CN107135204B - Passive call answering system and method - Google Patents
Passive call answering system and method Download PDFInfo
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- CN107135204B CN107135204B CN201710237354.1A CN201710237354A CN107135204B CN 107135204 B CN107135204 B CN 107135204B CN 201710237354 A CN201710237354 A CN 201710237354A CN 107135204 B CN107135204 B CN 107135204B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/16—Communication-related supplementary services, e.g. call-transfer or call-hold
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/10—Architectures or entities
- H04L65/102—Gateways
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/18—Self-organising networks, e.g. ad-hoc networks or sensor networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/18—Self-organising networks, e.g. ad-hoc networks or sensor networks
- H04W84/22—Self-organising networks, e.g. ad-hoc networks or sensor networks with access to wired networks
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The invention provides a passive call answering system, which comprises a data management area and a wireless sensing coverage network area, wherein the data management area comprises a computing platform and a gateway, the wireless sensing coverage network area comprises a sink node and a calling terminal, the sink node and the calling terminal are communicated through a first wireless network, and the sink node is communicated with the gateway of the data management area through a second wireless network. The passive call response system provided by the invention does not need a power supply, so that the service life is prolonged, the use cost is reduced, the initialization is simplified, the initialization efficiency is improved, no wiring is needed, and the application scene of the passive call response system is expanded.
Description
Technical Field
The invention relates to the field of communication, in particular to the application field of call answering.
Background
In hospital administration, a patient needs to call medical personnel to view the condition for him. The manual care mode used in the initial hospital management, but with the continuous optimization of hospital management, a medical ward call management system appears, the system greatly improves the working efficiency of medical staff, and under the condition of the same ward scale, all the work can be completed by only a few medical staff.
Traditional medical ward calling system is through wired mode, is connected to medical personnel's department of standing a watch with the call terminal of each sick bed, nurse station promptly, and when patient pressed call terminal, medical personnel in nurse station just can see calling information, just can be timely go to look over patient's the condition. Although the traditional ward calling system greatly optimizes the management of the hospital on the patient and can meet the reliable and timely requirements, the traditional ward calling system still has the problems of complex wiring, high cost, high possibility of failure and difficult maintenance.
With the development of technology, calling systems using wireless technology have appeared in recent years. Most of these wireless call systems use Zigbee wireless transmission networks as a data transmission method of their own system. Of course, some solutions select to use 2.4G wireless transmission technology. However, in all kinds of wireless calling systems, the calling terminal needs either a power supply or a battery power supply. The use of power means that the placement of the calling terminal must be in the place where the power is available, which greatly limits the placement of the calling terminal, especially where the calling terminal needs to be set temporarily; while the use of battery-powered call terminals, while providing a significant improvement in terminal placement limitations, the use of battery-powered call terminals has a common problem: the batteries need to be replaced. Each year, considerable capital is invested in replacing the battery of the call system, which increases the cost of use and also increases the difficulty in maintaining the system, since the maintenance personnel need to find a specific call terminal to be maintained when repairing the call terminal.
Therefore, in order to solve a series of problems caused by complicated wiring and high cost of a wired calling system and a power supply in a wireless calling system, the invention provides a novel medical passive call answering system based on a wireless technology and a micro-energy technology and a using method thereof.
Disclosure of Invention
The present invention aims to address at least the above-mentioned deficiencies and provides a passive call answering system and method. The passive call answering system comprises:
the system comprises a data management area and a wireless sensing coverage network area;
the data management area further includes: the system comprises a computing platform and a gateway, wherein the gateway is used for connecting a data management area and a wireless sensing coverage network area;
the wireless sensing coverage network area further comprises: a sink node and a call terminal; the convergent node and the calling terminal communicate through a first wireless network; the sink node communicates with a gateway of a data management area through a second wireless network;
when the calling terminal sends calling information, the convergent node receives the calling information through a first wireless network and sends the calling information to a gateway in the data management area through a second wireless network, the gateway receives the calling information and then sends the calling information to the computing platform through a communication network, and the computing platform receives the calling information and then displays the calling information through a human-computer interface.
According to an embodiment of the invention, the calling terminal comprises a micro control unit module, a wireless communication transmission module, a micro energy collection module and an external power interface.
According to an embodiment of the invention, when the call terminal is in operation, the micro-control unit module and the wireless transmission module are powered by the micro-energy collection module by using the electric power generated by the mechanical energy.
According to an embodiment of the invention, when the calling terminal is initialized, the external power supply interface on the calling terminal is connected through the external power supply to supply power for the micro control unit module and the wireless transmission module.
According to an embodiment of the present invention, the wireless network in which the sink node and the call terminal communicate with each other is a 2.4G wireless network, and the wireless network in which the sink node and the gateway in the data management area communicate with each other is a 433M wireless network.
According to an embodiment of the present invention, the micro energy collecting module further includes: mechanical switching device, permanent magnet, coil and power processing circuit.
According to an embodiment of the invention, when the calling terminal is pressed, the mechanical switch device of the micro-energy collection module drives the bound permanent magnet, the magnetic flux of the permanent magnet changes, so that the coil wound on the permanent magnet generates instantaneous current, and the generated current is processed by the power supply processing circuit and then supplies power to the calling terminal.
According to an embodiment of the present invention, the sink node further includes: the device comprises a power supply, a first wireless transmission module, a micro control unit module, a second wireless transmission module and a display module.
The invention also provides a passive call answering method, which comprises the following steps: initializing a flow and a normal working flow;
the initialization process further includes:
when the calling terminal needs to carry out terminal initialization work, the calling terminal is powered by an external power supply module, wherein the power supply time is longer than a threshold value T;
loading a channel number and a delay variable T stored in a chip FLASH after a calling terminal is powered on, sending calling information KEY through a channel indicated by the channel number, and adding the calling information KEY with the delay variable T, and entering a terminal initialization process when the delay variable T is greater than a T threshold value;
prompting to enter a call terminal initialization process through an LED lamp, and sending channel matching information by the terminal and waiting for the sink node to reply ACK data after sending;
judging whether the length Len of the received ACK data is greater than 0, if so, indicating that the converged ACK data is received, otherwise, switching the channel to send the channel matching information again, and keeping the polling channel to send the matching information until the ACK data meeting the conditions is received;
the normal workflow further comprises:
when the calling terminal works normally, the calling terminal supplies power to other parts of the terminal through the micro-energy module, the terminal assigns values to the delay variable t after being electrified, loads a channel number stored in a chip FLASH, performs self-addition on the delay variable t and sends calling information KEY;
and after the information KEY is sent, calculating whether the delay variable T is greater than a threshold value T, and repeating the steps of self-adding T and sending the call information KEY when the T is less than the threshold value T, wherein the threshold value T is a time value greater than the power supply time of the micro-energy module.
According to an embodiment of the present invention, the determining condition for switching the channel further includes determining a networking response acknowledgement command ACK _ CH _ ON and a signal strength, and when the networking response acknowledgement command ACK _ CH _ ON is not received or the signal strength is less than a threshold strength, switching the channel and sending the channel matching information again;
when the received data length Len is greater than 0, a networking response order ACK _ CH _ ON is received, and the signal intensity is greater than the threshold intensity, the current channel number is stored in a chip FLASH to serve as a data communication channel number, the terminal initialization process is finished, the terminal initialization process is prompted to be finished through an LED lamp, and the calling terminal enters a normal working flow.
The passive call response system has the following effects that 1, the service life is prolonged and the use cost is reduced because a power supply is not needed, 2, the call terminal of the passive call response system can be automatically initialized to be simplified, the initialization efficiency is improved, 3, the passive call response system uses data wireless transmission, does not need wiring, expands the application scene of the passive call response system, 4, rich networking modes, a networking mode with high reliability can be selected according to the actual situation, a networking mode with low cost can be selected, and meanwhile, two-way communication is realized.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
FIG. 1 is a schematic diagram of a passive call answering system of the present invention;
FIG. 2 is a schematic diagram of a calling terminal of the present invention;
FIG. 3 is a block diagram of a micro-energy harvesting module of the present invention;
FIG. 4 is a schematic diagram of a sink node of the present invention;
FIG. 5 is a flowchart of the passive call answering method of the present invention;
FIG. 6 is a flow chart of the sink node operation of the present invention.
Detailed Description
The invention relates to a passive call answering system, which mainly comprises the following components:
a) micro-energy power supply: the calling terminal converts kinetic energy generated when a user presses the calling terminal into electric energy through a micro-energy collecting module of the calling terminal, so that a control module, a communication module and the like are powered by a substitute power supply, and a series of problems caused by power supply or battery power supply are solved;
b) wireless sensor network channel matching: when the calling terminal needs to be subjected to channel initialization, external power supply is carried out on the calling terminal, the calling terminal automatically enters a wireless sensor network channel matching process after power supply is carried out for a period of time, channel automatic matching is completed after a period of time, and the calling terminal sends calling information through a matched channel in the subsequent data transmission;
c) automatic channel selection: when the calling terminal carries out channel initialization, the calling terminal can poll all channels, when receiving a message returned by the sink node, the calling terminal stores the current matched communication channel into a chip FLASH as a later data communication channel by judging whether the returned message is channel matching information of the sink node, information fed back to the calling terminal or not and whether the signal intensity of the feedback information is greater than a threshold value or not;
d) and (3) low-power consumption processing: the low-power consumption chip is adopted by the whole calling terminal, so that the energy generated by the micro-energy collecting module can meet the requirement of sending the calling information for many times, the calling information can be completely sent to the sink node, and the reliability of data transmission is improved;
e) and (3) displaying the data of the sink nodes: when the convergent node receives the calling terminal information, whether the channel matching request or the calling information is displayed on an LED screen on the convergent node;
f) managing matched software: aiming at the novel medical passive call answering system, a software is matched to carry out management software integrating bed, calling and monitoring, and the software can be used for monitoring calling information at any place, so that the expansibility and the mobility of the system are improved.
Fig. 1 is a schematic diagram of a passive call answering system of the present invention. The passive call answering system of the present invention can be applied to a plurality of scenes, and is not limited to medical scenes. The present embodiment will be described in conjunction with a medical environment for the purpose of better describing the present system.
As shown in fig. 1, the passive call answering system of the present invention is composed of a data management area and a wireless sensor network coverage area. The two are organically combined into a whole through the internet gateway in the data management area. The data management area is composed of a computer arranged at a nurse station and a network switch machine which are connected through an internet network. The wireless sensor network area mainly comprises a sink node arranged between a ward gate and a corridor and a calling terminal arranged beside each sickbed in the ward, the sink node and the calling terminal form an organic whole through a wireless network, the wireless networking mode can be any existing wireless combination mode, and 2.4G and 433M wireless networks are selected for description. Each aggregation is connected with a gateway of the data management area through a 433M wireless network. Finally, the calling terminal, the sink node and the gateway form a wireless sensing network with a tree structure.
When the whole system works, when a user presses down the call terminal switch, the kinetic energy of the press switch is converted into electric energy to drive other modules in the switch to work, so that call information is sent; the call information is converged to a sink node through 2.4G, the sink node processes the collected information and converts the collected information into 433M communication data, and then the data is uploaded to a gateway through 433M; the gateway converts information uploaded in the wireless sensor network area into data capable of being transmitted in the internet, the final data is transmitted to a computer connected with the gateway through the internet, and after the computer receives the calling information, the computer finally informs medical staff beside the computer through various human-computer interaction modes such as popup window and voice broadcast.
Fig. 2 is a schematic diagram of a call terminal in the medical passive call answering system according to the present invention. As shown in fig. 2, the calling terminal includes an MCU module, a 2.4G wireless communication transmission module, a micro-energy collection module, an LED lamp, and an external power interface. When the whole system works normally, the micro-energy collection module supplies power to the MCU module and the 2.4G wireless transmission module by using the electric power generated by the mechanical energy. When the calling terminal needs to be initialized, an external power supply interface on the calling terminal is connected through an external power supply to supply power for the MCU module and the 2.4G wireless transmission module. In the whole calling terminal, the MCU module not only appropriately processes data, but also serves as a central control chip to control the data transmission and reception of the 2.4G wireless transmission module, and controls the LED lamp to display different lamp states in different states.
Fig. 3 is a structural diagram of a micro energy collecting module of the present invention. As shown in fig. 3, the whole micro-energy collecting module consists of a mechanical switching device, a permanent magnet, a coil and a power supply processing circuit. The principle of power generation is based on electromagnetic induction, i.e., the phenomenon of induced electromotive force generated by magnetic flux changes. When a user needs to call, the switch is pressed, the mechanical switch device drives part of the permanent magnet bound with the switch to move together, so that the magnetic flux in the permanent magnet changes, a coil wound on the permanent magnet generates instantaneous current, and the generated current is processed by the power supply processing circuit to finally become electric energy which can be utilized by other modules of the calling terminal.
Fig. 4 is a schematic diagram of an aggregation node of the present invention. As shown in fig. 4, the sink node includes a power supply, a 2.4G wireless transmission module, an MCU module, a 433M wireless transmission module, and an LED display module. Wherein the power supply supplies all other modules. The MCU module controls the 2.4G wireless transmission module and the 433M wireless transmission module to realize the transmission of data among different transmission protocols. In addition, the MCU module also controls the LED display module to display the transmitted specific information.
Fig. 5 is a flowchart of the operation of the passive call answering method of the present invention. Fig. 5 includes the flow of two operation modes of the calling terminal: normal work flow and terminal initialization flow.
When the calling terminal works normally, the calling terminal supplies power to other parts of the terminal through the micro-energy module. And after the terminal is powered on, the delay variable t is assigned, the channel number stored in the chip FLASH is loaded, and then the delay variable t self-adding operation and the call information KEY are carried out. And after the information KEY is sent, judging whether the counting T is greater than a T threshold value, wherein the delay T threshold value is a time value absolutely greater than the power supply time of the micro-energy module. And when T is smaller than the T threshold value, repeating the process of T self-adding operation and sending the call information KEY.
When the calling terminal needs to carry out terminal initialization work, the calling terminal is powered by the external power supply module. The calling terminal can obtain longer power supply time relative to micro-power supply, and the time length is far greater than the T threshold value. And when the calling terminal is powered on, loading a channel number stored in the chip FLASH and assigning a delay variable t, and then sending the calling information KEY and the delay variable t self-adding through the channel number. And after the operation for a period of time, the delay variable T is greater than the T threshold value, and then the terminal initialization process is entered. And prompting to enter a call terminal initialization process in a mode of long flashing of an LED lamp. At this time, the terminal sends the channel matching information, waits for a period of time after sending the channel matching information to wait for receiving the ACK data replied by the sink node, and the waiting time is longer than the time length capable of normally receiving the data. After waiting for a period of time, judging whether the variable Len of the data length for receiving the ACK data is greater than 0, if the variable Len is less than or equal to 0, indicating that the ACK data is not received, switching the channel to send the channel matching information again, and polling the channel to send the matching information until the convergent ACK data is received. And when the data length variable Len of the received ACK data is greater than 0, analyzing the data, and checking whether the ACK is transmitted to the ACK, whether the ACK is a networking response command ACK _ CH _ ON or not and whether the signal strength is greater than a threshold value or not. And when one or more of the three conditions are not met, switching the channel, sending channel matching information again, and when the three conditions are met, saving the current channel number to the chip FLASH to serve as a subsequent data communication channel number, finishing the initialization of the terminal, prompting the end of the initialization process of the terminal by long flashing of the LED lamp, and then calling the terminal to enter a normal working flow.
FIG. 6 is a flow chart of the sink node operation of the present invention. As shown in fig. 6, after normal operation, the sink node enters a flow of waiting for data reception. When the 2.4G module receives data, the MCU analyzes the received data, when a control command in the data is KEY, the data is represented as call information, and the MCU converts the data and then sends the converted data to the gateway machine through the 433M module; and when the control command is ACK _ CH, the data is channel matching information of the calling terminal, and the MCU of the sink node sends reply ACK data containing ACK _ CH _ ON and ID through the 2.4G module. After the two situations are carried out, the sink node controls the LED screen to display specific information through the MCU, and then returns to a state of waiting for data reception. And when the parsed control command is not in the two cases, the state of waiting for data reception is returned without any processing.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
It is noted and understood that various modifications and improvements can be made to the invention described in detail above without departing from the spirit and scope of the invention as claimed in the preceding claims. Accordingly, the scope of the claimed subject matter is not limited by any of the specific exemplary teachings provided.
Claims (5)
1. A passive call answering system, comprising: the system comprises a data management area and a wireless sensing coverage network area;
the data management area further includes: the system comprises a computing platform and a gateway, wherein the gateway is used for connecting a data management area and a wireless sensing coverage network area;
the wireless sensing coverage network area further comprises: a sink node and a call terminal; the convergent node and the calling terminal communicate through a first wireless network; the sink node communicates with a gateway of a data management area through a second wireless network;
when the calling terminal sends calling information, the convergent node receives the calling information through a first wireless network and sends the calling information to a gateway in the data management area through a second wireless network, the gateway receives the calling information and then sends the calling information to the computing platform through a communication network, the computing platform displays the calling information through a human-computer interface after receiving the calling information,
the calling terminal comprises a micro control unit module, a wireless communication transmission module, a micro energy collection module and an external power interface; when the calling terminal works, the micro-energy collection module supplies power to the micro-control unit module and the wireless transmission module by utilizing electric power generated by mechanical energy, and when the calling terminal is initialized, an external power supply interface on the calling terminal is connected through an external power supply to supply power to the micro-control unit module and the wireless transmission module;
the passive call answering method comprises the following steps: initializing a flow and a normal working flow;
the initialization process further includes:
when the calling terminal needs to carry out terminal initialization work, the calling terminal is powered by an external power supply module through the external power supply interface, wherein the power supply time is longer than a threshold value T;
loading a channel number and a delay variable T stored in a chip FLASH after a calling terminal is powered on, sending calling information KEY through a channel indicated by the channel number, and adding the calling information KEY with the delay variable T, and entering a terminal initialization process when the delay variable T is greater than a T threshold value;
the method comprises the steps that an initialization process of a calling terminal is entered through an LED lamp, the terminal sends channel matching information and waits for receiving ACK (acknowledgement character) data replied by a sink node after sending, wherein the waiting time is longer than the time length capable of normally receiving the data;
judging whether a data length variable Len for receiving ACK data is greater than 0, if so, indicating that the converged ACK data is received, otherwise, switching a channel to send channel matching information again, and keeping a polling channel to send the matching information until the ACK data meeting the conditions is received;
the normal workflow further comprises:
when the calling terminal works normally, the calling terminal supplies power to other parts of the terminal through the micro-energy collecting module, the terminal assigns values to the delay variable t after being electrified, loads a channel number stored in a chip FLASH, performs self-addition on the delay variable t and sends calling information KEY;
after the information KEY is sent, calculating whether a delay variable T is larger than a threshold value T or not, and repeating the steps of T self-adding and sending the call information KEY when the T is smaller than the T threshold value, wherein the threshold value T is a time value larger than the micro-energy module can supply power;
the judgment condition of the channel switching further comprises that a networking response receipt command ACK _ CH _ ON and signal strength are judged, when the networking response receipt command ACK _ CH _ ON is not received or the signal strength is smaller than threshold strength, the channel is switched, and channel matching information is sent again;
when the data length variable Len of the received ACK data is greater than 0, the networking receipt command ACK _ CH _ ON is received, and the signal intensity is greater than the threshold intensity, the current channel number is stored in the chip FLASH to serve as a data communication channel number, the terminal initialization process is finished, the terminal initialization process is prompted to be finished through an LED lamp, and the calling terminal enters a normal working flow.
2. The passive call answering system according to claim 1, wherein the wireless network in which the sink node and the call terminal communicate is a 2.4G wireless network, and the wireless network in which the sink node communicates with the gateway of the data management area is a 433M wireless network.
3. The passive call answering system according to any one of claims 1 or 2, the micro-energy collection module further comprising: mechanical switching device, permanent magnet, coil and power processing circuit.
4. The passive call answering system according to claim 3, wherein when the call terminal is pressed, the mechanical switch device of the micro-energy collecting module drives the bound permanent magnet, the magnetic flux of the permanent magnet changes, so that the coil wound on the permanent magnet generates an instantaneous current, and the generated current is processed by the power processing circuit to supply power to the call terminal.
5. The passive call answering system of claim 1, the aggregation node further comprising: the device comprises a power supply, a first wireless transmission module, a micro control unit module, a second wireless transmission module and a display module.
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| CN108404253A (en) * | 2018-03-27 | 2018-08-17 | 成都信息工程大学 | A kind of sign monitoring, infusion supervision and passive calling system based on WSN |
| CN115410336A (en) * | 2021-05-27 | 2022-11-29 | 西门子(深圳)磁共振有限公司 | Alarm device and alarm system of magnetic resonance imaging system |
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