Design of a Tomato Sorting Device Based on the Multisine-FSR Composite Measurement
, Guangming Chen 1 and Mahmoud A. Abdelhamid 3
Round 1
Reviewer 1 Report
In this study, the authors designed a tomato sorting terminal actuator based on pressure and bioelectrical impedance measurement. The electrical parameters of the tomato enabled to determine the tomato maturity, as well as to monitor the pressure. The experimental results suggested that stable grasping can be completed within 0.6s, and the accuracy of quality evaluation achieved 95%, which is very promising. However, the authors should revise the manuscript according to the following comments for further improve the quality of this manuscript.
1. In the Introduction section, the summary of the Electrical impedance detection method is not comprehensive enough, please supplement it.
2. In the Introduction section, it is suggested that the authors should highlight their main contributions by bullet points. It is important that these contributions should correspond to the research gap that the authors identified from current works.
3. In Section 2.1, the authors should mention how many tomato samples were used in this study.
4. In Section 2.4, various formulas were presented. Authors should cite relevant references for these formulas if they were not defined by the authors.
5. The font in Figure 7- Figure 11 is too small, and the horizontal legend in Figure 11 is not very clear. Please update the resolution of the above-mentioned figures.
6. In Figure 8, one can hardly know what is tomato 1, tomato 2, and so on. The authors should supplement some pictures for visual understanding.
7. in Section 3.4, how did the authors obtain the detection time and detection accuracy of machine vision? If you refer to other documents, please cite corresponding references. otherwise, also please briefly explain the general configuration of the experiments in this study.
Moderate editing of the English language is required.
Author Response
Please see the attachment.
Author Response File: 
Author Response.pdf
Reviewer 2 Report
Manuscript “Design of a tomato sorting device based on the Multisine-FSR composite measurement”
This manuscript will be interesting for scientists, who are interested in studying the tomato sorting devices. Also, these scientific results will have practical application in agriculture. In order to improve the manuscript, I suggest the following corrections:
1. Reference list does not include source 2.
2. It is recommended to use the International System of Units (SI): kgf (gf) or lbf.
3. The SI unit for pressure is the pascal (Pa), equal to one newton per square metre (N/m2). Therefore, it is necessary to make changes in the section 2.5.2. Pressure compensation analysis. The text is about force, not pressure. The same applies to Fig. 7, Fig. 9, and Tables 1-4, and the explanation in the article text.
4. The article states: “Many tomatoes were selected for measurement in each period to obtain the average complex impedance of tomatoes at different frequencies during that period, and then the curve was plotted… ”. It is necessary to note how many tomatoes were examined in each period.
5. The article states: “The testing conditions are to conduct time-sharing measurements at the same location of the tomato sample at room temperature…”. What is room temperature?
6. In Fig. 11, the axis labels are not visible.
7. It is necessary to explain how Total recognition accuracy was calculated in Tables 5 and 6. Perhaps, in Table 5: (24/25)·100 = 96%. It may also be necessary to clarify the values in Table 6.
8. Where are the results of determining the skin color of tomatoes using a calorimeter?
Comments for author File: 
Comments.doc
Author Response
Response to Reviewer 2 Comments
Point 1: Reference list does not include source 2.
Response 1: Dear reviewer, thank you for taking the time to process the submission of our manuscript. However, our reference format is sorted by the author's first letter, and the editor has informed us that modifications are needed. Therefore, we will modify the citation format of all references to make it clearer and more convenient for you to read.
Point 2: It is recommended to use the International System of Units (SI): kgf (gf) or lbf.
Response 2: . We have unified the units in the paper into the International unit.
Point 3: The SI unit for pressure is the pascal (Pa), equal to one newton per square metre (N/m2). Therefore, it is necessary to make changes in the section 2.5.2. Pressure compensation analysis. The text is about force, not pressure. The same applies to Fig. 7, Fig. 9, and Tables 1-4, and the explanation in the article text.
Response 3: All inappropriate pressures have been modified to force.
Point 4: The article states: “Many tomatoes were selected for measurement in each period to obtain the average complex impedance of tomatoes at different frequencies during that period, and then the curve was plotted… ”. It is necessary to note how many tomatoes were examined in each period.
Response 4: 320 tomato samples were used in this study.
In Section 2.1, the original text is:
“In this study, the botanical tomato variety was used at four ripening stages (green, white ripening period, color transformation period, and pink ripening period) based on the Huang Yuping.”
Modify to:
“In this study, the botanical tomato variety was used at four ripening stages (green, white ripening period, color transformation period, and pink ripening period) based on the Huang Yuping. In This study a total of 320 tomato samples were used , of which 80 samples were evenly divided for each period in the training stage, and 100 tomato samples were used in the test stage.
Point 5: The article states: “The testing conditions are to conduct time-sharing measurements at the same location of the tomato sample at room temperature…”. What is room temperature?
Response 5: The temperature on the day of the experiment was added in the text, with a room temperature of 20 degrees Celsius.
Point 6: In Fig. 11, the axis labels are not visible.
Response 6: The horizontal legend of Figure 11 has also been further explained as follows.
Figure 11. Changes in short-term impedance of tomatoes with frequency and time. (The horizontal legend is Harmonic component frequency.)
Point 7: It is necessary to explain how Total recognition accuracy was calculated in Tables 5 and 6. Perhaps, in Table 5: (24/25)·100 = 96%. It may also be necessary to clarify the values in Table 6.
Response 7: Introduce the table in more detail and explain the meaning of the data more clearly.
Point 8: Where are the results of determining the skin color of tomatoes using a calorimeter?
Response 8: Done in the manuscript.
