CN112729371A - Calibration system for sensor and calibration method thereof - Google Patents
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Abstract
The invention discloses a calibration system and a calibration method for a sensor, wherein the calibration system comprises the sensor, a calibration device and a calibration device; the man-machine interaction device is electrically connected with the calibration equipment, and the calibration equipment is electrically connected with the sensor. The calibration system and the calibration method for the sensor are convenient to use, and the online calibration method suitable for different types of sensors is realized through the matching arrangement of the human-computer interaction device and the calibration equipment, so that the output consistency of the automobile sensor is ensured, and the quality of the produced automobile product is improved.
Description
Technical Field
The invention relates to the technical field of sensor calibration, in particular to a calibration system for a sensor and a calibration method thereof.
Background
The automobile sensor is a key component of an automobile electronic control system, is a main source of information of the automobile electronic control system, is a core component of a sensing layer and is distributed on the whole body of a vehicle. The automobile sensor can be used for accurately measuring and controlling various information such as temperature, pressure, position, rotating speed, acceleration, vibration and the like in real time. The key to measuring the level of modern premium car control systems is the number and level of its sensors. At present, dozens to hundreds of sensors are installed on a common household car, and the number of the sensors on a high-grade car can be more than two hundred. Although the demand of automobile sensors is large, the automobile sensor industry in China is not developed from the overall development level, and although the price advantage of the domestic sensors is obvious, certain gap still exists in quality compared with the domestic products.
Compared with the similar products abroad, the technical level and the product quality stability of the automobile sensor product are greatly different, and especially in the face of the characteristics of large working temperature range, strong vibration, large pressure change and the like of the automobile sensor, the automobile sensor needs to show the consistency performance under different working conditions. Due to errors in structural design, difference of parts, assembly process and the like, the output consistency of the automobile sensor cannot be ensured.
Based on the above situation, the invention provides a calibration system and a calibration method for a sensor, which can effectively solve the above problems.
Disclosure of Invention
The invention aims to provide a calibration system for a sensor and a calibration method thereof. The calibration system and the calibration method for the sensor are convenient to use, and the online calibration method suitable for different types of sensors is realized through the matching arrangement of the human-computer interaction device and the calibration equipment, so that the output consistency of the automobile sensor is ensured, and the quality of the produced automobile product is improved.
The invention is realized by the following technical scheme:
a calibration system for a sensor comprises the sensor, a calibration device and a control device, wherein the sensor comprises a human-computer interaction device and the calibration device; the man-machine interaction device is electrically connected with the calibration equipment, and the calibration equipment is electrically connected with the sensor.
The invention aims to provide a calibration system for a sensor and a calibration method thereof. The calibration system and the calibration method for the sensor are convenient to use, and the online calibration method suitable for different types of sensors is realized through the matching arrangement of the human-computer interaction device and the calibration equipment, so that the output consistency of the automobile sensor is ensured, and the quality of the produced automobile product is improved.
Preferably, the human-computer interaction device comprises a display screen, an input component, a power supply component and a host; the host is electrically connected with the display screen, the input component and the power supply component respectively.
Preferably, the calibration device comprises a power supply part, a calibration connecting port, a sensor output measuring part and a calibration host part; and the calibration host part is respectively and electrically connected with the power supply part, the calibration connecting port and the sensor output measuring part.
According to another aspect of the invention, a calibration method for a calibration system of a sensor is provided, which comprises a single-point calibration method, a two-point calibration method and a multi-point calibration method.
Preferably, the single-point calibration method comprises the following steps:
step S1: selecting a sensor type through an input component of the human-computer interaction device;
step S2: selecting a single-point calibration method;
step S3: the calibration host part establishes data communication with the sensor through the calibration connecting port and waits for the sensor to be connected successfully; if the connection fails, returning to the step S1, if the connection succeeds, entering the step S4;
step S4: the output value of the current sensor and the state information of the sensor are measured in real time through a sensor output measuring part of the calibration equipment, and the information obtained by the calibration equipment is transmitted to a human-computer interaction device for real-time display; if the reading fails, returning to the step S1, and if the reading succeeds, entering the step S5;
step S5: when the calibration equipment is used for the sensor to reach a calibration point B, sequentially writing a longitudinal coordinate value By and a slope value of the current point B according to the abscissa angle value Bx of the current point B, and judging whether the writing is successful or not if the read related parameters are consistent with the written values after the writing is finished; if the writing is successful, the calibration is ended, and if the writing is failed, the process returns to step S1.
Preferably, the two-point calibration method comprises the following steps:
step S1: selecting a sensor type through an input component of the human-computer interaction device;
step S2: selecting a two-point calibration method;
step S3: the calibration host part establishes data communication with the sensor through the calibration connecting port and waits for the sensor to be connected successfully; if the connection fails, returning to the step S1, if the connection succeeds, entering the step S4;
step S4: the output value of the current sensor and the state information of the sensor are measured in real time through a sensor output measuring part of the calibration equipment, and the information obtained by the calibration equipment is transmitted to a human-computer interaction device for real-time display; if the reading fails, returning to the step S1, and if the reading succeeds, entering the step S5;
step S5: when the calibration equipment is used for the sensor to reach a calibration point B, writing a longitudinal coordinate value By of the current point B according to the abscissa angle value Bx of the current point B, and judging whether the writing is successful or not if the read related parameters are consistent with the written values after the writing is finished; if the writing is successful, the step S6 is entered, and if the writing is failed, the step S1 is returned to;
step S6: when the calibration equipment is used for the sensor to reach the calibration point C, writing a longitudinal coordinate value Cy of the current point C according to the abscissa angle value Cx of the current point C, and judging whether the writing is successful or not if the read related parameters are consistent with the written values after the writing is finished; if the writing is successful, the calibration is ended, and if the writing is failed, the process returns to step S1.
Preferably, the multi-point calibration method comprises the following steps:
step S1: selecting a sensor type through an input component of the human-computer interaction device;
step S2: selecting a multipoint calibration method;
step S3: the calibration host part establishes data communication with the sensor through the calibration connecting port and waits for the sensor to be connected successfully; if the connection fails, returning to the step S1, if the connection succeeds, entering the step S4;
step S4: the output value of the current sensor and the state information of the sensor are measured in real time through a sensor output measuring part of the calibration equipment, and the information obtained by the calibration equipment is transmitted to a human-computer interaction device for real-time display; if the reading fails, returning to the step S1, and if the reading succeeds, entering the step S5;
step S5: when the calibration equipment is used for the sensor to reach a calibration point B, sequentially writing longitudinal coordinate values By of the current point B according to the abscissa angle value Bx of the current point B, and judging whether the writing is successful or not if the read related parameters are consistent with the written values after the writing is finished; if the writing is successful, the step S6 is entered, and if the writing is failed, the step S1 is returned to;
step S6: when the calibration equipment is used for the sensor to reach the calibration point C, writing a longitudinal coordinate value Cy of the current point C according to the abscissa angle value Cx of the current point C, and judging whether the writing is successful or not if the read related parameters are consistent with the written values after the writing is finished; if the writing is successful, the step S7 is entered, and if the writing is failed, the step S1 is returned to;
step S7: when the calibration equipment is used for the sensor to reach a calibration point D, writing a longitudinal coordinate value Dy of the current D point according to the abscissa angle value Dx of the current D point, and judging whether the writing is successful or not if the read related parameters are consistent with the written values after the writing is finished; if the writing is successful, the calibration is ended, and if the writing is failed, the process returns to step S1.
Compared with the prior art, the invention has the following advantages and beneficial effects:
the calibration system and the calibration method for the sensor are convenient to use, and the online calibration method suitable for different types of sensors is realized through the matching arrangement of the human-computer interaction device and the calibration equipment, so that the output consistency of the automobile sensor is ensured, and the quality of the produced automobile product is improved.
1. The modularized design scheme of the man-machine interaction, the calibration equipment and the sensor is adopted, so that the system can be flexibly combined, and the applicability and the expansion capability of the system are improved;
2. adopting a proper calibration mode aiming at different sensor types, different technical requirements and application occasions;
3. the difference of parts, assembly process and applicable environment can be corrected online through software, and the consistency and stability of output signals of the sensor are ensured;
4. the state of the current sensor can be read and written in real time in the calibration process, the sensor in the calibration process can be ensured to work well, and the state of the current sensor can be displayed in real time;
5. the calibration device can be flexibly adapted and is suitable for calibration processes of different types of sensors.
Drawings
FIG. 1 is a schematic block diagram of the present invention;
FIG. 2 is a schematic flow chart diagram of a single point calibration method according to the present invention;
FIG. 3 is a schematic flow chart diagram of the two-point calibration method of the present invention;
FIG. 4 is a schematic flow chart diagram of the multi-point calibration method of the present invention;
FIG. 5 is a broken-line schematic of sensor parameter data according to the present invention. (where the x-axis is the output angle and the y-axis is the output signal)
Detailed Description
In order that those skilled in the art will better understand the technical solutions of the present invention, the following description of the preferred embodiments of the present invention is provided in conjunction with specific examples, but it should be understood that the drawings are for illustrative purposes only and should not be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationships depicted in the drawings are for illustrative purposes only and are not to be construed as limiting the present patent.
Example 1:
as shown in fig. 1 to 5, a calibration system for a sensor includes a sensor 300, including a human-computer interaction device 100 and a calibration apparatus 200; the man-machine interaction device 100 is electrically connected with the calibration equipment 200, and the calibration equipment 200 is electrically connected with the sensor 300. The man-machine interaction device 100 and the calibration equipment 200 carry out information transmission, and the man-machine interaction device 100 can select the type and the calibration mode of a sensor and control the calibration process of the calibration equipment 200;
according to another aspect of the invention, a calibration method for a calibration system of a sensor is provided, which comprises a single-point calibration method, a two-point calibration method and a multi-point calibration method. The host computer 104 runs the human-computer interaction software, and the power supply part 103 supplies power needed by the human-computer interaction 100.
Example 2:
as shown in fig. 1 to 5, a calibration system for a sensor includes a sensor 300, including a human-computer interaction device 100 and a calibration apparatus 200; the man-machine interaction device 100 is electrically connected with the calibration equipment 200, and the calibration equipment 200 is electrically connected with the sensor 300. The man-machine interaction device 100 and the calibration equipment 200 carry out information transmission, and the man-machine interaction device 100 can select the type and the calibration mode of a sensor and control the calibration process of the calibration equipment 200;
further, in another embodiment, the human-computer interaction device 100 comprises a display screen 101, an input part 102, a power supply part 103 and a host 104; the host computer 104 is electrically connected to the display screen 101, the input part 102, and the power supply part 103, respectively.
The display screen 101 can display the state and type of the currently calibrated sensor, the input component 102 can select different sensor types and control the calibration process, and the power supply component 103 provides the required power supply for the human-computer interaction device 100; the host 104 runs human-computer interaction software and performs data transmission with the calibration equipment 200;
further, in another embodiment, the calibration apparatus 200 includes a power supply component 201, a calibration connection port 202, a sensor output measurement component 203, and a calibration host component 204; the calibration host part 204 is electrically connected with the power supply part 201, the calibration connection port 202 and the sensor output measurement part 203 respectively.
The power supply part 201 provides power supplies with different voltage levels for the calibration device 200, the calibration connection port 202 can be adapted to different types of sensors, the sensor output measurement part 203 can test and transmit the current state and parameters of the sensors, and the calibration host part 204 runs calibration software of the sensors to be tested.
According to another aspect of the invention, a calibration method for a calibration system of a sensor is provided, which comprises a single-point calibration method, a two-point calibration method and a multi-point calibration method. The host computer 104 runs the human-computer interaction software, and the power supply part 103 supplies power needed by the human-computer interaction 100.
Further, in another embodiment, the single point calibration method comprises the following steps:
after the sensor 300 is stably and reliably connected with the calibration connection port 202 in the calibration device 200,
step S1: selecting a sensor type through the input part 102 of the human-computer interaction device 100;
step S2: selecting a single-point calibration method; the single-point calibration mode is a mode for calibrating a specific point and the signal slope thereof when the sensor is in linear output.
Step S3: the calibration host part 204 establishes data communication with the sensor 300 through the calibration connection port 202 and waits for the sensor 300 to be successfully connected; if the connection fails, returning to the step S1, if the connection succeeds, entering the step S4;
step S4: the output value of the current sensor and the state information of the sensor are measured in real time through a sensor output measuring part 203 of the calibration equipment 200, and the information obtained by the calibration equipment 200 is transmitted to the human-computer interaction device 100 for real-time display; if the reading fails, returning to the step S1, and if the reading succeeds, entering the step S5;
step S5: when the calibration device 200 waits for the sensor 300 to reach the calibration point B, sequentially writing a longitudinal coordinate value By and a slope value of the current point B according to the abscissa angle value Bx of the current point B, and judging whether the writing is successful or not if the read related parameters are consistent with the written values after the writing is finished; if the writing is successful, the calibration is ended, and if the writing is failed, the process returns to step S1.
Further, in another embodiment, the two-point calibration method comprises the following steps:
step S1: selecting a sensor type through the input part 102 of the human-computer interaction device 100;
step S2: selecting a two-point calibration method; the two-point calibration mode is a mode in which calibration is performed at two specific points when linear output of the sensor is used.
Step S3: the calibration host part 204 establishes data communication with the sensor 300 through the calibration connection port 202 and waits for the sensor 300 to be successfully connected; if the connection fails, returning to the step S1, if the connection succeeds, entering the step S4;
step S4: the output value of the current sensor and the state information of the sensor are measured in real time through a sensor output measuring part 203 of the calibration equipment 200, and the information obtained by the calibration equipment 200 is transmitted to the human-computer interaction device 100 for real-time display; if the reading fails, returning to the step S1, and if the reading succeeds, entering the step S5;
step S5: when the calibration device 200 waits for the sensor 300 to reach the calibration point B, writing the longitudinal coordinate value By of the current point B according to the abscissa angle value Bx of the current point B, and judging whether the writing is successful or not if the read related parameters are consistent with the written values after the writing is finished; if the writing is successful, the step S6 is entered, and if the writing is failed, the step S1 is returned to;
step S6: when the calibration device 200 waits for the sensor 300 to reach the calibration point C, writing the ordinate value Cy of the current point C according to the abscissa angle value Cx of the current point C, and judging whether the writing is successful or not if the read related parameters are consistent with the written values after the writing is finished; if the writing is successful, the calibration is ended, and if the writing is failed, the process returns to step S1.
Further, in another embodiment, the multi-point calibration method comprises the following steps:
step S1: selecting a sensor type through the input part 102 of the human-computer interaction device 100;
step S2: selecting a multipoint calibration method; the multi-point calibration mode refers to a calibration mode which utilizes nonlinear output or linear output of the sensor but requires multiple points for correction.
Step S3: the calibration host part 204 establishes data communication with the sensor 300 through the calibration connection port 202 and waits for the sensor 300 to be successfully connected; if the connection fails, returning to the step S1, if the connection succeeds, entering the step S4;
step S4: the output value of the current sensor and the state information of the sensor are measured in real time through a sensor output measuring part 203 of the calibration equipment 200, and the information obtained by the calibration equipment 200 is transmitted to the human-computer interaction device 100 for real-time display; if the reading fails, returning to the step S1, and if the reading succeeds, entering the step S5;
step S5: when the calibration device 200 waits for the sensor 300 to reach the calibration point B, sequentially writing the longitudinal coordinate value By of the current point B according to the abscissa angle value Bx of the current point B, and judging whether the writing is successful or not if the read related parameters are consistent with the written values after the writing is finished; if the writing is successful, the step S6 is entered, and if the writing is failed, the step S1 is returned to;
step S6: when the calibration device 200 waits for the sensor 300 to reach the calibration point C, writing the ordinate value Cy of the current point C according to the abscissa angle value Cx of the current point C, and judging whether the writing is successful or not if the read related parameters are consistent with the written values after the writing is finished; if the writing is successful, the step S7 is entered, and if the writing is failed, the step S1 is returned to;
step S7: when the calibration device 200 waits for the sensor 300 to reach the calibration point D, writing a longitudinal coordinate value Dy of the current point D according to the abscissa angle value Dx of the current point D, and judging whether the writing is successful or not if the read related parameters are consistent with the written values after the writing is finished; if the writing is successful, the calibration is ended, and if the writing is failed, the process returns to step S1.
According to the description and the drawings of the present invention, a person skilled in the art can easily manufacture or use the calibration system for a sensor and the calibration method thereof of the present invention, and can produce the positive effects described in the present invention.
Unless otherwise specified, in the present invention, if there is an orientation or positional relationship indicated by terms of "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., based on the orientation or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, rather than to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore, the terms describing orientation or positional relationship in the present invention are for illustrative purposes only, and should not be construed as limiting the present patent, specific meanings of the above terms can be understood by those of ordinary skill in the art in light of the specific circumstances in conjunction with the accompanying drawings.
Unless expressly stated or limited otherwise, the terms "disposed," "connected," and "connected" are used broadly and encompass, for example, being fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all simple modifications and equivalent variations of the above embodiments according to the technical spirit of the present invention are included in the scope of the present invention.
Claims (7)
1. A calibration system for a sensor, comprising a sensor (300), characterized in that: the system comprises a man-machine interaction device (100) and a calibration device (200); the man-machine interaction device (100) is electrically connected with the calibration equipment (200), and the calibration equipment (200) is electrically connected with the sensor (300).
2. A calibration system for a sensor according to claim 1, characterized in that: the human-computer interaction device (100) comprises a display screen (101), an input component (102), a power supply component (103) and a host (104); the host (104) is electrically connected with the display screen (101), the input component (102) and the power supply component (103) respectively.
3. A calibration system for a sensor according to claim 1, characterized in that: the calibration equipment (200) comprises a power supply part (201), a calibration connecting port (202), a sensor output measuring part (203) and a calibration host part (204); the calibration host part (204) is electrically connected with the power supply part (201), the calibration connecting port (202) and the sensor output measuring part (203) respectively.
4. A calibration method for a calibration system for sensors according to any one of claims 1 to 3, characterized in that: the method comprises a single-point calibration method, a two-point calibration method and a multi-point calibration method.
5. Calibration method of a calibration system for sensors according to claim 4, characterized in that: the single-point calibration method comprises the following steps:
step S1: selecting a sensor type through an input component (102) of the human-computer interaction device (100);
step S2: selecting a single-point calibration method;
step S3: the calibration host part (204) establishes data communication with the sensor (300) through the calibration connecting port (202) and waits for the sensor (300) to be connected successfully; if the connection fails, returning to the step S1, if the connection succeeds, entering the step S4;
step S4: the output value of the current sensor and the state information of the sensor are measured in real time through a sensor output measuring part (203) of the calibration equipment (200), and the information obtained by the calibration equipment (200) is transmitted to the human-computer interaction device (100) to be displayed in real time; if the reading fails, returning to the step S1, and if the reading succeeds, entering the step S5;
step S5: when the calibration device (200) waits for the sensor (300) to reach the calibration point B, sequentially writing a longitudinal coordinate value By and a slope value of the current point B according to the abscissa angle value Bx of the current point B, and judging whether the writing is successful or not if the read related parameters are consistent with the written values after the writing is finished; if the writing is successful, the calibration is ended, and if the writing is failed, the process returns to step S1.
6. Calibration method of a calibration system for sensors according to claim 4, characterized in that: the two-point calibration method comprises the following steps:
step S1: selecting a sensor type through an input component (102) of the human-computer interaction device (100);
step S2: selecting a two-point calibration method;
step S3: the calibration host part (204) establishes data communication with the sensor (300) through the calibration connecting port (202) and waits for the sensor (300) to be connected successfully; if the connection fails, returning to the step S1, if the connection succeeds, entering the step S4;
step S4: the output value of the current sensor and the state information of the sensor are measured in real time through a sensor output measuring part (203) of the calibration equipment (200), and the information obtained by the calibration equipment (200) is transmitted to the human-computer interaction device (100) to be displayed in real time; if the reading fails, returning to the step S1, and if the reading succeeds, entering the step S5;
step S5: when the calibration device (200) waits for the sensor (300) to reach the calibration point B, writing a longitudinal coordinate value By of the current point B according to the abscissa angle value Bx of the current point B, and judging whether the writing is successful or not if the read related parameters are consistent with the written values after the writing is finished; if the writing is successful, the step S6 is entered, and if the writing is failed, the step S1 is returned to;
step S6: when the calibration device (200) waits for the sensor (300) to reach the calibration point C, writing a longitudinal coordinate value Cy of the current point C according to the abscissa angle value Cx of the current point C, and judging whether the writing is successful or not if the read related parameters are consistent with the written values after the writing is finished; if the writing is successful, the calibration is ended, and if the writing is failed, the process returns to step S1.
7. Calibration method of a calibration system for sensors according to claim 4, characterized in that: the multi-point calibration method comprises the following steps:
step S1: selecting a sensor type through an input component (102) of the human-computer interaction device (100);
step S2: selecting a multipoint calibration method;
step S3: the calibration host part (204) establishes data communication with the sensor (300) through the calibration connecting port (202) and waits for the sensor (300) to be connected successfully; if the connection fails, returning to the step S1, if the connection succeeds, entering the step S4;
step S4: the output value of the current sensor and the state information of the sensor are measured in real time through a sensor output measuring part (203) of the calibration equipment (200), and the information obtained by the calibration equipment (200) is transmitted to the human-computer interaction device (100) to be displayed in real time; if the reading fails, returning to the step S1, and if the reading succeeds, entering the step S5;
step S5: when a sensor (300) of the calibration equipment (200) reaches a calibration point B, sequentially writing longitudinal coordinate values By of the current point B according to the abscissa angle value Bx of the current point B, and judging whether writing is successful or not if reading related parameters are consistent with written values after writing is finished; if the writing is successful, the step S6 is entered, and if the writing is failed, the step S1 is returned to;
step S6: when the calibration device (200) waits for the sensor (300) to reach the calibration point C, writing a longitudinal coordinate value Cy of the current point C according to the abscissa angle value Cx of the current point C, and judging whether the writing is successful or not if the read related parameters are consistent with the written values after the writing is finished; if the writing is successful, the step S7 is entered, and if the writing is failed, the step S1 is returned to;
step S7: when the calibration device (200) waits for the sensor (300) to reach the calibration point D, writing a longitudinal coordinate value Dy of the current D point according to the abscissa angle value Dx of the current D point, and judging whether the writing is successful or not if the read related parameters are consistent with the written values after the writing is finished; if the writing is successful, the calibration is ended, and if the writing is failed, the process returns to step S1.
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| CN114791297A (en) * | 2022-06-28 | 2022-07-26 | 国汽智控(北京)科技有限公司 | Offline calibration processing method, device and equipment based on automatic driving vehicle |
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