Conductivity meter on-line comparison device installed on pharmaceutical water equipment

Abstract

The utility model relates to the technical field of pharmaceutical equipment, and discloses a conductivity meter on-line comparison device installed on pharmaceutical water equipment, which comprises the pharmaceutical water equipment connected to a sealed pipeline through different joints, and a wireless temperature sensor, a wireless flow velocity sensor and a wireless conductivity sensor are designed, so that the conductivity meter on-line comparison device can be compared with the pharmaceutical water equipment through the wireless temperature sensor, the wireless flow velocity sensor and the wireless conductivity sensor. The temperature parameter, the flow velocity parameter and the conductivity value of water circulating in a sealed pipeline can be displayed in real time under the condition that a conductivity meter installed on a pharmaceutical water production line is not disassembled; in a data measurement process, a matching mode that an ADC for high-speed digital-to-analog conversion is matched with a central controller is adopted, so that various parameters are simultaneously acquired at a high speed, and rapid data conversion and storage functions are completed; a 2.4 GHz low-power-consumption Bluetooth scheme is adopted for a communication interface, the wireless transmission power can be greatly reduced through the low-power Bluetooth technology, it is guaranteed that the transmission module works stably for a long time, and it is guaranteed that data can be stably transmitted in a sealed environment.

Description

Technical Field

[0001] The utility model relates to the technical field of pharmaceutical equipment, in particular to the field of conductivity meters used for pharmaceuticals, in particular to an online comparison device for conductivity meters installed on pharmaceutical water equipment. Background Art

[0002] Conductivity meters for pharmaceutical use play a vital role in the pharmaceutical industry. They are mainly used to monitor and control the conductivity of various aqueous solutions involved in the pharmaceutical process, thereby ensuring the purity and safety of drugs.

[0003] A search revealed patent application number CN202122021535.5, which discloses a conductivity meter comprising a main body, a bracket slidably connected to the sidewall of the main body, a clamp provided at one end of the bracket away from the main body, a rod slot provided on the side of the main body close to the bracket, an electrode rod inserted into the slot, the electrode rod electrically connected to the main body, and an abutment plate slidably connected to the sidewall of the rod slot, the abutment plate being close to the notch of the rod slot. This application has the effect of reducing the risk of electrode damage, thereby reducing the impact on detection accuracy.

[0004] The conductivity meters currently installed on pharmaceutical water equipment are not convenient to disassemble for inspection and to compare the values ​​of various parameters of the solution. Therefore, we need to propose an online comparison device for the conductivity meters installed on pharmaceutical water equipment, which can perform online value comparison of the conductivity meters installed on the pharmaceutical water production line without disassembling them. Utility Model Content

[0005] The purpose of the present utility model is to provide an online comparison device for conductivity meters installed on pharmaceutical water equipment. Through the design of wireless temperature sensors, wireless flow rate sensors, and wireless conductivity sensors, the device can display the temperature parameters, flow rate parameters, and conductivity values ​​of water flowing in a sealed pipe in real time without disassembling the conductivity meter installed on the pharmaceutical water production line. During the data measurement process, a high-speed digital-to-analog converter (ADC) is used in combination with a central controller to achieve simultaneous high-speed acquisition of various parameters and complete rapid data conversion and storage functions, thereby solving the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: an online conductivity meter comparison device installed on a pharmaceutical water device, comprising a pharmaceutical water device connected to a sealed pipe via different joints, the pharmaceutical water device comprising:

[0007] A wireless temperature sensor for real-time monitoring and display of the temperature of water in a sealed pipe;

[0008] A wireless flow rate sensor for real-time monitoring and display of the flow rate of water in a sealed pipe;

[0009] A wireless conductivity sensor for real-time monitoring and display of the conductivity value of water in a sealed pipe;

[0010] It also includes a wireless handheld receiving device for switching the working mode of the pharmaceutical water equipment and configuring the node parameters, device address and device sleep time of the pharmaceutical water equipment. The wireless handheld receiving device communicates with the wireless temperature sensor, wireless flow rate sensor and wireless conductivity sensor in a wireless manner.

[0011] Preferably, the wireless temperature sensor includes a battery power supply unit, a main processor, a radio frequency processor electrically connected to the main processor, and a temperature sensitive head. The main processor and the radio frequency processor are both electrically connected to the battery power supply unit, and the radio frequency processor is connected to an antenna.

[0012] Preferably, the RF processor includes a microprocessor, an on-chip bus, and a 2.4 GHz transceiver. The main processor is connected to the on-chip bus via an ADC interface, a UART interface, an SPI interface, and a GPIO interface, and the microprocessor is connected to the on-chip bus line.

[0013] Preferably, the 2.4GHz transceiver is connected to the antenna, the 2.4GHz transceiver is connected to a router, the router is connected to a protocol accelerator, and the protocol accelerator is electrically connected to an on-chip bus, and the microprocessor is respectively connected to a electrically erasable programmable read-only memory, an internal memory, and a flash memory.

[0014] Preferably, the battery power supply unit includes a terminal JP7 and a power management chip U5, wherein pin 1 of the power management chip U5 is connected to a 12V power supply voltage and is connected to capacitors C60 and C71 arranged in parallel, and pin 3 of the power management chip U5 is connected to a resistor R89 ​​connected to a 12V power supply voltage;

[0015] A resistor R80, a resistor R86, a capacitor C72, and an inductor L2 are connected between pins 4 and 8 of the power management chip U5. The connection terminals of the capacitor C72 and the inductor L2 are connected to resistors R78 and R90 connected in series and grounded, and resistors R79 and R93 connected in series and grounded. The connection terminals of the capacitor C72 and the resistor R79 are connected to capacitors C73 and C74 arranged in parallel.

[0016] The diode D2 and the resistor R81 are connected in series to the connection terminals of the capacitors C73 and C74. One end of the resistor R81 is connected to pin 3 of the connection terminal JP7.

[0017] Preferably, the wireless handheld receiving device includes a core processor, a power supply battery, a reset circuit electrically connected to the core processor and the power supply battery, a keyboard, an LCD display, a backlight circuit, a voltage detection circuit, an RF module, an external charging port, an external flash memory, and a USB interface.

[0018] Preferably, the wireless conductivity sensor is any one of an electrode-type conductivity sensor, an inductance-type conductivity sensor, and an ultrasonic conductivity sensor; and the wireless flow velocity sensor is a sensor based on the Hall effect.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] 1. This utility model uses the design of wireless temperature sensors, wireless flow rate sensors, and wireless conductivity sensors to display the temperature parameters, flow rate parameters, and conductivity values ​​of water flowing in sealed pipes in real time without dismantling the conductivity meter installed on the pharmaceutical water production line.

[0021] 2. During the data measurement process, the utility model adopts a high-speed digital-to-analog conversion ADC and a central controller to achieve simultaneous high-speed acquisition of various parameters and complete the fast data conversion and storage functions;

[0022] 3. The communication interface of this utility model adopts a 2.4GHz low-power Bluetooth solution. Low-power Bluetooth technology can significantly reduce the power of wireless transmission, ensuring that the transmission module can work stably for a long time and ensure that data can be transmitted stably in a sealed environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is the system block diagram of the wireless temperature sensor of the utility model;

[0024] Figure 2 This is a system block diagram of the wireless handheld receiving device of the present utility model;

[0025] Figure 3 This is a circuit diagram of the battery power supply unit of the utility model. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] See also Figure 1-3The utility model provides a technical solution: an online comparison device for a conductivity meter installed on a pharmaceutical water device, comprising a pharmaceutical water device connected to a sealed pipe through different joints, the pharmaceutical water device comprising:

[0028] A wireless temperature sensor for real-time monitoring and display of the temperature of water in a sealed pipe;

[0029] The wireless temperature sensor includes a battery power supply unit, a main processor, a radio frequency processor electrically connected to the main processor, and a temperature sensitive head. The main processor and the radio frequency processor are both electrically connected to the battery power supply unit, and the radio frequency processor is connected to an antenna.

[0030] The RF processor includes a microprocessor, an on-chip bus, and a 2.4GHz transceiver. The main processor is connected to the on-chip bus via an ADC interface, a UART interface, an SPI interface, and a GPIO interface to realize the ADC, UART, SPI, and GPIO communication functions of the main processor. Pressure signal acquisition and digital compensation can be achieved through a single chip. The microprocessor is connected to the on-chip bus line.

[0031] The microprocessor is set to a 32-bit reduced instruction set microprocessor.

[0032] The 2.4GHz transceiver is connected to an antenna, a router is connected to the 2.4GHz transceiver, a protocol accelerator is connected to the router, and the protocol accelerator is electrically connected to an on-chip bus. The microprocessor is respectively connected to a electrically erasable programmable read-only memory, an internal memory, and a flash memory.

[0033] The router is set as an O-QPSK router, and the protocol accelerator supports multiple protocols such as IEEE802.15.4, ZigBee Pro, and HomeAutomation.

[0034] After the temperature sensitive head obtains the temperature signal of the measured position, it enters the RF processor for processing after filtering, amplification, and ADC conversion. The signal is converted by signal modulation links such as protocol accelerator and O-QPSK router, and then transmitted through 2.4GHz transceiver and supporting antenna, and transmitted to the wireless handheld receiving device via wireless network.

[0035] The battery power supply unit includes a terminal JP7 and a power management chip U5. The model of the power management chip U5 is MP24943. Pin 1 of the power management chip U5 is connected to a 12V power supply voltage and is connected to capacitors C60 and C71 arranged in parallel. Pin 3 of the power management chip U5 is connected to a resistor R89 ​​connected to a 12V power supply voltage.

[0036] A capacitor C75 is connected between pins 2 and 5 of the power management chip U5, a resistor R77 and a capacitor C59 are connected between pins 7 and 8 of the power management chip U5, and a grounded diode D3 is also connected to pin 8 of the power management chip U5;

[0037] A resistor R80, a resistor R86, a capacitor C72, and an inductor L2 are connected between pins 4 and 8 of the power management chip U5. The connection terminals of the capacitor C72 and the inductor L2 are connected to resistors R78 and R90 connected in series and grounded, and resistors R79 and R93 connected in series and grounded. The connection terminals of the capacitor C72 and the resistor R79 are connected to capacitors C73 and C74 arranged in parallel.

[0038] The connection terminals of the capacitors C73 and C74 are connected in series with a diode D2 and a resistor R81. The connection terminals of the diode D2 and the resistor R81 are connected with a grounded capacitor C121. One end of the resistor R81 is connected to pin 3 of the connection terminal JP7.

[0039] A wireless flow rate sensor for real-time monitoring and display of the flow rate of water in a sealed pipe;

[0040] A wireless conductivity sensor for real-time monitoring and display of the conductivity value of water in a sealed pipe;

[0041] The wireless conductivity sensor is selected from any one of an electrode-type conductivity sensor, an inductive conductivity sensor, and an ultrasonic conductivity sensor; and the wireless flow velocity sensor is a sensor based on the Hall effect.

[0042] Specifically, electrode-type conductivity sensors use a resistance measurement method based on the principle of electrolytic conductivity. To measure conductivity, the conductivity measurement electrode behaves as a complex electrochemical system during the measurement process.

[0043] Inductive conductivity sensors measure liquid conductivity based on the principle of electromagnetic induction. The structure of an inductive sensor is similar to a pair of transformer coils, where the solution to be measured is the transformer core. The two parallel coils are parallel, compact, and insulated from each other. They are installed in a ring-shaped polymer and immersed in the solution for measurement.

[0044] Inductive sensors are suitable for measuring medium to high conductivities. These electrodes have no metal in contact with the solution, so there are no polarization or scaling issues. However, the measuring electric field surrounds the outside of the measuring ring and passes through the flow hole. Therefore, sufficient space must be left around the sensor to ensure the integrity of the cell constant.

[0045] Inductive sensors are often installed in large-diameter pipes or immersed in open tanks. When pipes or other physical obstructions enter the measurement field, in-situ calibration is required to adjust the affected cell constant. The sensor must always be installed in the same direction of flow. Because inductive sensors have no wetted metal parts and are constructed from PEEK or PFA polymers, they offer excellent chemical resistance.

[0046] Ultrasonic conductivity sensors measure conductivity based on changes in ultrasonic waves in liquids.

[0047] It is worth noting that when selecting a conductivity sensor, there are many factors to consider, such as measurement range, measurement accuracy, electrode material, compliance with regulatory requirements, temperature and pressure resistance, corrosion resistance, installation method, anti-interference ability, maintenance and calibration, and many other factors.

[0048] Choosing the right conductivity sensor is crucial for obtaining accurate and reliable results. Different construction types and materials offer a wide range of options for optimizing for specific applications. Process connection compatibility also needs to be considered.

[0049] The cell constant and construction type of the sensor must also be considered. The correct cell constant will cover the conductivity range of the sample. Generally, the lower the conductivity of the sample, the smaller the cell constant will be selected.

[0050] Generally, for low to medium conductivity measurements, a 2-electrode sensor should be selected; for medium to high conductivity measurements, a 4-electrode or inductive sensor may be required. Inductive sensors are recommended when measuring extremely high conductivity media, in the presence of suspended solids that may cause electrode scaling, in highly corrosive acids, and for use in large pipes or tanks.

[0051] The wireless flow sensor used is the YF-S201 water flow sensor, which consists of a small turbine wheel that rotates as water flows through it. A magnet is mounted on the turbine wheel, and a Hall effect sensor is located within the sensor. As the turbine wheel rotates, the magnet disturbs the magnetic field around the Hall effect sensor, generating electrical pulses. The frequency of these pulses is proportional to the water's flow rate.

[0052] How a wireless flow sensor works: A water flow sensor typically consists of a plastic valve body that rotates a turbine when water flows through it. A Hall effect sensor is attached to the turbine. The water flow rotates the turbine, changing the speed of the motor. This change is detected by the Hall effect sensor and converted into a pulse signal output, thus measuring the water flow rate.

[0053] It also includes a wireless handheld receiving device for switching the working mode of the pharmaceutical water equipment and configuring the node parameters, device address and device sleep time of the pharmaceutical water equipment. The wireless handheld receiving device communicates with the wireless temperature sensor, wireless flow rate sensor and wireless conductivity sensor in a wireless manner.

[0054] The wireless handheld receiving device includes a core processor, a power supply battery, a reset circuit electrically connected to the core processor and the power supply battery, a keyboard, an LCD display, a backlight circuit, a voltage detection circuit, an RF module, an external charging port, an external flash memory, and a USB interface.

[0055] The wireless handheld receiver features a "one-touch setup" function, facilitating the wakeup and sleep modes of numerous sensors. With a single command, multiple sensors can switch between different operating modes. The receiver's processing unit configures wireless sensor node parameters, device addresses, sleep time, and reads information such as the address and battery voltage of each node. Wireless communication eliminates the need for on-site disassembly, allowing for wireless parameter setting, portability, and flexibility, allowing for the adjustment of network configurations at any time.

[0056] Among them, the keyboard can complete digital input, function menu selection, and realize the configuration operation of sensor nodes;

[0057] The LCD display is mainly used to display network status, battery power, and read single sensor parameters;

[0058] The RF module uses the same module as the wireless sensor, which is used to realize the communication between the handheld device and the wireless controller and wireless sensor;

[0059] The voltage detection circuit is used to monitor the battery power and display the measured battery power on the LCD screen. The entire handheld device is powered by batteries.

[0060] The power supply battery is a lithium-ion secondary battery, which can be charged multiple times and reused through the external charging interface.

[0061] Furthermore, the selection of temperature-sensitive probes requires the following: By testing temperature probes with different component types, materials, packaging materials, and insulation materials, a sensor design with a dynamic response time that meets R&D requirements is selected. The rapid response technology design of the temperature probe includes selecting and testing different temperature measuring components to optimize the fastest response speed, designing a structure that reduces the mass of the temperature probe to minimize heat absorption and achieve thermal equilibrium as quickly as possible, and selecting a material with high thermal conductivity as the heat transfer medium for the temperature probe to increase heat transfer rate and ensure detection accuracy.

[0062] This device also ensures that the data detected by each temperature sensor can be effectively converted and transmitted. For data processing, a high-speed ADC (digital-to-analog converter) is paired with a central controller to achieve high-speed data acquisition circuit design and complete rapid data conversion and storage. The design and implementation of the data communication interface ensures stable data transmission in a sealed environment.

[0063] In addition, the error between the actual data and the original data is optimized by combining weighted arithmetic averaging and batch estimation with a fusion algorithm. The Globus criterion is used to eliminate abnormal data, reduce the error caused by the instrument itself, and improve the accuracy of the blood cell culture instrument calibration device.

[0064] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. The conductivity meter online comparison device installed on the pharmaceutical water equipment is characterized by: The pharmaceutical water equipment is connected to a sealed pipe through different joints, and the pharmaceutical water equipment includes: A wireless temperature sensor for real-time monitoring and display of the temperature of water in a sealed pipe; A wireless flow rate sensor for real-time monitoring and display of the flow rate of water in a sealed pipe; A wireless conductivity sensor for real-time monitoring and display of the conductivity value of water in a sealed pipe; It also includes a wireless handheld receiving device for switching the working mode of the pharmaceutical water equipment and configuring the node parameters, device address and device sleep time of the pharmaceutical water equipment. The wireless handheld receiving device communicates with the wireless temperature sensor, wireless flow rate sensor and wireless conductivity sensor in a wireless manner.

2. The conductivity meter online comparison device installed on pharmaceutical water equipment according to claim 1, characterized in that: The wireless temperature sensor includes a battery power supply unit, a main processor, a radio frequency processor electrically connected to the main processor, and a temperature sensitive head. The main processor and the radio frequency processor are both electrically connected to the battery power supply unit, and the radio frequency processor is connected to an antenna.

3. The conductivity meter online comparison device installed on pharmaceutical water equipment according to claim 2, characterized in that: The radio frequency processor includes a microprocessor, an on-chip bus, and a 2.4GHz transceiver. The main processor is connected to the on-chip bus via an ADC interface, a UART interface, an SPI interface, and a GPIO interface. The microprocessor is connected to the on-chip bus line.

4. The conductivity meter online comparison device installed on pharmaceutical water equipment according to claim 3, characterized in that: The 2.4GHz transceiver is connected to an antenna, a router is connected to the 2.4GHz transceiver, a protocol accelerator is connected to the router, and the protocol accelerator is electrically connected to an on-chip bus. The microprocessor is respectively connected to a electrically erasable programmable read-only memory, an internal memory, and a flash memory.

5. The online conductivity meter comparison device installed on pharmaceutical water equipment according to claim 4, characterized in that: The battery power supply unit includes a terminal JP7 and a power management chip U5. Pin 1 of the power management chip U5 is connected to a 12V power supply voltage and is connected to capacitors C60 and C71 arranged in parallel. Pin 3 of the power management chip U5 is connected to a resistor R89 ​​connected to a 12V power supply voltage. A resistor R80, a resistor R86, a capacitor C72, and an inductor L2 are connected between pins 4 and 8 of the power management chip U5. The connection terminals of the capacitor C72 and the inductor L2 are connected to resistors R78 and R90 connected in series and grounded, and resistors R79 and R93 connected in series and grounded. The connection terminals of the capacitor C72 and the resistor R79 are connected to capacitors C73 and C74 arranged in parallel. The diode D2 and the resistor R81 are connected in series to the connection terminals of the capacitors C73 and C74. One end of the resistor R81 is connected to pin 3 of the connection terminal JP7.

6. The conductivity meter online comparison device installed on pharmaceutical water equipment according to claim 1, characterized in that: The wireless handheld receiving device includes a core processor, a power supply battery, a reset circuit electrically connected to the core processor and the power supply battery, a keyboard, an LCD display, a backlight circuit, a voltage detection circuit, an RF module, an external charging port, an external flash memory, and a USB interface.

7. The conductivity meter online comparison device installed on pharmaceutical water equipment according to claim 1, characterized in that: The wireless conductivity sensor is selected from any one of an electrode-type conductivity sensor, an inductive conductivity sensor, and an ultrasonic conductivity sensor; and the wireless flow velocity sensor is a sensor based on the Hall effect.

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