CN111603254A - Bone joint tension balancer based on zigbee communication protocol - Google Patents

Abstract

The invention discloses a bone joint tension balancer based on a Zigbee communication protocol, which comprises a Zigbee wireless receiving circuit, an upper computer information management system, a bone joint balancer solid structure, a pressure sensor array, an analog/digital conversion circuit and a Zigbee wireless transmitting circuit, wherein the pressure sensor array, the analog/digital conversion circuit and the Zigbee wireless transmitting circuit are arranged on the bone joint balancer solid structure, each sensor of the middle flexible pressure sensor array is connected with the digital conversion circuit, the analog/digital conversion circuit is connected with the Zigbee wireless transmitting circuit, the Zigbee wireless transmitting circuit is communicated with the Zigbee wireless receiving circuit, and the Zigbee wireless receiving circuit is connected with the upper computer information management system. The invention realizes data informatization in the bone joint operation process.

Description

Bone joint tension balancer based on zigbee communication protocol

technical field

The invention belongs to the field of intelligent medical instruments, in particular to a bone joint tension balancer based on a zigbee communication protocol.

Background technique

With the continuous progress of modern medical care, many instruments are being updated. However, the balancer used in bone and joint surgery is still a relatively traditional mechanical component, which cannot complete real-time data collection, but in many cases, during the operation, doctors It is necessary to know the pressure changes in the bones and joints, so as to judge the state of the patient during the operation. Therefore, the balancer of the traditional pure mechanical mechanism can no longer meet the needs of doctors for bone and joint surgery.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a bone joint tension balancer based on the zigbee communication protocol.

The technical solution for realizing the purpose of the present invention is: a bone joint tension balancer based on Zigbee communication protocol, including Zigbee wireless receiving circuit, host computer information management system, bone joint balancer entity structure and a bone joint balancer entity structure. The pressure sensor array, analog/digital conversion circuit, and Zigbee wireless transmission circuit on the middle flexible pressure sensor array are connected with the digital conversion circuit, and the analog/digital conversion circuit is connected with the Zigbee wireless transmission circuit, and the Zigbee wireless transmission circuit The circuit communicates with the Zigbee wireless receiving circuit, and the Zigbee wireless receiving circuit is connected with the upper computer information management system.

Preferably, the medium pressure sensor array includes four flexible pressure sensors, and the four flexible pressure sensors are distributed on the bottom of the bone joint balancer physical structure and are on the same plane.

Preferably, each sensor is symmetrically distributed on the physical structure of the upper bone joint balancer.

Preferably, the Zigbee wireless transmitting circuit and Zigbee wireless receiving circuit both use CC2530 as the main control chip.

Preferably, the physical structure of the bone joint balancer is made of aluminum alloy.

Compared with the prior art, the present invention has the following significant advantages:

(1) The present invention adopts a flexible pressure sensor as a pressure-sensitive device, and its sensitivity is much higher than that of a traditional pressure sensor.

(2) The present invention adopts wireless transmission technology, which can be remotely received during data transmission, which can improve the operation flexibility of the doctor during the operation.

(3) The present invention adopts the zigbee communication protocol stack, which has the advantages of safety and reliability compared with the traditional transmission protocol, and supports the data collection of multiple devices at the same time.

(4) The data acquisition part of the present invention uses a dedicated data acquisition management software host computer, which can easily establish a patient information database and provide data basis for future disease analysis.

The present invention will be described in further detail below with reference to the accompanying drawings.

Description of drawings

FIG. 1 is a distribution diagram of the flexible sensor array of the present invention.

FIG. 2 is a physical mechanical structure diagram of the bone joint balancer of the present invention.

Fig. 3 is the working principle diagram of the system of the present invention.

FIG. 4 is a flow chart of the system program of the present invention.

Detailed ways

A bone joint tension balancer based on the Zigbee communication protocol, including a pressure sensor array 1 analog, digital conversion circuit 2, Zigbee wireless transmitting circuit 3, Zigbee wireless receiving circuit 4, host computer information management system 5 and the physical structure of the bone joint balancer 6. The two pins of each sensor of the medium flexible pressure sensor array 1 are respectively connected to the corresponding pads of the ADC conversion circuit 2, and the analog/digital conversion circuit 2 adopts the ADC converter inside the chip. The data input of Zigbee wireless transmitting circuit 3 comes from the digital signal converted by ADC. Zigbee wireless receiving circuit 4 is connected with the computer information management system 5 through a standard serial port. The acquisition and transmitting circuits of the whole circuit are installed in the physical structure of the bone joint balancer. 6 on.

In a further embodiment, the pressure sensor array 1 is composed of four flexible pressure sensors distributed on the bottom of the bone joint balancer physical structure 6 respectively, which are on the same plane, and each sensor is symmetrically distributed on the top.

In a further embodiment, the analog/digital conversion circuit 2 converts the resistance change caused by the pressure into a voltage change by means of resistance division, and then the voltage signal is input to the internal ADC pin of the main control chip.

In a further embodiment, the Zigbee wireless transmitting circuit 3 uses CC2530 as the main control chip, the chip has a Zigbee wireless transmitting module, the transmitting antenna adopts an on-board PCB antenna, and there is a radio frequency power amplifier chip between the antenna and the signal. .

In a further embodiment, the Zigbee wireless receiving circuit 4 adopts the CC2530 main control chip, the receiving antenna of the circuit adopts a high-gain rod antenna, and the receiving antenna is directly connected to the radio frequency signal pin of the main control chip.

In a further embodiment, the host computer information management system 5 is developed using the QT development platform, and the information management system can realize the functions of data reading, saving, real-time dynamic curve display and information viewing.

In a further embodiment, the physical structure 6 of the bone joint balancer is made of aluminum alloy material, and the structure is the same size as the traditional bone joint balancer, the difference is that the upper part of the bone joint balancer of the present invention is provided with a handle. .

As shown in Figure 3, the flexible pressure sensor array 1 will convert the pressure signal into a voltage signal, and the voltage signal will be converted into a digital signal by the ADC conversion circuit 2, and the digital signal will be sent to the Zigbee wireless transmitter circuit 3 inside the CC2530 chip for transmission. , the signal will be received by the Zigbee wireless receiving circuit 4 . The received data will be sent to the computer information management software 5 by means of a serial port protocol. The management system can distinguish the number of the equipment by the physical address of the data header information, so that the equipment data recording of multiple patients can be realized. The ADC conversion circuit 2 adopts the method of resistance division to realize the conversion of resistance change into voltage change. The ADC chip of this conversion circuit adopts the 12 analog-to-digital converter built in CC2530, which can realize real-time 30kHz to 40kHz. convert. Zigbee wireless transmitting circuit 3 includes important parts such as onboard 2.4GPCB transmitting antenna, RF power amplifier, voltage regulator chip and power supply circuit, among which the RF power amplifier amplifies the transmitted signal, which increases the transmission distance of wireless communication to 1 km The left and right viewing distances increase the power consumption of the system, but greatly improve the transmission stability of the system. Zigbee wireless receiving circuit 4 is basically the same as Zigbee wireless transmitting circuit, the only difference is that the transmitting end has a radio frequency power chip, while the receiving end does not have this chip, but uses a high-gain rod antenna to receive signal waves, so Conducive to the simplification of the receiving circuit. The communication mode between Zigbee wireless receiving circuit 4 and the computer is standard serial port protocol communication, the communication baud rate is 115200, the circuit uses CH340 chip, the purpose of this chip is to convert the serial port protocol to modern personal computer support USB signal. The computer host computer information management software 5 processes the data after receiving the signal, parses the data content after processing, and saves the necessary information into the corresponding patient information account. The management system supports the establishment of patient information, data recording, data storage and data query. At the same time, the system supports the dynamic display of the real-time pressure curve, which enables the visualization of the data.

The data is sent by means of a timer. When the time is up, the value of the pressure converted to voltage is read first, and then the main control chip sends the read voltage value. One data transmission ends, and then the next data transmission is continued. time to come. Once the receiving data end receives the data, it triggers the receive interrupt function, which sends the received data to the computer in the form of a serial port, as shown in Figure 4. The computer host computer information management system will analyze the data, and then do the corresponding record and display work.

Claims (5)

1. The bone joint tension balancer based on the Zigbee communication protocol is characterized by comprising a Zigbee wireless receiving circuit (4), an upper computer information management system (5), a bone joint balancer entity structure (6), a pressure sensor array (1), an analog/digital conversion circuit (2) and a Zigbee wireless transmitting circuit (3), wherein the pressure sensor array (1), the analog/digital conversion circuit (2) and the Zigbee wireless transmitting circuit (3) are arranged on the bone joint balancer entity structure (6), each sensor of the middle flexible pressure sensor array (1) is connected with the digital conversion circuit (2), the analog/digital conversion circuit (2) is connected with the Zigbee wireless transmitting circuit (3), the Zigbee wireless transmitting circuit (3) is communicated with the Zigbee wireless receiving circuit (4), and the Zigbee wireless receiving circuit (4) is connected with the upper computer information management system (5).

2. A bone joint tension balancer based on Zigbee communication protocol as claimed in claim 1, wherein the middle pressure sensor array (1) comprises four flexible pressure sensors, and the four flexible pressure sensors are distributed at the bottom of the bone joint balancer solid structure (6) and are in the same plane.

3. A bone joint tension balancer based on Zigbee communication protocol as claimed in claim 1, characterized in that each sensor is distributed symmetrically on the upper bone joint balancer entity structure (6).

4. The bone joint tension balancer of claim 1, wherein the Zigbee wireless transmitting circuit (3) and the Zigbee wireless receiving circuit (4) both use CC2530 as a main control chip.

5. A bone joint tension balancer as claimed in claim 1, wherein the bone joint balancer solid structure (6) is made of aluminum alloy.

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