CN204761462U - Patient's integrated information gateway device - Google Patents

Abstract

The utility model discloses a patient's integrated information gateway device. The utility model discloses zigbee equipment to current improves, use coordinately the zigbee coordinator radio frequency module in the current zigbee equipment with the STM32 treater, through the STM32 treater realize with being connected of ethernet chip, the network deployment ability of equipment has been improved, connect on the STM32 treater simultaneously and show and the subassembly of button module as field control, messenger's equipment site management of being convenient for, and a structure of the present invention is simple, the consumption is little, and the equipment of this kind of no line detection is also accepted by the disease easily. The utility model discloses simple structure, low cost, excellent in use effect.

Description

Patient's integrated information gateway device

Technical field

The utility model relates to a kind of electronic equipment, specifically a kind of patient's integrated information gateway device.

Background technology

As an important component part of therapeutic treatment, medical monitoring system more and more comes into one's own in Modern medical therapy field.Present hospitals uses fixing custodial care facility to carry out real-time monitoring to patient mostly, and transducer is connected between patient and equipment and carries out signals collecting, complicated equipment and too much connection line, make outpatients mental state pressure excessive and nervous, and then affect patient, thus cause diagnostic result and truth to depart from, have impact on the correct Clinics and Practices to the state of an illness.Carry out medical monitoring in order to carry out exactly patient better, hommization, people start to pay close attention to wireless medical monitoring technology more and more.

For medical monitoring system real-time, continuously, monitor the demand of patient important vital signs parameter for a long time.Wireless medical monitoring system domestic at present adopts GSM (wireless network), GPRS and Bluetooth technology to realize mostly.These systems often also exist that power consumption is large, cost is high, networking capability is poor, cross high deficiency to human body electromagnetic radiation.Along with the progress of science and technology, the structure of equipment and the more sophisticated of production procedure, the application of electronic technology gets more and more, and traditional medical monitoring system progressively shows its limitation and lag.

Summary of the invention

The purpose of this utility model is: provide a kind of patient's integrated information gateway device, it is low in energy consumption, and structure is simple, and good stability, is convenient to field control, to overcome the deficiencies in the prior art.

The utility model is achieved in that patient's integrated information gateway device, comprises STM32 processor, STM32 processor is connected with power module, data acquisition module, display and key-press module and network transmission module; Data acquisition module is connected with sensor node, network transmission module is connected with supervisory control comuter.

Described data acquisition module is ZigBee telegon, and sensor node is ZigBee wireless sensor node.

Owing to have employed technique scheme, compared with prior art, the utility model improves existing zigbee equipment, zigbee telegon radio-frequency module in existing zigbee equipment is combined with STM32 processor, the connection with Ethernet chip is realized by STM32 processor, improve the networking capability of equipment, on STM32 processor, connect display and the key-press module assembly as field control simultaneously, equipment is made to be convenient to field management, and structure is simple, power consumption is little, and the equipment of this radio detection is also easily accepted by sufferer.The utility model structure is simple, and with low cost, result of use is good.

Accompanying drawing explanation

Accompanying drawing 1 is structural representation of the present utility model;

Accompanying drawing 2 is the circuit diagram of the power module of embodiment;

Accompanying drawing 3 is the circuit diagram of the STM32 processor of embodiment;

Accompanying drawing 4 is the circuit diagram of the data acquisition module of embodiment;

Accompanying drawing 5 is the circuit diagram of the display module of embodiment;

Accompanying drawing 6 is the circuit diagram of the network transmission module of embodiment;

Accompanying drawing 7, accompanying drawing 8 are respectively the schematic diagram of KEY and LED in embodiment.

Embodiment

Embodiment of the present utility model: the structure of patient's integrated information gateway device as shown in Figure 1, comprises STM32 processor 1, STM32 processor 1 is connected with power module 2, data acquisition module 3, display and key-press module 4 and network transmission module 5; Data acquisition module 3 is connected with sensor node 6, network transmission module 5 is connected with supervisory control comuter 7; Described data acquisition module 3 is ZigBee telegon, and sensor node 6 is ZigBee wireless sensor node.

In the present embodiment, data acquisition module 3 is zigbee telegon radio-frequency module, its CC2530 adopting TI company to produce, the model that Ethernet chip adopts is ENC28J60, CC2530 chip not only has the 2.4GHz less radio-frequency front end meeting IEEE802.15.4 specification, it is the 8051MCU of 8 at Embedded also, be also integrated with 8 tunnels inputs and the dormancy of configurable 12 ADC, 4 timers, AES-128 coprocessor, WatchDog Timer, 32KHz crystal oscillator time device, electrification reset/power-fail detection circuit and 21 programmable I/O pins.CC2530 chip adopts 0.18 μm of CMOS technology; Under reception and emission mode, current loss is respectively lower than 27mA and 25mA.The park mode of CC2530 and be transformed into the characteristic of ultra-short Time of aggressive mode, is particularly suitable for the application that those require battery life to grow very much.

For building a complete ZigBee telegon, peripheral circuit needs 32MHz crystal oscillator XTAL1 to provide clock source for internal microprocessor, and radio frequency part needs high-precision inductance (L321, L331, L341), electric capacity (C341) and PCB microwave transmission line to mate the impedance of RF input and output.Wherein the serial ports pin (P0_2 with P0_3) of CC2530 is connected with UART serial ports (PA_2 with the PA_3) pin of STM32.

1, crystal oscillator design: CC2530 need of work two clock crystal oscillators, first is 32MHz, for wireless receiving and dispatching provides clock; Second is 32.068KHz, for sleep pattern provides clock.C191 and C211 is the load capacitance of 32MHz crystal oscillator, capacitance depends on the size of load capacitance, CL=I/ (1/C191+1/C211)+Cf, and wherein CL representative value is 16pF, C puppet 2 ~ 5pF, ensures the accurate and stable of the generation frequency of crystal oscillator.So the representative value of C19l and C211 is 27pF.

2, biasing resistor design: R261 is the precision resistance of current reference generator.Its value is 43K ohm.

3, balun: be made up of electric capacity C341 and inductance L 341, L33l, L321 and PCB microwave transmission line, total meets the requirement of RF I/O impedance matching (50Q).

4, the decoupling of power supply: as decoupling capacitor C421 is used for power filter, to improve the stability of chip operation.

Data transmission module due to sensor node 6 is operated in the microwave section of 2.4GHz, and operating frequency is very high, so be designed with very high requirement to it.Because data acquisition module 3 cisco unity malfunction all may be caused in a lot of situation, wherein system rejection to disturbance performance is the important indicator of reliability is the key ensureing that telegon normally works: effective interference methods, particularly important to the reliability of the normal work of the radio circuit of data acquisition module 3, telegon data communication, therefore, how to prevent and to suppress electromagnetic interference, improve Electro Magnetic Compatibility, just become a very important technology contents of the Hardware Design.Following interference protection measure is mainly taken in the design:

1, decoupling capacitor is set

Power line has to pass through decoupling capacitor, then to IC power pins; The cabling of coupling capacitance distance power supply is wanted nearly IC chip GND, VCC as far as possible, is gone to the loop of asking of lotus root electric capacity will adopt distance minimum principle; From the viewpoint of processing, it is better that decoupling capacitor is placed on the IC back side; The pin of decoupling capacitor is short as far as possible.Reason is as follows:

For radio circuit design, element pasted on surface should be adopted as far as possible, or the pin of pin element is shortened.Because the effect of element pasted on surface is better than radial pin element and axial parallel pin element.Compared with the element having pin, the parasitic effects of element pasted on surface is smaller.When high frequency, pin element can form the small inductor of about InH/mm pin.Pin end also produces the effect of about 4pF small capacitances.Therefore the length of pin should be short as far as possible.

2, grounding connection

Ground connection is the important measures that EMC (EleetroMagneticCompatibility, Electro Magnetic Compatibility) designs.The main cause that ground wire easily forms electromagnetic interference is that ground wire exists impedance, when electric current flows through ground wire, can produce voltage on ground wire, thus produce ground wire loop current, forms the loop interference of ground wire.When multiple circuit shares one section of ground wire, common impedance coupling can be formed, thus produce " ground wire noise ".Therefore, circuit has carried out when design of Grounding Connections processing altogether in analog, digitally, radio frequency.Different according to signal properties when circuit design, power supply divides analog circuit, digital circuit, radio circuit three tunnel powers, and three kinds of circuit gather behind ground altogether respectively and connect power supply ground.Because each circuit only exists a reference point, eliminate common impedance coupling, thus effectively reduce analog circuit, mutual interference between digital circuit and radio circuit.

That power module adopts is low-power dissipation power supply chip LP2985, and this chip is generally used for battery powered occasion (as portable digital camera), can ensure the output current of 150mA, extremely low drain voltage, and output voltage precision is 0.01V.Input voltage range is 4-10V, output voltage range 2.5-5V.LP2985-3.3V voltage stabilizing chip is selected in practical application.

Simplify for embedded design application, the feature of low-power consumption, the utility model adopts STMicw Electronics to produce the primary processor of STM32 series processors STM32F103RBT6 as embedded ethernet gateway of high performance ARMCortex-M3 kernel.Its dominant frequency can reach 72MHz, interior high-speed memory (up to the flash memory of 128K byte and the SRAM of 20K byte), abundant enhancing I/O port and the peripheral hardware being connected to two APB buses, comprise the ADC of 2 12,3 general 16 bit timing devices and a PWM timer, also comprise standard and advanced communication interface: nearly 2 I2C and SPI, 3 USART, a USB and CAN.These abundant peripheral configuration can meet the design's needs.

Ethernet chip adopts the independent ethernet controller ENC28J60 of Microchip company of the U.S., and its adopts speed up to the SPI interface of 10Mb/s as communication port, and convenience is connected with STM32 processor, significantly reduces the complexity of PCB layout.ENC28J60 inside is integrated with MAC layer and the phy controller of compatible IEEE802.3 rule, and its packet filtering function able to programme and high-speed SRAM buffer can receive efficiently, store, transceiving data bag, alleviate process and the Memory Load of STM32 processor.

In order to form STM32 processor minimum system, need the crystal oscillator XTAL1 of external 8MHz, inner PLL frequency multiplication can produce the dominant frequency of 72MHz, needs the decoupling circuit of coilloading and electric capacity composition between digital power and analog power pin.Because STM32 and ENC28J60 is 3.3V voltage reference, so do not need level shifting circuit just the spi bus function of STM32 can be opened.STM32 processor is set to host mode to be directly connected with the SPI interface of ENC28J60.The enable pin CS of ENC28J60, it is all Low level effective that interrupt output pin INT and interruption wake output pin WOL up, needs the resistance of pull-up 10k to be connected with processor GPIO pin.PA2, PA3 pin of STM32 is that USART serial ports is connected with the serial ports pin of CC2530.

The physical layer of the built-in 10Mbit/s of ENC28J60, its differential pulse input and output pin needs external network transformer.The present embodiment has selected the ethernet network isolating transformer H1102NL meeting 10/100BASE-T standard, it has the features such as electrical isolation, signal coupling, impedance matching, suppression interference, can system rejection to disturbance be improved, transformer need the resistance of 4 extra 51 Ω (precision is 1%) and the electric capacity of two 0.01uF and the Puled input of ENC28J60 and output pin TPIN ±, TPOUT ± be connected.The analog circuit of ENC28J60 inside needs the biasing resistor of a cross-over connection 2k between RBIAS pin and ground.

In order to realize human-computer interaction function better, adding the FSMC interface of STM32 in the design to drive LCD screen, using touch screen controller to detect contact coordinate.Realize liquid crystal display screen dynamically shows in real time to the situation of networking, and touch input control networking.

There is the control interface of integrated special liquid crystal display screen and touch-screen STM32F103RBT6 inside, and in display floater, carry the drive circuit of driving chip, STM32 chip controls liquid crystal display screen and touch-screen by driving chip.The design uses ILI9341 chip controls liquid crystal display screen, by TSC2046 chip controls touch-screen.

ILI9341 liquid-crystal controller uses 8080 interfaces and MCU to carry out communication, by 5 basic control signal wires, with the CSX holding wire of sheet choosing; For writing enable WRX holding wire; For reading enable RDX holding wire; For distinguishing the D/CX holding wire of data and order; And the RESX holding wire for resetting.Write order sequential is by CSX holding wire drags down, what D/CX holding wire also set low that level represents write is that command address (can be regarded as command code, as software reset: 0x01), be low with WRX holding wire, RDX signal is highly represent that data transfer direction is for write, simultaneously, in data wire [17:0] output command address, the parameter for order that two transmit stages transmit on ground, so D/CX will set high level, what represent write is order data.When we need to write data to GRAM time, after CSX holding wire is dragged down, D/CX holding wire is set to high level, the data at this moment transmitted by D [17:0] then can be saved in its GRAM by ILI9341.

Further, the conveniently debugging of software, the present embodiment have employed 3 LED and carrys out instruction program running status, by pressing the pattern of key assignments ZigBee networking.That PE5 and PE6 connects respectively is KEY1 and KEY2, and low level detects effectively.PC3, PC4, PC5 meet LED1, LED2, LED3 respectively, when I/O port is bright to LED during low level.

The connected mode of above-mentioned parts is the customary means of those skilled in the art, just repeats no more here.

Claims (2)

1. patient's integrated information gateway device, comprises STM32 processor (1), it is characterized in that: on STM32 processor (1), be connected with power module (2), data acquisition module (3), display and key-press module (4) and network transmission module (5); Data acquisition module (3) is connected with sensor node (6), network transmission module (5) is connected with supervisory control comuter (7).

2. patient's integrated information gateway device according to claim 1, it is characterized in that: described data acquisition module (3) is ZigBee telegon, sensor node (6) is ZigBee wireless sensor node.