CN221261106U - Metering module and plug-in metering device - Google Patents
Metering module and plug-in metering device Download PDFInfo
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- CN221261106U CN221261106U CN202323057074.2U CN202323057074U CN221261106U CN 221261106 U CN221261106 U CN 221261106U CN 202323057074 U CN202323057074 U CN 202323057074U CN 221261106 U CN221261106 U CN 221261106U
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- 238000005070 sampling Methods 0.000 claims abstract description 110
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- 238000004891 communication Methods 0.000 claims abstract description 22
- 230000009471 action Effects 0.000 claims abstract description 4
- 230000003993 interaction Effects 0.000 claims abstract description 4
- 239000003990 capacitor Substances 0.000 claims description 62
- 238000009434 installation Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 abstract description 11
- 230000005611 electricity Effects 0.000 abstract description 5
- 238000005259 measurement Methods 0.000 abstract description 3
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- 238000005859 coupling reaction Methods 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 2
- 230000005284 excitation Effects 0.000 description 1
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- 239000004973 liquid crystal related substance Substances 0.000 description 1
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Abstract
The utility model belongs to the technical field of electric measurement, and particularly relates to a metering module and a pluggable metering device, wherein the metering module comprises: the device comprises a processing unit, a current sampling unit, a voltage sampling unit, an output control unit, a communication unit and a display unit; the current sampling unit and the voltage sampling unit are connected to the corresponding sampling ends so as to send corresponding sampling signals to the processing unit; the corresponding relay action is controlled by the output control unit; the processing unit performs data interaction with external equipment through the communication unit; the processing unit displays data through the display unit; according to the utility model, the current signal and the voltage signal are sampled by the current sampling unit and the voltage sampling unit at the same time, so that various parameters of electric equipment can be monitored in real time, the detection precision can be improved, and the electricity safety can be improved.
Description
Technical Field
The utility model belongs to the technical field of electric measurement, and particularly relates to a metering module and a pluggable metering device.
Background
The electric metering device not only needs to meet the electric metering function, but also needs to execute the protection function, and improves the electric safety.
The existing electric metering device adopts single-path current sampling, whether a measurement result is correct or not cannot be checked, the accuracy of a detection result is low, the electricity utilization safety can be affected once the fluctuation of the detection result is too large, meanwhile, the existing electric metering device adopts single-path relay control to execute electricity utilization protection, and the risk is too high.
In addition, traditional electric metering device dismouting is loaded down with trivial details, leads to wiring efficiency, detection efficiency low.
Therefore, there is a need to develop a new metering module and a plug-in metering device to solve the above problems.
Disclosure of utility model
The utility model aims to provide a metering module and a pluggable metering device.
In order to solve the above technical problems, the present utility model provides a metering module, which includes: the device comprises a processing unit, a current sampling unit, a voltage sampling unit, an output control unit, a communication unit and a display unit; the current sampling unit, the voltage sampling unit, the output control unit, the communication unit and the display unit are electrically connected with the processing unit; the current sampling unit and the voltage sampling unit are suitable for being connected with corresponding sampling ends so as to send corresponding sampling signals to the processing unit; the processing unit is suitable for controlling the action of the corresponding relay through the output control unit; the processing unit is suitable for carrying out data interaction with external equipment through the communication unit; and the processing unit is suitable for displaying the data through the display unit.
Further, the current sampling unit includes: a first loop current sampling circuit and a second loop current sampling circuit; the first loop current sampling circuit and the second loop current sampling circuit are respectively connected to corresponding sampling ends so as to send corresponding sampling signals to the processing unit.
Further, the first loop current sampling circuit includes: the first connector, the first resistor, the second resistor, the third resistor, the fourth resistor, the first capacitor and the second capacitor; one end of the first resistor is connected with one end of the first connector and one end of the second resistor, the other end of the first resistor is grounded, the other end of the second resistor is connected with one end of the first capacitor and the processing unit, and the other end of the first capacitor is grounded; one end of the third resistor is connected with the other end of the first connector and one end of the fourth resistor, the other end of the third resistor is grounded, the other end of the fourth resistor is connected with one end of the second capacitor and the processing unit, and the other end of the second capacitor is grounded; the first connector is suitable for being connected with a corresponding sampling end.
Further, the second loop current sampling circuit includes: a second connector, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a third capacitor and a fourth capacitor; one end of the fifth resistor is connected with one end of the second connector and one end of the sixth resistor, the other end of the fifth resistor is grounded, the other end of the sixth resistor is connected with one end of the third capacitor and the processing unit, and the other end of the third capacitor is grounded; one end of the seventh resistor is connected with the other end of the second connector and one end of the eighth resistor, the other end of the seventh resistor is grounded, the other end of the eighth resistor is connected with one end of the fourth capacitor and the processing unit, and the other end of the fourth capacitor is grounded; the second connector is suitable for being connected with a corresponding sampling end.
Further, the voltage sampling unit includes: a voltage sampling circuit; the voltage sampling circuit is provided with a ninth resistor, a tenth resistor, a fifth capacitor and a sixth capacitor; one end of the ninth resistor is connected with the processing unit and one end of the fifth capacitor, the other end of the ninth resistor is grounded, and the other end of the fifth capacitor is grounded; one end of the tenth resistor is connected with the processing unit and one end of the sixth capacitor, the other end of the tenth resistor is grounded, and the other end of the sixth capacitor is grounded.
Further, the output control unit includes: the first relay driving chip and the second relay driving chip are connected with the first connector; the relay driving chip I and the relay driving chip II are electrically connected with the processing unit, and the relay driving chip I and the relay driving chip II are electrically connected with the third connector; the third connector is adapted to access a corresponding relay.
Further, the communication unit includes: an RS485 transceiver; the RS485 transceiver is electrically connected with the processing unit.
Further, the display unit includes: a display screen; the display screen is electrically connected with the processing unit.
Further, the metering module further comprises: and the power supply unit is used for supplying power to the processing unit, the current sampling unit, the voltage sampling unit, the output control unit, the communication unit and the display unit.
In another aspect, the present utility model provides a plug-in metering device comprising: the device comprises a shell, an upper cover, a plug head and the metering module; wherein, an installation cavity is arranged in the shell for installing the metering module; the upper cover is buckled on the top opening so as to limit the plug head between the shell and the upper cover; the plug head is provided with a plurality of wiring terminals, and each wiring terminal is electrically connected with the metering module.
The utility model has the advantages that the current signal and the voltage signal are sampled simultaneously through the current sampling unit and the voltage sampling unit, so that various parameters of electric equipment can be monitored in real time, meanwhile, the current sampling unit is provided with two paths of current sampling, the sampling results can be synchronously compared, the detection precision is improved, and the output control unit adopts two paths of output control relays, thereby improving the fault tolerance and further improving the electricity safety.
Additional features and advantages of the utility model will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.
In order to make the above objects, features and advantages of the present utility model more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a functional block diagram of a metering module of the present utility model;
FIG. 2 is a circuit diagram of a processing unit of the present utility model;
FIG. 3 is a circuit diagram of a first loop current sampling circuit of the present utility model;
FIG. 4 is a circuit diagram of a second loop current sampling circuit of the present utility model;
FIG. 5 is a circuit diagram of a voltage sampling circuit of the present utility model;
fig. 6 is a first part of a circuit diagram of an output control unit of the present utility model;
FIG. 7 is a second portion of a circuit diagram of the output control unit of the present utility model;
fig. 8 is a third part of a circuit diagram of the output control unit of the present utility model;
fig. 9 is a circuit diagram of a communication unit of the present utility model;
Fig. 10 is a circuit diagram of a display unit of the present utility model;
FIG. 11 is a circuit diagram of a pulsed lamp circuit of the present utility model;
fig. 12 is a circuit diagram of a power supply unit of the present utility model;
FIG. 13 is a block diagram of a pluggable metering device of the present utility model;
Fig. 14 is a structural view of the case and the upper cover of the present utility model when they are separated.
In the figure:
1. a housing; 101. Buckling the hole; 102. A clamping groove;
2. an upper cover; 201. A buckle; 202. A limiting plate;
3. a plug head; 301. A connection terminal; 302. A chuck;
U1, a singlechip; MT1, first connector; r15 is a first resistor; r24, a second resistor; r16, third resistor; r25, fourth resistor; c3, a first capacitor; c4, a second capacitor; MT2, second connector; r17, fifth resistance; r28, sixth resistance; r22, seventh resistance; r10, eighth resistor; c15, a third capacitor; c16, a fourth capacitor; r26, ninth resistor; r27, tenth resistor; c16, a fifth capacitor; c14, a sixth capacitor; KZ2, third connector; u6, a relay driving chip I; u8 relay driving chip II; u7, RS485 transceiver; LCD, display screen.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Embodiment 1, in this embodiment, as shown in fig. 1 to 12, this embodiment provides a metering module, which includes: the device comprises a processing unit, a current sampling unit, a voltage sampling unit, an output control unit, a communication unit and a display unit; the current sampling unit, the voltage sampling unit, the output control unit, the communication unit and the display unit are electrically connected with the processing unit; the current sampling unit and the voltage sampling unit are suitable for being connected with corresponding sampling ends so as to send corresponding sampling signals to the processing unit; the processing unit is suitable for controlling the action of the corresponding relay through the output control unit; the processing unit is suitable for carrying out data interaction with external equipment through the communication unit; and the processing unit is suitable for displaying the data through the display unit.
In this embodiment, this embodiment is through current sampling unit, voltage sampling unit simultaneously to current signal and voltage signal sampling, can real-time supervision consumer's various parameters, and current sampling unit sets up two-way current sampling simultaneously, can compare the sampling result in step, improves the detection precision to output control unit adopts two-way output control relay, improves fault tolerance, and then improves the power consumption safety.
In this embodiment, referring to fig. 2 and 11, the processing unit includes: the singlechip U1U1 can realize functions such as data receiving and dispatching, processing, control to singlechip U1U1 links to each other with pulse lamp one LED1, two LED2 of pulse lamp, can realize the excitation pulse light, realizes pulse control, and response is fast and the precision is high.
In this embodiment, referring to fig. 3 to 4, the current sampling unit includes: a first loop current sampling circuit and a second loop current sampling circuit; the first loop current sampling circuit and the second loop current sampling circuit are respectively connected to corresponding sampling ends so as to send corresponding sampling signals to the processing unit.
Specifically, through setting up first return circuit current sampling circuit and second return circuit current sampling circuit, can realize two way sampling, and then handle, contrast the signal in singlechip U1U1, play the check-up function, can improve the accuracy of signal sampling.
In this embodiment, referring to fig. 3, the first loop current sampling circuit includes: the first connector MT1, the first resistor R15, the second resistor R24, the third resistor R16, the fourth resistor R25, the first capacitor C3 and the second capacitor C4; one end of the first resistor R15 is connected with one end of the first connector MT1 and one end of the second resistor R24, the other end of the first resistor R15 is grounded, the other end of the second resistor R24 is connected with one end of the first capacitor C3 and the processing unit, and the other end of the first capacitor C3 is grounded; one end of the third resistor R16 is connected with the other end of the first connector MT1 and one end of the fourth resistor R25, the other end of the third resistor R16 is grounded, the other end of the fourth resistor R25 is connected with one end of the second capacitor C4 and the processing unit, and the other end of the second capacitor C4 is grounded; the first connector MT1 is adapted to access a corresponding sampling end.
Specifically, through setting up first connector MT1 and conveniently connecting the sampling end, the signal sampling of being convenient for, first resistance R15, third resistance R16 play the bleeder effect, guarantee the stability of sampling signal, and RC filter is constituteed to second resistance R24 and first electric capacity C3 simultaneously, and RC filter is constituteed to fourth resistance R25 and second electric capacity C4, plays signal filtering's effect, improves the precision of input singlechip U1U1 signal, and then guarantees the precision of testing result.
In this embodiment, referring to fig. 4, the second loop current sampling circuit includes: the second connector MT2, the fifth resistor R17, the sixth resistor R28, the seventh resistor R22, the eighth resistor R10, the third capacitor C15 and the fourth capacitor C16; one end of the fifth resistor R17 is connected to one end of the second connector MT2 and one end of the sixth resistor R28, the other end of the fifth resistor R17 is grounded, the other end of the sixth resistor R28 is connected to one end of the third capacitor C15 and the processing unit, and the other end of the third capacitor C15 is grounded; one end of the seventh resistor R22 is connected to the other end of the second connector MT2 and one end of the eighth resistor R10, the other end of the seventh resistor R22 is grounded, the other end of the eighth resistor R10 is connected to one end of the fourth capacitor C16 and the processing unit, and the other end of the fourth capacitor C16 is grounded; the second connector MT2 is adapted to access a corresponding sampling end.
Specifically, through setting up the sampling end that conveniently connects of second connector MT2, the signal sampling of being convenient for, fifth resistance R17, seventh resistance R22 play the bleeder effect, guarantee the stability of sampling signal, and RC filter is constituteed to sixth resistance R28 and third electric capacity C15 simultaneously, and RC filter is constituteed to eighth resistance R10 and fourth electric capacity C16, plays the effect of signal filtering, improves the precision of input singlechip U1U1 signal, and then guarantees the precision of testing result.
In this embodiment, referring to fig. 5, the voltage sampling unit includes: a voltage sampling circuit; the voltage sampling circuit is provided with a ninth resistor R26, a tenth resistor R27, a fifth capacitor C16 and a sixth capacitor C14; one end of the ninth resistor R26 is connected with the processing unit and one end of the fifth capacitor C16, the other end of the ninth resistor R26 is grounded, and the other end of the fifth capacitor C16 is grounded; one end of the tenth resistor R27 is connected with the processing unit and one end of the sixth capacitor C14, the other end of the tenth resistor R27 is grounded, and the other end of the sixth capacitor C14 is grounded.
Specifically, the ninth resistor R26 and the fifth capacitor C16 form an RC filter, the tenth resistor R27 and the sixth capacitor C14 form an RC filter, the effect of signal filtering is achieved, the precision of the input single-chip microcomputer U1U1 signal is improved, and the precision of the detection result is further guaranteed.
Specifically, the current signal and the voltage signal are detected simultaneously, so that the diversity of the detection signals can be improved, meanwhile, the current signal and the voltage signal can be mutually checked, on one hand, the detection precision is improved, and on the other hand, the detection safety is ensured.
In this embodiment, referring to fig. 6 to 8, the output control unit includes: the first relay driving chip comprises a first connector KZ2, a second relay driving chip U6 and a third connector KZ 2; the first relay driving chip U6 and the second relay driving chip are electrically connected with the processing unit, and the first relay driving chip U6 and the second relay driving chip are electrically connected with the third connector KZ 2; the third connector KZ2 is adapted to access a corresponding relay.
Specifically, through setting up third connector KZ2 and conveniently connecting the relay, be convenient for line connection and control, set up relay driver chip one U6 simultaneously, relay driver chip two, solve the big problem of relay individual control risk, can improve fault-tolerant, guarantee the power consumption safety.
In this embodiment, referring to fig. 9, the communication unit includes: the RS485 transceiver U8 relay drives a second chip; u7; the RS485 transceiver U8 relay drives a second chip; the U7 is electrically connected with the processing unit.
Specifically, an RS485 transceiver U8 relay drives a second chip; u7 can be electrically isolated by optocoupler IC3, optocoupler IC4, and optocoupler IC 5.
In this embodiment, referring to fig. 10, the display unit includes: a display screen LCD; the display screen LCD is electrically connected with the processing unit.
Specifically, the display screen LCD employs a liquid crystal display.
In this embodiment, referring to fig. 12, the metering module further includes: and the power supply unit is used for supplying power to the processing unit, the current sampling unit, the voltage sampling unit, the output control unit, the communication unit and the display unit.
Specifically, the power supply unit is connected to a power supply through N1 and L1, and stable power supply is realized through the voltage stabilizing chip.
Embodiment 2, on the basis of embodiment 1, as shown in fig. 1 to 14, the present embodiment provides a pluggable metering device, which includes: a housing 1, an upper cover 2, a plug head 3 and a metering module as provided in example 1; wherein an installation cavity is formed in the shell 1 and is used for installing the metering module; the top opening of the shell 1 is buckled with the upper cover 2 so as to limit the plug 3 between the shell 1 and the upper cover 2; the plug head 3 is provided with a plurality of connection terminals 301, and each connection terminal 301 is electrically connected with the metering module.
Specifically, the shell 1 is provided with the buckling hole 101 and the clamping groove 102, the upper cover 2 is provided with the buckle 201 and the limiting plate 202, the plug 3 is provided with the clamping head 302, the upper cover 2 is buckled into the buckling hole 101 of the shell 1 through the buckle 201 so as to fix the shell 1 and the upper cover 2, the clamping groove 102 and the limiting plate 202 can position and limit the clamping head 302, on one hand, the plug 3 is fixed, and on the other hand, the connecting terminal 301 in the plug 3 is abutted with the metering module.
In summary, the current sampling unit and the voltage sampling unit sample the current signal and the voltage signal at the same time, so that various parameters of electric equipment can be monitored in real time, and meanwhile, the current sampling unit is provided with two paths of current sampling, so that sampling results can be synchronously compared, the detection precision is improved, and the output control unit adopts two paths of output control relays, so that the fault tolerance is improved, and the electricity safety is further improved.
The components (components not illustrating the specific structure) selected in the present application are common standard components or components known to those skilled in the art, and the structures and principles thereof are known to those skilled in the art through technical manuals or through routine experimental methods. Moreover, the software program related to the application is the prior art, and the application does not relate to any improvement on the software program.
In the description of embodiments of the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the several embodiments provided by the present application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. The above-described apparatus embodiments are merely illustrative, for example, the division of the units is merely a logical function division, and there may be other manners of division in actual implementation, and for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be through some communication interface, device or unit indirect coupling or communication connection, which may be in electrical, mechanical or other form.
The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in the embodiments of the present utility model may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit.
With the above-described preferred embodiments according to the present utility model as an illustration, the above-described descriptions can be used by persons skilled in the relevant art to make various changes and modifications without departing from the scope of the technical idea of the present utility model. The technical scope of the present utility model is not limited to the description, but must be determined according to the scope of claims.
Claims (10)
1. A metering module, comprising:
The device comprises a processing unit, a current sampling unit, a voltage sampling unit, an output control unit, a communication unit and a display unit; wherein the method comprises the steps of
The current sampling unit, the voltage sampling unit, the output control unit, the communication unit and the display unit are electrically connected with the processing unit;
The current sampling unit and the voltage sampling unit are suitable for being connected with corresponding sampling ends so as to send corresponding sampling signals to the processing unit;
the processing unit is suitable for controlling the action of the corresponding relay through the output control unit;
The processing unit is suitable for carrying out data interaction with external equipment through the communication unit; and
The processing unit is adapted to display data via the display unit.
2. The metering module of claim 1 wherein the metering module,
The current sampling unit includes: a first loop current sampling circuit and a second loop current sampling circuit;
The first loop current sampling circuit and the second loop current sampling circuit are respectively connected to corresponding sampling ends so as to send corresponding sampling signals to the processing unit.
3. The metering module of claim 2 wherein the metering module,
The first loop current sampling circuit includes: the first connector, the first resistor, the second resistor, the third resistor, the fourth resistor, the first capacitor and the second capacitor;
One end of the first resistor is connected with one end of the first connector and one end of the second resistor, the other end of the first resistor is grounded, the other end of the second resistor is connected with one end of the first capacitor and the processing unit, and the other end of the first capacitor is grounded;
One end of the third resistor is connected with the other end of the first connector and one end of the fourth resistor, the other end of the third resistor is grounded, the other end of the fourth resistor is connected with one end of the second capacitor and the processing unit, and the other end of the second capacitor is grounded;
The first connector is suitable for being connected with a corresponding sampling end.
4. The metering module of claim 2 wherein the metering module,
The second loop current sampling circuit includes: a second connector, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a third capacitor and a fourth capacitor;
one end of the fifth resistor is connected with one end of the second connector and one end of the sixth resistor, the other end of the fifth resistor is grounded, the other end of the sixth resistor is connected with one end of the third capacitor and the processing unit, and the other end of the third capacitor is grounded;
One end of the seventh resistor is connected with the other end of the second connector and one end of the eighth resistor, the other end of the seventh resistor is grounded, the other end of the eighth resistor is connected with one end of the fourth capacitor and the processing unit, and the other end of the fourth capacitor is grounded;
The second connector is suitable for being connected with a corresponding sampling end.
5. The metering module of claim 1 wherein the metering module,
The voltage sampling unit includes: a voltage sampling circuit;
the voltage sampling circuit is provided with a ninth resistor, a tenth resistor, a fifth capacitor and a sixth capacitor;
One end of the ninth resistor is connected with the processing unit and one end of the fifth capacitor, the other end of the ninth resistor is grounded, and the other end of the fifth capacitor is grounded;
One end of the tenth resistor is connected with the processing unit and one end of the sixth capacitor, the other end of the tenth resistor is grounded, and the other end of the sixth capacitor is grounded.
6. The metering module of claim 1 wherein the metering module,
The output control unit includes: the first relay driving chip and the second relay driving chip are connected with the first connector;
The relay driving chip I and the relay driving chip II are electrically connected with the processing unit, and the relay driving chip I and the relay driving chip II are electrically connected with the third connector;
the third connector is adapted to access a corresponding relay.
7. The metering module of claim 1 wherein the metering module,
The communication unit includes: an RS485 transceiver;
The RS485 transceiver is electrically connected with the processing unit.
8. The metering module of claim 1 wherein the metering module,
The display unit includes: a display screen;
The display screen is electrically connected with the processing unit.
9. The metering module of claim 1, further comprising:
And the power supply unit is used for supplying power to the processing unit, the current sampling unit, the voltage sampling unit, the output control unit, the communication unit and the display unit.
10. A plug-in metering device, comprising:
a housing, an upper cover, a plug head and a metering module according to any of claims 1 to 9; wherein the method comprises the steps of
An installation cavity is formed in the shell and used for installing the metering module;
the upper cover is buckled on the top opening so as to limit the plug head between the shell and the upper cover;
the plug head is provided with a plurality of wiring terminals, and each wiring terminal is electrically connected with the metering module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323057074.2U CN221261106U (en) | 2023-11-13 | 2023-11-13 | Metering module and plug-in metering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323057074.2U CN221261106U (en) | 2023-11-13 | 2023-11-13 | Metering module and plug-in metering device |
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| CN221261106U true CN221261106U (en) | 2024-07-02 |
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| CN202323057074.2U Active CN221261106U (en) | 2023-11-13 | 2023-11-13 | Metering module and plug-in metering device |
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