CN114814714A - Photoelectric sampling device compatible with different types of intelligent electric energy meter detection - Google Patents
Photoelectric sampling device compatible with different types of intelligent electric energy meter detection Download PDFInfo
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- G01R35/04—Testing or calibrating of apparatus covered by the other groups of this subclass of instruments for measuring time integral of power or current
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Abstract
A photoelectric sampling device compatible with detection of different types of intelligent electric energy meters comprises a first light sensor, a second light sensor, a third light sensor, a first signal amplification circuit and a second signal amplification circuit; the first light sensor and the second light sensor respectively correspond to an active pulse lamp and a reactive pulse lamp of the first type of the in-plant electric energy meter, and the third light sensor and the second light sensor respectively correspond to an active pulse lamp and a reactive pulse lamp of the second type of the in-plant electric energy meter; the signal output ends of the first light sensor and the third light sensor are connected with the input end of the first signal amplifying circuit, and the signal output end of the second light sensor is connected with the input end of the second signal amplifying circuit. The invention can be compatible with the simultaneous acquisition of the active pulse lamp and the reactive pulse lamp of the state network Internet of things meter and the south network Internet of things meter under the condition of not replacing the photoelectric sampling device, reduces the operation of repeatedly adjusting the photoelectric sampler to carry out light focusing when the phenotype is replaced, and improves the verification efficiency.
Description
Technical Field
The invention relates to the technical field of electric energy meter measurement and detection, in particular to a photoelectric sampling device compatible with different types of intelligent electric energy meter detection.
Background
With the continuous development of the power metering industry, the types of the detected meters are more and more. The existing electric energy meter mainly comprises a state network Internet of things table and a south network Internet of things table. The error detection of the electric energy meter needs to collect the optical pulse signal sent by the pulse lamp of the electric energy represented by the detected meter, the collected optical pulse signal of the detected meter is converted into the electric pulse signal, the photoelectric sampling process needs the photoelectric sampler to be completed, the pulse of the detected electric energy meter has two pulse outputs, and one active electric energy pulse lamp and one reactive electric energy pulse lamp are respectively used.
The positions of pulse output signal lamps of the state grid electric energy meter and the south grid electric energy meter are different, as shown in fig. 1, the state grid internet of things electric energy meter pulse output indicator lamp is provided with an active pulse indicator lamp on the upper surface and a reactive indicator lamp on the lower surface; as shown in fig. 2, the south network internet of things electric energy meter pulse output indicator lamp is provided with an active pulse indicator lamp on the left and a reactive pulse indicator lamp on the right. Most of photoelectric samplers sold in the market at present are single-path optical pulse acquisition, or only one type of photoelectric sampler capable of acquiring detected type pulses can be realized. Due to the position difference of the pulse output indicator lamps, when an electric energy meter manufacturer examines and tests national grid and south grid electric energy meters, the height and the direction of the photoelectric collector need to be adjusted according to the frequent lifting, twisting and rotating of the position of a reactive pulse lamp of the national grid and south grid and grid to align the light ray sensor with the center of the pulse lamp, or the photoelectric samplers aiming at different types of electric energy meters are adopted, and the corresponding photoelectric samplers are replaced every time the examined type is replaced to adapt to pulse output signals output by the national grid and south grid electric energy meters.
The photoelectric sampler can sample optical pulse signals of different types of electric energy meters simultaneously, reduces operation steps of verification personnel, optimizes product structure, improves verification efficiency and reduces cost, and has great practical significance.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the photoelectric sampling device compatible with the detection of different types of intelligent electric energy meters, which is a national grid and south grid compatible integrated photoelectric pulse acquisition device.
A photoelectric sampling device compatible with a national network-south network Internet of things electric energy meter comprises a first light sensor, a second light sensor, a third light sensor, a first signal amplification circuit and a second signal amplification circuit; the first light sensor and the second light sensor respectively correspond to an active pulse lamp and a reactive pulse lamp of the first type of the internet of things electric energy meter, and the third light sensor and the second light sensor respectively correspond to an active pulse lamp and a reactive pulse lamp of the second type of the internet of things electric energy meter; the signal output ends of the first light sensor and the third light sensor are connected with the input end of the first signal amplifying circuit, and the signal output end of the second light sensor is connected with the input end of the second signal amplifying circuit.
Further, first light sensor and second light sensor are range from top to bottom, and second light sensor is located first light sensor below, and second light sensor and third light sensor are range from left to right, and second light sensor is located 3 right sides of third light sensor.
Furthermore, the first light ray sensor is a state network Internet of things electric energy meter, and the second type of Internet of things electric energy meter is a south network Internet of things electric energy meter.
Further, the first light sensor and the third light sensor are used for collecting the output of an active pulse lamp of the first type of internet of things electric energy meter or the second type of internet of things electric energy meter, and the first signal amplification circuit is used for amplifying the electric pulses output by the first light sensor and the third light sensor; the second light sensor is used for collecting the reactive pulse lamp output of the first-class in-plant electric energy meter or the second-class in-plant electric energy meter, and the second signal amplification circuit is used for amplifying the electric pulse output by the second light sensor.
Furthermore, the first light sensor, the second light sensor and the third light sensor all adopt phototriodes.
Further, the first signal amplifying circuit comprises a first signal comparing and amplifying circuit, a resistor R1, a resistor R2, a resistor R3, a resistor R4 and a capacitor C1, wherein the resistor R1 is connected with the capacitor C1 in parallel, one end of the first parallel circuit formed by the resistor R1 and the capacitor C1 is connected with signal output ends of the first light sensor and the third light sensor, and is connected to a non-inverting input end of the first signal comparing and amplifying circuit; the other end of the first parallel circuit is grounded, a +5V power supply is connected with the resistor R3 and the resistor R2 in series, and the series node of the resistor R3 and the resistor R2 is connected with the inverting input end of the first signal comparison amplifying circuit; the resistor R4 is used as a pull-up resistor of the pulse output end to be connected with a +5V power supply.
Furthermore, the second signal amplifying circuit comprises a second signal comparing and amplifying circuit, a resistor R5, a resistor R6, a resistor R7, a resistor R8 and a capacitor C2, wherein the resistor R5 is connected with the capacitor C2 in parallel, one end of the second parallel circuit formed by the resistor R5 and the capacitor C2 is connected with the signal output end of the second light sensor, and the second parallel circuit is connected to the non-inverting input end of the second signal comparing and amplifying circuit; the other end of the second parallel circuit is grounded, a +5V power supply is connected with the resistor R7 and the resistor R6 in series, and the series node of the resistor R7 and the resistor R6 is connected with the inverting input end of the second signal comparison amplifying circuit; the resistor R8 is used as a pull-up resistor of the pulse output end to be connected with a +5V power supply.
Furthermore, the light-tight device also comprises a non-metal light-tight casing, and the first light sensor, the second light sensor, the third light sensor, the first signal amplification circuit and the second signal amplification circuit are all arranged inside the non-metal light-tight casing.
According to the invention, by combining the position layout of the pulse lamps of the state network and south network Internet of things electric energy meters, a vertical and left-right distribution mode is adopted, and the collection of active electric energy pulse lamp signals and reactive electric energy pulse lamp signals of two types of the state network and south network electric energy meters is compatible, so that the operation of repeatedly adjusting the photoelectric sampler to focus light during phenotype replacement is reduced, the verification efficiency is improved, the types of the photoelectric sampler are reduced due to the compatible design, and the cost is saved.
Drawings
FIG. 1 is a schematic diagram of a structure and a pulse indication layout of a state network Internet of things electric energy meter;
FIG. 2 is a schematic diagram of a structure and a pulse indication layout of a south-network Internet of things electric energy meter;
FIG. 3 is a schematic layout diagram of 3 light sensors in the optoelectronic sampling device of the present invention;
fig. 4 is a circuit structure diagram of the photoelectric sampling device compatible with different types of intelligent electric energy meter detection according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments 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 drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
Referring to fig. 3 and 4, an embodiment of the present invention provides a photoelectric sampling apparatus compatible with different types of intelligent electric energy meter detection, including a first light sensor 1, a second light sensor 2, a third light sensor 3, a first signal amplifying circuit 4 and a second signal amplifying circuit 5. The first light sensor 1, the second light sensor 2 and the third light sensor 3 can adopt phototriodes, and the device has the advantages of high sensitivity, low cost and the like.
The first light sensor 1 and the second light sensor 2 correspond to an active pulse lamp and a reactive pulse lamp of a first-class internet of things electric energy meter (for example, a state internet of things electric energy meter) respectively, and the third light sensor 3 and the second light sensor 2 correspond to an active pulse lamp and a reactive pulse lamp of a second-class internet of things electric energy meter (for example, a south internet of things electric energy meter) respectively.
As shown in fig. 4, the first light sensor 1 and the third light sensor 3 are used for acquiring an active pulse lamp output of a first-type internet of things electric energy meter or a second-type internet of things electric energy meter, and signal output ends of the first light sensor 1 and the third light sensor 3 are connected with an input end of a first signal amplifying circuit 4, and are used for amplifying electric pulses output by the first light sensor 1 and the third light sensor 3; the second light sensor 2 is used for collecting the reactive pulse lamp output of the first-class in-plant electric energy meter or the second-class in-plant electric energy meter, and the signal output end of the second light sensor 2 is connected with the input end of the second signal amplification circuit 4 and used for amplifying the electric pulse output by the second light sensor 2.
The first signal amplifying circuit 4 comprises a first signal comparing and amplifying circuit, a resistor R1, a resistor R2, a resistor R3, a resistor R4 and a capacitor C1, wherein the resistor R1 is connected with the capacitor C1 in parallel, one end of the first parallel circuit formed by the resistor R1 and the capacitor C1 is connected with signal output ends of the first light sensor 1 and the third light sensor 3, and is connected to a non-inverting input end of the first signal comparing and amplifying circuit; the other end of the first parallel circuit is grounded, a +5V power supply is connected with the resistor R3 and the resistor R2 in series, and the series node of the resistor R3 and the resistor R2 is connected with the inverting input end of the first signal comparison amplifying circuit; the resistor R4 is used as a pull-up resistor of the pulse output end to be connected with a +5V power supply.
The second signal amplifying circuit 5 has the same structure as the first signal amplifying circuit 4, and comprises a second signal comparing and amplifying circuit, a resistor R5, a resistor R6, a resistor R7, a resistor R8 and a capacitor C2, wherein the resistor R5 is connected in parallel with the capacitor C2, one end of the second parallel circuit formed by the resistor R5 and the capacitor C2 is connected with the signal output end of the second light sensor 2, and is connected to the non-inverting input end of the second signal comparing and amplifying circuit; the other end of the second parallel circuit is grounded, a +5V power supply is connected with the resistor R7 and the resistor R6 in series, and the series node of the resistor R7 and the resistor R6 is connected with the inverting input end of the second signal comparison amplifying circuit; the resistor R8 is used as a pull-up resistor of the pulse output end to be connected with a +5V power supply.
The working principle is as follows: the photoelectric pulse input signals are collected by the first light sensor 1 or the third light sensor 3, high-frequency noise is filtered by a resistor R1 and a capacitor C1, and then the signals are input to the non-inverting input end of the signal comparison amplifying circuit, when an active pulse signal lamp of the state grid electric energy meter is on, the first light sensor 1 is switched on, the voltage of the non-inverting input end of the signal comparison amplifying circuit is larger than the divided voltage of a resistor R2 and a resistor R3 at the inverting input end, and the pulse output end of the signal comparison amplifying circuit outputs low level; when an active pulse signal lamp of the state grid electric energy meter is turned off, the pulse output end outputs a high level; the capacitor C1 is used as an input filter capacitor, the resistor R1 provides a discharge loop for the capacitor C1, and the resistor R4 is used as a pull-up resistor at the pulse output end.
Aiming at the position difference of active and reactive pulse lamps of a state net Internet of things table and a south net Internet of things table, the invention designs two light sensors (a first light sensor 1 and a third light sensor 3) to respectively collect active signals of the state net and the south net, a light collector (a second light sensor 2) is shared to collect reactive signals, and different size intervals are designed by adding the position of one light sensor on the structure of the existing photoelectric collector, so that the effect of being compatible with the state net Internet of things table and the south net Internet of things table and having reactive pulse lamps is achieved. As shown in fig. 3, the second light sensor 2 is located at the lower right corner of the photoelectric collector to collect a reactive signal, and when the photoelectric collector performs pulse collection on the state network internet of things table, the first light sensor 1 and the second light sensor 2 respectively correspond to the positions of an active pulse lamp and a reactive pulse lamp of the state network internet of things table; when the south of the photoelectric collector net thing allies oneself with the table and carries out the pulse and gather, third light sensor 3 and second light sensor 2 correspond the position of the active pulse lamp and the idle pulse lamp of south net thing allies oneself with the table respectively, through three light sensor's cooperation, reach the effect of compatible collection.
As shown in fig. 1 and fig. 3, when the sampling device performs pulse sampling on the state network and internet of things electric energy meter, the active pulse is on the top, the reactive pulse lamp is on the bottom, the first optical line sensor 1 corresponds to the active pulse lamp of the state network and internet of things meter, and the second optical line sensor 2 corresponds to the reactive pulse lamp of the state network and internet of things meter. When the first light sensor 1 detects a signal sent by an active lamp, the signal is processed through the first signal comparison amplifying circuit 4, and a pulse output end of the first signal comparison amplifying circuit 4 outputs a low level signal to perform active pulse measurement; when the second light sensor 2 detects a reactive signal, the second signal comparison and amplification circuit 5 performs signal processing, and the pulse output end of the second signal comparison and amplification circuit 5 outputs a low level signal to perform reactive pulse metering.
As shown in fig. 2 and 3, when sampling device carried out pulse sampling to south net thing allies oneself with the electric energy meter, active pulse was on the left, and the idle pulse lamp is on the right, and third light sensor 3 corresponds the active pulse lamp of south net thing allies oneself with the table, and second light sensor 2 corresponds the idle pulse lamp of south net thing allies oneself with the table. When the third light sensor 3 detects a signal sent by an active lamp, the signal is processed through the first signal comparison amplifying circuit 4, and a pulse output end of the first signal comparison amplifying circuit 4 outputs a low level signal to perform active pulse measurement; when the second light sensor 2 detects a reactive signal, the second signal comparison and amplification circuit 5 performs signal processing, and the pulse output end of the second signal comparison and amplification circuit 5 outputs a low level signal to perform reactive pulse metering.
The traditional photoelectric collector only has two light sensors, and cannot be compatible with the problem that the focusing needs to be repeatedly adjusted due to different positions of an active pulse lamp and a reactive pulse lamp. The invention adds a light sensor for collecting active signals on the basis of the original photoelectric collector, designs a proper position on the appearance structure, and is compatible with the effects of an active signal lamp and a reactive signal lamp of a national network Internet of things table and a south network Internet of things table, thereby achieving the purpose of repeatedly adjusting the photoelectric collector without replacing the tested object.
In one embodiment, the device also comprises a photoelectric sampler fixing support which is mainly used for three-axis adjustment of the photoelectric sampling device and is convenient to operate on light during use;
in one embodiment, the light source further comprises a non-metal light-tight casing, and the 3 light sensors and the 2 signal amplifying circuits are arranged inside the non-metal light-tight casing and used for preventing ambient light from interfering.
According to the invention, by combining the position layout of the pulse lamps of the state network and south network Internet of things electric energy meters, a vertical and left-right distribution mode is adopted, and the collection of active electric energy pulse lamp signals and reactive electric energy pulse lamp signals of two types of the state network and south network electric energy meters is compatible, so that the operation of repeatedly adjusting the photoelectric sampler to focus light during phenotype replacement is reduced, the verification efficiency is improved, the types of the photoelectric sampler are reduced due to the compatible design, and the cost is saved.
The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (8)
1. The utility model provides a compatible different grade type intelligence electric energy meter detects photoelectric sampling device which characterized in that includes: the device comprises a first light sensor, a second light sensor, a third light sensor, a first signal amplifying circuit and a second signal amplifying circuit; the first light sensor and the second light sensor respectively correspond to an active pulse lamp and a reactive pulse lamp of the first type of the internet of things electric energy meter, and the third light sensor and the second light sensor respectively correspond to an active pulse lamp and a reactive pulse lamp of the second type of the internet of things electric energy meter; the signal output ends of the first light sensor and the third light sensor are connected with the input end of the first signal amplifying circuit, and the signal output end of the second light sensor is connected with the input end of the second signal amplifying circuit.
2. The photoelectric sampling device compatible with different types of intelligent electric energy meter detection as claimed in claim 1, wherein: first light sensor and second light sensor are range from top to bottom, and second light sensor is located first light sensor below, and second light sensor is with third light sensor and is range about, and second light sensor is located third light sensor 3 right sides.
3. The photoelectric sampling device compatible with different types of intelligent electric energy meter detection as claimed in claim 2, wherein: the first light ray sensor is a state network Internet of things electric energy meter, and the second type of Internet of things electric energy meter is a south network Internet of things electric energy meter.
4. The optoelectronic sampling device of claim 3 compatible with different types of smart electric energy meter detection, wherein: the first light sensor and the third light sensor are used for collecting the output of an active pulse lamp of the first type of internet of things electric energy meter or the second type of internet of things electric energy meter, and the first signal amplification circuit is used for amplifying the electric pulses output by the first light sensor and the third light sensor; the second light sensor is used for collecting the reactive pulse lamp output of the first-class in-plant electric energy meter or the second-class in-plant electric energy meter, and the second signal amplification circuit is used for amplifying the electric pulse output by the second light sensor.
5. The photoelectric sampling device compatible with different types of intelligent electric energy meter detection as claimed in claim 1, wherein: and the first light sensor, the second light sensor and the third light sensor are all phototriodes.
6. The photoelectric sampling device compatible with different types of intelligent electric energy meter detection as claimed in claim 1, wherein: the first signal amplifying circuit comprises a first signal comparing and amplifying circuit, a resistor R1, a resistor R2, a resistor R3, a resistor R4 and a capacitor C1, wherein the resistor R1 is connected with the capacitor C1 in parallel, one end of the first parallel circuit formed by the resistor R1 and the capacitor C1 is connected with signal output ends of the first light sensor and the third light sensor, and is connected to a non-inverting input end of the first signal comparing and amplifying circuit; the other end of the first parallel circuit is grounded, a +5V power supply is connected with the resistor R3 and the resistor R2 in series, and the series node of the resistor R3 and the resistor R2 is connected with the inverting input end of the first signal comparison amplifying circuit; the resistor R4 is used as a pull-up resistor of the pulse output end to be connected with a +5V power supply.
7. The photoelectric sampling device compatible with different types of intelligent electric energy meter detection as claimed in claim 1, wherein: the second signal amplifying circuit comprises a second signal comparing and amplifying circuit, a resistor R5, a resistor R6, a resistor R7, a resistor R8 and a capacitor C2, wherein the resistor R5 is connected with the capacitor C2 in parallel, one end of the second parallel circuit formed by the resistor R5 and the capacitor C2 is connected with a signal output end of the second light sensor, and the second parallel circuit is connected to a non-inverting input end of the second signal comparing and amplifying circuit; the other end of the second parallel circuit is grounded, a +5V power supply is connected with the resistor R7 and the resistor R6 in series, and the series node of the resistor R7 and the resistor R6 is connected with the inverting input end of the second signal comparison amplifying circuit; the resistor R8 is used as a pull-up resistor of the pulse output end to be connected with a +5V power supply.
8. The photoelectric sampling device compatible with different types of intelligent electric energy meter detection as claimed in claim 1, wherein: the light-tight LED lamp further comprises a non-metal light-tight casing, and the first light sensor, the second light sensor, the third light sensor, the first signal amplification circuit and the second signal amplification circuit are all arranged inside the non-metal light-tight casing.
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