CN111653353A - Waste information acquisition system and device with two-dimensional code identification function - Google Patents
Waste information acquisition system and device with two-dimensional code identification function Download PDFInfo
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- G06K17/0022—Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations arrangements or provisions for transferring data to distant stations, e.g. from a sensing device
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Abstract
The invention discloses a waste information acquisition system with a two-dimension code identification function and a device thereof, comprising a main control module, a communication module, a weight information acquisition module, a two-dimension code label scanning module, a two-dimension code label output module and a power supply module which are all integrated on a mainboard, wherein the main control module is used for receiving the weight information of the weight information acquisition module; the two-dimensional code is also used for receiving the two-dimensional code for identifying the identity and sending the two-dimensional code to the server for identity authorization and authentication; the system is also used for sending a two-dimension code printing instruction to the server and receiving a two-dimension code label generated by the server after the identity authorization authentication is passed; the invention not only ensures that the identity of medical waste handover staff has the authority of collection and handover, but also ensures that the responsible person can be conveniently traced when the medical waste circulation process has problems, and simultaneously integrates two-dimension code scanning and two-dimension code generation into a whole, does not need to introduce additional printer generation and printing equipment, and reduces the volume of the whole acquisition device.
Description
Technical Field
The invention relates to the field of medical waste management, in particular to a waste information acquisition system and device with a two-dimensional code identification function.
Background
The main functions of data acquisition of medical wastes (hereinafter referred to as medical wastes) are to perform comprehensive information registration on medical wastes and to perform identification of medical waste data through medical waste tags. The existing medical waste data are generally collected manually, gooseneck type packaging is carried out on medical waste bags, weight data are obtained by using a hook type spring scale, then medical waste types are identified manually, medical waste related data are manually written on a medical waste label after the medical waste related data are completed, and data recording is carried out by manually writing a medical waste circulation list in the medical waste handover and warehousing stage.
The main process nodes for collecting the medical wastes in the prior art are as follows: the useless packing of doctor, the useless handing-over of doctor, the useless warehouse entry of doctor and the useless warehouse exit of doctor, the whole in-process that the doctor circulates useless mostly relies on manual operation, carries out the useless weighing of doctor through couple spring balance and can lead to personnel's work load to increase, and the data deviation of weighing of couple spring balance is great simultaneously, causes following unfavorable consequence easily: the medical waste loss is often caused when the deviation of the weighing data is large, but the situation can not be found, for example, the weight of a handover node is inconsistent with that of a warehousing node twice in the internal circulation process, so that once the medical waste loss occurs, cross infection in a hospital can be caused, and the data can be deviated due to the inconsistent data of the front node and the back node, the source data during tracing can be verified, finally, the internal management data of the hospital is inconsistent, and the internal general affairs of the hospital and the management data dislocation of an infectious department are disturbed.
In conclusion, the existing medical waste management mode limits the quality of medical waste management in a hospital, a large amount of manual operation is invested, the error rate is easily increased in the process, the error rate of medical waste management is high, and the labor cost of the hospital is increased.
Disclosure of Invention
In view of the problems in the prior art, the present invention provides a waste information collecting system and device with two-dimension code identification function, including: a main control module, a communication module, a weight information acquisition module, a two-dimension code label scanning module, a two-dimension code label output module and a power supply module which are arranged on the main board,
the communication module is connected with the main control module and is used for realizing data transmission between the acquisition terminal and the medical waste management platform server and between the acquisition terminal and the mobile phone terminal;
the weight information acquisition module is connected with the main control module and is used for acquiring the collected medical waste total weight information in real time;
the two-dimension code label scanning module is connected with the main control module through a two-dimension code information transmission circuit and is used for scanning two-dimension code labels of medical waste packaging bag identification, information acquisition place identification and medical waste handover party identification and transmitting the two-dimension code labels to the main control module;
the two-dimension code label output module is connected with the main control module through a two-dimension code information transmission circuit and is used for receiving and printing out the unique two-dimension code information generated by the main control module;
the main control module is used for receiving the weight information of the weight information acquisition module, measuring the weight of the medical waste packaged in a single bag according to the received total weight information of the medical waste and sending the measured weight to the server; the two-dimensional code is also used for receiving the two-dimensional code for identifying the identity and sending the two-dimensional code to the server for identity authorization and authentication; the system is also used for sending a two-dimension code printing instruction to the server and receiving a two-dimension code label generated by the server after the identity authorization authentication is passed;
the power supply module is connected with the main control module and used for providing a working power supply.
As a further optimization of the above scheme, the main control module includes a microprocessor chip LPC2134, the two-dimensional code label scanning module includes a scanner interface J7, the two-dimensional code label output module includes a printer interface J4, and the two-dimensional code information transmission circuit includes a level conversion unit and a serial port expansion unit.
As a further optimization of the above scheme, the level conversion unit includes a level conversion chip SP3232EEN, capacitors C3, C19, C7 and C22, a pin 16 of the SP3232EEN chip is connected to a fourth working power supply, a pin 2 is connected to a capacitor C3 and then connected to the fourth working power supply, a pin 6 is connected to a capacitor C19 and then grounded, a pin 15 is grounded, a capacitor C22 is connected between pins 4 and 5, a capacitor C7 is connected between pins 1 and 3, pins 7 and 8 are connected to a scanner interface J7, pins 14 and 13 are connected to a printer interface J4, pins 11 and 12 are connected to a first sub-serial port developed by the serial port development circuit, and pins 10 and 9 are connected to a second sub-serial port developed by the serial port development circuit;
the serial port expanding circuit comprises a WK2114 chip and a crystal oscillator circuit,
the crystal oscillator circuit comprises capacitors C47 and C48, a crystal oscillator Y2 and a resistor R31, wherein the capacitors C47 and C48 are connected in series and then connected in parallel with the crystal oscillator Y2, and simultaneously connected in parallel with the resistor R31, two ends of the resistor R31 are respectively connected with a pin 19 and a pin 20 of a WK2114 chip, the capacitors C47 and C48 are grounded, and the frequency of the crystal oscillator Y2 is 11.0592 MHZ;
a pin 19 and a pin 20 of the WK2114 chip are respectively connected with the output end and the input end of the crystal oscillator circuit; the pin 10 and the pin 8 are correspondingly connected with pins 15 and 16 of an LPC2134 chip; pins 15 and 14 of the WK2114 chip are first sub-serial ports, pins 12 and 11 are second sub-serial ports, pins 17 and 16 are third sub-serial ports connected with a Bluetooth communication unit, pins 6 and 7 are fourth sub-serial ports connected with a liquid crystal display interface J6, and pin 3 and pin 5 of the WK2114 chip are connected with pins 33 and 34 of an LPC2134 chip.
As a further optimization of the above solution, the communication module comprises an NB-IOT communication unit and a bluetooth communication unit,
the NB-IOT communication unit comprises an NB-IOT chip, a radio frequency antenna circuit, a data receiving circuit and a data sending circuit, wherein the radio frequency antenna circuit, the data receiving circuit and the data sending circuit are connected with the NB-IOT chip, the radio frequency antenna circuit is used for transmitting and receiving electromagnetic wave signals between the NB-IOT chip and the medical waste management platform server, the data receiving circuit is connected with the main control module and is used for receiving data sent by the main control module, and the data sending circuit is connected with the main control module and is used for sending data to the main control module;
the NB-IOT chip adopts a BC28 chip, the radio frequency antenna circuit comprises capacitors C40 and C41, a resistor R18 and a radio frequency antenna interface A1, a pin 35 of the BC28 chip is respectively connected with one end of the radio frequency antenna interface A1 through a resistor R18, two ends of the resistor R18 are respectively connected with one ends of the capacitors C40 and C41, and the other ends of the capacitors C40 and C41 and the radio frequency antenna interface A1 are grounded;
the data sending circuit comprises a triode T2, a resistor R17, a capacitor C39 and a pull-up resistor R22, wherein one end of the resistor R17 and the capacitor C39 which are connected in parallel is connected with a pin 24 of an LPC2134 chip, the other end of the resistor R17 and the capacitor C39 are connected with the base electrode of a triode T2, the emitter electrode of the triode T2 is connected with a pin 18 of the BC28 chip, the collector electrode of the triode T2 is connected with a pin 21 of the LPC2134 chip, and the collector electrode of the triode T is connected with a fourth working;
the data receiving circuit comprises a diode D3 and a resistor R9, wherein the anode of the diode D3 is connected with a pin 17 of the BC28 chip, the cathode of the diode D3 is connected with a pin 19 of the LPC2134 chip, a resistor R9 is connected between the diode D3 and the pin 17 of the BC28 chip, and the other end of the resistor R9 is connected with a pin 24 of the LPC2134 chip.
As a further optimization of the above scheme, the bluetooth communication unit includes ZLG52810P0-1C-TC bluetooth communication chip, resistors R13, R14 and a light emitting diode L1, wherein a pin 20 of the ZLG52810P0-1C-TC chip is connected to a pin 13 of an LPC2134 chip, the pin 20 is connected to a fourth working power supply through a pull-up resistor R13, a pin 14 of the ZLG52810P0-1C-TC chip is connected to the fourth working power supply after being sequentially connected to the light emitting diodes L1 and R14, pins 8 and 9 are connected to the fourth working power supply, pins 10 and 11 are connected to an SGND, and pin 6 and pin 7 are respectively connected to a third sub-serial port of the WK2114 chip.
As a further optimization of the above scheme, the weight information acquisition module includes a weight sensor interface J3, a filter circuit and an ADS1230 analog-to-digital conversion chip, the filter circuit includes a capacitor C4, a capacitor C9, a first pi filter and a second pi filter, one end of the capacitor C4 is connected to the pin 3 of the weight sensor interface J3 and the input end of the first pi filter circuit, the other end of the capacitor C4 is connected to the pin 2 of the interface J3 and the input end of the second pi filter, one end of the capacitor C9 is connected to the output end of the first pi filter circuit and the pin 7 of the ADS1230 chip, and the other end of the capacitor C9 is connected to the output end of the second pi filter and the pin 8 of the ADS1230 chip.
As a further optimization of the above scheme, the system further comprises a real-time clock circuit module connected with the main control module, which is used for recording the real-time for scanning the two-dimensional code and providing the time information required for participating in the generation of the two-dimensional code, and comprises a PCF8563T chip, a crystal oscillator T1, a diode D2, a direct-current power supply B2, a resistor R5 and a resistor R6, wherein,
a crystal oscillator T1 is connected between pins 1 and 2 of the PCF8563T chip;
a pin 8 of the PCF8563T chip is respectively connected with one end of a diode D2 and the anode of a direct current power supply B2, the other end of the diode D2 is connected with a fourth working power supply, and the cathode of the direct current power supply B2 is grounded;
As a further optimization of the scheme, the keyboard comprises a key management circuit module connected with the main control module, wherein the key management circuit module comprises a chip ZLG72128 and a matrix keyboard circuit,
the matrix keyboard circuit is2 rows and 8 columns, and 10 ports of the matrix keyboard circuit are respectively connected to pins 11 to 20 of a chip ZLG72128 through resistors;
the pin 6 of the ZLG72128 chip is respectively connected with the pin 46 of the LPC2134 chip and one end of the resistor R15, and the other end of the resistor R15 is connected with a fourth working power supply; pin 4 of ZLG72128 chip is connected to the fourth working power supply, capacitor C15 is connected between pin 2 and pin 3, pin 1 is connected to pin 45 of LPC2134 chip and one end of resistor R16, and the other end of resistor R16 is connected to the fourth working power supply; pins 7 and 8 connect the I2C serial bus of the LPC2134 chip.
As a further optimization of the above scheme, the power module includes an external dc power input interface J10, a power switch interface J11, a built-in lithium battery interface J9, a first step-down dc voltage source circuit, a second step-down dc voltage source circuit, and a forward low-voltage drop regulator P2, one end of the power switch interface J11 is respectively connected to an interface J9 and an interface J10 to realize switching between an external power supply and a built-in lithium battery, the other end of the interface J11 is respectively connected to input ends of the first step-down dc voltage source circuit and the second step-down dc voltage source circuit, an output end of the first step-down dc voltage source circuit outputs a second working power, the second step-down dc voltage source circuit is used for outputting a third working power to supply the NB-IOT communication unit, and an output end of the first step-down dc voltage source circuit is connected to an input end of the forward low-voltage drop, the low dropout regulator P2 employs AMS1117-3.3 for outputting a fourth operating power.
The first step-down direct-current voltage source circuit and the second step-down direct-current voltage source circuit adopt a step-down direct-current power converter chip XL1583, in the step-down direct-current voltage source circuit, a pin 2 of the XL1583 chip is connected with a first capacitor and a first electrolytic capacitor which are connected in parallel and then grounded, a third resistor is connected between the pin 2 and a pin 7, a pin 5 of the XL1583 chip is respectively connected with one end of the first resistor, one end of the second resistor and one end of the second capacitor, the other end of the second resistor is grounded, the other end of the second capacitor is connected with the other end of the first resistor, the other end of the first resistor is connected with one end of the second electrolytic capacitor, the other end of the second electrolytic capacitor is grounded, a pin 3 of the XL1583 chip is respectively connected with one end of a first inductor and one end of a first Schottky diode, the other end of the first inductor is respectively connected with a second electrolytic capacitor, one end of the fourth capacitor, one end of the fifth capacitor, and the other end of the third capacitor, the fourth capacitor and the other end of the fifth capacitor are grounded.
The first resistance in the first step-down direct-current voltage source circuit is 5.23k ohms, the second resistance is 2.2k ohms, the first resistance in the first step-down direct-current voltage source circuit is 6.2k ohms, and the second resistance is 2k ohms.
The invention also provides a medical waste information acquisition system with the two-dimensional code identification function, which comprises the medical waste information acquisition device with the two-dimensional code identification function;
the medical waste management platform server is used for receiving and storing all data acquired by the acquisition system; the system comprises a receiving party identity two-dimension code receiving module, a permission management module and a permission management module, wherein the receiving party identity two-dimension code receiving module is used for receiving a receiving party identity two-dimension code; the two-dimensional code generating and encrypting system is used for receiving a two-dimensional code printing instruction, and generating a unique two-dimensional code label of each bag of medical wastes by a two-dimensional code generating and encrypting algorithm according to weight data of each bag of medical wastes, identity information of a collector and a deliverer, collecting time, a department and medical waste types.
The waste information acquisition system and device with the two-dimensional code identification function have the following beneficial effects:
1. the medical waste information acquisition device with the two-dimension code identification function integrates the two-dimension code scanning and the two-dimension code generation, not only improves the integration level of the medical waste information acquisition device, but also transmits the scanned two-dimension code data to the LPC2134 chip of the main control module for processing and identification through the two-dimension code scanner interface through the level conversion unit and the serial port expansion unit, does not need to introduce an additional control chip to process the scanned two-dimension code data, thereby reducing the power consumption, being beneficial to improving the stability of the whole device, transmits the newly generated two-dimension code transmitted by the LPC2134 chip of the main control module to the printer interface through the serial port expansion unit and the level conversion unit, does not need to introduce additional printer generation and printing equipment, and reduces the volume size of the whole acquisition device.
2. According to the medical waste information acquisition device with the two-dimension code identification function, through data communication of the two-dimension code scanning module, the main control module and the NB-IOT communication unit, through combination of the two-dimension code scanning identification unit, the main control unit and the NB-IOT communication unit, identity information of workers at both sides of a handover worker in a medical waste collection handover process can be scanned and identified and uploaded to a medical waste management platform server for identity authority authentication, so that the identity of the medical waste handover worker is guaranteed to have collection and handover authorities, convenience in tracing a responsible person in the medical waste circulation process is guaranteed, meanwhile, the two-dimension code scanning identification unit realizes scanning of the two-dimension code information on a waste outer packaging bag, and packaged wastes are collected, warehoused and stored in the whole, And (5) real-time supervision of ex-warehouse and other flow transfer processes.
Drawings
Fig. 1 is a block diagram of an overall circuit structure of a medical waste information collecting device with a two-dimensional code identification function according to the present invention;
FIG. 2 is a schematic circuit diagram of an LPC2134 chip, a download enabling interface JP2, a JTAG debug interface, a download interface J2 and a system clock circuit of a main control module of the medical waste information acquisition device with a two-dimensional code identification function according to the present invention;
FIG. 3 is a schematic circuit diagram of a watchdog timing circuit of the medical waste information collecting device with the two-dimension code identification function according to the present invention;
fig. 4 IS a schematic circuit diagram of a memory card chip IS25LQ016B of the medical waste information acquisition device with two-dimension code identification function according to the invention;
FIG. 5 is a schematic circuit diagram of an NB-IOT communication unit of the medical waste information collection device with two-dimension code identification function according to the present invention;
FIG. 6 is a schematic circuit diagram of a Bluetooth communication unit of the medical waste information collecting device with two-dimension code identification function according to the present invention;
fig. 7 is a schematic circuit diagram of a weight information collecting module of the medical waste information collecting device with a two-dimensional code identification function according to the present invention;
fig. 8 is a schematic circuit diagram of an external dc power input interface J10, a power switch interface J11, and a built-in lithium battery interface J9 of the medical waste information collection device with a two-dimensional code identification function according to the present invention;
fig. 9 is a schematic circuit diagram of a first step-down dc voltage source circuit of the medical waste information collecting device with two-dimensional code identification function according to the present invention;
FIG. 10 is a schematic circuit diagram of a second step-down DC voltage source circuit of the medical waste information collecting device with two-dimension code identification function according to the present invention;
fig. 11 is a schematic circuit diagram of a forward low-voltage drop regulator P2 of the medical waste information collecting device with a two-dimensional code identification function according to the present invention;
FIG. 12 is a schematic circuit diagram of a battery capacity detection circuit of the medical waste information collecting device with a two-dimensional code identification function according to the present invention;
fig. 13 is a schematic circuit diagram of ZLG72128 chip in the key management circuit module of the medical waste information collection device with two-dimension code identification function according to the present invention;
FIG. 14 is a schematic circuit diagram of a matrix keyboard circuit in a key management circuit module of the medical waste information collecting device with two-dimension code identification function according to the present invention;
FIG. 15 is a schematic circuit diagram of a real-time clock circuit module of the medical waste information collecting device with two-dimension code identification function according to the present invention;
fig. 16 is a schematic circuit diagram of the level shift unit, the scanner interface J7, the printer interface J4, and the communication debugging interface J8 of the medical waste information collecting apparatus with the two-dimensional code identification function according to the present invention;
fig. 17 is a schematic circuit diagram of a serial port expansion unit and a liquid crystal display interface J6 of the medical waste information acquisition device with the two-dimensional code identification function according to the present invention.
Detailed Description
The technical solution of the present invention is further explained below with reference to the specific embodiments and the accompanying drawings.
The invention provides a medical waste information acquisition device with a two-dimensional code identification function, which comprises: a main control module, a communication module, a weight information acquisition module, a two-dimension code label scanning module, a two-dimension code label output module and a power supply module which are arranged on the main board,
the communication module is connected with the main control module and is used for realizing data transmission between the acquisition terminal and the medical waste management platform server and between the acquisition terminal and the mobile phone terminal;
the weight information acquisition module is connected with the main control module and is used for acquiring the collected medical waste total weight information in real time;
the two-dimension code label scanning module is connected with the main control module through a two-dimension code information transmission circuit and is used for scanning two-dimension code labels of medical waste packaging bag identification, information acquisition place identification and medical waste handover party identification and transmitting the two-dimension code labels to the main control module;
the two-dimension code label output module is connected with the main control module through the two-dimension code information transmission circuit and is used for receiving and printing out the unique two-dimension code information generated by the main control module;
the main control module is used for receiving the weight information of the weight information acquisition module, measuring the weight of the medical waste packaged in a single bag according to the received total weight information of the medical waste and sending the measured weight to the server; the two-dimensional code is also used for receiving the two-dimensional code for identifying the identity and sending the two-dimensional code to the server for identity authorization and authentication; the system is also used for sending a two-dimension code printing instruction to the server and receiving a two-dimension code label generated by the server after the identity authorization authentication is passed;
the power module is connected with the main control module and used for providing a working power supply. In this embodiment, the whole medical waste information collecting device with the two-dimensional code identification function has 12V for the first working power supply, 5V for the second working power supply, 4.2V for the third working power supply, and 3.3V for the fourth working power supply.
Compared with the related art, the medical waste information acquisition device with the two-dimension code identification function provided by the embodiment integrates the two-dimension code scanning and the two-dimension code generation, not only improves the integration level of the medical waste information acquisition device, moreover, the two-dimensional code scanner interface transmits the scanned two-dimensional code data to an LPC2134 chip of the main control module for processing and identification through the level conversion unit and the serial port expansion unit without introducing an additional control chip for processing the scanned two-dimensional code data, therefore, the power consumption is reduced, the stability of the control system of the balance car is improved, the newly generated two-dimensional code transmitted by the LPC2134 chip of the main control module is transmitted to a printer interface through the serial port expansion unit and the level conversion unit in sequence, extra printer generation and printing equipment is not required to be introduced, and the size of the whole acquisition device is reduced.
The medical waste information collection device with the two-dimension code identification function provided by the embodiment can be used for scanning and identifying the identity information of the staff at both sides of handover in the medical waste collection and handover process through the combination of the two-dimension code scanning module, the master control module and the NB-IOT communication unit and uploading the identity information to the medical waste management platform server for identity authority authentication by virtue of the two-dimension code scanning identification unit, the master control unit and the NB-IOT communication unit, so that the identity of the staff at both sides of medical waste handover can be ensured to have the collection and handover authorities, the staff in charge can be conveniently traced when the medical waste circulation process has problems, meanwhile, the two-dimension code scanning identification unit can be used for scanning the two-dimension code information on the waste outer packaging bag, and the packaged waste can be completely collected, warehoused and stored, And (5) real-time supervision of ex-warehouse and other flow transfer processes.
Specifically, the main control module comprises a microprocessor chip LPC2134, and further comprises resistors R23, R3, R35, a light emitting diode D1, a download enabling interface JP2, a JTAG debugging interface, a download interface J2, a system clock circuit and a watchdog timing circuit,
the pin 16, the pin 17 and the pin 48 of the LPC2134 chip are respectively connected with the resistors R23, R3 and R35 and then are connected to a fourth working power supply; pin 41 IS connected to the fourth operating power supply after being connected with led D1, pin 41 IS connected to pin 1 of download enable interface JP2, pin 2 of JP2 IS grounded, pins 64, 60, 56, 52, 20, 24 are connected to pins 13, 5, 9, 7, 3, 11 of JTAG debug interface respectively, pins 62, 61 are connected to the system clock circuit, pins 18, 19, 21, 23 are connected to pins 1, 2, 3, 4 of program download interface J2 respectively, pins 28, 29, 30, 31, 32, 27 are correspondingly connected to pins 1, 2, SDA 3, 7, 6, 5 of memory card chip IS25LQ016B, pin 26(SDA) IS connected to the data line of I2C serial bus, and pin 22(SCL) IS connected to the control line of I2C serial bus; the memory card chip IS25LQ016B IS mainly used for storing configuration information of devices, such as hospital names, department lists, waste categories, network parameters of server IP and the like, weighing records, transportation line positioning information, temporary data of waste warehousing and ex-warehousing, and the like.
The system clock circuit includes: the circuit comprises a capacitor C1, a capacitor C2 and a crystal oscillator Y1, wherein the capacitor C1 and the capacitor C2 are connected in series and then are connected in parallel with the crystal oscillator Y1, two ends of the crystal oscillator Y1 are connected with an LPC2134 chip, and the capacitor C1 and the capacitor C2 are grounded. Wherein the frequency of the crystal oscillator Y1 is 11.0592 MHZ.
The LPC2134 chip is powered by a fourth working power supply, and pins 63, 51, 49, 43, 23 and 7 of the LPC2134 chip are all connected with the fourth working power supply;
the watchdog timing circuit comprises an SP706TEN chip, resistors R7 and R4, and a short-circuit money-jumping cap interface JP3, wherein a pin 6 of the SP706TEN chip is connected with a pin 2 of an LPC2134 chip; pin 7 of the SP706TEN chip is respectively connected with pin 5 of the LPC2134 chip and one end of a resistor R7, and the other end of the resistor R7 is connected with a fourth working power supply; pin 1 of the SP706TEN chip is respectively connected with pin 1 of the short-circuit money-jumping cap interface JP3 and one end of a resistor R4, and the other end of the resistor R4 is connected with a fourth working power supply; pin 8 of the SP706TEN chip is connected with pin 2 of the short-circuit money-jumping cap interface JP 3; and pin 2 and pin 4 of the SP706TEN chip are connected with a fourth working power supply, pin 3 is grounded, wherein JP3 is a short-circuit trip nut interface, the short-circuit trip nut interface is opened during debugging of a program, and the short-circuit trip nut interface is short-circuited during formal mass production of the program, namely the hardware watchdog function is started.
The two-dimensional code label scanning module comprises a scanner interface J7, the two-dimensional code label output module comprises a printer interface J4, and the two-dimensional code information transmission circuit comprises a level conversion unit and a serial port expansion unit.
The level conversion unit comprises a level conversion chip SP3232EEN, capacitors C3, C19, C7 and C22, wherein a pin 16 of the SP3232EEN chip is connected with a fourth working power supply, a pin 2 is connected with the capacitor C3 and then is connected with the fourth working power supply, a pin 6 is connected with the capacitor C19 and then is grounded, a pin 15 is grounded, a capacitor C22 is connected between pins 4 and 5, a capacitor C7 is connected between pins 1 and 3, pins 7 and 8 are connected with a scanner interface J7, pins 14 and 13 are connected with a printer interface J4, pins 11 and 12 are connected with a first sub-serial port expanded by a serial port expansion circuit, and pins 10 and 9 are connected with a second sub-serial port expanded by the serial port expansion circuit.
In this embodiment, the whole apparatus further includes a communication debug interface J8 connected to the level shifter, pin 2 of the communication debug interface J8 is connected to pin 7 of the WK2114 chip, and pin 3 of the communication debug interface J8 is connected to pin 13 of the WK2114 chip;
the scanner interface J7, the printer interface J4, and the communication debugging interface J8 have pin 1 connected to the second working power supply (5V) and pin 4 grounded.
The connection of the serial port expansion unit and the level conversion unit realizes the conversion between TTL level and RS232 level, thereby realizing the conversion transmission between the data of the microprocessor chip LPC2134 and the data of peripheral equipment.
The serial port expansion circuit comprises a WK2114 chip and a crystal oscillator circuit, wherein the crystal oscillator circuit comprises capacitors C47 and C48, a crystal oscillator Y2 and a resistor R31, the capacitors C47 and C48 are connected in series and then connected in parallel with a crystal oscillator Y2 and simultaneously connected in parallel with a resistor R31, two ends of the resistor R31 are respectively connected with a pin 19 and a pin 20 of the WK2114 chip, the capacitors C47 and C48 are grounded, and the frequency of the crystal oscillator Y2 is 11.0592 MHZ;
a pin 19 and a pin 20 of the WK2114 chip are respectively connected with the output end and the input end of the crystal oscillator circuit; the pin 10 and the pin 8 are correspondingly connected with pins 15 and 16 of an LPC2134 chip; pins 15 and 14 of the WK2114 chip are first sub-serial ports, pins 12 and 11 are second sub-serial ports, pins 17 and 16 are third sub-serial ports connected with a Bluetooth communication unit, pins 6 and 7 are fourth sub-serial ports connected with a liquid crystal display interface J6, and pin 3 and pin 5 of the WK2114 chip are connected with pins 33 and 34 of an LPC2134 chip.
In this embodiment, a standard 3-wire asynchronous serial port (UART) is expanded into 4 enhanced function serial ports (UARTs) by using a WK2114 chip, wherein a first sub-serial port (pin 14, 15) is connected to a level conversion unit circuit to receive processed two-dimensional code scanning data and transmit the two-dimensional code scanning data to an LPC2134 chip, a second sub-serial port (pin 12, 11) transmits waste two-dimensional code information generated by a microprocessor to the level conversion unit circuit for processing and then printing out, a third sub-serial port (pin 16 and pin 17) is connected to a bluetooth communication module, and a fourth sub-serial port (pin 6 and pin 7) is connected to a liquid crystal display socket for displaying the transmitted data on a display screen.
In this embodiment, the communication module includes an NB-IOT communication unit and a bluetooth communication unit, the NB-IOT communication unit is configured to implement data transmission between the main control module and the medical waste management platform server, and the bluetooth communication unit is configured to implement data transmission between the main control module and the mobile phone terminal.
Based on this embodiment, when data transmission is performed between the LPC2134 chip and the BC28 chip, the serial port level of the LPC2134 chip is 3.3v (ttl), and the serial port level of the BC28 is 4.2v (ttl), and for the safety and stability of the circuit, a data transmitting circuit and a data receiving circuit are respectively designed to perform level conversion, so as to achieve level matching.
The NB-IOT communication unit comprises an NB-IOT chip, a radio frequency antenna circuit, a data receiving circuit and a data sending circuit, wherein the radio frequency antenna circuit, the data receiving circuit and the data sending circuit are connected with the NB-IOT chip, the radio frequency antenna circuit is used for sending and receiving electromagnetic wave signals between the NB-IOT chip and the medical waste management platform server, the data receiving circuit is connected with the main control module and used for receiving data sent by the main control module, and the data sending circuit is connected with the main control module and used for sending data to the main control module.
The NB-IOT chip adopts a BC28 chip, the radio frequency antenna circuit comprises capacitors C40 and C41, a resistor R18 and a radio frequency antenna interface A1, a pin 35 of the BC28 chip is respectively connected with one end of the radio frequency antenna interface A1 through a resistor R18, two ends of the resistor R18 are respectively connected with one ends of the capacitors C40 and C41, and the other ends of the capacitors C40 and C41 and the radio frequency antenna interface A1 are grounded;
the data sending circuit comprises a triode T2, a resistor R17, a capacitor C39 and a pull-up resistor R22, wherein one end of the resistor R17 and the capacitor C39 which are connected in parallel is connected with a pin 24 of an LPC2134 chip, the other end of the resistor R17 and the capacitor C39 are connected with the base electrode of a triode T2, the emitter electrode of the triode T2 is connected with a pin 18 of the BC28 chip, the collector electrode of the triode T2 is connected with a pin 21 of the LPC2134 chip, and the collector electrode of the triode T is connected with a fourth working;
the data receiving circuit comprises a diode D3 and a resistor R9, wherein the anode of the diode D3 is connected with a pin 17 of the BC28 chip, the cathode of the diode D3 is connected with a pin 19 of the LPC2134 chip, a resistor R9 is connected between the diode D3 and the pin 17 of the BC28 chip, and the other end of the resistor R9 is connected with a pin 24 of the LPC2134 chip.
The NB-IOT communication module is powered by a third working power supply, and meanwhile, the NB-IOT communication module further comprises a USIM card socket circuit, a reset circuit and a network state indicator lamp circuit, wherein the USIM card socket circuit, the reset circuit and the network state indicator lamp circuit are connected with the BC28 chip;
the USIM card socket circuit comprises a USIM card interface J5A, resistors R20, R21, R22, R19, capacitors C42, C43, C46, C45 and C44, wherein a pin 1 of an interface J5A is connected with a pin 14 of a BC28 chip, a pin 1 of a J5A is connected with C42 and C43 which are connected in parallel and then grounded, a pin 2 of a J5A is connected with a pin 12 of the BC28 chip after being connected with a resistor R20, a pin 2 of a J5A is connected with a capacitor C46 and then grounded, a pin 3 of a J5A is connected with a pin 13 of the BC28 chip after being connected with a resistor R21, a pin 3 of a J5A is connected with a capacitor C45 and then grounded, a pin 4 of a J5A is connected with a pin SGND of a BC28 chip, a pin 6 of a J5A is connected with a resistor R22 and then connected with a pin 11 of a BC28 chip, and a pin 6 of a capacitor C5A is connected with a pin 44 and a pin 44.
The BC28 chip contains a USIM interface, and the support module accesses the external USIM card. The USIM interface supports the functionality of the 3GPP specification. The external USIM card supplies power through a power supply inside the module and supports 1.8/3.0V power supply. 22pF capacitors are connected in parallel on USIM _ I/O, USIM _ VDD, USIM _ CLK and USIM _ RST lines and used for filtering radio frequency interference. Meanwhile, the USIM _ I/O, USIM _ CLK, and USIM _ RST are not wired too close to each other, and ground shielding is added between the traces. A 22 ohm resistor is connected in series between the module and the external USIM card holder to suppress stray EMI and enhance ESD protection.
The reset circuit comprises a triode T3, a resistor R25 and a resistor R26, wherein the base of the triode T3 is connected with the resistor R25, a resistor R26 is connected between the emitter and the base, the collector is connected with a pin 15 of the BC28 chip, and the other end of the resistor R25 is connected with a pin 35 of the BC28 chip.
The network state indicating lamp circuit comprises a resistor R24, a light emitting diode D4 and a triode T4, wherein the base of the triode T4 is connected with a pin 16 of a BC28 chip, the collector of the triode T4 is connected with an indicating lamp D4 and a resistor R24 in sequence and then is connected with a third working power supply, and the emitter of the triode T is grounded.
In this embodiment, the bluetooth communication unit includes ZLG52810P0-1C-TC bluetooth communication chip, resistors R13, R14, and a light emitting diode L1, a pin 20 of the ZLG52810P0-1C-TC chip is connected to a pin 13 of an LPC2134 chip, the pin 20 is connected to a fourth working power supply through a pull-up resistor R13, a pin 14 of the ZLG52810P0-1C-TC chip is connected to the light emitting diodes L1 and R14 in sequence and then connected to the fourth working power supply, pins 8 and 9 are connected to the fourth working power supply, pins 10 and 11 are connected to the SGND, and a pin 6 and a pin 7 are correspondingly connected to a third sub-serial port of the WK2114 chip, respectively.
The Bluetooth communication unit is in communication connection with the mobile phone, and the staff downloads configuration information, identity verification, management and other data of waste in and out of the mobile phone through an APP program on the mobile phone, so that circulation information and basic attribute information of medical wastes can be checked in real time to check and monitor the medical wastes.
ZLG52810 is a new generation BLE5.0 pass-through module with low power consumption, low cost and small size, which is introduced by Cantonese Ligong technologies, Inc. The module can become a bridge of two-way communication between the Bluetooth device and the MCU, is compatible with serial port instruction control, is simple to operate, shortens the development cycle of a user, and accelerates the marketing of products. ZLG52810P0-1-TC is a brand-new high-throughput Bluetooth 5 module, and has the advantages of low cost, higher size and speed, lower power consumption and the like. The module adopts a half-hole process to lead out I/O, helps customers to bypass complicated radio frequency hardware design, development and production processes, and accelerates the product to come into the market. The requirement of rapid development is met, software investment is reduced, and the research and development period is shortened. The module is simple and convenient to use, and can bridge electronic products and intelligent mobile equipment rapidly.
The weight information acquisition module comprises a weight sensor interface J3, a filter circuit and an ADS1230 analog-to-digital conversion chip, wherein the filter circuit comprises a capacitor C4, a capacitor C9, a first pi-type filter and a second pi-type filter, one end of the capacitor C4 is respectively connected with a pin 3 of the weight sensor interface J3 and an input end of the first pi-type filter circuit, the other end of the capacitor C4 is respectively connected with a pin 2 of an interface J3 and an input end of the second pi-type filter, one end of the capacitor C9 is respectively connected with an output end of the first pi-type filter circuit and a pin 7 (namely an AINP pin) of the ADS1230 chip, and the other end of the capacitor C9 is respectively connected with an output end of the second pi-type filter and a pin 8 (namely an AINN pin) of the ADS 1230.
The first pi-type filter circuit and the second pi-type filter circuit respectively inhibit common-mode interference of two input signals of AINP and AINN, and the capacitors C4 and C9 inhibit differential-mode interference of the two input signals of AINP and AINN.
The first pi-type filter circuit comprises a resistor R8, a capacitor C5 and a capacitor C6, one end of the resistor R8 is connected with the input end and one end of the capacitor C5 respectively, the other end of the resistor R8 is connected with the output end and one end of the capacitor C6 respectively, and the other end of the capacitor C5 and the other end of the capacitor C6 are both grounded; the first pi-type filter circuit comprises a resistor R10, capacitors C6 and C10, one end of the resistor R10 is connected with the input end and one end of the capacitor C6 respectively, the other end of the resistor R10 is connected with the output end and one end of the capacitor C10 respectively, and the other end of the capacitor C6 and the other end of the capacitor C10 are both grounded.
The weight information acquisition module further comprises resistors R11, R12, R36 and R37, electrolytic capacitors C29, capacitors C11, C12, C13 and C14, pins 16, 15 and 14 of the ADS1230 chip are respectively connected with pins 38, 37 and 35 of the LPC2134 chip, meanwhile, the pins 16 and 15 are respectively connected with resistors R36 and R37 and then connected with a fourth working power supply, the pin 1 and the pin 12 are connected with the fourth working power supply, one end of the electrolytic capacitor C29 is grounded, the other end of the electrolytic capacitor C29 is connected with the fourth working power supply, the pins 4, 3, 13, 21 and 11 are grounded, and the pin 9 is grounded through the parallel-connected R11 and C13; a capacitor C14 is connected between pins 5 and 6; one end of the capacitor C11 is grounded, and the other end is connected to a fourth working power supply; one end of the capacitor C12 is grounded, the other end of the capacitor C12 is respectively connected with one end of the resistor R12 and the pin 10 of the ADS1230 analog-to-digital conversion chip, and the other end of the resistor R12 is connected with the fourth working power supply.
The weight information acquisition module of this embodiment carries out the useless weight data measurement of single bag medical through LPC2134 chip that transmits the weight data that obtains weight sensor to the main control unit, has realized obtaining the useless weight of single bag medical automatically through the sensor, has avoided the tradition to collect the trouble that needs take weighing device outward when doctor is useless.
In the weight information collecting module of this embodiment, the circuit composed of C11, C12, and R12 suppresses the interference signal of the small signal at high frequency at the power source end, and reduces the interference effect of the input signal of the ADS1230 chip 10, where C11 is a decoupling capacitor.
The electrolytic capacitor C29 is a filter capacitor of a power supply, because the output in partial chips is open-circuited at the drain, basically no high-level driving capability exists, and the pull-up resistors R36 and R37 are arranged to improve the driving capability and increase the anti-interference capability of output/input signals.
It will be appreciated that pull-up resistors in other chip circuits in the present invention have this effect as well.
A pin 9 and a pin 10 of an ADS1230 chip are a pair of excitation signals of an external sensor, the pin 9 is negative excitation, and interference possibly introduced on an external signal line through J3 is filtered through a resistance-capacitance network composed of R11 and C13, the pin 11 is analog ground, the pin 2 is digital ground, the pin 13 controls AD conversion speed, and the pin 3 is an external clock source (grounded under the condition of no use).
The medical waste information acquisition device with the two-dimensional code identification function in the embodiment further comprises a real-time clock circuit module connected with the main control module, and is used for recording the real-time for scanning the two-dimensional code and providing the time information required by the two-dimensional code generation, and comprises a PCF8563T chip, a crystal oscillator T1, a diode D2, a direct current power supply B2, a resistor R5 and a resistor R6, wherein,
a crystal oscillator T1 is connected between pins 1 and 2 of the PCF8563T chip;
a pin 8 of the PCF8563T chip is respectively connected with one end of a diode D2 and the anode of a direct current power supply B2, the other end of the diode D2 is connected with a fourth working power supply, and the cathode of the direct current power supply B2 is grounded;
This real-time clock circuit module mainly takes notes the time that each incident takes place, acquires real-time information when scanning the two-dimensional code at every turn, and the data format who converts absolute time stamp uploads to medical treatment discarded object management platform server, when medical discarded object is collected in hospital's administrative or technical offices, when needing to generate the two-dimensional code label on the outer packing bag, uploads to medical treatment discarded object management platform server with the printing time, participates in the encryption algorithm of two-dimensional code for the two-dimensional code that generates prevents to forge.
The medical waste information acquisition device with the two-dimensional code identification function in the embodiment further comprises a key management circuit module connected with the main control module, wherein the key management circuit module comprises a chip ZLG72128 and a matrix keyboard circuit,
the matrix keyboard circuit is2 rows and 8 columns, and 10 ports of the matrix keyboard circuit are respectively connected to pins 11 to 20 of a chip ZLG72128 through resistors; specifically, 8 keys are arranged in one row, and 4 keys are arranged in zero row.
The pin 6 of the ZLG72128 chip is respectively connected with the pin 46 of the LPC2134 chip and one end of the resistor R15, and the other end of the resistor R15 is connected with a fourth working power supply; pin 4 of ZLG72128 chip is connected to the fourth working power supply, capacitor C15 is connected between pin 2 and pin 3, pin 1 is connected to pin 45 of LPC2134 chip and one end of resistor R16, and the other end of resistor R16 is connected to the fourth working power supply; pins 7 and 8 connect the I2C serial bus of the LPC2134 chip.
In this embodiment, in order to input an operation instruction on the display screen of the medical waste information collection device having the two-dimensional code identification function, a key management circuit module is designed, and 12 keys thereof may implement different functions according to the instruction of the system platform. I.e., the key values of the keys are fixed, but the functions corresponding to the key values are configurable. For example: key values 1-5 can correspond to the classification categories of the waste: infectious, damaging, pathological, pharmaceutical, chemical; can also be configured into corresponding categories such as plastic bottles, glass bottles, plastic bags, metals, and the like through instructions; other key values can be configured with various operation function keys, such as printing, inquiring, page turning, parameter setting and the like. I.e. it enables an unlimited definition of the functions on a limited number of keys.
In this embodiment, the power module includes an external dc power input interface J10, a power switch interface J11, a built-in lithium battery interface J9, a first step-down dc voltage source circuit, a second step-down dc voltage source circuit, and a forward low voltage drop regulator P2, where a rated voltage of power supply of the lithium battery is 11.1V, one end of the power switch interface J11 is respectively connected to an interface J9 and an interface J10 to realize switching between an external power supply and the built-in lithium battery, the other end of the interface J11 is respectively connected to input ends of the first step-down dc voltage source circuit and the second step-down dc voltage source circuit, an output end of the first step-down dc voltage source circuit outputs the second working power, the second step-down dc voltage source circuit is used to output the third working power supply to supply the NB-IOT communication unit, and an output end of the first step-down dc voltage source circuit is connected to an input end of, the low dropout regulator P2 employs AMS1117-3.3 for outputting a fourth operating power.
The first step-down direct-current voltage source circuit and the second step-down direct-current voltage source circuit adopt a step-down direct-current power converter chip XL1583, in the step-down direct-current voltage source circuit, a pin 2 of the XL1583 chip is connected with a first capacitor and a first electrolytic capacitor which are connected in parallel and then grounded, a third resistor is connected between the pin 2 and a pin 7, a pin 5 of the XL1583 chip is respectively connected with one end of the first resistor, one end of the second resistor and one end of the second capacitor, the other end of the second resistor is grounded, the other end of the second capacitor is connected with the other end of the first resistor, the other end of the first resistor is connected with one end of the second electrolytic capacitor, the other end of the second electrolytic capacitor is grounded, a pin 3 of the XL1583 chip is respectively connected with one end of a first inductor and one end of a first Schottky diode, the other end of the first inductor is respectively connected with a second electrolytic capacitor, one end of the fourth capacitor, one end of the fifth capacitor, and the other end of the third capacitor, the fourth capacitor and the other end of the fifth capacitor are grounded.
the first resistance in the first step-down direct-current voltage source circuit is 5.23k ohms, the second resistance is 2.2k ohms, the first resistance in the first step-down direct-current voltage source circuit is 6.2k ohms, and the second resistance is 2k ohms.
In the first step-down direct-current voltage source circuit, a first capacitor is C20, a first electrolytic capacitor is C28, a third resistor is R40, a first resistor is R41, a second resistor is R39, a second capacitor is C21, a second electrolytic capacitor is C23, a first inductor is L2, a first schottky diode is D11, a third capacitor is C24, a fourth capacitor is C33, a fifth capacitor is C34, wherein R1 is 6.2k ohms, a resistor R2 is 2k ohms, and an input end of the first step-down direct-current voltage source circuit is connected with a 12V direct-current voltage, so that an output voltage Vout is 1.22 ═ (1+ R1/R2), and is about 5V;
in the second step-down direct-current voltage source circuit, the first capacitor is C50, the first electrolytic capacitor is C49, the third resistor is R33, the first resistor is R34, the second resistor is R32, the second capacitor is C51, the second electrolytic capacitor is C52, the first inductor is L3, the first schottky diode is D5, the third capacitor is C53, the fourth capacitor is C54, the fifth capacitor is C55, wherein R1 is 5.23k ohm, the resistor R2 is 2.2k ohm, the input end of the first step-down direct-current voltage source circuit is connected with a 12V direct-current voltage, so that the output voltage Vout is 1.22 (1+ R1/R2), and is about 4.12V;
in this embodiment, provide working power supply for whole collection terminal through external 12V dc power supply and lithium cell, the working power supply that its each circuit module needs can through first step-down dc voltage source circuit and second step-down dc voltage source circuit, third step-down circuit, with 12V's first working power supply, the step-down converts 5V into, 4.2V, 3.3V, supply each module circuit to use, not only realized the selection switching use of external power supply and built-in lithium cell, the working power supply of equidimension not is provided for whole collection terminal simultaneously, each module circuit job stabilization nature has been improved.
In this example, considering that the battery is normally powered, in order to directly obtain the capacity information of the battery, a battery capacity detection circuit is designed, where the battery capacity detection circuit includes an LMV358 chip, resistors R42 and R43, a pin 1 of the LMV358 chip is connected to a pin 14 of an LPC2134 chip and a pin 2 of the LMV358 chip, a pin 4 of the LMV358 chip is grounded, a pin 3 of the LMV358 chip is connected to one end of a resistor R42 and one end of a resistor R43, the other end of the resistor R42 is connected to a first working power supply (12V), the other end of the resistor R43 is grounded, and a pin 8 of the LMV358 chip is connected to a second working power supply (5V);
the circuit measures the voltage of +12V (namely input power supply), normally supplies power to the battery, and can directly reflect the capacity information of the battery by measuring the voltage. After a 12V voltage signal is input and divided by R42 and R43, the voltage signal is input to an AD sampling pin of LPC2134 through a voltage follower formed by an operational amplifier to sample the voltage of the battery.
The invention also provides a medical waste information acquisition system with the two-dimensional code identification function, which comprises the medical waste information acquisition device with the two-dimensional code identification function in the embodiment.
The medical waste information acquisition system with the two-dimensional code identification function further comprises a medical waste management platform server for receiving and storing all data acquired by the acquisition system; the system comprises a receiving party identity two-dimension code receiving module, a permission management module and a permission management module, wherein the receiving party identity two-dimension code receiving module is used for receiving a receiving party identity two-dimension code; the two-dimensional code generating and encrypting system is used for receiving a two-dimensional code printing instruction, and generating a unique two-dimensional code label of each bag of medical wastes by a two-dimensional code generating and encrypting algorithm according to weight data of each bag of medical wastes, identity information of a collector and a deliverer, collecting time, a department and medical waste types.
The present invention is not limited to the above-described embodiments, and those skilled in the art will be able to make various modifications without creative efforts from the above-described conception, and fall within the scope of the present invention.
Claims (10)
1. Medical waste information acquisition device who possesses two-dimensional code marking function includes: a main control module, a communication module, a weight information acquisition module, a two-dimension code label scanning module, a two-dimension code label output module and a power supply module which are arranged on the main board,
the communication module is connected with the main control module and is used for realizing data transmission between the acquisition terminal and the medical waste management platform server and between the acquisition terminal and the mobile phone terminal;
the weight information acquisition module is connected with the main control module and is used for acquiring the collected medical waste total weight information in real time;
the two-dimension code label scanning module is connected with the main control module through a two-dimension code information transmission circuit and is used for scanning two-dimension code labels of medical waste packaging bag identification, information acquisition place identification and medical waste handover party identification and transmitting the two-dimension code labels to the main control module;
the two-dimension code label output module is connected with the main control module through a two-dimension code information transmission circuit and is used for receiving and printing out the unique two-dimension code information generated by the main control module;
the main control module is used for receiving the weight information of the weight information acquisition module, measuring the weight of the medical waste packaged in a single bag according to the received total weight information of the medical waste and sending the measured weight to the server; the two-dimensional code is also used for receiving the two-dimensional code for identifying the identity and sending the two-dimensional code to the server for identity authorization and authentication; the system is also used for sending a two-dimension code printing instruction to the server and receiving a two-dimension code label generated by the server after the identity authorization authentication is passed;
the power supply module is connected with the main control module and used for providing a working power supply.
2. The medical waste information collection device having a two-dimensional code identification function according to claim 1, characterized in that: the main control module comprises a microprocessor chip LPC2134, the two-dimensional code label scanning module comprises a scanner interface J7, the two-dimensional code label output module comprises a printer interface J4, and the two-dimensional code information transmission circuit comprises a level conversion unit and a serial port expansion unit.
3. The medical waste information collection device having a two-dimensional code identification function according to claim 2, characterized in that: the level conversion unit comprises a level conversion chip SP3232EEN, capacitors C3, C19, C7 and C22, a pin 16 of the SP3232EEN chip is connected with a fourth working power supply, a pin 2 is connected with the capacitor C3 and then is connected with the fourth working power supply, a pin 6 is connected with the capacitor C19 and then is grounded, a pin 15 is grounded, a capacitor C22 is connected between pins 4 and 5, a capacitor C7 is connected between pins 1 and 3, pins 7 and 8 are connected with a scanner interface J7, pins 14 and 13 are connected with a printer interface J4, pins 11 and 12 are connected with a first sub-serial port expanded by a serial port expansion circuit, and pins 10 and 9 are connected with a second sub-serial port expanded by the serial port expansion circuit;
the serial port expanding circuit comprises a WK2114 chip and a crystal oscillator circuit,
the crystal oscillator circuit comprises capacitors C47 and C48, a crystal oscillator Y2 and a resistor R31, wherein the capacitors C47 and C48 are connected in series and then connected in parallel with the crystal oscillator Y2, and simultaneously connected in parallel with the resistor R31, two ends of the resistor R31 are respectively connected with a pin 19 and a pin 20 of a WK2114 chip, the capacitors C47 and C48 are grounded, and the frequency of the crystal oscillator Y2 is 11.0592 MHZ;
a pin 19 and a pin 20 of the WK2114 chip are respectively connected with the output end and the input end of the crystal oscillator circuit; the pin 10 and the pin 8 are correspondingly connected with pins 15 and 16 of an LPC2134 chip; pins 15 and 14 of the WK2114 chip are first sub-serial ports, pins 12 and 11 are second sub-serial ports, pins 17 and 16 are third sub-serial ports connected with a Bluetooth communication unit, pins 6 and 7 are fourth sub-serial ports connected with a liquid crystal display interface J6, and pin 3 and pin 5 of the WK2114 chip are connected with pins 33 and 34 of an LPC2134 chip.
4. The medical waste information collection device having a two-dimensional code identification function according to claim 1, characterized in that: the communication module includes an NB-IOT communication unit and a bluetooth communication unit,
the NB-IOT communication unit comprises an NB-IOT chip, a radio frequency antenna circuit, a data receiving circuit and a data sending circuit, wherein the radio frequency antenna circuit, the data receiving circuit and the data sending circuit are connected with the NB-IOT chip, the radio frequency antenna circuit is used for transmitting and receiving electromagnetic wave signals between the NB-IOT chip and the medical waste management platform server, the data receiving circuit is connected with the main control module and is used for receiving data sent by the main control module, and the data sending circuit is connected with the main control module and is used for sending data to the main control module;
the NB-IOT chip adopts a BC28 chip, the radio frequency antenna circuit comprises capacitors C40 and C41, a resistor R18 and a radio frequency antenna interface A1, a pin 35 of the BC28 chip is respectively connected with one end of the radio frequency antenna interface A1 through a resistor R18, two ends of the resistor R18 are respectively connected with one ends of the capacitors C40 and C41, and the other ends of the capacitors C40 and C41 and the radio frequency antenna interface A1 are grounded;
the data sending circuit comprises a triode T2, a resistor R17, a capacitor C39 and a pull-up resistor R22, wherein one end of the resistor R17 and the capacitor C39 which are connected in parallel is connected with a pin 24 of an LPC2134 chip, the other end of the resistor R17 and the capacitor C39 are connected with the base electrode of a triode T2, the emitter electrode of the triode T2 is connected with a pin 18 of the BC28 chip, the collector electrode of the triode T2 is connected with a pin 21 of the LPC2134 chip, and the collector electrode of the triode T is connected with a fourth working;
the data receiving circuit comprises a diode D3 and a resistor R9, wherein the anode of the diode D3 is connected with a pin 17 of the BC28 chip, the cathode of the diode D3 is connected with a pin 19 of the LPC2134 chip, a resistor R9 is connected between the diode D3 and the pin 17 of the BC28 chip, and the other end of the resistor R9 is connected with a pin 24 of the LPC2134 chip.
5. The medical waste information collection device having a two-dimensional code recognition function according to claim 4, wherein: the Bluetooth communication unit comprises an ZLG52810P0-1C-TC Bluetooth communication chip, resistors R13, R14 and a light-emitting diode L1, wherein a pin 20 of the ZLG52810P0-1C-TC chip is connected with a pin 13 of an LPC2134 chip, the pin 20 is connected with a fourth working power supply through a pull-up resistor R13, a pin 14 of the ZLG52810P0-1C-TC chip is sequentially connected with the light-emitting diodes L1 and R14 and then connected with the fourth working power supply, pins 8 and 9 are connected with the fourth working power supply, pins 10 and 11 are connected with an SGND, and a pin 6 and a pin 7 are correspondingly connected with a third sub-serial port of the WK2114 chip respectively.
6. The medical waste information collection device having a two-dimensional code identification function according to claim 1, characterized in that: the weight information acquisition module comprises a weight sensor interface J3, a filter circuit and an ADS1230 analog-to-digital conversion chip, wherein the filter circuit comprises a capacitor C4, a capacitor C9, a first pi-type filter and a second pi-type filter, one end of the capacitor C4 is respectively connected with a pin 3 of the weight sensor interface J3 and an input end of the first pi-type filter circuit, the other end of the capacitor C4 is respectively connected with a pin 2 of an interface J3 and an input end of the second pi-type filter, one end of the capacitor C9 is respectively connected with an output end of the first pi-type filter circuit and a pin 7 of the ADS1230 chip, and the other end of the capacitor C9 is respectively connected with an output end of the second pi-type filter and a pin 8 of the ADS1230 chip.
7. The medical waste information collection device having a two-dimensional code identification function according to claim 1, characterized in that: the system also comprises a real-time clock circuit module connected with the main control module, which is used for recording the real-time for scanning the two-dimensional code and providing the time information required by the generation of the two-dimensional code, and comprises a PCF8563T chip, a crystal oscillator T1, a diode D2, a direct current power supply B2, a resistor R5 and a resistor R6, wherein,
a crystal oscillator T1 is connected between pins 1 and 2 of the PCF8563T chip;
a pin 8 of the PCF8563T chip is respectively connected with one end of a diode D2 and the anode of a direct current power supply B2, the other end of the diode D2 is connected with a fourth working power supply, and the cathode of the direct current power supply B2 is grounded;
pin 4 of the PCF8563T chip is grounded;
pin 5 of the PCF8563T chip is connected with a resistor R5 and then is connected with a fourth working power supply;
pin 6 of the PCF8563T chip is connected to the SCL control line of the I2C serial bus of the LPC2134 chip, and pin 6 is connected to the fourth working power supply through a resistor R5;
pin 7 of the PCF8563T chip is connected to the SDA data line of the I2C serial bus of the LPC2134 chip, while pin 7 is connected to the fourth operating power supply through resistor R6.
8. The medical waste information collection device having a two-dimensional code identification function according to claim 1, characterized in that: the keyboard comprises a main control module, a key management circuit module connected with the main control module, wherein the key management circuit module comprises a chip ZLG72128 and a matrix keyboard circuit,
the matrix keyboard circuit is2 rows and 8 columns, and 10 ports of the matrix keyboard circuit are respectively connected to pins 11 to 20 of a chip ZLG72128 through resistors;
the pin 6 of the ZLG72128 chip is respectively connected with the pin 46 of the LPC2134 chip and one end of the resistor R15, and the other end of the resistor R15 is connected with a fourth working power supply; pin 4 of ZLG72128 chip is connected to the fourth working power supply, capacitor C15 is connected between pin 2 and pin 3, pin 1 is connected to pin 45 of LPC2134 chip and one end of resistor R16, and the other end of resistor R16 is connected to the fourth working power supply; pins 7 and 8 connect the I2C serial bus of the LPC2134 chip.
9. The medical waste information collection device having a two-dimensional code identification function according to claim 1, characterized in that: the power supply module comprises an external direct-current power supply input interface J10, a power supply switch interface J11, a built-in lithium battery interface J9, a first step-down direct-current voltage source circuit, a second step-down direct-current voltage source circuit and a forward low-voltage-drop voltage regulator P2, wherein one end of the power supply switch interface J11 is respectively connected with an interface J9 and an interface J10 to realize the switching between an external power supply and a built-in lithium battery, the other end of the interface J11 is respectively connected to the input ends of the first step-down direct-current voltage source circuit and the second step-down direct-current voltage source circuit, the output end of the first step-down direct-current voltage source circuit outputs a second working power supply, the second step-down direct-current voltage source circuit is used for outputting a third working power supply to the NB-IOT communication unit, the output voltage of the output end of the first step-down direct-current voltage source circuit is connected, for outputting the fourth operating power.
The first step-down direct-current voltage source circuit and the second step-down direct-current voltage source circuit adopt a step-down direct-current power converter chip XL1583, in the step-down direct-current voltage source circuit, a pin 2 of the XL1583 chip is connected with a first capacitor and a first electrolytic capacitor which are connected in parallel and then grounded, a third resistor is connected between the pin 2 and a pin 7, a pin 5 of the XL1583 chip is respectively connected with one end of the first resistor, one end of the second resistor and one end of the second capacitor, the other end of the second resistor is grounded, the other end of the second capacitor is connected with the other end of the first resistor, the other end of the first resistor is connected with one end of the second electrolytic capacitor, the other end of the second electrolytic capacitor is grounded, a pin 3 of the XL1583 chip is respectively connected with one end of a first inductor and one end of a first Schottky diode, the other end of the first inductor is respectively connected with a second electrolytic capacitor, one end of the fourth capacitor, one end of the fifth capacitor, and the other end of the third capacitor, the fourth capacitor and the other end of the fifth capacitor are grounded.
The first resistance in the first step-down direct-current voltage source circuit is 5.23k ohms, the second resistance is 2.2k ohms, the first resistance in the first step-down direct-current voltage source circuit is 6.2k ohms, and the second resistance is 2k ohms.
10. Medical discarded object information acquisition system who possesses two-dimensional code mark function, its characterized in that:
the medical waste information acquisition device with the two-dimensional code identification function comprises the medical waste information acquisition device with the two-dimensional code identification function of any one of claims 1 to 8;
the medical waste management platform server is used for receiving and storing all data acquired by the acquisition system; the system comprises a receiving party identity two-dimension code receiving module, a permission management module and a permission management module, wherein the receiving party identity two-dimension code receiving module is used for receiving a receiving party identity two-dimension code; the two-dimensional code generating and encrypting system is used for receiving a two-dimensional code printing instruction, and generating a unique two-dimensional code label of each bag of medical wastes by a two-dimensional code generating and encrypting algorithm according to weight data of each bag of medical wastes, identity information of a collector and a deliverer, collecting time, a department and medical waste types.
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