CN107543590A - Measuring system - Google Patents
Measuring system Download PDFInfo
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- CN107543590A CN107543590A CN201710255013.7A CN201710255013A CN107543590A CN 107543590 A CN107543590 A CN 107543590A CN 201710255013 A CN201710255013 A CN 201710255013A CN 107543590 A CN107543590 A CN 107543590A
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- Prior art keywords
- control unit
- main equipment
- control units
- control
- measuring system
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Classifications
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
Abstract
The present invention provides a kind of miniaturization for being capable of realization device or saves the measuring system of installation space.In measuring system (10a) involved by first embodiment, data between several nodes (40a~40n) and CPU (20) communicate via the main equipment (30) and slave unit (50a~50n) in system support panel (11), not by wired, but row data communication can just be entered by wireless connection.Thus, without setting data communication cable between them, without ensuring the space of storage cable in housing.Therefore, it is possible to make system support the volume-diminished of panel (11) to store the size occupied by the space of cable.Thus, it is possible to which the miniaturization of realization device or installation space can be saved.
Description
Technical field
The present invention relates to a kind of measuring system, possesses several control units for being connected to several sensors.
Background technology
Possessing the measuring system for several control units for being connected to several sensors for example has in following patent documents 1
Disclosed " level gauging system ".In the system, several detection controls being connected with as the electrode pair of sensor are provided with
Circuit processed, these several detection control circuits are for example connected (patent document 1 with the counting circuit formed with PC：The
0021 section).
(patent document)
Patent document 1：Japanese Unexamined Patent Publication 2013-205311 publications
As " level gauging system " disclosed in above-mentioned patent document 1, possesses the measurement of several control units
In system, several control units will be upper be handled the sensing data etc. that will be exported from this several control unit
Between position control unit (counting circuit in patent document 1), it is necessary to by cable corresponding with the quantity of control unit etc. come
Realize electrical connection.For example, in the case that control unit is 100, then need to arrange 100 cables between upper control unit
To connect.
Particularly be connected to several control units of several sensors with its upper control unit and be accommodated in it is same
In the case of in housing, therefore, to assure that the space of the cable for connecting both is stored in housing.Therefore, housing may be because of cable
The radical of line and become to maximize, the miniaturization of device may be had influence on so as to some cables, or setting device can not be saved
Space.
The content of the invention
The present invention in view of above-mentioned technical problem, and it is an object of the present invention to provide a kind of measuring system, is capable of the miniaturization of realization device,
Or installation space can be saved.
To achieve the above object, the measuring system of the invention described in the claim 1 of claims is characterized in,
Possess：Some the first control units, respectively with some sensors can data be communicatedly connected；Second control unit, with institute
State some the first control units can data communicatedly connect, and from some first control units receive it is described some
Each sensing data transmitted by sensor or the sensor information based on these sensing datas；And housing, store institute
State some the first control units and second control unit；Some first control units and the described second control are single
Data communication between member is the RFDC carried out in the housing.
Data between some the first control units and the second control unit, which communicate, to be carried out in housing without line number
According to communication.That is, not by wired between some the first control units and the second control unit, and just can by wireless connection
Enter row data communication.Thus, without setting the cable of data communication between them, therefore have no need to ensure that in housing and store
The space of cable.
In addition, the measuring system of the invention described in the claim 2 of claims is characterized in, claim 1
In described measuring system, in the housing in the case of some second control units of storage, when described some the
When one second control unit in two control units is without defined information processing, in some first control units,
First control unit of the sensing data or the sensor information is have sent to one second control unit, to institute
Other second control units stated in some the second control units send the sensing data or the sensor information.
" defined information processing " refers to that the communication means between the first control unit and the second control unit is for example with polling method
In the case of, the transmission processing (poll processing) of poll frame is sent from the second control unit to the first control unit.
In housing in the case of some the second control units of storage, when one second control in some the second control units
Unit processed without (for example, situation about being handled without the poll to be carried out originally etc.) during defined information processing, to this one the
Two control units have sent the first control unit of sensing data or sensor information then into some the second control units
Other second control units (for example, can normally be polled the second control unit of processing etc.) send sensing datas
Or sensor information.Thereby, it is possible to suppress because first control unit is to can not for example be replied by failure and other reasons one
Second control unit persistently sends sensing data or sensor information, caused by the biography of sensing data or sensor information
Pass obstacle.
In addition, the measuring system of the invention described in the claim 3 of claims is characterized in, claim 1
In described measuring system, in the housing in the case of some second control units of storage, described some second
The control unit of a part second in control unit is from the control unit of a part first in some first control units
Receive the sensing data or the sensor information；Second control of the remainder in some second control units
Unit processed from the first control unit of the remainder in some first control units receive the sensing data or
The sensor information.
In housing in the case of some (such as 3) second control units of storage, for example, in 3 the second control units
1 the second control unit receive sensing data or sensing from 30 the first control units in 100 the first control units
Device information, another 1 the second control unit receive sensing from 30 the first control units in remaining 70 the first control units
Device data or sensor information, the second remaining 1 control unit receive sensor number from remaining 40 the first control units
According to or sensor information.Thus, the present invention receives sensing data with 1 the second control unit from 100 the first control units
Or the situation of sensor information is compared, the load of the information processing of each can be mitigated.That is, with the second control unit
It is single situation compared to being capable of scatteredload.
In addition, the measuring system of the invention described in the claim 4 of claims is characterized in, in claim
In measuring system described in 1, in the housing in the case of 2 second control units of storage, 2 second controls are single
Described in second control unit from the control unit of a part first reception in some first control units in member
Sensing data or the sensor information, if another the second control unit in 2 second control units is from described
First control unit of the remainder in the dry control unit of platform first receives the sensing data or the sensor information,
When second control unit is without defined information processing, a part of first control unit is to described another
The control unit of platform second sends the sensing data or the sensor information；When another second control unit is not entered
As defined in row during information processing, the first control unit of the remainder sends the biography to second control unit
Sensor data or the sensor information." defined information processing " refers to, between the first control unit and the second control unit
Communication means for example be polling method in the case of, poll frame is sent from the second control unit to the first control unit
Transmission handles (poll processing).
In housing in the case of 2 the second control units of storage, second control unit in 2 the second control units
Such as receive sensing data from 50 the first control units (a part of first control unit) in 100 the first control units
Or sensor information；(the first control of remainder is single from remaining 50 the first control units for another the second control unit
Member) receive sensing data or sensor information.Thus, the present invention and 1 the second control unit are from 100 the first control units
The situation for receiving sensing data or sensor information is compared, and can mitigate the load of the information processing of each, that is to say, that
Being capable of scatteredload compared with the second control unit is single situation.
In addition, when second control unit without defined information processing (for example, without the poll to be carried out originally
Situation of processing etc.) when, 50 first controls of sensing data or sensor information are have sent to second control unit
Unit processed sends to another the second control unit (for example, can normally be polled the second control unit of processing etc.) and passed
Sensor data or sensor information.In addition, when another the second control unit without defined information processing (for example, not having
Originally situation of the poll to be carried out processing etc.) when, it have sent sensing data or sensing to another second control unit
50 the first control units of device information are then to second control unit (for example, processing etc. can be normally polled
Second control unit) send sensing data or sensor information.Thereby, it is possible to suppress 50 the first control units for example to by
Sensing data or sensing are persistently sent in second control unit of one (or another) that failure and other reasons can not reply
Sensing data or the conductive obstruction of sensor information caused by device information.
In addition, the measuring system of the invention described in the claim 5 of claims is characterized in, claim 1
In measuring system in~4 described in any one, some sensors are the liquid that detection is stored in the reservoir of ship
The liquid level sensor of the liquid level position of body.It is (especially commercial accordingly, for the limited ship of the installation space for carrying equipment
Ship) for, there is the effect for simplifying the space that cable is stored in housing or device.That is, the miniaturization of realization device
Or the effect of saving installation space is good.
Due to the cable of data communication need not be set between some the first control units and the second control unit, because
This need not ensure the space of storage cable in housing.Therefore, it is possible to make occupied by the accommodation space of the volume-diminished cable of housing
Size.Thus, it is possible to which the miniaturization of realization device or installation space can be saved.
It can suppress because the first control unit is to one second control unit that can not for example be replied due to failure and other reasons
Persistently send sensing data or sensor information, caused by sensing data or the conductive obstruction of sensor information.Therefore,
It can avoid due to such one second control unit without defined information processing and caused obstacle.
Being capable of scatteredload compared with the second control unit is single situation.Therefore, the second control unit can be at a high speed
Ground carries out collection or the information processing to sensing data or sensor information.
Brief description of the drawings
Fig. 1 is the explanation figure for the configuration example for showing the measuring system involved by the first embodiment of the present invention.
Fig. 2 is the explanation figure for the example for showing the communication means between main equipment and each slave unit.
Fig. 3 is that the measuring system for showing first embodiment is equipped on the explanation figure of the example of ship.
Fig. 4 is the explanation figure for the configuration example for showing the measuring system involved by the modification of first embodiment.
Fig. 5 is the explanation figure for the configuration example for showing the measuring system involved by second embodiment of the present invention.
Fig. 6 is the explanation figure for the example for showing the communication means (when normal) between main equipment and each slave unit.
Fig. 7 is the explanation figure for the example for showing the communication means (when abnormal) between main equipment and each slave unit.
Fig. 8 is the explanation figure for the configuration example for showing the measuring system involved by the modification of second embodiment.
Embodiment
Hereinafter, each embodiment of the measuring system of the present invention is illustrated referring to the drawings.
[first embodiment]
First, based on Fig. 1~Fig. 4, the first embodiment of the measuring system of the present invention is illustrated.As shown in figure 1,
Measuring system 10a involved by first embodiment be mainly supported by the system panel 11, CPU20, main equipment 30, node 40, from
Equipment 50, sensor unit 60 etc. are formed.
System supports that panel 11 is the device frame that can install several units or circuit board, also sometimes referred to as system branch
Frame.System supports panel 11 to be typically configured to, and metallic plate is installed on metal frame in a manner of covering top surface, bottom surface and side
Body, the access face at before it the or back side can be to outside space open.Be configured in first embodiment store CPU20,
Unit or the circuit boards such as main equipment 30, node 40, slave unit 50.Also, system supports panel 11 equivalent to claims institute
" housing " stated.As long as CPU20, main equipment 30, node 40, slave unit 50 etc. or hermetic type (such as case can be stored
Shape) housing.
CPU20 is, for example, the microcomputer (micro-computer circuit plate) of circuit board (substrate) shape, by MPU (Micro-
Processing Unit), memory (DRAM, EEPROM etc.), input/output interface etc. form.CPU20 can also possess bag
Include single chip microcomputer, the DSP (Digital Signal Processor) of MPU, memory etc. etc. composition.
In first embodiment, as described later, CPU20 is based on via several nodes 40 and from each sensor unit 60
The sensing data (numerical data) sent, by exporting the operation information of each sensor unit 60, or to sensing data
Accumulative processing or statistical disposition are carried out, its result is output to outside.Therefore, CPU20 can connect the display omitted in accompanying drawing
Device device, or be connected via cable 80 with upper computer system.Also, stored in advance in memory (EEPROM etc.)
The routine data of these information processings is able to carry out by MPU.
Main equipment 30 is can to enter the wireless communication unit of row data communication by wireless.For example, main equipment 30 is by structure
As can carry out the radio-cell of radio communication with defined frequency, the frequency of radio-cell be selected or transmitting-receiving etc. is controlled
Wireless controller and antenna of system etc. are formed.In addition, it is not shown in the drawings radio-cell, wireless controller and antenna etc..The
In one embodiment, CPU20 separates to form with main equipment 30.Therefore, carried out between CPU20 and main equipment 30 by cable 13
Electrical connection, so as to which row data communication can be entered between the two.
In addition, in first embodiment, CPU20 and main equipment 30 (are altogether CPU20 in Fig. 1 composition, main equipment 30
And connect their cable 13) equivalent to " the second control unit " described in claims.
Node 40 is used to send the sensing data sent from sensor unit 60 to CPU20, or to sensor list
Initialization process as defined in the progress of member 60.Therefore, node 40 is will to be controlled such as the sensor formed by single chip microcomputer
Device, in the same manner as CPU20, such as it is configured to circuit board (substrate) shape.In first embodiment, 1 sensor unit 60 is set
Put 1 node 40.That is, several nodes 40a, 40b, 40c ..., 40n quantity and the quantity of sensor unit 60
It is corresponding, they by cable 90, respectively with sensor unit 60a, 60b, 60c ..., 60n is connected and can realize data
Communication.In addition, node 40 may not be the sensing data that will be sent from sensor unit 60 directly via slave unit 50
Deng send to CPU20 structure, but based on these sensing datas generation sensor information, by transmission to CPU20's
Structure.For example, it is also possible to sensing data will be represented that it compares knot compared with defined a reference value (defined threshold value)
The fine or not information (OK or NG) of fruit exports as sensor information.
Slave unit 50 is can to enter the row data communication (void with double-head arrow shown in Fig. 1 with main equipment 30 by wireless
Line) wireless communication unit.Therefore, slave unit 50 and main equipment 30 almost in the same manner as, such as by being configured to defined frequency
The radio-cell of radio communication can be carried out, the frequency of radio-cell is selected or wireless controller that transmitting-receiving etc. is controlled and
Antenna etc. is formed.The wireless controller of slave unit 50 is registered unlike the wireless controller of main equipment 30 in slave unit 50
There is the identification information (main equipment ID) for the main equipment 30 being managed to the slave unit 50.In addition, structure is also not shown in accompanying drawing
Radio-cell, wireless controller and antenna into slave unit 50 etc..In first embodiment, node 40 is configured to slave unit 50
One.Therefore, slave unit 50a, 50b, 50c ..., 50n quantity and several nodes 40a, 40b, 40c ..., 40n
Quantity is corresponding.In addition, in first embodiment, node 40 and slave unit 50 are altogether equivalent to " the described in claims
One control unit ".
In the measuring system 10a of such structure, as shown in Fig. 2 being supported in system in panel 11, main equipment 30 and slave unit
50 carry out radio communication, but before being described, to the establishment of connection method between main equipment 30 and slave unit 50
Illustrate.In addition, the connection that will be discussed below is performed by main equipment 30 and 50 respective wireless controller of slave unit
Foundation, poll and its response (ACK, NACK) etc..
Slave unit 50 is when being powered or being performed initialization process, first to being managed to the slave unit 50
Main equipment 30 sends the request command frame that connection is established in request.Except the identification for being attached with the slave unit 50 is believed in the request command
Cease beyond (slave unit ID), also addition of the identification information (main equipment ID) of main equipment 30.Therefore, receive connection and establish request
Order main equipment 30 be judged as YES with itself establish connection request when, registration be additional to request establish connection request
Slave unit ID in order, and send and addition of slave unit ID connection and establish the acknowledgement frame of response.Thus, main equipment 30 with
Establishment of connection between slave unit 50 is completed, and therefore, hereafter main equipment 30 is sent with predetermined time interval to slave unit 50
Poll frame.
That is, as shown in Fig. 2 main equipment 30 (" M " shown in Fig. 2) to several slave units 50a, 50b itself managed,
50c ..., 50n (" Sa ", " Sb ", " Sc " ... " Sn " shown in Fig. 2) send poll frame (POL) in order.It is attached in poll frame
Added with the slave unit ID that can determine slave unit 50.Therefore, when each slave unit 50a, 50b, 50c ..., 50n receives and is directed to
During poll frame (POL) of itself, ACK (ACKnowledgement, affirmative acknowledgement) is sent to main equipment 30.
In addition, in communication means shown in Fig. 2, the data (downlink data) from main equipment 30 to slave unit 50 are not accounted for
Transmission, for example, representing to carry out the Strong systems of sensor unit 60 life that initializes etc. sending from main equipment 30 to slave unit 50
In the case of making data, the NACK for being sent in from slave unit 50 to main equipment 30 and response being carried out during the error such as data is had
The situation of (Negative ACKnowledgement, negative response).In addition, poll is sent to slave unit 50 in main equipment 30
Frame, and corresponding slave unit 50 is not carried out to it in situation (situation for not returning to ACK) of response, main equipment 30 will be corresponding
The warning message of slave unit 50 send to CPU20, passed on to CPU20 and represent that abnormal information occurs in corresponding slave unit 50.
Thus, for example, the display equipment that CPU20 is connected to CPU20 shows the fault message of corresponding slave unit 50 (for example, making
The icon of corresponding slave unit 50 from it is normal when green be changed into exception when red), come to operator's report accordingly from setting
Standby 50 break down.
, should be from addition, in the case where sensing data is sent to slave unit 50 from the sensor unit 60 connected
Equipment 50 sends sensing data (" DATA " shown in Fig. 2) to main equipment 30 after ACK.In first embodiment, master sets
It is standby to carry out radio communication according to such communication means (polling method) between 30 and slave unit 50.In addition, from main equipment 30 to
Slave unit 50 sends the processing (poll processing) of poll frame equivalent to " the defined information processing " described in claims.
The measuring system 10a of first embodiment for example can apply to the liquid level sensor carried on oil tanker.That is,
In one embodiment, as shown in figure 3, measuring system 10a is applied to collect liquid level data (sensor number from liquid level sensor 107
According to) system of information processing is carried out, the liquid level sensor 107 is used for the shipload case for detecting the hull 101 for being arranged at oil tanker 100
The liquid level position (liquid level) of liquid 110 in 105.The typical such as fmcw radar formula liquid level sensor of liquid level sensor 107 or
Electromagnetism float type liquid level sensor.Each liquid level sensor 107 (sensor unit 60a, 60b, 60c ..., 60n) be installed on
Roof 102, the roof 102 are used for the top for sealing the shipload case 105 separated by partition wall 103.In addition, in Fig. 3, hull is cut
101 part and the section of shipload case 105 is more intuitively shown.In addition, to partition wall 103, shipload case 105, level sensing
A part in device 107, liquid 110 is labeled with reference, and a part is without mark reference.
Liquid level data (sensing data) detected by each liquid level sensor 107 is sent respectively via cable 90
To system support panel 11 in each node 40 (node 40a, 40b, 40c ..., 40n), the system support panel 11 be arranged at
It is used for the installation space of carrying equipment in ship.Thus, as described above, liquid level number detected by each liquid level sensor 107
According to (sensing data) from slave unit 50 (slave unit 50a, 50b, 50c ..., 50n) be wirelessly transmitted to main equipment 30, and pass through
Collected by the main equipment 30 for receiving these data by CPU20.CPU20 is based on the liquid sent from each liquid level sensor 107
Position data, accumulative processing or statistical disposition are carried out by exporting the operation information of each liquid level sensor 107, or by liquid level data,
Its result is output to outside, or it is shown in the display equipment eliminated in figure.
As described above, the measuring system 10a involved by first embodiment possesses：Several nodes 40a~40n, respectively
It is connected with some sensor unit 60a~60n and row data communication can be entered；CPU20, from some sensor unit 60a
~60n receives to be sent by some sensor unit 60a~60n for being connected with these nodes 40a~40n and being capable of data communication
Each sensing data；System supports panel 11, stores several nodes 40a~40n and CPU20.Then, several nodes
Data between 40a~40n and CPU20 communicate via the main equipment 30 and slave unit 50a~50n in system support panel 11,
Not by wired, and realize that data communicate by wirelessly.Thus, without setting data communication cable (section between them
Save electric wire), without ensuring the space of storage cable in housing.Panel 11 is supported to store cable therefore, it is possible to reduction system
The volume of this segment space.Thus, it is possible to which the miniaturization of realization device or installation space can be saved.
In addition, in above-mentioned measuring system 10a, CPU20 is separately constructed with main equipment 30, and makes two by cable 13
Person is connected, but CPU20 can also be integrally constituted with main equipment 30.That is, as shown in figure 4, measurement as first embodiment
System 10a modification or the structure (measuring system 10b) for saving the cable 13 in system support panel 11.Thus,
For measuring system 10b compared with foregoing measuring system 10a, system supports the radical for the cable stored in panel 11 to reduce, because
And can more save electric wire, and can further reduction system support panel 11 volume.Therefore, it is possible to further realize
Installation space is further saved in the miniaturization of device.
In addition, the measuring system 10b shown in Fig. 4 is in the same manner as measuring system 10a, such as it is readily applicable to oil tanker 100
The liquid level sensor 107 carried.
[second embodiment]
Next, being based on Fig. 5~Fig. 8, the second embodiment of the measuring system of the present invention is illustrated.Such as Fig. 5 institutes
Show, the measuring system 10c of second embodiment and being a difference in that on CPU20 for the measuring system 10a of first embodiment connect
It is connected to 2 main equipments 30a, 30b.Therefore, pair constituting portion minute mark substantially the same with the measuring system 10a of first embodiment
Note and the reference of measuring system 10a identicals, and the description thereof will be omitted.
As shown in figure 5, in the measuring system 10c of second embodiment, main equipment 30a and main equipment 30b this 2 pass through cable
Line 13 and while interconnect, be also connected with CPU20.Thus, a main equipment 30a in 2 main equipments 30 for example can
Manage slave unit 50a, 50b, 50c, also, another main equipment 30b can for example manage slave unit 50d ..., 50n.Specifically
Ground, main equipment 30a, 30b can use the communication means shown in Fig. 6 and Fig. 7.And, it is assumed here that slave unit 50 a total of 6
Platform.Then, by main equipment 30a, 30b for being managed under default conditions to slave unit 50a~50n main equipment ID be registered to from
Equipment 50a~50n wireless controller, so that a main equipment 30a manages 3 slave units 50a, 50b, 50c therein, it is another
Platform main equipment 30b manage remaining 3 slave unit 50d ..., 50n.
When from slave unit 50a~50n receive connection establish request order main equipment 30a, 30b be judged as YES with from
When body establishes the request of connection, the slave unit ID for being additional to the request command that connection is established in request is registered, and sends attached
Slave unit ID connection has been added to establish the acknowledgement frame of response.Thus, between main equipment 30a and slave unit 50a, 50b, 50c
Establishment of connection is completed, and main equipment 30b and slave unit 50d ..., the establishment of connection completion between 50n.Therefore, from this
Afterwards, main equipment 30a, 30b sends poll frame with predetermined time interval to slave unit 50a for each being managed etc..
That is, as shown in fig. 6, a main equipment 30a (" Ma " shown in Fig. 6) itself is managed 3 slave unit 50a,
50b, 50c (" Sa ", " Sb ", " Sc " shown in Fig. 6) send poll frame (POL) in order.Similarly, another main equipment 30b
3 slave unit 50d that (" Mb " shown in Fig. 6) is managed itself ..., 50n (" Sd " shown in Fig. 6 ..., " Sn ") presses
Order sends poll frame.The slave unit ID of slave unit 50 is can determine due to being attached with poll frame, therefore, when each slave unit
50a, 50b, 50c ..., 50n is when receiving the poll frame for itself, send ACK to main equipment 30a or main equipment 30b.
Main equipment 30a is adjusted with main equipment 30b to transmission timing, in order to avoid respectively at sending poll frame in the same time.Example
Such as, main equipment 30a, 30b is via the shared tranmitting data register for determining transmission timing of cable 13, thus, it is possible to pass through identical (jointly)
Tranmitting data register sends poll frame.Thus, it is possible to send poll frame in mutually different timing, it is thus possible to suppress because both
Poll frame produces the failure of poll caused by conflict.Furthermore, it is possible to had by the respective radio-cell of main equipment 30a, 30b
Standby carrier sense circuit avoids the conflict of such poll frame.
In addition, send poll frame to slave unit 50 in main equipment 30a, 30b, and corresponding slave unit 50 not to progress
In the situation (situation for not returning to ACK) of response, main equipment 30a, 30b send the warning of corresponding slave unit 50 to CPU20
Information, it will represent that corresponding slave unit 50 abnormal information occurs and is conveyed to CPU20.Thus, for example, CPU20 connects with CPU20
Show the fault message of corresponding slave unit 50 (for example, the icon of corresponding slave unit 50 is from normal on the display equipment connect
When red of green when being changed into exception), to inform the failure of corresponding slave unit 50 to operator.
When in main equipment 30a, 30b, another main equipment 30b hinders for some reason etc. and in the case of poll frame can not being sent, category
Slave unit 50d in main equipment 30b management ..., 50n is for example changed into by a main equipment 30a by following methods
Management.That is, even if as shown in fig. 7, (or finally receiving poll frame in the timing that poll frame is sent from another main equipment 30b
Afterwards by the timing of defined time-out time) by there is no poll yet in the case of, slave unit 50d ..., 50n is to other
One main equipment 30a sends the request command frame (REQ) that connection is established in request.
In the request command in addition to the slave unit ID for being attached with the slave unit 50, main equipment 30a master also addition of
Device id.Therefore, the request connected is established with itself when the main equipment 30a for receiving the order that request is established in connection is judged as YES
When, registration is additional to the slave unit ID that request is established in the request command of connection, and sends the connection that addition of slave unit ID
Establish the acknowledgement frame (RES) of response.Thus, main equipment 30a and slave unit 50d ..., the establishment of connection between 50n completes.
After connection is established, a main equipment 30a sends poll frame (POL) in order to slave unit 50a~50n, thus, it is possible to
It is enough that all slave units 50 etc. are managed.That is, all grades of slave unit 50 are managed by main equipment 30a.In addition,
One main equipment 30a hinders etc. for some reason be unable to send poll frame in the case of, by the slave unit 50a of main equipment 30a management,
50b, 50c are changed into the same way to be managed by another main equipment 30b.
As described above, one in the measuring system 10c according to involved by second embodiment, main equipment 30a, 30b this 2
Platform main equipment 30a from 6 node 40a, 40b, 40c, 40d ..., 3 nodes 40a, 40b, 40c in 40n receive sensor
Data, another main equipment 30b from remaining 3 node 40d ..., 40n receive sensing data.Thus, set with 1 master
Standby 30 from 6 node 40a, 40b, 40c, 40d ..., 40n receive the situation of sensing data and compare, each can be mitigated
The load of the information processing of main equipment 30.That is, compared with main equipment 30 is single situation, being capable of scatteredload.
In addition, when a main equipment 30b is handled without poll, sensor number is have sent to a main equipment 30b
According to 3 node 40d ..., 40n to can normally be polled processing etc. another main equipment 30a send sensor
Data.Also, when another main equipment 30a is handled without poll, sensor number is have sent to another main equipment 30a
According to 3 nodes 40a, 40b, 40c to can normally be polled processing etc. a main equipment 30b send sensor number
According to.Thereby, it is possible to suppress 6 node 40a, 40b, 40c, 40d ..., 40n can not for example reply to due to failure and other reasons
A main equipment 30a (or another main equipment 30b) persistently send the transmission of sensing data caused by sensing data
Obstacle.
In addition, in above-mentioned measuring system 10c, CPU20 separates to form with main equipment 30a, 30b, and between the two
Realized and connected by cable 13, but CPU20 can also be integrally constituted with main equipment 30a, 30b.That is, as shown in figure 8, can also
1 CPU20 is added again, is integrally constituted a CPU20a and main equipment 30a, and another CPU20b and main equipment 30b is formed
It is integrated.In this case, CPU20a is connected with CPU20b by cable 13, be configured to ensure CPU20a, 20b this two it
Between slave unit 50 management information uniformity.That is, the slave unit 50a that CPU20a and CPU20b is managed with main equipment 30a
Deng the unduplicated mode mutually such as slave unit 50d managed with main equipment 30b, share each slave unit 50 (slave unit 50a,
50b, 50c, 50d ..., 50n) management information.
Thus, with 1 CPU20 to come from 6 node 40a, 40b, 40c, 40d ..., 40n sensing data enters
The situation of row information processing is compared, and can mitigate the load of each CPU20 information processing.That is, it is single with CPU20
One situation is compared, being capable of scatteredload.In addition, CPU20 can also be more than 3.
In addition, the measuring system 10d shown in the measuring system 10c and Fig. 8 of second embodiment is same with measuring system 10a
Ground, it can also be applied to the liquid level sensor 107 that such as cruise 100 is carried.
In addition, in above-mentioned first embodiment and second embodiment, for purposes of illustration only, with node 40 or sensor unit
60 are illustrated in case of several, and node 40 or sensor unit 60 that can also be more than 100 is via radio
Road is connected with the grade of main equipment 30.
In above-mentioned first embodiment and second embodiment, the communication means between main equipment 30 and slave unit 50 uses
Be polling method.Thus, such as compared with the situation using competitive way, can prevent between slave unit 50 (for example, slave unit
50a and slave unit 50b) sensing data conflict.If using competitive way, the quantity of node 40 or sensor unit 60
More, the probability that conflict is produced between sensing data is higher.Therefore, by using polling method, can prevent because of conflict and
The forfeiture of caused sensing data, so as to improve the reliability of sensing data.Further, since polling method is unlike TDMA
(Time Division Multiple Access, time division multiple acess connection) mode needs correct time slot like that, so as to not
Need using the synchronous method for easily becoming complexity.Thus, for example the node 40 or sensor unit 60 of more than 100 are via nothing
In the case that line circuit is connected with the grade of main equipment 30, by using polling method, in the case of asynchronous, and pass through simple side
Method can just keep the stable quality of sensing data.
In addition, in above-mentioned first embodiment and second embodiment, with the liquid level sensor carried on oil tanker 100
107 situations for being used as exemplified by sensor unit 60,60a~60n are illustrated, as long as but the present invention measuring system energy
Physical quantity as defined in enough measurements (position, distance, displacement, quality, the composition of material (gas liquid solid) or concentration,
Voltage, electric current, power, temperature, humidity, pressure, flow, light (light beam, luminosity, illuminance, brightness), magnetic, sound, vibration frequency
Rate, speed, acceleration, angular speed etc.) sensor (test section).
More than, the concrete example of the present invention is described in detail, but they are only an example, not to claims
It is defined.In technology described in claims, the technology to above-mentioned concrete example progress various modifications or change is included.This
Outside, technical characteristic illustrated in this specification or accompanying drawing is not right to play technology serviceability by independent or various combinations
The combination described in claim during application is defined.Also, the technology in this specification or accompanying drawing is to reach some simultaneously
The technology of individual purpose, there is technology serviceability in itself reaching one of purpose.In addition, included in " description of reference numerals " one column
Record in arc can be explicitly indicated that in the term described in the technical terms and claims used in the respective embodiments described above
Corresponding relation.
(description of reference numerals)
10a, 10b, 10c, 10d ... measuring system
11 ... systems support panel (housing)
13rd, 80,90 ... cable
20 ... CPU (the second control unit, one second control unit, a part of second control unit, second control
Unit, other second control units, the second control unit of remainder, another the second control unit)
20a ... CPU (one second control unit, a part of second control unit, second control unit)
(other second control units, the second control unit of remainder, another second control are single by 20b ... CPU
Member)
30 ... main equipments (the second control unit)
30a ... main equipments (one second control unit, a part of second control unit, second control unit)
30b ... main equipments (other second control units, the second control unit of remainder, another second control
Unit)
40,40a, 40b, 40c, 40d, 40n ... node (the first control unit)
50,50a, 50b, 50c, 50d, 50n ... slave unit (the first control unit)
60,60a, 60b, 60c, 60d, 60n ... sensor unit (sensor)
100 ... cruises (ship)
105 ... shipload casees (reservoir)
107 ... liquid level sensors (sensor)
110 ... liquid
Claims (5)
1. a kind of measuring system, it is characterised in that possess：
Several first control units, respectively with several sensors can data be communicatedly connected；
Second control unit, with several described first control units can data be communicatedly connected, and from described some first
Control unit receives each sensing data of some sensors transmission or the sensor based on these sensing datas
Information；And
Housing, some first control units and second control unit are stored,
Data between some first control units and second control unit, which communicate, to be carried out in the housing
RFDC.
2. measuring system according to claim 1, it is characterised in that
In the housing in the case of some second control units of storage,
It is described some when one second control unit in some second control units is without defined information processing
It is have sent in the control unit of platform first, to one second control unit described in the sensing data or the sensor information
First control unit, other second control units into some second control units send the sensing data or
The sensor information.
3. measuring system according to claim 1, it is characterised in that
In the housing in the case of some second control units of storage,
The control unit of a part second in some second control units is from some first control units
A part of first control unit receives the sensing data or the sensor information, also, some second control
First control of second control unit of the remainder in unit from the remainder in some first control units
Unit receives the sensing data or the sensor information.
4. measuring system according to claim 1, it is characterised in that
In the housing in the case of 2 second control units of storage,
Second control unit in 2 second control units is from the part in some first control units
First control unit receives the sensing data or the sensor information, also, another in 2 second control units
One the second control unit receives the biography from the first control unit of the remainder in some first control units
Sensor data or the sensor information,
When second control unit is without defined information processing, a part of first control unit is to described
Another the second control unit sends the sensing data or the sensor information,
When another second control unit is without defined information processing, the first control unit of the remainder
The sensing data or the sensor information are sent to second control unit.
5. the measuring system according to any one in Claims 1 to 4, it is characterised in that
Some sensors are the level sensings for detecting the liquid level position of liquid stored in the reservoir of ship
Device.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016126120A JP6263232B2 (en) | 2016-06-25 | 2016-06-25 | Measuring system |
| JP2016-126120 | 2016-06-25 |
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| JP (1) | JP6263232B2 (en) |
| KR (1) | KR102022112B1 (en) |
| CN (1) | CN107543590B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110111549A (en) * | 2018-02-01 | 2019-08-09 | 欧姆龙株式会社 | Input unit |
Families Citing this family (2)
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| JP6357255B1 (en) * | 2017-03-16 | 2018-07-11 | ソフトバンク株式会社 | system |
| KR102253737B1 (en) * | 2018-12-24 | 2021-05-18 | 한국산업기술대학교산학협력단 | Remote monitoring and control system using wireless network |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN107543590B (en) | 2020-01-14 |
| KR20180001445A (en) | 2018-01-04 |
| KR102022112B1 (en) | 2019-09-17 |
| JP2017228260A (en) | 2017-12-28 |
| JP6263232B2 (en) | 2018-01-17 |
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