CN112229566B - Bus pressure transmitter detection method and system - Google Patents

Abstract

The invention provides a detection method and a detection system of a multi-channel bus pressure transmitter, which can realize batch detection of the pressure transmitter, thereby improving the detection efficiency of the pressure transmitter. The detection method comprises the following steps: searching a plurality of detection channels one by one, determining the detection channel connected with the bus pressure transmitter, and acquiring or giving an identifier to the bus pressure transmitter; correspondingly storing the searched identification of each bus pressure transmitter and the serial number of the detection channel connected with the bus pressure transmitter; and controlling the pressure of the plurality of detection channels to be stabilized at least one pressure value, when the pressure is stabilized at a target pressure value, acquiring the output electro-physical quantity of each pressure transmitter according to the identification of each bus pressure transmitter and the serial number of the detection channel corresponding to the bus pressure transmitter, determining the detection value of each bus pressure transmitter corresponding to the target pressure value, and detecting each bus pressure transmitter according to the target pressure value and the detection value.

Description

Bus pressure transmitter detection method and system

Technical Field

The invention belongs to the field of pressure detection, and particularly relates to a detection method and a detection system of a bus pressure transmitter.

Background

The bus pressure transmitter has the characteristics of full digitality, embedded control function, multivariable measurement, good interoperability, high precision, high anti-interference capability, high-speed communication and the like, and is widely applied to industrial fields.

In order to detect whether the output of the bus pressure transmitter is accurate, related bus pressure transmitter detection systems mostly adopt communication and measurement modules of the built-in bus pressure transmitter, and the automatic detection function of a single bus pressure transmitter is realized.

As the number of detection points of the bus pressure transmitter is large, for units (such as power plants, measuring stations and the like) with large-batch bus pressure transmitter detection requirements, if a mode of detecting the bus pressure transmitter one by one is adopted, the efficiency is low.

Disclosure of Invention

The embodiment of the invention provides a detection method and a detection system of a bus pressure transmitter, which can detect the bus pressure transmitter in batches, thereby improving the detection efficiency of the bus pressure transmitter.

In a first aspect of the embodiments of the present invention, a detection method for a bus pressure transmitter is provided, where the detection method is used in a bus pressure transmitter detection system, the bus pressure transmitter detection system includes a pressure source with a pressure output port and a pressure connection table with a pressure pipeline, the pressure output port is connected to the pressure pipeline, the pressure connection table is provided with a plurality of pressure connectors and a plurality of detection channels corresponding to the pressure connectors, the pressure connectors are communicated with the pressure pipeline and used for connecting to the bus pressure transmitter, the detection channels are used for electrically connecting to the bus pressure transmitter, and the detection method includes the following steps:

s1, searching the plurality of detection channels one by one, determining the detection channel connected with the bus pressure transmitter, and determining the identity of each bus pressure transmitter in at least one searched bus pressure transmitter;

s2, correspondingly storing the identification of each bus pressure transmitter and the serial number of the detection channel connected with the bus pressure transmitter;

s3, controlling the pressure of the pressure pipeline to be stabilized at least one pressure value through the pressure source; when the pressure value is stabilized at a target pressure value, acquiring the output electro-physical quantity of each pressure transmitter according to the identification of each bus pressure transmitter and the number of a detection channel corresponding to the bus pressure transmitter, and determining the detection value of each bus pressure transmitter corresponding to the target pressure value, wherein the target pressure value is any one of the at least one pressure value;

and S4, detecting each bus pressure transmitter according to the target pressure value and the detection value corresponding to the target pressure value of each bus pressure transmitter.

With reference to the first aspect, in a first possible implementation manner, the S3 includes: when the pressure of the pressure pipeline is the target pressure value, switching detection channels one by one to obtain the output electro-physical quantity of each bus pressure transmitter, and determining the detection value corresponding to each bus pressure transmitter when the target pressure value is determined.

With reference to the first aspect, in a second possible implementation manner, the bus pressure transmitter detecting system is provided with a preheating power supply and a detecting power supply, and the S3 includes:

each bus pressure transmitter is connected to the preheating power supply;

and connecting each bus pressure transmitter to the detection power supply one by one, and acquiring the output electro-physical quantity of each bus pressure transmitter.

With reference to the first aspect, in a third possible implementation manner, the individually connecting each bus pressure transmitter to the detection power supply, and acquiring the output electrophysical quantity of each bus pressure transmitter includes:

the method comprises the steps of independently connecting a currently detected bus pressure transmitter to a detection power supply, disconnecting the currently detected bus pressure transmitter from the preheating power supply, supplying power to the bus pressure transmitter through the detection power supply, detecting the output electro-physical quantity of the currently detected bus pressure transmitter, and switching to the next bus pressure transmitter after the currently detected bus pressure transmitter is detected, so that the output electro-physical quantity of each bus pressure transmitter is obtained.

With reference to the first aspect, in a fourth possible implementation manner, the detection power supply and the preheating power supply output the same type and equivalent electrical physical quantity.

With reference to the first aspect, in a fifth possible implementation manner, the preheating power supply is disposed on the pressure connection station, and the detection power supply is independent of the pressure connection station.

With reference to the first aspect, in a sixth possible implementation manner, the pressure connection platform is provided with multiple sets of detection switches corresponding to the multiple detection channels, each set of detection switches corresponds to one detection channel, and each detection channel is controlled to switch between the preheating power supply and the detection power supply.

With reference to the first aspect, in a seventh possible implementation manner, each of the multiple sets of detection switches includes a first switch and a second switch, one end of the first switch is connected to one end of the second switch and is connected to a detection channel, the other end of the first switch is connected to the preheating power supply, and one end of the second switch is connected to the detection power supply; each said bus pressure transmitter being connected to said preheat power supply via a first switch of a set of sensing switches; each bus pressure transmitter is connected to the sensing power supply via a second diverter switch in a set of sensing switches.

With reference to the first aspect, in an eighth possible implementation manner, the S3 includes:

acquiring the identification of each bus pressure transmitter and the type of the output electro-physical quantity;

and receiving the output electro-physical quantity of each bus pressure transmitter at the target pressure value according to the identification of each bus pressure transmitter and the type of the output electro-physical quantity.

With reference to the first aspect, in a ninth possible implementation manner, the number of the at least one bus pressure transmitter is at least two.

In a second aspect of the embodiments of the present invention, a detection system for a bus pressure transmitter is provided, including: a pressure connection table, a pressure source and a detector; the pressure source pressure output port is connected with a pressure pipeline of the pressure connection table, the pressure connection table is provided with a plurality of pressure connectors and a plurality of detection channels corresponding to the pressure connectors, the pressure connectors are communicated with the pressure pipeline and used for being connected with a bus pressure transmitter, and the connection detection channels are used for being electrically connected with the bus pressure transmitter;

the pressure connection table is also provided with a preheating power supply for supplying power and preheating for the bus pressure transmitter; the detector is provided with an electro-physical quantity detection interface connected with an electro-physical quantity output end of the bus pressure transmitter;

the detector is configured to:

s1, searching the plurality of detection channels one by one, determining the detection channel connected with the bus pressure transmitter, and determining the identity of each bus pressure transmitter in at least one searched bus pressure transmitter;

s2, correspondingly storing the identification of each bus pressure transmitter and the serial number of the detection channel connected with the bus pressure transmitter;

s3, controlling the pressure of the pressure pipeline to be stabilized at least one pressure value through the pressure source; when the pressure value is stabilized at a target pressure value, acquiring the output electro-physical quantity of each pressure transmitter according to the identification of each bus pressure transmitter and the number of a detection channel corresponding to the bus pressure transmitter, and determining the detection value of each bus pressure transmitter corresponding to the target pressure value, wherein the target pressure value is any one of the at least one pressure value;

and S4, detecting each bus pressure transmitter according to the target pressure value and the detection value corresponding to the target pressure value of each bus pressure transmitter.

With reference to the second aspect, in a first possible implementation manner, the bus pressure transmitter detection system is provided with a preheating power supply and a detection power supply, and each bus pressure transmitter is connected to the preheating power supply;

the method comprises the steps of independently connecting a currently detected bus pressure transmitter to a detection power supply, disconnecting the currently detected bus pressure transmitter from the preheating power supply, supplying power to the bus pressure transmitter through the detection power supply, detecting the output electro-physical quantity of the currently detected bus pressure transmitter, and switching to the next bus pressure transmitter after the currently detected bus pressure transmitter is detected, so that the output electro-physical quantity of each bus pressure transmitter is obtained.

With reference to the second aspect, in a second possible implementation manner, the pressure connection platform is provided with multiple sets of detection switches corresponding to the multiple detection channels, each set of detection switches corresponds to one detection channel, and each detection channel is controlled to switch between the preheating power supply and the detection power supply.

With reference to the second aspect, in a third possible implementation manner, each of the multiple groups of detection switches includes a first switch and a second switch, one end of the first switch is connected to one end of the second switch and is connected to a detection channel, the other end of the first switch is connected to the preheating power supply, and one end of the second switch is connected to the detection power supply;

each bus pressure transmitter is connected with the preheating power supply through a first switch in a group of detection switches;

and each bus pressure transmitter is connected with the detection power supply through a second change-over switch in a group of detection switches.

Based on the detection method and the detection system of the bus pressure transmitter in the technical scheme, a plurality of detection channels are searched one by one, the detection channel connected with the bus pressure transmitter is determined, the identity of each bus pressure transmitter in at least one searched bus pressure transmitter is determined, the identity of each bus pressure transmitter is correspondingly stored with the number of the detection channel connected with the bus pressure transmitter, the pressure of a pressure pipeline is controlled to be stabilized at least one pressure value, when the identity of each bus pressure transmitter is stabilized at a target pressure value, the output electro-physical quantity of each pressure transmitter is obtained according to the identity of each bus pressure transmitter and the number of the detection channel corresponding to the bus pressure transmitter, the detection value corresponding to the target pressure value of each bus pressure transmitter is determined, and the detection value corresponding to the target pressure value of each bus pressure transmitter is determined according to the target pressure value and the detection value corresponding to the target pressure value of each bus pressure transmitter, each bus pressure transmitter is sensed. Therefore, batch detection of the bus pressure transmitters is realized, and compared with detection of a single pressure transmitter in the prior art, the detection efficiency of the bus pressure transmitters can be improved.

According to the detection method and the detection system of the bus pressure transmitter based on the technical scheme, in the process of detecting the bus pressure transmitters in batches, the rapid communication with the target bus pressure transmitter is realized according to the identity and the detection channel, the situation that the bus pressure transmitter needs to be reestablished to be connected every time of reconnection is avoided, the time consumed for connection is saved, the batch detection of the bus pressure transmitters is realized, and the detection efficiency is improved.

Drawings

FIG. 1A is a block diagram illustrating a sensing system of a bus pressure transmitter in accordance with an embodiment of the present invention.

Fig. 1B is a block diagram showing a bus pressure transmitter to which a detection system of the bus pressure transmitter according to the embodiment of the present invention is connected.

Fig. 2 is a schematic diagram showing connection of the detection switch according to the embodiment of the present invention.

FIG. 3 is a schematic diagram showing the relationship between pressure experienced by a bus pressure transmitter and current output by the bus pressure transmitter in accordance with an embodiment of the present invention.

FIG. 4 is an overall flow chart illustrating the use of the detection system of the bus pressure transmitter of an embodiment of the present invention to detect the accuracy of the detection of the bus pressure transmitter.

FIG. 5 is a flow chart showing a detection system of a bus pressure transmitter searching for a connected bus pressure transmitter and storing information thereof.

FIG. 6 is a flow chart showing a sensing system of the bus pressure transmitter performing a sensing.

FIG. 7A is a schematic diagram illustrating an embodiment of a sensing system of a bus pressure transmitter.

Fig. 7B is a schematic view of the press-connection station 20 of fig. 7A.

FIG. 8 is a graph of data from a multiplexed bus pressure transmitter detection system detecting a multiplexed bus pressure transmitter.

Description of the reference numerals

100: a detection system of the multi-channel bus pressure transmitter; 10: a pressure source; 11: an electro-physical quantity detection interface; 12: detecting a power supply; 13: a pressure output interface; 14: a detector; 20: a pressure connection table; 21. 21-1, 21-2, 21-3, 21-4: a detection channel; 22: preheating a power supply; 23: a pressure inlet; 24: a pressure connector; 25: a detection switch; 30. 30A, 30B, 30D: a bus pressure transmitter; 40: an operation unit.

Detailed Description

The preferred embodiments of the detection method and the detection system of the bus pressure transmitter according to the present invention will be described in detail below with reference to the accompanying drawings and embodiments. In the description of the drawings, the same reference numerals are given to the same drawings, and redundant description is omitted.

The embodiment of the invention provides a detection method of a bus pressure transmitter, which is used for a bus pressure transmitter detection system 100, wherein the bus pressure transmitter detection system 100 comprises a pressure source 10 provided with a pressure output port 13 and a pressure connection table 20 provided with a pressure pipeline, the pressure output port 13 is connected with the pressure pipeline, the pressure connection table 20 is provided with a plurality of pressure connectors 24 and a plurality of detection channels 21 corresponding to the plurality of pressure connectors, the plurality of pressure connectors 24 are communicated with the pressure pipeline and are used for being connected with a bus pressure transmitter 30, and the plurality of detection channels 21 are used for being electrically connected with the bus pressure transmitter 30. Wherein, a plurality of pressure connectors 24 can correspond to a plurality of detection channels 21 one by one. The method comprises the following steps:

s1, searching a plurality of detection channels one by one, determining the detection channel connected with the bus pressure transmitter, and determining the identity of each bus pressure transmitter in at least one searched bus pressure transmitter.

The identity of each bus pressure transmitter is unique and used for distinguishing different bus pressure transmitters, and the identity can be stored in the bus pressure transmitters or configured during searching.

And S2, correspondingly storing the identification of each bus pressure transmitter and the serial number of the detection channel connected with the bus pressure transmitter.

Specifically, a storage object (e.g., a storage table) may be established, and the identification of each bus pressure transmitter and the number of the detection channel to which the bus pressure transmitter is connected are stored in correspondence, for example, in the table.

S3, controlling the pressure of the pressure pipeline to be stabilized at least one pressure value through the pressure source; and when the pressure value is stabilized at the target pressure value, acquiring the output electro-physical quantity of each pressure transmitter according to the identification of each bus pressure transmitter and the number of the detection channel corresponding to the bus pressure transmitter, and determining the detection value corresponding to the target pressure value of each bus pressure transmitter, wherein the target pressure value is any one of at least one pressure value.

Specifically, according to the identification of each bus pressure transmitter and the number of the detection channel corresponding to the bus pressure transmitter, the currently detected bus pressure transmitter is determined, the output electro-physical quantity of the currently detected bus pressure transmitter is obtained, and the detection value corresponding to the target pressure value of the currently detected bus pressure transmitter is determined.

And S4, detecting each bus pressure transmitter according to the target pressure value and the detection value corresponding to the target pressure value of each bus pressure transmitter.

Specifically, there are various methods for detecting the bus pressure transmitter by using the detection value corresponding to the target pressure value, and the embodiment of the present invention is not limited.

The above steps S1 to S4 may be implemented by a detector, which may be integrated with the pressure source to form an intelligent pressure control device (e.g., a pressure controller), or may be independent of the pressure source.

The detection method of the bus pressure transmitter of the embodiment of the invention comprises the steps of searching a plurality of detection channels one by one, determining the detection channel connected with the bus pressure transmitter, determining the identity of each bus pressure transmitter in at least one searched bus pressure transmitter, correspondingly storing the identity of each bus pressure transmitter and the number of the detection channel connected with the bus pressure transmitter, controlling the pressure of a pressure pipeline to be stabilized at least one pressure value through a pressure source, obtaining the output electro-physical quantity of each pressure transmitter according to the identity of each bus pressure transmitter and the number of the detection channel corresponding to the bus pressure transmitter when the pressure is stabilized at a target pressure value, determining the detection value corresponding to the target pressure value of each bus pressure transmitter, and according to the target pressure value and the detection value corresponding to the target pressure value of each bus pressure transmitter, each bus pressure transmitter is sensed. Therefore, batch detection of the bus pressure transmitters is realized, and compared with detection of a single pressure transmitter in the prior art, the detection efficiency of the bus pressure transmitters can be improved.

According to the detection method of the bus pressure transmitter, in the process of detecting the bus pressure transmitters in batches, the rapid communication with the target bus pressure transmitter is realized according to the identity and the detection channel, the situation that the bus pressure transmitter needs to be re-connected every time of re-connection is avoided, the time consumption of connection is reduced, the batch detection of the bus pressure transmitter is realized, and the detection efficiency is improved.

In one embodiment, S3 includes: when the pressure of the pressure pipeline is a target pressure value, switching detection channels one by one to obtain the output electro-physical quantity of each bus pressure transmitter, and determining a detection value corresponding to each bus pressure transmitter when the target pressure value is determined.

In one embodiment, the bus pressure transmitter detection system is provided with a preheating power supply and a detection power supply, and S3 includes: each bus pressure transmitter is connected to a preheating power supply; and (4) connecting each bus pressure transmitter to a detection power supply one by one, and acquiring the output electro-physical quantity of each bus pressure transmitter.

In one embodiment, individually connecting each bus pressure transmitter to a detection power supply, and obtaining the output electro-physical quantity of each bus pressure transmitter comprises:

the method comprises the steps of independently connecting a currently detected bus pressure transmitter to a detection power supply, disconnecting the currently detected bus pressure transmitter from the preheating power supply, supplying power to the bus pressure transmitter through the detection power supply, detecting the output electro-physical quantity of the currently detected bus pressure transmitter, and switching to the next bus pressure transmitter after the currently detected bus pressure transmitter is detected, so that the output electro-physical quantity of each bus pressure transmitter is obtained.

In one embodiment, the detection power supply outputs the same type and value of the electrical physical quantity as the preheating power supply.

In one embodiment, the preheat power supply is disposed on the pressure connection station and the detection power supply is disposed on the detector.

In one embodiment, the pressure connection table is provided with a plurality of groups of detection switches corresponding to a plurality of detection channels, each group of detection switches corresponds to one detection channel, and each detection channel is controlled to be switched between the preheating power supply and the detection power supply.

In one embodiment, each of the plurality of sets of detection switches comprises a first switch and a second switch, wherein one end of the first switch is connected with one end of the second switch and is connected with a detection channel, the other end of the first switch is connected with a preheating power supply, and one end of the second switch is connected with the detection power supply; each bus pressure transmitter is connected with a preheating power supply through a first switch in a group of detection switches; and each bus pressure transmitter is connected with a detection power supply through a second change-over switch in a group of detection switches.

In one embodiment, S3 includes: acquiring the identification of each bus pressure transmitter and the type of the output electro-physical quantity; and receiving the output electro-physical quantity of each bus pressure transmitter at the target pressure value according to the identification of each bus pressure transmitter and the type of the output electro-physical quantity.

In one embodiment, the number of at least one bus pressure transmitter is at least two.

The embodiment of the invention provides a detection system of a bus pressure transmitter, which comprises: a pressure connection table, a pressure source and a detector;

the pressure output port of the pressure source is connected with a pressure pipeline of the pressure connection table, the pressure connection table is provided with a plurality of pressure connectors and a plurality of detection channels corresponding to the pressure connectors, the pressure connectors are communicated with the pressure pipeline and used for being connected with the bus pressure transmitter, and the connection detection channels are used for being electrically connected with the bus pressure transmitter; the pressure connection table is also provided with a preheating power supply for supplying power and preheating to the bus pressure transmitter; the detector is provided with an electro-physical quantity detection interface connected with an electro-physical quantity output end of the bus pressure transmitter;

the detector is configured to:

s1, searching a plurality of detection channels one by one, determining the detection channel connected with the bus pressure transmitter, and determining the identity of each bus pressure transmitter in at least one searched bus pressure transmitter;

s2, correspondingly storing the identification of each bus pressure transmitter and the serial number of the detection channel connected with the bus pressure transmitter;

s3, controlling the pressure of the pressure pipeline to be stabilized at least one pressure value through the pressure source; when the pressure value is stabilized at a target pressure value, acquiring the output electro-physical quantity of each pressure transmitter according to the identification of each bus pressure transmitter and the number of a detection channel corresponding to the bus pressure transmitter, and determining the detection value of each bus pressure transmitter corresponding to the target pressure value, wherein the target pressure value is any one of at least one pressure value;

and S4, detecting each bus pressure transmitter according to the target pressure value and the detection value corresponding to the target pressure value of each bus pressure transmitter.

In one embodiment, the bus pressure transmitter detection system is provided with a preheating power supply and a detection power supply, and each bus pressure transmitter is connected with the preheating power supply;

the method comprises the steps of independently connecting a currently detected bus pressure transmitter to a detection power supply, disconnecting the currently detected bus pressure transmitter from the preheating power supply, supplying power to the bus pressure transmitter through the detection power supply, detecting the output electro-physical quantity of the currently detected bus pressure transmitter, and switching to the next bus pressure transmitter after the currently detected bus pressure transmitter is detected, so that the output electro-physical quantity of each bus pressure transmitter is obtained.

In one embodiment, the pressure connection table is provided with a plurality of groups of detection switches corresponding to a plurality of detection channels, each group of detection switches corresponds to one detection channel, and each detection channel is controlled to be switched between the preheating power supply and the detection power supply.

In one embodiment, each of the plurality of sets of detection switches comprises a first switch and a second switch, wherein one end of the first switch is connected with one end of the second switch and is connected with a detection channel, the other end of the first switch is connected with a preheating power supply, and one end of the second switch is connected with the detection power supply;

each bus pressure transmitter is connected with a preheating power supply through a first switch in a group of detection switches;

and each bus pressure transmitter is connected with a detection power supply through a second change-over switch in a group of detection switches.

In the bus pressure transmitter detection system provided by the embodiment of the invention, the detector can be integrated with the pressure source to form an intelligent pressure control device (such as a pressure controller), and the detector can also be independent of the pressure source.

In an embodiment of the present invention, the detector may be integrated with the pressure source to form an intelligent pressure control device (e.g., a pressure controller), and the detector may be independent of the pressure source.

The detection system of the bus pressure transmitter can realize the detection method of the bus pressure transmitter in other embodiments of the invention, and the detailed realization process of the system can be realized by referring to the specific steps of other embodiments, which is not repeated herein.

The detection method and the system of the bus pressure transmitter of the embodiment of the invention search a plurality of detection channels one by one, determine the detection channel connected with the bus pressure transmitter, determine the identity of each bus pressure transmitter in at least one searched bus pressure transmitter, correspondingly store the identity of each bus pressure transmitter and the serial number of the detection channel connected with the bus pressure transmitter, control the pressure of a pressure pipeline to be stabilized at least one pressure value through a pressure source, when the identity of each bus pressure transmitter is stabilized at a target pressure value, obtain the output electro-physical quantity of each pressure transmitter according to the identity of each bus pressure transmitter and the serial number of the detection channel corresponding to the bus pressure transmitter, determine the detection value corresponding to the target pressure value of each bus pressure transmitter, and according to the target pressure value and the detection value corresponding to the target pressure value of each bus pressure transmitter, each bus pressure transmitter is sensed. Therefore, batch detection of the bus pressure transmitters is realized, and compared with detection of a single pressure transmitter in the prior art, the detection efficiency of the bus pressure transmitters can be improved.

The detection method and the system for the bus pressure transmitter can simultaneously detect a plurality of bus pressure transmitters, realize batch detection of the bus pressure transmitters and further improve the detection efficiency. When the bus pressure transmitter is connected, the quick communication can be realized according to the identity and the detection channel, and the situation that the bus pressure transmitter needs to be reestablished for connection every time of reconnection is avoided, so that the connection time is saved. The preheating power supply and the detection power supply are arranged in parallel, all the bus pressure transmitters to be detected are supplied with power uninterruptedly, and the bus pressure transmitters do not need to be preheated for multiple times in the detection process, so that the time for preheating the bus pressure transmitters again is saved.

FIG. 1A is a block diagram of a sensing system 100 of a bus pressure transmitter in one implementation of an embodiment of the invention. As shown in FIG. 1A, the sensing system 100 includes a pressure source 10, a pressure connection station 20, and a sensor for acquiring bus pressure transmitter sensing data.

The pressure output port of the pressure source 10 is connected to the pressure pipeline of the pressure connection table 20, and the pressure pipeline is connected to the plurality of pressure connectors 24, so as to realize the bus pressure transmitter 30 connected to the pressure connectors 24. The detector 14 is provided with an electrical physical quantity detection interface 11 for receiving an electrical signal output by a bus pressure transmitter 30 (shown in fig. 1B), the electrical physical quantity detection interface 11 is electrically connected with a detection channel 21 on the pressure connection table, and the detection channel 21 is connected with an output end of the bus pressure transmitter 30, so that the signal output by the bus pressure transmitter 30 is transmitted to the detector 14. A controller may be provided in sensor 14 to execute a control program to effect automatic sensing of bus pressure transmitter 30.

In particular, the detection channel 21 may be an electrical connection port, such as an air interface, or the like. The detection channel 21 is electrically connected to a bus pressure transmitter connected to the pressure connection station 20, and supplies power to the bus pressure transmitter 30 and obtains an output signal of the bus pressure transmitter 30.

The pressure connection table 20 is provided with a plurality of pressure connectors 24, a plurality of detection channels 21 corresponding to the pressure connectors 24, a preheating power supply 22 and a pressure inlet 23. The preheating power supply 22 supplies power to a bus pressure transmitter 30 connected to the pressure connector 24 through the detection channel 21 to preheat the bus pressure transmitter, and the pressure inlet 23 is connected with the pressure output interface 13 of the pressure source 10.

The pressure connection station 20 is electrically connected with the bus pressure transmitter 30 through the detection channel 21, and each bus pressure transmitter 30 butted on the pressure connection head 24 is powered. The detection channel 21 is electrically connected to the electrical physical quantity detection interface 11, and transmits an electrical signal output from the bus pressure transmitter 30 to the detector 14 via the electrical physical quantity detection interface 11. That is, the sensing channel 21 is used to electrically connect the bus pressure transmitter 30 mounted on the pressure connection block 20.

For example, the pressure connection stage 20 shown in fig. 1A is provided with 4 detection channels 21, which constitute a 4-way detection system. It should be understood that the number of detection channels 21 in other embodiments is not limited to 4, and may be other numbers greater than or equal to 2, such as 2, 6, 8, etc.

A detection power supply 12 provided in the detector 14 and a preheating power supply 22 provided in the pressure connection station 20 are connected in parallel for supplying power to a bus pressure transmitter 30 to be detected. The preheating power supply 22 outputs the same type and equivalent of the electric physical quantity as the detection power supply 12. For example, when the bus pressure transmitter 30 outputs a current of 4mA-20mA at a DC voltage of 24V, the detection power supply 12 and the preheating power supply 22 are DC 24V power supplies.

The detection power supply 12 and the preheating power supply 22 are connected in parallel and are connected to each detection channel 21 one by one through a switch, a switch is arranged between the detection channel 21 and the detection power supply 12, a switch is arranged between the detection channel 21 and the preheating power supply 22, and the detector 14 or the pressure connection table 20 controls the on-off cooperation of the switches to realize the switching between the detection power supply 12 and the preheating power supply 22.

Specifically, as shown in fig. 2, the pressure connection platform is provided with a plurality of sets of detection switches 25 corresponding to the plurality of detection channels 21, the detection switches 25 may be integrated into the pressure connection platform 20, each set of detection switches 25 corresponds to one detection channel 21, and each detection channel 21 is controlled to switch between the preheating power supply 22 and the detection power supply 12.

Each detection switch 25 of the multiple groups of detection switches 25 comprises a first switch and a second switch, one end of the first switch is connected with one end of the second switch and is connected with a detection channel 21, the other end of the first switch is connected with the preheating power supply 22, and one end of the second switch is connected with the detection power supply 12; each of said bus pressure transmitters 30 is connected to said preheating power supply 22 via a first switch of a set of detection switches 25; each bus pressure transmitter 30 is connected to the sensing power supply 12 via a second switch of a set of sensing switches 25.

The power switching is realized by the embodiment of the invention in such a way that each bus pressure transmitter 30 is connected with the preheating power supply 22, the currently detected bus pressure transmitter 30 is connected with the detection power supply 12, the currently detected bus pressure transmitter 30 is disconnected with the preheating power supply 22 after the detection power supply 12 is switched on, the currently detected bus pressure transmitter 30 is supplied with power by the detection power supply 12, and the output electro-physical quantity is detected to determine the detection value. The currently detected bus pressure transmitter 30 is detected and switched to the next bus pressure transmitter 30, so that the detected value of each bus pressure transmitter is obtained.

In a specific embodiment, the bus pressure transmitter 30 to be tested is connected to the pressure connection station 20, each detection channel 21 is connected to the preheating power supply 22, and all the bus pressure transmitters 30 to be tested connected to the pressure connection station 20 are preheated by the preheating power supply 22. During detection, after one current bus pressure transmitter 30 to be detected is connected to the detection power supply 12 through the change-over switch 14, the connection between the bus pressure transmitter 30 and the preheating power supply 22 is disconnected, the detection power supply 12 supplies power to the bus pressure transmitter 30 and obtains a detection value of the bus pressure transmitter 30, after the bus pressure transmitter 30 is obtained, the bus pressure transmitter 30 is connected to the preheating power supply 22 through the change-over switch 14, the connection between the bus pressure transmitter 30 and the detection power supply 12 is disconnected, the next bus pressure transmitter 30 is switched to be detected, and the next bus pressure transmitter 30 detection value is obtained by applying the switching mode until all the bus pressure transmitters 30 are detected.

In this embodiment, while testing a single bus pressure transmitter 30, other bus pressure transmitters 30 not connected to the test power supply 12 remain connected to the preheat power supply 22. This can save time for warming up bus pressure transmitter 30 when detecting a switching pressure target value described later.

In the embodiment of the present invention, bus pressure transmitter 30 can output different electrical physical quantities (current or voltage) according to the measured pressure. FIG. 3 shows an example of the relationship between the pressure experienced by bus pressure transmitter 30 and the current output, where bus pressure transmitter 30 in FIG. 3 ranges from 10MPa with a 24V input voltage outputting a 4mA-20mA current. In the normal state, when the pressure supplied to bus pressure transmitter 30 is 0MPa, it should output 4mA current, and when the pressure supplied to bus pressure transmitter 30 is 10MPa, it should output 20mA current. It is determined whether the accuracy of bus pressure transmitter 30 meets the requirements by sensing the output current of bus pressure transmitter 30.

The following description will be given taking an example of simultaneously detecting a plurality of bus pressure transmitters 30 having the same specification. It should be understood that the bus pressure transmitter detection system according to the embodiment of the present invention may also be configured to detect bus pressure transmitters with different specifications (for example, different ranges), and when detecting bus pressure transmitters with different specifications, obtain a detection value of each bus pressure transmitter according to the range and the output of each bus pressure transmitter. It should also be understood that while embodiments of the present invention prefer to test multiple bus pressure transmitters in batches, embodiments of the present invention may also test only one bus pressure transmitter.

In the existing bus pressure transmitter detection system, a single detection pressure transmitter needs to be preheated every time a pressure transmitter to be detected is replaced. The detection system of the bus pressure transmitter provided by the embodiment of the invention can detect a plurality of bus pressure transmitters in batch, preheat the plurality of bus pressure transmitters simultaneously, switch the detection power supply 15 and the preheating power supply 25 to supply power to the bus pressure transmitters, keep all the bus pressure transmitters to be detected preheated in the detection process, and switch among the plurality of bus pressure transmitters to be detected to realize batch detection of the plurality of bus pressure transmitters to be detected.

FIG. 1B shows a detection system 100 of a bus pressure transmitter coupled to bus pressure transmitter 30.

The flow of bus pressure transmitter 30 detection by detection system 100 of the bus pressure transmitter according to the embodiment of the present invention is shown in fig. 4. The steps shown in fig. 4 may be implemented by a detector, which may be integrated with the pressure source 10 or may be independent of the pressure source 10, and the embodiment of the present invention is not limited thereto. The process illustrated in FIG. 4 is preferably applicable to batch testing of multiple bus pressure transmitters 30, although testing of a single bus pressure transmitter 30 is equally possible. The present embodiment is described by taking a batch test of a plurality of bus pressure transmitters 30 as an example.

When the plurality of bus pressure transmitters 30 are to be detected in a batch manner, the plurality of bus pressure transmitters 30 are pressure-connected to the pressure connection head of the pressure connection stage 20, and the plurality of bus pressure transmitters 30 are electrically connected to the detection channel 21 of the pressure connection stage 20.

As shown in fig. 4, in step S1, the respective detection channels 21 of the pressure connection stations 20 are searched one by one, the detection channels 21 of the connected bus pressure transmitters 30 are determined, the identification of each searched pressure transmitter 30 is determined, and the respective bus pressure transmitters 30 for batch testing are distinguished based on each identification.

Specifically, the identity identifier pre-stored in each searched bus pressure transmitter 30 may be read, and the identity identifier may also be assigned to each searched bus pressure transmitter 30. The identification is used to distinguish different bus pressure transmitters 30, and may be a product serial number of the bus pressure transmitter 30, a temporary number assigned for detection, or other numbers, and the embodiment of the present invention is not limited. In assigning an identification to bus pressure transmitter 30, the designation of sense channel 21 can be used as the identification of bus pressure transmitter 30 connected to that sense channel 21.

The detailed implementation process of acquiring the identification of the bus pressure transmitter 30 to be detected is shown in fig. 5, and includes:

a search for the bus pressure transmitter 30 is initiated in step S10. Specifically, in the embodiment of the present invention, the detection channels 21 are searched one by one, and the detection channel 21 connected to the bus pressure transmitter 30 is searched.

In step S11, the detection channel 21 is switched.

Bus pressure transmitter 30 is searched for in current sense channel 21 in step S12.

Specifically, whether or not the bus pressure transmitter 30 is connected to the detection passage 21 can be judged by whether or not the electric signal output is detected.

In step S13, the search state of the current detection channel 21 is acquired.

Specifically, if the current detection channel 21 is searched for connection with the bus pressure transmitter 30, the identifier of the bus pressure transmitter 30 is obtained; if bus pressure transmitter 30 is connected to pre-detection channel 21, a message that bus pressure transmitter 30 is not searched is returned.

In step S14, it is determined whether or not the search for the current detection channel 21 is completed. Specifically, if the acquired state is a search, the process returns to step S13 to continue the search; if the status is found or not found, the search is completed and step S15 is executed.

In step S15, it is determined whether the bus pressure transmitter 30 is searched. When it is determined that the bus pressure transmitter 30 is not searched, step S17 is executed; upon determining that bus pressure transmitter 30 has been searched, step S16 is executed to store the identity of the searched bus pressure transmitter 30.

In step S17, it is determined whether the current detection passage 21 is the last detection passage 21 of the pressure connection stage 20.

If the last detection channel 21 is detected, step S18 is executed to end the search; if not the last detection channel 21, execution continues with step S11.

Through the above steps, the search of each detection channel 21 of the pressure connection station 20 is completed, and the detection channel 21 to which the bus pressure transmitter 30 is connected is determined.

In the example shown in FIG. 1B, sensing channel 21-1, sensing channel 21-2, and sensing channel 21-4 of the 4 sensing channels 21 are each coupled to a bus pressure transmitter having an identification 30A, 30B, and 30D, respectively.

As shown in fig. 4, in step S2, the searched identification of each bus pressure transmitter is stored in correspondence with the number of the detection channel 21 to which it is connected. In the example shown in FIG. 1B, a bus pressure transmitter 30 of identification 30A is coupled to sensing channel 21-1, and identification 30A is stored in association with sensing channel 21-1. Similarly, identifier 30B is stored in association with sensing channel 21-2, and identifier 30D is stored in association with sensing channel 21-4.

By the above steps S1 and S2, it is possible to determine the bus pressure transmitters 30 connected to the pressure connection station 20, the detection channel 21 to which each bus pressure transmitter 30 is connected and the identification thereof.

After the above steps S1, S2 are completed, a detailed implementation process of implementing the testbus pressure transmitter 30 is described below.

When the bus pressure transmitter 30 connected to the pressure connection station 20 is detected, the pressure output port 13 of the pressure source 10 is communicated with the pressure input port 23 of the pressure connection station 20 to provide a target pressure (which can be set) to the pressure connection station 20, so as to detect whether the value of the output pressure of the bus pressure transmitter 30 at the target pressure meets the requirement. It should be understood that the target pressure may be a single pressure value or a set of pressure values, and the set of pressure values is detected from pressure value to pressure value by applying the above method. The method for detecting the output pressure value of the bus pressure transmitter 30 may be implemented by detecting the output of the physical quantity or by using a relevant protocol (e.g., Hart protocol), which is not described in detail herein.

Taking the bus pressure transmitter 30 shown in fig. 3 as an example, the measurement range is 10MPa, if the target pressure is a single pressure value, any pressure value in the measurement range can be provided, for example, 5MPa, the pressure of 5MPa is provided to the pressure connection station 20, when the pressure is stabilized at 5MPa, the output quantity of the bus pressure transmitter 30 is measured one by one, the pressure value detected by each bus pressure transmitter 30 is determined, and the measurement accuracy of each bus pressure transmitter 30 at the target pressure point is determined.

If the target pressure is a set of pressure values, a plurality of pressure values to be detected, such as 0MPa, 2MPa, 4MPa, 6MPa, 8MPa, and 10MPa, can be selected within the range, and 0MPa, 2MPa, 4MPa, 6MPa, 8MPa, and 10MPa are sequentially provided to the pressure connection station 20, and the corresponding pressure value output by each bus pressure transmitter 30 at each pressure value of 0MPa, 2MPa, 4MPa, 6MPa, 8MPa, and 10MPa is determined, so as to determine whether the output of each bus pressure transmitter 30 at each pressure value of 0MPa, 2MPa, 4MPa, 6MPa, 8MPa, and 10MPa meets the requirement. It should be understood that the above manner of selecting the pressure value to be detected is merely an example, and does not form a limitation on the embodiment of the present invention, and when the embodiment of the present invention is implemented specifically, other selection strategies may be applied according to different scenarios.

When the plurality of bus pressure transmitters 30 are detected in batch, in step S3, the pressure connector 24 on the pressure connection platform 20 provides a target pressure for the plurality of bus pressure transmitters 30, and the output electrical physical quantity of each pressure transmitter 30 at any target pressure value is obtained according to the identification of each bus pressure transmitter 30 and the corresponding detection channel number. When the target pressure value is a set of pressure values, after the output electro-physical quantities of all the pressure transmitters 30 are obtained at any pressure value, the next target pressure value is switched to until all the pressure values in the target pressure values are detected.

The detection process in step S3 can be implemented by the steps shown in fig. 6, and as shown in fig. 6, the detection process includes:

in step S30, detection is started.

In step S31, a detection point is acquired. The verification point is a pressure value to be detected within the range of the bus pressure transmitter 30 to be detected. For example, the point to be detected may be one pressure value or a plurality of pressure values.

In step S32, the target pressure corresponding to the detected point is supplied to the pressure connection stage 20. For example, when the detected point is 5MPa, the target pressure is 5 MPa.

In step S33, the real-time pressure and the steady state of the pressure in the pressure connection stage 20 are acquired, and the regulated pressure is stabilized at the target pressure.

In step S34, it is determined whether the supply pressure has stabilized at the target pressure. If not, returning to step S33; if so, step S35 is executed.

In step S35, the detection channels 21 of the pressure connection stage 20 are switched one by one.

Since the sense channel number of the sense channel 21 to which the bus pressure transmitter 30 is connected has been stored in correspondence with the identification of the bus pressure transmitter 30 (step S2), it is possible to switch between the sense channels 21 to which the bus pressure transmitters 30 are connected one by one in step S35, and read the process quantity of the currently detected bus pressure transmitter 30 in step S36. The process quantities here are the output quantities of the currently sensed bus pressure transmitter 30 at the target pressure.

In step S36, the currently detected bus pressure transmitter 30 detection value is read. For example, when the bus pressure transmitter 30 is a hart bus transmitter, the identification of the pressure transmitter 30 and the corresponding channel identification may be used to obtain the hart process quantity of the bus pressure transmitter 30 detected before, so as to obtain the detected value of the bus pressure transmitter 30 detected before.

In step S37, it is determined whether the currently-sensed bus pressure transmitter 30 is the last bus pressure transmitter 30 to be sensed. If not, continue to step S35; if it is the last one, step S38 is performed.

In step S38, it is determined whether the current detected point is the last detected point, if not, step S31 is executed; if the detected point is the last detected point, the detection of all the detected points of all the bus pressure transmitters 30 is completed, and step S39 is executed to end the detection process.

As shown in fig. 4, in step S4, the detected value output from each bus pressure transmitter 30 at each target pressure value is compared with the corresponding target pressure value, and it is determined whether each bus pressure transmitter 30 satisfies the requirement.

For example, a detection value output by the bus pressure transmitter 30 at a target pressure value may be compared with a corresponding target pressure value, and if a predetermined threshold value is exceeded, the detection value of the target pressure of the bus pressure transmitter 30 does not satisfy a requirement; if the specified threshold is not exceeded, the sensed value of the target pressure of the bus pressure transmitter 30 is not satisfactory. According to the method described above, it is determined whether each bus pressure transmitter 30 meets the requirements at each pressure value. Enabling batch testing of multiple bussed pressure transmitters 30 connected to the pressure connection station 20.

Fig. 7A shows a detection system 100 of a multiplexed bus pressure transmitter according to an embodiment of the present invention, which includes a pressure source 10, a pressure connection block 20, and a detector 14, wherein the pressure source 10 is connected to the pressure connection block 20 through a pressure line, and the pressure connection block 20 is electrically connected to the detector 14. For a specific connection manner, refer to other embodiments, which are not described herein.

As shown in fig. 7B, the pressure connection table 20 is provided with a plurality of pressure connectors 24 on the upper side, a detection channel 21 corresponding to the pressure connectors 24, a preheating power source 22 inside, and a pressure inlet 23 on the side. The pressure connectors 24 are connected, and the pressure at each pressure connector 24 is the same, so that the same pressure can be provided to the bus pressure transmitter 30 connected to each detection channel 21.

As shown in fig. 7B, two bus pressure transducers 30 are connected to each of the two pressure connectors, and cables of the two bus pressure transducers 30 are electrically connected to sockets of the corresponding detection channels 21 provided in the pressure connection block 20, and the detection sockets are electrically connected to the detector 14. Two bus pressure transmitters 30 are plumbed to the pressure connection 20 via pressure connections 24 and are supplied with pressure from the pressure source 10. This is achieved by supplying pressure to both bus pressure transmitters 30 simultaneously and transmitting the electrical signals output by both bus pressure transmitters 30 to the detector 14 via the cable via the detection channel 21 on the pressure connection station 20.

In fig. 7B, the preheating power supply 22 simultaneously preheats the two bus pressure transmitters 30 during the detection process, the two bus pressure transmitters 30 are detected one by one, the detection power supply 12 is connected to one of the two bus pressure transmitters 30 when the pressure is stabilized at the target pressure, the bus pressure transmitter 30 connected to the detection power supply 12 is simultaneously connected to two power supplies, that is, the detection power supply 12 and the preheating power supply 22 are connected in parallel, the connection between the bus pressure transmitter 30 connected to the detection power supply 12 and the preheating power supply 22 is disconnected, the detection power supply 12 supplies power alone, and the detector outputs an electrical signal. After the detection is completed, the bus pressure transmitter 30 connected to the detection power supply 12 is connected to the preheating power supply 22 again, and at this time, the bus pressure transmitter 30 connected to the detection power supply 12 is connected to two power supplies, namely, the detection power supply 12 and the preheating power supply 22 which are connected in parallel, and the connection between the bus pressure transmitter 30 connected to the detection power supply 12 and the detection power supply 12 is disconnected. Thus, the detection of one bus pressure transmitter 30 under the target pressure is completed, and the detection of the other bus pressure transmitter 30 is realized by adopting the same power supply switching mode, which is not described in detail.

In the example shown in fig. 7B, the detector 14 searches the detection channels 21 of the pressure connection station 20 one by one, detects electrical signals in two detection channels 21 of the connected bus pressure transmitter 30, and no electrical signal exists in the other detection channels 21, determines to connect the two detection channels 21 of the bus pressure transmitter 30, and determines the identities of the two bus pressure transmitters 30.

Detector 14 stores the number of detection channel 21 (e.g., 21-1) in correspondence with the identification (e.g., 30A) of the bus pressure transmitter 30 to which it is connected.

The detector 14 controls the pressure source 10 to supply pressure to the two bus pressure transducers 30 on the pressure connection 20. If the range of the two bus pressure transmitters 30 is 5MPa, the target pressure value can be set to a single value, such as 2.5MPa, or the target pressure value can be set to a set of values, such as 0MPa, 2.5MPa, and 5 MPa.

In the detection step, detector 14 obtains the detection values of two pressure transmitters 30 at each pressure value based on the identifications (30A and 30B) of the respective bus pressure transmitters 30 and the detection channel numbers (21-1 and 21-2) of the respective detection channels 21, which have been stored correspondingly.

Fig. 8 shows an example of currents output from the two bus pressure transmitters 30 when the two bus pressure transmitters 30 are numbered as bus pressure transmitter 30A and bus pressure transmitter 30B and the range is 5 MPa.

As shown in fig. 8, when the target pressure value is 0MPa, the output current of the bus pressure transmitter 30A is 3.95mA, and the output current of the bus pressure transmitter 30B is 3.88 mA; when the target pressure value is 2.5MPa, the output current of the bus pressure transmitter 30A is 12.04mA, and the output current of the bus pressure transmitter 30B is 11.23 mA; when the target pressure value is 5MPa, the output current of bus pressure transmitter 30A is 20.10mA, and the output current value of bus pressure transmitter 30B is 19.13 mA.

In one embodiment, the threshold value that can be used to detect the accuracy of bus pressure transmitter 30 is set to 5%, that is, the ratio of the absolute value of the difference between the output current value of bus pressure transmitter 30 actually measured at any target pressure value and the standard value to the standard value is greater than 5%, that is, the bus pressure transmitter is not qualified, and that is, the bus pressure transmitter is qualified if the absolute value is less than or equal to 5%. The accuracy of bus pressure transmitter 30 can also be evaluated based on the magnitude of the absolute value of the difference between the output current value of bus pressure transmitter 30 actually measured at the target pressure value and the standard value. For example, if the absolute value of the difference is less than or equal to 1% relative to the reference value, then the accuracy of bus pressure transmitter 30 is considered to be 100%, and if the absolute value of the difference is 1% -2% relative to the reference value, then the accuracy of bus pressure transmitter 30 is considered to be 90%.

In an embodiment of the present invention, the detector may be integrated with the pressure source to form an intelligent pressure control device (e.g., a pressure controller), and the detector may be independent of the pressure source.

The detection method and the system for the bus pressure transmitter can simultaneously detect a plurality of bus pressure transmitters, realize batch detection of the bus pressure transmitters and further improve the detection efficiency. When the bus pressure transmitter is connected, the quick communication can be realized according to the identity and the detection channel, and the situation that the bus pressure transmitter needs to be reestablished for connection every time of reconnection is avoided, so that the connection time is saved. The preheating power supply and the detection power supply are arranged in parallel, all the bus pressure transmitters to be detected are supplied with power uninterruptedly, and the bus pressure transmitters do not need to be preheated for multiple times in the detection process, so that the time for preheating the bus pressure transmitters again is saved.

The invention discloses a detecting method and a system of a multi-channel bus pressure transmitter, which comprises the steps of searching a plurality of detecting channels one by one, determining the detecting channel connected with the bus pressure transmitter, determining the identity of each bus pressure transmitter in at least one searched bus pressure transmitter, correspondingly storing the identity of each bus pressure transmitter and the serial number of the detecting channel connected with the bus pressure transmitter, controlling the pressure of a pressure pipeline to be stabilized at least one pressure value, when the identity of each bus pressure transmitter is stabilized at a target pressure value, acquiring the output electro-physical quantity of each pressure transmitter according to the identity of each bus pressure transmitter and the serial number of the detecting channel corresponding to the bus pressure transmitter, determining the detecting value corresponding to the target pressure value of each bus pressure transmitter, and according to the target pressure value and the detecting value corresponding to the target pressure value of each bus pressure transmitter, each bus pressure transmitter is sensed. Therefore, batch detection of the bus pressure transmitters is realized, and compared with detection of a single pressure transmitter in the prior art, the detection efficiency of the bus pressure transmitters can be improved.

According to the detection method and the detection system of the bus pressure transmitter, in the process of detecting the bus pressure transmitters in batches, the rapid communication with the target bus pressure transmitter is realized according to the identity and the detection channel, the situation that the bus pressure transmitter needs to be re-connected every time of re-connection is avoided, the time consumption of connection is reduced, the batch detection of the bus pressure transmitter is realized, and the detection efficiency is improved.

The present invention is not limited to the above embodiments and examples, but includes various modifications. The above embodiments and examples are for explaining the present invention in detail for simplicity and understanding, and are not limited to having all the configurations explained. In addition, the structure, the connection mode and the like of each component are not limited to the above, and all equivalent changes and improvements based on the technical scheme of the invention should not be excluded from the protection scope of the invention.

Claims (14)

1. The detection method of the bus pressure transmitter is characterized in that the detection method is used for a bus pressure transmitter detection system, the bus pressure transmitter detection system comprises a pressure source provided with a pressure output port and a pressure connection table provided with a pressure pipeline, the pressure output port is connected with the pressure pipeline, the pressure connection table is provided with a plurality of pressure connectors and a plurality of detection channels corresponding to the pressure connectors, the pressure connectors are communicated with the pressure pipeline and used for being connected with the bus pressure transmitter, the detection channels are used for being electrically connected with the bus pressure transmitter, and the bus pressure transmitter adopts a bus communication pressure transmitter; the detection method comprises the following steps:

s1, searching the plurality of detection channels one by one, determining the detection channel connected with the bus pressure transmitter, and determining the identity of each bus pressure transmitter in at least one searched bus pressure transmitter;

s2, correspondingly storing the identification of each bus pressure transmitter and the serial number of the detection channel connected with the bus pressure transmitter;

s3, controlling the pressure of the pressure pipeline to be stabilized at least one pressure value through the pressure source; when the pressure value is stabilized at a target pressure value, acquiring the output electro-physical quantity of each bus pressure transmitter according to the identification of each bus pressure transmitter and the number of a detection channel corresponding to the bus pressure transmitter, and determining the detection value of each bus pressure transmitter corresponding to the target pressure value, wherein the target pressure value is any one of the at least one pressure value;

and S4, detecting each bus pressure transmitter according to the target pressure value and the detection value corresponding to the target pressure value of each bus pressure transmitter.

2. The detection method according to claim 1, wherein the S3 includes: when the pressure of the pressure pipeline is the target pressure value, switching detection channels one by one to obtain the output electro-physical quantity of each bus pressure transmitter, and determining the detection value corresponding to each bus pressure transmitter when the target pressure value is determined.

3. The method for testing according to claim 2, wherein said bus pressure transmitter testing system is provided with a preheating power supply and a testing power supply, said S3 includes:

each bus pressure transmitter is connected to the preheating power supply;

and connecting each bus pressure transmitter to the detection power supply one by one, and acquiring the output electro-physical quantity of each bus pressure transmitter.

4. The sensing method of claim 3, wherein individually connecting each bus pressure transmitter to the sensing power supply one by one, and obtaining the output electro-physical quantity of each bus pressure transmitter comprises:

the method comprises the steps of independently connecting a currently detected bus pressure transmitter to a detection power supply, disconnecting the currently detected bus pressure transmitter from the preheating power supply, supplying power to the bus pressure transmitter through the detection power supply, detecting the output electro-physical quantity of the currently detected bus pressure transmitter, and switching to the next bus pressure transmitter after the currently detected bus pressure transmitter is detected, so that the output electro-physical quantity of each bus pressure transmitter is obtained.

5. The detection method according to claim 3, wherein the detection power supply and the preheating power supply output the same type and value of the electro-physical quantity.

6. The inspection method of claim 3, wherein the pre-heating power supply is provided to the pressure bonding stage, and the inspection power supply is independent of the pressure bonding stage.

7. The detection method according to claim 3, wherein the pressure connection stage is provided with a plurality of sets of detection switches corresponding to the plurality of detection channels, each set of detection switches in the plurality of sets of detection switches corresponds to one detection channel, and each detection channel is controlled to be switched between the preheating power supply and the detection power supply.

8. The detection method according to claim 7, wherein each of the plurality of detection switches comprises a first switch and a second switch, one end of the first switch is connected to one end of the second switch and connected to a detection channel, the other end of the first switch is connected to the preheating power supply, and one end of the second switch is connected to the detection power supply;

each bus pressure transmitter is connected with the preheating power supply through a first switch in a group of detection switches;

and each bus pressure transmitter is connected with the detection power supply through a second change-over switch in a group of detection switches.

9. The detection method according to claim 1, wherein the S3 includes:

acquiring the identification of each bus pressure transmitter and the type of the output electro-physical quantity;

and receiving the output electro-physical quantity of each bus pressure transmitter at the target pressure value according to the identification of each bus pressure transmitter and the type of the output electro-physical quantity.

10. The method of testing according to any one of claims 1 to 9, wherein the number of said at least one bus pressure transmitter is at least two.

11. A sensing system for a bus pressure transmitter, comprising: a pressure connection table, a pressure source and a detector;

the pressure source pressure output port is connected with a pressure pipeline of the pressure connection table, the pressure connection table is provided with a plurality of pressure connectors and a plurality of detection channels corresponding to the pressure connectors, the pressure connectors are communicated with the pressure pipeline and used for being connected with a bus pressure transmitter, and the connection detection channels are used for being electrically connected with the bus pressure transmitter;

the pressure connection table is also provided with a preheating power supply for supplying power and preheating for the bus pressure transmitter; the detector is provided with an electro-physical quantity detection interface connected with an electro-physical quantity output end of the bus pressure transmitter;

the detector is configured to:

s1, searching the plurality of detection channels one by one, determining the detection channel connected with the bus pressure transmitter, and determining the identity of each bus pressure transmitter in at least one searched bus pressure transmitter;

s2, correspondingly storing the identification of each bus pressure transmitter and the serial number of the detection channel connected with the bus pressure transmitter;

s3, controlling the pressure of the pressure pipeline to be stabilized at least one pressure value through the pressure source; when the pressure value is stabilized at a target pressure value, acquiring the output electro-physical quantity of each bus pressure transmitter according to the identification of each bus pressure transmitter and the number of a detection channel corresponding to the bus pressure transmitter, and determining the detection value of each bus pressure transmitter corresponding to the target pressure value, wherein the target pressure value is any one of the at least one pressure value;

and S4, detecting each bus pressure transmitter according to the target pressure value and the detection value corresponding to the target pressure value of each bus pressure transmitter.

12. The system of claim 11, wherein the bus pressure transmitter detection system is provided with a preheating power supply and a detection power supply, and each bus pressure transmitter is connected with the preheating power supply;

the method comprises the steps of independently connecting a currently detected bus pressure transmitter to a detection power supply, disconnecting the currently detected bus pressure transmitter from the preheating power supply, supplying power to the bus pressure transmitter through the detection power supply, detecting the output electro-physical quantity of the currently detected bus pressure transmitter, and switching to the next bus pressure transmitter after the currently detected bus pressure transmitter is detected, so that the output electro-physical quantity of each bus pressure transmitter is obtained.

13. The system of claim 12, wherein the pressure connection station is provided with a plurality of sets of detection switches corresponding to the plurality of detection channels, each set of detection switches corresponding to one detection channel, and each detection channel is controlled to switch between the preheating power supply and the detection power supply.

14. The system according to claim 13, wherein each of the plurality of sets of detection switches comprises a first switch and a second switch, one end of the first switch is connected to one end of the second switch and connected to a detection channel, the other end of the first switch is connected to the preheating power supply, and one end of the second switch is connected to the detection power supply;

each bus pressure transmitter is connected with the preheating power supply through a first switch in a group of detection switches;

and each bus pressure transmitter is connected with the detection power supply through a second change-over switch in a group of detection switches.

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