CN214372590U - Sensing system and calibration system of sensor - Google Patents
Sensing system and calibration system of sensor Download PDFInfo
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- CN214372590U CN214372590U CN202120851388.1U CN202120851388U CN214372590U CN 214372590 U CN214372590 U CN 214372590U CN 202120851388 U CN202120851388 U CN 202120851388U CN 214372590 U CN214372590 U CN 214372590U
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Abstract
The application discloses calibration system of sensor includes: the upper computer is used for sequentially carrying out calibration control on the N groups of sensor arrays by controlling the channel switching of the data acquisition card; the data acquisition card is connected with the upper computer; the system comprises N groups of sensor arrays, wherein each group of sensor arrays at least comprises K sensors, and the switch arrays corresponding to the group of sensor arrays are connected with a data acquisition card, so that the parallel calibration of each sensor in the group of sensor arrays is carried out when any group of sensor arrays are calibrated; n is a positive integer, and K is a positive integer not less than 2; and under the control of the upper computer, the calibration environment device provides a calibration environment for the N groups of sensor arrays. By applying the scheme of the application, the calibration of the sensor is effectively realized, and the calibration efficiency and the universality are improved. The application also provides a sensing system which has corresponding technical effects.
Description
Technical Field
The utility model relates to a detect technical field, especially relate to a calibration system of sensing system and sensor.
Background
The conventional sensor calibration system, taking a pressure sensor calibration system as an example, generally comprises a master control upper computer, a single-chip microcomputer communication board, a multi-channel switching module and a universal meter. The calibration procedure was as follows: the master control upper computer controls the single chip microcomputer to communicate with the pressure sensor conditioning chip which needs to be calibrated at present, and after the calibration is completed, the master control upper computer can connect the single chip microcomputer communication board with the next pressure sensor which needs to be calibrated by means of the multi-channel switching module, so that the calibration of each pressure sensor is completed in sequence.
Because the calibration system based on the single chip microcomputer is a serial system and can only communicate with one product at the same time to sequentially realize calibration, the calibration efficiency is low, and a single chip microcomputer communication board, a hardware circuit and a communication protocol in the calibration system are solidified, so that sensor conditioning chips of different manufacturers or different types cannot be shared, and the universality is poor.
In summary, how to effectively realize the calibration of the sensor and improve the calibration efficiency and the universality is a technical problem that needs to be solved urgently by those skilled in the art at present.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a calibration system of sensing system and sensor to realize the calibration of sensor effectively, improve calibration efficiency and commonality.
In order to solve the technical problem, the utility model provides a following technical scheme:
a calibration system for a sensor, comprising:
the upper computer is used for sequentially carrying out calibration control on the N groups of sensor arrays by controlling the channel switching of the data acquisition card;
the data acquisition card is connected with the upper computer;
the system comprises N groups of sensor arrays, wherein each group of sensor arrays at least comprises K sensors, and the switch arrays corresponding to the group of sensor arrays are connected with the data acquisition card, so that when any group of sensor arrays are calibrated, the sensors in the group of sensor arrays are calibrated in parallel; n is a positive integer, and K is a positive integer not less than 2;
and the calibration environment device provides a calibration environment for the N groups of sensor arrays under the control of the upper computer.
Preferably, the data acquisition card has N channel control ports, and when the ith channel control port is in a first state, the ith switch array corresponding to the ith sensor array is turned on to perform parallel calibration of each sensor in the ith sensor array; and when the ith channel control port is in a second state, the ith switch array corresponding to the ith sensor array is turned off, i is a positive integer and is more than or equal to 1 and less than or equal to N.
Preferably, each of the N sets of sensor arrays includes K sensors.
Preferably, the data acquisition card is provided with K data transmission ports;
for any 1 group of sensor arrays, the output ports of the 1 st to Kth sensors of the group of sensor arrays are connected with the 1 st to Kth data transmission ports of the data acquisition card sequentially through the 1 st to Kth data switch units in the switch arrays corresponding to the group of sensor arrays;
for any 1 group of sensor arrays, the power supply ports of the 1 st to Kth sensors of the group of sensor arrays are connected with the positive electrode of a first power supply through power supply switch units in the switch arrays corresponding to the group of sensor arrays;
for any 1 group of switch arrays, when the group of switch arrays is switched on, the power switch unit and each data switch unit in the group of switch arrays are switched on, and when the group of switch arrays is switched off, the power switch unit and each data switch unit in the group of switch arrays are switched off.
Preferably, the data acquisition card is further provided with K analog quantity transmission ports;
when any 1 group of sensor arrays are in a working mode and are in a first state at present, signals output by the output ports of the 1 st to Kth sensors of the group of sensor arrays are sequentially transmitted to the 1 st to Kth analog quantity transmission ports of the data acquisition card; when any 1 group of sensor arrays are in a working mode and are in a second state, the power supply voltages of the 1 st to Kth sensors of the group of sensor arrays are sequentially transmitted to the 1 st to Kth analog quantity transmission ports of the data acquisition card; when the working mode is adopted, the output data of the K sensors in the current working mode is acquired through the K analog quantity transmission ports and is output to the upper computer.
Preferably, when any 1 group of sensor arrays are in a calibration mode and are in a first state at present, signals output by output ports of 1 st to Kth sensors of the group of sensor arrays are sequentially transmitted to 1 st to Kth analog quantity transmission ports of the data acquisition card; when any 1 group of sensor arrays are in a working mode and are in a second state, the power supply voltages of the 1 st to Kth sensors of the group of sensor arrays are sequentially transmitted to the 1 st to Kth analog quantity transmission ports of the data acquisition card; when the calibration mode is carried out, the output data of the K sensors in the calibration mode is collected through the K analog quantity transmission ports and is output to the upper computer.
Preferably, the method further comprises the following steps: and the parallel driving circuit is connected with the data acquisition card and used for carrying out signal isolation and amplification.
Preferably, any one of the sensors is a sensor based on single line communication.
Preferably, any one of the sensors is a pressure sensor, or a humidity sensor, or a temperature sensor.
A sensing system comprising a calibration system for a sensor according to any of the preceding claims.
Use the embodiment of the utility model provides a technical scheme, the host computer passes through the channel switching of control data acquisition card, can carry out the calibration control of N group sensor array in proper order, and include K sensors in every group sensor array at least, be connected with data acquisition card through the switch array that this group sensor array corresponds, K is the positive integer that is not less than 2, this application is when carrying out the calibration of arbitrary a set of sensor array, carry out the parallel calibration of each sensor in this group sensor array, therefore, the scheme of this application is favorable to improving calibration efficiency. In addition, this application carries out calibration control through the host computer, and data acquisition card only plays the function that the passageway switches and data transfer, consequently, to different producers, the calibration of the sensor of different grade type, only need can conveniently adjust through host computer programming, has improved the commonality of this application scheme. To sum up, the scheme of this application has realized the calibration of sensor effectively, has improved calibration efficiency and commonality.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a calibration system of a sensor according to the present invention;
fig. 2 is a schematic diagram of a connection structure between a data acquisition card and a sensor array according to an embodiment of the present invention.
Detailed Description
The core of the utility model is to provide a calibration system of sensor, realized the calibration of sensor effectively, improved calibration efficiency and commonality.
In order to make the technical field better understand the solution of the present invention, the following detailed description of the present invention is provided with reference to the accompanying drawings and the detailed description. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a calibration system of a sensor according to the present invention, the calibration system of the sensor may include:
the upper computer 10 is used for sequentially carrying out calibration control on the N groups of sensor arrays 30 by controlling the channel switching of the data acquisition card 20;
a data acquisition card 20 connected with the upper computer 10;
the sensor calibration system comprises N groups of sensor arrays 30, wherein each group of sensor arrays 30 at least comprises K sensors, and the switch arrays 40 corresponding to the group of sensor arrays 30 are connected with the data acquisition card 20, so that when the calibration of any group of sensor arrays 30 is carried out, the parallel calibration of each sensor in the group of sensor arrays 30 is carried out; n is a positive integer, and K is a positive integer not less than 2;
and a calibration environment device 50 for providing a calibration environment for the N groups of sensor arrays 30 under the control of the upper computer 10.
Specifically, the upper computer 10 may have a calibration program running therein, so that calibration control of 1 arbitrary set of the sensor array 30 may be performed.
The data acquisition card 20 of the present application is a multifunctional data acquisition card 20, which can be inserted into the motherboard of the upper computer 10 to implement communication, measurement and control of channel switching. For calibration of different types of sensors of different manufacturers, the calibration can be conveniently adjusted only by programming through the upper computer 10, so that the universality of the scheme is improved.
The host computer 10 can switch through the channel of controlling data acquisition card 20, carry out the calibration control of N group sensor array 30 in proper order, that is to say, through the control to data acquisition card 20, host computer 10 can freely select which group in current calibration object specifically N group sensor array 30, in practical application, for example, host computer 10 can support the instruction of receiving the staff, thereby carry out the selection of the sensor array 30 that needs the calibration at present, if again, can be according to the serial number order of group 1 to group N, according to order automatic switch, the realization carries out the calibration control of N group sensor array 30 in proper order.
N groups of sensor arrays 30 and, each group of sensor arrays 30 includes at least K sensors, and generally speaking, the number of sensors included in each group of sensor arrays 30 is the same, i.e. in a specific embodiment of the present invention, each group of sensor arrays 30 in N groups of sensor arrays 30 includes K sensors. In the embodiment of fig. 2, any one of the sensor arrays 30 includes 16 sensors. Of course, in other situations, different numbers of sensors in different groups of sensor arrays 30 may be supported, for example, in one situation, the 1 st group of sensor arrays includes 16 sensors, and the 2 nd group of sensor arrays includes 8 sensors, which does not affect the implementation of the present invention.
For any 1 group of sensor arrays 30, the group of sensor arrays 30 may be connected to the data acquisition card 20 through the switch arrays 40 corresponding to the group of sensor arrays 30, so that when calibration of any group of sensor arrays 30 is performed, parallel calibration of each sensor in the group of sensor arrays 30 is performed, that is, when calibration of any 1 group of sensor arrays 30 is performed, calibration of each sensor in the group of sensor arrays 30 may be performed simultaneously, thereby improving calibration efficiency of the present application.
In one embodiment of the present invention, the data acquisition card 20 has N channel control ports, and when the ith channel control port is in the first state, the ith switch array 40 corresponding to the ith sensor array 30 is turned on to perform the parallel calibration of each sensor in the ith sensor array 30; when the ith channel control port is in the second state, the ith switch array 40 corresponding to the ith sensor array 30 is turned off, i is a positive integer and is greater than or equal to 1 and less than or equal to N.
The data acquisition card 20 may perform channel switching, and in this embodiment, the data acquisition card 20 may determine which group of the N groups of sensor arrays 30 is currently calibrated only by controlling the ports through the N channels, that is, in this embodiment, the port requirement on the data acquisition card 20 is less.
Specifically, when the ith channel control port is in the first state, the ith switch array 40 corresponding to the ith sensor array 30 is turned on, so as to perform parallel calibration of each sensor in the ith sensor array 30. Of course, if calibration of the ith sensor array 30 is not performed, the ith channel control port needs to be set to the second state, so that the ith switch array 40 corresponding to the ith sensor array 30 is turned off.
In the embodiment shown in fig. 2, the N channel control ports of the data acquisition card 20 are sequentially labeled as S1, S2 to SN, for example, when the first state is a port high state, and S1 is a high level, the 1 st switch array 40 corresponding to the 1 st sensor array 30 is turned on to perform parallel calibration of each sensor in the 1 st sensor array 30, it can be understood that S2 to SN are all low levels at this time. For another example, when S3 is high and S1 to SN are all low except S3, the 3 rd switch array 40 corresponding to the 3 rd sensor array 30 is turned on to perform parallel calibration of each sensor in the 3 rd sensor array 30.
Of course, the respective states of the channel control ports S1, S2 to SN of the data acquisition card 20 sequentially control the on/off states of the 1 st to nth switch arrays 40, and the specific circuit connection mode may be set according to actual needs, which can achieve the purpose.
When calibrating 1 arbitrary group of sensor arrays 30, in a specific embodiment of the present invention, the transmission of calibration data required for calibration can be realized through K ports, taking K sensors as an example in each group of sensor arrays 30 in N groups of sensor arrays 30, in a specific embodiment of the present invention, the data acquisition card 20 has K data transmission ports;
for any 1 group of sensor arrays 30, the output ports of the 1 st to Kth sensors of the group of sensor arrays 30 are connected with the 1 st to Kth data transmission ports of the data acquisition card 20 sequentially through the 1 st to Kth data switch units in the switch array 40 corresponding to the group of sensor arrays 30;
for any 1 group of sensor arrays 30, the power supply ports of the 1 st to the kth sensors of the group of sensor arrays 30 are all connected with the positive electrode of the first power supply through the power supply switch unit in the switch array 40 corresponding to the group of sensor arrays 30;
for any 1 group of switch arrays 40, when the group of switch arrays 40 is turned on, the power switch unit and each data switch unit in the group of switch arrays 40 are turned on, and when the group of switch arrays 40 is turned off, the power switch unit and each data switch unit in the group of switch arrays 40 are turned off.
In this embodiment, the data acquisition card 20 has K data transmission ports, which are typically digital transmission ports. In fig. 2, K is 16, and K data transmission ports in fig. 2 are sequentially denoted as IO1, IO2 to IO 16. Generally speaking, the sensors adopt OWI (One wire interface) communication mode, that is, any One sensor is a sensor based on single wire communication. Therefore, in the specific case of fig. 2, the data acquisition card 20 has K data transmission ports, specifically K pins. In other embodiments, such as where the transmission of the sensor has 2 or more lines, the aspects of the present application may be applied as well, in accordance with the principles of the present application.
In fig. 2, for group 1 sensor array 30, IO1 is connected to the output port of the 1 st sensor of group 1 sensor array 30 through the 1 st switch cell S1.1 in the 1 st switch array 40 corresponding to group 1 sensor array 30, i.e., to output terminal OWI1 of the 1 st sensor DUT1.1 of group 1 sensor array 30 in fig. 2, and IO2 is connected to output terminal OWI2 of the 2 nd sensor DUT1.2 of group 1 sensor array 30 through the 2 nd switch cell S1.2 in the 1 st switch array 40 corresponding to group 1 sensor array 30, and so on, and IO16 is connected to output terminal OWI16 of the 16 th sensor DUT1.16 of group 1 sensor array 30 through S1.16.
Accordingly, for the nth sensor array 30, the IO1 of the data acquisition card 20 is connected to the output port of the 1 st sensor of the nth sensor array 30, i.e., to the output terminal OWI1 of the 1 st sensor dutn.1 of the nth sensor array 30 in fig. 2, through the 1 st switch cell sn.1 of the nth switch array 40 corresponding to the nth sensor array 30, the IO2 is connected to the output terminal OWI2 of the 2 nd sensor dutn.2 of the nth sensor array 30 through sn.2, and so on, the IO16 is connected to the output terminal OWI16 of the 16 th sensor dutn.16 of the nth sensor array 30 through sn.16.
In addition, the power supply port of each sensor in any 1 sensor array 30 is connected to the positive electrode of the first power supply through the power supply switch unit in the switch array 40 corresponding to the sensor array 30, and in fig. 2, the power supply port of each sensor in the 1 st sensor array 30 is connected to the positive electrode of the first power supply through the power supply switch unit S1.0 in the 1 st switch array 40. Accordingly, the power port of each sensor in the nth sensor array 30 is connected to the positive electrode of the first power supply through the power switch unit sn.0 in the nth switch array 40.
Since the solution of the present application is to perform parallel calibration on each sensor in any 1 group of sensor arrays 30, for any 1 group of switch arrays 40, when the group of switch arrays 40 is turned on, both the power switch unit and each data switch unit in the group of switch arrays 40 need to be turned on. Accordingly, if the calibration of the set of sensor arrays 30 is not performed, the switch array 40 corresponding to the set of sensor arrays 30 needs to be turned off, that is, the power switch unit and each data switch unit in the set of switch arrays 40 are turned off. For example, in fig. 2, when the group 1 sensor array 30 is calibrated, the switch units S1.0, S1.1 to S1.16 are all controlled to be turned on by setting the level state of the channel control port S1 of the data acquisition card 20. In addition, specific implementation manners of the switch units S1.0, S1.1 to S1.16 may be various, for example, a relay having a single control loop and multiple controlled loops may be adopted, or for example, the switch units may be implemented based on a combination of switching transistors such as MOS transistors, as long as the on-off requirements of the present application can be met.
In one embodiment of the present invention, the data acquisition card 20 further has K analog transmission ports;
when any 1 group of sensor arrays 30 is in a working mode and is in a first state at present, signals output by the output ports of the 1 st to the Kth sensors of the group of sensor arrays 30 are sequentially transmitted to the 1 st to the Kth analog quantity transmission ports of the data acquisition card 20; when any 1 group of sensor arrays 30 is in a working mode and is in a second state, the power supply voltages of the 1 st to Kth sensors of the group of sensor arrays 30 are sequentially transmitted to the 1 st to Kth analog quantity transmission ports of the data acquisition card 20; in order to collect and output the output data of the K sensors currently in the working mode to the upper computer 10 through the K analog transmission ports in the working mode.
In this embodiment, K analog transmission ports are further provided in the data acquisition card 20, the analog output of K sensors of any 1 group of sensor array 30 and the power supply voltage of these K sensors can all be transmitted to the upper computer 10 through these K analog transmission ports, that is, the calibration system of the sensor of this embodiment can not only be used for calibration, after the calibration is completed, in the subsequent working process, the upper computer 10 can directly perform data acquisition of the working state of any 1 group of sensors based on the data acquisition card 20, so that the scheme of this application realizes the function multiplexing of sensor calibration and working data acquisition.
In addition, the working data of the sensor is usually reflected by the ratio of the analog quantity data of the output port of the sensor to the power supply voltage, so in this embodiment, in the working mode, not only the analog quantity output data but also the power supply voltage need to be collected through the K analog quantity transmission ports. Of course, if the type of the sensor is in the operating mode, the output is also the type of the digital data, and the upper computer 10 can collect the operating data directly based on the K data transmission ports, that is, in such an occasion, the scheme of the present application can still realize the function multiplexing of the sensor calibration and the operating data collection.
It should be further noted that the first state described in this embodiment means that in the first state, signals output from the output ports of the 1 st to K th sensors of the sensor array 30 currently in the working mode are sequentially transmitted to the 1 st to K th analog transmission ports of the data acquisition card 20, for example, when the 1 st group of sensor array 30 in fig. 2 is in the working mode, and when the first state is currently in the first state, the 1 st switch array 40 in fig. 2 is turned on, and the 1 st to K th analog transmission ports of the 1 st group of sensor array 30 need to be connected to the 1 st to K analog transmission ports of the data acquisition card 20, that is, to the IO17 to the IO32 in fig. 2. The second state described in this embodiment refers to that in the second state, the supply voltage terminals of the 1 st to K th sensors of the sensor array 30, which is currently in the working mode, need to be connected to the 1 st to K th analog transmission ports of the data acquisition card 20 in sequence.
The switching between the first state and the second state can be realized through the corresponding change-over switch module, the specific structure can be set and adjusted according to the requirements, and the switching function of the embodiment can be realized. The specific connection lines of the IO17 to IO32 to the power supply terminals of the respective sensors and the switching devices on the lines are not shown for the convenience of viewing in fig. 2 of the present application.
The specific duration of the first state and the second state may also be set as required, for example, the first state and the second state are switched according to a fixed period, and for example, the duration of the first state may be set to be longer, and the duration of the second state may be set to be shorter.
Further, in an embodiment of the present invention, when any 1 group of sensor arrays 30 is in the calibration mode and is currently in the first state, signals output from the output ports of the 1 st to K th sensors of the group of sensor arrays 30 are sequentially transmitted to the 1 st to K th analog transmission ports of the data acquisition card 20; when any 1 group of sensor arrays 30 is in a working mode and is in a second state, the power supply voltages of the 1 st to Kth sensors of the group of sensor arrays 30 are sequentially transmitted to the 1 st to Kth analog quantity transmission ports of the data acquisition card 20; in the calibration mode, the output data of the K sensors in the calibration mode is collected through the K analog transmission ports and output to the upper computer 10.
After the initialization is completed, when calibrating each sensor in any group of sensor arrays 30, the upper computer 10 may acquire, through the data acquisition card 20, the raw parameters of each sensor in the group of sensor arrays 30 before calibration, and then perform fitting calculation. Meanwhile, the upper computer 10 controls the calibration environment device 50 to provide a calibration environment for the set of sensor arrays 30, and after fitting, the parameters are transmitted back to each sensor, so as to complete calibration of each sensor in the set of sensor arrays 30.
In addition, in some cases, during calibration, in addition to the output of the sensor, the ratio of the output of the sensor to the power supply voltage needs to be acquired, so in this embodiment, K analog transmission ports of the data acquisition card 20 are directly utilized, and in the calibration mode, the output port voltages of the K sensors currently being calibrated are acquired through the K analog transmission ports, and the power supply voltages of the K sensors currently being calibrated are acquired, so that the ratio of the output port voltages to the power supply voltage can be obtained. For example, if the embodiment of fig. 2 is applied, it is necessary to provide corresponding switch modules for IO17 to IO32, so that in the calibration mode, the output voltage and the supply voltage of each sensor in the sensor array 30 currently being calibrated can be collected through IO17 to IO 32. Of course, in other embodiments, instead of multiplexing the K analog transmission ports of the data acquisition card 20, pins for acquiring the supply voltage of each sensor may be separately provided, which only requires a higher number of pins for the data acquisition card 20.
Furthermore, in a specific embodiment of the present invention, the present invention may further include: and a parallel driving circuit connected with the data acquisition card 20 and used for carrying out signal isolation and amplification.
For example, in fig. 2, by providing 16 parallel driver circuits 50 for isolated amplification of signals, damage to the acquisition card due to excessive sensor output voltage can be avoided.
In practical application, any one of the sensors of the present application may be a pressure sensor, or a humidity sensor, or a temperature sensor. Of course, other types of sensors are possible in other specific applications.
Use the embodiment of the utility model provides a technical scheme, host computer 10 switches through the passageway of control data acquisition card 20, can carry out N group sensor array 30's calibration control in proper order, and include K sensors in every group sensor array 30 at least, be connected with data acquisition card 20 through the switch array 40 that this group sensor array 30 corresponds, K is the positive integer that is not less than 2, this application is when carrying out arbitrary a set of sensor array 30's calibration, carry out the parallel calibration of each sensor in this group sensor array 30, therefore, the scheme of this application is favorable to improving calibration efficiency. In addition, the calibration control is carried out through the upper computer 10, and the data acquisition card 20 only has the functions of channel switching and data transmission, so that the calibration of sensors of different types in different manufacturers can be conveniently adjusted only by programming through the upper computer 10, and the universality of the scheme is improved. To sum up, the scheme of this application has realized the calibration of sensor effectively, has improved calibration efficiency and commonality.
Corresponding to the above embodiments of the calibration system for a sensor, the embodiments of the present invention further provide a sensing system, which may include the calibration system for a sensor described in any of the above embodiments, and may be referred to in correspondence with the above.
It is further noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, article, or apparatus that comprises the element.
The principle and the implementation of the present invention are explained herein by applying specific examples, and the above descriptions of the embodiments are only used to help understand the technical solution and the core idea of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.
Claims (10)
1. A system for calibrating a sensor, comprising:
the upper computer is used for sequentially carrying out calibration control on the N groups of sensor arrays by controlling the channel switching of the data acquisition card;
the data acquisition card is connected with the upper computer;
the system comprises N groups of sensor arrays, wherein each group of sensor arrays at least comprises K sensors, and the switch arrays corresponding to the group of sensor arrays are connected with the data acquisition card, so that when any group of sensor arrays are calibrated, the sensors in the group of sensor arrays are calibrated in parallel; n is a positive integer, and K is a positive integer not less than 2;
and the calibration environment device provides a calibration environment for the N groups of sensor arrays under the control of the upper computer.
2. The system for calibrating the sensor according to claim 1, wherein the data acquisition card has N channel control ports, and when the ith channel control port is in the first state, the ith switch array corresponding to the ith sensor array is turned on to perform parallel calibration of each sensor in the ith sensor array; and when the ith channel control port is in a second state, the ith switch array corresponding to the ith sensor array is turned off, i is a positive integer and is more than or equal to 1 and less than or equal to N.
3. The system of claim 1, wherein each of the N sets of sensor arrays includes K sensors.
4. The system for calibrating a sensor according to claim 3, wherein said data acquisition card has K data transmission ports;
for any 1 group of sensor arrays, the output ports of the 1 st to Kth sensors of the group of sensor arrays are connected with the 1 st to Kth data transmission ports of the data acquisition card sequentially through the 1 st to Kth data switch units in the switch arrays corresponding to the group of sensor arrays;
for any 1 group of sensor arrays, the power supply ports of the 1 st to Kth sensors of the group of sensor arrays are connected with the positive electrode of a first power supply through power supply switch units in the switch arrays corresponding to the group of sensor arrays;
for any 1 group of switch arrays, when the group of switch arrays is switched on, the power switch unit and each data switch unit in the group of switch arrays are switched on, and when the group of switch arrays is switched off, the power switch unit and each data switch unit in the group of switch arrays are switched off.
5. The system for calibrating a sensor according to claim 4, wherein said data acquisition card further has K analog transmission ports;
when any 1 group of sensor arrays are in a working mode and are in a first state at present, signals output by the output ports of the 1 st to Kth sensors of the group of sensor arrays are sequentially transmitted to the 1 st to Kth analog quantity transmission ports of the data acquisition card; when any 1 group of sensor arrays are in a working mode and are in a second state, the power supply voltages of the 1 st to Kth sensors of the group of sensor arrays are sequentially transmitted to the 1 st to Kth analog quantity transmission ports of the data acquisition card; when the working mode is adopted, the output data of the K sensors in the current working mode is acquired through the K analog quantity transmission ports and is output to the upper computer.
6. The system of claim 5, wherein when any 1 group of sensor arrays is in the calibration mode and is in the first state, the signals output by the output ports of the 1 st to Kth sensors of the group of sensor arrays are sequentially transmitted to the 1 st to Kth analog quantity transmission ports of the data acquisition card; when any 1 group of sensor arrays are in a working mode and are in a second state, the power supply voltages of the 1 st to Kth sensors of the group of sensor arrays are sequentially transmitted to the 1 st to Kth analog quantity transmission ports of the data acquisition card; when the calibration mode is carried out, the output data of the K sensors in the calibration mode is collected through the K analog quantity transmission ports and is output to the upper computer.
7. The calibration system for a sensor of claim 1, further comprising: and the parallel driving circuit is connected with the data acquisition card and used for carrying out signal isolation and amplification.
8. The system for calibrating a sensor according to any one of claims 1 to 7, wherein any one of the sensors is a sensor based on single line communication.
9. The system of claim 1, wherein any one of the sensors is a pressure sensor, a humidity sensor, or a temperature sensor.
10. A sensing system comprising a calibration system for a sensor according to any of claims 1 to 9.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117405287A (en) * | 2023-11-06 | 2024-01-16 | 无锡华阳科技有限公司 | Pressure sensor batch calibration system and implementation method |
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