CN205450645U - Safe signal pickup assembly of mining essence - Google Patents
Safe signal pickup assembly of mining essence Download PDFInfo
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- CN205450645U CN205450645U CN201521089766.8U CN201521089766U CN205450645U CN 205450645 U CN205450645 U CN 205450645U CN 201521089766 U CN201521089766 U CN 201521089766U CN 205450645 U CN205450645 U CN 205450645U
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Abstract
The utility model discloses a safe signal pickup assembly of mining essence aims at providing one kind and carries out data transmission through CAN communication, alleviates electric car control system operating load's safe signal pickup assembly of mining essence, solved the controller accomplish handle and the operation burden heavy, the data volume is big, easily causes the communication delay, its technical scheme main points are including electrical unit, little the control unit, little the control unit still is connected with the data signal collection circuit that is used for receiving data signal for receiving analog signal's analog signal acquisition circuit is used for receiving pulse signal's pulse signal acquisition circuit, for communication bidirectional data signal's CAN output circuit, electrical unit's power supply voltage is 5V, has reached improvement security level, alleviates operating load's effect, the utility model is suitable for a safe technical field of mining essence.
Description
Technical field
This utility model relates to the technical field of mining intrinsic safety, more specifically, it relates to the signal pickup assembly of a kind of mining intrinsic safety.
Background technology
In electric automobile, the DC source of what signal acquiring system was commonly used is 24V or 12V is powered, but the requirement according to essential safety, voltage and current in circuit must be reliably limited in the range of a permission by mining electric automobile, to ensure in normal work or to occur the electric spark and the heat effect that produce under the failure condition such as short circuit and component damage to be unlikely to cause the hazardous gas of surrounding to explode；Meanwhile, signals collecting and the process of common electric automobile are all completed by entire car controller, process and computational burden is heavy, and data volume is big, easily causes communication delay.For above technical problem, need existing signal pickup assembly is made further improvements.
Utility model content
The deficiency existed for prior art, the purpose of this utility model is: provide that one can independent separate be out from control system of electric automobile by signals collecting, carried out data transmission by CAN communication, alleviate the signal pickup assembly of the mining intrinsic safety of control system of electric automobile operating load.
For achieving the above object, this utility model provides following technical scheme: the signal pickup assembly of a kind of mining intrinsic safety, including power subsystem, micro-control unit, described micro-control unit is also associated with receiving the digital signal acquiring circuit of digital signal, in order to receive the analogue signal acquisition circuit of analogue signal, in order to the pulse signal acquisition circuit of return pulse signal, in order to the CAN output circuit of communication bi-directional transfer of data signal, the supply voltage of described power subsystem is 5V.
By above-mentioned setting, only by CAN, vehicle-state is sent to entire car controller, alleviate the burden of entire car controller, mining electric vehicle is made more to adapt to down-hole complex environment, whole signal pickup assembly uses outside 5V constant voltage dc source to power, the signal that each signals collecting part is arranged by micro-control unit (MCU) processes, entire car controller is sent information to by CAN signal transmitting portion, electric spark or heat effect that 5V power supply produces are not enough to the imflammable gas that ignites, it it is the device of a kind of essential safe type, be conducive to increasing the safety of mining electric automobile.
Can be further arranged to as concrete scheme of the present utility model: described power subsystem includes that power supply chip, described power supply chip are TLE42644G chip.
By above-mentioned setting, use power supply chip, such that it is able to provide overall integrated circuit, simplify circuit design, it is simple to manufacture, and the power supply exported is more stable.
Can be further arranged to as concrete scheme of the present utility model: described digital signal acquiring circuit includes the first integrated chip MC33975 and some capacity cells, all by capacity cell ground connection on the signals collecting foot of described first integrated chip MC33975, its communication pin is connected with micro-control unit communication.
By above-mentioned setting, digital signal is divided into the effective such as key signal of high input, and the effective such as gear signal of low input.Electric capacity for digital signal processing circuit part has strict capacity limit, within all capacitances are limited in 0.1 microfarad, improves sampling precision.
Can be further arranged to as concrete scheme of the present utility model: described analogue signal acquisition circuit includes some sampling units, described sampling unit is made up of the sampling resistor connected, also being parallel with decoupling capacitor on sampling resistor, the sampled signal outfan of described sampling unit connects the sampling pin of micro-control unit.
By above-mentioned setting, carry out dividing potential drop, current limliting by resistance, make the maximum voltage of input microcontroller within the reference voltage of 4.1V or close with reference voltage.
Can be further arranged to as concrete scheme of the present utility model: described pulse signal acquisition circuit includes pulsed signal end, connect the optic coupling element of pulsed signal end, the outfan of optic coupling element connects the input pin of micro-control unit.
By above-mentioned setting, use light-coupled isolation, the inductance in circuit and capacitance size are met to the requirement of intrinsic safety type.
Can be further arranged to as concrete scheme of the present utility model: described micro-control unit includes the minimum system that single-chip microcomputer XC2267M is formed.
By above-mentioned setting, integrated level is high, and circuit structure simplifies, and it is convenient to control.
Can be further arranged to as concrete scheme of the present utility model: described CAN output circuit includes numeral isolating chip ADuM1201BRZ, CAN driving chip PCA82C250T, communication interface circuit, described communication interface circuit connects lightning protection component and common mode choke.
By above-mentioned setting, communicate more stable, reliable, quick, it is to avoid the time delay of signal.
Compared with prior art, the beneficial effects of the utility model are: effectively reduce the operating load caused the signals collecting part in electric automobile to main controller excessive, and, while the security performance improved, more comprehensive to signals collecting, integrated level is high, circuit reduction.
Accompanying drawing explanation
Fig. 1 is the circuit block diagram of this utility model embodiment；
Fig. 2 is the circuit diagram of the power subsystem of this utility model embodiment；
Fig. 3 is the digital signal acquiring circuit schematic diagram of this utility model embodiment；
Fig. 4 is the analogue signal acquisition circuit schematic diagram of this utility model embodiment；
Fig. 5 is the pulse signal acquisition circuit schematic diagram of this utility model embodiment；
Fig. 6 is the micro control unit circuit schematic diagram of this utility model embodiment；
Fig. 7 is the CAN output circuit schematic diagram of this utility model embodiment.
In figure 1, power subsystem；2, micro-control unit；3, digital signal acquiring circuit；4, analogue signal acquisition circuit；5, pulse signal acquisition circuit；6, CAN output circuit；7, power supply chip；8, the first integrated chip；9, sampling resistor；10, decoupling capacitor；11, lightning protection component；12, common mode choke.
Detailed description of the invention
Referring to figs. 1 through Fig. 7, this utility model embodiment is described further.
As shown in Figure 1, a kind of signal pickup assembly of mining intrinsic safety, including power subsystem 1, micro-control unit 2, described micro-control unit 2 is also associated with receiving the digital signal acquiring circuit 3 of digital signal, in order to receive the analogue signal acquisition circuit 4 of analogue signal, in order to the pulse signal acquisition circuit 5 of return pulse signal, in order to the CAN output circuit 6 of communication bi-directional transfer of data signal, the supply voltage of described power subsystem 1 is 5V.Wherein digital signal acquiring circuit 3 includes switching value height input circuit and the low input circuit of switching value, and digital signal is divided into the effective such as key signal of high input, and the effective such as gear signal of low input.This signal pickup assembly has higher safe class, it is suitably applied in the work car that mineral nitrogen gathers, owing to it runs in mineral nitrogen environment, if electric pressure is too high, so will produce security incident, therefore powered by the 5V in voltage cell, so that circuit is more stable, safer.
By above-mentioned setting, only by CAN, vehicle-state is sent to entire car controller, alleviate the burden of entire car controller, mining electric vehicle is made more to adapt to down-hole complex environment, whole signal pickup assembly uses outside 5V constant voltage dc source to power, micro-control unit 2(MCU) to each signals collecting part arrange signal process, entire car controller is sent information to by CAN signal transmitting portion, electric spark or heat effect that 5V power supply produces are not enough to the imflammable gas that ignites, it it is the device of a kind of essential safe type, be conducive to increasing the safety of mining electric automobile.
As in figure 2 it is shown, described power subsystem 1 includes power supply chip 7, described power supply chip 7 is TLE42644G chip.Use power supply chip 7, such that it is able to provide overall integrated circuit, simplify circuit design, it is simple to manufacture, and the power supply exported is more stable.Wherein the electric capacity of power supply chip 7 input and resistance play the effect of filtering voltage regulation.
As it is shown on figure 3, described digital signal acquiring circuit 3 includes the first integrated chip 8MC33975 and some capacity cells, all by capacity cell ground connection on the signals collecting foot of described first integrated chip 8MC33975, its communication pin is connected with micro-control unit 2 communication.Multiplexed signal sampling can be carried out, simplify signal acquisition circuit.By above-mentioned setting, digital signal is divided into the effective such as key signal of high input, and the effective such as gear signal of low input.Electric capacity for digital signal processing circuit part has strict capacity limit, within all capacitances are limited in 0.1 microfarad, improves sampling precision.
As shown in Figure 4, described analogue signal acquisition circuit 4 includes some sampling units, described sampling unit is made up of the sampling resistor 9 connected, and sampling resistor 9 is also parallel with decoupling capacitor 10, and the sampled signal outfan of described sampling unit connects the sampling pin of micro-control unit 2.By above-mentioned setting, carry out dividing potential drop, current limliting by resistance, make the maximum voltage of input microcontroller within the reference voltage of 4.1V or close with reference voltage.
As it is shown in figure 5, described pulse signal acquisition circuit 5 includes pulsed signal end, connecting the optic coupling element of pulsed signal end, the outfan of optic coupling element connects the input pin of micro-control unit 2.By above-mentioned setting, use light-coupled isolation, the inductance in circuit and capacitance size are met to the requirement of intrinsic safety type.
As shown in Figure 6, micro-control unit 2 includes the minimum system that single-chip microcomputer XC2267M is formed.By above-mentioned setting, integrated level is high, and circuit structure simplifies, and it is convenient to control.
As it is shown in fig. 7, described CAN output circuit 6 includes numeral isolating chip ADuM1201BRZ, CAN driving chip PCA82C250T, communication interface circuit, described communication interface circuit connects lightning protection component 11 and common mode choke 12.Common mode choke 12 can suppress common-mode signal so that communicates more stable, reliable, quick, it is to avoid the time delay of signal.Lightning protection component 11 uses transient diode, if thunder and lightning occurs, can quickly lay down too high voltage, thus ensure reliability and the safety of communication.
Shown in sum up, therefore this device by the Power Limitation of signal acquiring system in the range of the 1.3W of intrinsic safety requirements, effectively reduce the operating load that main controller is caused by the signals collecting part in electric automobile excessive, and, while the security performance improved, more comprehensive to signals collecting, integrated level is high, circuit reduction.Only by CAN, vehicle-state is sent to entire car controller, alleviate the burden of entire car controller, making mining electric vehicle more adapt to down-hole complex environment, this device includes digital signal acquiring part, collection of simulant signal part, pulse signal acquisition part；Micro-control unit 2(MCU), CAN signal transmitting portion；Whole signal pickup assembly uses outside 5V constant voltage dc source to power, micro-control unit 2(MCU) signal that arranges each signals collecting part processes, and sends information to entire car controller by CAN signal transmitting portion.The signal acquiring system of the 24V/12V power supply that present invention electric automobile different from the past is commonly used, but use 5V DC source, the electric spark or the heat effect that produce are not enough to the imflammable gas that ignites, and are the devices of a kind of essential safe type, are conducive to increasing the safety of mining electric automobile.
The above is only preferred implementation of the present utility model, and protection domain of the present utility model is not limited merely to above-described embodiment, and all technical schemes belonged under this utility model thinking belong to protection domain of the present utility model.It should be pointed out that, for those skilled in the art, without departing from the some improvements and modifications under this utility model principle premise, these improvements and modifications also should be regarded as protection domain of the present utility model.
Claims (7)
1. the signal pickup assembly of a mining intrinsic safety, including power subsystem (1), micro-control unit (2), it is characterized in that: described micro-control unit (2) is also associated with receiving the digital signal acquiring circuit (3) of digital signal, in order to receive the analogue signal acquisition circuit (4) of analogue signal, pulse signal acquisition circuit (5) in order to return pulse signal, in order to the CAN output circuit (6) of communication bi-directional transfer of data signal, the supply voltage of described power subsystem (1) is 5V.
The signal pickup assembly of mining intrinsic safety the most according to claim 1, it is characterised in that: described power subsystem (1) includes that power supply chip (7), described power supply chip (7) they are TLE42644G chip.
The signal pickup assembly of mining intrinsic safety the most according to claim 1, it is characterized in that: described digital signal acquiring circuit (3) includes the first integrated chip (8) MC33975 and some capacity cells, all by capacity cell ground connection on the signals collecting foot of described first integrated chip (8) MC33975, its communication pin is connected with micro-control unit (2) communication.
The signal pickup assembly of mining intrinsic safety the most according to claim 1, it is characterized in that: described analogue signal acquisition circuit (4) includes some sampling units, described sampling unit is made up of the sampling resistor (9) connected, also being parallel with decoupling capacitor (10) on sampling resistor (9), the sampled signal outfan of described sampling unit connects the sampling pin of micro-control unit (2).
The signal pickup assembly of mining intrinsic safety the most according to claim 1, it is characterized in that: described pulse signal acquisition circuit (5) includes pulsed signal end, connecting the optic coupling element of pulsed signal end, the outfan of optic coupling element connects the input pin of micro-control unit (2).
The signal pickup assembly of mining intrinsic safety the most according to claim 1, it is characterised in that: described micro-control unit (2) includes the minimum system that single-chip microcomputer XC2267M is formed.
The signal pickup assembly of mining intrinsic safety the most according to claim 1, it is characterized in that: described CAN output circuit (6) includes numeral isolating chip ADuM1201BRZ, CAN driving chip PCA82C250T, communication interface circuit, described communication interface circuit connects lightning protection component (11) and common mode choke (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521089766.8U CN205450645U (en) | 2015-12-23 | 2015-12-23 | Safe signal pickup assembly of mining essence |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521089766.8U CN205450645U (en) | 2015-12-23 | 2015-12-23 | Safe signal pickup assembly of mining essence |
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| CN205450645U true CN205450645U (en) | 2016-08-10 |
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| CN201521089766.8U Active CN205450645U (en) | 2015-12-23 | 2015-12-23 | Safe signal pickup assembly of mining essence |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106451783A (en) * | 2016-11-04 | 2017-02-22 | 浙江中科正方电子技术有限公司 | Remotely controllable power distribution control circuit |
| CN117394846A (en) * | 2023-12-13 | 2024-01-12 | 常州市索鼎自动化科技有限公司 | Isolation device for intrinsically safe devices |
-
2015
- 2015-12-23 CN CN201521089766.8U patent/CN205450645U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106451783A (en) * | 2016-11-04 | 2017-02-22 | 浙江中科正方电子技术有限公司 | Remotely controllable power distribution control circuit |
| CN117394846A (en) * | 2023-12-13 | 2024-01-12 | 常州市索鼎自动化科技有限公司 | Isolation device for intrinsically safe devices |
| CN117394846B (en) * | 2023-12-13 | 2024-02-27 | 常州市索鼎自动化科技有限公司 | Isolation device for intrinsically safe devices |
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