A control method for a binding belt pre-tightening force monitoring instrument

Abstract

The present invention discloses a control method for a binding strap preload monitor. In order to overcome the problem that binding strap preload monitors in the prior art are generally unable to measure force while simultaneously monitoring and adjusting error data in real time, the buoy body of the present invention includes a monitor provided with an error modulation circuit and a pressure sensor, which is clamped along the length direction of the static binding strap, and the binding strap is continuously tightened to the preload force and then stopped; the error modulation circuit receives the pressure electrical signal continuously transmitted by the pressure sensor, stores the pressure electrical signal in a monitoring cycle during a preset monitoring period, calculates and stores the change slope of the pressure electrical signal in each cycle; classifies the error signal and determines the error category based on the change slope, and modulates and compensates the calculation result according to the error category. By adding an error modulation circuit, the errors are classified and processed, and the experimental data are processed according to different errors. At the same time, a communication module is added to achieve interconnection with a mobile device, which is convenient for real-time monitoring of data.

Description

Technical Field

[0001] The invention relates to the field of binding belt pre-tightening force monitoring instrument control, and in particular to a binding belt pre-tightening force monitoring instrument control method. Background Art

[0002] The strap preload monitoring device generally generates various errors during measurement due to force drift or temperature changes of the built-in pressure sensor, and the existing preload monitoring instruments or tension monitoring instruments generally reduce the error by adding mechanical structures, which greatly increases the complexity of the internal structure of the monitoring instrument. In addition, most monitoring instruments cannot monitor and correct the error data while monitoring the value.

[0003] For example, a "tension dynamometer" disclosed in Chinese patent literature, with publication number CN111537128B, includes a seat body through which a binding belt can pass, and the seat body is provided with a belt pressing seat that can press against the binding belt and make the binding belt form a bend in the seat body. It is characterized in that the tension dynamometer also has an air storage chamber and an air pressure detection element for detecting the gas pressure in the air storage chamber, and the belt pressing seat can move relative to the seat body and compress the gas in the air storage chamber under the top pressure of the binding belt. The present invention does not require additional actions such as tightening and twisting, and is more convenient to operate. The use of an air bag to reduce the force drift error increases the complexity of the internal structure, and it is impossible to achieve the effect of adjusting the error data while measuring, so there are certain defects. Summary of the invention

[0004] The present invention mainly solves the problem that in the prior art, the strap preload monitor is generally unable to measure force and monitor and adjust error data in real time; a control method for a strap preload monitor is provided, by adding an error modulation circuit on the main circuit board, classifying the errors, processing the experimental data according to different errors, and adding a communication module to achieve interconnection with mobile devices, so as to facilitate real-time monitoring of data.

[0005] The above technical problems of the present invention are mainly solved by the following technical solutions:

[0006] The present invention includes clamping a monitor provided with an error modulation circuit and a pressure sensor along the length direction of a static strap, and continuously tightening the strap to a pre-tightening force F before stopping; the error modulation circuit receives the pressure electrical signal continuously transmitted by the pressure sensor, stores the pressure electrical signal with a monitoring period t in a preset monitoring period T, calculates and stores the change slope of the pressure electrical signal in each t period; classifies the error signal and determines the error category according to the change slope, and modulates and compensates the calculation result according to the error category. When in use, the monitor clamps the strap that is not subjected to force and has not deformed, and then gradually applies force to the strap, monitors the force in real time in a mobile device through Bluetooth interconnection, and observes the external indicator light until the force is judged to reach the standard and then stops applying force; at this time, a waiting time is set, and an error judgment is made through the error modulation circuit. The internal circuit monitors within a specified period according to the set program, and if there is an error, the error category is determined, and the personnel are prompted to perform subsequent operations according to the error category, so as to minimize the impact of the error.

[0007] Preferably, the error modulation circuit includes a storage circuit, wherein the signal receiving end of the storage circuit is connected to the signal output end of the pressure sensor to receive the pressure electrical signal; the reset end of the storage circuit is connected to the reset circuit to receive the reset signal, and the reset circuit receiving end is electrically connected to the reset button to receive the reset signal. The purpose of setting up the storage circuit is to store all experimental data and measurement data in the circuit. Once data loss occurs in the subsequent circuit, the error monitoring and modulation work can be continued by retrieving the data in the storage circuit. In addition, a reset circuit is set up to facilitate the monitor to reset the experimental data with one key after the error modulation is completed. By transmitting a reset signal to the storage circuit, the actual operation steps are reduced and the convenience of personnel operation is increased.

[0008] Preferably, the error modulation circuit further comprises a calculation circuit, the output end of which is connected to the determination module and the receiving end of the storage circuit respectively; the receiving end of the calculation circuit is connected to the pressure sensor, receives the pressure electrical signal and the period t to obtain the data group of the change slope, transmits the data group to the storage circuit and the determination module, and sends the error classification signal to the determination module. The error modulation circuit is provided with a determination module, which completes the secondary monitoring of the error classification through the internal design by receiving the data transmitted by the calculation circuit, and uploads the monitoring results to the Bluetooth interaction.

[0009] Preferably, the error classification signal includes: temperature drift error signal difference and force drift error signal; if in the data group, within the T period, the slope variation range detected at each interval t period is within K min ~K max If the slope variation range and temperature drift error signal are between 0 and N, and the variation times are between 0 and N, the slope variation range and temperature drift error signal at this time are transmitted to the judgment module; if the slope variation range detected in each interval t cycle in the data group within the T period is between If the slope variation K2-K1 between two adjacent intervals t exceeds Then reduce the period t to Re-preset the monitoring period T. According to different error types, set the limit conditions of slope, cycle and monitoring times respectively to obtain the best measurement result.

[0010] Preferably, the output end of the determination module is connected to the signal modulation module, and the output end of the signal modulation module is electrically connected to the input end of the built-in Bluetooth module of the monitor. After receiving the error classification signal, the determination module transmits it to the modulation module, and the modulation module converts it into error category information and transmits it to the Bluetooth module, and the Bluetooth module transmits the error category information to the mobile device end of the Bluetooth interconnection. The signal modulation module is used to convert the electrical signal into a digital signal and transmit it to the mobile device end for display via Bluetooth. The information transmitted in the above process includes but is not limited to the error type, error data and correction results, and error processing method prompts.

[0011] Preferably, the error category information includes temperature drift error and force drift error; the Bluetooth module receives the preload interval information transmitted by the mobile device, and transmits the preload signal interval to the determination module after modulation; when the determination module determines that it is a temperature drift error, the error value and correction signal are transmitted to the calculation module, and the calculation module receives and corrects the generated correction force signal, and compares it with the preload signal interval to generate a correction force signal; the correction force signal is converted by the signal modulation module and transmitted to the Bluetooth module, and the corrected pressure is displayed as F1 on the mobile device; when the determination module determines that it is a force drift error, the relative position of the pressure sensor is changed by adjusting the displacement structure preset under the pressure sensor. When it is determined to be a temperature drift error, the data is modified to the interval where the actual data is located according to the actual situation, and transmitted to the mobile device. If it is determined to be a force drift error, the size of the linkage device or force associated with the pressure sensor is adjusted, and the data is re-monitored, so as to achieve the effect of modulating the error.

[0012] Preferably, if the correction force signal is within the preload signal interval, an end signal and a correction force signal are transmitted to the determination module; if the correction force signal is less than the preload signal interval, a force enhancement signal and a correction force signal are transmitted to the determination module; if the correction force signal is greater than the preload signal interval, a force reduction signal and a correction force signal are transmitted to the determination module. If the data after the temperature drift error correction is less than the preset preload interval, the mobile device prompts the personnel to increase the force until the preload interval is reached. If the corrected data is within the interval, only the modified data is transmitted to the mobile device for viewing without prompting the personnel to operate again. If it is greater than the interval, the personnel are prompted to reduce the force, loosen the straps and continue monitoring, and stop the operation when the measured force returns to the interval.

[0013] Preferably, the power supply end of the pressure sensor is connected to the transmission end of the built-in power module in the monitor through a transformer circuit. The power module includes a built-in battery and an external solar panel. The housing of the monitoring instrument is provided with a power switch and a reset button in sequence on one side of the solar panel. The power switch is electrically connected to the power module. This monitoring instrument is internally provided with a power supply unit, which can be charged externally or automatically charged by solar energy. It has a strong endurance and there is no need to worry about insufficient power during force measurement. In addition, a reset button and a power button are provided to facilitate the control of the normal operation of the monitor.

[0014] Preferably, a warning light ring is provided around the power switch, and the power supply end of the warning light ring is connected to the power transmission end of the power module; the receiving end of the warning light ring is connected to the output end of the calculation module inside the monitor, and the calculation module compares the correction force signal with the preload signal interval: if the correction force signal is less than the minimum value of the preload signal interval, signal a is transmitted to the warning light ring, and the warning light ring receives signal a and displays yellow light; if it is in the preload signal interval, signal B is transmitted to the warning light ring, and the warning light ring receives signal b and displays green light. By setting up a warning light ring, personnel can avoid constantly checking the mobile device prompts during the initial force measurement process. They only need to observe the changes in the light ring in advance to determine whether the preload interval has been reached, and then make operations by observing the data displayed on the mobile device during the subsequent monitoring process.

[0015] The beneficial effects of the present invention are:

[0016] 1. A control method for a binding belt preload monitor of the present invention, by adding an error modulation module in the circuit structure, classifies different errors according to the periodic slope monitoring of a preset time period, thereby realizing classification processing of errors, and processing experimental data according to different errors, which can effectively help users to observe in real time and adjust the operation content according to the errors, thereby realizing simultaneous measurement and inspection.

[0017] 2. A control method for a binding belt preload monitor of the present invention realizes synchronous real-time observation of error information by setting a Bluetooth communication module and cooperating with an internal error modulation circuit, so that the user can clearly understand the error changes and the operations that need to be performed.

[0018] 3. A control method for a binding belt preload monitor of the present invention realizes the clearing operation of accumulated errors and system data by setting a reset button on the outside of the monitor to connect the internal reset circuit and storage circuit, prevents backup data from occupying storage space, and realizes the effect of single-side single inspection and immediate elimination after use.

[0019] 4. A control method for a binding belt preload monitor of the present invention provides a prompt light ring on the outside of the monitor to connect the internal structure for data exchange, so that the monitoring personnel can perform corresponding operations by observing the prompt light during the process of increasing the preload, without the need to frequently check the mobile phone or other connected mobile devices, which greatly saves the user's debugging time and measurement time. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a flow chart of a control method of a binding belt pre-tightening force monitoring device of the present invention;

[0021] Figure 2 The present invention is a structural block diagram of a control method of a binding belt pre-tightening force monitoring instrument. DETAILED DESCRIPTION

[0022] The technical solution of the present invention is further specifically described below through embodiments and in conjunction with the accompanying drawings.

[0023] Embodiment 1:

[0024] A control method of a binding belt pre-tightening force monitoring device according to this embodiment is as follows: Figure 2 As shown, the specific structure of the application method includes the following contents:

[0025] An interconnected error modulation circuit and a pressure sensor are arranged in the monitor. The error modulation circuit includes a storage circuit. The signal receiving end of the storage circuit is connected to the signal output end of the pressure sensor to receive the pressure electrical signal. The reset end of the storage circuit is connected to the reset circuit to receive the reset signal. The reset circuit receiving end is electrically connected to the reset button to receive the reset signal. The error modulation circuit also includes a calculation circuit. The output end of the calculation circuit is respectively connected to the determination module and the receiving end of the storage circuit. The receiving end of the calculation circuit is connected to the pressure sensor, receives the pressure electrical signal and the period to obtain the data group of the change slope, transmits the data group to the storage circuit and the determination module, and sends an error classification signal to the determination module.

[0026] The output end of the determination module is connected to the signal modulation module, and the output end of the signal modulation module is electrically connected to the input end of the built-in Bluetooth module of the monitor. After receiving the error classification signal, the determination module transmits it to the modulation module, and the modulation module converts it into error category information and transmits it to the Bluetooth module. The Bluetooth module transmits the error category information to the mobile device end of the Bluetooth interconnection. A warning light ring is arranged around the power switch, and the power supply end of the warning light ring is connected to the power transmission end of the power module; the receiving end of the warning light ring is connected to the output end of the calculation module inside the monitor, and the calculation module compares the correction force signal with the preload force signal interval: if the correction force signal is less than the minimum value of the preload force signal interval, signal a is transmitted to the warning light ring, and the warning light ring receives signal a and displays yellow light; if it is in the preload force signal interval, signal B is transmitted to the warning light ring, and the warning light ring receives signal b and displays green light.

[0027] like Figure 1 As shown, the control method and process of the present invention specifically include the following steps:

[0028] 1. Clamp the monitor equipped with error modulation circuit and pressure sensor along the length direction of the static strap, and continue to tighten the strap until the pre-tightening force F is reached and then stop.

[0029] 2. The error modulation circuit receives the pressure electrical signal continuously transmitted by the pressure sensor, stores the pressure electrical signal with a monitoring period t in a preset monitoring period T, calculates and stores the change slope of the pressure electrical signal in each t period, and generates a data group by the calculation module;

[0030] If in the data set, within the T period, the slope variation range detected at each interval t period is within K min ~K max If the slope variation range and temperature drift error signal are between 0 and N, and the variation times are between 0 and N, the slope variation range and temperature drift error signal at this time are transmitted to the judgment module; if the slope variation range detected in each interval t cycle in the data group within the T period is between If the slope variation K2-K1 between two adjacent intervals t exceeds Then reduce the period t to Re-preset the monitoring period T.

[0031] 3. Classify the error signal and determine the error category based on the change slope, and modulate and compensate the calculation result according to the error category;

[0032] The error category information includes temperature drift error and force drift error; the Bluetooth module receives the preload force interval information transmitted by the mobile device, and transmits the preload force signal interval to the judgment module after modulation; when the judgment module determines that it is a temperature drift error, it transmits the error value and the correction signal to the calculation module, and the calculation module receives and corrects the generated correction force signal, and compares it with the preload force signal interval to generate a correction force signal.

[0033] If the correction force signal is within the preload force signal range, the end signal and the correction force signal are transmitted to the determination module; if the correction force signal is less than the preload force signal range, the force enhancement signal and the correction force signal are transmitted to the determination module; if the correction force signal is greater than the preload force signal range, the force reduction signal and the correction force signal are transmitted to the determination module.

[0034] The corrected force signal is converted by the signal modulation module and transmitted to the Bluetooth module, and the corrected pressure is displayed as F1 on the mobile device; when the judgment module determines that it is a force drift error, the relative position of the pressure sensor is changed by adjusting the displacement structure preset under the pressure sensor.

[0035] 4. After the monitoring is completed, press the reset button to end the measurement and turn off the power.

[0036] Embodiment 2:

[0037] The present embodiment is a control method for a binding belt preload monitor, and its applied structure is the same as that of the first embodiment. After expanding the first embodiment, its specific method flow includes the following contents:

[0038] 1. Connect the monitor equipped with error modulation circuit and pressure sensor along the length direction of the static strap, continue to tighten the strap and observe the status of the indicator light ring until the indicator light changes from yellow to green. It is considered that the preload force has reached the preset preload force range, that is, 100N~120N. Check the mobile phone to find that the preload force value at this time is 110N, then stop tightening the strap and let it stand.

[0039] 2. The pressure sensor continuously senses the preload force at this time and transmits it to the error modulation circuit in real time. The calculation circuit in the error modulation circuit stores the pressure electrical signal for 0.03S within the preset monitoring period of 2.7S, and calculates and stores the slope of the pressure electrical signal in each cycle. If in the data group, in the 2.7S period, the slope change range detected in each 0.03S period is between 1.5N / S and 2.4N / S, and the number of changes is between 0 and 5, then the slope change range and temperature drift error signal at this time are transmitted to the determination module; if in the data group in the 2.7S period, the slope change range detected in each 0.03S period is between 2.5N / S and 4.0N / S, and the number of changes is greater than 5, then the slope change range and force drift error signal at this time are transmitted to the determination module; if the slope change amount of two adjacent intervals of 0.03S exceeds 4.0N / S, the cycle is reduced by 0.03S to t1<0.015S and the period of 2.7S monitoring is reset.

[0040] 3. The error category information is divided into temperature drift error and force drift error; the Bluetooth module receives the preload range information transmitted by the mobile device, and transmits the preload signal range to the judgment module after modulation; the judgment module receives the calculation result and error signal from the calculation module, and transmits the error value and correction signal to the calculation module when it is determined to be a temperature drift error. The calculation module receives and corrects the generated correction force signal, and compares it with the preload signal range to generate a correction force signal; the correction force signal is converted by the signal modulation module and transmitted to the Bluetooth module, and the corrected pressure is displayed as 105N on the mobile device.

[0041] After comparison by the calculation module, the corrected pressure is within the preset preload range, so the end signal and the correction force signal are transmitted to the judgment module, and the judgment module transmits the corrected pressure 105N and the temperature drift error information to Bluetooth, which is finally displayed on the mobile phone. At the same time, a prompt to stop the operation is transmitted to the mobile phone.

[0042] It should be understood that the embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope limited by the appended claims of the application.

Claims

1. A control method for a binding belt preload monitoring device, characterized in that: include: S1: clamp the monitor equipped with the error modulation circuit and the pressure sensor along the length direction of the static strap, and continue to tighten the strap until the pre-tightening force F is reached and then stop; S2: The error modulation circuit includes a calculation circuit connected to a determination module, which receives the pressure electrical signal continuously transmitted by the pressure sensor, stores the pressure electrical signal in a monitoring period t during a preset monitoring period T, calculates and stores the change slope of the pressure electrical signal in each t period, and generates a data set; in the data set, within the T period, if the slope change range detected in each interval t period is within K min ~K max If the slope variation range detected at each interval t period is between 0 and N, the temperature drift error signal is transmitted to the judgment module; If the slope change K1-K2 between two adjacent intervals t exceeds Then reduce the period t to Re-preset the monitoring period T; S3: Classify the error signal and determine the error category according to the change slope, and modulate and compensate the calculation result according to the error category.

2. A method for controlling a binding belt preload monitor according to claim 1, characterized in that: S1.1: The error modulation circuit includes a storage circuit, wherein the signal receiving end of the storage circuit is connected to the signal output end of the pressure sensor to receive the pressure electrical signal; the reset end of the storage circuit is connected to the reset circuit to receive the reset signal, and the reset circuit receiving end is electrically connected to the reset button to receive the reset signal.

3. A control method for a binding belt preload monitor according to claim 1 or 2, characterized in that: S2.1: The error modulation circuit also includes a calculation circuit, and the output end of the calculation circuit is connected to the receiving end of the judgment module and the storage circuit respectively; the receiving end of the calculation circuit is connected to the pressure sensor, receives the pressure electrical signal and the period t to obtain a data group of the change slope, transmits the data group to the storage circuit and the judgment module, and sends an error classification signal to the judgment module.

4. A method for controlling a binding belt preload monitor according to claim 3, characterized in that: S2.2: Sending the error classification signal to the determination module also includes: transmitting to the determination module the slope variation range detected at every interval t cycles within the T time period in the data group.

5. A method for controlling a binding belt preload monitor according to claim 4, characterized in that: The output end of the determination module is connected to the signal modulation module, and the output end of the signal modulation module is electrically connected to the input end of the built-in Bluetooth module of the monitor. After receiving the error classification signal, the determination module transmits it to the modulation module, and the modulation module converts it into error category information and transmits it to the Bluetooth module. The Bluetooth module transmits the error category information to the mobile device end of the Bluetooth interconnection.

6. A control method for a binding belt preload monitor according to claim 5, characterized in that: The error category information includes temperature drift error and force drift error; the Bluetooth module receives the preload force interval information transmitted by the mobile device, and transmits the preload force signal interval to the determination module after modulation; S3.1: When the determination module determines that it is a temperature drift error, it transmits the error value and correction signal to the calculation circuit, and the calculation circuit receives and corrects the generated correction force signal, and compares it with the preload force signal interval to generate a correction force signal; S3.2: The corrected force signal is converted by the signal modulation module and transmitted to the Bluetooth module, and the corrected pressure is displayed as F1 on the mobile device; S3.3: When the determination module determines that it is a force drift error, the relative position of the pressure sensor is changed by adjusting the displacement structure preset below the pressure sensor.

7. A method for controlling a binding belt preload monitor according to claim 6, characterized in that: S3.1.1: If the correction force signal is within the preload force signal range, an end signal and a correction force signal are transmitted to the determination module; S3.1.2: If the correction force signal is smaller than the preload force signal interval, the force enhancement signal and the correction force signal are transmitted to the determination module; S3.1.3: If the correction force signal is larger than the preload force signal interval, the force reduction signal and the correction force signal are transmitted to the determination module.

8. A method for controlling a binding belt preload monitor according to claim 2, characterized in that: The power supply end of the pressure sensor is connected to the transmission end of the built-in power module in the monitor through a transformer circuit. The power module includes a built-in battery and an external solar panel. The monitoring instrument housing is provided with a solar panel on one side of which a power switch and a reset button are arranged in sequence. The power switch is electrically connected to the power module.

9. A method for controlling a binding belt pre-tightening force monitoring device according to claim 5, 6 or 8, characterized in that: A warning light ring is provided around the power switch, and the power supply end of the warning light ring is connected to the power transmission end of the power module; the receiving end of the warning light ring is connected to the output end of the calculation circuit inside the monitor, and the calculation circuit compares the correction force signal with the preload signal interval: if the correction force signal is less than the minimum value of the preload signal interval, signal a is transmitted to the warning light ring, and the warning light ring receives signal a and displays yellow light; if it is in the preload signal interval, signal B is transmitted to the warning light ring, and the warning light ring receives signal b and displays green light.

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