CN213023307U - Sensor signal conversion device - Google Patents
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- CN213023307U CN213023307U CN202021545184.7U CN202021545184U CN213023307U CN 213023307 U CN213023307 U CN 213023307U CN 202021545184 U CN202021545184 U CN 202021545184U CN 213023307 U CN213023307 U CN 213023307U
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Abstract
The utility model provides a sensor signal conversion equipment, including power module and current-voltage conversion module, current sensor is connected to power module for supply power for current sensor, be connected with current-voltage conversion module between current sensor's the output and power analyzer's the input, current-voltage conversion module converts current sensor's output current signal into voltage signal. The utility model discloses a current sensor designs, has realized the conversion of current sensor output current signal to voltage signal, perfect butt joint power analyzer. The conversion ratio can be flexibly configured to adapt to the output of different current sensors. Meanwhile, the device can provide a power supply for the current sensor.
Description
Technical Field
The utility model belongs to the technical field of the current sensor switching, specifically relate to a sensor signal conversion equipment.
Background
At present, power analyzers at home and abroad can only be matched with current sensors at home, but a plurality of manufacturers of the current sensors, such as Lyme and French CA, are available on the market and can be used as the current sensors independently. It is difficult to match power analyzers with current sensors from different manufacturers in terms of matching problems of power analyzers.
At present, most current transformers are used in current-to-voltage conversion schemes at home and abroad. The alternating current or direct current of the main circuit to be tested can be directly converted into a standard signal of a DC 4-20 mA constant current loop which is output according to a linear proportion, and the standard signal is continuously transmitted to a receiving device (such as a computer or a display instrument). The current transducer only carries out transformation ratio output on the current, and the power supply of the sensor is not additionally provided. And the ac transmitter and the dc transmitter are separate. The existing current-to-voltage conversion products are mostly applied to various industrial current online isolation detection systems, the current-to-voltage conversion products are not used for transmitting of a current sensor, most of the precision is about 0.2%, and the current sensor is not additionally supplied with power by equipment.
SUMMERY OF THE UTILITY MODEL
Connect the power analyzer interface problem of mismatching in order to solve current sensor, the utility model provides a sensor signal conversion equipment.
In order to achieve the technical purpose, the utility model discloses a specific technical scheme as follows:
the sensor signal conversion device comprises a current-voltage conversion module, wherein the current-voltage conversion module is connected between the output end of the current sensor and the input end of the power analyzer, and converts the output current signal of the current sensor into a voltage signal. The current-voltage conversion module receives an input current signal from the current sensor, and outputs a voltage signal applicable to the power analyzer through the transformation ratio of the current-voltage conversion module.
Further, the input interface of the current-voltage conversion module is a DB9 interface, and the output interface of the current-voltage conversion module is a BNC.
Further, the current-voltage conversion module is a conversion resistor connected in parallel to the output end of the current sensor. The current sensors for simulating current output can only be converted into voltage through a transformation ratio and then input into the power analyzer, and some current sensors have different output load capacities, so that different conversion resistors can be selected as required to be suitable for different current sensors.
In addition, most current-to-voltage schemes at home and abroad are current transmitters. The alternating current or direct current of the main circuit to be tested can be directly converted into a standard signal of a DC 4-20 mA constant current loop which is output according to a linear proportion, and the standard signal is continuously transmitted to a receiving device (such as a computer or a display instrument). The current transducer only carries out transformation ratio output on the current, and the power supply of the sensor is not additionally provided. And the ac transmitter and the dc transmitter are separate. The existing current-to-voltage conversion products are mostly applied to various industrial current online isolation detection systems, the current-to-voltage conversion products are not used for transmitting of a current sensor, most of the precision is about 0.2%, and the current sensor is not additionally supplied with power by equipment. To this technical problem, the utility model discloses still include power module, power module connects current sensor for supply power for current sensor.
The utility model provides a power module supplies power for current sensor, and current sensor converts test current to corresponding analog current signal, and the analog current signal of current sensor output converts voltage signal into through converting resistance, inputs power analyzer. The power analyzer collects the voltage signal and processes the voltage signal to restore the initial test current value of the current sensor.
As preferred scheme, current sensor adopts lyme IT 60, and power analysis appearance adopts day PW3390, and power module adopts bright latitude PD-2515KR, and the resistance of converting resistor is 1-10 omega.
As preferred scheme, the utility model discloses current sensor adopts lime IF-1010-S, and power analysis appearance adopts day PW3390, and power module adopts bright latitude PD-2515KR, and the resistance of converting resistor is 1-10 omega.
The utility model has the advantages as follows:
1. the device realizes the conversion from the current signal output by the current sensor to the voltage signal;
2. the device can be configured with different conversion resistors and is suitable for different current sensors;
3. the device provides a power supply for the current sensor.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
In order to make the technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
Example 1:
referring to fig. 1, the present embodiment provides a sensor signal conversion apparatus, which solves the problem of mismatch between an interface of a current sensor and a power analyzer. The device comprises a current-voltage conversion module and a power supply module. The power module is connected with the current sensor and used for supplying power to the current sensor. And a current-voltage conversion module is connected between the output end of the current sensor and the input end of the power analyzer and converts an output current signal of the current sensor into a voltage signal. The current-voltage conversion module receives an input current signal from the current sensor, and outputs a voltage signal applicable to the power analyzer through the transformation ratio of the current-voltage conversion module.
The power module supplies power to the current sensor, the current sensor converts the test current into a corresponding analog current signal, and the analog current signal output by the current sensor is converted into a voltage signal through the conversion resistor and is input into the power analyzer. The power analyzer collects the voltage signal and processes the voltage signal to restore the initial test current value of the current sensor.
The current-voltage conversion module can select conversion resistors with different resistance values according to different load capacities of the current sensors. The input interface of the current-voltage conversion module is DB9 interface, and the output interface of the current-voltage conversion module is BNC (male)
Example 2:
a sensor signal conversion device comprises a current-voltage conversion module and a power supply module. The power module is connected with the current sensor and used for supplying power to the current sensor. And a current-voltage conversion module is connected between the output end of the current sensor and the input end of the power analyzer and converts an output current signal of the current sensor into a voltage signal. The current-voltage conversion module receives an input current signal from the current sensor, and outputs a voltage signal applicable to the power analyzer through the transformation ratio of the current-voltage conversion module.
In this embodiment, the current sensor is lyme IT 60, the power analyzer is daily PW3390, the power module adopts bright weft PD-2515KR, and the resistance of the conversion resistor is 5 Ω. The input current range of the switching resistor receiving the input current signal from the current sensor: 0-1000 mA. The conversion precision is 0.05% through testing.
Example 3:
a sensor signal conversion device comprises a current-voltage conversion module and a power supply module. The power module is connected with the current sensor and used for supplying power to the current sensor. And a current-voltage conversion module is connected between the output end of the current sensor and the input end of the power analyzer and converts an output current signal of the current sensor into a voltage signal. The current-voltage conversion module receives an input current signal from the current sensor, and outputs a voltage signal applicable to the power analyzer through the transformation ratio of the current-voltage conversion module.
In this embodiment, the current sensor is lyme IF-1010-S, the power analyzer is daily PW3390, the power module adopts bright weft PD-2515KR, and the resistance of the conversion resistor is 5 Ω. The input current range of the switching resistor receiving the input current signal from the current sensor: 0-100 mA.
In summary, although the present invention has been described with reference to the preferred embodiments, it should be understood that the present invention is not limited thereto, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention.
Claims (8)
1. Sensor signal conversion equipment, its characterized in that: the power supply comprises a current sensor, a power analyzer and a current-voltage conversion module, wherein the current-voltage conversion module is connected between the output end of the current sensor and the input end of the power analyzer, and converts an output current signal of the current sensor into a voltage signal by the current-voltage conversion module.
2. The sensor signal conversion device according to claim 1, characterized in that: the input interface of the current-voltage conversion module is a DB9 interface, and the output interface of the current-voltage conversion module is a BNC.
3. The sensor signal conversion apparatus according to claim 1 or 2, characterized in that: the current-voltage conversion module is a conversion resistor connected in parallel to the output end of the current sensor.
4. The sensor signal conversion device according to claim 3, characterized in that: the power supply module is connected with the current sensor and used for supplying power to the current sensor.
5. The sensor signal conversion device according to claim 4, characterized in that: the current sensor adopts Lyme IT 60, the power analyzer adopts daily PW3390, the power module adopts plain weft PD-2515KR, and the resistance value of the conversion resistor is 1-10 omega.
6. The sensor signal conversion device according to claim 5, characterized in that: the resistance of the conversion resistor is 5 Ω.
7. The sensor signal conversion device according to claim 4, characterized in that: the current sensor adopts Lyme IF-1010-S, the power analyzer adopts daily PW3390, the power module adopts plain weft PD-2515KR, and the resistance value of the conversion resistor is 1-10 omega.
8. The sensor signal conversion device according to claim 7, characterized in that: the resistance of the conversion resistor is 5 Ω.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021545184.7U CN213023307U (en) | 2020-07-30 | 2020-07-30 | Sensor signal conversion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021545184.7U CN213023307U (en) | 2020-07-30 | 2020-07-30 | Sensor signal conversion device |
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| Publication Number | Publication Date |
|---|---|
| CN213023307U true CN213023307U (en) | 2021-04-20 |
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| CN202021545184.7U Active CN213023307U (en) | 2020-07-30 | 2020-07-30 | Sensor signal conversion device |
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| CN (1) | CN213023307U (en) |
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- 2020-07-30 CN CN202021545184.7U patent/CN213023307U/en active Active
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Address after: Room 611, building 1, Xiangyu wisdom, 579 Chezhan North Road, Dongfeng Road Street, Kaifu District, Changsha City, Hunan Province 410000 Patentee after: Hunan Aikesaipu Measurement and Control Technology Co.,Ltd. Country or region after: China Address before: Room 611, building 1, Xiangyu wisdom, 579 Chezhan North Road, Dongfeng Road Street, Kaifu District, Changsha City, Hunan Province 410000 Patentee before: CHANGSHA ACCEXP INSTRUMENT CO.,LTD. Country or region before: China |
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| CP03 | Change of name, title or address |