CN218974576U - Double-core ammeter metering module detection tool - Google Patents
Double-core ammeter metering module detection tool Download PDFInfo
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- CN218974576U CN218974576U CN202223050620.5U CN202223050620U CN218974576U CN 218974576 U CN218974576 U CN 218974576U CN 202223050620 U CN202223050620 U CN 202223050620U CN 218974576 U CN218974576 U CN 218974576U
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Abstract
The utility model discloses a detection tool for a metering module of a double-core ammeter, which comprises the following components: the first interface is arranged at one end of the tooling circuit board and is used for being connected with a metering module or a management module of the to-be-tested double-core ammeter; the second interface is arranged at one end of the tooling circuit board, which is not the first interface, and comprises a plurality of functional sockets for being connected with an ammeter calibration table; the tool circuit board comprises a control chip, a plurality of pulse output circuits and a communication conversion circuit, wherein the pulse output circuits and the communication conversion circuit are connected with the functional sockets. Various pulse output interfaces and RS485 interfaces are derived through the tool circuit board, so that the error of a metering module or the function detection of a management module can be checked by the existing ammeter checking platform, the interface conversion of the metering module or the management module of the to-be-tested double-core ammeter is realized through the tool circuit board, the metering module or the management module is further detected by the ammeter checking platform, the conventional ammeter checking platform is effectively utilized, and the cost is greatly reduced.
Description
Technical Field
The utility model particularly relates to a detection tool for a metering module of a double-core ammeter.
Background
The dual-core intelligent ammeter scheme based on the IR46 standard of the national power grid company divides ammeter functions into two independent parts of a metering core (metering module) and a management core (management module) which are not mutually interfered.
The metering module is used for performing the functions of metering, electric quantity data storage, RTC timing and the like, and independently operating, authenticating by a law and not allowing software to be upgraded.
The management module part comprises the functions of data processing, ESAM, display, memory, load control management, external communication and the like.
The ammeter meets the modular design requirement, the ammeter complete machine is composed of a metering module, a management module and an expansion module, and each module is structurally independent. Besides the metering modules, other modules are connected through connectors, support the operation of electric heating plug-in operation, and have failure protection circuits, namely, when the management or expansion modules are not connected, connected or replaced, the performance, the operation parameters and the normal metering of the electric energy meter are not affected.
Because the dual-core ammeter does not have a pulse output terminal and an RS485 output terminal, pulse signals are output only through the Bluetooth communication module, the active pulse indicator lamp and the multifunctional multiplexing indicator lamp in the management module, and the dual-core ammeter is used for error checking. The active pulse indicator lamp and the multifunctional multiplexing indicator lamp adopt optical signal output, the multiplexing setting of the indicator lamp is also involved, and the error efficiency is very low. Radio signals such as second pulse, reactive pulse, active pulse, harmonic pulse and the like are sent through Bluetooth modulation and used for error checking, the requirements on software and hardware of an ammeter checking platform are high, a Bluetooth pulse checking technology is required to be supported, the delay of signals after Bluetooth pulse conversion is less than 10ms compared with that of original electric signals, and error jump caused by Bluetooth signal conversion is less than 0.03%.
The existing ammeter calibration stand can not meet the requirements, and the calibration stand supporting the Bluetooth pulse verification technology is required to be purchased again, so that the fund investment is large, and the existing ammeter calibration stand is idle and wasteful.
Disclosure of Invention
Aiming at the defects in the prior art, the utility model aims to provide a double-core ammeter metering module detection tool.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
a dual-core ammeter metering module detects frock, it includes:
the first interface is arranged at one end of the tooling circuit board and is used for being connected with a metering module or a management module of the to-be-tested double-core ammeter;
the second interface is arranged at one end of the tooling circuit board, which is not the first interface, and comprises a plurality of functional sockets for being connected with an ammeter calibration table;
the tool circuit board comprises a control chip, a plurality of pulse output circuits and a communication conversion circuit, wherein the pulse output circuits and the communication conversion circuit are connected with the functional sockets.
The first interface is a socket matched with a contact pin connected with a metering module or a management module of the to-be-tested double-core ammeter.
The second interface comprises a forward harmonic power pulse port, a reverse harmonic power pulse port, a second output pulse port, an active power pulse port and a plurality of RS485 interfaces.
The pulse output circuit is an optical coupling isolation circuit.
The communication conversion circuit is an RS485 communication circuit.
The tool circuit board is also provided with a power circuit.
The tool circuit board is also provided with a storage circuit.
The tool circuit board is also provided with a display circuit.
The tool circuit board is also provided with a Bluetooth module.
The tool circuit board is also provided with a BLE-UART interface.
The utility model has the beneficial effects that: various pulse output interfaces and RS485 interfaces are derived through the tool circuit board, so that the error of a metering module or the function detection of a management module can be checked by the existing ammeter checking platform, the interface conversion of the metering module or the management module of the to-be-tested double-core ammeter is realized through the tool circuit board, the metering module or the management module is further detected by the ammeter checking platform, the conventional ammeter checking platform is effectively utilized, and the cost is greatly reduced.
Drawings
Fig. 1 is a schematic circuit diagram of a pulse output circuit according to the present utility model.
Fig. 2 is a schematic circuit diagram of a communication conversion circuit.
Fig. 3 is a schematic circuit diagram of a power supply circuit.
Fig. 4 is a schematic circuit diagram of the first interface.
Fig. 5 is a schematic circuit diagram of the indicator circuit.
Fig. 6 is a schematic circuit diagram of a bluetooth module.
Fig. 7 is a circuit schematic of an external data storage circuit.
Fig. 8 is a schematic circuit diagram of a BLE-UART interface.
Fig. 9 is a schematic circuit diagram showing a circuit.
Fig. 10 is a circuit schematic of an internal data storage circuit.
Fig. 11 is a schematic circuit diagram of an operating key.
Fig. 12 is a schematic circuit diagram of a control chip.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. 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.
It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present utility model are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.
As shown in the figure, the utility model discloses a detection tool for a metering module of a double-core ammeter, which comprises the following components:
the first interface is arranged at one end of the tooling circuit board and is used for being connected with a metering module or a management module of the to-be-measured double-core ammeter, and the first interface is a socket which is matched with a contact pin connected with the metering module or the management module of the to-be-measured double-core ammeter, wherein the first interface is connected with the metering module in a 2X 8 interval 2.54mm double-row contact pin way in a plugging manner;
the second interface is arranged at one end of the tooling circuit board, which is not the first interface, and comprises a plurality of functional sockets for being connected with an ammeter calibration table, wherein the second interface comprises a forward harmonic power pulse port, a reverse harmonic power pulse port, a second output pulse port, an active power pulse port and a plurality of RS485 interfaces, and the second interfaces are independently arranged and are arranged side by side;
the tool circuit board comprises a control chip, a plurality of pulse output circuits and a communication conversion circuit, wherein the pulse output circuits and the communication conversion circuit are connected with the functional sockets, and signals such as second pulse, reactive pulse, active pulse, harmonic pulse and the like are led out to the tool pulse signal output terminal through optical coupling isolation, so that the error check of the metering module can be performed by the conventional ammeter check table.
The pulse output circuit is an optical coupler isolation circuit, is 4 paths and is respectively connected with a forward harmonic power pulse port, a reverse harmonic power pulse port, a second output pulse port and an active power pulse port, isolation is realized by arranging optical couplers, and signals of a metering module of the to-be-tested double-core ammeter are respectively converted into pulse signals by the four optical couplers.
The communication conversion circuit is an RS485 communication circuit, the RS485 communication circuit is divided into two paths, one path is directly connected with the first interface, is directly converted into an RS485 port through a UART port of the metering module, and the other path is connected with the control chip and is converted into the RS485 port by the control chip.
The tool circuit board is also provided with a power supply circuit, and the power supply circuit comprises a multi-path voltage reduction circuit which can convert 15V into a plurality of voltages and meet the power supply requirement of each circuit of the tool circuit board. The power supply circuit comprises at least three paths, wherein one path converts 15V input voltage into 5.7V voltage through a voltage stabilizing chip, the other path converts 5.7V voltage into VDD required by a display circuit, a pulse output circuit and a communication conversion circuit and VCC required by other circuits, and the third path converts VDD into 3.5V for each interface to supply power, so that the power supply requirement of each component is met.
The tool circuit board is further provided with a storage circuit, and the storage circuit comprises an external data storage circuit and an internal data storage circuit, wherein the external data storage circuit is reserved.
The tooling circuit board is also provided with a display circuit, and the display circuit is a dot matrix display circuit.
The multifunctional indicator lamp is also provided with two indicating circuits, wherein one indicating circuit is used for indicating active pulses, the other indicating circuit is connected with the multiplexing switch circuit, the multiplexing of the functions of the multifunctional indicator lamp LED_A is realized, and the multifunctional indicator lamp LED_A can be configured into 3 indicating functions, namely reactive power metering output, forward harmonic power metering output, reverse harmonic power metering output and second pulse output. The input pins of the multiplexing switch circuit are respectively connected with the input ends of the forward harmonic active pulse, the backward harmonic active pulse and the second pulse of the first interface, and different state indications are realized through switching.
The tool circuit board is also provided with a Bluetooth module, so that a conventional ammeter calibration table has the function of Bluetooth calibration, and the effect of expanding application is achieved.
The tool circuit board is further provided with a BLE-UART interface, and an operation key is further arranged for operating the tool circuit board.
The examples should not be construed as limiting the utility model, but any modifications based on the spirit of the utility model should be within the scope of the utility model.
Claims (10)
1. The utility model provides a two core ammeter measurement module detects frock which characterized in that: it comprises the following steps:
the first interface is arranged at one end of the tooling circuit board and is used for being connected with a metering module or a management module of the to-be-tested double-core ammeter;
the second interface is arranged at one end of the tooling circuit board, which is not the first interface, and comprises a plurality of functional sockets for being connected with an ammeter calibration table;
the tool circuit board comprises a control chip, a plurality of pulse output circuits and a communication conversion circuit, wherein the pulse output circuits and the communication conversion circuit are connected with the functional sockets.
2. The dual-core ammeter metering module detection tool as claimed in claim 1, wherein: the first interface is a socket matched with a contact pin connected with a metering module or a management module of the to-be-tested double-core ammeter.
3. The dual-core ammeter metering module detection tool as claimed in claim 1, wherein: the second interface comprises a forward harmonic power pulse port, a reverse harmonic power pulse port, a second output pulse port, an active power pulse port and a plurality of RS485 interfaces.
4. The dual-core ammeter metering module detection tool as claimed in claim 1, wherein: the pulse output circuit is an optical coupling isolation circuit.
5. The dual-core ammeter metering module detection tool as claimed in claim 1, wherein: the communication conversion circuit is an RS485 communication circuit.
6. The dual-core ammeter metering module detection tool as claimed in claim 1, wherein: the tool circuit board is also provided with a power circuit.
7. The dual-core ammeter metering module detection tool as claimed in claim 1, wherein: the tool circuit board is also provided with a storage circuit.
8. The dual-core ammeter metering module detection tool as claimed in claim 1, wherein: the tool circuit board is also provided with a display circuit.
9. The dual-core ammeter metering module detection tool as claimed in claim 1, wherein: the tool circuit board is also provided with a Bluetooth module.
10. The dual-core ammeter metering module detection tool as claimed in claim 1, wherein: and the tooling circuit board is also provided with a BLE-UART interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223050620.5U CN218974576U (en) | 2022-11-17 | 2022-11-17 | Double-core ammeter metering module detection tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223050620.5U CN218974576U (en) | 2022-11-17 | 2022-11-17 | Double-core ammeter metering module detection tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218974576U true CN218974576U (en) | 2023-05-05 |
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ID=86157223
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223050620.5U Active CN218974576U (en) | 2022-11-17 | 2022-11-17 | Double-core ammeter metering module detection tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218974576U (en) |
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2022
- 2022-11-17 CN CN202223050620.5U patent/CN218974576U/en active Active
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