CN201656973U - Medical sick room calling system - Google Patents
Medical sick room calling system Download PDFInfo
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- CN201656973U CN201656973U CN2010203020131U CN201020302013U CN201656973U CN 201656973 U CN201656973 U CN 201656973U CN 2010203020131 U CN2010203020131 U CN 2010203020131U CN 201020302013 U CN201020302013 U CN 201020302013U CN 201656973 U CN201656973 U CN 201656973U
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- main frame
- extension set
- electronic display
- power supply
- calling system
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Abstract
The utility model relates to a medical sick room calling system, which comprises a host machine, a main phone, extension phones, an electronic display screen and a system power supply. The host machine and the main phone are mounted in a nurse office, the extension phones are mounted on bedsides of patients, the electronic display screen is mounted in a sick room corridor, the system power supply is used for supplying power, the host machine is connected with the main phone, the extension phones, the electronic display screen and the system power supply by means of power carrier technology, and the main phone is connected with the extension phones by using two-core power supplying cables in a non-polar manner. With the structure, the medical sick room calling system has the advantages of high system reliability, extremely convenient mounting and construction and lower cost.
Description
Technical field
The utility model relates to a kind of medical ward calling system.
Background technology
Medical calling system is to be used for the electronic information exchange system that the inpatient calls out doctor, nurse, has great practical value, and has been widely used in various hospitals.
Early stage medical calling system adopts centralized configuration mostly, and each ward links to each other with the nurse room by signal cable separately, and this type systematic has cost height, Installation and Debugging difficulty, the more high shortcoming of failure rate.Along with developing rapidly of computer, the communication technology, polytype calling system has appearred on the market.Because hospital internal does not allow to use radio paging system, therefore calling system in the market adopts single chip communication to realize mostly.
Present medical calling system exists following shortcoming or deficiency: what 1. connecting between main frame and the extension set adopted mostly is 6 core cables, i.e. 2 core power supplys, 2 core communications and 2 core voice, and cable is relatively wasted in such connection, and very inconvenience of construction; What 2. communication was adopted is the RS485 interface, and its speed is several KHZ, just in the wave spectrum scope of voice, therefore can cause interference to communication, influences speech quality; 3. extension set adopts the MCS51 series monolithic mostly, and power consumption is relatively large, and when communication line was longer, line drop was big, so system requires the supply lines footpath thick when adopting centrally connected power supply, and distance is near; 4. main frame and electronic display adopt the serial communication mode exchange message, and electronic display needs power supply separately, and hardware cost is higher relatively.
In sum, need a kind of new medical calling system of design, to solve shortcoming and the deficiency that present medical calling system exists.
The utility model content
The purpose of this utility model is to provide a kind of medical ward calling system, and simple in structure, cost is low, is convenient to installation, stronger antijamming capability and higher reliability.
Realize that the utility model purpose technical scheme is a kind of medical ward calling system, the main phone, extension set, electronic display and the system power supply that comprise main frame and be connected with main frame, main frame and main phone are installed in nurses' office, extension set is installed in patient's head of a bed, electronic display is installed in the corridor, ward, system power supply is used for power supply, adopt PLC technology to communicate between main frame and main phone, extension set, electronic display and the system power supply, main frame and extension set adopt the nonpolarity connection of two core service cables.
Described main frame comprises interface circuit and signal processing, and interface circuit is used for communicating by letter between main frame and main phone, extension set, electronic display and system power supply, and signal processing is used for the signal that individual part is sent is handled.
Described main frame and extension set adopt half-duplex data communication and full duplex voice communication, downlink voice adopts baseband transmission, ascending voice adopts the FM frequency modulation technology, centre frequency is 100KHZ, data-signal adopts the direct superposition of mode of self-defining data code element on the direct voltage of power supply, realizes semiduplex data communication.
Described main frame and extension set adopt the Star Network structure, and each branch road can connect a plurality of extension sets.
Described extension set adopts the PIC12C508 single-chip microcomputer of Microchip company as controller.
Adopt by the existing self-defining I of the I/O cause for gossip of single-chip microcomputer between described main frame and the electronic display
2The C bus realizes half worker communication
Described electronic display is used to show real-time call information, and when no call state, electronic display shows real-time time as digital clock.
Described system power supply becomes DC32V and two groups of direct currents of DC19V by one group of transformer rectifying and voltage-stabilizing after step-down, two groups of power grounds link to each other, wherein DC32V is the working power of phone and ward display screen, and DC19V becomes behind the DC12V working power as system by the three terminal regulator voltage stabilizing.
The utlity model has following beneficial effect: (1) the utility model adopts PLC technology to connect, and main frame and extension set adopt the nonpolarity connection of two core service cables, and this structure makes the system reliability height, and installation is very convenient, and cost is lower.
(2) main frame of the present utility model and extension set adopt half-duplex data communication and full duplex voice communication, and centre frequency is 100KHZ, and this structure can realize bi-directional call and the two-way intercommunication between main frame and the extension set, and conversation is disturbed lower.
(3) extension set of the present utility model adopts the PIC12C508 single-chip microcomputer of Microchip company as controller, this monolithic function effectively reduces the power consumption of the cost of extension set, the volume that reduces extension set and reduction extension set, when bus is in idle condition, the power consumption of each extension set is very little, operating current only has 0.5mA, therefore when hanging with more extension set on the bus, the static working current that flows through on the bus is less, and can guarantee also can operate as normal when system articulates a plurality of extension set.
Description of drawings
For the easier quilt of content of the present utility model is clearly understood, according to specific embodiment also in conjunction with the accompanying drawings, the utility model is described in further detail, wherein below
Fig. 1 is the block diagram of system of the present utility model.
Fig. 2 is a host interface circuit schematic diagram of the present utility model.
Fig. 3 is an extension circuit schematic of the present utility model.
Fig. 4 is an electronic display fundamental diagram of the present utility model.
Label is in the accompanying drawing:
Embodiment
(embodiment 1)
See Fig. 1 and see that Fig. 2, present embodiment comprise main frame 1, main phone 2, extension set 3, electronic display 4 and system power supply 5.
See Fig. 2, main frame 1 comprises interface circuit and signal processing, and interface circuit is used for main frame 1 communicates by letter with 5 of system power supplies with main phone 2, extension set 3, electronic display 4, and signal processing is used for the signal that various piece is sent is handled.System power supply 5 becomes DC32V and two groups of direct currents of DC19V by one group of transformer rectifying and voltage-stabilizing after step-down, two groups of power grounds link to each other, wherein DC32V is the working power of phone and ward display screen, and DC19V becomes behind the DC12V working power as system by the three terminal regulator voltage stabilizing.When main frame 1 when extension set 3 is called out, the double-audio signal that telephone set sends is introduced interface circuit by LN1 and LN2, double-tone address signal frequently is from P8 mouth input signal processing section.The single-chip microcomputer of signal processing obtains the address code of being called out extension set 3 by double-tone frequency decoding chip, is called out extension sets 3 address signals to all extension sets 3 outputs that hang on the bus then.This signal is introduced by P5, by triode Q7 extension set 3 address signals that are coupled on communication bus EX1 and EX2.When main frame 1 was called out extension set 3, signal processing unit produced ringing tone signal automatically, and by P2 mouth input interface circuit, drove phone receiver SPK2 through triode Q14.In the time of agreement, if no extension set 3 answer signals, signal processing unit will produce busy-back signal automatically, and it is imported by the P2 mouth equally.In actual use, when phone adopts hand-free function, backward signalling and busy-back signal can be imported from the P3 mouth, be driven cabinet loud speaker SPK1 by triode Q5.Bus quiescent operation voltage is DC12V, and address signal is a binary code, is superimposed upon on the quiescent operation voltage.
Call signal when received main frame 1 by calling extension set 3 hangs up bus automatically with extension set 3.Extension set 3 voice signals are sent to audio phase locking ring LM567 in the interface circuit by bus behind frequency modulation.Voice signal after the demodulation amplifies the receiver SPK2 that drives in the telephone set through triode Q2.Main frame 1 amplifies through triode Q8 from the voice signal that microphone sends, and is coupling on the system bus by Q11.When extension set 3 when main frame 1 is called out, extension set 3 extension set 3 address signals that on communication bus EX1 and EX2, are coupled.R35 is the address signal sampling resistor in the interface circuit, and the voltage signal after the sampling enters this schmitt trigger shaping that is made of amplifier LM324 after RC filtering, calls out extension set 3 addresses by P10 entering signal processing unit.This moment, phone was in hook state, and signal processing unit is play the tinkle of bells by the P1 mouth to main frame 1, and Q3 produces the phone the tinkle of bells, and Q13 and Q16 produce the tinkle of bells of main frame 1 cabinet SPK1.When short circuit appearred in bus, triode Q11 emitter-base bandgap grading output current was bigger, and promptly bus current is bigger; P11 mouth output this moment high level is after signal receiving unit receives this short-circuit signal, immediately from low level of P6 port output; make Q11 become cut-off state, thereby reach short-circuit protection function.P7 is that main frame 1 is to extension set 3 call address input ends in the interface circuit.R33, R34 and D11 constitute signal sample circuit, and it gathers extension set 3 address signals from bus.When inconsistent, produce error code in the expression information process of transmitting with detection signal when sending signal, signal processing unit will be retransmitted automatically, guarantee to send signal reliably.
See Fig. 3, extension set 3 adopts the PIC12C508 single-chip microcomputer of Microchip company as controller.When system was in static state, direct voltage was DC12V on the bus, after the triode voltage stabilizing, for extension set 3 provides a stable operating voltage.When bus is in idle condition, each extension set 3 is in the accepting state of downlink call signal, triode Q6 is in cut-off state on the extension set 3 at this moment, audio phase locking ring LM567 is in the state of hanging up, the power consumption of each extension set 3 is very little, and operating current only has 0.5mA, when hanging with more extension set 3 on the bus, flow through less static working current on the bus, guarantee system's operate as normal.The GP2 pin of PIC single-chip microcomputer is the receiving terminal of downlink call signal.When receiving call signal, the PIC single-chip microcomputer then checks whether call out this machine.If this machine of calling, then the GP1 pin is exported a high level, and triode Q6 is in the saturation conduction state, gives audio phase locking ring LM567 power supply, and then this extension set 3 is in the intercommunication state.If what call out is not this machine, then GP1 keeps low level, and triode is in cut-off state, and then this extension set 3 is in low power consumpting state.The GP1 pin of PIC single-chip microcomputer is the call address signal output part.When pressing call button, GP1 pin OPADD signal is coupling on the system bus through Q5.After main frame 1 receives calling, will send answer signal rapidly, after extension set 3 received answer signal, then the GP1 pin was exported a high level, and triode is in the saturation conduction state, gives audio phase locking ring LM567 power supply, and then this extension set 3 is in the intercommunication state.When extension set 3 is in and main frame 1 intercommunication state, descending voice signal directly drives extension set 3 loud speakers by bus.Up voice signal is modulated to the FM signal that centre frequency is 100KHZ by audio phase locking ring LM567, and Q5 is coupled on the system bus by triode.
See Fig. 4, adopt self-defining I between main frame 1 and the electronic display 4
2The C bus realizes half worker communication; electronic display 4 is used to show real-time call information; guarantee that the nurse also can in time understand call information walking in the exterior feature; when no call state; electronic display 4 is as digital clock; show real-time time, the call information of demonstration and real-time time communicate by the I/O mouth of single-chip microcomputer.The working power of electronic display 4 is supplied with by display in the interface circuit and ground wire.Main frame 1 adopts half worker to communicate by letter with electronic display 4, and the call information of demonstration and real-time time transmit electronic display 4 by display and ground wire.When main frame 1 does not send display message, P6 mouth output high level in the interface circuit, triode Q9 is in the linear amplification district, thereby make triode Q10 be in the saturation conduction state, DP provides DC32V working power as electronic display 4, this power supply charges to capacitor C5 and C6, and capacitor plays energy storage and voltage stabilizing, and the voltage at two ends is powered to single-chip microcomputer and LED through three terminal regulator.Wherein D5 is a blocking diode, prevents that capacitor C5 and C6 are to the anti-phase charging of bus.When main frame 1 sent information, the state of P6 mouth changed with the variation of data.When the P6 mouth was low level, triode Q9 was in cut-off state, and DP exports a low level.The signal of electronic display 4 receives and shows and finished by single-chip microcomputer 89C2051, and R1 and R2 are signal sample circuit among Fig. 4, select suitable R1/R2 ratio, makes to obtain correct logic level on the Singal pin.
Should be appreciated that specific embodiment described above only is used to explain the utility model, and be not used in qualification the utility model.Conspicuous variation of being extended out by spirit of the present utility model or change still are among the protection range of the present utility model.
Claims (8)
1. medical ward calling system, comprise main frame (1) and the main phone (2) that is connected with main frame (1), extension set (3), electronic display (4) and system power supply (5), main frame (1) and main phone (2) are installed in nurses' office, extension set (3) is installed in patient's head of a bed, electronic display (4) is installed in the corridor, ward, system power supply (5) is used for power supply, it is characterized in that: main frame (1) and main phone (2), extension set (3), adopt PLC technology to communicate between electronic display (4) and the system power supply (5), main frame (1) and extension set (3) adopt the nonpolarity connection of two core service cables.
2. a kind of medical ward according to claim 1 calling system, it is characterized in that: described main frame (1) comprises interface circuit and signal processing, interface circuit is used for communicating by letter between main frame (1) and main phone (2), extension set (3), electronic display (4) and system power supply (5), and signal processing is used for the signal that individual assembly transmits is handled.
3. a kind of medical ward according to claim 2 calling system, it is characterized in that: described main frame (1) and extension set (3) adopt half-duplex data communication and full duplex voice communication, downlink voice adopts baseband transmission, ascending voice adopts the FM frequency modulation technology, centre frequency is 100KHZ, data-signal adopts the direct superposition of mode of data symbols on the direct voltage of power supply, realizes semiduplex data communication.
4. a kind of medical ward according to claim 3 calling system is characterized in that: described main frame (1) adopts the Star Network structure with extension set (3), and each branch road can connect a plurality of extension sets (3).
5. a kind of medical ward according to claim 4 calling system is characterized in that: described extension set (3) adopts the PIC12C508 single-chip microcomputer of Microchip company as controller.
6. a kind of medical ward according to claim 5 calling system is characterized in that: adopt by the existing I of the I/O cause for gossip of single-chip microcomputer between described main frame (1) and the electronic display (4)
2The C bus realizes half worker communication.
7. a kind of medical ward according to claim 6 calling system, it is characterized in that: described electronic display (4) is used to show real-time call information, when no call state, electronic display (4) is as digital clock, show real-time time, the call information of demonstration and real-time time communicate by the I/O mouth of single-chip microcomputer.
8. a kind of medical ward according to claim 7 calling system, it is characterized in that: described system power supply (5) becomes DC32V and two groups of direct currents of DC19V by one group of transformer rectifying and voltage-stabilizing after step-down, two groups of power grounds link to each other, wherein DC32V is the working power of phone and ward display screen, and DC19V becomes behind the DC12V working power as system by the three terminal regulator voltage stabilizing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010203020131U CN201656973U (en) | 2010-02-01 | 2010-02-01 | Medical sick room calling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010203020131U CN201656973U (en) | 2010-02-01 | 2010-02-01 | Medical sick room calling system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201656973U true CN201656973U (en) | 2010-11-24 |
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ID=43122201
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010203020131U Expired - Fee Related CN201656973U (en) | 2010-02-01 | 2010-02-01 | Medical sick room calling system |
Country Status (1)
| Country | Link |
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| CN (1) | CN201656973U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103413421A (en) * | 2013-07-17 | 2013-11-27 | 湖南长城医疗科技有限公司 | Ward comprehensive information system based on broadband power line carrier, and communication method thereof |
-
2010
- 2010-02-01 CN CN2010203020131U patent/CN201656973U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103413421A (en) * | 2013-07-17 | 2013-11-27 | 湖南长城医疗科技有限公司 | Ward comprehensive information system based on broadband power line carrier, and communication method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101124 Termination date: 20120201 |