阅读说明：本技术 一种智能数显扭矩扳手电路控制系统及控制方法 (intelligent digital display torque wrench circuit control system and control method ) 是由 赵永晶 徐东 徐骏升 黄丙庆 邓连生 侯伟强 张鑫 于 2019-09-27 设计创作，主要内容包括：本发明公开了一种智能数显扭矩扳手电路控制系统及控制方法,该系统包括信号调理模块、角度检测模块、微控制器模块、通讯模块、人机交互模块和控制终端；所述信号调理模块实时采集扳手所受扭矩值,将扭矩值转换成数字信号传输给微控制器模块；所述角度检测模块实时采集扳手拧紧过程中航向角变化值,并传输给微控制器模块；所述微控制器模块根据接收的扳手拧紧过程中航向角变化值,计算得到扳手拧紧角度值,并将扳手拧紧角度值和扭矩值通过通讯模块上传至控制终端,同时微控制器模块将扳手拧紧角度值和扭矩值与设定值进行比较,通过人机交互模块报警提示是否合格。(The invention discloses a circuit control system and a control method for an intelligent digital display torque wrench, wherein the system comprises a signal conditioning module, an angle detection module, a microcontroller module, a communication module, a human-computer interaction module and a control terminal; the signal conditioning module collects torque values borne by the wrench in real time, converts the torque values into digital signals and transmits the digital signals to the microcontroller module; the angle detection module collects a course angle change value in the wrench tightening process in real time and transmits the course angle change value to the microcontroller module; the microcontroller module calculates a wrench tightening angle value according to the received course angle change value in the wrench tightening process, uploads the wrench tightening angle value and the torque value to the control terminal through the communication module, compares the wrench tightening angle value and the torque value with a set value, and gives an alarm to prompt whether the wrench is qualified or not through the human-computer interaction module.)

1. An intelligent digital display torque wrench circuit control system is characterized by comprising a signal conditioning module, an angle detection module, a microcontroller module, a communication module, a human-computer interaction module and a control terminal;

the signal conditioning module collects torque values borne by the wrench in real time, converts the torque values into digital signals and transmits the digital signals to the microcontroller module; the angle detection module collects a course angle change value in the wrench tightening process in real time and transmits the course angle change value to the microcontroller module; the microcontroller module calculates a wrench tightening angle value according to the received course angle change value in the wrench tightening process, uploads the wrench tightening angle value and the torque value to the control terminal through the communication module, compares the wrench tightening angle value and the torque value with a set value, and gives an alarm to prompt whether the wrench is qualified or not through the human-computer interaction module.

2. the circuit control system of the intelligent digital display torque wrench according to claim 1, further comprising a power module, wherein the power module comprises a wireless charging circuit, a lithium battery charging and discharging protection circuit, a level conversion circuit and a lithium battery, the lithium battery charging and discharging protection circuit is connected with the wireless charging circuit and the lithium battery, electric energy output by the wireless charging circuit and the lithium battery is processed by the lithium battery charging and discharging protection circuit and then input into the level conversion circuit, and the level conversion circuit converts the electric energy into voltage required by other modules.

3. The circuit control system of the intelligent digital display torque wrench as claimed in claim 1, further comprising a clock synchronization module for performing clock synchronization between the wrench and the control terminal.

4. the circuit control system of the intelligent digital display torque wrench according to claim 1, further comprising a storage module, wherein the storage module comprises a storage module I and a storage module II, wrench tightening data are stored through the storage module I and the storage module II, the microcontroller module transmits the data in the storage module I to the control terminal through the communication module, and when the data are wrong, whether the data of the storage module I and the data of the storage module II are consistent or not is detected, and fault judgment is performed.

5. The circuit control system of the intelligent digital display torque wrench according to claim 1, wherein the signal conditioning module comprises a Wheatstone full-bridge circuit, a signal conditioning circuit and an A/D conversion circuit, and the Wheatstone full-bridge circuit collects torque values of the wrench in real time and transmits the torque values to the signal conditioning circuit; the signal conditioning circuit converts the received torque value into a voltage signal and transmits the voltage signal to the A/D conversion circuit; the A/D conversion circuit converts the received voltage signal into a data signal and transmits the data signal to the microcontroller module.

6. The circuit control system of the intelligent digital display torque wrench as claimed in claim 1, wherein the angle detection module comprises a three-axis gyroscope for collecting a course angle variation value in a wrench tightening process and a three-axis magnetometer for calibrating the gyroscope.

7. The circuit control system of the intelligent digital-display torque wrench of claim 1, wherein the human-computer interaction module comprises:

The display screen is used for displaying the wrench tightening angle value, the torque value, the battery electric quantity, the WIFI signal intensity and the time information; and

the key circuit is used for realizing the switching of working modes and the target value configuration of tightening torque; and

The information interaction module is used for identifying station part information of wrench tightening operation, acquiring station part images of the wrench tightening operation, and performing face identification on a wrench tightening operator; and

The warning component is used for warning and prompting whether the wrench is qualified or not;

The warning assembly comprises a multicolor LED interface circuit, a buzzer and a vibration motor.

8. the circuit control system of the intelligent digital display torque wrench according to claim 1, wherein the control terminal comprises a PC end and a mobile end.

9. The circuit control system of the intelligent digital display torque wrench according to claim 8, wherein the communication module comprises a serial communication module in communication connection with the PC terminal and a wireless communication module in communication connection with the PC terminal and the mobile terminal, the serial communication module comprises a 232 serial circuit and a 485 serial circuit, and the wireless communication module comprises a WIFI module and a 5G communication module.

10. a circuit control method of an intelligent digital display torque wrench is realized based on the circuit control system of the intelligent digital display torque wrench, which is characterized by comprising the following steps:

The control terminal transmits the wrench tightening qualified interval and the angle range to the microcontroller module; the human-computer interaction module identifies station part information, face information of a wrench tightening operator and acquired station part image information, and uploads the station part image information to the microcontroller module to realize wrench tightening positioning;

The signal conditioning module collects torque values borne by the wrench in real time, converts the torque values into digital signals and transmits the digital signals to the microcontroller module; the angle detection module collects a course angle change value in the wrench tightening process in real time and transmits the course angle change value to the microcontroller module; the microcontroller module calculates an integral to obtain a wrench tightening angle value according to the received course angle change value in the wrench tightening process, compares the wrench tightening angle value and the torque value with a set value, and gives an alarm to prompt whether the wrench is qualified or not through the human-computer interaction module; meanwhile, the microcontroller module transmits data in the storage module I to the control terminal through the communication module, the control terminal displays the current wrench process data state in real time, and if the data are uploaded wrongly, whether the data of the storage module I and the data of the storage module II are consistent or not is detected, and fault judgment is carried out.

Technical Field

the invention relates to the technical field of control circuits, in particular to a circuit control system and a circuit control method for an intelligent digital display torque wrench.

Background

Along with the improvement of product quality in the manufacturing industry of China and the rapid development of the intelligent assembly industry, the torque precision requirement of the manufacturing industry, particularly the industries such as automobiles, railways, aerospace and the like, in the assembly and tightening process is higher and higher, particularly the torque requirement of high-precision equipment and high-strength parts is very accurate, a threaded fastener must be controlled within a set torque range for assembly, meanwhile, along with the development of the intelligent assembly industry, the requirement of the manufacturing industry on a torque wrench is not only limited to the control of the torque precision of a tightened fastener, and more requirements are required to meet the requirements of other functions of the intelligent assembly industry.

The inventor finds that the power consumption of the conventional circuit control system of the manual digital display torque wrench is large, the wrench battery charging mode generally adopts a direct-insertion charging mode, the direct-insertion charging mode is easy to wear in the industrial application field of the wrench, so that charging cannot be carried out or the charging efficiency is reduced, and charging and discharging protection is not carried out on a rechargeable battery used by the wrench independently; the general man-machine interaction of the wrench is poor, the wrench has no function of identifying information of an operator except sound, vibration and light warning, and high-level information interaction with the operator cannot be realized; in practical application, data is easy to lose when the wrench is tightened, so that data disorder is caused, and meanwhile, the problem of reading and writing of wrench configuration parameters can cause frequent wrench initialization failure.

The inventor also finds that the communication mode of the wrench and the PC end or the mobile end is single at present, the wrench cannot be compatible with indoor and outdoor data transmission, and particularly, the wrench needs to achieve the function of uploading data anytime and anywhere as the big data era comes.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention provides a circuit control system and a circuit control method for an intelligent digital display torque wrench, which have the characteristics of low power consumption, good man-machine interaction, high information interaction level, wireless charging, double data storage, high torque and angle precision, various communication interfaces and the like.

The technical scheme of the circuit control system of the intelligent digital display torque wrench provided by the invention on one hand is as follows:

An intelligent digital display torque wrench circuit control system comprises a signal conditioning module, an angle detection module, a microcontroller module, a communication module, a man-machine interaction module and a control terminal;

the signal conditioning module collects torque values borne by the wrench in real time, converts the torque values into digital signals and transmits the digital signals to the microcontroller module; the angle detection module collects a course angle change value in the wrench tightening process in real time and transmits the course angle change value to the microcontroller module; the microcontroller module calculates a wrench tightening angle value according to the received course angle change value in the wrench tightening process, uploads the wrench tightening angle value and the torque value to the control terminal through the communication module, compares the wrench tightening angle value and the torque value with a set value, and gives an alarm to prompt whether the wrench is qualified or not through the human-computer interaction module.

Further, still include power module, power module includes wireless charging circuit, lithium cell charge and discharge protection circuit, level conversion circuit and lithium cell, and wireless charging circuit and lithium cell are connected to lithium cell charge and discharge protection circuit, and the electric energy of wireless charging circuit and lithium cell output is through lithium cell charge and discharge protection circuit processing back, inputs level conversion circuit, is converted the electric energy into the required voltage of other modules by level conversion circuit.

Furthermore, the system also comprises a clock synchronization module used for performing clock synchronization on the wrench and the control terminal.

Further, the wrench tightening data storage device further comprises a storage module, the storage module comprises a storage module I and a storage module II, the wrench tightening data are stored through the storage module I and the storage module II, the microcontroller module transmits the data in the storage module I to the control terminal through the communication module, and when the data are uploaded, whether the data of the storage module I and the data of the storage module II are consistent or not is detected, and fault judgment is carried out.

Furthermore, the signal conditioning module comprises a Wheatstone full-bridge circuit, a signal conditioning circuit and an A/D (analog/digital) conversion circuit, wherein the Wheatstone full-bridge circuit collects a torque value borne by the wrench in real time and transmits the torque value to the signal conditioning circuit; the signal conditioning circuit converts the received torque value into a voltage signal and transmits the voltage signal to the A/D conversion circuit; the A/D conversion circuit converts the received voltage signal into a data signal and transmits the data signal to the microcontroller module.

furthermore, the angle detection module comprises a triaxial gyroscope for collecting a heading angle change value in the wrench tightening process and a triaxial magnetometer for calibrating the gyroscope.

further, the human-computer interaction module comprises:

The display screen is used for displaying the wrench tightening angle value, the torque value, the battery electric quantity, the WIFI signal intensity and the time information; and

The key circuit is used for realizing the switching of working modes and the target value configuration of tightening torque; and

The information interaction module is used for identifying station part information of wrench tightening operation, acquiring station part images of the wrench tightening operation, and performing face identification on a wrench tightening operator; and

The warning component is used for warning and prompting whether the wrench is qualified or not;

The warning assembly comprises a multicolor LED interface circuit, a buzzer and a vibration motor.

further, the control terminal comprises a PC terminal and a mobile terminal.

further, communication module includes serial communication module with PC end communication connection and the wireless communication module with PC end and removal end communication connection, serial communication module includes 232 serial circuits and 485 serial circuits, wireless communication module includes WIFI module and 5G communication module.

The technical scheme of the circuit control method for the intelligent digital display torque wrench provided by the other aspect of the disclosure is as follows:

A circuit control method of an intelligent digital display torque wrench is realized based on the circuit control system of the intelligent digital display torque wrench, and comprises the following steps:

The control terminal transmits the wrench tightening qualified interval and the angle range to the microcontroller module; the human-computer interaction module identifies station part information, face information of a wrench tightening operator and acquired station part image information, and uploads the station part image information to the microcontroller module to realize wrench tightening positioning;

The signal conditioning module collects torque values borne by the wrench in real time, converts the torque values into digital signals and transmits the digital signals to the microcontroller module; the angle detection module collects a course angle change value in the wrench tightening process in real time and transmits the course angle change value to the microcontroller module; the microcontroller module calculates an integral to obtain a wrench tightening angle value according to the received course angle change value in the wrench tightening process, compares the wrench tightening angle value and the torque value with a set value, and gives an alarm to prompt whether the wrench is qualified or not through the human-computer interaction module; meanwhile, the microcontroller module transmits data in the storage module I to the control terminal through the communication module, the control terminal displays the current wrench process data state in real time, and if the data are uploaded wrongly, whether the data of the storage module I and the data of the storage module II are consistent or not is detected, and fault judgment is carried out.

Through the technical scheme, the invention has the beneficial effects that:

(1) The intelligent digital display torque wrench is provided with a serial port and a wireless communication module, the intelligent digital display torque wrench in a factory area can realize communication connection between a PC (personal computer) end and a mobile end through a WIFI (wireless fidelity) module, in the actual screwing operation process, a microcontroller uploads wrench data to the PC end or the mobile end in real time and processes the data, and the PC end and the mobile end realize data interconnection; the intelligent digital display torque wrench is outside a factory area, can be in communication connection with a PC (personal computer) end or a mobile end through a 5G communication module, transmits data to the PC end or the mobile end in real time, and is matched with the mobile end to carry out operation indication, so that operation guidance and data management inside and outside a factory are facilitated;

(2) The wrench tightening data is stored through the storage module I and the storage module II, the data is stored in the storage module in each tightening process, double backup is carried out, meanwhile, the data in the storage module I is transmitted to the PC end and the mobile end through the communication module, if the data are transmitted wrongly, whether the data of the storage module I and the data of the storage module II are consistent or not is detected, fault judgment is carried out, and the mobile end prompts that the tightening data are failed to be transmitted upwards;

(3) The wireless charging circuit is used for wirelessly charging the wrench in high power and is matched with a lithium battery charging and discharging protection circuit to realize the charging protection and the over-discharging protection of the wrench;

(4) The invention realizes real-time data transmission between the wrench and the PC end and between the wrench and the mobile end through various communication interface modes, and ensures that data is not lost and parameters are configured immediately;

(5) the invention can realize the space positioning of the tool by combining the radio frequency identification module with the RFID positioning system; through the code scanning module, the parameters and the position information of the station parts can be identified, an operator is guided to carry out actual screwing operation, and the screwing process is convenient to monitor, record and trace; the camera module can identify the station parts, process and upload image data information, and simultaneously can identify the face of an operator, so that the management is convenient;

(6) The invention realizes the higher-level information interaction function of the wrench, an operator, a PC end and a mobile end through the information interaction module, and is convenient for the management of materials, station parts, data and personnel;

(7) the torque applied to the wrench is collected in real time through the signal conditioning module, the torque value is converted into a voltage signal, and then the voltage signal is converted into a digital signal and transmitted to the microcontroller module; the method comprises the steps that the change of a heading angle in the process of screwing the wrench is collected through an angle detection module and transmitted to a microcontroller module; data interaction is carried out in real time through the microcontroller module, the signal conditioning module and the angle detection module, the accuracy of torque and angle in the wrench tightening process is guaranteed, and the assembly qualification of various station parts is guaranteed.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the application and not to limit the invention.

FIG. 1 is a schematic diagram of a circuit control system of a smart digital torque wrench according to an embodiment;

FIG. 2 is a schematic structural diagram of a power module according to an embodiment;

fig. 3 is a schematic structural diagram of a communication module according to an embodiment;

fig. 4 is a schematic structural diagram of a control terminal according to a first embodiment;

In the figure, 1, a microcontroller module, 2, a power supply module, 21, a wireless charging circuit, 22, a lithium battery charging and discharging protection circuit, 23, a level conversion circuit, 24, a lithium battery, 3, a signal conditioning module, 31, a Wheatstone full bridge circuit, 32, a signal conditioning circuit, 33, an A/D conversion circuit, 4, a storage module, 41, a storage module I, 42, a storage module II, 5, an angle detection module, 6, a human-computer interaction module, 61, a display screen, 62, a key circuit, 63, a multicolor LED interface circuit, 64, a buzzer, 65, a vibration motor, 66, an information interaction module, 7, a communication module, 71, a serial communication circuit, 711, 232 serial circuit, 712, 485 communication circuit, 72, a wireless communication circuit, 721, a WIFI module, 722, 5G communication module, 8, a clock synchronization module, 81, a clock circuit, 9, a control terminal, 91. PC end, 92, mobile end.

Detailed Description

The invention is further described with reference to the following figures and examples.

It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the invention as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.