CN203069665U - Voltage measuring module - Google Patents
Voltage measuring module Download PDFInfo
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- CN203069665U CN203069665U CN 201320089383 CN201320089383U CN203069665U CN 203069665 U CN203069665 U CN 203069665U CN 201320089383 CN201320089383 CN 201320089383 CN 201320089383 U CN201320089383 U CN 201320089383U CN 203069665 U CN203069665 U CN 203069665U
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- voltage
- isolating
- signal transmission
- measuring module
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Abstract
The utility model discloses a voltage measuring module including a voltage collecting circuit. An output terminal of the voltage collecting circuit is connected with a single-chip microprocessor converting input signals to PWM (Pulse-Width Modulation) wave signals electrically. An output terminal of the single-chip microprocessor is connected with an input terminal of a digital-to-analogue converting circuit electrically through an isolating circuit. A main function of the isolating circuit is realizing digital isolation of the PWM wave signals output by the single-chip microprocessor and then transmitting the signals to the digital-to-analogue converting circuit. Therefore, signal transmission is realized, and an effect of isolating mutual interference of two ends of high voltage is also realized, so that the reliability and accuracy of signal transmission are guaranteed effectively. The isolating circuit is a photoelectric isolating circuit. Compared to other isolating methods, the method adopting the photoelectric isolating circuit is small in signal transmission distortion and good in isolating effect. The voltage measuring module adopting the structure is reasonable in structure, and can transmit analog signals between a high voltage power end and a low voltage power end and can isolate power interference. And the voltage measuring module contributes to improving the reliability of analog detection signal transmission.
Description
Technical field
The utility model relates to a kind of voltage measurement module.
Background technology
Along with rapid economy development, the raising of thought of people consciousness, people are also more and more higher to the requirement of living environment Environmental Protection Level, and electrocar produces under this background.Electrocar also claims electric automobile, refers to the vehicle power to be power, travels with power wheel, meets the vehicle of road traffic, the every requirement of security legislation.The advantage of electric automobile is: itself is the harmful gas of exhaust emission atmosphere not, even be scaled the discharging of generating plant by institute's power consumption, outside sulphur removal and the particulate, other pollutant also significantly reduces.Because power plant is built in mostly away from densely populated city, the mankind are injured less, and power plant is fixed, the discharging of concentrating, remove various noxious emissions and also be more prone to, so electrocar is the automobile of at present environmental protection.
Though electrocar has above advantage, the deficiency of electrocar maximum is that the battery charge capacity is less, cause electrocar continuation of the journey mileage too short, and starting torque is little, relatively requires great effort when climbing.Now, after energy height, the lithium battery that volume is little occur, just efficiently solve the continuation of the journey problem.
In order to increase the starting torque of electrocar, people generally can solve by the mode that promotes the cell voltage amplitude.With regard to present electrocar, the voltage of power-supply battery generally all about 72V, belong to higher voltage value or high-pressure side, and the operating voltage of electrocar console all is 5V or 12V, belongs to lower magnitude of voltage or low pressure end.In order to detect the ruuning situation of power supply in real time, generally in higher electrocar, all be provided with voltage detecting circuit and current detection circuit to power-supply battery.But because the greatest differences of power-supply battery and console operating voltage, both the situation of not matching can occur when transmitting simulating signal, cause signal phase mutual interference between the high-low voltage power source end, and serious meeting signal occurs and can not transmit.
Summary of the invention
The technical problems to be solved in the utility model is to provide a kind of rational in infrastructure at above-mentioned deficiency, can transmit simulating signal between the high-low voltage power source end, the voltage measurement module that again can insulating power supply disturbs.
For solving the problems of the technologies described above, this voltage measurement module comprises voltage collection circuit, its design feature is: the output terminal of voltage collection circuit is electrically connected with the single-chip microcomputer that input signal is changed into the PWM ripple, and the output terminal of single-chip microcomputer is electrically connected with the input end of D/A converting circuit by buffer circuit.
This voltage measurement module is to isolate the simulation transferring structure by numeral to realize and can transmit simulating signal between the high-low voltage power source end, again can insulating power supply disturbs.
Numeral is isolated the simulation transferring structure and is mainly comprised single-chip microcomputer, the D/A converting circuit that is arranged between voltage collection circuit output terminal and the low pressure end, and is arranged on the buffer circuit between single-chip microcomputer and the D/A converting circuit.The main effect of single-chip microcomputer is that the simulating signal that voltage collection circuit sends is changed into corresponding with it PWM ripple signal, has so just realized the conversion of simulating signal to digital signal.And the main effect of D/A converting circuit, be that the PWM ripple signal that single-chip microcomputer sends is changed into corresponding simulating signal with it, like this, guaranteeing to transform under the prerequisite of precision, the consistance of simulating signal before and after can guaranteeing to transform has just realized that also the simulating signal that detects at power-supply battery place high-pressure side is to the transmission of console place low pressure end.The main effect of buffer circuit between single-chip microcomputer output terminal and the D/A converting circuit input end, be that the PWM ripple signal that single-chip microcomputer is exported is carried out being delivered to D/A converting circuit after numeral is isolated, so not only can realize the transmission of signal, also play the problem of isolated high-voltage two ends phase mutual interference, effectively guaranteed reliability and accuracy that signal transmits.
As a kind of implementation, described buffer circuit is photoelectric isolating circuit.
Photoelectric isolating circuit is a kind of buffer circuit of maturation, and for other isolation methods, it is little that signal transmits distortion, and isolation effect is also better.
In sum, adopt the voltage measurement module of this structure, rational in infrastructure, can between the high-low voltage power source end, transmit simulating signal, can disturb by insulating power supply again, help to improve the reliability that analog detection signal transmits.
Description of drawings
By reference to the accompanying drawings the utility model is described in further detail:
Fig. 1 is structural representation of the present utility model.
Among the figure: 1 is voltage collection circuit, and 2 is single-chip microcomputer, and 3 is buffer circuit, and 4 is D/A converting circuit, and 5 is the high-pressure side power supply, and 6 is the low pressure end power supply, and 7 is console.
Embodiment
As shown in the figure, this voltage measurement module comprises the voltage collection circuit 1 that is arranged on high-pressure side, and voltage collection circuit 1 is by 5 power supplies of high-pressure side power supply.The output terminal of voltage collection circuit 1 is electrically connected with single-chip microcomputer 2, and the main effect of single-chip microcomputer 2 is that the simulating signal that voltage collection circuit 1 sends is changed into corresponding with it PWM ripple signal, has so just realized the conversion of simulating signal to digital signal.The output terminal of single-chip microcomputer 2 is electrically connected with D/A converting circuit 4, and D/A converting circuit 4 is by 6 power supplies of low pressure end power supply.The main effect of D/A converting circuit 4 is that the PWM ripple signal that single-chip microcomputer 2 sends is changed into corresponding simulating signal with it, and sends the console 7 of being powered by low pressure end power supply 6 equally to.Like this, guarantee to transform under the prerequisite of precision, the consistance of simulating signal before and after can guaranteeing to transform has just realized that also the simulating signal that detects at power-supply battery place high-pressure side is to the reliable delivery of console 7 place low pressure ends.
Be provided with buffer circuit 3 between single-chip microcomputer 2 output terminals and D/A converting circuit 4 input ends, the main effect of buffer circuit 3 is that the PWM ripple signal that single-chip microcomputer 2 is exported is carried out being delivered to D/A converting circuit 4 after numeral is isolated.So not only can realize the transmission of signal, also play the problem of isolated high-voltage two ends phase mutual interference, effectively guarantee reliability and accuracy that signal transmits.
In the present embodiment, described buffer circuit 3 is photoelectric isolating circuit 3.Photoelectric isolating circuit 3 is buffer circuits 3 of a kind of maturation, and for other isolation methods, it is little that signal transmits distortion, and isolation effect is also better.
Claims (2)
1. voltage measurement module, comprise voltage collection circuit (1), it is characterized in that: the output terminal of voltage collection circuit (1) is electrically connected with the single-chip microcomputer (2) that input signal is changed into the PWM ripple, and the output terminal of single-chip microcomputer (2) is electrically connected with the input end of D/A converting circuit (4) by buffer circuit (3).
2. voltage measurement module as claimed in claim 1, it is characterized in that: described buffer circuit is photoelectric isolating circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320089383 CN203069665U (en) | 2013-02-27 | 2013-02-27 | Voltage measuring module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320089383 CN203069665U (en) | 2013-02-27 | 2013-02-27 | Voltage measuring module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203069665U true CN203069665U (en) | 2013-07-17 |
Family
ID=48768437
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320089383 Expired - Fee Related CN203069665U (en) | 2013-02-27 | 2013-02-27 | Voltage measuring module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203069665U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113866492A (en) * | 2021-09-17 | 2021-12-31 | 厦门市爱维达电子有限公司 | Linear isolation sampling method for direct-current voltage signal |
-
2013
- 2013-02-27 CN CN 201320089383 patent/CN203069665U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113866492A (en) * | 2021-09-17 | 2021-12-31 | 厦门市爱维达电子有限公司 | Linear isolation sampling method for direct-current voltage signal |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130717 Termination date: 20140227 |