CN208672175U - A kind of platinum resistance high-precision multiple point temperature measurement device - Google Patents
A kind of platinum resistance high-precision multiple point temperature measurement device Download PDFInfo
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- CN208672175U CN208672175U CN201821320088.5U CN201821320088U CN208672175U CN 208672175 U CN208672175 U CN 208672175U CN 201821320088 U CN201821320088 U CN 201821320088U CN 208672175 U CN208672175 U CN 208672175U
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Abstract
The utility model discloses a kind of platinum resistance high-precision multiple point temperature measurement devices, including collector and several distributors, the collector is built-in with Chip Microcomputer A and several first communicating circuits, the distributor is built-in with single-chip microcontroller B and several sensor Acquisition Circuits, and the single-chip microcontroller B is connect by the first communicating circuit with Chip Microcomputer A signal.A kind of platinum resistance high-precision multiple point temperature measurement device described in the utility model, mutually indepedent between each monitoring branch, unaffected, precision is high, and the road Qie Weimei branch is configured with malfunction indicator lamp, easy access.
Description
Technical field
The utility model relates to a kind of temperature measuring equipment more particularly to a kind of platinum resistance high-precision multiple point temperature measurement devices.
Background technique
In the industrial production, it is often necessary to temperature monitoring is carried out simultaneously to the multiple points of a device or to multiple devices,
Existing thermometry temperature measurement accuracy is not high, and exists when branch temperature sensor damage causes multi way temperature sensor by shadow
Loud problem, simultaneously because multi-point temperature measurement, makes service work very complicated when the sensor degradation of certain branch, it is entire to fill
The adaptability set is not high.
Summary of the invention
Goal of the invention: in order to overcome the deficiencies in the prior art, the utility model provides a kind of platinum resistance high-precision
Multiple point temperature measurement device makes to be independent of each other between each temperature monitoring branch, while being also convenient for overhauling.
Technical solution: to achieve the above object, a kind of platinum resistance high-precision multiple point temperature measurement device of the utility model, including
Collector and several distributors；The distributor includes single-chip microcontroller B, multiplex communication expanded circuit, several malfunction indicator lamp electricity
Road and several sensor Acquisition Circuits；Several sensor Acquisition Circuits are connect with multiplex communication expanded circuit signal, described
Multiplex communication expanded circuit is connect with single-chip microcontroller B signal, the signal output end of the single-chip microcontroller B and several malfunction indicator lamp
The signal input part signal of circuit connects, and the indicating fault circuit for lamp and sensor Acquisition Circuit correspond；The acquisition
Device includes Chip Microcomputer A and several first communicating circuits, and several distributors and several first communicating circuits one are a pair of
It answers, the single-chip microcontroller B is connect by the first communicating circuit with Chip Microcomputer A signal.
Further, the sensor Acquisition Circuit includes reference power supply, temperature sensor, the first AD sample circuit,
One AD amplification treatment circuit, the 2nd AD sample circuit, the 2nd AD amplification treatment circuit, single-chip microcontroller C, biasing circuit, compensation circuit,
Second communicating circuit and power supply；The reference power supply and the first AD sample circuit are electrically connected, the first AD sample circuit
Signal output end is connect with the signal input part signal of the first AD amplification treatment circuit, the signal output end of the temperature sensor
It is connect with the signal input part signal of the 2nd AD sample circuit, the signal output end and the 2nd AD of the 2nd AD sample circuit
The signal input part signal of amplification treatment circuit connects, the first AD amplification treatment circuit and the 2nd AD amplification treatment circuit
Signal output end connect with the signal input part signal of single-chip microcontroller C, the signal output end and biasing circuit of the single-chip microcontroller C
The connection of signal input part signal, the signal input part signal of the signal output end of the biasing circuit and compensation circuit connects,
The signal output end of the compensation circuit is connect with the signal input part signal of the 2nd AD sample circuit, the single-chip microcontroller C and
Two communication circuit signal connections, the power supply and single-chip microcontroller C are electrically connected.
Further, the temperature sensor is PT100 temperature sensor.
It further, further include shell and pcb board；The collector, single-chip microcontroller B, multiplex communication expanded circuit and several
Indicating fault circuit for lamp is integrated in the pcb board, and the pcb board is set in shell.
Further, the shell includes upper housing and lower case, and the lower housing cavity is provided with connecting column, the company
Connecing column is stairstepping, is divided into the upper half and lower half, and the diameter of the upper half is less than the diameter of lower half, and the upper half connects
Several spring leafs are connect, the top of the spring leaf is connect with upper half top, the spring leaf gradually outwardly convex from top to bottom,
The pcb board is provided with connecting hole, and the connecting hole passes through the upper half, is fixed between spring leaf and lower half, the upper casing
Body is connect with connecting column.
The beneficial effects of the utility model are as described below: a kind of platinum resistance high-precision multiple point temperature measurement device, are each branch
Sensor Acquisition Circuit be configured with individual single-chip microcontroller, the collected temperature of temperature sensor is recorded, then by logical
News circuit reaches the single-chip microcontroller B in distributor, not only can guarantee to make between the sensor Acquisition Circuit of each branch not
Receiving influences, it is thus also avoided that influence of the long distance transmission line resistance to measurement；The utility model is also per the acquisition electricity of sensor all the way
Road config failure indicator light circuit, when the sensor Acquisition Circuit when certain road not can be carried out normal work, event corresponding to the road
Barrier indicator light can play suggesting effect, to guarantee that service personnel can quickly have found the branch of failure appearance.
Detailed description of the invention
Attached drawing 1 is the principles of the present invention schematic diagram；
Attached drawing 2 is the schematic illustration of sensor Acquisition Circuit described in the utility model；
Attached drawing 3 is the structural schematic diagram of shell described in the utility model and pcb board；
Attached drawing 4 is the structural schematic diagram of connecting column described in the utility model.
Specific embodiment
The utility model is further described with reference to the accompanying drawing.
A kind of platinum resistance high-precision multiple point temperature measurement device as described in attached drawing 1 to 2, including collector 1 and several distribution
Device 2；The collector 1 includes Chip Microcomputer A 101 and several first communicating circuits 102, and the distributor 2 includes single-chip microcontroller
B201, multiplex communication expanded circuit 202, several indicating fault circuit for lamp 203 and several sensor Acquisition Circuits 204；Several institutes
It states sensor Acquisition Circuit 204 to connect with 202 signal of multiplex communication expanded circuit, the multiplex communication expanded circuit 202 and list
The connection of piece machine B201 signal, the signal of the signal output end of the single-chip microcontroller B201 and several indicating fault circuit for lamp 203
Input end signal connection, the indicating fault circuit for lamp 203 are corresponded with sensor Acquisition Circuit 204；Several distribution
Device 2 and several first communicating circuits 102 correspond, and the single-chip microcontroller B201 passes through the first communicating circuit 102 and monolithic
The connection of machine A101 signal.Multiple sensor Acquisition Circuits 204 built in the distributor 2 realize that multichannel extends function, and adopt
Storage 1 can also connect multiple distributors 2 simultaneously, carry out multichannel extension again, sensor Acquisition Circuit 204 can be made at multiplication
Add, thus increase can simultaneously monitoring point quantity.
In order to guarantee that data are accurate between each branch and do not influence each other, for per sensor Acquisition Circuit 204 all the way
Configured with single-chip microcontroller C211, in addition to this further include reference power supply 205, temperature sensor 206, the first AD sample circuit 207,
First AD amplification treatment circuit 208, the 2nd AD amplification treatment circuit 210, biasing circuit 212, is mended the 2nd AD sample circuit 209
Repay circuit 213, the second communicating circuit 214 and power supply 215；The reference power supply 205 electrically connects with the first AD sample circuit 207
It connects, the signal output end of the first AD sample circuit 207 and the signal input part signal of the first AD amplification treatment circuit 208 connect
It connects, the signal output end of the temperature sensor 206 is connect with the signal input part signal of the 2nd AD sample circuit 209, described
The signal output end of 2nd AD sample circuit 209 is connect with the signal input part signal of the 2nd AD amplification treatment circuit 210, institute
State letter of the signal output end of the first AD amplification treatment circuit 208 and the 2nd AD amplification treatment circuit 210 with single-chip microcontroller C211
The connection of number input end signal, the signal output end of the single-chip microcontroller C211 are connect with the signal input part signal of biasing circuit 212,
The signal output end of the biasing circuit 212 is connect with the signal input part signal of compensation circuit 213, the compensation circuit 213
Signal output end connect with the signal input part signal of the 2nd AD sample circuit 209, the single-chip microcontroller C211 and second communication
The connection of 214 signal of circuit, the power supply 215 and single-chip microcontroller C211 are electrically connected.PT100 temperature sensor is quick on the draw, error
Small, so saying that each temperature sensor 206 is all made of PT100 temperature sensor, each temperature sensor 206 will be measured
Obtained temperature reaches in corresponding single-chip microcontroller C by the conversion of AD signal, and the parameter of record is reached monolithic again by single-chip microcontroller C211
In machine B, single-chip microcontroller C can store the nominal data of calculating, and making the output data of the second communicating circuit is accurate temperature value.
If saving single-chip microcontroller B, and the collected numerical value of temperature sensor 206 is directly transferred to single-chip microcontroller C can be because of the biography of long range
Defeated line has an impact to collection value, increases error.
It further include shell 3 and pcb board 4；The collector 1, single-chip microcontroller B201, multiplex communication expanded circuit 202 and several
Indicating fault circuit for lamp 203 is integrated in the pcb board 4, and the pcb board 4 is set in shell 3.The reference power supply 205,
First AD sample circuit 207, the first AD amplification treatment circuit 208, the 2nd AD sample circuit 209, the 2nd AD amplification treatment circuit
210, biasing circuit 212, compensation circuit 213, the second communicating circuit 214 and power supply 215 are integrated in another piece of pcb board, and with temperature
Spend 206 composition measuring apparatus of sensor.
The shell 3 includes upper housing 301 and lower case 302, and 302 inner cavity of lower case is provided with connecting column 303, institute
Stating connecting column 303 is stairstepping, is divided into the upper half 304 and lower half 305, and the diameter of the upper half 304 is less than lower half 305
Diameter, the upper half 304 connects several spring leafs 306, and the top of the spring leaf 306 is connect with 304 top of the upper half,
Gradually outwardly convex, the pcb board 4 are provided with connecting hole 401 to the spring leaf 306 from top to bottom, when fixing pcb board 4, by institute
Connecting hole 401 is stated across the upper half 304, the bottom surface of spring leaf 306 is mortgaged in the upper surface of pcb board, makes cascaded surface mortgage in PCB
It below plate, is formed and is fixed, the connecting column 303 is provided with threaded hole, and the upper housing 301 is provided with pressure hole, and bolt passes through
Pressure hole is connect with the threaded hole of connecting column 303, to keep upper housing 301 and lower case 302 fixed.
The above is only the preferred embodiment of the utility model, it should be pointed out that: for the common skill of the art
For art personnel, without departing from the principle of this utility model, several improvements and modifications can also be made, these improve and
Retouching also should be regarded as the protection scope of the utility model.
Claims (5)
1. a kind of platinum resistance high-precision multiple point temperature measurement device, it is characterised in that: including collector (1) and several distributors (2)；
The distributor (2) include single-chip microcontroller B (201), multiplex communication expanded circuit (202), several indicating fault circuit for lamp (203) and
Several sensor Acquisition Circuits (204)；Several sensor Acquisition Circuits (204) and multiplex communication expanded circuit (202) are believed
Number connection, the multiplex communication expanded circuit (202) connect with single-chip microcontroller B (201) signal, the signal of the single-chip microcontroller B (201)
Output end is connect with the signal input part signal of several indicating fault circuit for lamp (203), the indicating fault circuit for lamp
(203) it is corresponded with sensor Acquisition Circuit (204)；The collector (1) include Chip Microcomputer A (101) and several first
Communicating circuit (102), several distributors (2) and several first communicating circuits (102) correspond, the single-chip microcontroller
B (201) is connect by the first communicating circuit (102) with Chip Microcomputer A (101) signal.
2. a kind of platinum resistance high-precision multiple point temperature measurement device according to claim 1, it is characterised in that: the sensor is adopted
Collector (204) include reference power supply (205), temperature sensor (206), the first AD sample circuit (207), at the first AD amplification
Manage circuit (208), the 2nd AD sample circuit (209), the 2nd AD amplification treatment circuit (210), single-chip microcontroller C (211), biasing circuit
(212), compensation circuit (213), the second communicating circuit (214) and power supply (215)；The reference power supply (205) is adopted with the first AD
Sample circuit (207) is electrically connected, the signal output end and the first AD amplification treatment circuit of the first AD sample circuit (207)
(208) signal input part signal connection, the signal output end and the 2nd AD sample circuit of the temperature sensor (206)
(209) signal input part signal connection, the signal output end and the 2nd AD enhanced processing of the 2nd AD sample circuit (209)
The signal input part signal of circuit (210) connects, the first AD amplification treatment circuit (208) and the 2nd AD amplification treatment circuit
(210) signal output end is connect with the signal input part signal of single-chip microcontroller C (211), the signal of the single-chip microcontroller C (211)
Output end is connect with the signal input part signal of biasing circuit (212), the signal output end of the biasing circuit (212) and compensation
The signal input part signal of circuit (213) connects, the signal output end and the 2nd AD sample circuit of the compensation circuit (213)
(209) signal input part signal connection, the single-chip microcontroller C (211) connect with the second communicating circuit (214) signal, the electricity
Source (215) and single-chip microcontroller C (211) are electrically connected.
3. a kind of platinum resistance high-precision multiple point temperature measurement device according to claim 2, it is characterised in that: the temperature sensing
Device (206) is PT100 temperature sensor.
4. a kind of platinum resistance high-precision multiple point temperature measurement device according to claim 1, it is characterised in that: further include shell
(3) and pcb board (4)；The collector (1), single-chip microcontroller B (201), multiplex communication expanded circuit (202) and several indicating fault
Circuit for lamp (203) is integrated in the pcb board (4), and the pcb board (4) is set in shell (3).
5. a kind of platinum resistance high-precision multiple point temperature measurement device according to claim 4, it is characterised in that: the shell (3)
Including upper housing (301) and lower case (302), lower case (302) inner cavity is provided with connecting column (303), the connecting column
(303) it is stairstepping, is divided into the upper half (304) and lower half (305), the diameter of the upper half (304) is less than lower half
(305) diameter, the upper half (304) connect several spring leafs (306), the top and the upper half of the spring leaf (306)
(304) top connects, and gradually outwardly convex, the pcb board (4) are provided with connecting hole to the spring leaf (306) from top to bottom
(401), the connecting hole (401) passes through the upper half (304), is fixed between spring leaf (306) and lower half (305), described
Upper housing (301) is connect with connecting column (303).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821320088.5U CN208672175U (en) | 2018-08-16 | 2018-08-16 | A kind of platinum resistance high-precision multiple point temperature measurement device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821320088.5U CN208672175U (en) | 2018-08-16 | 2018-08-16 | A kind of platinum resistance high-precision multiple point temperature measurement device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208672175U true CN208672175U (en) | 2019-03-29 |
Family
ID=65836435
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821320088.5U Active CN208672175U (en) | 2018-08-16 | 2018-08-16 | A kind of platinum resistance high-precision multiple point temperature measurement device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208672175U (en) |
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2018
- 2018-08-16 CN CN201821320088.5U patent/CN208672175U/en active Active
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