Rescue carriage intelligent management system and method based on NIS system

Abstract

The invention relates to the field of medical management systems, in particular to an intelligent rescue carriage management system and method based on an NIS (Network Information System), comprising a unique two-dimensional code or an RFID (Radio Frequency Identification) tag arranged on each rescue carriage, the tag is bound with a department exclusive drug list and management authority, and tag information is dynamically updated through the NIS to adapt to different department requirements; the low-power-consumption PDA terminal is internally provided with a near field communication module and an offline caching function, supports one-key scanning of a rescue carriage label to load a medicine list and uploads checking data to the cloud end in real time, and the PDA terminal can still execute local checking when the network is interrupted and automatically synchronize the data after the network is recovered; the low-power-consumption PDA terminal is integrated with the high-precision code scanning module, a nurse can quickly complete scanning of medicines in a whole vehicle, the system compares list data in real time and triggers sound-light alarm, the counting time is effectively shortened, the error rate is reduced, offline operation is supported, and it is ensured that data are not lost under the emergency condition.

Description

Technical Field

[0001] The present invention relates to the field of medical management systems, and in particular to an intelligent management system and method for emergency vehicles based on an NIS system. Background Art

[0002] As core equipment in hospital emergency scenarios, the integrity and effectiveness of the medicines and supplies inside the ambulance are directly related to the success rate of patient rescue. Traditional ambulance management relies heavily on manual operations. Nurses must regularly manually count the number of medicines, verify expiration dates, and record the status of the vehicle. This process is cumbersome and inefficient. With the popularization of nursing information systems (NIS), some hospitals are trying to convert paper records to electronic ones.

[0003] However, problems still exist, such as data siloing and insufficient dynamic adjustment capabilities. For example, drug lists cannot be updated in real time according to departmental needs, expiration date management relies on manual verification, and vehicle lockdown records lack a reliable traceability mechanism. Against this backdrop, an intelligent management system deeply integrated with NIS is urgently needed. Through collaborative innovation in hardware and software, this system can achieve automated, precise, and closed-loop management of emergency vehicles, thereby improving medical safety and management efficiency. Summary of the Invention

[0004] In order to overcome the above-mentioned technical problems, the purpose of the present invention is to provide an intelligent management system and method for emergency vehicles based on the NIS system: through the collaborative innovation of hardware and software, the automation, precision and closed-loop management of emergency vehicles are realized, thereby improving medical safety and management efficiency, and solving the problems that the drug list of the management system cannot be updated in real time according to the needs of the department, the expiration date management relies on manual investigation, and the vehicle sealing record lacks a reliable traceability mechanism.

[0005] The purpose of the present invention can be achieved through the following technical solutions: The intelligent management system for emergency vehicles based on the NIS system includes: The intelligent hardware layer consists of the following components: A unique QR code or RFID tag is installed on each emergency vehicle. The tag is tied to the department's exclusive drug list and management permissions. The tag information is dynamically updated through the NIS system to adapt to the needs of different departments; Low-power PDA terminals with built-in near-field communication modules and offline caching capabilities support one-click scanning of emergency vehicle labels to load drug lists and upload inventory data to the cloud in real time. The PDA terminals can still perform local inventory during network outages and automatically synchronize data when the network is restored. Software control layer, including: The NIS core system is connected to the hospital's HIS system to obtain real-time changes in departmental drug demand, dynamically adjust the emergency vehicle's drug configuration, and generate personalized drug lists; The expiration warning module automatically calculates the remaining expiration date based on the drug's entry time, expiration rules, and preset thresholds. When a drug enters the 7-30 day expiration warning range, an alert is issued through a pop-up window on the nurse workstation, push notifications on the mobile terminal, and a highlighted display on the PDA interface. The vehicle sealing management module provides two modes: "regular sealing" and "post-use sealing". The regular sealing mode triggers the sealing task according to a preset period, requiring the nurse to complete the inventory and confirm with an electronic signature. The post-use sealing mode is forcibly activated after the rescue vehicle is used. If the inventory or validity check is not completed, the vehicle sealing is prohibited. The sealing record contains the operator's employee number, timestamp and inventory results, and is encrypted and stored through blockchain to ensure that the data cannot be tampered with. Cloud data layer, including: Distributed cloud storage servers provide real-time backup of drug inventory, usage records, vehicle closure status, and inspection data. Redundant backup strategies are employed, automatically switching to a backup server in the event of a node failure. Multi-terminal collaborative interface supports simultaneous data access from PC, mobile and PDA terminals, achieving seamless data connection across departments and shifts; The data analysis engine uses the ARIMA time series model to analyze historical usage data, predict drug demand for the next 30 days, generate replenishment recommendations, and generate department management scores and drug turnover rate reports; The system achieves full-process automation and closed-loop control of emergency vehicle management through dynamic drug list generation, one-click scanning and inventory, expiration date warning linkage replenishment and electronic signature traceability mechanism.

[0006] As a further solution of the present invention: the specific implementation of the intelligent hardware layer includes: The unique QR code / RFID tag uses AES-256 encryption technology. The tag information includes the department number, drug list version number and permission key. When scanning the tag, the permission must be verified by the NIS system. If the permission does not match, the list will be prohibited from loading; The low-power PDA terminal is equipped with a high-precision barcode scanning camera and RFID reader / writer, which supports rapid identification of drug barcodes and label information. If a discrepancy between the quantity and the inventory is detected during the inventory process, the PDA terminal immediately triggers an audible and visual alarm and displays the specific discrepancies on the interface. The PDA terminal has a built-in battery management module that automatically shuts down non-core functions in low-power mode to extend battery life and ensure continuous operation for more than 8 hours; A two-way authentication protocol is used between the PDA terminal and the rescue vehicle tag to prevent illegal devices from tampering with or forging tag data.

[0007] As a further solution of the present invention: the workflow of the expiration date warning module includes: When drugs are put into storage, the system automatically records the production date, expiration date and batch number, and calculates the theoretical expiration date. According to the frequency of use in the department and the characteristics of the drugs, the warning threshold range is customized. Specifically, consumable drugs are set to a 30-day advance warning, and high-risk drugs are set to a 7-day advance warning. After the warning is triggered, the system automatically generates a replenishment work order. The work order contains the drug name, current inventory, recommended replenishment quantity and priority identification, and is pushed to the pharmacy management system through the API interface. After the pharmacy processes the replenishment work order, the system updates the inventory data in real time and marks the newly entered drugs in the drug list of the PDA terminal to avoid confusion between new and old batches.

[0008] As a further solution of the present invention: the detailed operation mechanism of the vehicle sealing management module is: In the "Regular Car Seal" mode, the system generates a car seal task at a fixed time every day. The nurse needs to complete the following steps on the PDA: Scan the salvage vehicle tag to load the inventory; Scan the drug barcodes one by one and check the quantity; Confirm the inventory results with electronic signatures and provide explanations for any discrepancies; In the "Seal after Use" mode, after the rescue vehicle is opened, the system automatically records the opening time and operator, and requires the following operations after use: Re-inventory all medicines and supplies; Check the status of drugs approaching their expiration dates; Complete the electronic signature and upload the vehicle sealing record; All vehicle blocking records are signed with digital certificates and stored in blockchain or private chain distributed ledgers to ensure data integrity and judicial evidence effectiveness.

[0009] As a further solution of the present invention: the functions of the cloud data layer further include: The data analysis engine uses ARIMA (Autoregressive Integrated Moving Average) to predict drug demand for the next 30 days, and combines expiration warning information to optimize replenishment strategies and reduce expiration waste; Supports multi-dimensional data visualization, including departmental drug usage heat maps, expiration risk distribution maps, and vehicle sealing compliance rate statistics. Compliance rate = number of completed vehicle sealing tasks / total number of tasks × 100%; Provides a RESTful API interface to connect with the hospital's emergency plan system. When an emergency occurs, it automatically retrieves the real-time location and inventory information of the nearest rescue vehicle and pushes it to the emergency team's terminal.

[0010] As a further solution of the present invention: the method for generating and updating the personalized medicine list is: The NIS system dynamically generates a basic drug catalog based on department type (such as ICU, emergency department), seasonal disease prevalence factors (such as priority allocation of respiratory disease drugs in winter), and historical department usage data. Administrators can customize special drugs (such as those for rare diseases) through the NIS system interface and set priorities and minimum inventory levels. When department needs change, the system automatically compares the differences between the old and new lists. If high-risk drugs are added or removed, they must be reviewed by the head nurse for the second time (the review opinion is retained in the form of an electronic signature) before they can take effect. Each time the PDA terminal scans the label, it automatically downloads the latest list version and forcibly overwrites the local cache to ensure data consistency.

[0011] As a further solution of the present invention: the PDA terminal inventory operation process further includes: Nurses are required to undergo two-factor authentication when logging into the PDA terminal, including their work ID password and fingerprint recognition. During the inventory process, the system displays a real-time progress bar comparing the expected number of drugs with the actual number of scans, and provides a "quickly skip matched items" function (the system automatically marks matched drugs to avoid repeated scanning). If the same drug fails to be scanned three times in a row (such as a damaged label), the system automatically switches to manual input mode and records the cause of the abnormality for subsequent analysis. After the inventory is completed, the system generates an electronic inventory report containing the drug name, batch, quantity and expiration status.

[0012] As a further solution of the present invention: the intelligent replenishment logic further includes: The system calculates the economic replenishment quantity formula based on the drug unit price, remaining days of validity, and department usage frequency: ; To avoid over-purchasing; For drugs nearing their expiration date, the system prioritizes transferring them to high-consumption departments rather than directly replenishing them; When a pharmacy processes a replenishment work order, it needs to scan the barcode of the newly-entered medicine. The system automatically verifies the batch number and expiration date. If they do not match the work order, an alarm is triggered.

[0013] As a further solution of the present invention: the specific steps of the shift handover inspection process are: After the nurse on duty starts the inspection task on the PDA, the system prompts the nurse to check the following items in sequence: Consistency between the quantity of medicines and the list; status of medicines nearing their expiration date; functional integrity of the emergency vehicle equipment (including defibrillator battery voltage ≥10V and passing of the breathing circuit sealing test); if any item is not completed or there is an abnormality, the system will prohibit the vehicle from being sealed and send a text message reminder (including the name of the unfinished item and the 24-hour processing deadline) to the nurse taking over and the head nurse; the inspection record includes the inspection time, operator, description of the abnormal item and the processing measures, and is linked to the electronic shift handover log.

[0014] The intelligent management method of emergency vehicles based on the NIS system specifically includes the following steps: S1. Assign a unique QR code or RFID tag to each emergency vehicle. Bind the tag to the department's exclusive drug list and management permissions. Use the NIS system to monitor changes in departmental drug demand in real time and dynamically adjust the drug list associated with the tag to ensure that the emergency vehicle only loads drugs suitable for the current department. S2. The nurse uses a low-power PDA terminal to scan the emergency vehicle label and automatically load the drug list. The PDA terminal compares the actual quantity with the list data in real time by scanning the drug barcode or RFID tag. If there is a discrepancy, an audible and visual alarm is triggered and a discrepancy report is generated. S3. The system automatically calculates the remaining shelf life of the drug based on the drug's entry date. When the drug reaches the 7-30 day warning threshold, an alert is issued through a pop-up window, push notifications, and interface highlighting. Once the alert is triggered, a replenishment work order is automatically generated and pushed to the pharmacy management system. The work order includes the drug name, recommended replenishment quantity, and priority indicator. S4. In the "regular vehicle sealing" mode, the vehicle sealing task is generated according to the preset cycle. After the nurse completes the inventory, it is confirmed by electronic signature, and the system generates an encrypted electronic seal record. In the "sealing after use" mode, the vehicle sealing process is forced to start after the rescue vehicle is used. If the inventory or validity check is not completed, the vehicle sealing is prohibited, and the vehicle sealing record is synchronized to the blockchain storage; S5. Upload drug inventory, usage records, vehicle closure status, and inspection data to the cloud in real time. Analyze historical data through machine learning algorithms to predict drug demand and generate turnover rate reports. Linked with the hospital's HIS and EMR systems, it automatically retrieves the location and inventory information of emergency vehicles in an emergency to optimize resource allocation.

[0015] Beneficial effects of the present invention: By assigning a unique QR code / RFID tag to each ambulance and linking it with the NIS system in real time, a personalized drug list can be dynamically generated based on department needs, historical usage data, and seasonal disease trends. For example, respiratory disease drugs are automatically added in winter, and high-risk emergency drugs are prioritized in the ICU, solving the resource mismatch problem caused by traditional static lists.

[0016] Based on the expiration warning module and intelligent replenishment logic, the system automatically calculates the remaining expiration date of the drug and triggers a triple warning 7-30 days before the expiration date to intelligently generate replenishment quantities, avoiding over-purchasing and reducing the incidence of expired drugs.

[0017] By integrating a high-precision barcode scanning module into a low-power PDA terminal, nurses can quickly complete a full vehicle scan of medicines. The system compares the inventory data in real time and triggers an audible and visual alarm, effectively shortening inventory time and reducing error rates. It also supports offline operation to ensure that data is not lost in emergency situations.

[0018] Blockchain technology is used to store vehicle sealing records. Each record contains the operator's employee number, timestamp and electronic signature, and is combined with a private chain encryption mechanism to prevent tampering, making it easier to trace. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below with reference to the accompanying drawings.

[0020] Figure 1 This is a principle block diagram of the intelligent management system for emergency vehicles based on the NIS system in the present invention. DETAILED DESCRIPTION

[0021] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention. Example 1

[0022] See also Figure 1 As shown, this embodiment is an intelligent management system for emergency vehicles based on the NIS system. The intelligent hardware layer is composed of the following components: A unique QR code or RFID tag is installed on each emergency vehicle. The tag is tied to the department's exclusive drug list and management permissions. The tag information is dynamically updated through the NIS system to adapt to the needs of different departments; Low-power PDA terminals with built-in near-field communication modules and offline caching capabilities support one-click scanning of emergency vehicle labels to load drug lists and upload inventory data to the cloud in real time. The PDA terminals can still perform local inventory during network outages and automatically synchronize data when the network is restored. Software control layer, including: The NIS core system is connected to the hospital's HIS system to obtain real-time changes in departmental drug demand, dynamically adjust the emergency vehicle's drug configuration, and generate personalized drug lists; The expiration warning module automatically calculates the remaining expiration date based on the drug's entry time, expiration rules, and preset thresholds. When a drug enters the 7-30 day expiration warning range, an alert is issued through a pop-up window on the nurse workstation, push notifications on the mobile terminal, and a highlighted display on the PDA interface. The vehicle sealing management module provides two modes: "regular sealing" and "post-use sealing". The regular sealing mode triggers the sealing task according to a preset period, requiring the nurse to complete the inventory and confirm with an electronic signature. The post-use sealing mode is forcibly activated after the rescue vehicle is used. If the inventory or validity check is not completed, the vehicle sealing is prohibited. The sealing record contains the operator's employee number, timestamp and inventory results, and is encrypted and stored through blockchain to ensure that the data cannot be tampered with. Cloud data layer, including: Distributed cloud storage servers provide real-time backup of drug inventory, usage records, vehicle closure status, and inspection data. Redundant backup strategies are employed, automatically switching to a backup server in the event of a node failure. Multi-terminal collaborative interface supports simultaneous data access from PC, mobile and PDA terminals, achieving seamless data connection across departments and shifts; The data analysis engine uses the ARIMA time series model to analyze historical usage data, predict drug demand for the next 30 days, generate replenishment recommendations, and generate department management scores and drug turnover rate reports; The system achieves full-process automation and closed-loop control of emergency vehicle management through dynamic drug list generation, one-click scanning and inventory, expiration date warning linkage replenishment and electronic signature traceability mechanism.

[0023] The specific implementation methods of the intelligent hardware layer include: The unique QR code / RFID tag uses AES-256 encryption technology. The tag information includes the department number, drug list version number and permission key. When scanning the tag, the permission must be verified by the NIS system. If the permission does not match, the list will be prohibited from loading; The low-power PDA terminal is equipped with a high-precision barcode scanning camera and RFID reader / writer, which supports rapid identification of drug barcodes and label information. If a discrepancy between the quantity and the inventory is detected during the inventory process, the PDA terminal immediately triggers an audible and visual alarm and displays the specific discrepancies on the interface. The PDA terminal has a built-in battery management module that automatically shuts down non-core functions in low-power mode to extend battery life and ensure continuous operation for more than 8 hours; A two-way authentication protocol is used between the PDA terminal and the rescue vehicle tag to prevent illegal devices from tampering with or forging tag data.

[0024] The workflow of the expiration date warning module includes: When drugs are put into storage, the system automatically records the production date, expiration date and batch number, and calculates the theoretical expiration date. According to the frequency of use in the department and the characteristics of the drugs, the warning threshold range is customized. Specifically, consumable drugs are set to a 30-day advance warning, and high-risk drugs are set to a 7-day advance warning. After the warning is triggered, the system automatically generates a replenishment work order. The work order contains the drug name, current inventory, recommended replenishment quantity and priority identification, and is pushed to the pharmacy management system through the API interface. After the pharmacy processes the replenishment work order, the system updates the inventory data in real time and marks the newly entered drugs in the drug list of the PDA terminal to avoid confusion between new and old batches.

[0025] The detailed operation mechanism of the vehicle sealing management module is as follows: In the "Regular Car Seal" mode, the system generates a car seal task at a fixed time every day. The nurse needs to complete the following steps on the PDA: Scan the salvage vehicle tag to load the inventory; Scan the drug barcodes one by one and check the quantity; Confirm the inventory results with electronic signatures and provide explanations for any discrepancies; In the "Seal after Use" mode, after the rescue vehicle is opened, the system automatically records the opening time and operator, and requires the following operations after use: Re-inventory all medicines and supplies; Check the status of drugs approaching their expiration dates; Complete the electronic signature and upload the vehicle sealing record; All vehicle blocking records are signed with digital certificates and stored in blockchain or private chain distributed ledgers to ensure data integrity and judicial evidence effectiveness.

[0026] The cloud data layer further includes the following functions: The data analysis engine uses ARIMA (Autoregressive Integrated Moving Average) to predict drug demand for the next 30 days, and combines expiration warning information to optimize replenishment strategies and reduce expiration waste; Supports multi-dimensional data visualization, including departmental drug usage heat maps, expiration risk distribution maps, and vehicle sealing compliance rate statistics. Compliance rate = number of completed vehicle sealing tasks / total number of tasks × 100%; Provides a RESTful API interface to connect with the hospital's emergency plan system. When an emergency occurs, it automatically retrieves the real-time location and inventory information of the nearest rescue vehicle and pushes it to the emergency team's terminal.

[0027] The method for generating and updating the personalized drug list is as follows: The NIS system dynamically generates a basic drug catalog based on department type (such as ICU, emergency department), seasonal disease prevalence factors (such as priority allocation of respiratory disease drugs in winter), and historical department usage data. Administrators can customize special drugs (such as those for rare diseases) through the NIS system interface and set priorities and minimum inventory levels. When department needs change, the system automatically compares the differences between the old and new lists. If high-risk drugs are added or removed, they must be reviewed by the head nurse for the second time (the review opinion is retained in the form of an electronic signature) before they can take effect. Each time the PDA terminal scans the label, it automatically downloads the latest list version and forcibly overwrites the local cache to ensure data consistency.

[0028] The PDA terminal inventory operation process further includes: Nurses are required to undergo two-factor authentication when logging into the PDA terminal, including their work ID password and fingerprint recognition. During the inventory process, the system displays a real-time progress bar comparing the expected number of drugs with the actual number of scans, and provides a "quickly skip matched items" function (the system automatically marks matched drugs to avoid repeated scanning). If the same drug fails to be scanned three times in a row (such as a damaged label), the system automatically switches to manual input mode and records the cause of the abnormality for subsequent analysis. After the inventory is completed, the system generates an electronic inventory report containing the drug name, batch, quantity and expiration status.

[0029] Smart replenishment logic further includes: The system calculates the economic replenishment quantity formula based on the drug unit price, remaining days of validity, and department usage frequency: ; To avoid over-purchasing; For drugs nearing their expiration date, the system prioritizes transferring them to high-consumption departments rather than directly replenishing them; When a pharmacy processes a replenishment work order, it needs to scan the barcode of the newly received medicine. The system automatically verifies the batch number and expiration date. If they do not match the work order, an alarm is triggered.

[0030] The specific steps of the shift handover inspection process are as follows: After the nurse on duty starts the inspection task on the PDA, the system prompts the nurse to check the following items in sequence: Consistency between the quantity of medicines and the list; status of medicines nearing their expiration date; functional integrity of the emergency vehicle equipment (including defibrillator battery voltage ≥10V and passing of the breathing circuit sealing test); if any item is not completed or there is an abnormality, the system will prohibit the vehicle from being sealed and send a text message reminder (including the name of the unfinished item and the 24-hour processing deadline) to the nurse taking over and the head nurse; the inspection record includes the inspection time, operator, description of the abnormal item and the processing measures, and is linked to the electronic shift handover log. Example 2

[0031] An intelligent management method for emergency vehicles based on the NIS system, the method specifically comprises the following steps: S1. Assign a unique QR code or RFID tag to each emergency vehicle. Bind the tag to the department's exclusive drug list and management permissions. Use the NIS system to monitor changes in departmental drug demand in real time and dynamically adjust the drug list associated with the tag to ensure that the emergency vehicle only loads drugs suitable for the current department. S2. The nurse uses a low-power PDA terminal to scan the emergency vehicle label and automatically load the drug list. The PDA terminal compares the actual quantity with the list data in real time by scanning the drug barcode or RFID tag. If there is a discrepancy, an audible and visual alarm is triggered and a discrepancy report is generated. S3. The system automatically calculates the remaining shelf life of the drug based on the drug's entry date. When the drug reaches the 7-30 day warning threshold, an alert is issued through a pop-up window, push notifications, and interface highlighting. Once the alert is triggered, a replenishment work order is automatically generated and pushed to the pharmacy management system. The work order includes the drug name, recommended replenishment quantity, and priority indicator. S4. In the "regular vehicle sealing" mode, the vehicle sealing task is generated according to the preset cycle. After the nurse completes the inventory, it is confirmed by electronic signature, and the system generates an encrypted electronic seal record. In the "sealing after use" mode, the vehicle sealing process is forced to start after the rescue vehicle is used. If the inventory or validity check is not completed, the vehicle sealing is prohibited, and the vehicle sealing record is synchronized to the blockchain storage; S5. Upload drug inventory, usage records, vehicle closure status, and inspection data to the cloud in real time. Analyze historical data through machine learning algorithms to predict drug demand and generate turnover rate reports. Linked with the hospital's HIS and EMR systems, it automatically retrieves the location and inventory information of emergency vehicles in an emergency to optimize resource allocation.

[0032] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0033] The above contents are merely examples and explanations of the present invention. Those skilled in the art may make various modifications or additions to the described specific embodiments or replace them in similar ways. As long as they do not deviate from the invention or exceed the scope defined by the claims, they should all fall within the scope of protection of the present invention.

Claims

1. The intelligent management system for emergency vehicles based on the NIS system is characterized by: include: The intelligent hardware layer consists of the following components: A unique QR code or RFID tag is installed on each emergency vehicle. The tag is tied to the department's exclusive drug list and management permissions. The tag information is dynamically updated through the NIS system to adapt to the needs of different departments; Low-power PDA terminals with built-in near-field communication modules and offline caching capabilities support one-click scanning of emergency vehicle labels to load drug lists and upload inventory data to the cloud in real time. The PDA terminals can still perform local inventory during network outages and automatically synchronize data when the network is restored. Software control layer, including: The NIS core system is connected to the hospital's HIS system to obtain real-time changes in departmental drug demand, dynamically adjust the emergency vehicle's drug configuration, and generate personalized drug lists; The expiration warning module automatically calculates the remaining expiration date based on the drug's entry time, expiration rules, and preset thresholds. When a drug enters the 7-30 day expiration warning range, an alert is issued through a pop-up window on the nurse workstation, push notifications on the mobile terminal, and a highlighted display on the PDA interface. The vehicle sealing management module provides two modes: "regular sealing" and "post-use sealing". The regular sealing mode triggers the sealing task according to a preset period, requiring the nurse to complete the inventory and confirm with an electronic signature. The post-use sealing mode is mandatory after the rescue vehicle is used. If the inventory or expiration check is not completed, the vehicle will not be sealed. The sealing record contains the operator's employee number, timestamp and inventory results, and is encrypted and stored in the blockchain to ensure that the data cannot be tampered with. Cloud data layer, including: Distributed cloud storage servers provide real-time backup of drug inventory, usage records, vehicle closure status, and inspection data. Redundant backup strategies are employed, automatically switching to a backup server in the event of a node failure. Multi-terminal collaborative interface supports simultaneous data access from PC, mobile and PDA terminals, achieving seamless data connection across departments and shifts; The data analysis engine uses the ARIMA time series model to analyze historical usage data, predict drug demand for the next 30 days, generate replenishment recommendations, and generate department management scores and drug turnover rate reports; The system achieves full-process automation and closed-loop control of emergency vehicle management through dynamic drug list generation, one-click scanning and inventory, expiration date warning linkage replenishment and electronic signature traceability mechanism.

2. The intelligent management system for emergency vehicles based on the NIS system according to claim 1 is characterized in that: The specific implementation of the intelligent hardware layer includes: The unique QR code / RFID tag uses AES-256 encryption technology. The tag information includes the department number, drug list version number and permission key. When scanning the tag, the permission must be verified by the NIS system. If the permission does not match, the list will be prohibited from loading; The low-power PDA terminal is equipped with a high-precision barcode scanning camera and RFID reader / writer, which supports rapid identification of drug barcodes and label information. If a discrepancy between the quantity and the inventory is detected during the inventory process, the PDA terminal immediately triggers an audible and visual alarm and displays the specific discrepancies on the interface. The PDA terminal has a built-in battery management module that automatically shuts down non-core functions in low-power mode to extend battery life and ensure continuous operation for more than 8 hours; A two-way authentication protocol is used between the PDA terminal and the rescue vehicle tag to prevent illegal devices from tampering with or forging tag data.

3. The intelligent management system for emergency vehicles based on the NIS system according to claim 1 is characterized in that: The workflow of the expiration date warning module includes: When drugs are put into storage, the system automatically records the production date, expiration date and batch number, and calculates the theoretical expiration date. According to the frequency of use in the department and the characteristics of the drugs, the warning threshold range is customized. Specifically, consumable drugs are set to a 30-day advance warning, and high-risk drugs are set to a 7-day advance warning. After the warning is triggered, the system automatically generates a replenishment work order. The work order contains the drug name, current inventory, recommended replenishment quantity and priority identification, and is pushed to the pharmacy management system through the API interface. After the pharmacy processes the replenishment work order, the system updates the inventory data in real time and marks the newly entered drugs in the drug list of the PDA terminal to avoid confusion between new and old batches.

4. The intelligent management system for emergency vehicles based on the NIS system according to claim 1 is characterized in that: The detailed operation mechanism of the vehicle sealing management module is as follows: In the "Regular Car Seal" mode, the system generates a car seal task at a fixed time every day. The nurse needs to complete the following steps on the PDA: Scan the salvage vehicle tag to load the inventory; Scan the drug barcodes one by one and check the quantity; Confirm the inventory results with electronic signatures and provide explanations for any discrepancies; In the "Seal after Use" mode, after the rescue vehicle is opened, the system automatically records the opening time and operator, and requires the following operations after use: Re-inventory all medicines and supplies; Check the status of drugs approaching their expiration dates; Complete the electronic signature and upload the vehicle sealing record; All vehicle blocking records are signed with digital certificates and stored in blockchain or private chain distributed ledgers to ensure data integrity and judicial evidence effectiveness.

5. The intelligent management system for emergency vehicles based on the NIS system according to claim 1 is characterized in that: The functions of the cloud data layer further include: The data analysis engine uses ARIMA (Autoregressive Integrated Moving Average) to predict drug demand for the next 30 days, and combines expiration warning information to optimize replenishment strategies and reduce expiration waste; Supports multi-dimensional data visualization, including departmental drug usage heat maps, expiration risk distribution maps, and vehicle sealing compliance rate statistics. Compliance rate = number of completed vehicle sealing tasks / total number of tasks × 100%; Provides a RESTful API interface to connect with the hospital's emergency plan system. When an emergency occurs, it automatically retrieves the real-time location and inventory information of the nearest rescue vehicle and pushes it to the emergency team's terminal.

6. The intelligent management system for emergency vehicles based on the NIS system according to claim 1 is characterized in that: The method for generating and updating the personalized drug list is as follows: The NIS system dynamically generates a basic drug catalog based on department type, seasonal disease prevalence factors, and historical department usage data. Administrators can customize special drugs through the NIS system interface and set priorities and minimum inventory levels. When department needs change, the system automatically compares the differences between the old and new lists. If any high-risk drugs are added or removed, they must be reviewed by the head nurse for the second time before they can take effect. Each time the PDA terminal scans a label, it automatically downloads the latest version of the list and forcibly overwrites the local cache to ensure data consistency.

7. The intelligent management system for emergency vehicles based on the NIS system according to claim 2 is characterized in that: The PDA terminal inventory operation process further includes: Nurses are required to perform two-factor authentication when logging into the PDA terminal, including a work ID password and fingerprint recognition. During the inventory process, the system displays a real-time progress bar comparing the expected number of drugs with the actual scanned number, and provides a "quickly skip matched items" function. If the same drug fails to be scanned three times in a row, the system automatically switches to manual input mode and records the cause of the anomaly for subsequent analysis. After the inventory is completed, the system generates an electronic inventory report containing the drug name, batch, quantity and expiration status.

8. The intelligent management system for emergency vehicles based on the NIS system according to claim 3 is characterized in that: The intelligent replenishment logic further includes: The system calculates the economic replenishment quantity formula based on the drug unit price, remaining days of validity, and department usage frequency: ； To avoid over-purchasing; For drugs nearing their expiration date, the system prioritizes transferring them to high-consumption departments rather than directly replenishing them; When a pharmacy processes a replenishment work order, it needs to scan the barcode of the newly received medicine. The system automatically verifies the batch number and expiration date. If they do not match the work order, an alarm is triggered.

9. The intelligent management system for emergency vehicles based on the NIS system according to claim 1 is characterized in that: The specific steps of the shift handover inspection process are as follows: After the nurse on duty starts the inspection task on the PDA, the system prompts the nurse to check the following items in sequence: The quantity of medicines is consistent with the list; The status of near-expiry drugs; the functional integrity of the emergency vehicle equipment. If any item is not completed or there is an abnormality, the system will prohibit the vehicle from being sealed and send a text message reminder to the nurse on duty and the head nurse; the inspection record includes the inspection time, operator, description of the abnormal item and the handling measures, and is linked to the electronic shift handover log.

10. An intelligent management method for emergency vehicles based on the NIS system, characterized in that: The method specifically comprises the following steps: S1. Assign a unique QR code or RFID tag to each emergency vehicle. Bind the tag to the department's exclusive drug list and management permissions. Use the NIS system to monitor changes in departmental drug demand in real time and dynamically adjust the drug list associated with the tag to ensure that the emergency vehicle only loads drugs suitable for the current department. S2. The nurse uses a low-power PDA terminal to scan the emergency vehicle label and automatically load the drug list. The PDA terminal compares the actual quantity with the list data in real time by scanning the drug barcode or RFID tag. If there is a discrepancy, an audible and visual alarm is triggered and a discrepancy report is generated. S3. The system automatically calculates the remaining shelf life of the drug based on the drug's entry date. When the drug reaches the 7-30 day warning threshold, an alert is issued through a pop-up window, push notifications, and interface highlighting. Once the alert is triggered, a replenishment work order is automatically generated and pushed to the pharmacy management system. The work order includes the drug name, recommended replenishment quantity, and priority indicator. S4. In the "regular vehicle sealing" mode, a vehicle sealing task is generated according to the preset cycle. After the nurse completes the inventory and confirms it with an electronic signature, the system generates an encrypted electronic seal record. In the "sealing after use" mode, the vehicle sealing process is forced to start after the rescue vehicle is used. If the inventory or validity check is not completed, the vehicle sealing is prohibited, and the vehicle sealing record is synchronized to the blockchain for storage; S5. Upload drug inventory, usage records, vehicle closure status, and inspection data to the cloud in real time. Analyze historical data through machine learning algorithms to predict drug demand and generate turnover rate reports. Linked with the hospital's HIS and EMR systems, it automatically retrieves the location and inventory information of emergency vehicles in an emergency to optimize resource allocation.

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