CN217901942U - Voltage and current monitoring system - Google Patents
Voltage and current monitoring system Download PDFInfo
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- CN217901942U CN217901942U CN202220484804.3U CN202220484804U CN217901942U CN 217901942 U CN217901942 U CN 217901942U CN 202220484804 U CN202220484804 U CN 202220484804U CN 217901942 U CN217901942 U CN 217901942U
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Abstract
The utility model provides a voltage current monitored control system is used for detecting the voltage current monitor chip of the same chip that awaits measuring each way voltage current data through setting up on a chip test circuit board to and pass through a master control chip of I2C bus connection with a plurality of voltage current monitor chips, realized carrying out the function that voltage current monitored to the multichannel power on a chip test circuit board. This application is connected a plurality of main control chips with the monitoring host computer again, has realized the real time monitoring to the extensive voltage current way number of polylith chip test circuit board simultaneously. The technical scheme of the application realizes full-automatic intelligent monitoring of large-scale chip testing, shortens detection time and improves working efficiency.
Description
Technical Field
The utility model relates to a chip test technical field especially relates to a voltage current monitored control system.
Background
The chips all have a certain fraction defective. Before a chip is put into production and used, the chip needs to be tested in a large batch to check various functions and parameters of the chip. In chip testing, a phenomenon that a voltage or a current exceeds or falls below a preset parameter often exists, and therefore, monitoring of the voltage and the current of a tested chip is very important.
A chip to be tested is generally and correspondingly placed on a chip test circuit board, the monitoring and the recording of a plurality of power supplies can not be simultaneously carried out on a plurality of chips on a plurality of chip test circuit boards in the current chip test system, the real-time monitoring of large-scale voltage and current paths can not be realized, the automation degree is low, the test steps are multiple, the time is long, and the production efficiency is not high. Monitoring of multiple power supplies in the prior art is generally difficult to achieve technically, and redundancy and instantaneity of control lines are insufficient due to excessive nodes.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a voltage current monitored control system to solve the problem that exists among the background art.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a voltage current monitoring system comprising: the monitoring system comprises at least one monitoring unit, a chip testing circuit board and a monitoring host, wherein each monitoring unit corresponds to one chip testing circuit board, the output ends of a plurality of monitoring units are electrically connected with the input end of the monitoring host, and the monitoring host is used for collecting monitoring data of each monitoring unit;
wherein each of the monitoring units comprises:
the input end of each voltage and current monitoring chip is connected with one output of a chip to be tested on the same chip test circuit board, and each voltage and current monitoring chip is used for independently collecting each output current and voltage of the same chip to be tested;
the main control chip is used for reading data collected by each voltage and current monitoring chip on the same chip test circuit board and sending the read data to the monitoring host.
Preferably, in each monitoring unit, each voltage and current monitoring chip is connected to the main control chip through an I2C bus.
Preferably, each of the main control chips is connected to the monitoring host through an I2C bus.
Preferably, each main control chip establishes connection and communication with the monitoring host through a USB communication signal interface.
Preferably, each of the monitoring units further comprises: each precision resistor is arranged corresponding to one voltage and current monitoring chip; each precision resistor is connected with the chip to be detected in series, a differential signal of a detection current is led out from two ends of each precision resistor to the corresponding voltage and current monitoring chip, and each voltage and current monitoring chip monitors voltage and current data of each path of the chip to be detected by detecting the current and voltage values flowing on the precision resistor.
Preferably, each of the monitoring units further comprises: and the power management module is electrically connected to the main control chip and is used for outputting voltage to the main control chip according to the type of the chip to be tested.
Preferably, the monitoring host is provided with a test software control platform, and each main control chip is connected with the test software control platform of the monitoring host and is used for executing a test command generated by the test software control platform according to a set test parameter; the test software control platform also processes and displays real-time current and voltage of each chip to be tested during working so as to achieve the purpose of monitoring.
Compared with the prior art, the technical scheme of the utility model following beneficial effect has:
the utility model provides a voltage current monitored control system is used for detecting the voltage current monitor chip of the same chip that awaits measuring each way voltage current data through setting up on a chip test circuit board to and pass through a master control chip of I2C bus connection with a plurality of voltage current monitor chips, realized carrying out the function that voltage current monitored to the multichannel power on a chip test circuit board. This application is connected a plurality of main control chips with the monitoring host computer again, has realized the real time monitoring to the extensive voltage current way number of polylith chip test circuit board simultaneously. The technical scheme of the application realizes full-automatic intelligent monitoring of large-scale chip testing, shortens detection time and improves working efficiency.
Drawings
The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the present application, and the description and illustrative embodiments of the present application are provided to explain the present application and not to limit the present application. In the drawings:
fig. 1 is a block diagram of a voltage and current monitoring system according to the present invention;
fig. 2 is the utility model discloses a voltage and current monitor chip monitors the realization schematic block diagram of the voltage and current data of the chip that awaits measuring every way through precision resistor.
Illustration of the drawings:
1. a monitoring unit; 11. a voltage current monitoring chip; 12. a main control chip; 13. a chip to be tested; 14. precision resistance;
2. and monitoring the host.
Detailed Description
In order to make the objects, technical solutions and effects of the present invention clearer and clearer, the present invention will be described in further detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order, it being understood that the data so used may be interchanged under appropriate circumstances. Furthermore, the terms "comprises" and "comprising," as well as any variations thereof, are intended to cover a non-exclusive inclusion, such that a system, article, or apparatus that comprises a list of elements is not necessarily limited to those elements explicitly listed, but may include other elements not expressly listed or inherent to such product or apparatus.
Referring to fig. 1, a voltage and current monitoring system of the present application includes
The monitoring system comprises a plurality of monitoring units 1, wherein each monitoring unit 1 corresponds to a chip test circuit board, the output ends of the monitoring units 1 are electrically connected with the input end of a monitoring host 2, and the monitoring host is used for collecting monitoring data of each monitoring unit 1.
Wherein each of the monitoring units 1 comprises:
the voltage and current monitoring device comprises a plurality of voltage and current monitoring chips 11, wherein the input end of each voltage and current monitoring chip 11 is connected with one output of a chip 13 to be tested on the same chip test circuit board, and each voltage and current monitoring chip 11 is used for independently collecting each output current and voltage of the same chip 13 to be tested; and
a main control chip 12, its input is connected with the output of a plurality of voltage electric current monitor chip 11, its output with monitor host 2's input is connected for read the data that each voltage electric current monitor chip 11 on the same piece chip test circuit board gathered, and with the data transmission who reads to monitor host 2, monitor host 2 accessible monitoring multi-channel power supply's voltage electric current data analysis goes out the change situation of the voltage electric current of a plurality of chips 13 that await measuring.
In each monitoring unit 1, each voltage and current monitoring chip 11 is connected to the main control chip 12 through an I2C bus. Each main control chip 12 may be connected to the monitoring host 2 through an I2C bus, or each main control chip 12 may establish connection and communication with the monitoring host 2 through a USB communication signal interface.
Referring to fig. 2, each of the monitoring units 1 further includes: and a plurality of precision resistors 14, wherein each precision resistor 14 is arranged corresponding to one voltage and current monitoring chip 11. Each precision resistor 14 is connected in series with the chip 13 to be tested, a differential signal of the detection current is led out from two ends of each precision resistor 14 to the corresponding voltage and current monitoring chip 11, and each voltage and current monitoring chip 11 monitors voltage and current data of each path of the chip 13 to be tested by detecting the current and voltage values flowing through the precision resistor 14.
Furthermore, each of the monitoring units 1 further comprises: a power management module (not shown in the figure), electrically connected to the main control chip 12, for outputting a voltage to the main control chip 12 according to the kind of the chip 13 to be tested.
The monitoring host 2 is provided with a test software control platform, and each main control chip 12 is connected with the test software control platform of the monitoring host 2 and is used for executing a test command generated by the test software control platform according to a set test parameter. The test software control platform also processes and displays real-time current and voltage of each chip 13 to be tested during working so as to achieve the purpose of monitoring. For example, the test software control platform saves the received data to the CSV file and refreshes the state of the tables and line graphs in the test software.
To sum up, the utility model provides a voltage current monitored control system is used for detecting the voltage current monitoring chip of the same chip that awaits measuring each way voltage current data through setting up on a chip test circuit board to and pass through a master control chip of I2C bus connection with a plurality of voltage current monitoring chip, realized carrying out the function of voltage current control to the multichannel power on a chip test circuit board. This application is connected a plurality of main control chip and monitoring host computer again, monitors the voltage and current of each way output of a plurality of power on the polylith chip test circuit board by monitoring host computer simultaneously, analyzes out the voltage and current situation of change in time, discovers the defective products, guarantees the production quality of chip. The monitoring host can also store detection data so as to facilitate report statistics. The technical scheme of the application realizes the full-automatic intelligent monitoring of large-scale chip testing, shortens the detection time and improves the working efficiency.
The present invention has been described in detail with reference to the specific embodiments, but the present invention is only by way of example and is not limited to the specific embodiments described above. Any equivalent modifications and substitutions to those skilled in the art are intended to be within the scope of the present invention. Therefore, the equivalent changes and modifications without departing from the spirit and scope of the present invention should be covered in the scope of the present invention.
Claims (6)
1. A voltage current monitoring system, comprising: the monitoring system comprises at least one monitoring unit, a chip testing circuit board and a monitoring host, wherein each monitoring unit corresponds to one chip testing circuit board, the output ends of a plurality of monitoring units are electrically connected with the input end of the monitoring host, and the monitoring host is used for collecting monitoring data of each monitoring unit;
wherein each of the monitoring units includes:
the input end of each voltage and current monitoring chip is connected with one output of a chip to be tested on the same chip test circuit board, and each voltage and current monitoring chip is used for independently collecting each output current and voltage of the same chip to be tested;
the input end of the main control chip is connected with the output ends of the voltage and current monitoring chips, the output end of the main control chip is connected with the input end of the monitoring host, and the main control chip is used for reading data collected by each voltage and current monitoring chip on the same chip test circuit board and sending the read data to the monitoring host.
2. The voltage-current monitoring system according to claim 1, wherein in each monitoring unit, each voltage-current monitoring chip is connected to the main control chip through an I2C bus.
3. The voltage-current monitoring system according to claim 1, wherein each of the main control chips is connected to the monitoring host through an I2C bus.
4. The system according to claim 1, wherein each of the main control chips establishes connection and communication with the monitoring host through a USB communication signal interface.
5. A voltage current monitoring system according to claim 1 wherein each said monitoring unit further comprises: each precise resistor is arranged corresponding to one voltage and current monitoring chip; each precision resistor is connected with the chip to be detected in series, a differential signal of a detection current is led out from two ends of each precision resistor to the corresponding voltage and current monitoring chip, and each voltage and current monitoring chip monitors voltage and current data of each path of the chip to be detected by detecting the current and voltage values flowing on the precision resistor.
6. A voltage current monitoring system according to claim 1 wherein each said monitoring unit further comprises: and the power management module is electrically connected to the main control chip and is used for outputting voltage to the main control chip according to the type of the chip to be tested.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220484804.3U CN217901942U (en) | 2022-02-28 | 2022-02-28 | Voltage and current monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220484804.3U CN217901942U (en) | 2022-02-28 | 2022-02-28 | Voltage and current monitoring system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217901942U true CN217901942U (en) | 2022-11-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220484804.3U Active CN217901942U (en) | 2022-02-28 | 2022-02-28 | Voltage and current monitoring system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217901942U (en) |
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- 2022-02-28 CN CN202220484804.3U patent/CN217901942U/en active Active
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