CN111309075A - Multi-point temperature control system based on single bus - Google Patents
Multi-point temperature control system based on single bus Download PDFInfo
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- CN111309075A CN111309075A CN202010288408.9A CN202010288408A CN111309075A CN 111309075 A CN111309075 A CN 111309075A CN 202010288408 A CN202010288408 A CN 202010288408A CN 111309075 A CN111309075 A CN 111309075A
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- temperature
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- temperature control
- chip microcomputer
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/30—Automatic controllers with an auxiliary heating device affecting the sensing element, e.g. for anticipating change of temperature
Abstract
The invention discloses a multipoint temperature control system based on a single bus, and relates to the field of multipoint temperature control. This based on single bus multiple spot temperature control system includes the singlechip, intelligent temperature sensor, the keyboard circuit, accuse temperature circuit and temperature display screen, singlechip electric connection has power supply circuit, singlechip electric connection has intelligent temperature sensor, singlechip electric connection has the temperature display screen, singlechip electric connection has the keyboard circuit, singlechip electric connection has accuse temperature circuit, singlechip electric connection has failure alarm circuit, the keyboard circuit includes A keyboard circuit and B keyboard circuit, accuse temperature circuit electric connection has multiunit temperature adjustment module, every group temperature adjustment module all includes a heater, a refrigerator and two relays, only can start one between two relays. The multipoint temperature control system based on the single bus has the function of sending out fault alarm when the system cannot adjust normal temperature.
Description
Technical Field
The invention relates to the technical field of multipoint temperature control, in particular to a multipoint temperature control system based on a single bus.
Background
The temperature is a physical quantity closely related to daily birth life of people, and in some production, medical treatment and scientific research fields, the temperature is required to be controlled within a certain temperature range, so that the temperature is generally automatically controlled through a single chip microcomputer, a temperature sensor and a temperature adjusting device, and in order to control the temperatures of a plurality of places, the temperatures of the plurality of places are controlled through the plurality of temperature sensors and the single chip microcomputer, namely, the single-bus-based multipoint temperature control system is obtained.
The existing single-bus multipoint temperature control system only can control the temperatures of a plurality of places, but under the long-time use load, the temperature sensor, the circuit and the device for adjusting the temperatures are likely to or fail, so that the whole system cannot effectively adjust and control the temperatures of the plurality of places, further the temperature is continuously increased or reduced, great influence is caused on the production of fields requiring a certain range of temperatures, the existing single-bus multipoint temperature control system cannot detect whether the system can adjust the normal temperature or not, if the system can send out a fault alarm when the system cannot adjust the normal temperature, a user is reminded that the system fails and the temperature is abnormal, the system is maintained in time, the affected degree can be greatly reduced, and the single-bus multipoint temperature control system based on the condition that the fault alarm can be sent out when the system cannot adjust the normal temperature is needed Provided is a system.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention discloses a single-bus-based multipoint temperature control system, which aims to solve the problems in the background art.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme: the multi-point temperature control system based on the single bus comprises a single chip microcomputer, intelligent temperature sensors, a keyboard circuit, a temperature control circuit and a temperature display screen, wherein the single chip microcomputer is electrically connected with a power supply circuit, the single chip microcomputer is electrically connected with the intelligent temperature sensors, the intelligent temperature sensors are arranged in a plurality of groups, the intelligent temperature sensors are mutually independent, the single chip microcomputer is electrically connected with the temperature display screen, the single chip microcomputer is electrically connected with the keyboard circuit, the single chip microcomputer is electrically connected with the temperature control circuit, and the single chip microcomputer is electrically connected with a fault alarm circuit;
the keyboard circuit comprises a keyboard circuit A and a keyboard circuit B, the keyboard circuit A is electrically connected with the single chip microcomputer and controls a first temperature range of starting of the temperature control circuit, and the keyboard circuit B is electrically connected with the single chip microcomputer and controls a second temperature range of starting of the fault alarm circuit;
the temperature control circuit is electrically connected with a plurality of groups of temperature adjusting modules, the temperature control modules are independent and do not influence each other, and each group of temperature adjusting modules is respectively arranged at the position of each intelligent temperature sensor;
each group of temperature adjusting modules comprises a heater, a refrigerator and two relays, one relay is electrically connected with the heater, the other relay is electrically connected with the refrigerator, and only one relay can be started.
Preferably, the intelligent temperature sensor has a function of measuring the temperature of the position, and processes the received temperature digital signal and transmits the processed temperature digital signal to the single chip microcomputer.
Preferably, the singlechip can receive the temperature digital signal that a plurality of intelligent temperature sensor transmitted, the singlechip is handled every temperature digital signal who receives and is fed back to the temperature display screen, the temperature display screen utensil carries out the function that shows simultaneously with the temperature that every intelligent temperature sensor measured.
Preferably, the single chip microcomputer processes each received temperature digital signal and feeds the processed temperature digital signal back to the keyboard circuit A, and the single chip microcomputer processes each received temperature digital signal and feeds the processed temperature digital signal back to the keyboard circuit B.
Preferably, the second temperature range set by the keyboard circuit B includes the first temperature range set by the keyboard circuit a.
Preferably, the keyboard circuit a can compare each current temperature digital signal received from the single chip microcomputer with the set first temperature range, and the keyboard circuit a controls the on and off of the temperature control circuit through the comparison result of each current temperature digital signal with the set first temperature range.
Preferably, the keyboard circuit B can compare each current temperature digital signal received from the single chip microcomputer with the set second temperature range, and the keyboard circuit B controls the on/off of the fault alarm circuit through the comparison result of each current temperature digital signal with the set second temperature range.
Preferably, the temperature control circuit is started to have a function of controlling a plurality of groups of temperature adjusting modules to work respectively, and each group of temperature control module has a function of adjusting the temperature of the position of each intelligent temperature sensor.
Preferably, the temperature control module has a function of controlling a relay to enable the heater to work so as to increase the temperature of the position where the corresponding intelligent temperature sensor is located.
Preferably, the temperature control module has a function of controlling another relay to enable the refrigerator to work so as to reduce the temperature of the position where the corresponding intelligent temperature sensor is located.
The invention discloses a single-bus-based multipoint temperature control system, which has the following beneficial effects:
1. the single-bus-based multi-point temperature control system is characterized in that by arranging a keyboard circuit A and a keyboard circuit B, because the first temperature range set by the a keypad circuit is within the second temperature range set by the B keypad circuit, when the current temperature digital signal is in the first temperature range, the temperature control circuit and the fault circuit are not started, when the current temperature digital signal is not in the first temperature range but in the second temperature range, the temperature control circuit is started to carry out heating or cooling operation, when the current temperature digital signal is not in the second temperature range, the temperature control circuit or the temperature control module is in fault, temperature rising or temperature lowering work cannot be carried out, the fault alarm circuit can be started to send out fault alarm to remind a user that the system is in fault and abnormal temperature, and the system has the function of sending out the fault alarm when the system cannot carry out normal temperature adjustment.
2. The multi-point temperature control system based on the single bus is provided with a singlechip, intelligent temperature sensors, an A keyboard circuit, a temperature control circuit and a temperature adjusting module, wherein the intelligent temperature sensors respectively measure the temperature of multiple points, and transmits the temperature digital signal to the singlechip, the first temperature range set by the A keyboard circuit can be compared with the temperature measured by each intelligent temperature sensor, when the temperature measured by any one intelligent temperature sensor exceeds or is lower than a first temperature range, the temperature control circuit starts to control the heater in the temperature adjusting module at the corresponding position to start the refrigerator so as to cool or heat the position with overhigh or overlow temperature, and the temperature control circuit can work by controlling a plurality of temperature control modules, and the system has the function of controlling the temperature of a plurality of temperature measuring points.
Drawings
FIG. 1 is a general flow diagram of the present invention;
FIG. 2 is a schematic diagram of a temperature control module according to the present invention;
fig. 3 is a general process diagram of the present invention.
Detailed Description
The embodiment of the invention discloses a multi-point temperature control system based on a single bus, which comprises a single chip microcomputer, an intelligent temperature sensor, a keyboard circuit, a temperature control circuit and a temperature display screen, wherein the single chip microcomputer is electrically connected with a power circuit, the single chip microcomputer can be an AT89C51 type single chip microcomputer, the AT89C51 type single chip microcomputer is a low-loss and high-performance single chip microcomputer, a memory which can be repeatedly programmed on line and quickly erased and quickly writes programs is arranged in the single chip microcomputer, and the AT89C51 type single chip microcomputer can form a real single chip microcomputer minimum application system, has the functions of reducing the system volume, increasing the system reliability and reducing the system cost, and supplies power to the AT89C51 type single chip microcomputer through the power circuit.
The single chip microcomputer is electrically connected with an intelligent temperature sensor, the intelligent temperature sensor has a function of measuring the temperature of the position, the intelligent temperature sensor can be a DS18B20 type intelligent temperature sensor, the input/output of the intelligent temperature sensor adopts digital quantity, a command sent from the AT89C51 type single chip microcomputer is received through a single bus connection mode, corresponding processing is carried out according to a protocol inside the DS18B20, the converted temperature value is sent to the AT89C51 type single chip microcomputer in a serial port mode, the AT89C51 type single chip microcomputer simulates the time sequence of DS18B20 through an I0 port according to a communication protocol, the command is sent to the DS18B20 type intelligent temperature sensor, the temperature value is read, and the received temperature digital signal is processed and transmitted to the single chip microcomputer by the intelligent temperature sensor.
The intelligent temperature sensors are arranged in a plurality of modes, temperature measurement is carried out on a plurality of positions through the intelligent temperature sensors, measured temperature digital signals are transmitted to the single chip microcomputer, the intelligent temperature sensors are mutually independent, and the single chip microcomputer can receive the temperature digital signals transmitted by the intelligent temperature sensors.
Singlechip electric connection has the temperature display screen, and the temperature display is connected the back with the singlechip, and the singlechip is handled every temperature digital signal who receives and is fed back to the temperature display screen, and the temperature display screen utensil carries out the function that simultaneous display is carried out every intelligent temperature sensor measured temperature, and the temperature display screen can demonstrate the temperature that a plurality of intelligent temperature sensor measured simultaneously.
The single chip microcomputer is electrically connected with a keyboard circuit, the keyboard circuit comprises a keyboard circuit A and a keyboard circuit B, the keyboard circuit A has a function of controlling temperature adjustment, and the keyboard circuit B has a function of performing fault detection on the temperature measurement and control function of the whole system.
A keyboard circuit and singlechip electric connection and the first temperature range that control temperature circuit started, the singlechip is handled every temperature digital signal who receives and is fed back to A keyboard circuit, and this first temperature range can be compared with the temperature that every intelligence temperature sensor measured.
The A keyboard circuit can compare each current temperature digital signal received from the single chip microcomputer with the set first temperature range, and the A keyboard circuit controls the on-off of the temperature control circuit through the comparison result of each current temperature digital signal and the set first temperature range.
Singlechip electric connection has temperature control circuit, temperature control circuit electric connection has multiunit temperature adjustment module, independent and each other do not influence each other between the multiunit temperature control module, every temperature adjustment module of group sets up respectively in every intelligent temperature sensor position, the temperature that measures as an intelligent temperature sensor surpasss or is less than this first temperature range, all can make temperature control circuit start, come control and the work of the corresponding temperature adjustment module of intelligent temperature sensor, the temperature that makes intelligent temperature sensor position reduces or rises to within the first temperature range.
The start-up of temperature control circuit has the function that steerable multiunit temperature adjustment module carries out work respectively, and temperature control circuit can control every group temperature adjustment module simultaneously and carry out work, can make certain temperature adjustment module carry out the work of heating up, also is the work of cooling down of other certain temperature adjustment module simultaneously.
Each group of temperature adjusting modules comprises a heater, a refrigerator and two relays, one relay is electrically connected with the heater, the other relay is electrically connected with the refrigerator, only one relay can be started, and the refrigerator and the heater in one group of temperature adjusting modules can only be started, namely heating and cooling can not be carried out simultaneously.
When the measured temperature is lower than the first temperature range, the temperature control circuit enables the relay connected with the heater in the corresponding temperature control module to be started, and then the heater works to heat the position of the intelligent temperature sensor with the measured temperature which is too low.
The temperature control module has the function of controlling another relay to enable the refrigerator to work to reduce the temperature of the position where the corresponding intelligent temperature sensor is located, when the measured temperature is higher than the first temperature range, the temperature control circuit enables the relay connected with the refrigerator in the corresponding temperature control module to be started, and then the refrigerator works to reduce the temperature of the position where the intelligent temperature sensor with the measured temperature being too high is located.
This system is through setting up the singlechip, intelligent temperature sensor, A keyboard circuit, temperature control circuit and temperature adjustment module, a plurality of intelligent temperature sensor carry out temperature measurement to the multiple spot respectively, and give the singlechip with temperature digital signal transmission, the first temperature range that A keyboard circuit set up can be compared with the temperature that every intelligent temperature sensor measured, the temperature that measures when arbitrary one intelligent temperature sensor surpasss or is less than first temperature range, the heater in the temperature adjustment module of the corresponding position of temperature control circuit start control is swinging the refrigerator and is starting, cool down or heat up the position that the temperature is too high or low excessively, and temperature control circuit can work through controlling a plurality of temperature control modules, the system has the function that can carry out temperature control to a plurality of temperature measurement points.
The single chip microcomputer is electrically connected with a fault alarm circuit, the single chip microcomputer processes each received temperature digital signal and feeds the temperature digital signal back to the B keyboard circuit, the B keyboard circuit can compare each current temperature digital signal received from the single chip microcomputer with the set second temperature range, and the B keyboard circuit controls the on-off of the fault alarm circuit through the comparison result of each current temperature digital signal and the set second temperature range.
The keyboard circuit B is electrically connected with the singlechip and controls a second temperature range in which the fault alarm circuit is started, when the current temperature digital signal is within the second temperature range, the fault alarm circuit is not started, and when the current temperature digital signal is not within the second temperature range, the fault alarm circuit is started.
The second temperature range set by the keyboard circuit B comprises a first temperature range set by the keyboard circuit A, namely the first temperature range set by the keyboard circuit A is within a second temperature range set by the keyboard circuit B, when the current temperature digital signal is within the first temperature range, the temperature control circuit and the fault circuit are not started, when the current temperature digital signal is not within the first temperature range but within the second temperature range, the temperature control circuit is started to carry out heating or cooling operation, when the current temperature digital signal is not within the second temperature range, namely the temperature control circuit fault or the temperature control module fault, the heating or cooling operation is not carried out, the temperature is not within the second temperature range, at the moment, the fault alarm circuit is started to inform a user that the system has a fault, and the temperature measuring point cannot be heated or cooled, timely maintenance is required.
The system is provided with the keyboard circuit A and the keyboard circuit B, because the first temperature range set by the keyboard circuit A is within the second temperature range set by the keyboard circuit B, when the current temperature digital signal is within the first temperature range, the temperature control circuit and the fault circuit are not started, when the current temperature digital signal is not within the first temperature range but within the second temperature range, the temperature control circuit is started to carry out heating or cooling operation, when the current temperature digital signal is not within the second temperature range, namely, the temperature control circuit is in fault or the temperature control module is in fault, heating or cooling operation is not carried out, the fault alarm circuit is started to send out fault alarm, a user is reminded that the system is in fault and temperature abnormality, and the system has the function of sending out fault alarm when the system cannot carry out normal temperature adjustment.
The working principle is as follows: when the system is used, the plurality of intelligent temperature sensors can measure the temperatures of a plurality of temperature measuring points and transmit the measured temperatures to the single chip microcomputer, and the single chip microcomputer transmits the temperatures measured by each intelligent temperature sensor to the temperature display screen, the A keyboard circuit and the B keyboard circuit. A
The specific numerical value of the temperature measured by each intelligent temperature sensor can be displayed on the temperature display screen, the first temperature range set by the keyboard circuit A is compared with the temperature measured by each intelligent temperature sensor, and when the temperatures measured by all the intelligent temperature sensors are within the first temperature range, namely the temperature of the temperature measuring point is within the allowable range, the temperature control circuit cannot be started.
When the temperature measured by some intelligent temperature sensors exceeds or is lower than the first temperature range, namely the temperature of the temperature measuring point is not within the allowable range, the temperature control circuit is started at the moment, and the temperature control module arranged in the temperature measuring point with abnormal temperature is controlled to work to heat or cool the temperature measuring point, so that the temperature is adjusted to be within the allowable range.
When the temperature of the temperature measuring point exceeds or is lower than the first temperature range, if the temperature control circuit fails or the temperature adjusting module fails, the temperature of the temperature measuring point cannot be adjusted, so that the temperature of the temperature measuring point can be continuously increased or decreased, the temperature of the temperature measuring point exceeds or is lower than the second temperature range again, and the fault alarm circuit is started to send out a fault alarm to remind a user of system failure and temperature abnormity.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. Based on single bus multiple spot temperature control system, including singlechip, intelligent temperature sensor, keyboard circuit, accuse temperature circuit and temperature display screen, its characterized in that: the intelligent temperature monitoring system comprises a single chip microcomputer, a power supply circuit, a plurality of intelligent temperature sensors, a temperature display screen, a keyboard circuit, a temperature control circuit and a fault alarm circuit, wherein the single chip microcomputer is electrically connected with the power supply circuit, the intelligent temperature sensors are arranged in a plurality of intelligent temperature sensors, the intelligent temperature sensors are independent of one another, the single chip microcomputer is electrically connected with the temperature display screen, the keyboard circuit is electrically connected with the single chip microcomputer, the temperature control circuit is electrically connected with the single;
the keyboard circuit comprises a keyboard circuit A and a keyboard circuit B, the keyboard circuit A is electrically connected with the single chip microcomputer and controls a first temperature range of starting of the temperature control circuit, and the keyboard circuit B is electrically connected with the single chip microcomputer and controls a second temperature range of starting of the fault alarm circuit;
the temperature control circuit is electrically connected with a plurality of groups of temperature adjusting modules, the temperature control modules are independent and do not influence each other, and each group of temperature adjusting modules is respectively arranged at the position of each intelligent temperature sensor;
each group of temperature adjusting modules comprises a heater, a refrigerator and two relays, one relay is electrically connected with the heater, the other relay is electrically connected with the refrigerator, and only one relay can be started.
2. The single bus-based multipoint temperature control system of claim 1, wherein: the intelligent temperature sensor has the function of measuring the temperature of the position, and processes and transmits the received temperature digital signal to the single chip microcomputer.
3. The single bus-based multipoint temperature control system of claim 1, wherein: the single chip microcomputer can receive temperature digital signals transmitted by the intelligent temperature sensors, the single chip microcomputer processes each received temperature digital signal and feeds the processed temperature digital signal back to the temperature display screen, and the temperature display screen has the function of displaying the temperature measured by each intelligent temperature sensor at the same time.
4. The single bus-based multipoint temperature control system of claim 1, wherein: the single chip microcomputer processes each received temperature digital signal and feeds the processed temperature digital signal back to the keyboard circuit A, and the single chip microcomputer processes each received temperature digital signal and feeds the processed temperature digital signal back to the keyboard circuit B.
5. The single bus-based multipoint temperature control system of claim 1, wherein: the second temperature range set by the keyboard circuit B comprises the first temperature range set by the keyboard circuit A.
6. The single bus-based multipoint temperature control system of claim 1, wherein: the keyboard circuit A can compare each current temperature digital signal received from the single chip microcomputer with the set first temperature range, and the keyboard circuit A controls the on-off of the temperature control circuit through the comparison result of each current temperature digital signal and the set first temperature range.
7. The single bus-based multipoint temperature control system of claim 1, wherein: the keyboard circuit B can compare each current temperature digital signal received from the single chip microcomputer with the set second temperature range, and controls the on-off of the fault alarm circuit according to the comparison result of each current temperature digital signal and the set second temperature range.
8. The single bus-based multipoint temperature control system of claim 1, wherein: the starting of the temperature control circuit has the function of controlling a plurality of groups of temperature adjusting modules to work respectively, and each group of temperature control module has the function of adjusting the temperature of the position of each intelligent temperature sensor.
9. The single bus-based multipoint temperature control system of claim 1, wherein: the temperature control module has the function of controlling a relay to enable the heater to work so as to improve the temperature of the position where the corresponding intelligent temperature sensor is located.
10. The single bus-based multipoint temperature control system of claim 1, wherein: the temperature control module has the function of controlling another relay to enable the refrigerator to work to reduce the temperature of the position where the corresponding intelligent temperature sensor is located.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010288408.9A CN111309075A (en) | 2020-04-14 | 2020-04-14 | Multi-point temperature control system based on single bus |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010288408.9A CN111309075A (en) | 2020-04-14 | 2020-04-14 | Multi-point temperature control system based on single bus |
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| CN202010288408.9A Pending CN111309075A (en) | 2020-04-14 | 2020-04-14 | Multi-point temperature control system based on single bus |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060225443A1 (en) * | 2005-04-11 | 2006-10-12 | Dominick Tamborra | Refrigerated food safety monitor |
| CN103838268A (en) * | 2012-11-23 | 2014-06-04 | 陕西亚泰电器科技有限公司 | Temperature control system based on single chip microcomputer |
| CN207380580U (en) * | 2017-09-04 | 2018-05-18 | 大连迈科姆科技有限公司 | A kind of temperature controller |
| CN108803708A (en) * | 2018-02-23 | 2018-11-13 | 深圳市物联微电子有限公司 | A kind of Single chip microcomputer temperature control system |
| CN109489846A (en) * | 2018-11-15 | 2019-03-19 | 长安大学 | A kind of portable intelligent wireless temperature acquisition machine and its working method |
-
2020
- 2020-04-14 CN CN202010288408.9A patent/CN111309075A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060225443A1 (en) * | 2005-04-11 | 2006-10-12 | Dominick Tamborra | Refrigerated food safety monitor |
| CN103838268A (en) * | 2012-11-23 | 2014-06-04 | 陕西亚泰电器科技有限公司 | Temperature control system based on single chip microcomputer |
| CN207380580U (en) * | 2017-09-04 | 2018-05-18 | 大连迈科姆科技有限公司 | A kind of temperature controller |
| CN108803708A (en) * | 2018-02-23 | 2018-11-13 | 深圳市物联微电子有限公司 | A kind of Single chip microcomputer temperature control system |
| CN109489846A (en) * | 2018-11-15 | 2019-03-19 | 长安大学 | A kind of portable intelligent wireless temperature acquisition machine and its working method |
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Application publication date: 20200619 |