light-shielding structure.

[0031] Figure 8 The figure is a relationship diagram between input signals and indication signals of an embodiment of a power station meter with an automatic light-shielding structure of the utility model.

[0032] In the figure, 10, a power station meter with an automatic light-shielding structure; 11, an electric power meter; 12, a photosensor; 13, a bilateral cooperative system processing circuit; 131, a first input unit; 132, a second input unit; 133, a common-mode suppression unit; 1331, a first connection end; 1332, a second connection end; 1333, a third connection end; 134, a reference unit; 135, a comparison unit; 14, a light-shielding structure; 141, a light-shielding member; 142, a transverse traction rack rod; 143, a longitudinal traction rack rod; 144, a transverse drive gear; 145, a longitudinal drive gear; 146, a servo motor; 147, a hexagonal stud; 15, a standard voltage module. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0034] Directional terms mentioned in the present invention, such as "up", "down", "front", "back", "left", "right", "inside", "outside", "side", "top" and "bottom", are only used for reference to the directions of the drawings. The directional terms used are used to illustrate and understand the present invention, and are not used to limit the present invention.

[0035] The words "first", "second" and the like in the terminology of the present invention are used for descriptive purposes only and should not be understood as indicating or implying relative importance, and should not be construed as limiting the order of precedence.

[0036] In the figures, structurally similar elements are denoted by the same reference numerals.

[0037] Please refer to Figure 1The utility model provides a power station meter 10 with an automatic light-shielding structure, and the power station meter 10 with the automatic light-shielding structure includes an electric power meter 11, a photosensitive sensor 12, a bilateral cooperative system processing circuit 13, and a light-shielding structure 14. The electric power meter 11 is used to display the power consumption, and the photosensitive sensor 12 is connected to the electric power meter 11, and the photosensitive sensor 12 can collect the light information on the surface of the electric power meter 11. In addition, the photosensitive sensor 12 can convert the light information into a light voltage signal. The bilateral cooperative system processing circuit 13 is used to receive a standard voltage signal and a light voltage signal, and the bilateral cooperative system processing circuit 13 generates an indication signal based on the light voltage signal and the standard voltage signal. Among them, the standard voltage signal is generated by a standard voltage module 15 in the power station meter 10 of the automatic light-shielding structure 14. The light-shielding structure 14 can perform a light-shielding operation on the electric power meter 11 based on the indication signal, so that the power station meter 10 with the automatic light-shielding structure can solve the problem that the existing electric power meter 11 is easily disturbed by strong light during the automatic identification process.

[0038] Please refer to Figure 2 The bilateral cooperative system processing circuit 13 includes a first input unit 131, a second input unit 132, a common mode suppression unit 133, a reference unit 134, and a comparison unit 135. The first input unit 131 is used to input a light voltage signal, and the second input unit 132 is used to input a standard voltage signal. The common mode suppression unit 133 connects the first input unit 131 and the second input unit 132, and the common mode suppression unit 133 is used to perform a common mode suppression operation on the light voltage signal and the standard voltage signal to generate an input signal. The reference unit 134 is used to output a reference voltage signal, and the reference voltage signal is between a first set value and a second set value. Among them, the first set value is greater than the second set value, and the comparison unit 135 is used to compare the size of the input signal and the reference voltage signal. Based on the comparison result, the comparison unit 135 can output an indication signal. Among them, the indication signal includes a first indication signal and a second indication signal. When the input signal is greater than the first set value, the comparison unit 135 outputs a first indication signal. The light-shielding structure 14 performs a light-shielding operation on the power meter 11 based on the first indication signal. When the input signal is less than the second set value, the comparison unit 135 outputs a second indication signal, and the light shielding structure 14 does not perform a light shielding operation on the power meter 11 based on the second indication signal.

[0039] Please refer to Figure 2The first input unit 131 includes a first amplifier A1, a first resistor R1, and a second resistor R2. The first amplifier A1 includes a first positive input terminal, a first reverse input terminal, and a first output terminal. The first positive input terminal is used to input a light voltage signal, and the first reverse input terminal is connected to the first output terminal. The first resistor R1 is connected to the first output terminal, and the second resistor R2 is connected to the first resistor R1. The common mode rejection unit 133 includes a first connection terminal 1331 and a second connection terminal 1332. The first connection terminal 1331 is connected between the first resistor R1 and the second resistor R2, and the second connection terminal 1332 is connected to the second resistor R2.

[0040] Please refer to Figure 2 The second input unit 132 includes a second amplifier A2, a third resistor R3, and a fourth resistor R4. The second amplifier A2 includes a second positive input terminal, a second negative input terminal, and a second output terminal. The second positive input terminal is used to input a standard voltage signal, the second negative input terminal is connected to the second output terminal, the third resistor R3 is connected to the second output terminal, and the fourth resistor R4 is connected to the third resistor R3. The common mode suppression unit 133 includes a third connection terminal 1333, and the third connection terminal 1333 is connected between the third resistor R3 and the fourth resistor R4.

[0041] Please refer to Figure 2 , the comparison unit 135 includes a comparator A6, a first power supply VCC, and a second power supply -VCC, and the reference unit 134 also includes a reference power supply UREF, a fifth resistor R13, and a sixth resistor R14. The comparator A6 includes a third positive input terminal, a third reverse input terminal, a third output terminal, a first voltage input terminal, and a second voltage input terminal, and the first power supply VCC is connected to the first voltage input terminal. The first power supply VCC is used to output a first voltage, the second power supply -VCC is connected to the second voltage input terminal, and the second power supply -VCC is used to output a second voltage. The third positive input terminal is connected to the common mode suppression unit 133, and the third positive input terminal is used to receive an input signal. The third reverse input terminal is used to receive a reference voltage signal, and the third output terminal is used to output an indication signal. One end of the fifth resistor R13 is connected to the third reverse input terminal, and the other end of the fifth resistor R13 is connected to the third output terminal. One end of the sixth resistor R14 is connected to the third reverse input terminal, and the other end of the sixth resistor R14 is connected to the reference power supply UREF, and the reference power supply UREF is used to output a reference power supply voltage.

[0042] Please refer to Figure 2, the common mode suppression unit 133 also includes a third amplifier A3, which includes a fourth positive input terminal, a fourth reverse input terminal, and a fourth output terminal. The fourth positive input terminal is connected to the third connection terminal 1333, the fourth reverse input terminal is connected to the first connection terminal 1331, and the fourth output terminal is connected to the second connection terminal 1332. The common mode suppression unit 133 also includes a fourth amplifier A4, a seventh resistor R5, an eighth resistor R6, a ninth resistor R7, and a first sliding rheostat R8. The fourth amplifier A4 includes a fifth positive input terminal, a fifth reverse input terminal, and a fifth output terminal. One end of the seventh resistor R5 is connected to the fourth output terminal, and the other end of the seventh resistor R5 is connected to the fifth reverse input terminal. One end of the eighth resistor R6 is connected to the fifth positive input terminal, and the other end of the eighth resistor R6 is grounded. One end of the ninth resistor R7 is connected to the fifth reverse input terminal, and the other end of the ninth resistor R7 is connected to the fifth output terminal. The common mode suppression unit 133 also includes a third power supply, which is used to power the fourth amplifier A4. The first sliding resistor R8 includes a first terminal a1, a second terminal b1, and a third terminal c1, wherein the first terminal a1 and the second terminal b1 are both connected to the fourth amplifier A4, and the third terminal c1 is connected to the third power supply. The common mode suppression unit 133 also includes a first diode D1, wherein the anode of the first diode D1 is connected to the fifth output terminal, and the cathode of the first diode D2 is connected to the fifth reverse input terminal.

[0043] Please refer to Figure 2 The common mode suppression unit 133 also includes a fifth amplifier A5, a tenth resistor R9, an eleventh resistor R10, a twelfth resistor R11, and a first sliding rheostat R8. The fifth amplifier A5 includes a sixth positive input terminal, a sixth reverse input terminal, and a sixth output terminal. One end of the tenth resistor R9 is connected to the fifth output terminal, and the other end of the tenth resistor R9 is connected to the sixth reverse input terminal. One end of the eleventh resistor R10 is connected to the sixth positive input terminal, and the other end of the eleventh resistor R10 is grounded. One end of the twelfth resistor R11 is connected to the second connection terminal, and the other end of the twelfth resistor R11 is connected to the sixth output terminal, and the sixth reverse input terminal is connected to the twelfth resistor R11. The common mode suppression unit 133 also includes a fourth power supply, and the fourth power supply is used to power the fourth amplifier A4. The first sliding rheostat R8 includes a fourth terminal a2, a fifth terminal b2, and a sixth terminal c2. The fourth terminal a2 and the fifth terminal b2 are both connected to the fifth amplifier A5, and the sixth terminal c2 is connected to the fourth power supply. The common mode suppression unit 133 further includes a second diode D2 , an anode of the second diode D1 is connected to the tenth resistor R9 , and a cathode of the second diode D2 is connected to the fifth output terminal.

[0044] Please refer to Figure 2In actual operation, the resistance value of the third resistor R3 is equal to the resistance value of the first resistor R1, and the resistance value of the fourth resistor R4 is equal to the resistance value of the second resistor R2. Thus, the voltage value of the input signal is determined by the voltage value of the illumination voltage signal, the voltage value of the standard voltage signal, the resistance value of the first resistor R1, and the resistance value of the second resistor R2. The voltage value of the input signal is Uout, Uout = (Vi n2-Vi n1) * (r2 / r1). Among them, Vin2 is the voltage value of the illumination voltage signal, and Vin1 is the voltage value of the standard voltage signal. r1 is the resistance value of the first resistor R1, and r2 is the resistance value of the second resistor R2. Moreover, the first set value is determined by the resistance value of the fifth resistor R13, the resistance value of the sixth resistor R14, the voltage value of the reference power supply voltage, and the voltage value of the first voltage. The first set value is set to VH, VH = r14 / (r13+r14)*uref+r14 / (r13+r14)*vcc. Wherein, r13 is the resistance value of the fifth resistor R13, and r14 is the resistance value of the sixth resistor R14. uref is the voltage value of the reference power supply voltage, and vcc is the voltage value of the first voltage, and the first voltage is output by the first power supply VCC. In addition, the second set value is determined by the resistance value of the fifth resistor R13, the resistance value of the sixth resistor R14, the voltage value of the reference power supply voltage, and the voltage value of the first voltage. The second set value is set to VL, VH = r14 / (r13+r14)*uref-r14 / (r13+r14)*uref. Wherein, r13 is the resistance value of the fifth resistor R13, and r14 is the resistance value of the sixth resistor R14. uref is the voltage value of the reference power supply voltage, and vcc is the voltage value of the first voltage.

[0045] Please refer to Figure 3 , Figure 5 and Figure 6The light-shielding structure 14 includes a light-shielding member 141 and a driving assembly. The light-shielding member 141 is movably disposed on the outside of the photosensitive sensor 12, and the light-shielding member 141 is used to perform light-shielding operation on the power meter 11. The driving assembly is located on one side of the power meter 11, and the driving assembly is used to drive the light-shielding member 141. The driving assembly includes a transverse traction rack rod 142, a longitudinal traction rack rod 143, a transverse driving gear 144, a longitudinal driving gear 145, two servo motors 146, and two hexagonal studs 147. The longitudinal driving gear 145 is movably connected to the longitudinal traction rack rod 143, and the rotation of the longitudinal driving gear 145 drives the longitudinal traction rack rod 143 to move longitudinally. The transverse driving gear 144 is movably connected to the transverse traction rack rod 142, and the rotation of the transverse driving gear drives the longitudinal traction rack rod 143 to move laterally. The centers of the transverse driving gear 144 and the longitudinal driving gear 145 are provided with hexagonal stud holes, and the hexagonal studs 147 are respectively penetrated through the hexagonal stud holes of the transverse driving gear 144 and the longitudinal driving gear 145. The two servo motors 146 can respectively drive the two hexagonal studs 147 to rotate, so that the two hexagonal studs 147 can respectively drive the transverse driving gear 144 and the longitudinal driving gear 145 to rotate. Thus, the transverse driving gear 144 can drive the light shielding member 141 to move in the horizontal direction by pulling the rack rod 142 in the transverse direction, and the longitudinal driving gear 145 can drive the light shielding member 141 to move in the vertical direction by pulling the rack rod 143 in the longitudinal direction. Therefore, the light shielding member 141 can move to the outside of the electricity meter 11, so that the light shielding member 141 can cover the peripheral side of the electricity meter 11. The working state of the light shielding member 141 is as shown in FIG. Figure 5 As shown, the light shielding member 141 can perform a light shielding operation on the electric power meter 11 .

[0046] exist Figure 4 and Figure 5 Based on Figure 7 and Figure 8 , the photosensitive sensor 12 can collect the light information on the surface of the power meter 11. In addition, the photosensitive sensor 12 converts the light information into a light voltage signal, which is linearly proportional to the light intensity. The bilateral cooperative system processing circuit 13 can process and judge the collected light voltage signal. The bilateral cooperative process is as follows: Figure 7 shown.

[0047] When the input signal is smaller, the comparison unit 135 outputs a second indication signal.

[0048] When the input signal gradually increases, but the input signal is still less than the first set value, since the in-phase input of the comparator A6 is always greater than the inverting input, the comparison unit 135 still outputs the second indication signal, and the light-shielding structure 14 will not perform a light-shielding operation on the power meter 11 based on the second indication signal. At this time, the voltage value of the second indication signal is equal to the voltage value of the first voltage. The first voltage is output by the first power supply VCC, and the voltage value of the first voltage is vcc, so the voltage value of the second indication signal is vcc. Furthermore, the light-shielding structure 14 will not perform a light-shielding operation on the power meter 11 based on the second indication signal. At this time, the power meter is exposed to weak light. As Figure 4 As shown, the light shielding member 141 is located at one side of the power meter 11 , and the light shielding member 141 will not perform a light shielding operation on the power meter 11 .

[0049] The input signal continues to increase, and at the moment when the input signal is slightly larger than the first set value, since the non-inverting input of the comparator A6 is smaller than the inverting input, the comparison unit 135 outputs the first indication signal. At this time, the voltage value of the first indication signal is equal to the voltage value of the second voltage. The second voltage is output by the second power supply -VCC, and the voltage value of the second voltage is -vcc, so the voltage value of the first indication signal is -vcc. The light-shielding structure 14 performs a light-shielding operation on the power meter 11 based on the first indication signal. Thereafter, even if the light voltage signal continues to increase, the comparison unit 135 still outputs the first indication signal. At this time, the power meter is exposed to strong light, such as Figure 5 As shown, the light shielding member 141 is disposed on the outer side of the electric power meter 11 , and the light shielding member 141 performs a light shielding operation on the electric power meter 11 .

[0050] The input signal starts to decrease. When the input signal is greater than the second set value and less than the first set value, since the voltage at the inverting input terminal of the comparator A6 is still greater than the non-inverting input terminal, the comparison unit 135 still outputs the first indication signal.

[0051] When the input signal gradually exceeds the first set value, the indication signal will jump. However, when the input signal gradually becomes less than the first set value, the indication signal will not change. This is aimed at the delay of light illumination in new energy power stations, as well as actual special circumstances. For example, if a reflective surface outdoors suddenly and briefly illuminates the photosensitive module, there is no need to adjust the light shielding baffle at this time. This design can effectively solve such problems. Even if the input signal fluctuates slightly around the first set value, it will not affect the operation of the light shielding member 141.

[0052] The input signal continues to decrease. At the moment when the input signal is slightly less than the set value, since the voltage at the inverting input terminal of the comparator A6 is less than the voltage at the non-inverting input terminal, the comparison unit 135 outputs a second indication signal. At this time, the voltage value of the second indication signal is equal to the voltage value of the first voltage, that is, the voltage value of the second indication signal is vcc. Moreover, the light shielding structure 14 will not perform a light shielding operation on the power meter 11 based on the second indication signal.

[0053] Please refer to Figure 2 and Figure 8 A processor is disposed inside the light-shielding structure 14. Figure 8 As shown by the broken line 1 in FIG. 1 , according to the gradual increase of the input signal, the processor can determine that the light intensity received by the power meter 11 is gradually increasing and exceeds the set threshold value, which is VH. Figure 8 As shown by the broken line 2 in , according to the gradual decrease of the input signal, the processor can determine that the light intensity received by the power meter 11 is gradually weakening and is lower than the set threshold value, which is VL. Since the comparison unit 135 will output a corresponding indication signal during the gradual change of the input signal, the light shielding structure 14 can perform a light shielding operation on the power meter 11 based on the indication signal.

[0054] The working principle of the utility model is as follows: the user sets the standard voltage signal through the standard voltage module 15, and then the photosensitive sensor 12 can collect the light information on the surface of the power meter 11, and the photosensitive sensor 12 can convert the light information into a light voltage signal. The bilateral cooperative system processing circuit 13 receives the light voltage signal through the first input unit 131, and the bilateral cooperative system processing circuit 13 receives the standard voltage signal generated by the standard voltage module 15 through the second input unit 132. The common mode suppression unit 133 can perform a common mode suppression operation on the light voltage signal and the standard voltage signal, and then the common mode suppression unit 133 generates an input signal. Then, the comparison unit 135 can compare the size of the input signal and the reference voltage signal, and the reference voltage signal is output by the reference unit 134. Moreover, the reference voltage signal is between the first set value and the second set value, wherein the first set value is greater than the second set value. When the input signal is greater than the first set value, the comparison unit 135 outputs a first indication signal, and the light shielding structure 14 performs a light shielding operation on the power meter 11 based on the first indication signal. When the input signal is less than the second set value, the comparison unit 135 outputs a second indication signal, and the light shielding structure 14 will not perform a light shielding operation on the power meter 11 based on the second indication signal.

[0055] The utility model provides a power station meter with an automatic light-shielding structure, and the power station meter with the automatic light-shielding structure is provided with a photosensitive sensor, a bilateral cooperative system processing circuit, and a light-shielding structure. The photosensitive sensor can collect light information on the surface of the power meter, and the photosensitive sensor can convert the light information into a light voltage signal. The bilateral cooperative system processing circuit can receive a standard voltage signal and a light voltage signal, and the bilateral cooperative system processing circuit can generate an indication signal based on the light voltage signal and the standard voltage signal, and the light-shielding structure can perform a light-shielding operation on the power meter based on the indication signal. Therefore, when the power meter is exposed to strong light, the bilateral cooperative system processing circuit can drive the light-shielding structure to perform a light-shielding operation on the power meter. Furthermore, the power meter can automatically identify the power consumption of the power station well, and effectively solves the technical problem that the existing power meter is disturbed by strong light during the automatic identification process. Since the power station meter is provided with a light-shielding structure, the power meter can also automatically and accurately identify the power consumption of the power station under the condition of strong light exposure. Moreover, under different light conditions, the power station meter with the automatic light-shielding structure can work stably. Therefore, the working efficiency of the power station meter with the automatic light-shielding structure is also relatively high.

[0056] In summary, although the present invention has been disclosed as above in terms of preferred embodiments, the above preferred embodiments are not intended to limit the present invention. A person skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be based on the scope defined in the claims.

Claims

1. A power station meter with an automatic light-shielding structure, characterized in that: It includes: Electricity meter, used to display the amount of electricity used; A light sensor connected to the power meter, used to collect light information on the surface of the power meter and convert the light information into a light voltage signal; A bilateral cooperative system processing circuit, configured to receive a standard voltage signal and the light voltage signal, and to generate an indication signal based on the light voltage signal and the standard voltage signal; The light-shielding structure is used to perform a light-shielding operation on the power meter based on the indication signal.

2. The power station meter with automatic light-shielding structure according to claim 1, characterized in that: The bilateral cooperative system processing circuit comprises a first input unit, a second input unit, a common mode suppression unit, a reference unit, and a comparison unit, wherein the first input unit is used to input the light voltage signal, the second input unit is used to input the standard voltage signal, the common mode suppression unit is connected to the first input unit and the second input unit, and the common mode suppression unit is used to perform a common mode suppression operation on the light voltage signal and the standard voltage signal to generate an input signal; The reference unit is used to output a reference voltage signal, and the reference voltage signal is between a first set value and a second set value, wherein the first set value is greater than the second set value. The comparison unit is used to compare the magnitudes of the input signal and the reference voltage signal, and based on the comparison result, the comparison unit outputs the indication signal.

3. The power station meter with automatic light-shielding structure according to claim 2, characterized in that: The indication signal includes a first indication signal and a second indication signal. When the input signal is greater than the first set value, the comparison unit outputs the first indication signal, and the light-shielding structure performs a light-shielding operation on the power meter based on the first indication signal; when the input signal is less than the second set value, the comparison unit outputs the second indication signal, and the light-shielding structure does not perform a light-shielding operation on the power meter based on the second indication signal.

4. The power station meter with automatic light-shielding structure according to claim 2, characterized in that: The first input unit includes a first amplifier, a first resistor, and a second resistor. The first amplifier includes a first positive input terminal, a first reverse input terminal, and a first output terminal. The first positive input terminal is used to input a light voltage signal. The first reverse input terminal is connected to the first output terminal. The first resistor is connected to the first output terminal. The second resistor is connected to the first resistor. The common-mode suppression unit includes a first connection terminal and a second connection terminal. The first connection terminal is connected between the first resistor and the second resistor. The second connection terminal is connected to the second resistor.

5. The power station meter with automatic light-shielding structure according to claim 4, characterized in that: The second input unit includes a second amplifier, a third resistor, and a fourth resistor. The second amplifier includes a second positive input terminal, a second reverse input terminal, and a second output terminal. The second positive input terminal is used to input a standard voltage signal. The second reverse input terminal is connected to the second output terminal. The third resistor is connected to the second output terminal. The fourth resistor is connected to the third resistor. The common-mode suppression unit includes a third connection terminal, and the third connection terminal is connected between the third resistor and the fourth resistor. The resistance value of the third resistor is equal to the resistance value of the first resistor, and the resistance value of the fourth resistor is equal to the resistance value of the second resistor.

6. The power station meter with automatic light-shielding structure according to claim 5, characterized in that: The voltage value of the input signal is determined by the voltage value of the illumination voltage signal, the voltage value of the standard voltage signal, the resistance value of the first resistor, and the resistance value of the second resistor.

7. The power station meter with automatic light-shielding structure according to claim 3, characterized in that: The comparison unit includes a comparator, a first power supply, and a second power supply. The reference unit also includes a reference power supply, a fifth resistor, and a sixth resistor. The comparator includes a third positive input terminal, a third negative input terminal, a third output terminal, a first voltage input terminal, and a second voltage input terminal. The first power supply is connected to the first voltage input terminal, and the first power supply is used to output a first voltage. The second power supply is connected to the second voltage input terminal, and the second power supply is used to output a second voltage. The third positive input terminal is connected to the common mode suppression unit, the third positive input terminal is used to receive the input signal, the third reverse input terminal is used to receive the reference voltage signal, the third output terminal is used to output the indication signal, one end of the fifth resistor is connected to the third reverse input terminal, the other end of the sixth resistor is connected to the third output terminal, one end of the sixth resistor is connected to the third reverse input terminal, and the other end of the sixth resistor is connected to the reference power supply, and the reference power supply is used to output a reference power supply voltage.

8. The power station meter with automatic light-shielding structure according to claim 7, characterized in that: The first set value is determined by the resistance value of the fifth resistor, the resistance value of the sixth resistor, the voltage value of the reference power supply voltage, and the voltage value of the first voltage.

9. The power station meter with automatic light-shielding structure according to claim 7, characterized in that: The second set value is determined by the resistance value of the fifth resistor, the resistance value of the sixth resistor, the voltage value of the reference power supply voltage, and the voltage value of the first voltage.

10. The power station meter with automatic light-shielding structure according to claim 3, characterized in that: The light-shielding structure includes a light-shielding member and a driving component. The light-shielding member is movably arranged on the outside of the photosensitive sensor, and is used to perform light-shielding operations on the power meter. The driving component is located on one side of the power meter, and is used to drive the light-shielding member.

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