A wireless calling device

Abstract

The utility model discloses a wireless calling device, include: single-chip microcomputer minimum system, by single-chip microcomputer, crystal oscillator circuit, reset circuit, download circuit and power supply circuit are constituteed. This wireless calling device, covers ordinary ward, critical care ward and critical patient whole scene demand, supports manual calling and automatic monitoring double mode, and matrix keyboard supports input sick bed number, selects calling type, and confirms through "#" key, satisfies ordinary patient autonomous operation demand, and critical patient detects hand position through infrared obstacle avoidance module, and combines pulse sensor real -time monitoring heart rate, and when being abnormal, automatically triggers emergency call and does not need manual operation, avoids the calling delay caused by patient unconsciousness or inconvenient movement, and host computer system and slave system establish networking through wireless signal, have low power consumption, anti -interference characteristic, support multiple equipment networking, guarantee the real -time transmission of calling information, need not wiring, use more safe.

Description

Technical Field

[0001] This utility model relates to the field of wireless calling device technology, and in particular to a wireless calling device. Background Technology

[0002] Modern hospitals have seen rapid improvements in their medical standards, leading to a growing demand for faster and more convenient access to healthcare services. Clinical call systems are a crucial means of transmitting clinical information, while ward call systems serve as emergency tools for patients to request diagnosis and care from on-duty doctors or nurses. Currently, hospitals place great emphasis on extending digital coverage to primary care departments. Hospital-wide digital coverage will provide patients with more and better healthcare services, while also improving the work efficiency of medical staff.

[0003] Traditional hospital call systems are primarily wired. However, wired call systems involve complex wiring, are prone to aging, and are difficult to repair in case of malfunctions. Modern fourth-generation call systems, on the other hand, exhibit a trend towards informatization and intelligence. They can exchange, collect, and transmit data with other IoT devices, enabling sensing and information interaction, thereby improving the efficiency and quality of medical services. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a wireless calling device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A wireless calling device, comprising:

[0007] The minimum system of a microcontroller consists of a microcontroller, a crystal oscillator circuit, a reset circuit, a download circuit, and...

[0008] Power supply circuit composition;

[0009] The LCD display module is configured with an OLED screen for displaying call information;

[0010] The matrix keyboard module is configured as a 4×4 matrix keyboard for entering call information;

[0011] The wireless signal transmitting and receiving module is configured as a ZigBee module for transmitting and receiving call signals;

[0012] The voice broadcast module is configured as a TTS module and is used to broadcast call information.

[0013] The pulse detection module is configured as a heart rate sensor to measure the electrical pulse signal in the patient's arm.

[0014] The infrared obstacle avoidance module includes an infrared sensor and an infrared receiver, used to detect whether the patient's arm is on the pulse detection module;

[0015] LED indicator lights are used to alert medical staff and patients;

[0016] The power supply module provides power to the microcontroller's minimum system.

[0017] The main unit system consists of a power supply module, an LCD display module, a voice broadcast module, a wireless signal transmission and reception module, and LED indicator lights;

[0018] The slave system consists of a power supply module, an LCD display module, a wireless signal transmission and reception module, a pulse detection module, an infrared obstacle avoidance module, a matrix keypad module, and LED indicator lights.

[0019] The host system and slave system are networked through wireless signal transmission and reception modules, and perform wireless signal transmission and reception.

[0020] As a further improvement of this utility model: the microcontroller of the minimum microcontroller system is set to an STM32F103C8T6 microcontroller, the reset mode of the reset circuit is hardware reset, and the crystal oscillator circuit consists of a 1M resistor, two crystal oscillators (S_C1 and S_C3 capacitors), four non-polarized capacitors, and two crystal oscillators.

[0021] As a further embodiment of this invention: the four non-polar capacitors are respectively connected to OSCIN, OSCOUT, S_C2 and S_C4, and the capacitors are respectively connected to the MCU pins PC14 and PC15. The crystal oscillator is connected in series between the two capacitors, and the 1M resistor is connected in series between the S_C1 and S_C3 capacitors and in parallel with the capacitors.

[0022] As a further embodiment of this invention: the audio output interface of the TTS module is connected to the audio input interface of the microcontroller, and the TTS module outputs the converted voice data through the connected audio output interface, while the microcontroller is connected to an external audio output device.

[0023] As a further improvement of this utility model: the information displayed by the LCD display module of the slave system includes the call bed number, call type, heart rate, and countdown. The countdown is set to 60 seconds, and the call type includes normal call and emergency call.

[0024] As a further improvement of this utility model: the information displayed by the LCD display module of the host system is the call bed number and the call type, and the information broadcast by the voice broadcast module is the call bed number and the call type.

[0025] As a further improvement of this utility model: the slave system is also equipped with an automatic call mode. In the automatic call mode, the pulse detection module detects the patient's arm pulse in real time. If the patient's pulse is abnormal, the slave system makes an emergency call, and the LCD display module of the host system displays the information synchronously, and the voice broadcast module broadcasts the information synchronously.

[0026] Compared with the prior art, the present invention provides a wireless calling device, which has the following beneficial effects:

[0027] This wireless calling device covers the needs of general wards, intensive care units, and critically ill patients across all scenarios. It supports both manual calling and automatic monitoring modes. The matrix keypad allows users to input bed numbers, select call types, and confirm via the "#" key, meeting the self-operation needs of ordinary patients;

[0028] Critically ill patients can have their hand position detected by an infrared obstacle avoidance module, and their heart rate can be monitored in real time by a pulse sensor. In case of an abnormality, an emergency call will be automatically triggered without manual operation, avoiding call delays caused by the patient's unconsciousness or inconvenience. Furthermore, the host system and slave system establish a network through wireless signals, which has low power consumption and anti-interference characteristics, supports multi-device networking, ensures real-time transmission of call information, and eliminates the need for wiring, making it safer to use.

[0029] The parts of this device not covered herein are the same as or can be implemented using existing technologies. This utility model has a simple structure and is easy to operate. Attached Figure Description

[0030] Figure 1 is a schematic diagram of the modular system of this utility model;

[0031] Figure 2 is the circuit diagram of the minimum system of the single-chip microcomputer of this utility model;

[0032] Figure 3 is a circuit diagram of the matrix keyboard module of this utility model;

[0033] Figure 4 is a circuit diagram of the OLED of this utility model;

[0034] Figure 5 is a circuit diagram of the wireless signal transmitting and receiving module of this utility model;

[0035] Figure 6 is a circuit diagram of the voice broadcast module of this utility model;

[0036] Figure 7 is a circuit diagram of the pulse detection module of this utility model;

[0037] Figure 8 is a circuit diagram of the infrared obstacle avoidance module of this utility model;

[0038] Figure 9 is a circuit diagram of the slave system of this utility model;

[0039] Figure 10 is a circuit diagram of the host system of this utility model. Detailed Implementation

[0040] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0041] A wireless calling device, as shown in Figures 1 to 10, includes: a host system consisting of a power supply module, an LCD display module, a voice broadcast module, a wireless signal transmitting and receiving module, and LED indicator lights; and a slave system consisting of a power supply module, an LCD display module, a wireless signal transmitting and receiving module, a pulse detection module, an infrared obstacle avoidance module, a matrix keypad module, and LED indicator lights; the host system and the slave system are networked through the wireless signal transmitting and receiving modules to transmit and receive wireless signals.

[0042] Reference Figure 2 The minimum microcontroller system consists of a microcontroller, crystal oscillator circuit, reset circuit, download circuit, and power supply circuit. The microcontroller in the minimum system is an STM32F103C8T6 microcontroller. PA10 and PA9 of the STM32F103C8T6 microcontroller are connected to the RXD and TXD pins of the download port (corresponding to the download circuit) and the RXD and TXD pins of the wireless signal receiver module, respectively. The download port is used to burn the program. Signal transmission between the host and slave systems is achieved by connecting to the wireless signal transmitter and receiver module.

[0043] Power is supplied through the TYPEC power port. The power supply module supplies power to the microcontroller through the power circuit. When power is on, the power indicator light will illuminate, indicating that the power circuit is working properly.

[0044] The reset circuit corresponds to a hardware reset mode, which is triggered by an external event. It can perform a reset operation on the entire system or a specific hardware module. The reset circuit is reset by manually pressing the reset button. When the program needs to be re-executed, pressing the reset button will cause the RST level of the reset circuit to go high, thus resetting the microcontroller.

[0045] The crystal oscillator circuit ensures that the frequency signal of the microcontroller system is synchronized with it, thereby making the operation of the entire control system more stable and reliable. It consists of a 1M resistor, two crystal oscillators (S_C1 and S_C3 capacitors), four non-polarized capacitors, and two crystal oscillators.

[0046] Four non-polarized capacitors are connected to OSCIN, OSCOUT, S_C2, and S_C4 respectively.

[0047] Connect the MCU pins PC14 and PC15. The crystal oscillator is connected in series between the two capacitors. The 1M resistor is connected in series between capacitors S_C1 and S_C3, and in parallel with the capacitors.

[0048] The crystal oscillators selected are 8 MHz and 32.768 kHz crystal oscillators. The frequency stability of the 8 MHz and 32.768 kHz crystal oscillators is very high, usually at the ppm (parts per million) level. They can maintain a stable clock signal over a wide temperature range, and have a long lifespan and low failure rate. This makes them perform well in long-term operation and applications with high system stability requirements. The overall transmission and reception performance of the wireless paging device is improved, enabling the wireless paging device to maintain a relatively accurate frequency signal for a long time.

[0049] Reference Figure 3 The matrix keyboard module is configured as a 4×4 matrix keyboard for entering call information. The 4×4 matrix keyboard uses 8 I / O lines to connect 16 keys. A set of I / O ports is defined as the pins of the matrix keyboard. The high four bits are connected to the column and the low four bits are connected to the row. In the microcontroller program, the input status of the matrix keyboard is read in a loop.

[0050] Generally, this is achieved by setting each row to a high level. First, all row lines are set to high, and then each column line is sequentially set to low, scanning the row lines. If a row line goes low, it indicates that a key has been pressed in the corresponding row. Next, the values ​​of all row and column I / O ports are read and compared with the code values ​​pre-stored in the system. The rows and columns of the matrix keyboard are connected to the microcontroller pins as shown in the figure. The purpose is to read the keyboard input signals by scanning the rows and columns of the matrix keyboard and convert them into corresponding numbers or characters for processing.

[0051] Table 1. Key Function Table of Matrix Keyboard Module

[0052]

[0053] Referring to Table 1, the matrix keyboard module has 16 keys: "A", "B", "C", "D", "#", "*", and "0-9". The A key corresponds to a regular ward, the B key corresponds to an intensive care unit (ICU), the C key modifies the ward number to be called, the # key confirms the call, and the 0-9 keys are for entering the ward number. The D key corresponds to a regular call, and the * key corresponds to an emergency call.

[0054] Reference Figure 4 The LCD module is configured as an OLED screen for displaying call information. The OLED screen main control chip is an integrated circuit chip used to control the OLED (organic light-emitting diode) screen. It is responsible for converting the input electrical signals into signals suitable for driving the OLED screen and controlling the display, brightness, color and other parameters of the OLED screen to achieve image display.

[0055] Data is transmitted to the OLED screen using the SPI interface. Data can be transmitted to the MOSI line of the OLED screen via the SPI bus, while a clock signal is provided via the SCK line. If the I2C interface is used, data can be transmitted via the SCL and SDA lines. The data format and protocol must be set according to the specifications of the OLED screen to ensure that the data can be correctly received and parsed by the screen.

[0056] Reference Figure 5 The wireless signal transmitting and receiving module is configured as a ZigBee module for transmitting and receiving call signals. The ZigBee module is hardware-connected to the microcontroller. Based on the specifications and documentation of both the ZigBee module and the microcontroller, corresponding software code is written, including initializing the ZigBee module, configuring its parameters, processing received and transmitted data packets, handling network topology, and handling errors and exceptions. Then, testing and debugging are performed to ensure the ZigBee connection to the microcontroller functions correctly, including sending and receiving test data packets and verification.

[0057] Ensure the reliability and stability of communication, handle errors and abnormal situations, ensure the normal operation of the host and slave systems, and complete the network setup.

[0058] Reference Figure 6 The voice broadcast module, configured as a TTS module, connects to the microcontroller and is used to broadcast call information. The audio output interface of the TTS module connects to the audio input interface of the microcontroller, and the TTS module outputs the converted voice data through the connected audio output interface. The voice is played through the microcontroller's audio output device (such as a speaker, headphones, etc.). The analog audio interface typically uses a DAC to convert digital audio signals into analog audio signals for output, while the digital audio interface typically uses an I2S or UART interface for data transmission.

[0059] Reference Figure 7 The pulse detection module, configured as a heart rate sensor, connects pin 3 to the microcontroller PA0 to measure the pulse electrical signal of the patient's arm. The heart rate sensor collects data on the light transmittance of the user's arm to obtain a weak pulse electrical signal, and has advantages such as high measurement accuracy, simple structure, low power consumption, and long service life.

[0060] The pulse detection module outputs signals via a serial port and can be connected to the microcontroller via its serial port interface (such as UART, USART, etc.). The microcontroller can transmit and receive data with the pulse detection module via a serial communication protocol (such as the UART protocol).

[0061] If the pulse detection module outputs an analog signal, the pulse signal can be input to the microcontroller through an analog input port (such as an ADC input port). The microcontroller can then obtain the pulse signal information by reading the ADC value.

[0062] If the pulse detection module outputs a digital signal (e.g., the pulse sensor outputs a digital signal through a digital interface), the pulse signal can be connected to the microcontroller via a digital input / output port (e.g., GPIO port); the microcontroller can then read the level state of the GPIO port to...

[0063] Obtain information about the pulse signal.

[0064] Reference Figure 8 The infrared obstacle avoidance module includes an infrared sensor and an infrared receiver. The infrared sensor emits infrared light, and when the light is reflected by an obstacle and received by the infrared receiver, the module can detect the presence of the obstacle and determine its distance and position. When detecting a patient's pulse, the module checks whether the hand is on the pulse detection module. When the hand is detected to be properly placed on the pulse detection module, the pulse detection module works normally.

[0065] To ensure correct connection, the pin definitions of the module and the microcontroller must be followed, and the pins of the infrared receiver must be correctly connected to the input pins of the microcontroller.

[0066] LED indicator lights are used to alert medical staff and patients. There are two LED indicator lights, one in the medical room and one in the ward (on the wall above the head of the bed). The LED indicator light in the medical room is connected to the main system and is equipped with a "Received" button. The LED indicator light in the ward is connected to the slave system and is equipped with a "Resolve" button.

[0067] Reference Figure 9 As shown in Figure 10, the power supply module supplies power to the microcontroller minimum system, which then distributes current to other modules and controls or receives data from them.

[0068] The LCD display module of the slave system displays information including the called bed number, call type, heart rate, and countdown; the countdown is set to 60 seconds to measure the patient's heart rate; for a normal call, you can press the "#" key directly, or press the "D" key first, and then press the "#" key; for an emergency call, press the "*" key first, and then press the "#" key; simultaneously, a single press of the "#" key represents a normal call, and a long press of the "#" key represents an emergency call.

[0069] The method of calling medical staff using the "#" key corresponds to general wards (bed numbers starting with A). For intensive care units (bed numbers starting with B), press the "#" key to call medical staff.

[0070] (For service personnel), it represents an emergency call (single tap and long press are the same).

[0071] The LCD display module of the host system displays the call bed number and call type, while the voice broadcast module broadcasts the call bed number and call type. The information sent for a normal call is: A-01 (example of bed number) or D (normal call), without "heart rate" or "countdown".

[0072] The slave system also has an automatic call mode. In this mode, the pulse detection module monitors the patient's arm pulse in real time. If the patient's pulse is abnormal, the slave system will automatically make an emergency call, sending the following information: A-01 (example of bed number), * (emergency call), X / min (heart rate), 60s (countdown). The host system's LCD display module will display the information synchronously, and the voice broadcast module will broadcast the information synchronously.

[0073] Working principle:

[0074] Referring to Figures 1 to 10, the operating modes of the wireless calling device are as follows:

[0075] Mode 1: When only one patient (a patient in a general ward) makes a regular call at the same time, the slave system sends the call information through the wireless signal transmitting and receiving module, the master system receives the call information and displays it on the LCD display module of the master system, and announces the patient's bed number through the voice broadcast module, thus triggering an alarm to remind the on-duty personnel. When the medical staff presses the "Received" button, the voice broadcast module stops broadcasting, indicating that the medical staff has received the call and proceeds to the corresponding general ward. If multiple patients make regular calls at the same time, they can be processed according to the order of their calls.

[0076] Mode Two: When a patient (in a general ward or intensive care unit) experiences an emergency and needs to call for medical staff, their bed number will be displayed on the screen, and the voice announcement module will simultaneously broadcast the patient's bed number to quickly attract the attention of medical staff; at the same time, the medical...

[0077] The LED indicator light in the ward will flash to remind medical staff to make a request. After receiving the request, the medical staff will press the "Received" button, and the LED indicator light in the ward will flash to let the patient know that the medical staff knows that the patient needs help. After treating the patient, the bed LED light will turn off by pressing the "Resolve" button in the ward, indicating that the problem has been resolved.

[0078] Mode 3: Automatic calling is enabled for critically ill patients (unconscious, unattended, or not allowed to be accompanied). The system uses an infrared obstacle avoidance tube to detect whether the patient's hand is on the heart rate sensor. If the patient's hand is not on the heart rate sensor, the slave system automatically makes a normal call to remind medical staff to check the patient's status. If the patient's hand is on the heart rate sensor, the system can monitor the patient's heart rate. When the heart rate is outside the normal range, the slave system automatically makes an emergency call to remind medical staff to check the patient urgently.

[0079] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A wireless calling device, characterized in that, include: The minimum system of a single-chip microcomputer consists of a single-chip microcomputer, a crystal oscillator circuit, a reset circuit, a download circuit, and a power supply circuit; The LCD display module is equipped with an OLED screen for displaying call information; The matrix keyboard module is configured as a 4×4 matrix keyboard for entering call information; The wireless signal transmitting and receiving module is configured as a ZigBee module for transmitting and receiving call signals; The voice broadcast module is configured as a TTS module and is used to broadcast call information. The pulse detection module is configured as a heart rate sensor to measure the electrical pulse signal in the patient's arm. The infrared obstacle avoidance module includes an infrared sensor and an infrared receiver, used to detect whether the patient's arm is on the pulse detection module; LED indicator lights are used to alert medical staff and patients; The power supply module provides power to the minimum system of the microcontroller. The main unit system consists of a power supply module, an LCD display module, a voice broadcast module, a wireless signal transmission and reception module, and LED indicator lights; The slave system consists of a power supply module, an LCD display module, a wireless signal transmission and reception module, a pulse detection module, an infrared obstacle avoidance module, a matrix keypad module, and LED indicator lights. The host system and slave system are networked through wireless signal transmission and reception modules, and perform wireless signal transmission and reception.

2. The wireless calling device according to claim 1, characterized in that: The microcontroller in the minimum microcontroller system is set to an STM32F103C8T6 microcontroller. The reset circuit corresponds to a hardware reset. The crystal oscillator circuit consists of a 1M resistor, two crystal oscillators (S_C1 and S_C3 capacitors), four non-polarized capacitors, and two crystal oscillators.

3. A wireless calling device according to claim 2, characterized in that: The four non-polarized capacitors are connected to OSCIN and OSCOUT respectively. Capacitors S_C2 and S_C4 are connected to pins PC14 and PC15 of the MCU respectively. The crystal oscillator is connected in series between the two capacitors. The 1M resistor is connected in series between capacitors S_C1 and S_C3 and in parallel with the capacitors.

4. A wireless calling device according to claim 1, characterized in that: The audio output interface of the TTS module is connected to the audio input interface of the microcontroller, and the TTS module outputs the converted voice data through the connected audio output interface. The microcontroller is connected to an external audio output device.

5. A wireless calling device according to claim 1, characterized in that: The information displayed on the LCD module of the slave system includes the called bed number, call type, heart rate, and countdown. The countdown is set to 60 seconds, and the call type includes normal call and emergency call.

6. A wireless calling device according to claim 1, characterized in that: The information displayed by the LCD display module of the host system is the call bed number and call type, and the information broadcast by the voice broadcast module is the call bed number and call type.

7. A wireless calling device according to claim 1, characterized in that: The slave system is also equipped with an automatic call mode. In the automatic call mode, the pulse detection module detects the patient's arm pulse in real time. If the patient's pulse is abnormal, the slave system makes an emergency call, and the LCD display module of the host system displays the result simultaneously, and the voice broadcast module broadcasts the result simultaneously.

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