Calibration test system and method for electric stapler

Abstract

The present invention relates to the technical field of calibration and testing of electric staplers, and in particular to a calibration and testing system and method for an electric stapler, comprising the following steps: S1. data acquisition; S2. data calculation and conversion; S3. data calibration; S4. operation judgment; S5. abnormality identification; the present invention provides a calibration and testing system and method for an electric stapler, which is simple in calibration and testing, can accurately identify various abnormal situations, and can accurately judge whether the battery power is sufficient to support a complete stapler operation.

Description

Technical Field

[0001] The present invention relates to the technical field of electric stapler calibration and testing, and in particular to a calibration and testing system and method for an electric stapler. Background Art

[0002] The main faults of electric staplers include stuck slider, poor staple formation, inability to fire / partially, damaged / falling parts, difficulty in opening / closing, power failure due to insufficient power during operation, etc. In particular, when abnormal conditions occur, no prompt information is provided, and the operation continues, which causes great safety hazards. In order to avoid the above safety hazards and reduce medical accidents, electric staplers need to be tested and calibrated.

[0003] At present, the existing electric stapler calibration test method has the following shortcomings: (1) Each electric stapler is tested and calibrated manually each time before leaving the factory, which is time-consuming, labor-intensive and inefficient. (2) The identification of abnormal conditions mainly relies on real-time acquisition of a set of motor currents, then taking the average value, and finally comparing the average value with the threshold. This method cannot effectively identify complex abnormal phenomena, has low reliability, and cannot perform more complex analysis of the motor current signal. (3) The judgment of whether the battery power is sufficient to support the operation of the electric stapler is mainly based on whether the real-time detected battery voltage is close to the lower critical value. Since the battery voltage is unstable during the operation of the motor, it is easy to cause misjudgment and has low reliability. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the deficiencies in the prior art and provide a calibration and testing system and method for an electric stapler that is simple to calibrate and test, accurately identifies various abnormal conditions, and accurately determines whether the battery power is sufficient to support a complete stapler operation.

[0005] The technical solution adopted by the present invention to solve the technical problem is: a calibration test method for an electric stapler, comprising the following steps:

[0006] S1. Data acquisition: The PC host selects the electric stapler to be calibrated and commands it to perform a complete stapler operation in accordance with the custom CAN bus protocol. The microprocessor in the electric stapler monitors the motor current data, motor encoder data and battery voltage data, and uploads them to the PC host at regular intervals.

[0007] S2. Data calculation and conversion: Calculate the energy consumption required for a complete matching operation based on the acquired motor current data, motor encoder data and battery voltage data , the transmission ratio of motor rotation and slider linear motion , and at the same time, the motor current time curve is subjected to Fourier transformation to obtain the motor current amplitude spectrum diagram;

[0008] S3 data calibration: the data in step S2 is transmitted to the selected electric stapler and stored in the memory chip of the electric stapler;

[0009] S4 operation judgment: according to the calibration of a complete anastomosis operation required energy consumption W to determine the current remaining power electric stapler can complete a complete anastomosis operation;

[0010] S5. Abnormal identification: The microprocessor in the electric stapler monitors the motor current data, motor encoder data and battery voltage data in real time during the stapler operation, and uses the motor encoder count value, combined with the calibrated transmission ratio of the motor rotation and the slider linear motion. Calculate the linear motion speed of the slider; at the same time, the motor current time curve is converted into a motor current amplitude spectrum through Fourier transformation, and then compared with the calibrated motor current amplitude spectrum to identify whether there is any abnormality.

[0011] Furthermore, the energy consumption required for a complete anastomosis operation in step S2 is The formula is as follows:

[0012]

[0013] in, Indicates the time it takes for an electric stapler to complete a single staple operation. It indicates the real-time dynamic value of the motor current during the operation of the electric stapler. It indicates the real-time dynamic value of the battery voltage during the operation of the electric stapler. Indicates time.

[0014] Furthermore, the transmission ratio of the motor rotation and the slider linear motion in step S2 is The formula is as follows:

[0015]

[0016] in, Indicates the linear motion speed of the slider, Indicates the motor speed, Indicates the linear travel length of the slider. Indicates the end value of the motor encoder count. Indicates the starting value of the motor encoder count.

[0017] Furthermore, the Fourier transform formula in step S2 is as follows:

[0018]

[0019] in, Indicates frequency, represents the current-time curve function, represents a complex function.

[0020] A calibration test system using the above-mentioned electric stapler calibration test method includes a PC host computer, a CAN communication card, a CAN hub and a plurality of electric staplers, wherein the PC host computer is connected to the CAN communication card, and the CAN communication card is respectively connected to the plurality of electric staplers through the CAN hub.

[0021] Furthermore, the electric stapler includes a microprocessor, a motor encoder module, a motor current acquisition module, a battery voltage acquisition module, a motor drive module and a power module. The microprocessor is connected to the CAN hub via a CAN communication port, and the microprocessor is respectively connected to the motor encoder module, the motor current acquisition module, the battery voltage acquisition module, the motor drive module and the power module.

[0022] Furthermore, the electric stapler also includes a switch quantity acquisition module, and the switch quantity acquisition module is connected to the microprocessor.

[0023] The beneficial effects of the present invention are:

[0024] (1) The present invention calculates the energy consumption required for a complete stapling operation based on the motor current data, motor encoder data and battery voltage data of the electric stapler to be calibrated. , the transmission ratio of motor rotation and slider linear motion At the same time, the motor current time curve is transformed into a motor current amplitude spectrum diagram through Fourier transformation, and the above data is stored in the electric stapler to be calibrated. When operating, the remaining power of the electric stapler is compared with the energy consumption required for a complete stapler operation. , to determine whether the remaining power is sufficient to support a complete matching operation, which is more comprehensive, accurate and reliable than judging whether the battery voltage is close to the lower critical value. During the operation, the real-time converted motor current amplitude spectrum diagram is compared with the calibrated motor current amplitude spectrum diagram, which can intuitively and accurately identify various abnormalities, significantly reducing the probability of medical accidents and further improving reliability.

[0025] (2) The present invention uses a PC host computer, a CAN communication card and a CAN hub to simultaneously control multiple electric staplers for testing and calibration. There is no need to manually press buttons to operate the electric staplers, which greatly improves work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0027] Figure 1 It is a flow chart of the calibration test method of the electric stapler in the present invention;

[0028] Figure 2 It is a battery discharge curve graph;

[0029] Figure 3 It is the transformer no-load current waveform;

[0030] Figure 4 It is the transformer no-load current amplitude spectrum diagram;

[0031] Figure 5 It is a framework diagram of the electric stapler calibration test system in the present invention.

[0032] In the figure: 100, PC host computer; 200, CAN communication card; 300, CAN hub; 400, electric stapler; 410, microprocessor; 420, motor encoder module; 430, motor current acquisition module; 440, battery voltage acquisition module; 450, motor drive module; 460, power module; 470, CAN communication port; 480, switch quantity acquisition module. DETAILED DESCRIPTION

[0033] The present invention will now be further described in conjunction with the accompanying drawings and preferred embodiments. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0034] Example 1

[0035] like Figure 1 As shown, a calibration test method for an electric stapler comprises the following steps:

[0036] S1. Data acquisition: The PC host computer 100 selects the electric stapler 400 to be calibrated, and commands it to operate normally for a complete stapler operation according to the customized CAN bus protocol. The microprocessor 410 in the electric stapler 400 monitors the motor current data, motor encoder data and battery voltage data, and uploads them to the PC host computer 100 at regular intervals.

[0037] S2. Data calculation and conversion: Calculate the energy consumption required for a complete matching operation based on the acquired motor current data, motor encoder data and battery voltage data , the transmission ratio of motor rotation and slider linear motion , and at the same time, the motor current time curve is Fourier transformed to obtain the motor current amplitude spectrum.

[0038] S3. Data calibration: The data in step S2 is transmitted to the selected electric stapler 400 and stored in the storage chip of the electric stapler 400.

[0039] S4. Operation judgment: According to the calibrated energy consumption W required for a complete anastomosis operation, it is judged whether the electric stapler 400 can complete a complete anastomosis operation under the current remaining power.

[0040] After the calibrated electric stapler 400 is powered on, the self-learning calibration data is read from the storage chip and parameter configuration is performed. If it is determined that the remaining power of the battery in the electric stapler 400 cannot support a complete stapling operation, an error is reported and a battery replacement is prompted.

[0041] S5. Abnormal identification: The microprocessor 410 in the electric stapler 400 monitors the motor current data, motor encoder data and battery voltage data in real time during the stapler operation, and uses the motor encoder count value, combined with the calibrated transmission ratio of the motor rotation and the linear motion of the slider. Calculate the linear motion speed of the slider; at the same time, the motor current time curve is converted into a motor current amplitude spectrum through Fourier transformation, and then compared with the calibrated motor current amplitude spectrum to identify whether there is any abnormality.

[0042] The energy consumption required for a complete stapling operation is calculated based on the motor current data, motor encoder data and battery voltage data of the electric stapler 400 to be calibrated. , the transmission ratio of motor rotation and slider linear motion At the same time, the motor current time curve is transformed into a motor current amplitude spectrum diagram through Fourier transformation, and the above data is stored in the electric stapler 400 to be calibrated. When operating, the remaining battery power in the electric stapler 400 is compared with the energy consumption required for a complete stapler operation. , to determine whether the remaining power is sufficient to support a complete matching operation, which is more comprehensive, accurate and reliable than judging whether the battery voltage is close to the lower critical value. During the operation, the real-time converted motor current amplitude spectrum diagram is compared with the calibrated motor current amplitude spectrum diagram, which can intuitively and accurately identify various abnormalities, significantly reducing the probability of medical accidents and further improving reliability.

[0043] Energy consumption required for a complete anastomosis operation in step S2 The formula is as follows:

[0044]

[0045] in, Indicates the time for a complete stapling operation of the electric stapler 400. It indicates the real-time dynamic value of the motor current during the operation of the electric stapler 400. It indicates the real-time dynamic value of the battery voltage during the operation of the electric stapler 400. Indicates time.

[0046] like Figure 2 As shown, combined with the discharge curve provided by the battery manufacturer, it is possible to determine whether the remaining power is sufficient as follows:

[0047] For example, a 1000mAh battery has a voltage detection of 11.37V after being plugged in, which means that 40% of the power is left. The remaining power = 1000mAh*40% = 400mAh.

[0048] If the energy consumption required for a complete anastomosis operation is calculated in step S3 If the battery is 450mAh, then the remaining power is insufficient to support a complete matching operation.

[0049] The transmission ratio of the motor rotation and the slider linear motion in step S2 The formula is as follows:

[0050]

[0051] in, Indicates the linear motion speed of the slider, Indicates the motor speed, Indicates the linear travel length of the slider. Indicates the end value of the motor encoder count. Indicates the starting value of the motor encoder count.

[0052] The transmission ratio of conventional electric staplers is obtained through theoretical calculation of mechanical structure. Due to the assembly error of each electric stapler, the motor encoder consistency and motor consistency have errors, resulting in very inaccurate theoretical calculation values. In order to accurately control the speed, an accurate transmission ratio is required.

[0053] The Fourier transform formula in step S2 is as follows:

[0054]

[0055] in, Indicates frequency, represents the current-time curve function, represents a complex function.

[0056] The PC host computer 100 performs Fourier transform on the motor current-time curve of the electric stapler 400, converts the time-current signal into a frequency-current diagram, that is, transforms from the time domain to the frequency domain, and accurately and quantitatively describes the signal through a spectrum (including amplitude spectrum, phase spectrum and power spectrum).

[0057] For example, Figure 3The transformer no-load current waveform shown in the figure has time as the horizontal axis and current amplitude as the vertical axis. It is difficult to see any pattern. However, after Fourier transformation, an amplitude spectrum can be obtained, such as Figure 4 As shown, the horizontal axis is frequency and the vertical axis is current amplitude. It can be clearly seen that there are few high-frequency signals and the main focus is on low-frequency signals.

[0058] Example 2

[0059] like Figure 5 As shown, a calibration test system using the calibration test method of the electric stapler described in Example 1 includes a PC host computer 100, a CAN communication card 200, a CAN hub 300, and a plurality of electric staplers 400. The PC host computer 100 is connected to the CAN communication card 200, and the CAN communication card 200 is respectively connected to the plurality of electric staplers 400 through the CAN hub 300. Through the configuration of the PC host computer 100, the CAN communication card 200, and the CAN hub 300, the PC host computer 100 can control a plurality of electric staplers 400 for testing and calibration at the same time, without manually pressing buttons to control the electric staplers 400, which greatly improves the work efficiency.

[0060] Specifically, the PC host computer 100 can control the system operation during the test and calibration process, and display the internal operating data of the electric stapler 400, such as motor current, battery voltage, encoder count value, operating time, switch status, etc.; the CAN hub 300 connects all CAN nodes; the CAN communication card 200 can connect up to 256 CAN nodes.

[0061] The electric stapler 400 includes a microprocessor 410, a motor encoder module 420, a motor current acquisition module 430, a battery voltage acquisition module 440, a motor drive module 450, and a power module 460. The microprocessor 410 is connected to the CAN hub 300 via a CAN communication port 470. The microprocessor 410 is respectively connected to the motor encoder module 420, the motor current acquisition module 430, the battery voltage acquisition module 440, the motor drive module 450, and the power module 460. Specifically, the electric stapler 400 also includes a switch quantity acquisition module 480, which is connected to the microprocessor 410.

[0062] Among them, the microprocessor 410 detects various data, processes various data and executes motion control algorithm logic; the motor encoder module 420 counts the motor encoder to calculate the number of motor rotations and the rotation speed; the motor current acquisition module 430 detects the motor current value when the motor is running; the battery voltage acquisition module 440 acquires the battery voltage value; the motor drive module 450 drives the motor to rotate and drives the slider to move in a straight line through the transmission component; the switch quantity acquisition module 480 acquires the status of each digital switch quantity in the system.

[0063] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with this technology to understand the content of the present invention and implement it. They cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A calibration test method for an electric stapler, characterized in that: The steps include: S1. Data acquisition: The PC host computer (100) selects the electric stapler (400) to be calibrated, and commands it to operate normally for a complete stapling operation according to the custom CAN bus protocol. The microprocessor (410) in the electric stapler (400) monitors the motor current data, the motor encoder data and the battery voltage data, and uploads them to the PC host computer (100) at regular intervals. S2. Data calculation and conversion: Calculate the energy consumption required for a complete matching operation based on the acquired motor current data, motor encoder data and battery voltage data , the transmission ratio of motor rotation and slider linear motion , and at the same time, the motor current time curve is subjected to Fourier transformation to obtain the motor current amplitude spectrum diagram; S3. Data calibration: transmitting the data in step S2 to the selected electric stapler (400) and storing it in a memory chip of the electric stapler (400); S4 operation judgment: according to the energy consumption W required for a complete anastomosis operation, the remaining power of the electric stapler (400) is determined to be able to complete a complete anastomosis operation; S5. Abnormal identification: The microprocessor (410) in the electric stapler (400) monitors the motor current data, motor encoder data and battery voltage data in real time during the stapler operation, and detects the motor current data, motor encoder data and battery voltage data in real time through the motor encoder count value, combined with the calibrated transmission ratio of the motor rotation and the linear motion of the slider. Calculate the speed of the slider's linear motion; at the same time, the motor current time curve is converted into a motor current amplitude spectrum diagram through Fourier transformation, and then compared with the calibrated motor current amplitude spectrum diagram to identify whether there is an abnormality.

2. The calibration test method of the electric stapler according to claim 1, characterized in that: The energy consumption required for a complete anastomosis operation in step S2 The formula is as follows: in, Indicates the time required for a complete anastomosis operation of the electric stapler (400). Indicates the real-time dynamic value of the motor current during the operation of the electric stapler (400). Indicates the real-time dynamic value of the battery voltage during the operation of the electric stapler (400). Indicates time.

3. The calibration test method of the electric stapler according to claim 1, characterized in that: The transmission ratio of the motor rotation and the slider linear motion in step S2 is The formula is as follows: in, Indicates the linear motion speed of the slider, Indicates the motor speed, Indicates the linear travel length of the slider. Indicates the end value of the motor encoder count. Indicates the starting value of the motor encoder count.

4. The calibration test method of the electric stapler according to claim 1, characterized in that: The Fourier transform formula in step S2 is as follows: in, Indicates frequency, represents the current-time curve function, represents a complex function.

5. A calibration test system using the calibration test method of the electric stapler according to any one of claims 1 to 4, characterized in that: The device comprises a PC host computer (100), a CAN communication card (200), a CAN hub (300), and a plurality of electric staplers (400), wherein the PC host computer (100) is connected to the CAN communication card (200), and the CAN communication card (200) is respectively connected to the plurality of electric staplers (400) via the CAN hub (300).

6. The calibration test system according to claim 5, characterized in that: The electric stapler (400) comprises a microprocessor (410), a motor encoder module (420), a motor current acquisition module (430), a battery voltage acquisition module (440), a motor drive module (450) and a power module (460). The microprocessor (410) is connected to a CAN hub (300) via a CAN communication port (470), and the microprocessor (410) is respectively connected to the motor encoder module (420), the motor current acquisition module (430), the battery voltage acquisition module (440), the motor drive module (450) and the power module (460).

7. The calibration test system according to claim 6, characterized in that: The electric stapler (400) further comprises a switch quantity acquisition module (480), and the switch quantity acquisition module (480) is connected to the microprocessor (410).

Images