CN2072244U - Multi-channel high-precision program controller for temp - Google Patents
Multi-channel high-precision program controller for temp Download PDFInfo
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- CN2072244U CN2072244U CN 90211503 CN90211503U CN2072244U CN 2072244 U CN2072244 U CN 2072244U CN 90211503 CN90211503 CN 90211503 CN 90211503 U CN90211503 U CN 90211503U CN 2072244 U CN2072244 U CN 2072244U
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Abstract
多路高精度程序温控仪是一种测量精度非常高 的多路温度控制仪，它主要由输入电路、电压/频率 变换电路、充电隔离电路、信号处理电路以及输出电 路所构成，其中输入电路由三路相同的信号输入通道 和一路室温补偿电路以及多路开关组成，输出电路由 三路相同的输出通道以及反相器所组成，信号处理电 路主要由一片单片微机和一个RAM和一个ROM 以及一个控制定时器所组成。该温控仪能与钨铼热 电偶配套使用。
The multi-channel high-precision program temperature controller is a multi-channel temperature controller with very high measurement accuracy. It is mainly composed of an input circuit, a voltage/frequency conversion circuit, a charging isolation circuit, a signal processing circuit and an output circuit. The input circuit It is composed of three identical signal input channels, one room temperature compensation circuit and multiple switches, the output circuit is composed of three identical output channels and an inverter, and the signal processing circuit is mainly composed of a single-chip microcomputer, a RAM and a ROM And a control timer. The temperature controller can be used in conjunction with tungsten-rhenium thermocouples.
Description
The utility model is a kind of high precision instrument of programed temperature, belongs to the technical field of temperature controller device.
The temperature controller device has many kinds, and wherein having a kind of is the program temperature controller.The object of at present all its control of program temperature controller can only be one, and the precision of control also is general control accuracy, some is required than higher controlling object, common program temperature controller is just not competent, and some thermopair can not supportingly be used, and can only use the thermopair of regulation, owing to these reasons, people require than higher occasion controlling object, will adopt some other householder method to go to solve, do the cost that has often increased equipment greatly like this, and increased the complicacy of opertaing device, brought certain inconvenience for actual the use.
Goal of the invention of the present utility model is exactly that practical problems at above existence has manufactured and designed a kind of duplex high precision program temperature controller, and it is many that this instrument has the control way, the control accuracy height, range of adjustment wide can with the matching used advantage of various thermopairs.
Duplex high precision program temperature controller of the present utility model mainly is made up of input circuit (1), voltage/frequency conversion (2), photoelectricity isolation (3), signal Processing (4), output circuit (5).Wherein input circuit (1) is by three road signal input channels, one road ambient-temperature compensation circuit and multi-way switch and signal amplifying part branch constitute, each road input channel is made up of two operational amplifiers respectively, wherein last as preposition amplification usefulness, use as follower one of back, three output terminals of its three tunnel input channel connect " 13,14,15 " pin of multi-way switch " CD4051 " respectively, and the output terminal of its " 12 " pin and ambient-temperature compensation circuit joins.The pin of " CD4051 " " 3 " is a signal output part, this end is connected with signal amplifier, after the signal amplification, its output terminal is connected with " EIN " end of voltage/frequency conversion (2), the output terminal of voltage/frequency conversion (2) i.e. " out " end is connected with photoelectricity isolation (3), isolate (3) and waveform shaping signal circuit by photoelectricity, the P3.4 that signal is sent into the little process chip " 8031 " in the signal Processing (4) holds, and signal Processing (4) is mainly by latch " 74LS373 ", microprocessor " 8031 ", memory " 6264 and 27128 " and control timer " 8253 " are formed.P1.0～the P1.5 of " 8031 " is connected to a switch respectively, the other end of switch circuit taking alarm, and the P0.0 of " 8031 "～P0.7 end meets the D0～D7 of memory " 6264 " and " 27128 " respectively, also holds with the D0～D7 of " 8155 " simultaneously and joins.P2.0～the P2.4 of " 8031 " joins with " 25,24,21,23, the 2 " end of " 6264 " and " 25,24,21,23, the 2 " end of " 27128 " respectively, and the P2.5～P2.7 of " 8031 " holds with " 1,2,3 " of " 74LS138 " respectively and joins.Horizontal and vertical 11 signal line of keyboard meet the P0.5～P0.0 and the PB.4～PB.0 of " 8155 " respectively.8 incoming lines of display meet the PA.0～PA.7 of " 8155 " respectively.Output circuit (5) mainly is made up of integrated circuit " 74LS04 " and three tunnel output channels, " " 9.11.13 " of 74LS04 connects " 10 of the middle control timer " 8253 " of signal processing circuit (4) to integrated circuit, 13,17 " end; the output terminal of its " 74LS04 " is respectively " 8,10,12 " end; each output terminal is connected with an output channel; each road output channel is mainly by a photoelectronic coupler; operational amplifier of 4 transistors is formed; the input end of photoelectronic coupler connects the output terminal of " 74LS04 " by a resistance; the signal output part of its photoelectronic coupler meets transistor BG1, this transistorized collector is connected with the input end of operational amplifier, the output terminal of this operational amplifier " 353 " is by the base stage of resistance and driving transistors " BG2 ", and the input end of its emitter and operational amplifier also is connected to a resistance R
fAnd capacitor C
f, the collector of BG2 is connected with the collector of transistor BG3 and the base stage of base stage and transistor BG4 simultaneously, and drive signal is by the collector output of transistor BG4.
The course of work of this instrument is as follows, the voltage signal of thermopair is through prime low-pass filtering, preposition amplification, the follower of signal input channel in the input circuit (1), send into multi-way switch at last, computing machine is selected conducting to multi-way switch, signal carries out the signal amplification second time again after sending multi-way switch, behind the voltage/frequency transducer, analog-signal transitions is become digital signal, this digital signal is imported single chip microcomputer " 8031 " after photoelectricity isolation and shaping." 8031 " compare preset temperature and actual temperature, control timer " 8253 " output pulse width modulated control amount, it is exported through anti-phase isolation, pulsewidth, voltage-regulation, sampling, maintenance, electric current, voltage transformation, and the Control current of output 0～10mA drives the controllable silicon triggering system." 74LS04 " is phase inverter, and its output is the Control current of 0～10mA." 6264 " are RAM, deposit the relevant input value of man-machine conversation in." 27128 " are EPROM, solidify relevant executive routine." 8155 " are to handle keyboard and display action.
Adopt duplex high precision program temperature controller of the present utility model, its advantage is: 1. the way of this temperature controller control is many, can control three tunnel temperature simultaneously, and general temperature controller, if will control three the tunnel, three cover control instruments then must be arranged, and temperature controller cost that this instrument is general relatively and volume all are reduced to original 1/3rd.2. precision height.The temperature-controlled precision of this instrument can reach 0.2 grade, and this requires very high occasion also can be suitable for to temperature control, so its scope of application is very wide.3. degree of regulation is much larger than general temperature controller.4. the time set wide ranges reaches 0～9999 minute/section, and common temperature controller has only 0～1500 minute/section.5. this instrument has automatic zero set (AZS), and multiple subsidiary function such as timing reset makes the work of this instrument more reliable.6. one of major advantage of this instrument is to have solved to adopt Wolfram rhenium heat electric couple to carry out the technical barrier of thermometric, temperature control, makes the precision of temperature control and the performance of instrument all reach a new height.
Fig. 1 is a structured flowchart of the present utility model.
Fig. 2 is the electrical schematic diagram of input circuit in the utility model.
Fig. 3 is the schematic diagram of signal processing circuit in the utility model.
Fig. 4 is the electrical schematic diagram of output circuit in the utility model.
Fig. 5 is the schematic diagram of ambient-temperature compensation circuit in the utility model.
Specific embodiments of the present utility model is as follows: its structure of three tunnel input channels in the input circuit (1) is just the same, therein in each road, signal amplifies the operational amplifier of operational amplifier employing " OP07 " model of usefulness, and follower thereafter is the operational amplifier of " 353 " model.The model of multi-way switch is " CD4051 ".Voltage/frequency conversion (2) circuit adopts integrated circuit " QD8106 ".The model that little process chip adopts in the signal Processing (4) is " 8031 ", and the model of ram memory is " 6264 ", and the model of EPROM is " 27128 ", and the model of control timer is " 8253 ", and the model of latch is " 74LS373 ".In output circuit, phase inverter adopts integrated circuit " 74LS04 ", and the model of photoisolator is " 4N25 ", and the model of transistor BG1, BG2 is 3DGB0, and the model of BG4, BG3 is 3CG5F, and the model of operational amplifier is " 353 ".According to the above, just can make duplex high precision program temperature controller of the present utility model with reference to its electrical schematic diagram.
Claims (2)
1, a kind of duplex high precision program temperature controller is by signal input circuit, signal processing circuit and signal output apparatus are formed, it is characterized in that this controller is mainly by input circuit (1), voltage/frequency conversion (2), photoelectricity is isolated (3), signal Processing (4), output circuit (5) is formed, wherein input circuit comprises three road signal input channels, one road ambient-temperature compensation circuit and multi-way switch and signal amplifying part branch, the output terminal of ambient-temperature compensation circuit and three road signal input channels is connected to " 12～15 " end of multi-way switch " CD4051 " respectively, signal Processing (4) is mainly by single chip microcomputer " 8031 ", latch " 74LS373 ", memory " 6264 ", " 27128 " and control timer " 8253 " are formed, DO～the D7 of the P0.0～P0.7 of " 8031 " and memory " 6264 " and " 27128 " and integrated circuit " 8155 " joins, " 1-8 " pin with control timer " 8253 " joins simultaneously, output circuit (5) is made up of integrated circuit " 74LS04 " and three tunnel output channels, the pin of " 74LS04 " " 9; 11; 13 " joins the pin of " 74LS04 " " 8; 10 with the pin " 10; 13; 17 " of control timer " 8253 " respectively, 12 " be connected with three tunnel output channels respectively.
2, duplex high precision program temperature controller according to claim 1, it is characterized in that the output channel in the described output circuit (5) is formed with the circuit of spline structure by three the tunnel, wherein the input end of the emitter of transistor BG2 and operational amplifier " 353 " and be connected to a resistance R
fWith a capacitor C
f, the collector of transistor BG2 links to each other with the collector of transistor BG3 and the base stage of base stage and transistor BG4 simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90211503 CN2072244U (en) | 1989-12-30 | 1989-12-30 | Multi-channel high-precision program controller for temp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90211503 CN2072244U (en) | 1989-12-30 | 1989-12-30 | Multi-channel high-precision program controller for temp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2072244U true CN2072244U (en) | 1991-02-27 |
Family
ID=4891288
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90211503 Withdrawn CN2072244U (en) | 1989-12-30 | 1989-12-30 | Multi-channel high-precision program controller for temp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2072244U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109540314A (en) * | 2018-12-21 | 2019-03-29 | 核动力运行研究所 | A kind of multi-channel thermocouple signal generation apparatus |
| CN115903942A (en) * | 2021-09-23 | 2023-04-04 | 南亚科技股份有限公司 | Temperature delay device and temperature control system |
-
1989
- 1989-12-30 CN CN 90211503 patent/CN2072244U/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109540314A (en) * | 2018-12-21 | 2019-03-29 | 核动力运行研究所 | A kind of multi-channel thermocouple signal generation apparatus |
| CN109540314B (en) * | 2018-12-21 | 2024-09-13 | 核动力运行研究所 | Multipath thermocouple signal generating device |
| CN115903942A (en) * | 2021-09-23 | 2023-04-04 | 南亚科技股份有限公司 | Temperature delay device and temperature control system |
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| C06 | Publication | ||
| PB01 | Publication | ||
| 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 |