CN206488401U - A kind of load-type ice measuring device - Google Patents
A kind of load-type ice measuring device Download PDFInfo
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- CN206488401U CN206488401U CN201720028052.9U CN201720028052U CN206488401U CN 206488401 U CN206488401 U CN 206488401U CN 201720028052 U CN201720028052 U CN 201720028052U CN 206488401 U CN206488401 U CN 206488401U
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Abstract
The utility model discloses a kind of load-type ice measuring device, including：Central processing unit（1）, temperature sensor signal processing module（2）, temperature sensor（6）And power module（4）, temperature sensor signal processing module（2）Receive temperature sensor（6）The temperature signal of detection, central processing unit is sent into after carrying out signal transacting（1）, in addition to pressure sensor signal processing module（3）With pressure sensor group（7）, pressure sensor signal processing module（3）Receive pressure sensor group（7）The signal related to ice amount of detection, central processing unit is sent into after carrying out signal transacting（1）.The apparatus structure is simple, cost is low, it is possible to achieve the measurement of continuous total ice amount, can solve overall ice condition in exo-melting ice system, total ice storage amount information of the precisely controlled needs of energy, it is ensured that the realization of maximum energy-saving control.
Description
Technical field
The utility model belongs to field of air conditioning, is related to a kind of ice measuring device of ice storage air conditioner, more particularly to a kind of
Load-type ice measuring device.
Background technology
With the development of modern society, energy problem increasingly protrudes, and ice storage central air-conditioning is maximally effective as thermoelectricity
The energy adjustment means of peak load shifting, are more and more applied in Large Central Air Conditioning System system, when crest electricity price compares trough
When electricity price is more than double, with good economic benefit, while the generated energy of thermoelectricity can be reduced, thermoelectricity integrated application effect is improved
Rate, with good social benefit.It is coiled pipe type ice storing device that most ice storage units is applied in ice storage air conditioner, actually should
In, in order to improve energy utilization rate, it is desirable to which the cold storage capacity of trough-electricity period can all be efficiently applied to peak period.So may be used
To realize the optimum utilization of the energy.System ice storage amount is mainly measured by ice thickness sensor（Particularly exo-melting ice system）, and mesh
Preceding ice thickness sensor price is very high, and low precision, can only obtain the measurement result of several points, and measurement result is extensive, with
The accurate control needed, the requirement for pursuing optimum energy-saving effect differs greatly.
Utility model content
In order to solve the above problems, the utility model discloses a kind of load-type ice measuring device, including：Center processing
Device, temperature sensor signal processing module, temperature sensor and power module, temperature sensor signal processing module receive temperature
The temperature signal of sensor detection is spent, carries out sending into central processing unit after signal transacting, in addition to pressure sensor signal processing
Module and pressure sensor group, pressure sensor signal processing module receive the letter related to ice amount of pressure sensor group detection
Number, send into central processing unit after carrying out signal transacting.
Wherein, pressure sensor group includes two pressure sensors, and pressure sensor top is fixed on by fixed support
On coil-pipe water tank wall, pressure sensor bottom is fixed on coiled tube supports frame, and pressure sensor is connected to pressure by lead and passed
Sensor signal processing module.
Wherein, pressure sensor group detects the buoyancy of coil pipe Water in Water Tanks, and the buoyancy of its reclaimed water is related to ice amount, and ice amount is got over
Many, buoyancy is bigger.
Wherein, temperature sensor is arranged on coiled tube supports frame, and temperature sensor signal is passed the signal to by lead
Processing module, sensing point and the coil-pipe water tank bottom of temperature sensor keep certain distance.
Wherein, pressure sensor signal processing module includes the amplification that resistance R4, resistance R5 and instrument amplifier AD620 are constituted
Circuit, for by the electric signal amplification of pressure sensor, wherein resistance R5 the first pin to be connected to ground, crus secunda and pressure sensing
It is connected after the signal negative terminal of device group is in parallel with instrument amplifier AD620 crus secunda, resistance R4 the first pin and instrument amplifier AD620
The connection of the first pin, resistance R4 crus secunda and instrument amplifier AD620 octal connection, instrument amplifier AD620 the 3rd pin
It is connected with the signal anode of pressure sensor group, instrument amplifier AD620 octal connection, instrument amplifier AD620 the 6th pin
It is connected to fourth pin of the network marked as iecAD of central processing unit.
Wherein, temperature sensor signal processing module includes resistance R1, resistance R2, resistance R3, resistance R6 and filter capacitor
C2, resistance R1 the first pin and resistance R2 the first pin and joining power, resistance R1 crus secunda and resistance R3 the first pin
Tie point is connected to first pin of the network marked as A0.0 of central processing unit, resistance R2 crus secunda and resistance R6 the first pin and
Filter capacitor C2 the first pin tie point is connected to crus secunda of the network marked as PT1000 of central processing unit, the second of resistance R3
The crus secunda and filter capacitor C2 crus secunda earth of pin and resistance R6, wherein resistance R6 is variable resistor, corresponding to temperature
Spend sensor.
Wherein, pressure sensor signal processing module and temperature sensor signal processing module are sent to central processing unit
Two voltage signals partner differential signal.
Wherein, in addition to wireless RENS communication modules, for the dynamic for the icing amount for measuring ice measuring device in real time
Signal is sent to host computer.
Wherein, load-type ice measuring device corrects the result of measurement by calibrating zero point automatically.
Device of the present utility model measures the dynamic value and temperature value of icing amount in real time, and Dynamic Signal is passed through wireless RENS
Communication module is sent to PC control software, and PC control software obtains icing rate curve by analyzing icing signal,
According to icing rate curve, adjusting device operational factor and control strategy reach the purpose of optimal control：Energy consumption can be reduced,
And equipment is in " health " running status as far as possible, with the service life of extension device.
Load-type ice measuring device can obtain the measurement signal of one group of consecutive variations icing amount, can pass through automatic school
Accurate " zero point " reaches the purpose accurately measured to correct the result of measurement.
The beneficial effects of the utility model are：（1）Simple in construction, cost is low；（2）It can realize that continuous total freeze measures
Amount, total ice amount information of the precisely controlled needs of energy（Ice storage amount）, it is ensured that the realization of maximum energy-saving control.
Brief description of the drawings
Fig. 1：The electrical structure schematic block diagram of load-type ice measuring device；
Fig. 2：The pressure sensor and temperature sensor mounting structure schematic diagram of Ice storage coiled pipe；
Fig. 3：The circuit theory diagrams of load-type ice measuring device.
Description of reference numerals：
1. central processing unit；2. temperature sensor signal processing module；
3. pressure sensor signal processing module；4. power module；
5. wireless RENS communication modules；6. temperature sensor；
7. pressure sensor group；8. coiled tube supports frame
9. pressure sensor fixed support；10. coil-pipe water tank；
11. coil pipe.
Embodiment
The utility model is specifically described below in conjunction with the accompanying drawings.
Referring to accompanying drawing 1, load-type ice measuring device mainly includes：Central processing unit 1, temperature sensor signal processing mould
Block 2, pressure sensor signal processing module 3, power module 4, wireless RENS communication modules 5, temperature sensor 6 and pressure sensing
Device group 7.In use, central processing unit 1 and temperature sensor signal processing module 2, pressure sensor signal processing module 3, electricity
Source module 4 and wireless RENS communication modules 5 are electrically connected.Accompanying drawing 2 and accompanying drawing 3 are exactly specific implementation detail.
Pressure sensor group 7 includes two pressure sensors, and pressure sensor is fixed on coil pipe above with fixed support 9
It is fixed on water tank wall, below pressure sensor on coiled tube supports frame 8, pressure sensor is connected to pressure sensor by lead
Signal processing module 3.Temperature sensor 6 is also mounted on coiled tube supports frame 8, and temperature sensor is passed the signal to by lead
Signal processing module, sensing point and the coil-pipe water tank distance from bottom of temperature sensor 6 are 20cm or so.
Model C8051F350 single-chip microcomputer of the central processing unit 1 from the production of SILICON LAB S. A..In this single-chip microcomputer
Tool 24AD converters are put, and multiplication factor can select 1 times, 2 times, 4 times, 8 times, 16 times, 32 times, 64 times, 128 times, measurement is logical
Road can be calibrated automatically, eliminated systematic error, can be obtained very high measurement accuracy, and this function exactly the utility model is filled
Required for putting.
The circuit diagram of temperature sensor signal processing module 2 is shown in Fig. 3, including resistance R1, resistance R2, resistance R3, resistance R6
With filter capacitor C2, wherein resistance R6 is the temperature sensor 6 in variable resistor, that is, accompanying drawing 2, and what is selected here is Shanghai
The PT1000 RTDs of nine trade finite instrument companies production；PT1000 resistance value can change, zero degree with the change for writing temperature
When resistance be 1.000K.Resistance R1 the first pin and resistance R2 the first pin and joining power VCC (3.3V), the second of resistance R1
Pin and resistance R3 the first pin tie point are connected to the first pin of central processing unit 1（Network is marked as A0.0）, the second of resistance R2
Pin is connected to the crus secunda of central processing unit 1 with resistance R6 the first pin and filter capacitor C2 the first pin tie point（Network label
For PT1000）, resistance R3 crus secunda and resistance R6 crus secunda and filter capacitor C2 crus secunda earth, wherein resistance
R1, resistance R2 and resistance R3 are 1K high-accuracy resistance, it is desirable to which precision is not more than 0.1%, and temperature drift coefficient is not more than 20PPm.Filter
Ripple electric capacity C2 value requirement is 100uf/6.3V.
The corresponding circuit of pressure sensor group module 3 is as shown in figure 3, including resistance R4, resistance R5 and instrument amplifier
AD620, resistance R5 the first pin are connected to ground, with instrument amplifier after the signal negative terminal of crus secunda and pressure sensor group is in parallel
AD620 crus secunda（Differential signal input negative terminal）Connection, resistance R4 the first pin and instrument amplifier AD620 the first pin connect
Connect, the octal connection of resistance R4 crus secunda and instrument amplifier AD620, (differential signal is defeated for instrument amplifier AD620 the 3rd pin
Enter anode) it is connected with the signal anode of pressure sensor group, instrument amplifier AD620 the 6th pin (amplified signal output end) connection
To fourth pin of the network marked as iecAD of central processing unit.Wherein R4 and R5 are 1K high-accuracy resistance, it is desirable to which precision is not
More than 0.1%, temperature drift coefficient is not more than 20PPm, and the amplifying circuit of resistance R4, resistance R5 and instrument amplifier AD620 compositions can be
The electric signal of pressure sensor 7 amplifies the sensed pressure of pressure sensor 7 in 50 times, that is, accompanying drawing 2.
As shown in figure 3, the corresponding circuit of power module 4 includes transformer T1, filter capacitor C1 and filter capacitor C4, wherein
The switch power module for the model SHB-2.5W-3.3 that T1 is produced from Hangzhou Shan Bo Electronics Co., Ltd.s, the module is wide electricity
Pressure input（AC85V-260V）, it is output as 3.3V high-accuracy power supply.T1 the first pin and crus secunda meets AC220V, T1 when using
The 3rd pin for ground（GND）, T1 the 4th pin is power supply VCC (3.3V), and power supply is provided for device of the present utility model.Filtered electrical
Hold C1 the first pin and filter capacitor C4 the first pin the 4th pin in parallel with T1（VCC）Electrical connection, the second of filter capacitor C1
Pin and filter capacitor C4 crus secunda the 3rd pin in parallel with T1（GND）Electrical connection, filter capacitor C1 value requirement is 1000uf/
6.3V, the value requirement that filter capacitor goes out is 0.1uf.
The measuring principle of the utility model load-type ice amount is that have different densities, that is, 1 kilogram 0 DEG C using water and ice
The ice volume change that water is frozen into 1 kilogram 0 DEG C is different, therefore produces different buoyancy：1 kilogram of 0 DEG C of water is frozen into 1 kilogram 0
DEG C ice volume change.
Variation in buoyancy：
N
The ice that 1 kilogram of 0 DEG C of water is frozen into 1 kilogram 0 DEG C can produce 0.88 Newton force, and the icing amount of an Ice storage coiled pipe is few
Then 5000 kilograms, at most 100000 kilograms, it is usually：40000 kilograms, that is to say, that conventional coil pipe build-ups ice from water to be produced
35200 Newton forces, are easy to measure from approximate 0 Newton force to 35200 Newton forces, however, to insure that measurement
The accuracy of value, notes the range of reasonable selection pressure sensor, and Type Selection Principle is the maximum range and disk of pressure sensor group
The maximum buoyancy that Guan Congshui becomes ice generation completely is approached.The signal of pressure sensor is amplified 50 by pressure sensor group module 3
Times, fourth pin device of the network marked as iecAD of central processing unit is connected to, central processing unit device 1 obtains voltage signal
IecAD, central processing unit 1（Single-chip microcomputer）1 times can be amplified with selection signal, voltage signal iecAD passes through 24 bit A/D converter quilts
The binary number of one 24 is converted into, it is convenient generally for processing, preceding 16 bit is taken, one can also be regarded as
0-ffffH 16 system numbers,（It is exactly 0-65535 to change into 10 system numbers）Pass through data processing and demarcation, it is possible to obtain one
The value of ice amount（Resolving power takes 0.1 kilogram）.Because buoyancy initial value of the coil pipe in water is not zero, therefore before measurement ice amount
Need to calibrate zero point.According to experiment, when fluid temperature is 3 degree, calibration zero point conveniently, now can be determined that no icing, pressure
The magnitude of voltage of sensor can regard the initial value of icing as, and the ice numerical quantity read by central processing unit 1 is considered as 0.0 kilogram,
Calibrate zero point.Need to measure the water temperature near water tank bottom to calibrate zero point, the measurement of water temperature can pass through TEMP
Device 6 and temperature sensor signal processing module 2 are carried out, and corresponding circuit can be seen that at temperature sensor signal from accompanying drawing 3
Resistance R6 in reason module 2 can regard the resistance of temperature sensor as, and temperature sensor here is PT1000 RTDs,
It is 1K in zero point, and when -20 spend, the resistance of temperature sensor is 921.992, the electricity of temperature sensor at 30 degree
It is 1116.342 to hinder resistance.Corresponding magnitude of voltage (PT1000), center processing can be calculated according to the PT1000 resistance table of comparisons
Temperature sensor PT100 0 and A0.0 a pair of differential signals of formation are exported corresponding 24 AD values by device 1 after amplifying 4 times,
The binary number of one 24 is namely converted into, it is convenient generally for processing, preceding 16 bit is taken, can also be seen
Into a 0-ffffH 16 system numbers,（It is exactly 0-65535 to change into 10 system numbers）Pass through data processing and demarcation, it is possible to
To a temperature value（Resolving power goes 0.01 degree）Etc. measurement temperature be 3 degree when carry out ice measurement zero point correction.Actually should
The temperature measured in is additionally operable to monitor the water temperature in Ice Storage Tank, according to the height of water temperature in addition to for ice amount zero point correction
The cold needed, adjusting device operational factor and control strategy are calculated, the purpose of optimal control is reached.The purpose of optimal control can
To reduce energy consumption, and equipment is set to be in " health " running status as far as possible, with the service life of extension device.
As preferred embodiment of the present utility model, the utility model also includes wireless RWNS communication modules 5, centre
Reason device 1 and wireless RWNS communication modules 5 are electrically connected using I/O modes.Wireless RWNS communication modules 5 are used for the pressure value of measurement
It is sent to host computer to realize wireless data teletransmission with temperature value.Wireless RWNS communication modules 5 can select the life of Lleida company
The LSDRF4310N03 wireless communication modules of production, it is with central processing unit 1 by there is 6 data lines to electrically connect.Such as 18 in Fig. 3
It is shown, wherein the pin of the corresponding central processing unit 1 for the GD02 labels being connected with central processing unit 1 is needed with outer interruption work(
Can, the wireless RWNS communication modules 5 are used to the buoyancy numerical value and Temperature numerical that measure being sent to host computer.PC control
Software obtains icing rate curve by analyzing icing signal, according to icing rate curve, adjusting device operational factor and control
Strategy, reaches the purpose of optimal control.The purpose of optimal control can reduce energy consumption, and equipment is in " health " as far as possible
Running status, with the service life of extension device.
Claims (9)
1. a kind of load-type ice measuring device, including：Central processing unit（1）, temperature sensor signal processing module（2）, temperature
Spend sensor（6）And power module（4）, temperature sensor signal processing module（2）Receive temperature sensor（6）The temperature of detection
Signal is spent, central processing unit is sent into after carrying out signal transacting（1）, it is characterised in that also handle mould including pressure sensor signal
Block（3）With pressure sensor group（7）, pressure sensor signal processing module（3）Receive pressure sensor group（7）Detect and ice
Related signal is measured, central processing unit is sent into after carrying out signal transacting（1）.
2. load-type ice measuring device according to claim 1, it is characterised in that：Pressure sensor group（7）Including two
Pressure sensor, pressure sensor top passes through fixed support（9）It is fixed on coil-pipe water tank wall, pressure sensor bottom is consolidated
It is scheduled on coiled tube supports frame（8）On, pressure sensor is connected to pressure sensor signal processing module by lead（3）.
3. load-type ice measuring device according to claim 2, it is characterised in that：Pressure sensor group（7）Detection plate
Pipe water tank（10）The buoyancy of reclaimed water, the buoyancy of its reclaimed water is related to ice amount, and ice amount is more, and buoyancy is bigger.
4. load-type ice measuring device according to claim 3, it is characterised in that：Temperature sensor（6）Installed in disk
Pipe support frame（8）On, temperature sensor signal processing module is passed the signal to by lead（2）, temperature sensor（6）Spy
Measuring point keeps certain distance with coil-pipe water tank bottom.
5. load-type ice measuring device according to claim 4, it is characterised in that：Pressure sensor signal processing module
（3）The amplifying circuit constituted including resistance R4, resistance R5 and instrument amplifier AD620, for by pressure sensor group（7）Telecommunications
Number amplification, wherein resistance R5 the first pin is connected to ground, with instrument after the signal negative terminal of crus secunda and pressure sensor group is in parallel
Amplifier AD620 crus secunda connection, the first pin connection of resistance R4 the first pin and instrument amplifier AD620, the second of resistance R4
Pin and instrument amplifier AD620 octal connection, instrument amplifier AD620 the 3rd pin connect with the signal anode of pressure sensor group
Connect, instrument amplifier AD620 octal connection, instrument amplifier AD620 the 6th pin is connected to central processing unit（1）Network mark
Number be iecAD the 4th pin.
6. the load-type ice measuring device according to claim any one of 1-5, it is characterised in that：Temperature sensor signal
Processing module（2）Including resistance R1, resistance R2, resistance R3, resistance R6 and filter capacitor C2, resistance R1 the first pin and resistance R2
The first pin and joining power, the tie point of resistance R1 crus secunda and resistance R3 the first pin is connected to central processing unit（1）'s
First pin of the network marked as A0.0, resistance R2 crus secunda is connected with the first pin of resistance R6 the first pin and filter capacitor C2
Point is connected to central processing unit（1）Crus secunda of the network marked as PT1000, resistance R3 crus secunda and resistance R6 crus secunda
And filter capacitor C2 crus secunda earth, wherein resistance R6 is variable resistor, corresponding to temperature sensor（6）.
7. the load-type ice measuring device according to claim any one of 1-5, it is characterised in that：Pressure sensor signal
Processing module（3）With temperature sensor signal processing module（2）It is sent to central processing unit（1）Two voltage signals composition one
To differential signal.
8. the load-type ice measuring device according to claim any one of 1-5, it is characterised in that：Also include wireless RENS
Communication module（5）, the Dynamic Signal of the icing amount for ice measuring device to be measured in real time is sent to host computer.
9. the load-type ice measuring device according to claim any one of 1-5, it is characterised in that：Load-type ice measurement
Device corrects the result of measurement by calibrating zero point automatically.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720028052.9U CN206488401U (en) | 2017-01-11 | 2017-01-11 | A kind of load-type ice measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720028052.9U CN206488401U (en) | 2017-01-11 | 2017-01-11 | A kind of load-type ice measuring device |
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| Publication Number | Publication Date |
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| CN206488401U true CN206488401U (en) | 2017-09-12 |
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ID=59765687
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| CN201720028052.9U Active CN206488401U (en) | 2017-01-11 | 2017-01-11 | A kind of load-type ice measuring device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106765780A (en) * | 2017-01-11 | 2017-05-31 | 杭州源牌环境设备有限公司 | A kind of load-type ice measuring device |
| CN117006563A (en) * | 2023-09-27 | 2023-11-07 | 湖南大学 | Cold accumulation amount detection system and method, air conditioning system and control method thereof |
-
2017
- 2017-01-11 CN CN201720028052.9U patent/CN206488401U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106765780A (en) * | 2017-01-11 | 2017-05-31 | 杭州源牌环境设备有限公司 | A kind of load-type ice measuring device |
| CN117006563A (en) * | 2023-09-27 | 2023-11-07 | 湖南大学 | Cold accumulation amount detection system and method, air conditioning system and control method thereof |
| CN117006563B (en) * | 2023-09-27 | 2024-01-23 | 湖南大学 | Cold accumulation amount detection system and method, air conditioning system and control method thereof |
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