CN208172090U - A kind of current measuring device for lifter dynamo of autocar glass heating estimation - Google Patents
A kind of current measuring device for lifter dynamo of autocar glass heating estimation Download PDFInfo
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- CN208172090U CN208172090U CN201820607714.2U CN201820607714U CN208172090U CN 208172090 U CN208172090 U CN 208172090U CN 201820607714 U CN201820607714 U CN 201820607714U CN 208172090 U CN208172090 U CN 208172090U
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Abstract
The utility model discloses a kind of current measuring devices for lifter dynamo of autocar glass heating estimation,Including control unit MCU,Relay and motor M,The port I/O of control unit MCU and the coil control terminal LS0 of relay LS1 be connected,The triggering end of relay is connect with motor M,Feature is that the device further includes sampling resistor,Signal conditioning circuit,Signal adapter and current data acquisition module,Sampling resistor is arranged between relay and ground terminal,The input terminal of route and signal conditioning circuit between relay and sampling resistor connects,The output end of signal conditioning circuit and the input terminal of signal adapter connect,The output end of signal adapter is connect with the input terminal of current data acquisition module,The output end of current data acquisition module is connect with control unit MCU,Advantage is can precise acquisition current signal,To further estimate lifter dynamo of autocar glass heating value.
Description
Technical field
The utility model relates to a kind of current measuring devices, are used for lifter dynamo of autocar glass liter more particularly, to one kind
The current measuring device of temperature estimation.
Background technique
The motor of automobile glass lifter belongs to short time duty, is far below institute to reduce motor used in cost all
Power is needed, such overpower operation can make motor temperature rise larger.Motor temperature rise must be monitored when use in real time, in order to avoid motor temperature
Rise excessively high damage.Existing way be made of the operating time of motor estimation motor temperature rise, such as：1, a temperature rise meter is set
Number device dT；2, when motor works, motor is started to warm up, and each cycle allows dT to increase a several A；3 when motor stops, electricity
Machine starts to radiate, and each cycle allows dT to subtract a several B；4, A, B are that coefficient can be measured according to system, and dT is the temperature rise of estimation
Value.Motor can be forcibly closed after dT to preset protection value to be protected.But the problem is that：Estimation precision is poor, must
Sufficiently large surplus need be stayed, the waste of motor resource is caused.Because the temperature rise of motor has direct relation with the electric current of work, because
This, needs a kind of lifter dynamo of autocar glass current measuring device to obtain the current signal of motor, to further estimate
Lifter dynamo of autocar glass heating value.
Summary of the invention
Vehicle glass is used for the technical problem to be solved by the utility model is to provide a kind of precise acquisition current signal
The current measuring device of elevator motor heating estimation.
The utility model solves technical solution used by above-mentioned technical problem：One kind is for automobile glass lifter electricity
The current measuring device of machine heating estimation, including control unit MCU, relay and motor M, the I/O of the control unit MCU
Port and the coil control terminal LS0 of the relay LS1 be connected, the triggering end of the relay and the motor M
Connection, which further includes sampling resistor, signal conditioning circuit, signal adapter and current data acquisition module, and described adopts
Sample resistance is arranged between the relay and ground terminal, route and institute between the relay and the sampling resistor
The input terminal for the signal conditioning circuit stated connects, and the output end of the signal conditioning circuit is defeated with the signal adapter
Enter end connection, the output end of the signal adapter is connect with the input terminal of the current data acquisition module, described
The output end of current data acquisition module is connect with the control unit MCU.
The current data acquisition module is the AD conversion module inside the control unit MCU.
Compared with prior art, the utility model has the advantage of：The utility model makes public for the first time a kind of for automobile
The current measuring device of glass lifter motor heating estimation, the coil control terminal LS0 of the relay used LS1 and control
The I/O port of unit MUC processed is connected, and low level is arranged in LS0 or LS1 by control unit MCU, it is dynamic to can control relay contact
Make, controls motor positive and inverse, initiative to increase sampling resistor between relay and ground terminal, the electric current of motor is by adopting
Sample resistance is converted to voltage signal, then via amplifier（U10A）Signal I_moto is transmitted to control by the signal conditioning circuit of composition
The AD signal adapter port of unit MCU processed carries out sampling and obtains motor working current value, is able to achieve precise acquisition current signal,
To further estimate lifter dynamo of autocar glass heating value.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model current measuring device.
Specific embodiment
The utility model is described in further detail below in conjunction with figure embodiment.
Specific embodiment
A kind of current measuring device for lifter dynamo of autocar glass heating estimation, as shown in Figure 1, including that control is single
The coil control terminal LS0 of first MCU 1, relay 2 and motor M 3, the port I/O of control unit MCU1 and relay 2 LS1
It is connected, the triggering end of relay 2 is connect with motor M3, which further includes sampling resistor 4, signal conditioning circuit 5, signal conversion
Device 6 and current data acquisition module 7, sampling resistor 4 are arranged between relay 2 and ground terminal, relay 2 and sampling resistor 4 it
Between route connect with the input terminal of signal conditioning circuit 5, the input of the output end of signal conditioning circuit 5 and signal adapter 6
End connection, the output end of signal adapter 6 are connect with the input terminal of current data acquisition module 7, current data acquisition module 7
Output end is connect with control unit MCU 1.
In this particular embodiment, current data acquisition module 7 is the AD conversion module inside control unit MCU 1.
Above-described embodiment is the further explanation to the utility model, but the protection scope of the utility model is with claim
Subject to book.
Claims (2)
1. a kind of current measuring device for lifter dynamo of autocar glass heating estimation, including control unit MCU, relay
With motor M, the port I/O of the control unit MCU and the coil control terminal LS0 of the relay LS1 be connected, institute
The triggering end for the relay stated is connect with the motor M, it is characterised in that：The device further includes sampling resistor, signal condition
Circuit, signal adapter and current data acquisition module, the sampling resistor are arranged between the relay and ground terminal,
Route between the relay and the sampling resistor is connect with the input terminal of the signal conditioning circuit, described
The output end of signal conditioning circuit is connect with the input terminal of the signal adapter, the output end of the signal adapter with
The input terminal of the current data acquisition module connects, the output end of the current data acquisition module and the control
Unit MCU connection.
2. a kind of current measuring device for lifter dynamo of autocar glass heating estimation according to claim 1,
It is characterized in that：The current data acquisition module is the AD conversion module inside the control unit MCU.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820607714.2U CN208172090U (en) | 2018-04-26 | 2018-04-26 | A kind of current measuring device for lifter dynamo of autocar glass heating estimation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820607714.2U CN208172090U (en) | 2018-04-26 | 2018-04-26 | A kind of current measuring device for lifter dynamo of autocar glass heating estimation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208172090U true CN208172090U (en) | 2018-11-30 |
Family
ID=64368582
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820607714.2U Active CN208172090U (en) | 2018-04-26 | 2018-04-26 | A kind of current measuring device for lifter dynamo of autocar glass heating estimation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208172090U (en) |
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2018
- 2018-04-26 CN CN201820607714.2U patent/CN208172090U/en active Active
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