CN110579310B - Sensor environment setting equipment and sensor parameter calibration system - Google Patents
Sensor environment setting equipment and sensor parameter calibration system Download PDFInfo
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- CN110579310B CN110579310B CN201810596433.6A CN201810596433A CN110579310B CN 110579310 B CN110579310 B CN 110579310B CN 201810596433 A CN201810596433 A CN 201810596433A CN 110579310 B CN110579310 B CN 110579310B
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- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L25/00—Testing or calibrating of apparatus for measuring force, torque, work, mechanical power, or mechanical efficiency
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Abstract
The invention discloses sensor environment setting equipment and a sensor parameter calibration system. The sensor environment setting equipment comprises a temperature control area, an objective table and a pressure regulating and connecting device; the objective table bears the sensor and is driven by the conveying device to move in the temperature control area; the pressure regulating and connecting device is located in the temperature control area, and when the objective table moves to the pressure regulating and connecting device, the pressure regulating and connecting device places the sensor carried by the objective table under a set air pressure and electrically connects the sensor to the sensor parameter monitoring and setting device outside the environment setting equipment. The sensor parameter calibration system adopts one or more sensor environment setting devices. According to the embodiment of the invention, independent sensor environment setting equipment can be independently provided for each temperature, and then a sensor parameter calibration system with a plurality of temperature intervals can be formed by flexibly combining a plurality of sensor environment setting equipment, so that the calibration effect of the sensor can be ensured, and the calibration efficiency of the sensor is improved.
Description
Technical Field
The invention relates to the field of sensor test calibration, in particular to sensor environment setting equipment and a sensor parameter calibration system.
Background
The sensor has wide application, and plays an important role in industrial and agricultural production and daily life. The accuracy of sensor data directly influences the efficiency, safety and other aspects of industrial and agricultural production, and also influences the convenience of daily life.
The existing pressure sensor calibration methods mainly include the following two methods:
(1) manual calibration mode
And (3) placing the pressure sensor in a pressure tank, then placing the pressure tank in a high-low temperature box, and leading out a signal of the pressure sensor through a wire. The pressure in the tank is controlled by an external pressure controller, and the pressure tank is heated or cooled by a temperature box, so that temperature and pressure compensation is realized.
The problem with the mode (1) is that: the whole process is operated manually, and at most dozens of calibration and detection can be performed at one time; the process time of welding signal lines, locking a sealed pressure tank, heating and cooling is long, and the efficiency of calibrating the pressure sensor is low.
(2) Calibration mode adopting semi-automatic calibration table
A pressure bin is arranged in the semi-automatic calibration table, and a heating device is arranged in the pressure bin. The opening or closing of the pressure bin is controlled in a semi-automatic mode, and therefore the pressure sensor product to be calibrated and measured can be conveniently taken and placed by an operator. And then the pressure sensor product in the pressure bin is heated through the temperature control unit.
The mode (2) has advantages over the mode (1) in that: signal wires do not need to be welded, the pressure cabin is sealed in an automatic mode, the cooling process is omitted, and only the heating process is carried out, so that the efficiency is greatly improved.
But the effect of calibration is reduced due to the mode (2) but the cooling process is eliminated.
Disclosure of Invention
In view of the above, the present invention provides a sensor environment setting device and a sensor parameter calibration system to improve calibration accuracy and calibration efficiency of a sensor.
The technical scheme of the application is realized as follows:
a sensor environment setting apparatus comprising:
a temperature control zone;
an object stage carrying the sensor and driven by a conveyor to move in the temperature controlled zone;
the pressure regulating and connecting device is located in the temperature control area, and when the objective table moves to the time of the pressure regulating and connecting device, the pressure regulating and connecting device is used for bearing the objective table, the sensor is arranged under the set air pressure and electrically connected to the sensor parameter monitoring and setting device outside the environment setting equipment.
Further, the objective table comprises an objective table body, a socket, a signal adapter plate and a sensor fixing device; wherein the content of the first and second substances,
the object stage body is provided with a first end face facing a first direction and a second end face facing a second direction, wherein the first direction and the second direction are opposite;
the socket and the signal adapter plate are arranged on the first end face, the sensor is arranged on one side, facing the first direction, of the socket and the signal adapter plate, the socket and the signal adapter plate are also provided with pad contacts, the pad contacts are positioned on one side, facing the second direction, of the socket and the signal adapter plate, and openings for the pad contacts to be electrically connected to the voltage regulating and connecting device are formed in the position, corresponding to the pad contacts, of the carrier body;
the sensor fixing device is arranged on the socket and the signal adapter plate and is connected with the socket and the signal adapter plate through hinges.
Further, the stage further includes:
the first sealing gasket is positioned between the socket and the signal adapter plate and the object stage body so as to seal the contact position between the socket and the signal adapter plate and the object stage body.
Further, the pressure regulating and connecting device includes:
the pressure bin is positioned on one side of the first direction of the objective table;
the lifting platform is positioned on one side of the object stage in the second direction; and
the jacking device is arranged on one side, back to the pressure cabin, of the lifting platform so as to control the lifting platform to move towards the pressure cabin or to be far away from the pressure cabin;
wherein, the elevating platform includes:
a lifting platform body;
the probe is arranged on one side, facing the first direction, of the lifting table body and is matched with the pad contact;
the wire socket is arranged on one side, facing the second direction, of the lifting platform body and is electrically connected to the probe, and the wire socket is electrically connected to a sensor parameter monitoring and setting device outside the environment setting equipment through a wire plug inserted in the wire socket; wherein the content of the first and second substances,
when the objective table moves to a position between the pressure bin and the lifting table, the lifting table presses the objective table to the pressure bin under the action of the jacking device, so that the sensor is sealed in the pressure bin, and the probe is electrically connected to the pad contact.
Further, the pressure bin is provided with a bin body, an opening is formed in the bin body towards the second direction, a pressure cavity is formed in the opening through the bin body, and the sensor is sealed in the pressure cavity after the objective table is pressed towards the pressure bin by the lifting table.
Further, a second sealing gasket is arranged between the opening and the object stage.
Further, the lifting platform is provided with a positioning pin;
the objective table is provided with a positioning hole matched with the positioning pin;
when the lifting platform presses the object stage to the pressure bin, the positioning pin penetrates into the positioning hole to fix the relative position between the object stage and the lifting platform.
A sensor parameter calibration system, comprising:
the sensor environment setting device comprises a parameter acquisition setting device and a sensor environment setting device according to any one of the above items; wherein the content of the first and second substances,
the parameter acquisition and setting device is electrically connected with the pressure regulating and connecting device in the sensor environment setting equipment so as to acquire parameters of the sensor in the sensor environment setting equipment, and the parameters of the sensor are calibrated and/or detected according to the temperature of the sensor applied by the temperature control area in the sensor environment setting equipment and the pressure value of the sensor applied by the pressure regulating and connecting device.
Further, the number of the sensor environment setting equipment is one;
in calibrating and/or detecting the parameters of the sensor:
calibrating and/or detecting parameters of the sensor at different temperatures by adjusting the temperature applied to the sensor by the temperature control region;
the pressure value applied to the sensor by the pressure regulating and connecting device is adjusted, so that the parameters of the sensor under different pressures are calibrated and/or detected.
Further, the number of the sensor environment setting devices is multiple;
driving, by the conveyor, a stage carrying the sensor to convey the sensor between a plurality of the sensor environment setting apparatuses;
the temperature of the temperature control area of each sensor environment setting device is different;
in calibrating and/or detecting the parameters of the sensor:
calibrating and/or detecting parameters of the sensor at different temperatures by communicating the sensor between different sensor environment setting devices;
the pressure value applied to the sensor by the pressure regulating and connecting device of each sensor environment setting device in the plurality of sensors is regulated, so that the parameters of the sensors under different pressures are calibrated and/or detected.
According to the scheme, the sensor environment setting equipment and the sensor parameter calibration system can provide independent sensor environment setting equipment for each temperature independently according to requirements, and further can be flexibly combined by a plurality of sensor environment setting equipment to form the sensor parameter calibration system with a plurality of temperature intervals, so that the automation degree of sensor parameter calibration is greatly improved, after the sensor is loaded, an object stage carrying the sensor can automatically enter each temperature interval, the data acquisition, analysis, calibration and detection are automatically completed, and the whole process can be free from manual intervention. The embodiment of the invention can simultaneously support high and low temperatures, and the ambient temperature of the sensor can be set within the range of-20 ℃ to 150 ℃. The sensor environment setting equipment and the sensor parameter calibration system can ensure the calibration effect of the sensor and improve the productivity, and are a set of system suitable for mass production.
Drawings
FIG. 1 is a schematic structural diagram of a sensor environment setup apparatus according to an embodiment of the present invention;
fig. 2 is a side view structural view of the stage 2 in the sensor environment setting apparatus of the embodiment of the present invention;
FIG. 3 is a side view of an embodiment of the present invention with the stage positioned between the pressure vessel and the lift table;
FIG. 4 is a schematic diagram of one embodiment of a sensor parameter calibration system of the present invention;
FIG. 5 is a schematic diagram of another embodiment of a sensor parameter calibration system of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and examples.
Fig. 1 is a schematic structural diagram of a sensor environment setting device according to an embodiment of the present invention, where the sensor environment setting device includes a temperature control area 1, an object stage 2, and a pressure regulating and connecting device 3. Wherein the object stage 2 is used for carrying the sensor and is driven by a conveyor to move in the temperature controlled zone 1. The pressure regulating and connecting device is located in the temperature control area 1, and when the objective table 2 moves to the pressure regulating and connecting device, the pressure regulating and connecting device places the sensor carried by the objective table 2 under a set air pressure and electrically connects the sensor to a sensor parameter monitoring and setting device located outside the environment setting equipment. Wherein, pressure regulating and connecting device mainly includes pressure vessel 301, elevating platform 302 and jacking device 303, and when objective table 2 moved to pressure vessel 301 and elevating platform 302, objective table 2 just in time was located between pressure vessel 301 and the elevating platform 302, later, elevating platform 302 pressed objective table 2 to pressure vessel 301 under the effect of jacking device 303 for the sensor that bears in objective table 2 seals in pressure vessel 301.
Fig. 2 shows a side view of the stage 2 of the present invention, and fig. 3 shows a side view of the stage when it is positioned between the pressure silo 301 and the elevating platform 302. Referring to fig. 2 and 3, the object stage 2 mainly includes an object stage body 201, a socket and signal adapter plate 202 and a sensor fixing device 203. The stage body 201 has a first end surface facing a first direction and a second end surface facing a second direction, wherein the first direction and the second direction are opposite. As a specific example, the first direction is a direction toward the pressure chamber, and the second direction is a direction toward the lift table.
The socket and signal adapter plate 202 is mounted on the first end face, the sensor is arranged on one side, facing the first direction, of the socket and signal adapter plate 202, and the sensor socket sensor is arranged on one side, facing the first direction, of the socket and signal adapter plate 202 and is arranged on the sensor socket. The socket and signal adapter board 202 further has a pad contact (not shown in the figure), the pad contact is located on one side of the socket and signal adapter board 202 facing the second direction, and the position of the stage body 201 corresponding to the pad contact is provided with an opening for electrically connecting the pad contact to the voltage regulating and connecting device. The sensor fixing device 203 is mounted on the socket and signal adapter plate 202 and is hinged to the socket and signal adapter plate 202. After the sensor is placed on the socket and signal adapter plate 202, the sensor fixing device 203 is fastened to the socket and signal adapter plate 202 to fix the sensor on the socket and signal adapter plate 202, so as to ensure effective circuit connection between the circuit in the sensor and the pad contact.
In the embodiment of the present invention, the stage body 201 is hermetically connected to the socket and signal adapter plate 202. Specifically, the stage body 201 and the socket and signal adapter plate 202 are hermetically connected by a first gasket, and the first gasket is located between the socket and signal adapter plate 202 and the stage body 201 to seal a contact portion between the socket and signal adapter plate 202 and the stage body 201.
As shown in fig. 1, fig. 2, fig. 3, fig. 4 and fig. 5, in the embodiment of the present invention, the pressure regulating and connecting device mainly includes a pressure chamber 301, a lifting table 302 and a jacking device 303. Wherein, the pressure chamber 301 is located at the first direction side of the object stage 2. The lift 302 is located on the second direction side of the stage 2. The jacking device 303 is installed on a side of the lifting platform 302 opposite to the pressure chamber 301 to control the lifting platform 302 to move towards the pressure chamber 301 or move away from the pressure chamber 301. The elevating platform 302 includes an elevating platform body 3021, a probe 3022, and a wire receptacle. The probe 3022 is mounted on one side of the stage body 3021 facing the first direction and is fitted to the pad contact. A wire receptacle (not shown) is mounted on the side of the platform body 3021 facing the second direction and is electrically connected to the probe 3022, and the wire receptacle is electrically connected to a sensor parameter monitoring and setting device located outside the environment setting apparatus through a wire plug plugged therein. When the stage 2 moves between the pressure chamber 301 and the lift table 302, the lift table 302 presses the stage 2 against the pressure chamber 301 by the lift device 303, so that the sensor is sealed in the pressure chamber 301 and the probes 3022 are electrically connected to the pad contacts. As a specific example, probe 3022 can be, for example, a Pogo Pin probe.
In the embodiment of the present invention, the pressure chamber 301 has a chamber body 3011, the chamber body 3011 forms an opening toward the second direction, a pressure cavity is formed inside the opening by the chamber body 3011, and the lifting platform 302 seals the sensor in the pressure cavity after pressing the object stage 2 to the pressure chamber 301.
Meanwhile, one end of the cabin 3011 is connected to a pressure cavity through a gas pipe 3012 to a gas pressure regulating device, such as a vacuum pumping device or a pressurizing device, so as to perform vacuum pumping or pressurizing operation on the sealed pressure cavity, thereby realizing adjustment of the pressure environment of the sensor in the pressure cavity.
In the embodiment of the invention, a second sealing gasket is arranged between the opening of the bin body 3011 and the object stage 2. The second gasket can be disposed on the stage body 201 and surrounds the socket and the signal adapter plate 202, and the second gasket is matched with the opening of the chamber 3011, so that after the stage 2 is pressed to the pressure chamber 301 by the lifting table 302, the opening of the pressure chamber 301 is just pressed against the second gasket, and meanwhile, since the second gasket is disposed around the socket and the signal adapter plate 202, the socket and the signal adapter plate 202 are just sealed together with the sensor disposed thereon in the pressure cavity.
In addition, in the embodiment of the present invention, the lifting platform 302 further has a positioning pin 3023, and the object stage 2 has a positioning hole matching with the positioning pin 3023, for example, the positioning hole is disposed on the object stage body 201. When the stage 302 presses the stage 2 against the pressure chamber 301, the positioning pin 3023 penetrates the positioning hole to fix the relative position between the stage 2 and the stage 302. As a specific example, the number of the positioning pins 3023 and the positioning holes matched therewith is plural, for example, four positioning pins 3023 and four positioning holes matched therewith.
In addition, in one embodiment, the four corners of the bottom end of the cabinet body of the sensor environment setting equipment can be provided with rollers so as to be convenient to move.
The embodiment of the invention also provides a sensor parameter calibration system which comprises a parameter acquisition setting device and sensor environment setting equipment. The sensor environment setting device in the above description is adopted as the sensor environment setting device. The parameter acquisition and setting device is electrically connected with a pressure regulating and connecting device in the sensor environment setting equipment, and specifically, the parameter acquisition and setting device is electrically connected with a wire socket in the pressure regulating and connecting device to acquire parameters of a sensor in the sensor environment setting equipment and calibrate and/or detect the parameters of the sensor according to the temperature applied to the sensor by the temperature control area 1 in the sensor environment setting equipment and the pressure applied to the sensor by the pressure regulating and connecting device.
FIG. 4 shows a schematic diagram of one embodiment of a sensor parameter calibration system. The embodiment comprises a parameter acquisition setting device A-1 and sensor environment setting equipment A-2, wherein the number of the sensor environment setting equipment A-2 is one. The parameter acquisition and setting device A-1 is electrically connected with a wire socket in the pressure regulating and connecting device in the sensor environment setting equipment A-2 to acquire parameters of the sensor in the sensor environment setting equipment A-2, and the parameters of the sensor are calibrated and/or detected according to the temperature applied to the sensor by the temperature control area in the sensor environment setting equipment A-2 and the pressure applied to the sensor by the pressure regulating and connecting device.
In calibrating and/or detecting the parameters of the sensor:
controlling the calibration and/or detection of parameters of the sensor at different temperatures by adjusting the temperature applied to the sensor by the temperature control area in the sensor environment setting device A-2;
the pressure value applied to the sensor by the pressure regulating and connecting device A-2 is adjusted, so that the parameters of the sensor under different pressures are controlled to be calibrated and/or detected.
In one embodiment, the sensor parameter calibration system includes a plurality of sensor environment setting devices. The driving of the stage carrying the sensor is driven by the conveyor to convey the sensor between the plurality of sensor environment setting devices. The temperature of the temperature control area of each sensor environment setting device is different. In calibrating and/or detecting the parameters of the sensor:
controlling the calibration and/or detection of parameters of the sensor at different temperatures by the communication of the sensor between different sensor environment setting devices;
the pressure value applied to the sensor by the pressure regulating and connecting device of each sensor environment setting device in the plurality of sensors is regulated, so that the parameters of the sensors under different pressures are controlled to be calibrated and/or detected.
Fig. 5 shows a schematic diagram of another embodiment of a sensor parameter calibration system, which is not shown in fig. 5, but which also includes a parameter acquisition and setting device. The number of the sensor environment setting devices in this embodiment is six, and the first sensor environment setting device B-1, the second sensor environment setting device B-2, the third sensor environment setting device B-3, the fourth sensor environment setting device B-4, the fifth sensor environment setting device B-5, and the sixth sensor environment setting device B-6 are respectively provided, and the transfer device further includes, for example, a first automatic transfer device C-1, a second automatic transfer device C-2, a third automatic transfer device C-3, a fourth automatic transfer device C-4, and a fifth automatic transfer device C-5. The first automatic conveyer C-1 is responsible for conveying the object stage loaded with the sensor from the outlet of the first sensor environment setting device B-1 to the inlet of the second sensor environment setting device B-2, the second automatic conveyer C-2 is responsible for conveying the object stage loaded with the sensor from the outlet of the second sensor environment setting device B-2 to the inlet of the third sensor environment setting device B-3, the third automatic conveyer C-3 is responsible for conveying the object stage loaded with the sensor from the outlet of the third sensor environment setting device B-3 to the inlet of the fourth sensor environment setting device B-4, the fourth automatic conveyer C-4 is responsible for conveying the object stage loaded with the sensor from the outlet of the fourth sensor environment setting device B-4 to the inlet of the fifth sensor environment setting device B-5, the fifth automatic transfer device C-5 is responsible for transferring the stage loaded with the sensor from the outlet of the fifth sensor environment setup apparatus B-5 to the inlet of the sixth sensor environment setup apparatus B-6. As another example, instead of using the conveying device shown in the drawing, the conveying device in each sensor environment setting device may be used to convey the stage by engaging the entrance and the exit between the sensor environment setting devices.
As a specific example, other transfer means may be provided at the exit of the sixth sensor environment setting apparatus B-6 to carry out the stage together with the sensor in which the parameter calibration and detection is completed.
In the embodiment of fig. 5, the first sensor environment setting device B-1, the second sensor environment setting device B-2, and the third sensor environment setting device B-3 provide the temperatures of the room temperature part, the low temperature part, and the high temperature part, respectively, and the calibration of the parameters of the sensors at the room temperature part, the low temperature part, and the high temperature part is performed in the first sensor environment setting device B-1, the second sensor environment setting device B-2, and the third sensor environment setting device B-3, respectively.
In the embodiment of fig. 5, the fourth sensor environment setting device B-4, the fifth sensor environment setting device B-5, and the sixth sensor environment setting device B-6 provide the temperatures of the room temperature part, the low temperature part, and the high temperature part, respectively, and the detection of the parameters of the sensors at the room temperature part, the low temperature part, and the high temperature part is performed in the fourth sensor environment setting device B-4, the fifth sensor environment setting device B-5, and the sixth sensor environment setting device B-6, respectively.
And the temperatures of the room-temperature portions set by the first sensor environment setting device B-1 and the fourth sensor environment setting device B-4 are the same, the temperatures of the low-temperature portions set by the second sensor environment setting device B-2 and the fifth sensor environment setting device B-5 are the same, and the temperatures of the high-temperature portions set by the third sensor environment setting device B-3 and the sixth sensor environment setting device B-6 are the same.
By adopting the sensor parameter calibration system of fig. 5, different environmental temperatures are set by utilizing a plurality of sensor environment setting devices respectively, so that the time required for increasing and/or reducing the temperature of the temperature control area in a single sensor environment setting device can be saved, and the efficiency of setting and correcting the sensor parameters can be greatly improved.
The above description is the main part of the embodiment of the present invention, and the following further describes the process of calibrating and detecting the sensor parameter by using the embodiment of the sensor environment setting apparatus and the sensor parameter calibration system of the present invention with reference to fig. 1 to 5, in combination with fig. 4 and 5, so as to further supplement the above description.
And (3) calibration process:
1) the object stage 2 carrying the sensor enters from the entrance (left end in fig. 1) of the sensor environment setting device;
2) a conveying device, such as a conveying chain, slowly passes the object stage 2 through a tunnel in the sensor environment setting device, the tunnel is located in the temperature control area 1, the temperature of the temperature control area 1 is controlled within a certain range by a temperature control device (such as a device capable of controlling temperature rise and/or temperature fall), and temperature rise (or temperature fall) of the sensor is realized in the conveying process;
3) a photoelectric sensor may be installed in the sensor environment setting to detect whether the stage 2 is transported to a position right below the pressure chamber 301, and when the photoelectric sensor detects that the stage 2 carrying the sensor is transported to a position right below the pressure chamber 301 (right side of fig. 1), the transportation and temperature rise (decrease) of the sensor are completed;
4) in the last step, a PLC (Programmable Logic Controller) installed in the sensor environment setting device or an external parameter acquisition setting device receives a signal after the objective table 2 is in place, controls the jacking device 303 to lift the lifting table 302 to jack the objective table 2, and hermetically places the sensor into the pressure bin 301;
5) the pressure in the pressure cabin is controlled by the gas pressure regulating equipment after the calibration board is communicated with the PLC and the signal of the completion of the previous step is received;
so far: providing the sensor with the pressure and temperature environment (one of temperature, pressure point) required for calibration;
6) after the air pressure in the pressure chamber 301 is stabilized, the calibration board communicates with the sensor in the object stage 2, reads the original data in the sensor, and stores the original data in an EEPROM (Electrically Erasable Programmable Read Only Memory), which can be disposed on the object stage 2.
7) If a plurality of pressure points exist at the same temperature, repeating the steps 5 and 6;
8) if the temperature zone is the last temperature zone in the calibration process, after data are collected, all data (including the front temperature zone) corresponding to the sensor are sent to an upper computer (such as a parameter acquisition and setting device), the upper computer analyzes and calculates calibration parameters and then sends the calibration parameters to a calibration board, and then the calibration board writes the calibration parameters into the sensor.
At this point, the calibration is completed, and the stage 2 is transported out of the temperature controlled section 1 in the following 9 th and 10 th steps.
9) After the collection of the temperature control area 1 is finished, the pressure of the pressure bin 301 is controlled to be equal to the atmospheric pressure through the gas pressure regulating device, and the calibration board is communicated with the PLC to inform the PLC of the completion of the collection;
10) the PLC controls the conveying device to convey the object stage 2 out of the temperature control area 1 and enter the next temperature control area 1. Meanwhile, the data of the temperature control area 1 can be transmitted to the next temperature control area 1 along with the objective table 2.
And (3) detection process:
similar to the calibration process, the differences are mainly:
point 1: the 6 th step of the calibration process is to read the original data, and the detection process is to read the output value after calibration;
and (2) point: and the 8 th step of the calibration process is to send the original data to an upper computer, calculate calibration parameters by the upper computer and write the calibration parameters into the sensor through a calibration board. In the detection process, all detection data are read, and whether the detection data are qualified or not is analyzed.
Principle of temperature and pressure control
Each temperature control area 1 is provided with a long tunnel (the specific length can be determined according to the change condition of the temperature influence of the sensor to be measured), the whole tunnel space is controlled in a certain temperature range by a temperature control system, the sensor slowly passes through the tunnel (the passing speed is adjustable), and the temperature rise (or the temperature drop) of the sensor is realized in the process. When the sensor reaches the lower part of the pressure chamber 301, the temperature is also raised (or lowered) to the target temperature, at this time, the sensor is placed in the pressure chamber 301 and sealed, and then the pressure of the pressure chamber is automatically (or manually) controlled by a calibration board by using a gas pressure regulating device, and data is collected.
The main composition and the working flow of the three temperature control zones shown in fig. 5:
as a specific example, the automatic transfer device has a length of, for example, 60cm, and functions to transfer the stage 2, which is equipped with the sensor in the previous temperature control area, to the next temperature control area in normal production. When equipment is in fault and/or maintained, the automatic conveying device can be moved out, and people can conveniently enter the space between the two temperature control areas to overhaul.
The three sensor environment setting devices in the first row (the first sensor environment setting device B-1, the second sensor environment setting device B-2, and the third sensor environment setting device B-3) function as calibration, and have three temperature zones: room temperature, low temperature, and high temperature. The third sensor environment setting device of the second row (the fourth sensor environment setting device B-4, the fifth sensor environment setting device B-5, and the sixth sensor environment setting device B-6) functions to detect, and also three temperature zones: room temperature, low temperature, and high temperature.
During calibration, the object stage loaded with the sensor firstly enters a room temperature area of a calibration part to reach the pressure chamber, then controls the air pressure in the pressure chamber and collects data. Depending on the setting, multiple pressure points may be collected per temperature controlled zone. For example, two pressure point data of 30Kpa (kilopascal) and 100Kpa are acquired in the room temperature and low temperature regions, and only 100Kpa is acquired in the high temperature region. After the sensor collects data in the room temperature area, the sensor reaches the low temperature area through the automatic transmission device to collect data. After the data is acquired in the low-temperature area, the data is acquired in the high-temperature area through the automatic conveying device, and after the data is acquired, all the acquired data of the three previous temperature areas are read by an upper computer (such as a parameter acquisition and setting device) for calculation, and the calculated calibration coefficients are written into the sensor. Then the temperature zone enters three temperature zones of the detection part, the calibration plate reads the output result after the calibration of the sensor in each temperature zone, the output result is compared with the standard value to judge whether the output result is suitable or not, the output result can be displayed on a set display screen, and the output result is screened after the sensor is conveyed out.
In an embodiment of the invention, the sensor is, for example, an air pressure sensor.
The sensor environment setting equipment and the sensor parameter calibration system can independently provide independent sensor environment setting equipment for each temperature according to requirements, and further can be flexibly combined by a plurality of sensor environment setting equipment to form the sensor parameter calibration system with a plurality of temperature sections, so that the automation degree of sensor parameter calibration is greatly improved, after loading, a carrier table with the sensor can automatically enter each temperature section, data acquisition, analysis, calibration and detection are automatically completed, and the whole process can be free of manual intervention. The embodiment of the invention can simultaneously support high and low temperatures, and the ambient temperature of the sensor can be set within the range of-20 ℃ to 150 ℃. The sensor environment setting equipment and the sensor parameter calibration system can ensure the calibration effect of the sensor and improve the productivity, and are a set of system suitable for mass production.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (8)
1. A sensor environment setting apparatus characterized by comprising:
a temperature control zone;
an object stage carrying the sensor and driven by a conveyor to move in the temperature controlled zone;
the pressure regulating and connecting device is positioned in the temperature control area, and when the objective table moves to the pressure regulating and connecting device, the pressure regulating and connecting device places the sensor carried by the objective table under a set air pressure and electrically connects the sensor to a sensor parameter monitoring and setting device positioned outside the environment setting equipment;
the object stage comprises an object stage body, a socket, a signal adapter plate and a sensor fixing device; wherein the content of the first and second substances,
the object stage body is provided with a first end face facing a first direction and a second end face facing a second direction, wherein the first direction and the second direction are opposite;
the socket and the signal adapter plate are arranged on the first end face, the sensor is arranged on one side, facing the first direction, of the socket and the signal adapter plate, the socket and the signal adapter plate are also provided with pad contacts, the pad contacts are positioned on one side, facing the second direction, of the socket and the signal adapter plate, and openings for the pad contacts to be electrically connected to the voltage regulating and connecting device are formed in the position, corresponding to the pad contacts, of the carrier body;
the sensor fixing device is mounted on the socket and the signal adapter plate and is hinged with the socket and the signal adapter plate, and when the sensor is placed on the socket and the signal adapter plate, the sensor fixing device is buckled with the socket and the signal adapter plate so as to fix the sensor on the socket and the signal adapter plate, so that effective circuit connection between a circuit in the sensor and the pad contact is ensured;
the pressure regulating and connecting device comprises:
the pressure bin is positioned on one side of the first direction of the objective table;
the lifting platform is positioned on one side of the object stage in the second direction; and
the jacking device is arranged on one side, back to the pressure cabin, of the lifting platform so as to control the lifting platform to move towards the pressure cabin or to be far away from the pressure cabin;
wherein, the elevating platform includes:
a lifting platform body;
the probe is arranged on one side, facing the first direction, of the lifting table body and is matched with the pad contact;
the wire socket is arranged on one side, facing the second direction, of the lifting platform body and is electrically connected to the probe, and the wire socket is electrically connected to a sensor parameter monitoring and setting device outside the environment setting equipment through a wire plug inserted in the wire socket; wherein the content of the first and second substances,
when the objective table moves to a position between the pressure bin and the lifting table, the lifting table presses the objective table to the pressure bin under the action of the jacking device, so that the sensor is sealed in the pressure bin, and the probe is electrically connected to the pad contact.
2. The sensor environment setting apparatus according to claim 1, wherein the stage further includes:
the first sealing gasket is positioned between the socket and the signal adapter plate and the object stage body so as to seal the contact position between the socket and the signal adapter plate and the object stage body.
3. The sensor environment setting apparatus according to claim 1, characterized in that:
the pressure bin is provided with a bin body, an opening is formed in the bin body towards the second direction, a pressure cavity is formed in the opening through the bin body, and the lifting platform presses the objective table to the pressure bin and then seals the sensor in the pressure cavity.
4. The sensor environment setting apparatus according to claim 3, characterized in that:
and a second sealing gasket is arranged between the opening and the object stage.
5. The sensor environment setting apparatus according to claim 1, characterized in that:
the lifting platform is provided with a positioning pin;
the objective table is provided with a positioning hole matched with the positioning pin;
when the lifting platform presses the object stage to the pressure bin, the positioning pin penetrates into the positioning hole to fix the relative position between the object stage and the lifting platform.
6. A sensor parameter calibration system, comprising:
a parameter acquisition setting device and a sensor environment setting apparatus according to any one of claims 1 to 5; wherein the content of the first and second substances,
the parameter acquisition and setting device is electrically connected with the pressure regulating and connecting device in the sensor environment setting equipment so as to acquire parameters of the sensor in the sensor environment setting equipment, and the parameters of the sensor are calibrated and/or detected according to the temperature of the sensor applied by the temperature control area in the sensor environment setting equipment and the pressure value of the sensor applied by the pressure regulating and connecting device.
7. The sensor parameter calibration system of claim 6, wherein:
the number of the sensor environment setting equipment is one;
in calibrating and/or detecting the parameters of the sensor:
calibrating and/or detecting parameters of the sensor at different temperatures by adjusting the temperature applied to the sensor by the temperature control region;
the pressure value applied to the sensor by the pressure regulating and connecting device is adjusted, so that the parameters of the sensor under different pressures are calibrated and/or detected.
8. The sensor parameter calibration system of claim 6, wherein:
the number of the sensor environment setting equipment is multiple;
driving, by the conveyor, a stage carrying the sensor to convey the sensor between a plurality of the sensor environment setting apparatuses;
the temperature of the temperature control area of each sensor environment setting device is different;
in calibrating and/or detecting the parameters of the sensor:
calibrating and/or detecting parameters of the sensor at different temperatures by communicating the sensor between different sensor environment setting devices;
the pressure value applied to the sensor by the pressure regulating and connecting device of each sensor environment setting device in the plurality of sensors is regulated, so that the parameters of the sensors under different pressures are calibrated and/or detected.
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