Instrument for measuring water content in oil

Abstract

The utility model discloses a tester for water content in oil, relates to the field of oil product detection instruments, aims to solve the problems that remote monitoring is inconvenient, alarm information cannot be stored and the surface of a touch screen is easy to damage in the prior art, and adopts the technical scheme that a detection interface, a master interface and a slave interface of an RS485 interface type are adopted; the microprocessor is connected with the flash memory chip, and the front panel is hinged to the protective cover. The measurement interface is connected with the RS485 communication circuit, and the RS485 communication circuit is connected with the RS485 communication interface, so that data transmission and communication with other equipment can be realized, remote monitoring and data interaction are realized, and the compatibility and stability of data transmission are greatly improved; the microprocessor is connected with the alarm device and the flash memory chip, so that alarm information can be stored, and subsequent review is facilitated; furthermore, a protective cover is hinged to the front panel, the touch screen is covered with the protective cover, the touch screen can be protected when operation is not needed, and the service life of the touch screen is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of oil testing instruments, specifically an oil water content analyzer. Background Technology

[0002] Existing oil water content analyzers have many shortcomings, such as: limited communication functions, making it difficult to easily exchange data with other devices and conduct remote monitoring; the inability to store alarm information when it is triggered, making it inconvenient for subsequent review; and the exposed touch screen, which is susceptible to damage and reduced sensitivity due to splashed liquid corrosion and dust during long-term use. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the existing defects and provide an oil water content analyzer that can effectively solve the problems in the background art.

[0004] To achieve the above objectives, this utility model discloses an oil water content analyzer. The technical solution includes a housing with a front panel connected to it. The housing is equipped with a power interface, a measurement interface, and a touch screen. A microprocessor is housed within the housing and electrically connected to the measurement interface and the touch screen. An RS485 communication circuit, an alarm device, and a data transmission interface are located on the housing or the front panel. The RS485 communication circuit, the alarm device, and the data transmission interface are all electrically connected to the microprocessor. The microprocessor is also electrically connected to a flash memory chip. A second isolation module separates the RS485 communication circuit from the microprocessor. The RS485 communication circuit is electrically connected to the measurement interface and the master-slave interface. Both the measurement interface and the master-slave interface are RS485 interfaces. The RS485 communication circuit and the RS485 interface together form the RS485 communication module. A protective cover is hinged to the front panel. The protective cover corresponds to the position and size of the touchscreen. The hinge between the protective cover and the front panel is a multi-angle adjustment and buffer structure. A limit mechanism is located on the front panel, corresponding to the free end of the protective cover and matching its size. The RS485 communication module connected to the microprocessor enables data transmission and communication with other devices, and can be used for remote monitoring and data interaction. The RS485 communication function supports the standard Modbus communication protocol, allowing the measuring instrument to communicate seamlessly with a host computer or other intelligent devices, greatly improving the compatibility and stability of data transmission.

[0005] As a preferred embodiment of this invention, the multi-angle adjustment and buffering structure is a damping pivot, with its fixed end connected to the front panel and its rotating spindle connected to the protective cover. By adjusting the damping torque, the hinge can smoothly buffer during opening or closing and can be precisely positioned and stopped at any angle, effectively avoiding collisions and damage caused by the rapid opening and closing of the protective cover.

[0006] In a preferred embodiment of this invention, the limiting mechanism includes a limiting housing on the front panel. A limiting pin is slidably connected within the limiting housing, and a spring is press-fitted between the limiting pin and the limiting housing. The free end of the protective cover has a slot, and the limiting pin slides in contact with the slot. The limiting pin can be inserted into the slot on the front panel by being pushed out by the spring, thus positioning the protective cover after it is fastened.

[0007] In a preferred embodiment of this invention, the limiting housing has a sliding cavity, and one end of the sliding cavity near the protective cover is connected to the outside via a connecting port. The limiting pin and the connecting port are in slidable contact. The limiting pin can slide within the sliding cavity, allowing it to extend out of the connecting port.

[0008] In a preferred embodiment of this invention, the limiting pin has a T-shaped structure, including a pin body with a lever on its top surface; the top surface of the limiting housing has a lever groove, and the lever slides in the lever groove. The limiting pin can slide within the sliding cavity by moving the lever.

[0009] As a preferred embodiment of this utility model, the pin has sliders on both sides, the sliding cavity has grooves on both sides, the sliders slide in the grooves, and the spring is in the grooves and connected to the sliders.

[0010] As a preferred technical solution of this utility model, it also includes a power switch, the front end of which is electrically connected to the power interface, and the rear end of which is electrically connected to a switching power supply, a filter circuit and a first isolation module. The first isolation module is electrically connected to the second isolation module and the microprocessor.

[0011] As a preferred embodiment of this utility model, the data transmission interface is a USB interface, the microprocessor is electrically connected to a signal output circuit, the USB interface is electrically connected to the signal output circuit, and the USB interface is connected to an overcurrent protection chip and an ESD protection circuit, which can prevent electronic components from being damaged.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: By connecting the measurement interface to the RS485 communication circuit, and the RS485 communication circuit to the RS485 communication interface, data transmission and communication with other devices can be realized, thereby achieving remote monitoring and data interaction, which greatly improves the compatibility and stability of data transmission; by connecting the microprocessor to the alarm device and the flash memory chip, alarm information can be stored for subsequent review; furthermore, a protective cover is hinged on the front panel to cover the touch screen, which can protect the touch screen when it is not in use and extend its service life. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the limiting mechanism of this utility model;

[0015] Figure 3 This is a schematic diagram of the internal structure of the limiting mechanism of this utility model;

[0016] Figure 4 This is a schematic diagram of the limiting mechanism of this utility model in its limiting state;

[0017] Figure 5 This is a schematic diagram of the limiting pin structure of this utility model;

[0018] Figure 6 This is a circuit block diagram of the present invention.

[0019] In the diagram: 1. Housing; 2. Front panel; 3. Protective cover; 4. Power switch; 5. Alarm; 6. Hinge; 7. Slot; 8. Limiting mechanism; 801. Limiting housing; 802. Limiting pin; 8021. Pin body; 8022. Toggle block; 8023. Slider; 803. Spring. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example 1

[0021] like Figures 1 to 6As shown, this utility model discloses an oil water content analyzer. The technical solution adopted includes a housing 1, a front panel 2 mounted on the housing 1, and a microcontroller (HWD32F407LQFP144) control circuit inside. The peripheral circuits of the microcontroller control circuit include a power supply circuit, a signal output circuit, and an RS485 communication circuit. Figure 6 As shown, the power supply circuit includes an AC220V-DC12V switching power supply. The front end of the AC220V-DC12V switching power supply is connected to the power switch 4 and the power interface, while the rear end connects to the filter circuit and the first isolation module. The first isolation module is a DC / DC isolation module connected to the microcontroller control circuit. The RS485 communication circuit is connected to the second isolation module and then to the microcontroller control module. The first isolation module is also connected to the second isolation module. The RS485 communication circuit connects to the measurement interface and the master-slave interface. The master-slave interface is an RS485 interface. The measurement interface has a live wire, a neutral wire, and an RS485 communication line. The RS485 communication circuit is connected to the RS485 communication line, and the live wire and neutral wire are connected to the power supply circuit. The signal output circuit connects to the touchscreen, the alarm 5, and the USB data interface. A USB controller is also connected between the USB data interface and the peripheral circuit of the microcontroller control circuit. To protect the components, the USB data interface is designed with overcurrent protection and ESD protection. The overcurrent protection uses a SY6282ACC chip, which is connected between the VBUS pin of the USB data interface and the system power supply. Its enable pin is pulled down to ground through a 10kΩ resistor, and the overcurrent threshold is set to 2.5A±10%. The ESD protection uses a PRTR5V0U2X-ES dual diode array. Its I / O1 and I / O2 pins are connected to the D+ and D- signal lines of the USB data interface, respectively, and the GND pin is connected to the PCB main ground plane through a star-shaped grounding copper foil.

[0022] The power interface, USB data interface and measurement interface are all located on the casing 1, while the touch screen, power switch 4 and alarm 5 are located on the front panel 2. The alarm 5 is a combination of a buzzer and a red LED light, which can provide audible and visual alarm.

[0023] To store alarm information, the microcontroller's SPI communication pin is connected to an HWD25Q128AASESOP8 flash memory chip, with a storage capacity of at least 16 million records, meeting the requirements for long-term historical data storage. Areas within the flash memory chip are designated for storing alarm records. Each time an alarm occurs, the alarm time, the moisture content at the time of the alarm, and equipment status information are recorded in these storage areas. Users can export the alarm records using storage devices such as USB flash drives.

[0024] To obtain accurate time information, the microcontroller control circuit is also connected to a clock circuit module: this integrated RTC clock module provides precise time information and adds timestamps to each detection data and alarm record, ensuring the time traceability of the data. Furthermore, the RTC clock circuit is connected to a backup battery, ensuring accurate timekeeping even when the device is powered off, with a time accuracy error not exceeding ±80 seconds per month.

[0025] like Figure 1 As shown, a protective cover 3 is hinged to the front panel 2 to protect the touchscreen. To prevent excessive impact force on the front panel 2 when the protective cover 3 is closed, which could cause collision and damage to the device, a damping hinge is used at the hinge 6 between the front panel 2 and the protective cover 3. The fixed end of the damping hinge is connected to the front panel 2, and the main body of the hinge is connected to the protective cover 3. To maintain a stable closed state after the protective cover 3 is closed, a slot 7 is provided at the free end of the protective cover 3. A limiting mechanism 8 is provided on the front panel 2, such as... Figures 2 to 5 As shown, the limiting mechanism 8 includes a limiting housing 801, in which a sliding cavity is formed. There are slide tracks on both sides of the sliding cavity. The end near the protective cover 3 is connected to the outside through a connecting port. A groove is formed on the top surface, which connects the sliding cavity to the outside. A limiting pin 802 slides in contact with the sliding cavity. The limiting pin 802 is a T-shaped structure, including a pin body 8021. A lever 8022 is provided on the top surface of the pin body 8021. Slider blocks 8023 are provided on both sides of the pin body 8021. The lever 8022 slides in the groove, and the slider 8023 slides in contact with the groove. After the end of the slider 8023 slides out of the sliding cavity, it enters the slot 7 to limit the protective cover 3. In order to maintain the limiting state, a spring 803 is press-fitted between the slider 8023 and the end of the groove.

[0026] The working principle of this utility model:

[0027] This invention establishes a communication connection with the host computer via a master-slave interface, with this invention acting as the slave device. The measuring sensor is plugged into the measuring interface, the power interface is connected to a 220V AC power source, the power switch is turned on, and the sensor is placed in the sample for detection. Detection information is obtained by observing the host computer or touchscreen, and the detection results are stored in the flash memory chip. If the touch screen needs to be operated, toggle block 8022 to move limit pin 802 away from protective cover 3, spring 803 is compressed, limit pin 802 disengages from slot 7, rotate protective cover 3 to expose touch screen, release limit pin 802, operate touch screen, limit pin 802 resets under the action of spring 803, after operation, toggle limit pin 802 again to fasten protective cover 3, the damping shaft at hinge 6 can slow down the fastening speed of protective cover 3 to prevent impact, after fastening, release limit pin 802, pin body 8021 of limit pin 802 inserts into slot 7 to limit protective cover 3.

[0028] When an anomaly is detected, an audible and visual alarm is triggered by alarm 5, and the alarm information is stored in the flash memory chip for later viewing. The alarm information can be exported by inserting a USB flash drive into the USB data interface and operating the touch screen.

[0029] The circuits and mechanical connections involved in this utility model are common practices used by those skilled in the art, and technical inspiration can be obtained through a limited number of experiments. They are common knowledge.

[0030] Components not described in detail in this article are existing technologies.

[0031] Although 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 alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An oil water content analyzer, comprising a housing (1), a front panel (2) connected to the housing (1), a power interface, a measurement interface and a touch screen provided on the housing (1), a microprocessor inside the housing (1), the microprocessor being electrically connected to the measurement interface and the touch screen, characterized in that: The housing (1) or the front panel (2) has an RS485 communication circuit, an alarm device and a data transmission interface. The RS485 communication circuit, the alarm device and the data transmission interface are all electrically connected to the microprocessor. The microprocessor is also electrically connected to a flash memory chip. There is a second isolation module between the RS485 communication circuit and the microprocessor. The RS485 communication circuit is electrically connected to the measurement interface and the master-slave interface. The measurement interface and the master-slave interface are both RS485 interfaces. A protective cover (3) is hinged on the front panel (2). The protective cover (3) corresponds to the position and size of the touch screen. The hinge (6) between the protective cover (3) and the front panel (2) is a multi-angle adjustment and buffer structure. A limit mechanism (8) is on the front panel (2). It corresponds to the position and size of the free end of the protective cover (3).

2. The oil water content analyzer according to claim 1, characterized in that: The multi-angle adjustment and buffer structure is a damping shaft, whose fixed end is connected to the front panel (2), and whose rotating main shaft is connected to the protective cover (3).

3. The oil water content analyzer according to claim 1, characterized in that: The limiting mechanism (8) includes a limiting housing (801) on the front panel (2), a limiting pin (802) is slidably connected inside the limiting housing (801), and a spring (803) is press-fitted between the limiting pin (802) and the limiting housing (801); the free end of the protective cover (3) has a slot (7), and the limiting pin (802) and the slot (7) are in sliding contact.

4. The oil water content analyzer according to claim 3, characterized in that: The limiting housing (801) has a sliding cavity. One end of the sliding cavity near the protective cover (3) is connected to the outside through a connecting port. The limiting pin (802) and the connecting port slide in contact.

5. The oil water content analyzer according to claim 4, characterized in that: The limiting pin (802) has a T-shaped structure, including a pin body (8021) and a lever (8022) on the top surface of the pin body (8021); the limiting housing (801) has a lever groove on the top surface, and the lever (8022) slides in the lever groove.

6. The oil water content analyzer according to claim 5, characterized in that: The pin (8021) has sliders (8023) on both sides, and the sliding cavity has grooves on both sides. The sliders (8023) slide in the grooves, and the spring (803) is in the grooves and connected to the sliders (8023).

7. The oil water content analyzer according to claim 1, characterized in that: It also includes a power switch (4), the front end of which is electrically connected to the power interface, and the rear end is electrically connected to a switching power supply, a filter circuit and a first isolation module. The first isolation module is electrically connected to the second isolation module and the microprocessor.

8. The oil water content analyzer according to claim 1, characterized in that: The data transmission interface is a USB interface. The microprocessor is electrically connected to a signal output circuit. The USB interface is electrically connected to the signal output circuit. The USB interface is connected to an overcurrent protection chip and an ESD protection circuit.

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