CN102384794A - Programmable logic controller (PLC) temperature expansion module - Google Patents
Programmable logic controller (PLC) temperature expansion module Download PDFInfo
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- CN102384794A CN102384794A CN2010102686811A CN201010268681A CN102384794A CN 102384794 A CN102384794 A CN 102384794A CN 2010102686811 A CN2010102686811 A CN 2010102686811A CN 201010268681 A CN201010268681 A CN 201010268681A CN 102384794 A CN102384794 A CN 102384794A
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- expansion module
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- temperature
- input terminal
- temperature sensor
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- 230000002093 peripheral effect Effects 0.000 claims description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 230000005855 radiation Effects 0.000 abstract 2
- 238000009529 body temperature measurement Methods 0.000 abstract 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 230000000644 propagated effect Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 235000008429 bread Nutrition 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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Abstract
The invention discloses a programmable logic controller (PLC) temperature expansion module, which comprises a printed circuit board (PCB), wherein input terminal bars and various circuit devices used as main heat sources are arranged on the first side of the PCB, a temperature sensor used for local temperature compensation is arranged on the second side and is arranged in a position corresponding to the input terminal bars, the temperature sensor is semi-enclosed by a heat radiation cover, and an opening of the heat radiation cover faces the direction of the input terminal bars. The PLC temperature expansion module has the following beneficial effects that the influence of the main heat sources such as the circuit devices and the like on the temperature sensor, i.e. on the local temperature measurement can be reduced, the precision of the local temperature compensation of the PLC temperature expansion module is improved, and the precise temperature measuring requirement is met.
Description
Technical field
(Programmable Logic Controller, PLC) field relate in particular to a kind of PLC temperature expansion module to the present invention relates to FPGA control.
Background technology
PLC temperature expansion module has been widely used in temperature survey and the processing in various industrial occasions or the life.When adopting thermopair, PLC temperature expansion module carries out far-end thermometric the time; Need know near the temperature value that near-end (input port just) is; Promptly need near input port, do local temperature compensation, just can calculate the dut temperature of far-end in view of the above.At present, PLC temperature expansion module generally adopts thermal resistance temperature sensor that local temperature is measured, and its structure is as shown in Figure 1.PLC temperature expansion module comprises a pcb board 11, and a thermal resistance temperature sensor 111, various circuit elements device 112 and Input terminal block 113 are set on it, and wherein Input terminal block 113 is welded on the edge of pcb board 11.111 positions that are arranged near terminal row 113 of thermal resistance temperature sensor are so that measure the temperature at input port place as far as possible accurately.Nonetheless; The thermometric accuracy that the heat that circuit elements device 112 on the pcb board distributes still can influence 111 pairs of input port places of thermal resistance temperature sensor through copper film on it or air; Cause local effect temperature compensation undesirable; The work that often continues along with PLC temperature expansion module can be higher gradually to local Temperature Compensation value.
Summary of the invention
The purpose of the embodiment of the invention is, a kind of PLC temperature expansion module that improves temperature compensation is provided, and improves the accuracy of the local temperature compensation of PLC temperature expansion module.
The embodiment of the invention provides a kind of PLC temperature expansion module; Comprise a pcb board; Various circuit elements devices and Input terminal block as main thermal source are set on first of said pcb board; Go up for second the temperature sensor that carries out local temperature compensation is set, said temperature sensor is located at and the corresponding position of said Input terminal block, and an opening is towards the said temperature sensor of heat dissipating housing semi-surrounding of said Input terminal block direction.
Preferable, the peripheral pcb board of the non-opening surface of said heat dissipating housing is provided with joint-cutting.
Preferable, the face relative with opening of said heat dissipating housing is provided with air vent.
Preferable, coated heat reflection horizon on the outside surface of said heat dissipating housing.
Embodiment of the present invention embodiment; Has following beneficial effect: can main thermals source such as said circuit elements device also promptly be reduced the thermometric influence in this locality temperature sensor; Improve the accuracy of the local temperature compensation of PLC temperature expansion module, satisfy the demand of high precision thermometric.
Description of drawings
In order to be illustrated more clearly in the technical scheme in the embodiment of the invention; The accompanying drawing of required use is done to introduce simply in will describing embodiment below; Obviously, the accompanying drawing in describing below only is one embodiment of the present of invention, for those of ordinary skills; Under the prerequisite of not paying creative work property, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the planar structure synoptic diagram of prior art PLC temperature expansion module;
Fig. 2 is the perspective view of PLC temperature expansion module of the present invention;
Fig. 3 is the vertical view of PLC temperature expansion module of the present invention;
Fig. 4 is the side view of PLC temperature expansion module of the present invention.
Embodiment
To combine the accompanying drawing in the embodiment of the invention below, the technical scheme in the embodiment of the invention is carried out clear, intactly description, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
The embodiment of the invention provides a kind of PLC temperature expansion module, below in conjunction with Fig. 2-Fig. 4 the embodiment of PLC temperature expansion module of the present invention is described.
Like Fig. 2-shown in Figure 4, the PLC temperature expansion module of present embodiment comprises: pcb board 22, and Input terminal block 221, temperature sensor 222, heat dissipating housing 223 and various circuit elements device 41, wherein:
Be arranged on first of said pcb board 22 as the said various circuit elements devices 41 of main thermal source and said Input terminal block 221; Said various circuit elements device comprises various processor chips, electric capacity, heat sink resistance or the like; First face of said pcb board 22 is covered with copper film/copper cabling, realizes being connected of circuit on input port and the said pcb board 22 on the said Input terminal block 221 with this.
The said temperature sensor 222 that carries out local temperature compensation is arranged on second of said pcb board 22, and it can be a thermal resistance temperature sensor; Concrete, said temperature sensor 222 is located at and said Input terminal block 221 corresponding positions, so that measure the temperature near the place, input port accurately; One opening encloses said temperature sensor 222 towards heat dissipating housing 223 3 bread of Input terminal block 221 directions of closing on sensor 222; Heat to stop other various circuit elements devices to distribute is propagated to said temperature sensor 222 through air, improves the accuracy of local temperature compensation.In other embodiment, this heat dissipating housing 223 also can be for other shape, such as semicircle.
The peripheral pcb board of three enveloping surfaces of said heat dissipating housing 223 is provided with joint-cutting 225, with block heat that various circuit elements devices distribute through the copper film on the said pcb board 22 to said temperature sensor 222 conduction, further improve the accuracy of local temperature compensation.The face relative with opening of said heat dissipating housing 223 is provided with air vent (perhaps seam) 224, and the air that the heat in the said heat dissipating housing 223 can in time be circulated is taken away, and unlikely accumulation too much causes potential safety hazard.This air vent 224 and nonessential, it decides to obtain best local effect temperature compensation according to the ventilation condition in the installation environment is good.
Coated heat reflection horizon on the outside surface of said heat dissipating housing 223, the heat that further stops various circuit elements devices to distribute is propagated to said temperature sensor 222 through air, improves the accuracy of local temperature compensation.
Embodiment of the present invention embodiment; Has following beneficial effect: can main thermals source such as said circuit elements device also promptly be reduced the thermometric influence in this locality temperature sensor; Improve the accuracy of the local temperature compensation of PLC temperature expansion module, satisfy the demand of high precision thermometric.
Above disclosedly be merely preferred embodiment of the present invention, can not limit the present invention's interest field certainly with this, the equivalent variations of therefore doing according to claim of the present invention still belongs to the scope that the present invention is contained.
Claims (4)
1. PLC temperature expansion module; Comprise a pcb board; It is characterized in that: various circuit elements devices and Input terminal block as main thermal source are set on first of said pcb board; Go up for second the temperature sensor that carries out local temperature compensation is set, said temperature sensor is located at and the corresponding position of said Input terminal block, and an opening is towards the said temperature sensor of heat dissipating housing semi-surrounding of said Input terminal block direction.
2. PLC temperature expansion module as claimed in claim 1 is characterized in that: the peripheral pcb board of non-opening surface of said heat dissipating housing is provided with joint-cutting.
3. PLC temperature expansion module as claimed in claim 2 is characterized in that: the face relative with opening of said heat dissipating housing is provided with air vent.
4. PLC temperature expansion module as claimed in claim 2 is characterized in that: coated heat reflection horizon on the outside surface of said heat dissipating housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102686811A CN102384794A (en) | 2010-08-31 | 2010-08-31 | Programmable logic controller (PLC) temperature expansion module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102686811A CN102384794A (en) | 2010-08-31 | 2010-08-31 | Programmable logic controller (PLC) temperature expansion module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102384794A true CN102384794A (en) | 2012-03-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102686811A Pending CN102384794A (en) | 2010-08-31 | 2010-08-31 | Programmable logic controller (PLC) temperature expansion module |
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| Country | Link |
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| CN (1) | CN102384794A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114811905A (en) * | 2022-03-31 | 2022-07-29 | 浙江中浩电子科技有限公司 | Temperature and humidity compensation method for line controller of air pipe machine |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1773228A (en) * | 2004-11-10 | 2006-05-17 | 松下电器产业株式会社 | Electronic circuit device |
| CN101013228A (en) * | 2005-10-03 | 2007-08-08 | 株式会社日立制作所 | Display device |
| CN101185222A (en) * | 2005-05-31 | 2008-05-21 | 法雷奥电机设备公司 | Dissipators for electronic components of rotating electrical equipment |
| CN201331036Y (en) * | 2009-01-08 | 2009-10-21 | 潘佩昌 | High power LED heat radiating device |
| CN101586970A (en) * | 2008-05-21 | 2009-11-25 | 霍尼韦尔国际公司 | Integrated mechanical package design for combi sensor apparatus |
-
2010
- 2010-08-31 CN CN2010102686811A patent/CN102384794A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1773228A (en) * | 2004-11-10 | 2006-05-17 | 松下电器产业株式会社 | Electronic circuit device |
| CN101185222A (en) * | 2005-05-31 | 2008-05-21 | 法雷奥电机设备公司 | Dissipators for electronic components of rotating electrical equipment |
| CN101013228A (en) * | 2005-10-03 | 2007-08-08 | 株式会社日立制作所 | Display device |
| CN101586970A (en) * | 2008-05-21 | 2009-11-25 | 霍尼韦尔国际公司 | Integrated mechanical package design for combi sensor apparatus |
| CN201331036Y (en) * | 2009-01-08 | 2009-10-21 | 潘佩昌 | High power LED heat radiating device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114811905A (en) * | 2022-03-31 | 2022-07-29 | 浙江中浩电子科技有限公司 | Temperature and humidity compensation method for line controller of air pipe machine |
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Application publication date: 20120321 |