CN213240419U

CN213240419U - Dynamic plugging test circuit for electric lifting table

Info

Publication number: CN213240419U
Application number: CN202022090473.9U
Authority: CN
Inventors: 王强; 杨少波; 刘益生
Original assignee: Changxing Jingshi Technology Co ltd
Current assignee: Changxing Jingshi Technology Co ltd
Priority date: 2020-09-22
Filing date: 2020-09-22
Publication date: 2021-05-18
Anticipated expiration: 2030-09-22

Abstract

The utility model relates to a technical field that the circuit detected discloses a dynamic plug test circuit for electric lift table, including the feed end, the feed end passes through converting circuit and links to each other with sense terminal, test end, the test end passes through current-limiting resistance and is connected with the ADC port of the main chip of electric lift table, converting circuit is used for connecting according to the sense terminal whether waiting to examine the device, changes the voltage that the test end corresponds the position. The utility model discloses a test circuit simple structure, convenient operation is convenient for popularize and promote.

Description

Dynamic plugging test circuit for electric lifting table

Technical Field

The utility model relates to a technical field that the circuit detected, especially a dynamic plug test circuit for electric lift table.

Background

Electric lift table is a neotype healthy desk, can adjust the height of desktop through the push rod, and the people that more is fit for different heights uses, can provide simultaneously and sit and stand alternate official working gesture, better protection vertebra, messenger's office staff has better mental and physical appearance.

At present, various connection ports are arranged in a control circuit of the electric lifting table, such as a Hall element used for speed regulation in a direct current motor, and the like, and because the connection port is a pluggable interface, the plugging test is necessary in the research and development test process. In addition to plug tests for verifying the reliability of the structure, there are more plug tests for verifying the reliability of the circuit and the software. At present, when a pluggable interface of various types is used for plugging and unplugging tests of verification circuits and software reliability, a switching circuit formed by devices such as a field effect tube is connected to an IO port of a processor, whether plugging and unplugging are carried out or not is judged through high voltage and low voltage, and the whole circuit structure is very complex and poor in reliability.

SUMMERY OF THE UTILITY MODEL

The utility model provides a dynamic plug test circuit for electric lift table has solved current plug test circuit structure complicacy, the poor scheduling problem of reliability.

The utility model discloses can realize through following technical scheme:

the utility model provides a developments plug test circuit for electric lift table, includes the supply end, the supply end passes through converting circuit and links to each other with sense terminal, test end, the test end passes through the ADC port of current-limiting resistor and the main chip of electric lift table and is connected, converting circuit is used for connecting according to the sense terminal whether waiting to examine the device, changes the voltage of the position that the test end corresponds.

Further, the conversion circuit comprises a diode and a pull-up resistor which are connected in parallel, one end of the conversion circuit is connected with the power supply end, and the other end of the conversion circuit is connected with the detection end and the test end.

Further, the power supply end is connected with a power supply, and the power supply is provided with 5V direct current.

The utility model discloses profitable technological effect lies in:

by utilizing the conversion circuit, the voltage at the position corresponding to the test end is changed, so that the voltage information detected by the ADC port in the main chip of the electric lifting table is changed, whether the test end is inserted to carry out the device to be tested can be judged, and the insertion test is completed. Because the ADC port in the main chip is adopted for voltage sampling of the testing end, and the reading obtained by the main chip through sampling the ADC port is determined according to the number of bits of the ADC module in the main chip, even a small pressure difference can be detected, the power supply of a device to be tested cannot be influenced, and the stability and the reliability of the test can be ensured. In addition, the whole plugging test circuit is simple in structure, convenient to operate and convenient to popularize and popularize.

Drawings

FIG. 1 is a schematic diagram of the overall circuit connection of the present invention;

fig. 2 is a schematic view of the current direction when the testing terminal is connected to the device under test.

Detailed Description

The following describes in detail specific embodiments of the present invention with reference to the accompanying drawings.

Referring to the attached drawing 1, the utility model provides a developments plug test circuit for electric lift table, including the supply end, this supply end passes through converting circuit and detection end, test end and links to each other, and this test end passes through current-limiting resistance and is connected with the ADC port of the main chip of electric lift table, and this converting circuit is used for connecting according to the detection end whether waiting to examine the device, changes the voltage that the test end corresponds the position. Therefore, the voltage of the corresponding position of the test end is changed by utilizing the conversion circuit, so that the voltage information detected by the ADC port in the main chip of the electric lifting table is changed, whether the test end is inserted to carry out the device to be tested can be judged, and the real-time insertion test is completed. Because the ADC port in the main chip is adopted for sampling the voltage of the testing end, and the reading obtained by the main chip through sampling the ADC port is determined according to the number of bits of the ADC module in the main chip, even a small pressure difference can be detected, and the power supply of the device to be detected cannot be influenced.

Specifically, the conversion circuit comprises a diode D1 and a pull-up resistor R1 which are connected in parallel, wherein one end of the diode D1 is connected with a power supply end, the other end of the diode D1 is connected with a detection end and a test end, and the test end is connected with an ADC port in a main chip through a current-limiting resistor R2. The power supply end is connected with a power supply, and the power supply can be provided with 5V direct current.

When the detection end is not inserted into the device to be detected, such as a power plug is not inserted into a socket, a motor Hall terminal is not inserted into a Hall element, and the like, a power supply, a conversion circuit, the detection end and the device to be detected do not form a loop, an ADC port in a main chip samples the voltage of the detection end, and the voltage of the detection end is the same as the voltage of the power supply due to the existence of a pull-up resistor R1, namely 5V; when the detection end is plugged into a device to be detected, the device to be detected is taken as a load access circuit, if a power plug is plugged into a socket, a motor Hall terminal is plugged into a Hall element and the like, as shown in FIG. 2, a power supply, a conversion circuit, the detection end and the device to be detected form a loop, at the moment, a diode D1 is conducted, so that current flows to the device to be detected through a diode D1, the voltage drop required by the conduction of a diode D1 between the voltage of the corresponding position of the detection end and the power voltage is 0.7V, thus the sampling voltage of an ADC port in a main chip is changed into 4.3V, and the sampling voltage of the ADC port in the main chip is changed aiming at the conditions that the detection end is plugged into the device to be detected and is not plugged into the device to be detected, so as to realize real-time plugging test.

Although specific embodiments of the present invention have been described above, it will be appreciated by those skilled in the art that these embodiments are merely illustrative and various changes or modifications may be made therein without departing from the principles and spirit of the invention, and therefore, the scope of the invention is defined by the appended claims.

Claims

1. The utility model provides a developments plug test circuit for electric lift table which characterized in that: including the supply end, the supply end passes through converting circuit and links to each other with sense terminal, test end, the test end passes through the current-limiting resistor and is connected with the ADC port of the main chip of electric lift table, converting circuit is used for connecting according to the sense terminal whether waiting to examine the device, changes the voltage of the position that the test end corresponds.

2. The dynamic plugging test circuit for the electric lifting table as claimed in claim 1, wherein: the conversion circuit comprises a diode and a pull-up resistor which are connected in parallel, one end of the conversion circuit is connected with the power supply end, and the other end of the conversion circuit is connected with the detection end and the test end.

3. The dynamic plugging test circuit for the electric lifting table as claimed in claim 2, wherein: the power supply end is connected with a power supply, and the power supply is provided with 5V direct current.