CN209560665U - A kind of sick room calling system - Google Patents

Abstract

The utility model discloses a kind of sick room calling systems, belong to electronic technology field, including display screen, keyboard, combined aural and visual alarm, called host controller, photoelectric coupled circuit, modulating and demodulating signal circuit, power signal line and several calling extension sets, the display screen, keyboard and combined aural and visual alarm are connect with called host controller, the called host controller is connect through power signal line with several calling extension sets through photoelectric coupled circuit and modulating and demodulating signal circuit connection, the modulating and demodulating signal circuit.The communication mode being superimposed by using two-wire system signal and power supply, host only needs both threads to be attached with the calling classification of each bed, this both threads is both transmission line and the power supply line of each extension set, not only reduce wiring cost, and the shortcomings that radio extension wrong report, often replacement extension set battery can be overcome, the case where to effectively avoid wireless calling conflict, while call answering ability is improved, it reduces and calls unsuccessful situation.

Description

A kind of sick room calling system

Technical field

The utility model relates to electronic technology field more particularly to a kind of sick room calling systems.

Background technique

Sick room calling system is the important means for transmitting clinical information, is that direct request helps patient on one's sick bed Calling tool.The request of patient can quickly be passed to attendant physician or nurse, and in duty room surveillance center's computer Make corresponding information record and alarm.Sick room calling system is to improve one of hospital and the necessary equipment of ward nursing level.

Existing many sick room calling systems are using being wirelessly wirelessly transferred, but due to wirelessly passing It is defeated usually to make apart from limited, and there is the case where Call Collision it occur frequently that, affect ward in case of emergency Calling.Patient sometimes because call obstructed or signal conflict and making call it is unsuccessful to patient bring treatment not in time and There is life danger etc., while also bringing the risk arrived very much to wish, therefore the occurrence of in order to avoid these, needs to design A kind of calling is more stable, the sick room calling system that less fortuitous event occurs.

Utility model content

The purpose of this utility model is to provide a kind of sick room calling systems, solve existing sick room calling system and are easy to appear Signal call conflict usually occurs calling unsuccessful technical problem.

A kind of sick room calling system, including display screen, keyboard, combined aural and visual alarm, called host controller, photoelectric coupled circuit, Modulating and demodulating signal circuit, power signal line and several calling extension sets, the display screen, keyboard and combined aural and visual alarm with exhale Host controller is made to connect, the called host controller is through photoelectric coupled circuit and modulating and demodulating signal circuit connection, the signal Modulation-demodulation circuit is connect through power signal line with several calling extension sets.

Further, the photoelectric coupled circuit includes triode Q5, photoelectrical coupler and resistance R5, R8, R10, the resistance Mono- termination power of R5, the input terminal of another termination photoelectrical coupler, output end one end of the photoelectrical coupler connects through resistance R8 Power supply, the collector connection of another termination triode Q5, the transmitting collection ground connection of the triode Q5, the triode Q5 collector With modulating and demodulating signal circuit connection.

Further, the modulating and demodulating signal circuit include triode Q1, Q2, Q3, Q4, Q5, Q6, diode D1 ', D2 ', the transmitting collection of the triode Q1 connect power supply, and one end of resistance R1 and one end of resistance R2 of base stage and setting connect, collection Electrode and the diode D2 ' input terminal of setting connect, and the other end of resistance R2 is connect with the collector of triode Q2, triode Q2 Transmitting collection ground connection, the resistance R3 that collector is set with counting pulse pin SCLK connect, the output of diode D1 ' and D2 ' End is connect with the transmitting collection of triode Q6, and the transmitting collection of the triode Q3 is connect with the collector of triode Q6, three pole Pipe Q3 grounded collector, base stage are connect through resistance R6 with the collector of triode Q4, the triode Q4 base stage through resistance R7 with The base stage of the DATA connection of reset signal pin, triode Q6 is connect through resistance R11 with triode Q7 emitter, the collection of triode Q7 Electrode ground connection, base stage are connect through resistance R12 with reset signal pin DATA.

Further, calling extension set includes call button and calling extension set circuit, and ward is arranged in the call button Beside hospital bed, call button and calling extension set circuit connection.

Further, the calling extension set circuit includes rectification circuit, voltage regulator circuit, counting circuit coding circuit and key Circuit, the rectification circuit are connect with voltage regulator circuit and key circuit respectively, the voltage regulator circuit, counting circuit coding circuit and Key circuit is connect with counting circuit coding circuit.

Further, the rectification circuit is made of four diodes in parallel connections.

Further, the voltage regulator circuit includes triode Q8, Q9, Q10, diode D3, the base stage of the triode Q8 It is connect through resistance R21 with the collector of triode Q9, transmitting collection is connected with the rectifying circuit, the input terminal of collector and diode D3 Connection, the base of base stage and triode Q10 of the output end of the diode D3 respectively through resistance R22 and resistance R24 triode Q9 Pole connection, the collector of the triode Q10 are connect with the base stage of triode Q9, triode Q10 transmitting collection ground connection.

Further, the counting circuit coding circuit includes counting chip and 6 coding diodes, 6 codings The connection of the terminal count output of diode and counting chip.

Further, the key circuit includes light emitting diode DS1 and triode Q12, Q13, the light emitting diode The connection of one end of DS1 input terminal and call button, output end are connect with the transmitting collection of triode Q12, the collection of the triode Q12 Electrode ground connection, base stage are connect through resistance R29 with the collector of triode Q13, and the base stage and counting circuit of the triode Q13 is compiled Code circuit connection.

The utility model uses above-mentioned technical proposal, and the utility model has following technical effect that

The communication mode that the utility model is superimposed by using two-wire system signal and power supply, becomes after call signal is modulated AC signal is transferred to power signal line, and for two power signal lines regardless of positive and negative, calling extension set arbitrarily connects two power supply signals Line can complete work, and host only needs both threads to be attached with the calling classification of each bed, this both threads is both transmission line It is the power supply line of each extension set again, not only reduces wiring cost, and radio extension wrong report, often replacement extension set electricity can be overcome The shortcomings that pond, thus the case where effectively avoiding wireless calling conflict, while call answering ability is improved, reduce calling not Successful problem.

Detailed description of the invention

Fig. 1 is the system block diagram of the utility model.

Fig. 2 is the photoelectric coupled circuit of the utility model and the schematic diagram of modulating and demodulating signal circuit.

Fig. 3 is the calling extension circuit schematic of the utility model.

Specific embodiment

For the purpose of this utility model, technical solution and advantage is more clearly understood, referring to the drawings and enumerate excellent Embodiment is selected, the utility model is further described.However, it is necessary to illustrate, many details listed in specification It is specific even without these just for the sake of making reader have a thorough explanation to the one or more aspects of the utility model Details also may be implemented the utility model these aspect.

As shown in Figure 1, a kind of sick room calling system structural block diagram according to the present utility model, including display screen, keyboard, sound Light crossing-signal, called host controller, photoelectric coupled circuit, modulating and demodulating signal circuit, power signal line and several calling extension sets, The display screen, keyboard and combined aural and visual alarm are connect with called host controller, and the called host controller is through optocoupler electricity Road and modulating and demodulating signal circuit connection, the modulating and demodulating signal circuit connect through power signal line and several calling extension sets It connects.

Display screen, keyboard, combined aural and visual alarm, called host controller, photoelectric coupled circuit, modulating and demodulating signal circuit are usually It is mounted on the doctors places on duty such as nurse's duty room either nurse doctor's logging desk.Keyboard is matrix keyboard, directly for doctor Raw or nurse carry out using.Combined aural and visual alarm is for reminding doctor or nurse to see the call information on display screen.Calling master Machine controller is controlled using the single-chip minimum system of STC52 series or STM32 series.Its specific I/O draw connect and Installation is installed according to instruction manual.The processing of called host controller is simple data comparison and sending control signal Deng.The number of calling extension set can generally install the corresponding host of 80 calling extension sets.

As shown in Fig. 2, photoelectric coupled circuit includes triode Q5, photoelectrical coupler and resistance R5, R8, R10, the resistance R5 mono- Termination power, the input terminal of another termination photoelectrical coupler, output end one end of the photoelectrical coupler connect power supply through resistance R8, The collector connection of another termination triode Q5, the transmitting collection ground connection of the triode Q5, the triode Q5 collector and letter The connection of number modulation-demodulation circuit.Photoelectric coupled circuit can effectively reduce or remit influence of the forceful electric power to microprocessor, have isolation electricity Effect.

As shown in Fig. 2, the modulating and demodulating signal circuit include triode Q1, Q2, Q3, Q4, Q5, Q6, diode D1 ', D2 ', the transmitting collection of the triode Q1 connect power supply, and one end of resistance R1 and one end of resistance R2 of base stage and setting connect, collection Electrode and the diode D2 ' input terminal of setting connect, and the other end of resistance R2 is connect with the collector of triode Q2, triode Q2 Transmitting collection ground connection, the resistance R3 that collector is set with counting pulse pin SCLK connect, the output of diode D1 ' and D2 ' End is connect with the transmitting collection of triode Q6, and the transmitting collection of the triode Q3 is connect with the collector of triode Q6, three pole Pipe Q3 grounded collector, base stage are connect through resistance R6 with the collector of triode Q4, the triode Q4 base stage through resistance R7 with The base stage of the DATA connection of reset signal pin, triode Q6 is connect through resistance R11 with triode Q7 emitter, the collection of triode Q7 Electrode ground connection, base stage are connect through resistance R12 with reset signal pin DATA.

As shown in Fig. 2, its main function is by the pulse signal modulation of single-chip microcontroller to 15V.Using 15V voltage, it is long away from There can be stronger anti-interference ability during from transmission signal, to guarantee the stabilization of system.In Fig. 2, DATA is to reset letter Number pin, when DATA pin is high level, triode Q7, Q6, Q1 are not turned on, Q4, Q3 conducting, the A line electricity on signal wire It is flat to be pulled low, it resets each bed calling extension set all, counts again.SCLK is to count pulse pin, when DATA is low electricity When flat, SCLK is high level, Q2, Q1, Q6, Q7 are both turned on, and the superimposed voltage of 15V and 8V can be generated on signal wire A line, as The counting pulse signal of bed calling extension set.When SCLK be it is low, DATA is also low when, only Q7 and Q6 conducting, on signal wire only There is the voltage of 8V, this voltage provides power supply for each bed-extension.Wherein triode Q2, Q4, Q7 plays prime amplification.Resistance R13 is the middle power resistor of 27 Ω/1W, plays short-circuit protection.When construction personnel is during the installation process accidentally by two electricity Line short circuit, or after long-term use, so that electric wire aging causes two wire short-circuitings, due to there is R13 resistance at this time, system will It not will form very big short circuit current and bed calling extension set caused to be burned, to protect the safety of system.

As shown in figure 3, calling extension set includes call button and calling extension set circuit, ward is arranged in the call button Beside hospital bed, call button and calling extension set circuit connection.The calling extension set circuit includes rectification circuit, voltage regulator circuit, meter Number circuit code circuit and key circuit, the rectification circuit are connect with voltage regulator circuit and key circuit respectively, the pressure stabilizing electricity Road, counting circuit coding circuit and key circuit are connect with counting circuit coding circuit.The rectification circuit is by four diodes It is connected in parallel composition.The voltage regulator circuit includes triode Q8, Q9, Q10, diode D3, and the base stage of the triode Q8 is through electricity Resistance R21 is connect with the collector of triode Q9, and transmitting collection is connected with the rectifying circuit, and the input terminal of collector and diode D3 connect It connects, the base stage of base stage and triode Q10 of the output end of the diode D3 respectively through resistance R22 and resistance R24 triode Q9 Connection, the collector of the triode Q10 are connect with the base stage of triode Q9, triode Q10 transmitting collection ground connection.The counting Circuit code circuit includes counting chip and 6 coding diodes, and the counting of 6 coding diodes and counting chip exports End connection.The key circuit includes light emitting diode DS1 and triode Q12, Q13, the light emitting diode DS1 input terminal It being connect with one end of call button, output end is connect with the transmitting collection of triode Q12, the grounded collector of the triode Q12, Base stage is connect through resistance R29 with the collector of triode Q13, and the base stage and counting circuit coding circuit of the triode Q13 connects It connects.

Bed beeper realizes the calling of bed label using counting mode.It is connected into Fig. 3 using 4 1N4148 diodes whole The form of galvanic electricity stream, effect is to rectify the electric current on signal wire, does not distinguish the positive and negative of two signal wires, in this way can be with So that installer is easily installed, it is not necessary to remember which root line is that just, which root is negative.In addition, bed beeper also uses triode Series voltage stabilizing, process are: on VCC rising → Q10 base voltage rising → Q10 collector voltage decline → Q9 base voltage Liter → Q9 collector voltage rising → Q8 base voltage rising → Q8 saturation become smaller → output voltage becomes smaller → complete pressure stabilizing.Wherein Change the voltage value of the adjustable output pressure stabilizing of resistance value of resistance R24.Through testing, such pressure stabilizing scheme can generate stable electricity Pressure, enables the system to steadily work.And it is cheap due to triode, it can also reduce the cost of system.

Address code is carried out to each bed using counting chip in the extension set of calling out the numbers of this system.As shown in Fig. 3, have CLK pin input counts pulse, and Q14 ends when counter counts to (QF:QA) are 000111, Q13, Q12 conducting. If the call button S1 at this time on bed presses connection, signal lamp will be lit, and the level on signal wire is dragged down, Call signal is sent to corridor host.The coding principle of address is encoded using binary system, such as the company of Fig. 3 coding diode What the mode of connecing represented is (QF:QA)=(000111), therefore the number of the extension set is No. 7.

The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art For art personnel, without departing from the principle of this utility model, can also make several improvements and retouch, these improve and Retouching also should be regarded as the protection scope of the utility model.

Claims (9)

1. a kind of sick room calling system, it is characterised in that: including display screen, keyboard, combined aural and visual alarm, called host controller, Photoelectric coupled circuit, modulating and demodulating signal circuit, power signal line and several calling extension sets, the display screen, keyboard and acousto-optic report Alert device is connect with called host controller, and the called host controller connects through photoelectric coupled circuit and modulating and demodulating signal circuit It connects, the modulating and demodulating signal circuit is connect through power signal line with several calling extension sets.

2. a kind of sick room calling system according to claim 1, it is characterised in that: the photoelectric coupled circuit includes triode Q5, photoelectrical coupler and resistance R5, R8, R10, mono- termination power of resistance R5, the input terminal of another termination photoelectrical coupler, Output end one end of the photoelectrical coupler connects power supply through resistance R8, and the collector of another termination triode Q5 connects, and described three The transmitting collection of pole pipe Q5 is grounded, the triode Q5 collector and modulating and demodulating signal circuit connection.

3. a kind of sick room calling system according to claim 2, it is characterised in that: the modulating and demodulating signal circuit includes Triode Q1, Q2, Q3, Q4, Q5, Q6, diode D1 ', D2 ', the transmitting collection of the triode Q1 connect power supply, base stage and setting One end of resistance R1 is connected with one end of resistance R2, and diode D2 ' the input terminal connection of collector and setting, resistance R2's is another End is connect with the collector of triode Q2, the transmitting collection ground connection of triode Q2, the resistance R3 and count pulse that collector is set Pin SCLK connection, the output end of diode D1 ' and D2 ' are connect with the transmitting collection of triode Q6, the transmitting of the triode Q3 Collection is connect with the collector of triode Q6, the triode Q3 grounded collector, current collection of the base stage through resistance R6 Yu triode Q4 Pole connection, the triode Q4 base stage are connect through resistance R7 with reset signal pin DATA, and the base stage of triode Q6 is through resistance R11 It is connect with triode Q7 emitter, the grounded collector of triode Q7, base stage connects through resistance R12 and reset signal pin DATA It connects.

4. a kind of sick room calling system according to claim 1, it is characterised in that: calling extension set includes call button and exhales It is extension set circuit, the call button is arranged in beside the hospital bed in ward, call button and calling extension set circuit connection.

5. a kind of sick room calling system according to claim 4, it is characterised in that: the calling extension set circuit includes rectification Circuit, voltage regulator circuit, counting circuit coding circuit and key circuit, the rectification circuit respectively with voltage regulator circuit and key circuit Connection, the voltage regulator circuit, counting circuit coding circuit and key circuit are connect with counting circuit coding circuit.

6. a kind of sick room calling system according to claim 5, it is characterised in that: the rectification circuit is by four diodes It is connected in parallel composition.

7. a kind of sick room calling system according to claim 5, it is characterised in that: the voltage regulator circuit includes triode Q8, Q9, Q10, diode D3, the triode Q8 base stage connect through resistance R21 with the collector of triode Q9, transmitting collection with Rectification circuit connection, collector connect with the input terminal of diode D3, the output end of the diode D3 respectively through resistance R22 with The base stage of resistance R24 triode Q9 is connected with the base stage of triode Q10, and the collector of the triode Q10 is with triode Q9's Base stage connection, triode Q10 transmitting collection ground connection.

8. a kind of sick room calling system according to claim 5, it is characterised in that: the counting circuit coding circuit includes The terminal count output of counting chip and 6 coding diodes, 6 coding diodes and counting chip connects.

9. a kind of sick room calling system according to claim 5, it is characterised in that: the key circuit includes light-emitting diodes One end of pipe DS1 and triode Q12, Q13, the light emitting diode DS1 input terminal and call button connects, output end and three poles The transmitting collection of pipe Q12 connects, the grounded collector of the triode Q12, collector of the base stage through resistance R29 Yu triode Q13 Connection, the base stage of the triode Q13 are connect with counting circuit coding circuit.