CN1052039A - Electronic diapers - Google Patents

Abstract

An electronic paper diaper for baby and unconscious patient to detect excrement and urine is composed of an acousto-optic alarm unit for electronic logic detection, and a paper diaper with soft electrodes. When the user excretes feces and urine, the soft electrode is wetted to trigger the flashing and sounding alarm.

Description

The invention relates to a diaper, in particular to an electronic paper diaper with a urine detection and reporting device containing an electronic logic circuit.

In order to improve the performance of diapers, many structural improvements have been made to diapers. Such as disposable diapers, multi-layer diapers, etc., which greatly improve the hygroscopicity and impermeability of diapers. But this kind of diapers can't make the nursing staff discover the situation that the diaper is contaminated by feces and urine in time, so that the diaper user's buttocks are immersed in urine for a long time and skin infection is prone to occur. In order to overcome this problem, the present invention proposes an electronic detection report The electronic paper diaper, which can send out the contamination of the diaper with feces and urine to the nursing staff in time.

The purpose of the present invention is to provide an electronic paper diaper used by infants and unconscious patients. When the user excretes feces and urine and wets the soft electrodes of the device, the flashing and sound reports are triggered, which can reduce the pollution of the user by feces and urine, which is beneficial to cleanliness and sanitation.

Another object of the present invention is to provide an electronic diaper with a small volume, simple structure, safety, reliability, low power consumption and stable operation of the electronic stool and urine reporting device.

An electronic paper diaper provided by the present invention includes an electronic detection and reporting device, a paper diaper and soft electrodes placed in the paper diaper, and the electronic detection and reporting device detects through the soft electrodes. When the soft electrode is wetted by excrement and excrement of the user, its resistance value drops sharply, triggering flashing lights and sound reports.

The invention has the advantage that it can timely send information to nursing staff whether the diaper is polluted by feces or urine.

Another advantage of the present invention is that the provided electronic paper diaper is low in cost, the used reporting device is small in size, simple in structure, stable and reliable in operation, and safe in use.

Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

Figure 1 is an electrical schematic diagram of an electronic diaper.

In Fig. 1, the electronic detection and reporting device comprises a detection resistor [R ₃ ], a multivibrator connected to the detection resistor [R ₃ ], an inverter connected to the multivibrator, and the inverter A drive switch circuit connected to the device, and a light emitting diode and a buzzer connected to the drive switch circuit.

The soft electrode [A] consists of two slender conductive films, that is, the first slender conductive film and the second slender conductive film, which are pasted on a corresponding insulating paper. It is placed in the interlayer of the diaper, and its first The slender conductive film is connected to the positive terminal of the power supply (DC3-5 volts) through the power switch [K] through a slender insulated wire, and the second slender conductive film is connected to the detection resistor [R ₃ ] through another slender insulated wire The upper end is connected, and the other end of the detection resistor [R ₃ ] is grounded. In this way, the power supply (DC3-5 volts), the resistance between the two conductive films of the soft electrode [A], and the detection resistor [R ₃ ] are connected in series to form a detection circuit. The resistance between the two films of [A] is very large, so the upper end of the detection resistor [R] is at a low potential (close to the "ground" level). drop, so that the upper end potential of the detection resistor [R ₃ ] rises to a high potential (“1” level).

The multivibrator is composed of three NAND circuits [1, 2, 3], a capacitor [C ₁ ], and a resistor [R ₂ , R ₁ ]. Its specific connection is that one end of the resistor [R ₁ ] is connected to the input terminal of the NAND gate [1], the output terminal of the NAND gate [1] is connected to an input terminal of the NAND gate [2], and the NAND gate [2] is connected to the input terminal of the NAND gate [2]. ] The other input end is connected to the upper end of the detection resistor [R ₃ ], and this end is the control input end of the multivibrator. The output terminal of the NAND gate [2], one end of the capacitor [C ₁ ], the input terminal of the NAND gate [3], and the input terminal of the NAND gate [4], namely the inverter, are connected together. The terminal is the output terminal of the multivibrator, the output terminal of the NAND gate [3] is connected to one terminal of the resistor [R ₂ ], the other terminal of the resistor [R ₂ ], the other terminal of the capacitor [C] and the resistor [R ₁ ] The other end of the three-terminal connection. When the upper end of the detection resistor [R ₃ ] is at a low potential, the output end of the NAND gate [2] is blocked at a high level ("1" level). This level passes through the NAND gate [3] and the NAND gate [1], so that an input terminal of the NAND gate [2] also maintains a high level. When the upper end of the detection resistor [R ₃ ] is at high potential (“1” level), both input terminals of the NAND gate [2] are at high level, and its output terminal is at “0” potential, then the NAND gate [2] 3] When the output terminal is high potential, the capacitor [C ₁ ] is reversely charged, and the upper terminal potential of the capacitor [C ₁ ] rises slowly with the time constant of [C ₁ ] and [R ₂ ]. When the upper terminal potential of the capacitor [C ₁ ] rises to " 1” level, the output of NAND gate [1] is low level, the output of NAND gate [2] returns to high level, the output of NAND gate [3] is low level, and the capacitor [C ₁ ] turns into positive When it is charged to the charging direction, its upper end potential turns to drop. When it drops to "0" level, the capacitor [C ₁ ] is reversely charged through the NAND gate [1, 2], so that the above process is repeated continuously to form a multivibrator multivibrator. The above-mentioned NAND gate [1, 3] should be connected to only play the role of a NOT gate.

The inverter is composed of a NAND gate circuit [4], and is connected to only function as a NOT gate. Its input terminal is connected to the output terminal of the above-mentioned multivibrator, and its output terminal is connected to the input of the driving switch circuit [G ₁ ]. The terminal is connected to the base. Its function is isolation, so that the oscillation of the multivibrator is not affected by the work of the alarm circuit.

The drive switch circuit [G ₁ ] is a power gate circuit, its collector is connected with the branch of the light-emitting diode [LED] and its current limiting resistor [R ₄ ] and the branch of the buzzer [B], and the two branches are connected in parallel . When the driving switch circuit [G ₁ ] is turned on, the light-emitting diode [LED] emits light and the buzzer [B] sounds.

The working process of electronic diapers is briefly described as follows:

1. When there is no feces and urine, the diaper [T] is dry, and the resistance between the two conductive films of the soft electrode [A] is very large (>>R ₃ ), so the detection resistor [R ₃ ] divides a very small voltage, Its upper end is close to the ground potential, then the NAND gate [2] is blocked, its output is maintained at high level, the inverter [4] outputs low potential, the driving switch circuit [G ₁ ] is in a cut-off state, and the light-emitting diode [LED] No light, buzzer [B] does not sound.

2. When there is feces and urine, the diaper [T] becomes wet, and the insulating paper between the two conductive films of the soft electrode [A] in the interlayer is damp, which makes the resistance between the two conductive films drop suddenly (<< R ₃ ), so the detection The resistance [R ₃ ] divides a large voltage, and a high potential appears at its upper end, then the NAND gate [2] is turned on, and the multivibrator generates multivibrator at its own natural frequency. Due to the isolation of the NAND gate [2] function, this oscillation frequency is not affected by the humidity of the diaper, the output of the inverter [4] is high potential for half a cycle and low potential for half a cycle with this oscillation, and the drive switch [G ₁ ] is also oscillating with the multivibrator When the cycle is half-cycle on and half-cycle off, the light-emitting diode [LED] and the buzzer will flash and sound synchronously with this oscillation frequency, and send an alarm message to the relevant personnel.

The voltage change on the above detection resistor is input to the multivibrator through the logic gate to make it oscillate under control, so the system operation is not affected by the change of urine humidity, and the control is stable (not "0" or "1").

In this multivibrator: only the NAND gate [2] connected to the detection resistor [R] is necessary, and the rest of the NAND gate [1, 2] can also be used as a NOR gate or a NOR gate. Except for the above-mentioned embodiment, There are also other various forms of connection.

Diapers are composed of two or more layers of paper and cloth with strong water absorption and flexibility. There are various specifications for their shape, size, and thickness, such as thin, thick, small, medium, and large sizes. Its main feature is that the above-mentioned soft electrodes are arranged in the interlayer of the paper diaper. Due to its low cost, it is for one-time use.

The active devices and inverters of the multivibrator are composed of electronic logic gate circuits, so the circuit structure is simple, the components are small and the volume is small, and the power consumption is low.

The whole machine uses 3-5V DC logic circuit power supply voltage as the voltage source, so it is safe to use.

The potential change on the detection resistor for detecting whether there is urine is input into the multivibrator through a logic gate, and the output of the multivibrator is driven through an isolation inverter to drive flashes and sounds. The above-mentioned logic gate and inverter play the role of isolation of input and output, thus making the system work stably, and will not make the oscillation frequency and work of the multivibrator be affected by its input-output circuit.

Claims (7)

1, a kind of electronic paper diaper, its feature comprises: detection of electrons newspaper showing device; The paper napkin; Be placed in the soft electrode in the described paper napkin; Described detection of electrons newspaper showing device detects by described soft electrode, and after user relieved oneself the described soft electrode of eliminating dampness by diuresis, the newspaper that triggers the described detection of electrons newspaper showing device flash of light and the sound showed.

2, electronic paper diaper according to claim 1 is characterized in that described detection of electrons newspaper showing device comprises the detection resistance that links to each other with described soft electrode, the multivibrator that is connected with described detection resistance, the phase inverter that links to each other with this multivibrator, the driving switch circuit that links to each other with this phase inverter and the light emitting diode and the buzzer that link to each other with described driving switch circuit.

3, electronic paper diaper according to claim 2 is characterized in that the active device in the described multivibrator is made up of the electronic logic gate circuit, and described phase inverter is an electronic logic gate circuit.

4, electronic paper diaper according to claim 1 is characterized in that the described paper napkin are made up of water absorption strong, flexible two to multiwalled paper and cloth, is provided with described soft electrode in its interlayer.

5, electronic paper diaper according to claim 1, it is characterized in that described soft electrode is made up of the first elongated conductive film, the second elongated conductive film, bibulous insulating paper, the described first elongated conductive film and the described second elongated conductive film are attached to respectively on the described insulating paper.

6, according to claim 3,5 described electronic paper diapers, the first elongated conductive film that it is characterized in that described soft electrode can link to each other with supply voltage by the insulation thin wire, the described second elongated conductive film links to each other with described detection resistance one end, this links to each other on the input of the described electronic logic door that inserts described multivibrator again, described detection resistance other end ground connection, sort circuit connects to be made when described soft electrode is in drying regime, described detection resistance one end be in " " current potential, make described multivibrator be in the failure of oscillation state, when soft electrode is in dampness, described detection resistance one end is in " height " current potential, makes described multivibrator be in the oscillating alarm state.

7,, it is characterized in that described multivibrator is made up of three electronic logic doors, two resistance, a capacitor according to claim 1,2 described electronic paper diapers.

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