WO2018001139A1 - Communication system and method exploiting pet controlled network - Google Patents

Abstract

The invention is applicable to the field of communications. Provided are a communication system and method exploiting a PET controlled network. The communication system comprises an external monitoring device, and a PET monitoring module. The external monitoring device transmits a data request message to the PET monitoring module. The PET monitoring module transmits a data report message to the external monitoring device. After receiving the data request message transmitted by the PET monitoring module, the PET monitoring module replies with a response message. The message comprises a message type, a message command word, parameters, and the number of parameters. The message type is a flag indicating an interaction direction of message data. The message command word is a flag indicating an operation command category of the message. The number of parameters is a flag indicating the number of parameters in the message involving a query or an operation/command. The parameters comprise data bodies of parameters involving the query or the operation/command and corresponding parameter character codes. A communication protocol set according to the actual situation of a PET controlled network has a small data volume, is highly reliable, and facilitates faster and more secure communication in a PET controlled network.

Description

PET control network communication system and method Technical field

The invention belongs to the field of communications, and in particular relates to a PET control network communication system and method.

Background technique

Positron Emission Tomography (PET) technology is a relatively advanced clinical examination imaging technology in the field of nuclear medicine. It needs to detect high-speed photons, convert high-speed photon signals into voltage signals, and convert voltage signals into digital signals. The digital signal is transmitted to a computer, and the computer reconstructs the digital signal into a projected image according to a specific algorithm.

The PET system includes a front-end data sampling system and a back-end data transmission system. The front-end data sampling system converts a pair of photons into voltage signals for high-speed sampling to obtain high-speed, large-capacity data, and the back-end data transmission system realizes high-speed, large-capacity data. Transfer to the central computer.

During the operation of the PET host, the host monitoring module also establishes communication with the external monitoring device through the network, and receives commands for monitoring, modifying, and querying the parameters of the PET host by the external monitoring device. The data interaction between the external device and the host monitoring module is subject to the agreed network communication protocol. PET control related data interaction mainly involves various data requests or status reports, which are characterized by relatively small data volume and high reliability requirements. Therefore, a more reasonable communication protocol is needed to satisfy the PET control network to communicate more effectively and reliably.

Summary of the invention

It is an object of embodiments of the present invention to provide a PET control network communication system and method that overcomes at least some of the deficiencies of the prior art.

A PET control network communication system according to an embodiment of the present invention includes: an external monitoring device and a PET monitoring module;

The external monitoring device sends a data request message to the PET monitoring module;

The PET monitoring module sends a data report message to the external monitoring device, and returns a response reply message after receiving the data request message sent by the PET monitoring module;

The data request message, the response reply message, and the data report message all include a message type, a message command word, a parameter number, and a parameter; the message type part is an identifier bit of a data interaction direction of the message; The message command word part is an identifier bit of an operation command type of the message; the parameter number part is an identifier bit of a number of parameters involved in a query or an operation/command in the message; the parameter part includes a The data body of the parameter involved in the message query or operation/command and the corresponding parameter feature code.

A PET control network communication method according to an embodiment of the present invention includes:

The external monitoring device sends a data request message message to the PET monitoring module;

After receiving the data request message, the PET monitoring module collects relevant parameter information and encapsulates the response message message to the external monitoring device;

The message packet includes a data body of the parameter related to the data request message and a corresponding parameter feature code. The message type identifies the data interaction direction, identifies the type of the data request by using the message command word, and identifies the message packet by the number of parameters. The number of parameters involved in the text.

The beneficial effects of a PET control network communication system and method provided by embodiments of the present invention include:

The invention provides a PET control network communication system and method, and the communication protocol set according to the actual situation of the PET control network has the characteristics of small data volume and high reliability, and is suitable for faster and safe communication of PET control network communication.

The data request message can include multiple parameters, reduce the number of message packets, and improve the interaction efficiency. The response reply message replied by the PET monitoring module may be in the format of a single or multiple messages. When the PET monitoring module collects a part of the parameters in the data request message for a long time or fails to collect, the external monitoring device may be replied to the collected external monitoring device. The response message of the parameter responds to the data that can be queried in time, and the monitoring personnel can understand the problems existing in the processing parameters of the PET monitoring module in a timely manner and deal with it in time. When two or more parameters related to a query or an operation/command in the data request message are serialized query requests for a single parameter type, the operation command type may be set to a data query of a specific interval, and the additional parameters are respectively specified to identify the interval. First and last, at this time, the number of parameters in the data request message is 2, which can reduce the size of the data query request message, and send a query message of multiple parameters to the PET monitoring module more concisely.

DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the embodiments or the description of the prior art will be briefly described below. It is obvious that the drawings in the following description are only the present invention. For some embodiments, other drawings may be obtained from those of ordinary skill in the art in light of the inventive workability.

1 is a schematic diagram of an embodiment of a PET control communication single parameter query message interaction provided by the present invention;

2 is a schematic diagram of Embodiment 1 of a PET control communication multiple parameter query message interaction provided by the present invention;

3 is a schematic diagram of Embodiment 2 of a PET control communication multiple parameter query message interaction provided by the present invention;

4 is a schematic diagram of Embodiment 3 of a PET control communication multiple parameter query message interaction provided by the present invention;

5 is a schematic diagram of Embodiment 4 of a PET control communication multiple parameter query message interaction provided by the present invention;

6 is a schematic diagram of an embodiment of a format of a message message in a PET control network communication system provided by the present invention.

detailed description

The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

In order to explain the technical solution described in the present invention, the following description will be made by way of specific embodiments.

Embodiment 1

Embodiment 1 of the present invention provides an embodiment of a PET control network communication system provided by the present invention.

The communication system includes: an external monitoring device and a PET monitoring module.

The external monitoring device sends a data request message to the PET monitoring module.

The PET monitoring module sends a data report message to the external monitoring device, and responds to the reply message after receiving the data request message sent by the PET monitoring module.

The data request message, the response reply message, and the data report message all include a message type, a message command word, a parameter number, and a parameter, where the message type part is an identifier bit of a data interaction direction of the message, and the message command word part is the message. The identification bit of the operation command type, the number of parameters is the identification bit of the number of parameters involved in the query or operation/command in the message, and the parameter part includes the data body of the parameter involved in the message query or operation/command and the corresponding feature code. .

Specifically, the interaction process between the PET monitoring module and the external monitoring device in the PET control network includes: the external monitoring device sends a status query request to the PET monitoring module, the PET monitoring module responds to the status query request; and the external monitoring device sends the PET monitoring module to the PET monitoring module. The operation/command request is sent, and the PET monitoring module responds to the operation/command request; the PET monitoring module actively sends data or status reports to the external monitoring device.

Table 1 shows the message type category table provided by the present invention.

name Coding (16bit) Related description REQ 0x0001 Status query request initiated by an external monitoring device ACK 0x0002 Response status query request or operation/command request by PET monitoring module CMD 0x0004 Operation/command request initiated by an external monitoring device RPT 0x0010 Data or status report initiated by the PET monitoring module ... ... ...

Table 1: Message Type Category Table

It can be seen from Table 1 that the data interaction direction of the message identified by the message type includes: a status query request (REQ pseudo code), an operation/command request (CMD pseudo code), a status query or an operation/command request response (ACK pseudo code) and data. Or status report (RPT pseudo code), etc. The status query request and the operation/command request are initiated by the external monitoring device to the PET monitoring module, and the status query or the operation/command request response and the data or status report are returned to the external monitoring device by the PET monitoring module or Initiated by the initiative.

Table 2 shows the message command word category table provided by the present invention.

Table 2: Message Command Word Type Table

The types of operation commands identified by the message command word include query parameters (GET) and setting parameters (SET). Tables 3 and 4 show the parameter format table and parameter category table provided by the present invention.

Table 3: Parameter Format Table

表4：参数种类表

Table 4: Parameter Type Table

It can be seen from Table 3 and Table 4 that the parameter part also includes the parameter identification code, the retention and the data body length. The parameter types include the voltage, temperature, fan speed, etc. of the X module, the Y module and the Z module, indicating that the message needs to be queried or operated. Which parameter of which module.

There is no limit to the number of parameters in each message. When multiple operation requests need to be expressed, and these requests can be attributed to the same topic, you can choose to encapsulate these operation requests into separate messages, or by parameter combination. It is combined into a single message. For example, it is assumed that the voltage, temperature, fan speed, and the like of a sub-module need to be queried. Since the operation subject is a parameter query, the corresponding message command words are the same, and can be expressed by a message format including multiple parameters.

FIG. 1 is a schematic diagram of an embodiment of a PET control communication single parameter query message interaction provided by the present invention. It can be seen from FIG. 1 that when the number of parameters involved in the query or operation/command in the data request message, the response reply message, and the data report message is 1, the number of parameters in the message is 1, and the parameter part is the data body of the parameter and Corresponding feature code.

FIG. 2 and FIG. 3 respectively show Embodiment 1 of the PET control communication multiple parameter query message interaction provided by the present invention. And the schematic diagram of the second embodiment, as shown in FIG. 2 and FIG. 3, the external monitoring device sends the status query request or the operation/command request message to the PET monitoring module by combining means to include two or more parameters, the PET monitoring module After receiving multiple parameter combination query requests, the related parameter information is collected, and the response sequence of the parameter sequence to be queried can be arranged according to actual needs. All parameter states can be collected and then combined into a single message to reply; some parameters are collected for a long time or collection failure occurs. In this case, the reply can be repeated in a fractional manner, and other parameters are preferentially returned. If there is no special agreement, the relative order between the parameters in the request message and the response message does not have to be consistent, which can be identified by the parameter signature.

FIG. 4 is a schematic diagram of Embodiment 3 of a PET control communication multiple parameter query message interaction provided by the present invention. For multiple query requests arriving at a time-sharing, when the query request frequency is high, and the PET monitoring module response speed is When you can't match it, you can consider how to combine the parameters into a single message to make a moderate optimization.

Preferably, as shown in FIG. 5, a schematic diagram of Embodiment 4 of the PET control communication multiple parameter query message interaction provided by the present invention is shown in FIG. 5. According to FIG. 5, the combined parameter message can also be applied to serialization of a single parameter type. Query the request and response, for example, query a set of voltage sequences of a sub-module. The sequence address numbers are 0, 1, 2, ..., N-1, N. The requested target parameters are voltages, but the address distribution is different. The operation command type identified by the message command word also includes a specific interval data query (GETARRAY), and the agreed additional parameters respectively identify the beginning and the end of the interval. At this time, the number of parameters in the data request message is 2, and the parameter part is the start parameter 0 and the termination parameter. The data body of N and the corresponding feature code. The response reply message corresponding to the reply may be in a combined manner or a fractional manner (in the embodiment given in FIG. 4, a combination reply manner), and the number of parameters in the response reply message is N+1, and the parameter part is corresponding. The data body of the N+1 parameters from the initial parameter 0 to the termination parameter N and the corresponding feature code.

Further, in a PET control network communication system provided by the present invention, an external monitoring device and a PET monitoring module exchange information messages, as shown in FIG. 6 , which is a PET control network communication system provided by the present invention. A schematic diagram of an embodiment of a format of a message message. As can be seen from FIG. 6, the message message in the PET control communication system includes a header, a transport packet, and a trailer, and a plurality of message composition message sequences are set in the transport packet. The message message can be divided into a packet, a message, and a parameter logic unit according to a hierarchy.

The transport packet is a basic data transmission unit of PET control communication, which is used as a carrier of the message sequence, and adds a header description field and a tail check code according to the message sequence. As shown in Table 5, the transport packet format table.

Table 5: Transport Packet Format Table

As can be seen from Table 5, the transport packet header includes the transport packet identification code, the transport packet version number, the transport packet body byte length, and the number of messages. The transport packet identification code is used to transmit the packet boundary identifier; the transport packet version number packet format version identifier may be regarded as part of the first identification code, and is convenient for future expansion; the transport packet body byte length indicates the length of the body content byte without the first and last tails. It is convenient for data reception and determination of packet boundaries; the number of messages indicates the number of messages contained in the body.

The message sequence is the payload of the transport packet and consists of one or more message logic units.

The tail check code is a CRC check code calculated based on the header and the body using the CRC16-CCITT algorithm (polynomial: 0x1021).

Each field in the message format uses high byte priority transmission (Big-Endian).

Each message contained in the message sequence of the transport packet is the basic semantic unit of the operation, and 0 or more parameters can be appended. Table 6 shows the message format table.

Table 6: Message Format Table

It can be seen from Table 6 that the message includes the message type, the message command word and the number of parameters, and the identifier code of the message indicates the message boundary identifier; the version number of the message is the message format version identifier, which can be regarded as part of the first identifier code. At the same time, it is convenient for future expansion; the body length of the message indicates the length of the message body (parameter sequence) without the header, which is convenient for data reception and determination of the boundary of the message.

Embodiment 2

The second embodiment provided by the present invention is an embodiment of a PET control network communication method provided by the present invention.

The communication method includes: the external monitoring device sends a data request message message to the PET monitoring module, and after receiving the data request message, the PET monitoring module collects relevant parameter information and encapsulates the response message message to the external monitoring device.

The message packet includes a data body of the parameter related to the data request message and a corresponding parameter feature code, and the data interaction direction is identified by the message type, the type of the data request is identified by the message command word, and the parameters involved in the message are identified by the number of parameters. number.

Preferably, the data request message includes a status query request and an operation/command request. PET monitoring module will also initiate Data or status report messages to external monitoring devices.

The data interaction direction includes: a status query request sent by the external monitoring device to the PET monitoring module, an operation/command request sent by the external monitoring device to the PET monitoring module, and a status query or an operation/command request response sent by the PET monitoring module to the external monitoring device, The data or status report sent by the PET monitoring module to the external monitoring device.

The types of data requests include: query parameters and setting parameters. Indicates that the message is a status query request message or an operation/command request message.

The types of parameters include the voltage, temperature, fan speed, etc. of the X module, the Y module, and the Z module, indicating which parameter of the module the query needs to query or operate.

When a parameter is queried or operated/command, the number of parameters in the data request message and the corresponding response reply message is 1, and the message includes the data body of the parameter and the corresponding feature code.

When multiple operation requests need to be expressed, and these requests can be attributed to the same topic, either the operation requests can be individually encapsulated into independent message messages, or they can be combined into a single message message by parameter combination. For example, it is assumed that the voltage, temperature, fan speed, and the like of a sub-module need to be queried. Because the operation subject is a parameter query, the corresponding message command words are the same, and can be expressed by a message format message containing multiple parameters.

After receiving the multiple parameter combination query request, the PET monitoring module collects relevant parameter information, and can arrange the response sequence of the parameter sequence to be queried according to actual needs. All parameter states can be collected and then combined into a single message packet to reply; some parameters are collected for a long time or collection fails. In this case, the reply can be repeated in a fractional manner, and other parameters are preferentially returned. If there is no special agreement, the relative order between the parameters in the request message and the response message does not have to be consistent, which can be identified by the parameter feature code.

For multiple query requests that arrive in time-sharing, when the frequency of query requests is high, and the response speed of the monitoring module cannot match, you can consider how to combine the parameters into a single message packet to make a moderate optimization.

Preferably, the combination parameter message can also be applied to a single parameter type serialization query request and response through a protocol agreement, for example, querying a set of voltage sequences of a sub-module, the sequence address numbers are 0, 1, 2, ..., N-1 , N, the target parameters of the request are voltage, but the address distribution is different. The operation command type identified by the message command word also includes a specific interval data query (GETARRAY), and the agreed additional parameters respectively identify the beginning and the end of the interval. At this time, the number of parameters in the data request message is 2, and the parameter part is the start parameter 0 and the termination parameter. The data body of N and the corresponding feature code. The response reply message corresponding to the reply may be combined or divided. The number of parameters in the response reply message is N+1, and the parameter part is the data of the corresponding initial parameter 0 to the N+1 parameter of the termination parameter N. Body and corresponding feature code.

The message packet includes a transport packet and its header and trailer; the transport packet includes a message sequence composed of a plurality of messages;

Further, the header of the transport packet includes a transport packet identification code, a transport packet version number, a transport packet body byte length, and a message number; the transport packet identifier code is used to transmit a packet boundary identifier; and the transport packet version number packet format Version identification; The length of the transport packet body byte indicates the length of the body content byte without the head and tail; the number of messages indicates the number of the messages included in the body text;

The tail of the transport packet is a CRC check code calculated based on the header and the body using the CRC16-CCITT algorithm.

The message includes a header and respective parameter portions; the header of the message includes an identifier of the message, a version number of the message, a body byte length of the message, the message type, the message command word, and the number of parameters, The identifier of the message represents a message boundary identifier; the version number of the message is a message format version identifier; the body byte length of the message indicates a message body byte length without a header; the parameter part includes a parameter identification code, and the reserved The parameter feature code, the data body length, and the data body.

Each field in the message message format is transmitted with a high byte priority.

It will also be understood by those skilled in the art that all or part of the steps of the foregoing embodiments may be implemented by a program to instruct related hardware, and the program may be stored in a computer readable storage medium. Storage media, including ROM/RAM, magnetic disks, optical disks, and the like.

The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection of the present invention. Within the scope.

Claims (10)

A PET control network communication system, characterized in that the communication system comprises: an external monitoring device and a PET monitoring module; The external monitoring device sends a data request message to the PET monitoring module; The PET monitoring module sends a data report message to the external monitoring device, and returns a response reply message after receiving the data request message sent by the PET monitoring module; The message includes a message type, a message command word, a parameter number, and a parameter; the message type part is an identifier bit of a data interaction direction of the message; and the message command word part is an identifier of an operation command type of the message. Bits; the parameter number portion is an identification bit of the number of parameters involved in the query or operation/command in the message; the parameter portion includes a data body of the parameter involved in the message query or operation/command and corresponding Parameter signature. The system according to claim 1, wherein the data interaction direction of the message identified by the message type comprises: a status query request and an operation/command request initiated by the external monitoring device to the PET monitoring module, And a status query or an operation/command request response and a data or status report sent by the PET monitoring module to the external monitoring device; The operation command type identified by the message command word includes: a query parameter and a set parameter. The system according to claim 1, wherein when the external monitoring device sends the data request message to the PET monitoring module that the number of parameters related to the query or the operation/command is two or more, The response reply message replied by the PET monitoring module is a format of a single or multiple messages; Preferably, when the PET monitoring module collects a part of the two or more parameters involved in the data request message for a long time or fails to collect, the PET monitoring module first responds to the external monitoring device. a response reply message to the collected parameters; Preferably, when two or more parameters related to the query or the operation/command in the data request message are serialized query requests for a single parameter type, the operation command type is a data query of a specific interval, and the additional parameters are agreed respectively. The first end of the identifier interval; the number of parameters in the data request message is 2, and the parameter part is the data body of the start parameter 0 and the termination parameter N and the corresponding parameter feature code. The system according to claim 1, wherein for a plurality of query requests that arrive at the PET monitoring module in a time-sharing manner, the plurality of corresponding response reply messages are combined or the respective parameters are combined into a single response reply message to reply; Preferably, when the response speed of the PET monitoring module cannot be matched, the parameters involved in the multiple query requests are combined into a single response reply message to be replied. The system according to claim 1, wherein a plurality of said message composition message sequences are disposed in a transport packet, said transport packet and its header and trailer form a message message, said external monitoring device and said PET monitoring Modules interact with each other through the message packet; Preferably, the header of the transport packet includes a transport packet identification code, a transport packet version number, a transport packet body byte length, and a message number; the transport packet identifier code is used to transmit a packet boundary identifier; and the transport packet version number a packet format version identifier; the transport packet body byte length represents a body content byte length without a head end; the number of messages indicates a number of the messages included in the body text; Preferably, the tail of the transport packet is a CRC check code calculated by using a CRC16-CCITT algorithm based on the header and the body; Advantageously, said message comprises a header and respective parameter portions; said header of said message comprising an identification code of the message, a version number of the message, a body byte length of the message, said message type, said message command word and said parameter Number, the identifier of the message represents a message boundary identifier; the version number of the message is a message format version identifier; the body byte length of the message indicates a message body byte length without a header; the parameter part includes a parameter identification code, a reservation, the parameter signature, a data body length, and the data body; Preferably, each field in the message message format is transmitted with high byte priority. A PET control network communication method, characterized in that the communication method comprises: The external monitoring device sends a data request message message to the PET monitoring module; After receiving the data request message, the PET monitoring module collects relevant parameter information and encapsulates the response message message to the external monitoring device; The message packet includes a data body of the parameter related to the data request message and a corresponding parameter feature code. The message type identifies the data interaction direction, identifies the type of the data request by using the message command word, and identifies the message packet by the number of parameters. The number of parameters involved in the text. The method of claim 6, wherein the data request message message comprises a status query request and an operation/command request; the PET monitoring module actively initiates a data or status report message to the external monitoring device; Preferably, the data interaction direction includes: a status query request sent by the external monitoring device to the PET monitoring module, an operation/command request sent by the external monitoring device to the PET monitoring module, and the PET monitoring module a status query or an operation/command request sent to the external monitoring device to respond to a reply, a data or status report sent by the PET monitoring module to the external monitoring device; Preferably, the type of the data request includes: a query parameter and a setting parameter. The method according to claim 6, wherein when the external monitoring device sends the data request message to the PET monitoring module, the number of parameters related to the query or the operation/command is two or more, The response reply message replied by the PET monitoring module is a format of a single or multiple messages; Preferably, when the PET monitoring module collects a part of the two or more parameters involved in the data request message for a long time or fails to collect, the PET monitoring module first responds to the external monitoring device. Already received Response response message of the set parameters; Preferably, when two or more parameters related to the query or the operation/command in the data request message are serialized query requests for a single parameter type, the type of the data request of the data request message is a specific interval data query. The agreed additional parameters respectively identify the beginning and the end of the interval; the number of parameters in the data request message is 2, and the parameter part is the data body of the start parameter 0 and the termination parameter N and the corresponding parameter feature code. The method according to claim 6, wherein the plurality of query requests for time-sharing to the PET monitoring module are replied by a plurality of corresponding response reply messages or by combining the respective parameters into a single response reply message; Preferably, when the response speed of the PET monitoring module cannot be matched, the parameters involved in the multiple query requests are combined into a single response reply message to be replied. The method according to claim 6, wherein said message packet comprises a transport packet and a header and a trailer thereof; and said transport packet comprises a message sequence consisting of a plurality of messages; Preferably, the header of the transport packet includes a transport packet identification code, a transport packet version number, a transport packet body byte length, and a message number; the transport packet identifier code is used to transmit a packet boundary identifier; and the transport packet version number a packet format version identifier; the transport packet body byte length represents a body content byte length without a head end; the number of messages indicates a number of the messages included in the body text; Preferably, the tail of the transport packet is a CRC check code calculated by using a CRC16-CCITT algorithm based on the header and the body; Advantageously, said message comprises a header and respective parameter portions; said header of said message comprising an identification code of the message, a version number of the message, a body byte length of the message, said message type, said message command word and said parameter Number, the identifier of the message represents a message boundary identifier; the version number of the message is a message format version identifier; the body byte length of the message indicates a message body byte length without a header; the parameter part includes a parameter identification code, a reservation, the parameter signature, a data body length, and the data body; Preferably, each field in the message message format is transmitted with high byte priority.

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