CN2617560Y - Temperature signalling device for injection machine controlling circuit - Google Patents
Temperature signalling device for injection machine controlling circuit Download PDFInfo
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- CN2617560Y CN2617560Y CN 03226502 CN03226502U CN2617560Y CN 2617560 Y CN2617560 Y CN 2617560Y CN 03226502 CN03226502 CN 03226502 CN 03226502 U CN03226502 U CN 03226502U CN 2617560 Y CN2617560 Y CN 2617560Y
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Abstract
The utility model discloses a temperature signal transmission device on control circuit of injection molding machine, which aims to remove the defects of the prior art, such as the adverse impact of heavy current ingress for control computer. The utility model comprises in sequence a temperature sensor (2), a multiplexer (3), an analog-to-digital converter (4), a separation output circuit (6) and a separation input circuit (7); the data signal exchange of a control computer (1) can be realized through separation output circuit and separation input circuit; every selection control end of the multiplexer (3) is connected with the selection signal output end of the control computer through the separation optical coupler, the multiplexer and the separation input circuit are separately connected with the separation power supply (5). The data exchange between the utility model and the control computer is realized through separation, which can avoid the impact of heavy current for the control computer in the working field and make the operation of the control computer in the control circuit of the injection molding machine with more safety and reliability.
Description
Technical field
The utility model relates to a kind of temperature signal conveyer, especially in the injection machine control circuit, carries the conveyer of ambient temperature signal to the control computer.
Background technology
In the injection moulding industry, traditional injection machine relies on the input of the analog-digital converter of control computer to detect the temperature of injection machine, because the detected temperatures use is the direct Access Control computer of industrial thermocouple, in the ordinary course of things, the problem that uses is little.
But, in some cases, such as: when injection machine ground connection or connecting to neutral are bad, this mode has serious defective, because industrial thermocouple is being fixed on the injection machine by screw or other metals on the injection machine, industrial thermocouple direct or other amplification means Access Control computers by some, tend to high pressure or alternating current are introduced injection machine control computer, cause the badly damaged of control computer, even therefore might further damage plant equipment, cause personal injury or electric shock accidents.
Summary of the invention
Technical problem to be solved in the utility model is intended to provide a kind of temperature signal conveyer that is used for the injection machine control circuit, can safely the industry spot temperature signal be sent to the control computer in the injection machine control circuit.
According to the utility model, a kind of temperature signal conveyer that is used for the injection machine control circuit, described injection machine control circuit comprises the control computer, described temperature signal conveyer comprises the temperature sensor of preface serial connection successively, multiplexer, analog-digital converter, spacing output circuit, the temperature signal input of the output of described spacing output circuit and described control computer joins; Described temperature signal conveyer also comprises the isolation input circuit, the input of described isolation input circuit, output connect the control signal output of control computer, the control end of analog-digital converter respectively, the control end of respectively selecting of described multiplexer all joins through the selection signal output part of isolation optocoupler and described control computer respectively by corresponding address wire, described multiplexer is isolated input circuit and is also joined with insulating power supply respectively.
After adopting the utility model, no matter control computer in the injection machine control circuit is the temperature signal that receives, still output to the selection signal of industry spot temperature or the signal that analog-digital converter is controlled, all through isolating, and each device in the utility model or the employed power supply of circuit also all are insulating power supplies, avoided the forceful electric power of working site and high-pressure section may give the control influence that computer forms, made that the operation of the control computer in the injection machine control circuit is safer, reliable.
The purpose of this utility model, feature and advantage will be elaborated in conjunction with the accompanying drawings by embodiment:
Description of drawings
Fig. 1 is the circuit block diagram that the utility model is used for the temperature signal detection conveyer of injection machine control circuit;
Fig. 2 is the circuit theory diagrams that the utility model is used for a kind of embodiment of temperature signal detection conveyer of injection machine control circuit;
Fig. 3 is the circuit theory diagrams that temperature signal that the utility model is used for the injection machine control circuit detects the insulating power supply that uses among a kind of embodiment of conveyer.
Concrete embodiment
With reference to Fig. 1, a kind of temperature signal conveyer that is used for the injection machine control circuit, described injection machine control circuit comprises control computer 1, described temperature signal conveyer comprises the temperature sensor 2 of preface serial connection successively, multiplexer 3, analog-digital converter 4, spacing output circuit 6, the temperature signal input of the output of described spacing output circuit 6 and described control computer 1 joins; Described temperature signal conveyer also comprises isolates input circuit 7, the input of described isolation input circuit 7, output connect the control signal output of control computer 1, the control end of analog-digital converter 4 respectively, the control end of respectively selecting of described multiplexer 3 all joins through the selection signal output part of isolation optocoupler and described control computer respectively by corresponding address wire, described multiplexer 3 is isolated input circuit 7 and is also joined with insulating power supply 5 respectively.
Described insulating power supply 5 can adopt common battery, or as shown in Figure 3 buffer circuit and obtain, insulating power supply 5 shown in Fig. 3 comprises transforming circuit, rectification circuit and mu balanced circuit, the input of insulating power supply 5 can connect the mains supply in the injection machine control circuit, in Fig. 3, voltage-stabiliser tube 7805 output 5V voltages in the insulating power supply 5, can satisfy the different requirements of each circuit or device to input voltage, that is to say, each output of insulating power supply 5 respectively with multiplexer 3, the power input of isolating input circuit 7 connects.Such insulating power supply is set, and purpose is further the forceful electric power of working site and high-pressure section and control computer 1 to be kept apart, and reduces the possibility of the forceful electric power and the high-pressure section influence control computer 1 of working site.
With reference to Fig. 2, by one group of K type thermoelectricity occasionally the temperature sensor 2 of other models input to multiplexer 3 from the detected multi way temperature voltage signal of industry spot.
It is the multiplexer of MC14501 that multiplexer 3 described in the utility model can adopt model, and the INH pin of multiplexer 3, A pin, B pin, C pin all join through a selection signal output part of isolating optocoupler and described control computer 1 respectively by corresponding address wire as the control end of respectively selecting of multiplexer; Each I/O input pin of multiplexer 3 joins with a temperature sensor 2 respectively and (has 8 input pins, two temperature sensors have only been marked among the figure), to accept the temperature signal that each temperature sensor sends, the I/O output pin of multiplexer 3 joins as the output of multiplexer and the input of analog-digital converter 4;
The INH pin of described multiplexer 3, A pin, B pin, C pin all join by corresponding address wire and the emitter stage of isolating optocoupler, each isolates the positive pole of optocoupler and the selection signal output part of described control computer joins, colelctor electrode all connects the 5V insulating power supply, like this, just will control the temperature of computer output selects the environment of signal and industry spot to keep apart.Each model of isolating optocoupler can adopt cheap optocoupler such as PS2501 or TLP421.
Described analog-digital converter 4 can be that model is analog-digital converter and the auxiliary circuit thereof of MAX6675, its T+ pin joins as the output of input and multi-channel conversion circuit 3, the SO pin joins as the input of output and spacing output circuit 6, temperature signal input with control computer 1 after the data signal after analog-digital converter 4 conversions is isolated through spacing output circuit 6 again joins, spacing output circuit 6 comprises optocoupler U1 and auxiliary circuit thereof, the positive pole of optocoupler U1 is as the input of spacing output circuit 6, minus earth, emitter stage or colelctor electrode are as the output of spacing output circuit 6, thereby the temperature signal after will isolating is sent into the control computer; The model of optocoupler U1 also can be the optocoupler of types such as PS2501 or TLP421;
Isolate input circuit 7 and comprise that first isolates the optocoupler U2 and the second isolation optocoupler U3, described first positive pole of isolating the optocoupler U2 and the second isolation optocoupler U3 connects the control signal output of control computer 1, colelctor electrode connects insulating power supply 5, and emitter stage meets the CS! of analog-digital converter respectively Pin and CLK pin are so that control analog-digital converter.
From the above mentioned, the utility model has adopted the digital signal transmission of isolating, and spacing output circuit 6, isolation input circuit 7 that the control computer expert crosses in the utility model receive temperature signal, output control signal respectively, promptly carry out the data-signal exchange; Simultaneously, the temperature of control computer output selects signal also to input to multiplexer 3 after the isolation through each isolation optocoupler, industry spot environment and injection machine control computer work environment is just kept apart fully like this, thereby, the utility model has good anti-forceful electric power to disturb and the industry disturbance effect, the working environment of control computer is more optimized, and the operation of control computer is safer stable.Obviously, after connecting the utility model, its range of application can further expand to other need be to the industrial environment of temperature sampling control.
Claims (6)
1. temperature signal conveyer that is used for the injection machine control circuit, described injection machine control circuit comprises control computer (1), it is characterized in that: described temperature signal conveyer comprises the temperature sensor (2) of preface serial connection successively, multiplexer (3), analog-digital converter (4), spacing output circuit (6), the temperature signal input of the output of described spacing output circuit (6) and described control computer (1) joins; Described temperature signal conveyer also comprises isolates input circuit (7), the input of described isolation input circuit (7), output connect the control signal output of control computer (1), the control end of analog-digital converter (4) respectively, the control end of respectively selecting of described multiplexer (3) all joins through the selection signal output part of isolation optocoupler and described control computer respectively by corresponding address wire, described multiplexer (3) is isolated input circuit (7) and is also joined with insulating power supply (5) respectively.
2. the temperature signal conveyer that is used for the injection machine control circuit as claimed in claim 1, it is characterized in that: described insulating power supply (5) comprises transforming circuit, rectification circuit and mu balanced circuit, the input termination mains supply of described insulating power supply (5), output respectively with multiplexer (3), the power input of isolating input circuit (7) joins.
3. the temperature signal conveyer that is used for the injection machine control circuit as claimed in claim 1 or 2 is characterized in that: it is the multiplexer of MC14501 that described multiplexer (3) adopts model.
4. the temperature signal conveyer that is used for the injection machine control circuit as claimed in claim 3 is characterized in that: described analog-digital converter (4) is that model is analog-digital converter and the auxiliary circuit thereof of MAX6675.
5. the temperature signal conveyer that is used for the injection machine control circuit as claimed in claim 4, it is characterized in that: described spacing output circuit (6) comprises optocoupler U1 and auxiliary circuit thereof, the positive pole of optocoupler U1 is as the input of spacing output circuit (6), minus earth, emitter stage is as the output of spacing output circuit (6).
6. the temperature signal conveyer that is used for the injection machine control circuit as claimed in claim 4, it is characterized in that: described isolation input circuit (7) comprises that first isolates the optocoupler U2 and the second isolation optocoupler U3, described first positive pole of isolating the optocoupler U2 and the second isolation optocoupler U3 connects the control signal output of control computer (1), colelctor electrode connects insulating power supply (5), and emitter stage meets the CS! of analog-digital converter respectively Pin and CLK pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03226502 CN2617560Y (en) | 2003-05-23 | 2003-05-23 | Temperature signalling device for injection machine controlling circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03226502 CN2617560Y (en) | 2003-05-23 | 2003-05-23 | Temperature signalling device for injection machine controlling circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2617560Y true CN2617560Y (en) | 2004-05-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03226502 Expired - Fee Related CN2617560Y (en) | 2003-05-23 | 2003-05-23 | Temperature signalling device for injection machine controlling circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2617560Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102185467A (en) * | 2011-04-28 | 2011-09-14 | 广州金升阳科技有限公司 | Method for improving isolation optocoupler control reliability and circuit |
| CN108153274A (en) * | 2017-11-13 | 2018-06-12 | 北京全路通信信号研究设计院集团有限公司 | safe input dynamic sampling circuit |
-
2003
- 2003-05-23 CN CN 03226502 patent/CN2617560Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102185467A (en) * | 2011-04-28 | 2011-09-14 | 广州金升阳科技有限公司 | Method for improving isolation optocoupler control reliability and circuit |
| CN102185467B (en) * | 2011-04-28 | 2014-01-29 | 广州金升阳科技有限公司 | Method for improving isolation optocoupler control reliability and circuit |
| CN108153274A (en) * | 2017-11-13 | 2018-06-12 | 北京全路通信信号研究设计院集团有限公司 | safe input dynamic sampling circuit |
| CN108153274B (en) * | 2017-11-13 | 2020-07-03 | 北京全路通信信号研究设计院集团有限公司 | Safe input dynamic sampling circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |