CN204177504U - Double cell calorimeter in parallel - Google Patents
Double cell calorimeter in parallel Download PDFInfo
- Publication number
- CN204177504U CN204177504U CN201420714823.6U CN201420714823U CN204177504U CN 204177504 U CN204177504 U CN 204177504U CN 201420714823 U CN201420714823 U CN 201420714823U CN 204177504 U CN204177504 U CN 204177504U
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- China
- Prior art keywords
- power supply
- table body
- positive pole
- calorimeter
- feed circuit
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- Expired - Fee Related
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Abstract
The utility model relates to measuring and controlling equipment technical field, specifically a kind of rational in infrastructure, assemble easy, cost is low, functional reliability is strong, can the double cell calorimeter in parallel of significant prolongation calorimeter measuring period, it is characterized in that table body is provided with the first power supply and the second power supply and buffer circuit, wherein the first power supply is connected with the negative pole of the second power supply, and be connected with the GND pin of feed circuit in table body respectively, first power supply is connected with the positive pole of feed circuit in table body through buffer circuit respectively with the positive pole of the second power supply, there is cost low, be easy to promote, remarkable reduction maintenance cost, improve the advantages such as job stability.
Description
Technical field
The utility model relates to measuring and controlling equipment technical field, specifically a kind of rational in infrastructure, assemble easy, cost is low, functional reliability is strong, can the double cell calorimeter in parallel of significant prolongation calorimeter measuring period.
Background technology
As everyone knows, calorimeter is with feature many employings powered battery of its super low-power consumption, and the average stand-by time of battery is 8-10.But in standby so long, may because the reason such as the internal resistance of battery itself is comparatively large or battery electric quantity is low, battery electric quantity is exhausted in advance, causes calorimeter metering inaccurate or quit work in advance.In order to solve this problem, maintainer needs battery in timely his-and-hers watches body to change, but directly access in the course of the work in heating system pipeline due to calorimeter, residing for it, environment is more complicated, under the condition that high temperature, electromagnetic environment are severe, the cost that maintenance personal regularly carries out safeguarding is high, labour intensity is large.
The reserce cell switched system of present stage generally first carries out examination and controlling by voltage, current detection circuit to current electric power thus supplied, and be switched to stand-by power supply circuit under control of the microprocessor when monitor value is abnormal, realize above action need and build some data processing modules, adopt the chips such as similar single-chip microcomputer, but this kind of product development cost is high, in operational process, there is the situation of program fleet, and job stability is not enough when high temperature, high pressure, electromagnetic interference (EMI) are severe.
Summary of the invention
The utility model for the deficiencies in the prior art, propose a kind of rational in infrastructure, assemble easy, cost is low, functional reliability is strong, can the double cell calorimeter in parallel of significant prolongation calorimeter measuring period.
The utility model is reached by following measures:
A kind of double cell calorimeter in parallel, be provided with table body, the measurement components being provided with feed circuit and being connected with feed circuit in table body, it is characterized in that table body is provided with the first power supply and the second power supply and buffer circuit, wherein the first power supply is connected with the negative pole of the second power supply, and be connected with the GND pin of feed circuit in table body respectively, the first power supply is connected with the positive pole of feed circuit in table body through buffer circuit respectively with the positive pole of the second power supply.
Buffer circuit described in the utility model comprises the first isolation module be serially connected in the first power supply positive pole and table body between feed circuit positive pole, and the second isolation module be connected in the second power supply positive pole and table body between feed circuit positive pole, the first isolation module and the second isolation module are for realizing the isolated location of being powered to feed circuit one direction by the first power supply.
The first isolation module in buffer circuit described in the utility model and the second isolation module can adopt diode, wherein the positive pole of diode is connected with the positive pole of the first power supply/the second power supply, and the negative pole of diode is connected with VBAT pin in calorimeter.
The utility model diode adopts SS14, and electric current is when below 50uA, and forward voltage drop is less than 0.3V.
The utility model operationally, under the first power supply and the second power supply are all in trouble-free situation, two power supplys are simultaneously for the measurement components in table body is powered, occur that electricity is low when some in the first power supply and the second power supply, when another is normal, wherein the voltage on a road is higher than the voltage on another road, then stop power supply in voltage Di mono-tunnel, and due to serial connection buffer circuit, effectively prevent the situation that the high power supply of the voltage reversal of power low to voltage is charged.
The utility model compared with prior art, circuit structure is simple, low in energy consumption, can effectively avoid existing power supply monitoring circuit to be subject to electromagnetic interference (EMI), the shortcomings such as functional reliability is low, have cost low, be easy to promote, significantly reduce maintenance cost, improve the advantage such as job stability.
accompanying drawing illustrates:
Accompanying drawing 1 is structural representation of the present utility model.
Accompanying drawing 2 is a kind of embodiment circuit diagrams of the present utility model.
Reference numeral: feed circuit 1, measurement components 2, first power supply 3, second power supply 4, buffer circuit 5.
embodiment:
Below in conjunction with accompanying drawing, the utility model is further described.
As shown in Figure 1, the utility model proposes a kind of double cell calorimeter in parallel, be provided with table body, the measurement components 2 being provided with feed circuit 1 and being connected with feed circuit 1 in table body, it is characterized in that table body is provided with the first power supply 3 and the second power supply 4 and buffer circuit 5, wherein the first power supply 3 is connected with the negative pole of the second power supply 4, and be connected with the GND pin of feed circuit 1 in table body respectively, the first power supply 3 is connected with the positive pole of feed circuit 1 in table body through buffer circuit 5 respectively with the positive pole of the second power supply 4.
Buffer circuit 5 described in the utility model comprises the first isolation module be serially connected in the first power supply positive pole and table body between feed circuit positive pole, and the second isolation module be connected in the second power supply positive pole and table body between feed circuit positive pole, the first isolation module and the second isolation module are for realizing the isolated location of being powered to feed circuit one direction by the first power supply.
As shown in Figure 2, the first isolation module in buffer circuit 5 described in the utility model and the second isolation module can adopt diode, wherein the positive pole of diode is connected with the positive pole of the first power supply/the second power supply, the negative pole of diode is connected with VBAT pin in calorimeter, the utility model diode adopts SS14, electric current is when below 50uA, and forward voltage drop is less than 0.3V.
The utility model operationally, under the first power supply 3 and the second power supply 4 are all in trouble-free situation, two power supplys are simultaneously for the measurement components 2 in table body is powered, occur that electricity is low when some in the first power supply 3 and the second power supply 4, when another is normal, wherein the voltage on a road is higher than the voltage on another road, then stop power supply in voltage Di mono-tunnel, and due to serial connection buffer circuit 5, effectively prevent the situation that the high power supply of the voltage reversal of power low to voltage is charged.
The utility model compared with prior art, circuit structure is simple, low in energy consumption, can effectively avoid existing power supply monitoring circuit to be subject to electromagnetic interference (EMI), the shortcomings such as functional reliability is low, have cost low, be easy to promote, significantly reduce maintenance cost, improve the advantage such as job stability.
Claims (4)
1. a double cell calorimeter in parallel, be provided with table body, the measurement components being provided with feed circuit and being connected with feed circuit in table body, it is characterized in that table body is provided with the first power supply and the second power supply and buffer circuit, wherein the first power supply is connected with the negative pole of the second power supply, and be connected with the GND pin of feed circuit in table body respectively, the first power supply is connected with the positive pole of feed circuit in table body through buffer circuit respectively with the positive pole of the second power supply.
2. one according to claim 1 double cell calorimeter in parallel, it is characterized in that described buffer circuit comprises the first isolation module be serially connected in the first power supply positive pole and table body between feed circuit positive pole, and the second isolation module be connected in the second power supply positive pole and table body between feed circuit positive pole, the first isolation module and the second isolation module are for realizing the isolated location of being powered to feed circuit one direction by the first power supply.
3. one according to claim 2 double cell calorimeter in parallel, it is characterized in that the first isolation module in described buffer circuit and the second isolation module employing diode, wherein the positive pole of diode is connected with the positive pole of the first power supply/the second power supply, and the negative pole of diode is connected with VBAT pin in calorimeter.
4. one according to claim 1 double cell calorimeter in parallel, it is characterized in that diode adopts SS14, electric current is when below 50uA, and forward voltage drop is less than 0.3V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420714823.6U CN204177504U (en) | 2014-11-25 | 2014-11-25 | Double cell calorimeter in parallel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420714823.6U CN204177504U (en) | 2014-11-25 | 2014-11-25 | Double cell calorimeter in parallel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204177504U true CN204177504U (en) | 2015-02-25 |
Family
ID=52566310
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420714823.6U Expired - Fee Related CN204177504U (en) | 2014-11-25 | 2014-11-25 | Double cell calorimeter in parallel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204177504U (en) |
-
2014
- 2014-11-25 CN CN201420714823.6U patent/CN204177504U/en not_active Expired - Fee Related
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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: 20150225 Termination date: 20161125 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |