Medical stretcher operation and maintenance system and data processing method thereof

Abstract

The invention relates to electric digital data processing, and discloses a medical stretcher operation and maintenance system and a data processing method thereof so as to find potential safety hazards in advance and start effective operation and maintenance management. The system comprises a first sensor and a second sensor which are in communication connection with a vehicle-mounted main control terminal of the ambulance; the two sensors are pressure sensors which are respectively arranged on two buckles for fixing the folded stretcher on the upper and lower sides of the ambulance, and the two pressure sensors are symmetrically distributed up and down based on the gravity center position of the folded stretcher, or the center position of the upper and lower pressure sensors and the gravity center position of the folded stretcher are within a preset distance range; the stretcher is a shovel type stretcher which can be separated left and right and folded front and back; the vehicle-mounted main control terminal is used for screening out the data collected by the two sensors respectively, splicing the data in a preset speed range and an acceleration range according to a time sequence and then transmitting the spliced data to the cloud control platform; the cloud control platform is used for calculating the difference value between the two sensors at each collection moment after screening so as to determine whether an alarm is generated or not.

Description

Technical Field

[0001] The present invention relates to electrical digital data processing in the field of intelligent manufacturing, and in particular to a medical stretcher operation and maintenance system and a data processing method thereof. Background Art

[0002] Scoop stretchers are medical devices widely used in ambulances, hospitals, and homes. They typically consist of two symmetrical stretcher sections, each movably connected at its front and rear ends. These sections can be connected by a lock during use and folded back and forth when not in use. Their simple structure allows for quick and easy transfer of patients and docking with a medical bed. Due to their obvious advantages, they are becoming increasingly popular.

[0003] However, existing shovel stretchers are subject to wear and tear during use, and if used for too long, there is a risk of secondary injury to the patient. At the same time, in actual application scenarios, when the user provides evidence such as pictures or videos to request repair and warranty services, the time when the problem is discovered is significantly later than the time when the potential safety hazard is exposed, which requires further improvement. At the same time, most manufacturers lack reliable information collection methods for actual product performance data during operation and maintenance, which also restricts the effectiveness of their after-sales service strategies (such as the time to exchange old for new). Summary of the Invention

[0004] The present invention aims to disclose a medical stretcher operation and maintenance system and a data processing method thereof, so as to detect potential safety hazards in advance and initiate effective operation and maintenance management.

[0005] To achieve the above objectives, the medical stretcher operation and maintenance system disclosed in the present invention includes:

[0006] A first sensor and a second sensor establish a communication connection with the ambulance's onboard main control terminal; a communication connection is established between the onboard main control terminal and a cloud control platform; the first sensor and the second sensor are pressure sensors respectively deployed on the upper and lower buckles of the ambulance's fixed folding stretcher, and the two pressure sensors are symmetrically distributed up and down based on the center of gravity of the folded stretcher, or the center positions of the upper and lower pressure sensors are within a preset distance range from the center of gravity of the folded stretcher; the stretcher is a shovel-type stretcher that can be separated left and right and folded front and back, and in the storage state of the front and back folding, the two separable parts are in contact with the upper and lower pressure sensors respectively and are directly connected by the buckle;

[0007] The vehicle-mounted main control terminal is used to determine whether the stretcher is mounted in place based on the current pressure data of the first sensor and the second sensor and the calibrated pressure data range after power-on and before the ambulance is started. If so, after the ambulance's driving speed exceeds a first speed threshold, instruct the first sensor and the second sensor to synchronously collect a period of pressure data within a set time, and then filter the data collected by the two sensors to select the data within the preset speed and acceleration range, splice them in chronological order, and transmit them to the cloud control platform;

[0008] The cloud control platform is configured to, after time-aligning the collected data filtered by the first sensor and the second sensor, calculate the difference between the two sensors at each collection time, and then count whether the proportion of the number of times the difference exceeds the maximum X percentile in the historical records of the previous N times without alarms exceeds a set first ratio threshold. If so, generate and output a first alarm, where the first ratio threshold = (X+2Y) / 100; Y is the ratio of the difference between the maximum mean and the minimum mean in the historical records of the previous N times without alarms to the maximum mean, multiplied by 100, and the rounded value; wherein X is a natural number greater than or equal to 20 and less than or equal to 30.

[0009] Preferably, the vehicle-mounted main control terminal of the present invention is also used to: when the first sensor and the second sensor are powered on and woken up, determine whether there is a fault in the sensor itself based on the self-test status information obtained from the first sensor and the second sensor; if there is a fault, terminate subsequent data collection and output a fourth alarm; and the normal sensor switches back to sleep mode after completing data collection and transmission.

[0010] Preferably, the cloud control platform of the present invention is also used to: determine whether the proportion of sampling points whose statistical difference exceeds the maximum difference in the previous N alarm-free historical records exceeds a second proportion threshold; if so, generate and output a second alarm, and the second proportion threshold is a fixed value within the range of 10% to 15%.

[0011] Preferably, the cloud control platform of the present invention is further configured to count the number of consecutive alarms of the second alarm, and generate a third alarm when the number of consecutive alarms exceeds a set threshold.

[0012] Preferably, the values of the first ratio threshold, the second ratio threshold and X in the present invention are empirical values obtained based on fatigue life data of the scoop stretcher on a simulation vibration table.

[0013] Preferably, the first speed threshold value of the present invention is in the range of 60 km / h to 70 km / h; when screening the data collected by the two sensors, the preset acceleration range is ±0.25 m / s 2, the preset speed range is ±10 km / h of the first speed threshold.

[0014] To achieve the above-mentioned purpose, the present invention further discloses a data processing method for a medical stretcher operation and maintenance system, comprising:

[0015] The ambulance's onboard main control terminal establishes communication connections with a first sensor, a second sensor, and a cloud control platform respectively; the first sensor and the second sensor are pressure sensors respectively deployed on the upper and lower buckles of the ambulance's fixed folding stretcher, and the two pressure sensors are symmetrically distributed up and down based on the center of gravity of the folded stretcher, or the center positions of the upper and lower pressure sensors are within a preset distance range from the center of gravity of the folded stretcher; the stretcher is a shovel-type stretcher that can be separated left and right and folded front and back, and in the front and back folded storage state, the two separable parts are in contact with the upper and lower pressure sensors respectively and are directly connected by the buckle;

[0016] After power is turned on and before the ambulance is started, the vehicle-mounted main control terminal determines whether the stretcher is mounted in place based on the current pressure data of the first sensor and the second sensor and the calibrated pressure data range. If so, after the ambulance's speed exceeds a first speed threshold, the vehicle-mounted main control terminal instructs the first sensor and the second sensor to synchronously collect a period of pressure data within a set time, and then filters the data collected by the two sensors to select the data within the preset speed and acceleration range, splices them in chronological order, and transmits them to the cloud control platform;

[0017] After time-aligning the collected data filtered by the first sensor and the second sensor, the cloud control platform calculates the difference between the two sensors at each collection time, and then counts whether the proportion of the number of differences exceeding the maximum X percentile in the historical records of the previous N times without alarms exceeds a set first proportion threshold. If so, a first alarm is generated and output, where the first proportion threshold = (X+2Y) / 100; Y is the ratio of the difference between the maximum mean and the minimum mean in the historical records of the previous N times without alarms to the maximum mean, multiplied by 100, and the rounded value; where X is a natural number greater than or equal to 20 and less than or equal to 30.

[0018] Similarly, the method of the present invention further includes: the cloud control platform counting the number of sampling points whose difference exceeds the maximum difference in the previous N alarm-free historical records to determine whether it exceeds a second ratio threshold; if so, generating and outputting a second alarm, wherein the second ratio threshold is a fixed value within the range of 10% to 15%. Furthermore, the cloud control platform counts the number of consecutive alarms of the second alarm, and when the number of consecutive alarms exceeds a set number threshold, generating a third alarm.

[0019] The present invention has the following beneficial effects:

[0020] 1. During the use of the stretcher, under high safety conditions, it can be regarded as a rigid body as a whole, and the pressure difference data between the two pressure sensors tends to be consistent or relatively small. However, as the number of uses accumulates, the left and right parts directly connected by the lock will shake due to aging and deformation. In the folded storage environment of the ambulance, the symmetrical suspension between the upper and lower sensors in the early stage of use will evolve to an asymmetrical suspension in the later stage of use, and the corresponding safety hazards will also increase, thereby increasing the pressure difference data between the two pressure sensors. To this end, the present invention can analyze the collected data to detect safety hazards in advance and initiate effective operation and maintenance management, which is convenient to implement and highly reliable.

[0021] 2. During data collection, the onboard control terminal instructs the first and second sensors to simultaneously collect pressure data within a set timeframe only after the ambulance's speed exceeds a first speed threshold. The data collected by the two sensors is then filtered to identify data within the preset speed and acceleration ranges, which are then spliced together in chronological order and transmitted to the cloud control platform. This ensures that the percentage of valid data collected within the preset speed range is consistent with the first speed threshold. Furthermore, by filtering and splicing sensor data within the speed and acceleration ranges, subsequent comparisons with the previous N alarm-free historical records are consistent with the same operating conditions, improving the reliability of the comparison results.

[0022] 3. When determining whether to generate a first alarm, the criterion is whether the percentage of statistical differences exceeding the maximum X-quantile in the previous N alarm-free historical records exceeds a set first ratio threshold. This can address the issue of inconsistent lengths of spliced data after screening based on preset speed and acceleration ranges in different detection processes, thereby improving system compatibility. Furthermore, in determining the first ratio threshold, the present invention comprehensively considers the maximum and minimum mean values of the differences between the two sensors in normal historical records. This method has rigorous logic, reliability, and strong scalability, adapting to the expansion and dynamic updating of historical records. (The specific update strategy can be flexibly configured by the developer and is prior art and will not be described in detail here.)

[0023] The present invention will be described in further detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings, which constitute part of this application, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings:

[0025] Figure 1 This is a network architecture diagram of the medical stretcher operation and maintenance system disclosed in an embodiment of the present invention.

[0026] Figure 2The present invention is a flowchart of a data processing method for a medical stretcher operation and maintenance system disclosed in an embodiment of the present invention. DETAILED DESCRIPTION

[0027] The embodiments of the present invention are described in detail below with reference to the accompanying drawings. However, the present invention can be implemented in many different ways as defined and covered by the claims.

[0028] Example 1

[0029] This embodiment discloses a medical stretcher operation and maintenance system, such as Figure 1 As shown, it includes a first sensor 2 and a second sensor 3 that establish a communication connection with the ambulance vehicle-mounted main control terminal 1; and a communication connection is established between the vehicle-mounted main control terminal and the cloud control platform 4.

[0030] In this embodiment, the first sensor and the second sensor are pressure sensors respectively deployed on the upper and lower buckles for fixing the folded stretcher of the ambulance, and the two pressure sensors are symmetrically distributed up and down based on the center of gravity position of the stretcher after folding, or the center positions of the upper and lower pressure sensors and the center of gravity position of the stretcher after folding are within a preset distance range (based on the conventional size of existing shovel stretchers, the value range is preferably 0 to 5 cm).

[0031] In this embodiment, the stretcher is a scoop-type stretcher that can be separated left and right and folded front and back. In the folded storage state, the two separable parts are in contact with the upper and lower pressure sensors, respectively, and are directly connected by a lock. In other words, the detachable and foldable scoop-type stretcher refers to the standalone state when not deployed in an ambulance. Once deployed in an ambulance, its posture is rotated within the line of sight coordinate system, so that the two separable parts are arranged in an upper and lower position on the ambulance body, and the folding direction is consistent with the front and back direction of the ambulance body. This arrangement of this embodiment is essentially used to simulate the state of the stretcher during actual use; that is, when the stretcher is transporting a patient, the two separable parts of the scoop-type stretcher will experience yaw, pitch, and / or vibration.

[0032] Preferably, this embodiment further includes two flexible limiting mechanisms respectively disposed at the front and rear of the folded stretcher. The flexible limiting mechanisms may be coordinated with devices such as blocks, rubber materials and springs to allow the stretcher to appropriately shift its center of gravity forward and backward due to acceleration, sudden braking or aging deformation after being stored in the ambulance, while avoiding other adverse effects caused by excessive forward and backward displacement.

[0033] In this embodiment, the vehicle-mounted main control terminal is used to determine whether the stretcher is properly mounted based on the current pressure data from the first and second sensors and the calibrated pressure data range between power-up and the start of the ambulance. If so, after the ambulance's speed exceeds a first speed threshold, the vehicle-mounted main control terminal instructs the first and second sensors to synchronously collect pressure data within a set time period. The data collected by the two sensors are then filtered to select data within the preset speed and acceleration range, and the data is then spliced in chronological order and transmitted to the cloud control platform. When the ambulance is stationary, the stretcher is determined to be properly mounted if the pressure data from the first and second sensors are within the pre-calibrated pressure data range.

[0034] Typically, the value range of the above-mentioned first speed threshold is between 60 km / h and 70 km / h. When screening the collected data of the two sensors, the preset speed range is the first speed threshold ±10 km / h. The closer the preset acceleration is to a uniform speed, the better, and its fluctuation range is preferably ±0.25 m / s2.

[0035] In this embodiment, the cloud control platform is used to time-align the collected data after screening by the first sensor and the second sensor, calculate the difference between the two sensors at each collection time, and then count whether the proportion of the maximum X-quantile in the difference history records of the previous N (preferably in the range of 3 to 5) times without alarm exceeds a set first proportion threshold. If so, a first alarm is generated and output.

[0036] In this embodiment, the first ratio threshold = (X+2Y) / 100; where Y is the ratio of the difference between the maximum mean and the minimum mean in the previous N alarm-free historical records to the maximum mean, multiplied by 100, and the rounded value; X is a natural number greater than or equal to 20 and less than or equal to 30.

[0037] Furthermore, the maximum X-quantile in the historical records is calculated as follows: first, each group of historical records is sorted to determine the difference corresponding to the X-quantile; then, the maximum value among the differences corresponding to the X-quantiles of each group is taken as the maximum X-quantile in the historical records.

[0038] Preferably, in the process of storing and updating normal historical records, it is usually only necessary to record the maximum value (refer to the corresponding content below), the mean value and the X-quantile value of the difference between the two sensors; and the storage of the two original sequences sent by the vehicle-mounted main control terminal after the two sensors are spliced based on the time sequence for difference calculation is omitted, thereby saving storage resources.

[0039] Furthermore, the vehicle-mounted main control terminal of this embodiment is also configured to determine whether there is a fault in the sensor itself based on the self-test status information obtained from the first and second sensors when the first and second sensors are powered on and awakened. If a fault exists, subsequent data collection is terminated and a fourth alarm is output; and normal sensors switch back to a dormant state after completing data collection and transmission. Optionally, the trigger condition for terminating data collection may be: the current speed exceeds a preset second speed threshold (e.g., above 120 km / h or below 30 km / h), or a fixed collection time (e.g., 5 minutes) based on timer tracking has expired.

[0040] Preferably, the cloud control platform of this embodiment is also used to count whether the proportion of sampling points whose differences exceed the maximum difference in the previous N alarm-free historical records exceeds a second proportion threshold. If so, a second alarm is generated and output, and the second proportion threshold is a fixed value in the range of 10% to 15%.

[0041] Furthermore, the cloud control platform of this embodiment is also used to count the number of consecutive alarms of the second alarm. When the number of consecutive alarms exceeds a set threshold (a natural number greater than or equal to 2, usually 2), a third alarm is generated.

[0042] Undoubtedly, the first, second, and third alarms mentioned above all help to discover safety hazards in advance from different dimensions and initiate effective operation and maintenance management, thereby achieving a complementary effect and enabling operation and maintenance personnel to make a more reasonable and reliable decision on whether to replace the stretcher.

[0043] Preferably, the first ratio threshold, the second ratio threshold, and the value of X in the present invention are empirical values derived from fatigue life data of a shovel stretcher on a simulated vibration table (the vibration frequency and amplitude of which are close to the average frequency and amplitude values collected by the vibration sensor in the ambulance cabin under the operating conditions of the ambulance at the preset speed and acceleration range of the above-mentioned screening data). Furthermore, the data generating the alarm is classified as abnormal historical data (i.e., suspicious abnormal data). The cloud control platform is required to store and / or write the two original sensor sequences sent by the vehicle main control terminal, which are spliced based on time series for difference calculation, to the corresponding alarm log for further analysis by backend operations and maintenance personnel.

[0044] In this embodiment, the hardware parts of the vehicle-mounted main control terminal and the cloud control platform are usually existing ones in the ambulance operation and maintenance system. Reference can be made to domestically disclosed invention patents such as CN118764713B. Software updates to the two hardware can be used to implement this embodiment. Moreover, in the process of modifying existing ambulances, only the first and second sensors need to be installed and deployed, which makes networking convenient and further expands the scope of application.

[0045] Example 2

[0046] Corresponding to the above embodiment, this embodiment discloses a data processing method for a medical stretcher operation and maintenance system, such as Figure 2 As shown, including:

[0047] Step S1, the ambulance's onboard main control terminal establishes communication connections with the first sensor, the second sensor and the cloud control platform respectively; the first sensor and the second sensor are pressure sensors respectively deployed on the upper and lower fixed folding stretcher buckles of the ambulance, and the two pressure sensors are symmetrically distributed up and down based on the center of gravity position of the stretcher after folding, or the center positions of the upper and lower pressure sensors are within a preset distance range from the center of gravity position of the stretcher after folding; the stretcher is a shovel-type stretcher that can be separated left and right and folded front and back, and in the storage state of folding front and back, the two parts that can be separated left and right are respectively in contact with the upper and lower pressure sensors and are directly connected with the lock buckle.

[0048] Step S2: After the vehicle-mounted main control terminal is powered on and before the ambulance is started, the vehicle-mounted main control terminal determines whether the stretcher is mounted in place based on the current pressure data of the first sensor and the second sensor and the calibrated pressure data range. If so, after the ambulance's driving speed exceeds the first speed threshold, the first sensor and the second sensor are instructed to synchronously collect a period of pressure data within a set time, and then the data collected by the two sensors are filtered out to obtain the data within the preset speed and acceleration range, and the data are spliced in chronological order and transmitted to the cloud control platform.

[0049] Step S3: After time-aligning the filtered collected data from the first sensor and the second sensor, the cloud control platform calculates the difference between the two sensors at each collection time, and then counts whether the proportion of the number of differences exceeding the maximum X percentile in the previous N alarm-free historical records exceeds a set first ratio threshold. If so, a first alarm is generated and output: first ratio threshold = (X + 2Y) / 100; Y is the ratio of the difference between the maximum mean and the minimum mean in the previous N alarm-free historical records to the maximum mean, multiplied by 100, rounded; where X is a natural number greater than or equal to 20 and less than or equal to 30.

[0050] Similarly, the method of the present invention further includes: the cloud control platform counting the number of sampling points whose difference exceeds the maximum difference in the previous N alarm-free historical records to determine whether it exceeds a second ratio threshold; if so, generating and outputting a second alarm, wherein the second ratio threshold is a fixed value within the range of 10% to 15%. Furthermore, the cloud control platform counts the number of consecutive alarms of the second alarm, and when the number of consecutive alarms exceeds a set number threshold, generating a third alarm.

[0051] In summary, the medical stretcher operation and maintenance system and data processing method disclosed in the embodiments of the present invention have at least the following beneficial effects:

[0052] 1. During the use of the stretcher, under high safety conditions, it can be regarded as a rigid body as a whole, and the pressure difference data between the two pressure sensors tends to be consistent or relatively small. However, as the number of uses accumulates, the left and right parts directly connected by the lock will shake due to aging and deformation. In the folded storage environment of the ambulance, the symmetrical suspension between the upper and lower sensors in the early stage of use will evolve to an asymmetrical suspension in the later stage of use, and the corresponding safety hazards will also increase, thereby increasing the pressure difference data between the two pressure sensors. To this end, the present invention can analyze the collected data to detect safety hazards in advance and initiate effective operation and maintenance management, which is convenient to implement and highly reliable.

[0053] 2. During data collection, the onboard control terminal instructs the first and second sensors to simultaneously collect pressure data within a set timeframe only after the ambulance's speed exceeds a first speed threshold. The data collected by the two sensors is then filtered to identify data within the preset speed and acceleration ranges, which are then spliced together in chronological order and transmitted to the cloud control platform. This ensures that the percentage of valid data collected within the preset speed range is consistent with the first speed threshold. Furthermore, by filtering and splicing sensor data within the speed and acceleration ranges, subsequent comparisons with the previous N alarm-free historical records are consistent with the same operating conditions, improving the reliability of the comparison results.

[0054] 3. When determining whether to generate a first alarm, the criterion is whether the percentage of statistical differences exceeding the maximum X-quantile in the previous N alarm-free historical records exceeds a set first ratio threshold. This can address the issue of inconsistent lengths of spliced data after screening based on preset speed and acceleration ranges in different detection processes, thereby improving system compatibility. Furthermore, in determining the first ratio threshold, the present invention comprehensively considers the maximum and minimum mean values of the differences between the two sensors in normal historical records. This method has rigorous logic, reliability, and strong scalability, adapting to the expansion and dynamic updating of historical records. (The specific update strategy can be flexibly configured by the developer and is prior art and will not be described in detail here.)

[0055] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A medical stretcher operation and maintenance system, characterized in that: include: A first sensor and a second sensor that establish a communication connection with the ambulance's onboard main control terminal; A communication connection is established between the vehicle-mounted main control terminal and the cloud control platform; the first sensor and the second sensor are pressure sensors respectively deployed on the upper and lower buckles for fixing the folding stretcher of the ambulance, and the two pressure sensors are symmetrically distributed up and down based on the center of gravity position of the folded stretcher, or the center positions of the upper and lower pressure sensors are within a preset distance range from the center of gravity position of the folded stretcher; the stretcher is a shovel-type stretcher that can be separated left and right and folded front and back, and in the storage state of the front and back folding, the two separable parts are in contact with the upper and lower pressure sensors respectively and are directly connected by the buckle; The vehicle-mounted main control terminal is used to determine whether the stretcher is mounted in place based on the current pressure data of the first sensor and the second sensor and the calibrated pressure data range after power-on and before the ambulance is started. If so, after the ambulance's driving speed exceeds a first speed threshold, instruct the first sensor and the second sensor to synchronously collect a period of pressure data within a set time, and then filter the data collected by the two sensors to select the data within the preset speed and acceleration range, splice them in chronological order, and transmit them to the cloud control platform; The cloud control platform is configured to, after time-aligning the collected data filtered by the first sensor and the second sensor, calculate the difference between the two sensors at each collection time, and then count whether the proportion of the number of times the difference exceeds the maximum X percentile in the historical records of the previous N times without alarms exceeds a set first ratio threshold. If so, generate and output a first alarm, where the first ratio threshold = (X+2Y) / 100; Y is the ratio of the difference between the maximum mean and the minimum mean in the historical records of the previous N times without alarms to the maximum mean, multiplied by 100, and the rounded value; wherein X is a natural number greater than or equal to 20 and less than or equal to 30.

2. The medical stretcher operation and maintenance system according to claim 1, characterized in that: It also includes two flexible limiting mechanisms respectively arranged at the front and rear of the folded stretcher.

3. The medical stretcher operation and maintenance system according to claim 2, characterized in that: The vehicle-mounted main control terminal is also used for: When the first sensor and the second sensor are powered on and awakened, it is determined whether there is a fault in the sensor itself based on the self-test status information obtained from the first sensor and the second sensor. If a fault exists, subsequent data collection is terminated and a fourth alarm is output; and the normal sensor switches back to the sleep state after completing data collection and transmission.

4. The medical stretcher operation and maintenance system according to any one of claims 1 to 3, characterized in that: The cloud control platform is also used for: Whether the proportion of sampling points whose statistical difference exceeds the maximum difference in the historical records of the previous N times without alarms exceeds the second proportion threshold, if so, a second alarm is generated and output, and the second proportion threshold is a fixed value in the range of 10% to 15%.

5. The medical stretcher operation and maintenance system according to claim 4, characterized in that: The cloud control platform is also used to count the number of consecutive alarms of the second alarm, and generate a third alarm when the number of consecutive alarms exceeds a set threshold.

6. The medical stretcher operation and maintenance system according to claim 5, characterized in that: The values of the first ratio threshold, the second ratio threshold and X are empirical values obtained based on fatigue life data of the scoop stretcher on a simulation vibration table.

7. The medical stretcher operation and maintenance system according to claim 6, characterized in that: The value range of the first speed threshold is between 60 km / h and 70 km / h; when screening the collected data of the two sensors, the preset speed range is ±10 km / h of the first speed threshold, and the preset acceleration range is ±0.25 m / s 2 .

8. A data processing method for a medical stretcher operation and maintenance system, characterized in that: include: The ambulance's onboard main control terminal establishes communication connections with a first sensor, a second sensor, and a cloud control platform respectively; the first sensor and the second sensor are pressure sensors respectively deployed on the upper and lower buckles of the ambulance's fixed folding stretcher, and the two pressure sensors are symmetrically distributed up and down based on the center of gravity of the folded stretcher, or the center positions of the upper and lower pressure sensors are within a preset distance range from the center of gravity of the folded stretcher; the stretcher is a shovel-type stretcher that can be separated left and right and folded front and back, and in the front and back folded storage state, the two separable parts are in contact with the upper and lower pressure sensors respectively and are directly connected by the buckle; After power is turned on and before the ambulance is started, the vehicle-mounted main control terminal determines whether the stretcher is mounted in place based on the current pressure data of the first sensor and the second sensor and the calibrated pressure data range. If so, after the ambulance's speed exceeds a first speed threshold, the vehicle-mounted main control terminal instructs the first sensor and the second sensor to synchronously collect a period of pressure data within a set time, and then filters the data collected by the two sensors to select the data within the preset speed and acceleration range, splices them in chronological order, and transmits them to the cloud control platform; After time-aligning the collected data filtered by the first sensor and the second sensor, the cloud control platform calculates the difference between the two sensors at each collection time, and then counts whether the proportion of the number of differences exceeding the maximum X percentile in the historical records of the previous N times without alarms exceeds a set first proportion threshold. If so, a first alarm is generated and output, where the first proportion threshold = (X+2Y) / 100; Y is the ratio of the difference between the maximum mean and the minimum mean in the historical records of the previous N times without alarms to the maximum mean, multiplied by 100, and the rounded value; where X is a natural number greater than or equal to 20 and less than or equal to 30.

9. The data processing method of the medical stretcher operation and maintenance system according to claim 8, characterized in that: Also includes: The cloud control platform statistically determines whether the proportion of sampling points whose difference exceeds the maximum difference in the historical records of the previous N times without alarms exceeds a second proportion threshold. If so, a second alarm is generated and output. The second proportion threshold is a fixed value in the range of 10% to 15%.

10. The data processing method of the medical stretcher operation and maintenance system according to claim 9, characterized in that: Also includes: The cloud control platform counts the number of consecutive alarms of the second alarm, and generates a third alarm when the number of consecutive alarms exceeds a set threshold.

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