CN201251490Y - Cold and hot energy integrating instrument - Google Patents
Cold and hot energy integrating instrument Download PDFInfo
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- CN201251490Y CN201251490Y CNU2008202000523U CN200820200052U CN201251490Y CN 201251490 Y CN201251490 Y CN 201251490Y CN U2008202000523 U CNU2008202000523 U CN U2008202000523U CN 200820200052 U CN200820200052 U CN 200820200052U CN 201251490 Y CN201251490 Y CN 201251490Y
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Abstract
The utility model discloses a cold and hot energy integrating instrument, which is a high-precision, highly stable and intelligent cold and hot energy measurement instrument capable of being conveniently mounted and used. The cold and hot energy integrating instrument is provided with a flow detection module, a temperature detection module, an A/D conversion module, an LCD display module, a communication module, a memory module, a central processing module, a power supply module and an alarm output module; wherein, the flow detection module is connected with a current signal type electromagnetic flowmeter; an electronic change-over switch is arranged between the A/D conversion module and the temperature detection module as well as the flow detection module and can be flexibly switched between temperature detection and flow detection under the control of the central processing module; and the communication module adopts 485 or M-BUS bus transmission for networking in order to implement remote management. The utility model is mainly applied in the internal refrigeration and heating measurement of an intelligent building.
Description
Technical field
The utility model relates to cold and hot energy meter field of instrumentation technology, particularly a kind of cold and hot energy integrating instrument that system's heat exchange amount is carried out integrating.
Background technology
Existing a kind of cold and hot can composition by flow sensor, inlet temperature sensor, outlet temperature sensor, central processing unit, display module, communication module and power supply by table with AD translation function, central processing unit input end connection traffic sensor, inlet temperature sensor, outlet temperature sensor are formed flow pulse number, inlet temperature sensor resistance, outlet temperature sensor resistance multi-channel analog signal acquisition circuit, central processing unit carries out the communication transmission with the simulating signal process computing of gathering by display module with through communication module.Because the AD converter in the single-chip microcomputer generally is 8 or 10, precision is lower, and the central processing unit input end directly is connected with import and export temperature sensor output terminal with flow sensor, then needs two AD converter, thereby improved manufacturing cost, also be difficult to satisfy its high-precision requirement.Because flow sensor is to adopt the mechanical type rotor flowmeter, rotor places in the passage of fluid, is blocked by ducted dirt foreign material easily, influence measuring accuracy, even can't measure, and cause rotor wear and problem such as difficult in maintenance, and its error is big when low discharge, precision is low.The employing ultrasonic flow meter is also arranged, though the composition or the impurity of medium is not had strict requirement, its price is too high.More existing cold and hotly can show its temperature survey and adopt and have the mimic channel that computing is amplified, tend to cause bigger temperature drift, measuring accuracy is low, manufacturing process is complicated.
Summary of the invention
The purpose of this utility model is to provide a kind of high precision, high stability, intellectuality and cold and hot energy integrating instrument easy to install.
The technical solution that the utility model proposed is such: a kind of cold and hot energy integrating instrument, comprise the flow detection module, temperature detecting module, the AD modular converter, the LCD display module, communication module, memory module, central processing module, power module, alarm output module, temperature detecting module detects the resistance of the temperature sensor that is installed on inlet channel and outlet conduit and calculates inflow temperature and leaving water temperature, the AD modular converter is used for central processing module is handled and be input to the output valve of the output valve of flow detection module and temperature detecting module, central processing module carries out integrating according to input value to energy and shows by the LCD display module, memory module is used to preserve all temperature, flow, energy and relevant works parameter, communication module is used to carry out telecommunication, alarm output module is used for flow, output alarm signal when unusual appears in temperature, and described flow detection module is connected to the current signal type electromagnetic flowmeter; Be provided with electronic commutator between described AD modular converter and temperature detecting module and flow detection module, this electronic commutator can switch between temperature detection and flow detection under central processing module control flexibly; Described communication module employing 485 or M-BUS bus transfer are carried out networking, implement telemanagement.
Described AD modular converter adopts the AD chip of 16 high precision, low temperature drift.
The utility model flow rate calculation principle: by the outlet temperature of outlet conduit, the temperature in and the pipeline instantaneous delivery of inlet channel are measured in real time, and, accumulate to using cold or heat according to thermodynamics energy computing formula.
Described flow detection module can detect the electromagnetic flowmeter of 4-20mA current signal type.
Described AD modular converter adopts the AD chip of 16 high precision, low temperature drift, and the measuring accuracy height by central processing module control high-velocity electrons switch, can switch between temperature detection and flow detection simultaneously flexibly.
Described communication module can adopt 485 or the M-BUS bus, can external up to a hundred node, by node data are in time uploaded.
Compared with prior art, the utlity model has following beneficial effect:
(1) owing to is provided with the AD modular converter of 16 high precision, low temperature drift in the central processing module outside, and between AD modular converter and temperature detecting module and flow detection module, be connected to high-velocity electrons switch by central processing module control, can switch fast between temperature detection and flow detection, flexible, thereby, saved an AD converter, reduce manufacturing cost, simplified manufacturing process, improved system's accuracy of detection greatly.
(2) owing to flow detection module in this cold and hot energy integrating instrument is the electromagnetic flowmeter of sensed current signal type, the measurement passage of this flowmeter is the smooth straight of one section no choked flow detection piece, mechanical moving element is not housed in the pipe, tube fluid can not get clogged basically, and this cold and hot energy integrating instrument is in the duty of high stability.
The utility model is mainly used in the intelligent building interior refrigeration and heating metering.
Description of drawings
Fig. 1 is the electric functional-block diagram of an embodiment of the utility model.
Embodiment
By following embodiment the utility model is further elaborated.
As shown in Figure 1, a kind of cold and hot energy integrating instrument is made up of flow detection module 9, temperature detecting module 8, AD modular converter 6, electronic commutator 7, LCD display module 3, communication module 4, central processing module 2, alarm output module 5 and power module 1.The flow signal that flow detection module 9 sensed current signal type electromagnetic flowmeter 9-1 are collected in this cold and hot energy integrating instrument, temperature detecting module 8 detects the resistance of the temperature sensor PT1000 that is installed on inlet channel and outlet conduit respectively, and calculates inflow temperature and leaving water temperature.The testing result of the testing result of flow detection module 9 and temperature detecting module 8 is input to central processing module 2 after AD modular converter 6 is handled, central processing module 2 carries out integrating according to heat enthalpy computing formula to energy, and show with the menu mode human-computer interaction interface by LCD display module 3, central processing module 2 is with all temperature, flow, real time data such as energy and engineering parameter is kept in the memory module in real time, work as flow, pass through alarm output module 5 output alarm signals when appearance such as temperature is unusual, this cold and hot energy integrating instrument also can carry out networking with RS485 or MBUS transmission by communication module 4, is convenient to telemanagement.
Flow detection module 9 connects current signal type electromagnetic flowmeter 9-1, and the current signal of this flowmeter is gathered.Described current signal type electromagnetic flowmeter 9-1 adopts the principle of work of Faraday's electromagnetic induction law, be that conductor produces induction electromotive force at its two ends during cutting magnetic line movement in magnetic field, it measures passage is the smooth straight of one section no choked flow detection piece, can not block, mechanical moving element is not housed yet, when having solved existing employing mechanical rotor formula flowmeter because of placing rotor in the measuring channel easily by ducted deposition dirt, foreign material block, wearing and tearing, thereby influence the difficulty of its job stability and maintenance, in the present embodiment, current signal type electromagnetic flowmeter 9-1 is output as the current signal of 4-20mA, in flow detection module 9, change this current signal into voltage signal, be input to AD modular converter 6 again, central processing module 2 is according to the transformation result of AD modular converter 6, handle through internal processes, calculate current flow.
Because the precision of the flow detection module 9 of this integrating instrument and temperature detecting module 8, adopts reference precision in the sheet all than higher in the present embodiment be that 16 AD chips of high precision ADS1110 of 2.048+0.05%, temperature drift 5ppm/ ℃ forms AD modular converter 6.Directly carry and precision has only 8-10 A/D conversion with this A/D modular converter that replaces prior art, thereby make this integrating instrument reach high-precision requirement by CPU inside.
Present embodiment has adopted the high-velocity electrons switch of being made up of CD4066 and CD1052 7, this high-velocity electrons switch 7 places between temperature detecting module 8, flow detection module 9 and the AD modular converter 6 as shown in Figure 1, switch between temperature detecting module 8 and flow detection module 9 by central processing module 2 these high-velocity electrons switches 7 of control, and testing result is input to AD modular converter 6, make and under dependable flow and the high-precision prerequisite of temperature, reduced manufacturing cost.
The communication module 4 of this integrating instrument can compatible M-BUS communication interface and RS485 communication interface.The user can select for use according to different demands, if select the M-BUS connection for use, it is less then to connect up, but cost is higher relatively; If select the RS485 connection for use, then cost is relatively low, can also connect various water power tables and other instrument, but wiring is more relatively.
Claims (2)
1, a kind of cold and hot energy integrating instrument, comprise the flow detection module, temperature detecting module, the AD modular converter, the LCD display module, communication module, memory module, central processing module, power module, alarm output module, temperature detecting module detects the resistance of the temperature sensor that is installed on inlet channel and outlet conduit and calculates inflow temperature and leaving water temperature, the AD modular converter is used for central processing module is handled and be input to the output valve of the output valve of flow detection module and temperature detecting module, central processing module carries out integrating according to input value to energy and shows by the LCD display module, memory module is used to preserve all temperature, flow, energy and relevant works parameter, communication module is used to carry out telecommunication, alarm output module is used for flow, output alarm signal when unusual appears in temperature, and it is characterized in that: described flow detection module is connected to the current signal type electromagnetic flowmeter; Be provided with electronic commutator between described AD modular converter and temperature detecting module and flow detection module, this electronic commutator can switch between temperature detection and flow detection under central processing module control flexibly; Described communication module employing 485 or M-BUS bus transfer are carried out networking, implement telemanagement.
2, cold and hot energy integrating instrument according to claim 1 is characterized in that: described AD modular converter adopts the AD chip of 16 high precision, low temperature drift.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202000523U CN201251490Y (en) | 2008-08-29 | 2008-08-29 | Cold and hot energy integrating instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202000523U CN201251490Y (en) | 2008-08-29 | 2008-08-29 | Cold and hot energy integrating instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201251490Y true CN201251490Y (en) | 2009-06-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202000523U Expired - Fee Related CN201251490Y (en) | 2008-08-29 | 2008-08-29 | Cold and hot energy integrating instrument |
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| CN (1) | CN201251490Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102004006A (en) * | 2010-12-01 | 2011-04-06 | 天津地热勘查开发设计院 | Uncompensated digital temperature measurement system |
| CN105115630A (en) * | 2015-09-25 | 2015-12-02 | 广东艾科技术股份有限公司 | Integrated electromagnetic calorimeter |
| CN107024298A (en) * | 2017-05-27 | 2017-08-08 | 山东泰莱电气股份有限公司 | The temperature sensing device and method communicated based on M BUS interfaces |
-
2008
- 2008-08-29 CN CNU2008202000523U patent/CN201251490Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102004006A (en) * | 2010-12-01 | 2011-04-06 | 天津地热勘查开发设计院 | Uncompensated digital temperature measurement system |
| CN105115630A (en) * | 2015-09-25 | 2015-12-02 | 广东艾科技术股份有限公司 | Integrated electromagnetic calorimeter |
| CN107024298A (en) * | 2017-05-27 | 2017-08-08 | 山东泰莱电气股份有限公司 | The temperature sensing device and method communicated based on M BUS interfaces |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090603 Termination date: 20160829 |
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| CF01 | Termination of patent right due to non-payment of annual fee |