CN2422698Y

CN2422698Y - Nursing radio notifying device

Info

Publication number: CN2422698Y
Application number: CN 00231122
Authority: CN
Inventors: 孙可法
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-04-07
Filing date: 2000-04-07
Publication date: 2001-03-07
Anticipated expiration: 2010-04-07

Abstract

The utility model relates to a wireless notifying device for nursing, which is suitable for urine damp or patient recourse. The utility model is composed of an emitter and a receiver. A circuit board of the emitter is provided with a crystal oscillator, and the output stage of a switch state of the crystal oscillator is connected in series to an emission electrode of an emission transistor. A battery circuit is connected with recourse button switches which are in parallel connection and a base electrode transistor switch which is controlled by a urine damp detecting sensor. A circuit board of the receiver is provided with a selective amplifier and a crystal oscillator of which the oscillation frequency is the same with the emitter. The utility model has the characteristics that the circuit structure is simplified, the volume is small, the cost is reduced and the notifying reliability is improved.

Description

The wireless informer of nursing

The utility model is a kind of suggestion device, relates in particular to the wireless informer of nursing that a kind of suitable urine is wet or patient seeks help.

Existing informer basic structure comprises that sound, light generation circuit board, pushbutton switch or urine are wet and detects sensor, is directly with a kind of informer of sound, light transmission information, and its operating distance is limited, and it is promptly ineffective to break away from its reach informer.A kind of wireless informer can enlarge the reach of informer relatively, and its function comprises seeks help, urinates beyond wet the informing, also has functions such as regularly prompting, hypnosis, and its circuit structure is complicated, it is higher to produce height.

The purpose of this utility model provides a kind of have urine wet, seek help basic function, the wireless informer of nursing simple in structure, that processing cost is lower.

The purpose of this utility model is realized by following technical scheme: the circuit board of transmitter is provided with crystal oscillator, the output stage of its on off state is serially connected in the emitter of ballistic transistor, be connected to seek help pushbutton switch and the transistor switch that are in parallel in the powered battery loop, the pushbutton switch of seeking help is located at case panel, is serially connected with the wet sensor that detects of urine in the base loop of transistor switch; The circuit board of receiver is provided with the frequency-selecting amplifier that is made of the shunt-resonant circuit built-in no wire loop and electric capacity, and its output is connected to the crystal oscillator identical with the transmitter frequency of operation, its amplification output triggering sound, light generation integrated circuit.

The ballistic transistor of said transmitter, the built-in aerial ring that its collector connect is parallel with trimmer.

The utility model is compared with existing wireless informer, has under the prerequisite of urinating wet and the basic function of seeking help, and circuit structure is simplified, and volume is small and exquisite, and cost reduces, and informs that reliability increases.

Below in conjunction with embodiment and description of drawings the utility model thereof.

Accompanying drawing 1 emitter structures synoptic diagram accompanying drawing 2 receiver architecture synoptic diagram accompanying drawings 3 transmitter electrical schematic diagram accompanying drawings 4 receiver electrical schematic diagrams

As Fig. 1, the transmitter of 3 illustrated embodiments, it is by transmitter housing 1, the pushbutton switch 2 of seeking help, connect the wet connector 3 that detects sensor of urine, supplying cell 4 and relay indicating light 5 are formed, the circuit board that is characterized by in the housing of the present utility model is provided with the crystal oscillator that the crystal Z1 by two phase inverters among the IC1TC4069 and 28MHZ forms, the output stage of its on off state is composed in parallel by other four phase inverters of IC1, and be serially connected in ballistic transistor BG2 emitter over the ground in the path, when the output stage output terminal is low level, pipe BG2 work, otherwise do not work, built-in aerial ring T1 launches the electromagnetic wave of 28MHZ, and coverage is advisable with 10 meters radiuses.Be connected to trimming capacitor C 3 for strengthening launching effect pipe BG2 collector, make it to constitute the shunt-resonant circuit of 28MHZ with antenna loop.Lamination 9V battery is adopted in power supply, the pushbutton switch AN1 that seeks help is located on the housing and the power switch of holding concurrently, this switch also is parallel with transistor BG1 and makes transistor switch, its base stage operating voltage detects sensor and provides by resistance R 1 and urine are wet, base stage is through resistance R 14 not conductings of ground connection at ordinary times, the wet back of urine base stage is positive bias conducting and saturated, and transmitter is promptly worked, and working mark can be that light emitting diode D1 illustrates from the relay indicating light of housing.

Fig. 2, the 4th, the receiver of embodiment, it is by receiver housing 6, sound window 7, power switch 8, battery 9 and relay indicating light 10 are formed, the circuit board that is characterized by in the housing of the present utility model is provided with by relevant phase inverter in the IC2TC4069 hex inverter, transistor BG4 and frequency are the oscillator that the crystal Z2 of 28MHZ forms, the electricity of the 28MHZ of antenna loop T2 induction is grown ripple via transistor BG3, T2, behind the frequency-selecting amplifier that electrical equipment C5 constitutes, amplify by the relevant phase inverter of IC2, make crystal oscillator satisfy oscillating condition and starting of oscillation, its output connects the IC3KD152N music integrated circuit of acyclic mode work, cross-talk device Y and light emitting diode D2 work.When transmitter quits work or during the input of the signal of non-28MHZ, receiver is not worked, and makes to inform that reliability increases.

Claims

1, the wireless informer of nursing, it is respectively by housing, power switch, relay indicating light, circuit board, built-in aerial ring and supplying cell are formed receiver and transmitter, receiver also has loudspeaker, transmitter also has to connect urinates the wet connector that detects sensor, it is characterized in that: transmitter circuit board is provided with crystal oscillator, the output stage of its on off state is serially connected in the emitter of ballistic transistor, be connected to seek help pushbutton switch and the transistor switch that are in parallel in the powered battery loop, the pushbutton switch of seeking help is provided with case panel, be serially connected with the wet sensor that detects of urine in the transistor switch base loop, the circuit board of receiver is provided with the frequency-selecting amplifier that is made of the shunt-resonant circuit built-in aerial ring and electric capacity, its output is connected to the crystal oscillator identical with the transmitter frequency of operation, its amplification output triggering sound, light generation integrated circuit.

2, the wireless informer of nursing as claimed in claim 1 is characterized in that: the ballistic transistor of said transmitter, the built-in aerial ring that its collector connect is parallel with trimmer.