CN217467146U - Clamp meter switching system - Google Patents
Clamp meter switching system Download PDFInfo
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- CN217467146U CN217467146U CN202220224271.5U CN202220224271U CN217467146U CN 217467146 U CN217467146 U CN 217467146U CN 202220224271 U CN202220224271 U CN 202220224271U CN 217467146 U CN217467146 U CN 217467146U
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- 230000006870 function Effects 0.000 description 15
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- 230000002457 bidirectional effect Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
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- 230000005540 biological transmission Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
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Abstract
The utility model provides a clamp meter switching system, which belongs to the technical field of clamp meters and comprises a clamp meter and equipment; the clamp meter comprises: the first connecting module is connected with the storage module; a storage module configured to store at least one clamp meter type and a corresponding calibration coefficient; the apparatus comprises: a second connection module connected to the first connection module; a main control module; the main control module is connected with the second connecting module and is used for controlling the system to operate and calibrating the sampling signal; and the sampling module is connected with the main control module and the second connecting module and is used for sampling signals. The system avoids the technical problems of more calibration points, complex operation and time consumption when the clamp meter of the conventional equipment is replaced. And the operation is convenient, the work can be changed at will according to actual work requirements, the work progress is not influenced, and the work efficiency is improved.
Description
Technical Field
The utility model relates to a tong-type ammeter technical field especially relates to a tong-type ammeter switched systems.
Background
When the clamp meter of the existing equipment is damaged and needs to be replaced, the whole equipment can be recalibrated only by connecting a new clamp meter with the equipment.
When the clamp meter is replaced, the equipment needs to be recalibrated, the calibration needs a stable power environment and a high-precision standard meter, the number of calibration points is large, and the operation is complex and time-consuming. The existing clamp meter and equipment are bound with each other and cannot be interchanged, and when the existing clamp meter and equipment are damaged in field use, the existing clamp meter cannot continuously work.
SUMMERY OF THE UTILITY MODEL
Based on the above, the utility model provides a clamp meter switching system, which solves the problems of complicated calibration operation and time consumption when the clamp meter is replaced by the existing equipment; or the problem that the verification is needed when the equipment is not determined to be matched with the clamp meter.
The embodiment of the utility model provides a clamp meter switching system, the system includes clamp meter and equipment;
the clamp meter comprises:
the first connecting module is connected with the storage module;
a storage module configured to store at least one clamp meter type and a corresponding calibration coefficient;
the apparatus comprises:
a second connection module connected to the first connection module;
the main control module is connected with the second connecting module and is used for controlling the system to operate and calibrating the sampling signals;
and the sampling module is connected with the main control module and the second connecting module and is used for sampling signals.
Further, the storage module includes:
the single-chip microcomputer with the storage function is connected to the other ends of the first resistor and the second resistor.
Furthermore, the device also comprises a power supply module which is connected with the main control module and the sampling module and supplies power to the main control module and the sampling module.
Further, the main control module comprises:
the main control chip is used for controlling other modules to operate and calibrating the sampling signals;
the power supply module is connected with the main control chip and the power supply module and used for converting the voltage provided by the power supply module into the working voltage of the main control chip;
the data channel module is connected with the sampling module and the main control chip, and is used for the communication between the main control chip and the sampling module so that the main control chip can read the sampling data of the sampling module;
and the external interface module is connected with the main control chip and the second connecting module and used for driving the second connecting module to communicate with an external communication port by the main control chip and reading the information of the storage module.
Further, the sampling module includes:
the relay control module is connected with the main control chip and controls the voltage sampling module and the current sampling module to switch gears;
the voltage sampling module is connected with the second connecting module and used for sampling a voltage signal and transmitting the voltage signal to the analog-to-digital conversion module;
the current sampling module is connected with the second connecting module and used for sampling a current signal and transmitting the current signal to the analog-to-digital conversion module;
and the analog-to-digital conversion module is used for comparing the voltage signal with the current signal to reference voltage, converting the input analog signal into a digital signal and transmitting the digital signal to the main control chip.
Further, the first connection module comprises a first connection end, a second connection end, a third connection end and a fourth connection end; the second connecting module comprises a fifth connecting end, a sixth connecting end, a seventh connecting end and an eighth connecting end;
the first connecting end, the second connecting end, the third connecting end and the fourth connecting end are all connected with the single chip microcomputer with the storage function; one end of the first resistor is connected between the second connecting end and the singlechip with the storage function, and the other end of the first resistor is connected between the fourth connecting end and the singlechip with the storage function; one end of the second resistor is connected between the third connecting end and the singlechip with the storage function, and the other end of the second resistor is connected between the fourth connecting end and the singlechip with the storage function;
the fifth connecting end is connected with a power supply; the sixth connecting end is connected with the main control module and the second connecting end; the seventh connecting end is connected with the main control module and the third connecting end; the eighth connecting end is grounded and connected with the fourth connecting end.
Further, the first connection module and the second connection module are pluggable.
Furthermore, the device also comprises a display module, wherein the display module is connected with the main control module and used for displaying the information of the main control module.
The embodiment of the utility model provides a clamp meter switching system and method, through set up the storage module in the clamp meter, store at least one clamp meter type and corresponding calibration coefficient; then set up host system and sampling module in equipment, through first connecting module and second connecting module with tong table and equipment connection, host system follows memory module reads tong table type and the calibration coefficient that corresponds, then sampling module gathers the signal to signal transmission to host system will gather, then host system calibrates the sampling signal through the calibration coefficient, and then accomplishes the equipment calibration, when having avoided the tong table of present equipment to change, calibration point is more, the complicated and time-consuming technical problem of operation. And the operation is convenient, the replacement can be carried out at will according to the actual work requirement, the work progress is not influenced, and the work efficiency is improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic diagram of a clamp meter switching system according to a first embodiment of the present invention;
fig. 2 is a schematic view of an actual application of a clamp meter switching system according to a first embodiment of the present invention;
fig. 3 is a schematic view of a clamp meter switching system according to a first embodiment of the present invention;
fig. 4 is a schematic view of a clamp meter switching system according to a first embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the present invention, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These terms are used primarily to better describe the invention and its embodiments, and are not intended to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.
Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in the present invention can be understood by those of ordinary skill in the art as appropriate.
Furthermore, the terms "mounted," "disposed," "provided," "connected," and "connected" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
Moreover, the terms "first," "second," and the like, are used primarily to distinguish one device, element, or component from another (the specific type and configuration may or may not be the same), and are not used to indicate or imply the relative importance or number of the indicated devices, elements, or components. "plurality" means two or more unless otherwise specified.
As shown in fig. 1, a schematic diagram of a clamp meter switching system according to an embodiment of the present invention is provided, and as shown in the figure, the system includes a clamp meter 1 and a device 2; the clamp meter 1 includes: the first connection module 11, the first connection module 11 is connected with the storage module 12; a storage module 12, wherein the storage module 12 is configured to store at least one clamp table type and a corresponding calibration coefficient; the apparatus 2 comprises: a second connection module 21, wherein the second connection module 21 is connected with the first connection module 11; a main control module 22; the main control module 22 is connected to the second connection module 21, and is configured to control the system to operate and calibrate a sampling signal; and the sampling module 23 is connected with the main control module 22 and the second connection module 21 and is used for sampling signals.
At least one clamp meter type and a calibration coefficient after each clamp meter type precision test are stored in the storage module 12 of the clamp meter 1. Before delivery, the small current measurement of the clamp meter socket is calibrated to ensure the measurement accuracy of the device 2. The master control module 22 of the device 2 reads the clamp meter type and the corresponding calibration coefficient of the storage module 12 in the clamp meter 1 in each reading period, the sampling module 23 of the device 2 collects signals and transmits the collected signals to the master control module 22, and the master control module 22 performs data calibration according to the read calibration coefficient, so that the calibration of the device 2 is realized. The type of the clamp meter 1 and the calibration coefficient corresponding to the type can be selected according to actual needs, and switching can be performed at will, so that the problems that in the prior art, when the clamp meter is switched, calibration points are more, operation is complex and time is consumed are solved. And the operation is convenient, the working progress is not influenced, and the working efficiency is improved.
As shown in fig. 2, the embodiment of the present invention provides a practical application diagram of a clamp meter switching system, the storage module 12 includes a first resistor R1, a second resistor R2 and a single chip microcomputer with a storage function, one end of the first resistor R1 and one end of the second resistor R2 are connected to the first connection module 11, and the other end of the first resistor R1 and the other end of the second resistor R2 are connected to the single chip microcomputer with the storage function.
In this embodiment, the one-chip microcomputer with a storage function selects an AT24C512C chip, and the AT24C512 is a 512K-bit (64K × 8 bit) serial large-capacity electrically erasable programmable memory EEPROM recently produced by ATMEL corporation. The main characteristics are as follows: has the following three working voltages: 5.0V; 2.7V; 1.8V; the interior may be organized into 64k by 8 memory cells; conforms to the bidirectional data transmission I2C protocol; the method has the functions of hardware write protection and software data protection; with a write per page (128 bytes) or read-write per byte mode. The AT24C512 has eight pins. A0, A1: an address selection input terminal. In the serial bus structure, if 4 AT24C512 chips are required to be connected, A0 and A1 can be used for distinguishing the chips; and (2) SCL: a serial clock input, which typically writes data on the SDA to the memory on its rising edge, and reads data from the memory on its falling edge and to the SDA; SDA: the bidirectional serial data input and output port is used for data exchange between the memory and the singlechip; WP: a write protect input that allows write operations when the pin is connected to ground; when connected to VCC, all write memory operations are disabled, and if not, the pin will be pulled down to ground internally in the chip.
Further, the first connection module 11 includes a first connection end a, a second connection end B, a third connection end C, and a fourth connection end D; the second connection module 21 comprises a fifth connection end E, a sixth connection end F, a seventh connection end G and an eighth connection end H;
the first connecting end A, the second connecting end B, the third connecting end C and the fourth connecting end D are all connected with the single chip microcomputer with the storage function; one end of the first resistor R1 is connected between the second connecting end B and the singlechip with the storage function, and the other end of the first resistor R1 is connected between the fourth connecting end D and the singlechip with the storage function; one end of the second resistor R2 is connected between the third connecting end C and the singlechip with the storage function, and the other end of the second resistor R2 is connected between the fourth connecting end D and the singlechip with the storage function.
Namely, the first connecting end a is connected with GND, NC and a1 pins of the AT24C512 chip, the second connecting end B is connected with an SDA pin of the AT24C512 chip, the third connecting end C is connected with an SCL pin of the AT24C512 chip, the fourth connecting end D is connected with WP, VCC and a0 pins of the AT24C512 chip, one end of the first resistor R1 is connected between the second connecting end B and an SDA pin of the AT24C512 chip, and the other end is connected between the fourth connecting end D and WP and VCC pins of the AT24C512 chip; one end of the second resistor R2 is connected between the third connection end and the SCL pin of the AT24C512 chip, and the other end is connected between the fourth connection end D and the WP and VCC pin of the AT24C512 chip; since the data pin of the AT24C512C chip is in an open-drain state and is not driven by power, the external pull-up resistor R1 and the external pull-up resistor R2 provide voltage for the AT24C512C chip.
The fifth connecting end E is connected with a power supply VCC; the sixth connection end F is connected to the main control module 22 and the second connection end B; the seventh connection end G is connected to the main control module 22 and the third connection end C; the eighth connecting end H is grounded and connected to the fourth connecting end D.
Further, the first connection module 11 and the second connection module 12 are pluggable. So that the transportation and the use of the utility model are more convenient and quicker.
As shown in fig. 3, the embodiment of the present invention provides a clamp meter switching system schematic diagram, the device 2 further includes a power module 24, and the main control module 22 and the sampling module 23 are connected, for the main control module 22 and the sampling module 23 supply power.
As shown in fig. 4, the embodiment of the present invention provides a clamp meter switching system schematic diagram, the main control module 22 includes: the main control chip 221 is used for controlling other modules to operate and calibrating the sampling signals; the power supply module 222 is connected to the main control chip 221 and the power supply module 24, and is configured to convert a voltage provided by the power supply module 24 into a working voltage of the main control chip 221; a data channel module 223 connected to the sampling module 23 and the main control chip 221, configured to communicate between the main control chip 221 and the sampling module 23, so that the main control chip 221 can read sampling data of the sampling module 23; and the external interface module 224 is connected with the main control chip 221 and the second connection module 21, and is configured to drive the second connection module 21 to communicate with an external communication port by the main control chip 221, and read information of the storage module 12.
The sampling module 23 includes: the relay control module 231 is connected with the main control chip 221 and controls the voltage sampling module 232 and the current sampling module 233 to switch gears; since signal sampling is not completely linear, multiple gears are set to ensure sampling accuracy of the device. An upshift is performed when the measured value is greater than 120% of the current gear and a downshift is performed when the measured value is less than 110% of the previous gear. The voltage sampling module 232 is connected with the second connection module 21, and is configured to sample a voltage signal and transmit the voltage signal to the analog-to-digital conversion module 234; the current sampling module 233 is connected to the second connection module 21, and is configured to sample a current signal and transmit the current signal to the analog-to-digital conversion module 234; the analog-to-digital conversion module 234 compares the voltage signal with the current signal to a reference voltage, converts the input analog signal into a digital signal, and transmits the digital signal to the main control chip 221.
The device 2 further comprises a display module 24 (not shown in the figure), wherein the display module 24 is connected with the main control module 22 and is used for displaying the information of the main control module 22.
The tong-type ammeter interchange system disclosed by the embodiment of the utility model is described in detail, a specific example is applied to explain the principle and the implementation mode of the utility model, and the description of the embodiment is only used for helping to understand the tong-type ammeter interchange system and the core idea thereof; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the specific implementation and application scope, and in summary, the content of the present specification should not be understood as the limitation of the present invention.
Claims (8)
1. The clamp meter switching system is characterized by comprising a clamp meter and equipment;
the clamp meter comprises:
the first connection module is connected with the storage module;
a storage module configured to store at least one clamp meter type and a corresponding calibration coefficient;
the apparatus comprises:
a second connection module connected to the first connection module;
the main control module is connected with the second connecting module and is used for controlling the system to operate and calibrating the sampling signal;
and the sampling module is connected with the main control module and the second connecting module and is used for sampling signals.
2. The clamp meter switching system according to claim 1, wherein the storage module comprises:
the single-chip microcomputer with the storage function is connected to the other ends of the first resistor and the second resistor.
3. The clamp meter switching system according to claim 2, wherein the device further comprises a power module, connected to the main control module and the sampling module, for supplying power to the main control module and the sampling module.
4. The clamp meter switching system according to claim 3, wherein the main control module comprises:
the main control chip is used for controlling other modules to operate and calibrating the sampling signals;
the power supply module is connected with the main control chip and the power supply module and used for converting the voltage provided by the power supply module into the working voltage of the main control chip;
the data channel module is connected with the sampling module and the main control chip, and is used for the communication between the main control chip and the sampling module so that the main control chip can read the sampling data of the sampling module;
and the external interface module is connected with the main control chip and the second connecting module and used for driving the second connecting module to communicate with an external communication port by the main control chip and reading the information of the storage module.
5. The clamp meter switching system according to claim 4, wherein the sampling module comprises:
the relay control module is connected with the main control chip and controls the voltage sampling module and the current sampling module to switch gears;
the voltage sampling module is connected with the second connecting module and used for sampling a voltage signal and transmitting the voltage signal to the analog-to-digital conversion module;
the current sampling module is connected with the second connecting module and used for sampling a current signal and transmitting the current signal to the analog-to-digital conversion module;
and the analog-to-digital conversion module is used for comparing the voltage signal with the current signal to reference voltage, converting the input analog signal into a digital signal and transmitting the digital signal to the main control chip.
6. The system for switching the clamp meters according to claim 2, wherein the first connection module comprises a first connection end, a second connection end, a third connection end and a fourth connection end; the second connecting module comprises a fifth connecting end, a sixth connecting end, a seventh connecting end and an eighth connecting end;
the first connecting end, the second connecting end, the third connecting end and the fourth connecting end are all connected with the singlechip with the storage function; one end of the first resistor is connected between the second connecting end and the singlechip with the storage function, and the other end of the first resistor is connected between the fourth connecting end and the singlechip with the storage function; one end of the second resistor is connected between the third connecting end and the singlechip with the storage function, and the other end of the second resistor is connected between the fourth connecting end and the singlechip with the storage function;
the fifth connecting end is connected with a power supply; the sixth connecting end is connected with the main control module and the second connecting end; the seventh connecting end is connected with the main control module and the third connecting end; the eighth connecting end is grounded and connected with the fourth connecting end.
7. The clamp meter switching system according to claim 6, wherein the first connection module is pluggable to the second connection module.
8. The clamp meter switching system according to any one of claims 1 to 7, wherein the device further comprises a display module, and the display module is connected to the main control module and configured to display information of the main control module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220224271.5U CN217467146U (en) | 2022-01-26 | 2022-01-26 | Clamp meter switching system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220224271.5U CN217467146U (en) | 2022-01-26 | 2022-01-26 | Clamp meter switching system |
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| Publication Number | Publication Date |
|---|---|
| CN217467146U true CN217467146U (en) | 2022-09-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220224271.5U Active CN217467146U (en) | 2022-01-26 | 2022-01-26 | Clamp meter switching system |
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| CN (1) | CN217467146U (en) |
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- 2022-01-26 CN CN202220224271.5U patent/CN217467146U/en active Active
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