A method for calculating tension meter output value based on proportional value algorithm

Abstract

The application discloses a method for calculating tension meter output value based on proportional value algorithm, which comprises the following steps: collecting voltage values of two tension sensors of the tension meter under no-load and load calibration state of the tension meter and calibration value of the tension meter; judging the matching state of the two tension sensors and the tension meter according to the collected voltage values of the two tension sensors under no-load and load calibration state through proportional value algorithm; selecting a resultant force calculation method matched with the matching state of the two tension sensors to calculate resultant force value according to the matching state of the two tension sensors and the calibration value of the tension meter, wherein the resultant force value is the actual tension value output by the tension meter. The proportional value algorithm is combined with the calculation of the tension meter output value, so that when one of the tension sensors of the tension meter is in trouble, the tension meter output value can be accurately calculated through the proportional value algorithm, and the trouble tension sensor can be located and found, so that the maintenance personnel can carry out maintenance.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of tension gauge, in particular to a method for calculating output value of tension gauge based on proportional value algorithm. BACKGROUND

[0002] The tension gauge, also known as tension amplifier, is an instrument for connecting sensors to measure the tension value of an object. Since the existing tension gauge is internally provided with two independent tension sensors, and the tension gauge can only identify the combined force value signal of the two tension sensors, when one of the tension sensors of the tension gauge fails and is not connected with the tension gauge, the tension gauge cannot complete the output of the tension value, and thus cannot normally measure the tension value of the object. SUMMARY

[0003] The technical problem to be solved by the present application is that the existing tension gauge cannot normally measure the tension value of an object when one of the tension sensors is not connected with the tension gauge.

[0004] To solve the above technical problem, the present application provides a method for calculating output value of tension gauge based on proportional value algorithm, comprising:

[0005] Respectively collecting voltage values of two tension sensors of the tension gauge in unloaded and loaded calibration states of the tension gauge and a calibration value of the tension gauge;

[0006] According to the collected voltage values of the two tension sensors in unloaded and loaded calibration states, judging the connection state of the corresponding two tension sensors with the tension gauge through proportional value algorithm;

[0007] According to the connection state of the tension sensors with the tension gauge and the calibration value of the tension gauge, selecting a combined force calculation method matched with the connection state of the two tension sensors to calculate the combined force value, and the combined force value is the actual tension value output by the tension gauge.

[0008] Further, respectively collecting and recording the voltage values of the two tension sensors of the tension gauge in unloaded and loaded calibration states of the tension gauge and the calibration value of the tension gauge, further comprising:

[0009] Defining the two tension sensors as a first tension sensor and a second tension sensor respectively;

[0010] Respectively collecting and recording the unloaded voltage value V10 of the first tension sensor and the unloaded voltage value V20 of the second tension sensor at the current time in the unloaded state of the tension gauge;

[0011] In the tension table belt load calibration state, the current time first tension sensor belt load calibration voltage value V11 and the second tension sensor belt load calibration voltage value V21 are collected and recorded respectively.

[0012] Further, according to the collected voltage values of the two tension sensors under the conditions of no load and belt load calibration, the matching state of the corresponding two tension sensors and the tension table is judged by a proportional value algorithm, and further comprises:

[0013] The value of the voltage value increment V12 of the first tension sensor is the belt load calibration voltage value V11 of the first tension sensor minus the no load voltage value V10 of the first tension sensor;

[0014] The value of the voltage value increment V22 of the second tension sensor is the belt load calibration voltage value V21 of the second tension sensor minus the no load voltage value V20 of the second tension sensor.

[0015] Further, according to the collected voltage values of the two tension sensors under the conditions of no load and belt load calibration, the matching state of the corresponding two tension sensors and the tension table is judged by a proportional value algorithm, and further comprises:

[0016] If the value of the voltage value increment V12 of the first tension sensor is greater than 9 than the voltage value increment V22 of the second tension sensor, it is judged that the second tension sensor is not matched with the tension table, and the actual tension value output by the tension table is M1;

[0017] If the value of the voltage value increment V12 of the first tension sensor is less than 0.1 than the voltage value increment V22 of the second tension sensor, it is judged that the first tension sensor is not matched with the tension table, and the actual tension value output by the tension table is M2;

[0018] If the value of the voltage value increment V12 of the first tension sensor is greater than 0.1 than the voltage value increment V22 of the second tension sensor, it is judged that the first tension sensor and the second tension sensor are matched with the tension table, and the actual tension value output by the tension table is M3.

[0019] Further, if the value of the voltage value increment V12 of the first tension sensor is greater than 9 than the voltage value increment V22 of the second tension sensor, it is judged that the second tension sensor is not matched, and the actual tension value M1 output by the tension table is:

[0020] The actual tension value M1 output by the tension table is (the voltage value V12 of the first tension sensor-the voltage value V10 of the first tension sensor)*calibration value Z / the voltage value V12 of the first tension sensor.

[0021] Further, if the voltage value increment V12 of the first tension sensor is less than 0.1 than the voltage value increment V22 of the second tension sensor, it is judged that the first tension sensor is not connected, and the actual tension value M2 output by the tension meter is:

[0022] The actual tension value M2 output by the tension meter is (voltage value V22 of the second tension sensor-voltage value V20 of the second tension sensor)*calibration value Z / voltage value V22 of the second tension sensor.

[0023] Further, if the voltage value increment V12 of the first tension sensor is greater than 0.1 than the voltage value increment V22 of the second tension sensor, it is judged that the first tension sensor and the second tension sensor are connected with the tension meter, and the actual tension value M3 output by the tension meter is:

[0024] The actual tension value M3 output by the tension meter is (voltage value V12 of the first tension sensor-voltage value V10 of the first tension sensor)*calibration value Z / voltage value V12 of the first tension sensor+(voltage value V22 of the second tension sensor-voltage value V20 of the second tension sensor)*calibration value / voltage value V22 of the second tension sensor.

[0025] Further, in the tension meter under the condition of load calibration, the ratio of the initial value of the tension meter under the condition of load calibration to the full-scale value of the tension meter under the condition of load calibration is the calibration value Z of the tension meter.

[0026] Further, according to the voltage values of the two tension sensors under the conditions of no load and load calibration, the connection state of the two tension sensors with the tension meter is judged by a proportional value algorithm, and then the method further comprises:

[0027] After judging the connection state of the two tension sensors with the tension meter, if one of the tension sensors is not connected with the tension meter, the tension meter sends an alarm information and gives the information of the tension sensor not connected with the tension meter.

[0028] The method for calculating the output value of the tension meter based on the proportional value algorithm has the following advantages compared with the prior art:

[0029] The voltage values of two tension sensors of the tension gauge in the empty load and load calibration states of the tension gauge and the calibration value of the tension gauge are collected respectively; the matching state of the two tension sensors and the tension gauge is judged by the proportional value algorithm according to the collected voltage values of the two tension sensors in the empty load and load calibration states; the resultant force calculation method matched with the matching state of the two tension sensors is selected to calculate the resultant force value according to the matching state of the tension sensor and the tension gauge and the calibration value of the tension gauge, and the resultant force value is the actual tension value output by the tension gauge. The proportional value algorithm is combined with the calculation of the output value of the tension gauge, when one of the tension sensors of the tension gauge has a problem, the output value of the tension gauge can also be accurately calculated by the proportional value algorithm, and the problem tension sensor can be located and found, so as to facilitate the maintenance personnel to maintain. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 is a flowchart of a method for calculating the output value of a tension gauge based on a proportional value algorithm in an embodiment of the application;

[0031] Figure 2 is a flowchart of a method for calculating the output value of a tension gauge based on a proportional value algorithm in an embodiment of the application;

[0032] Figure 3 is a flowchart of a method for calculating the output value of a tension gauge based on a proportional value algorithm in an embodiment of the application;

[0033] Figure 4 is a flowchart of a method for calculating the output value of a tension gauge based on a proportional value algorithm in an embodiment of the application;

[0034] Figure 5 is a structural schematic diagram of a tension gauge in an embodiment of the application. DETAILED DESCRIPTION

[0035] The specific embodiments of the application will be further described in detail below with reference to the accompanying drawings and embodiments. The following embodiments are used to illustrate the application, but are not used to limit the scope of the application.

[0036] In the description of the present application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0037] The terms “second” and “second” are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with “second” or “second” may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, “multiple” means two or more.

[0038] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0039] like Figure 1 As shown in the embodiments of this application, a method for calculating the output value of a tension meter based on a proportionality algorithm is provided, comprising: acquiring the voltage values ​​of the two tension sensors of the tension meter under no-load and load calibration states, and the calibration value of the tension meter; determining the connection state of the two tension sensors with the tension meter using a proportionality algorithm based on the acquired voltage values ​​of the two tension sensors under no-load and load calibration states; and calculating the resultant force value by selecting a resultant force calculation method that matches the connection state of the two tension sensors based on the connection state of the tension sensors with the tension meter and the calibration value of the tension meter, wherein the resultant force value is the actual tension value output by the tension meter.

[0040] Specifically, the tension gauge has a built-in processor, which includes a data acquisition unit and a processing unit. The data acquisition unit acquires the voltage values ​​of the two tension sensors of the tension gauge under no-load and load calibration conditions, as well as the calibration value of the tension gauge. The processing unit first determines the connection status of the two tension sensors with the tension gauge based on the acquired voltage values ​​of the two tension sensors under no-load and load calibration conditions, using a proportional value algorithm. Then, based on the connection status of the tension sensors with the tension gauge and the calibration value of the tension gauge, the processing unit selects a resultant force calculation method that matches the connection status of the two tension sensors to calculate the resultant force value, which is the actual tension value output by the tension gauge.

[0041] Furthermore, this invention combines the proportional value algorithm with the calculation of the tension meter output value. When one of the tension sensors in the tension meter malfunctions, the proportional value algorithm can accurately calculate the output value of the tension meter and locate the faulty tension sensor, facilitating maintenance personnel to repair it.

[0042] As Figure 2 shown in the embodiments of the present application, a method for calculating the output value of a tension meter based on a proportional value algorithm is provided, the voltage values of two tension sensors of the tension meter in the unloaded and loaded calibration states of the tension meter are collected and recorded respectively, and the calibration value of the tension meter is also collected and recorded, which further comprises the following steps: the two tension sensors are defined as a first tension sensor and a second tension sensor respectively; in the unloaded state of the tension meter, the unloaded voltage value V10 of the first tension sensor and the unloaded voltage value V20 of the second tension sensor are collected and recorded respectively; in the loaded calibration state of the tension meter, the loaded calibration voltage value V11 of the first tension sensor and the loaded calibration voltage value V21 of the second tension sensor are collected and recorded respectively.

[0043] Specifically, the two tension sensors are defined as a first tension sensor and a second tension sensor respectively according to their positions, and the positions are directly bound to the serial numbers of the tension sensors, so that in the subsequent calculation, it can be found out which tension sensor has a problem; in the unloaded state of the tension meter, the unloaded voltage value V10 of the first tension sensor and the unloaded voltage value V20 of the second tension sensor are collected and recorded respectively; in the loaded calibration state of the tension meter, the loaded calibration voltage value V11 of the first tension sensor and the loaded calibration voltage value V21 of the second tension sensor are collected and recorded respectively.

[0044] As Figure 3 shown in the embodiments of the present application, a method for calculating the output value of a tension meter based on a proportional value algorithm is provided, according to the voltage values of the two tension sensors collected in the unloaded and loaded calibration states, the connection state of the corresponding two tension sensors and the tension meter is judged by the proportional value algorithm, which further comprises the following steps: the value of the voltage value increment V12 of the first tension sensor is the loaded calibration voltage value V11 of the first tension sensor minus the unloaded voltage value V10 of the first tension sensor; the value of the voltage value increment V22 of the second tension sensor is the loaded calibration voltage value V21 of the second tension sensor minus the unloaded voltage value V20 of the second tension sensor.

[0045] Specifically, in order to calculate the subsequent process, the value of the voltage value increment V12 of the first tension sensor and the value of the voltage value increment V22 of the second tension sensor are calculated in advance.

[0046] As Figure 4As shown, in the embodiment of the present application, a method for calculating the tension table output value based on the proportional value algorithm is provided, according to the voltage values of the two tension sensors under the no-load and load calibration, the proportional value algorithm is used to judge the connection state of the corresponding two tension sensors and the tension table, and the method further comprises the following steps: if the voltage value increment V12 of the first tension sensor is greater than 9 than the voltage value increment V22 of the second tension sensor, it is judged that the second tension sensor is not connected with the tension table, and the actual tension value output by the tension table is M1; if the voltage value increment V12 of the first tension sensor is less than 0.1 than the voltage value increment V22 of the second tension sensor, it is judged that the first tension sensor is not connected with the tension table, and the actual tension value output by the tension table is M2; if the voltage value increment V12 of the first tension sensor is greater than 0.1 than the voltage value increment V22 of the second tension sensor, it is judged that the first tension sensor and the second tension sensor are both connected with the tension table, and the actual tension value output by the tension table is M3.

[0047] Specifically, here, the specific conditions under which the tension table can normally work only include three kinds, the first kind is that the first tension sensor is not connected with the tension table, the second kind is that the second tension sensor is not connected with the tension table, and the third kind is that the first tension sensor and the second tension sensor are both connected with the tension table. Only in the above three cases, the tension table can normally output the tension value, if the first tension sensor and the second tension sensor are both not connected with the tension table, the tension table cannot output the tension value, and other tension tables need to be used.

[0048] In the embodiment of the present application, a method for calculating the tension table output value based on the proportional value algorithm is provided, if the voltage value increment V12 of the first tension sensor is greater than 9 than the voltage value increment V22 of the second tension sensor, it is judged that the second tension sensor is not connected, and the actual tension value M1 output by the tension table is: the actual tension value M1 output by the tension table = (the voltage value V12 of the first tension sensor - the voltage value V10 of the first tension sensor) * the calibration value Z / the voltage value V12 of the first tension sensor.

[0049] Specifically, the actual tension value M1 output by the tension table = (the voltage value V12 of the first tension sensor - the voltage value V10 of the first tension sensor) * the calibration value Z / the voltage value V12 of the first tension sensor is simplified as M1 = (V12 - V10) * Z / V12.

[0050] In the embodiment of the present application, a method for calculating the output value of a tension meter based on a proportional value algorithm is provided. If the voltage value increment V12 of the first tension sensor is less than 0.1 than the voltage value increment V22 of the second tension sensor, it is determined that the first tension sensor is not connected. The actual tension value M2 output by the tension meter is: the actual tension value M2 output by the tension meter = (the voltage value V22 of the second tension sensor - the voltage value V20 of the second tension sensor) * the calibration value Z / the voltage value V22 of the second tension sensor.

[0051] Specifically, the actual tension value M2 output by the tension meter = (the voltage value V22 of the second tension sensor - the voltage value V20 of the second tension sensor) * the calibration value Z / the voltage value V22 of the second tension sensor is simplified as M2 = (V22 - V20) * Z / V22.

[0052] In the embodiment of the present application, a method for calculating the output value of a tension meter based on a proportional value algorithm is provided. If the voltage value increment V12 of the first tension sensor is greater than 0.1 than the voltage value increment V22 of the second tension sensor, it is determined that the first tension sensor and the second tension sensor are both connected to the tension meter. The actual tension value M3 output by the tension meter is: the actual tension value M3 output by the tension meter = (the voltage value V12 of the first tension sensor - the voltage value V10 of the first tension sensor) * the calibration value Z / the voltage value V12 of the first tension sensor + (the voltage value V22 of the second tension sensor - the voltage value V20 of the second tension sensor) * the calibration value / the voltage value V22 of the second tension sensor.

[0053] Specifically, the actual tension value M3 output by the tension meter = (the voltage value V12 of the first tension sensor - the voltage value V10 of the first tension sensor) * the calibration value Z / the voltage value V12 of the first tension sensor + (the voltage value V22 of the second tension sensor - the voltage value V20 of the second tension sensor) * the calibration value / the voltage value V22 of the second tension sensor is simplified as M3 = (V12 - V10) * Z / V12 + (V22 - V20) * Z / V22, that is, M3 = M1 + M2.

[0054] In the embodiment of the present application, a method for calculating the output value of a tension meter based on a proportional value algorithm is provided. In the tension meter calibration state, the ratio of the initial value of the tension meter in the calibration state to the full-scale value of the tension meter in the calibration state is the calibration value Z of the tension meter.

[0055] Specifically, the calibration value Z is a value calculated by the tension meter in the calibration state, and specifically, the calibration value Z of the tension meter is obtained by the ratio of the initial value of the tension meter in the calibration state to the full-scale value of the tension meter in the calibration state.

[0056] In the embodiment of the present application, a method for calculating tension meter output value based on proportional value algorithm is provided, the voltage values of two tension sensors under no-load and load calibration are collected, the matching state of the two tension sensors and the tension meter is judged by the proportional value algorithm, and then the following steps are included: after judging the matching state of the two tension sensors and the tension meter, if one of the tension sensors is not matched with the tension meter, the tension meter sends an alarm information and gives the information of the tension sensor not matched with the tension meter.

[0057] Specifically, after judging the matching state of the two tension sensors and the tension meter, if one of the tension sensors is not matched with the tension meter, the alarm unit in the tension meter sends an alarm information and gives the information of the tension sensor not matched with the tension meter, so that the maintenance personnel can judge which sensor is faulty, so as to facilitate the timely maintenance of the maintenance personnel.

[0058] In summary, the embodiment of the present application provides a method for calculating tension meter output value based on proportional value algorithm, which includes: collecting the voltage values of two tension sensors of a tension meter under no-load and load calibration state of the tension meter and the calibration value of the tension meter; judging the matching state of the two tension sensors and the tension meter according to the collected voltage values of the two tension sensors under no-load and load calibration; and selecting a resultant force calculation method matched with the matching state of the two tension sensors to calculate the resultant force value according to the matching state of the tension sensors and the tension meter and the calibration value of the tension meter, wherein the resultant force value is the actual tension value output by the tension meter. The proportional value algorithm is combined with the calculation of the tension meter output value, when one of the tension sensors of the tension meter is faulty, the tension meter output value can be accurately calculated by the proportional value algorithm, and the faulty tension sensor can be located, so as to facilitate the maintenance of the maintenance personnel.

[0059] Finally, it should be noted that: obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalent technologies, the present application also intends to include these modifications and variations.

[0060] The above description is only one embodiment of the present application, but cannot limit the scope of the present application, and any structural changes made according to the present application should be considered as falling within the scope of the present application and being restricted. Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the system described above and the related description can refer to the corresponding process in the foregoing method embodiment, which will not be described here.

[0061] The term "comprising" or any other similar word is intended to encompass the inclusion of one or more steps, features, or elements but not to the exclusion of any other steps, features, or elements. The term "comprising" therefore indicates that the inclusion of one or more steps, features, or elements is not a requirement for the process, method, article, or apparatus / apparatus to fall within the scope of the present application.

[0062] The technical solutions of the present application have been described in combination with the further embodiments shown in the drawings, but it is easy for those skilled in the art to understand that the protection scope of the present application is obviously not limited to these specific embodiments. Those skilled in the art can make equivalent changes or replacements to the related technical features without departing from the principles of the present application, and the technical solutions after the changes or replacements will all fall within the protection scope of the present application.

[0063] The above description is merely preferred embodiments of the present application, but not intended to limit the protection scope of the present application.

Claims

1. A method for calculating a tension meter output value based on a proportional value algorithm, characterized by, The method comprises the following steps: Collecting voltage values of two tension sensors of the tension meter in unloaded and loaded calibration states and a calibration value of the tension meter; According to the collected voltage values of the two tension sensors in unloaded and loaded calibration states, determining the connection state of the two tension sensors and the tension meter by a proportional value algorithm; According to the connection state of the tension sensors and the tension meter and the calibration value of the tension meter, selecting a force calculation method matching the connection state of the two tension sensors to calculate a force value, which is the actual tension value output by the tension meter; Collecting and recording the voltage values of the two tension sensors of the tension meter in unloaded and loaded calibration states and the calibration value of the tension meter, and the method further comprises the following steps: Defining the two tension sensors as a first tension sensor and a second tension sensor respectively; Collecting and recording the unloaded voltage value V10 of the first tension sensor and the unloaded voltage value V20 of the second tension sensor at the current time in the unloaded state of the tension meter; Collecting and recording the loaded calibration voltage value V11 of the first tension sensor and the loaded calibration voltage value V21 of the second tension sensor at the current time in the loaded calibration state of the tension meter; According to the collected voltage values of the two tension sensors in unloaded and loaded calibration states, determining the connection state of the two tension sensors and the tension meter by a proportional value algorithm, and the method further comprises the following steps: The voltage value increment V12 of the first tension sensor is the loaded calibration voltage value V11 of the first tension sensor minus the unloaded voltage value V10 of the first tension sensor; The voltage value increment V22 of the second tension sensor is the loaded calibration voltage value V21 of the second tension sensor minus the unloaded voltage value V20 of the second tension sensor; According to the collected voltage values of the two tension sensors in unloaded and loaded calibration states, determining the connection state of the two tension sensors and the tension meter by a proportional value algorithm, and the method further comprises the following steps: If the ratio of the voltage value increment V12 of the first tension sensor to the voltage value increment V22 of the second tension sensor is greater than 9, it is determined that the second tension sensor is not connected with the tension meter, and the actual tension value output by the tension meter is M1; If the ratio of the voltage value increment V12 of the first tension sensor to the voltage value increment V22 of the second tension sensor is less than 0.1, it is determined that the first tension sensor is not connected with the tension meter, and the actual tension value output by the tension meter is M2; If the voltage value increment V12 of the first tension sensor is greater than 0.1 than the voltage value increment V22 of the second tension sensor, it is determined that both the first tension sensor and the second tension sensor are connected with the tension meter, and the actual tension value output by the tension meter is M3; In the loaded calibration state of the tension meter, the ratio of the loaded calibration initial value of the tension meter to the loaded calibration full-scale value of the tension meter is the calibration value Z of the tension meter.

2. The method of claim 1, wherein the output value of the tension meter is calculated based on the proportional value algorithm, and If the voltage increment V12 of the first tension sensor is greater than 9 than the voltage increment V22 of the second tension sensor, it is determined that the second tension sensor is not connected, and the actual tension value M1 output by the tension meter is: The actual tension value M1 output by the tension meter is (the voltage increment V12 of the first tension sensor-the no-load voltage value V10 of the first tension sensor) * the calibration value Z / the voltage increment V12 of the first tension sensor.

3. The method of claim 1, wherein the output value of the tension meter is calculated based on the proportional value algorithm, and If the voltage increment V12 of the first tension sensor is less than 0.1 than the voltage increment V22 of the second tension sensor, it is determined that the first tension sensor is not connected, and the actual tension value M2 output by the tension meter is: The actual tension value M2 output by the tension meter is (the voltage increment V22 of the second tension sensor-the no-load voltage value V20 of the second tension sensor) * the calibration value Z / the voltage increment V22 of the second tension sensor.

4. The method of claim 1, wherein the output value of the tension meter is calculated based on the proportional value algorithm, and If the voltage increment V12 of the first tension sensor is greater than 0.1 than the voltage increment V22 of the second tension sensor, it is determined that the first tension sensor and the second tension sensor are connected to the tension meter, and the actual tension value M3 output by the tension meter is: The actual tension value M3 output by the tension meter is (the voltage increment V12 of the first tension sensor-the no-load voltage value V10 of the first tension sensor) * the calibration value Z / the voltage increment V12 of the first tension sensor+(the voltage increment V22 of the second tension sensor-the no-load voltage value V20 of the second tension sensor) * the calibration value / the voltage increment V22 of the second tension sensor.

5. The method of claim 1, wherein the output value of the tension meter is calculated based on the proportional value algorithm, and According to the collected voltage values of the two tension sensors under no-load and load calibration, the connection state of the corresponding two tension sensors and the tension meter is determined by the proportional value algorithm, and then it further includes: After determining the connection state of the two tension sensors and the tension meter, if one of the tension sensors is not connected to the tension meter, the tension meter sends an alarm information and gives the information of the tension sensor not connected to the tension meter.

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