CN201290027Y - Electric load management terminal and wireless remote control alarm device - Google Patents

Abstract

The utility model relates to a wireless remote control alarm device for an electrical load management terminal, which comprises a wireless remote transmitting unit and a wireless remote receiving unit, wherein, the wireless remote transmitting unit is arranged in the electrical load management terminal, and alarm signals are sent in the wireless manner; and the wireless remote receiving unit is separated from the electrical load management terminal, and the number thereof can be at least one, and the alarm signals are received in the wireless manner by the wireless remote receiving unit and sent by the wireless remote receiving unit through an alarm. The warning mode of the prior alarm relay is improved by the utility model, so that the alarm device has the advantages of flexible and convenient installation and wider communication range.

Description

Electricity load management terminal and wireless remote-controlled alarm device

Technical field

The utility model relates to a kind of electricity load management terminal, relates in particular to the wireless remote-controlled alarm device that is used for electricity load management terminal, and adopts the electricity load management terminal of wireless remote-controlled alarm mode.

Background technology

Electricity load management terminal (hereinafter to be referred as terminal) is one of most important equipment in the power load management system, since the last century the eighties, power load management system is widely used in the power industry of China, scale is increasing, and this Terminal Type is made very large contribution for aspects such as solving imbalance between supply and demand, adjustment load curve, assurance power grid security, realization economy operation of power grid.

The composition schematic diagram of existing power load management system 100 as shown in Figure 1.The working method of each terminal 10 is mounted in the switchgear house of each electricity consumption enterprise or biotope, communicator by for example GPRS public network 20 receives every control command and the parameter that Master Control Center 30 (generally being located in the power supply administration) issues, control and manage according to these control commands and parameter then, and various running statuses and form are reported Master Control Center 30 by communicator.

With reference to shown in Figure 2, electricity load management terminal 10 is a kind of smart machines, form by a plurality of modules, generally be divided into: main control module 11, display module 12, data acquisition module 13, communication module 14, alarm module 15, control module 16, power module 17 etc.

Main control module 11 is core and brains of terminal, the general chip microprocessor that adopts is used as central processing unit, its main function is that the order from Master Control Center that communication module receives is handled, data that the data acquisition module is collected and state calculate and differentiate, according to order and the operation result processing of reporting to the police and controlling, and with relevant data with running status shows by display module or called together by communication module by control centre and to survey.

Display module 12 is responsible for showing various data and running status.

Data acquisition module 13 is responsible for gathering various analog quantitys, pulsed quantity and quantity of state, is used for data such as rated output, electric weight, voltage, electric current, and produces state information.

Power module 17 is responsible for the DC power supply that each module provides use.

Control module 16 is responsible for carrying out the operation of tripping operation and combined floodgate.

Alarm module 15 is responsible for sending alarm, reminds the user in time to handle various situations.

The alert if of terminal and warning purpose are as shown in table 1:

The alert if of table 1 terminal and warning purpose

	Alert if	The warning purpose
			1	Receive the parameter modification order that Master Control Center issues	Notify the user in time to check the content of parameter modification
2	User's load has surpassed the power index of setting	Notify the user in time of fire alarming, in time load to be lowered
			3	User's power consumption surpassed set purchase 90% of electric weight index	Notify the user in time to submit or increase the electricity charge
4	The control of tripping or close a floodgate	Notify the user to handle

Dual mode is adopted in the warning of terminal at present simultaneously: first kind of mode is the audio alert mode, with reference to shown in Figure 3, the groundwork principle of this mode is to adopt special-purpose speech chip 102, in advance with the voice recording of various warnings on the speech chip 102 of terminal, when needs are reported to the police, just will be stored in after voice in the chip amplify by audio amplifier circuit on the terminal 103, release through loudspeaker 104.Can store many group voice in the general dedicated voice chip, for example " excess load please be rationed the power supply ", " parameter is changed, please notes to check ", " remote control tripping operation ", " allowing combined floodgate " or the like, CPU 101 can select different speech play as required.

The second way is the alarm relay way of output, with reference to shown in Figure 4, the groundwork principle of this mode is at terminal inner an alarm relay 113 to be set specially, at ordinary times, alarm relay 113 disconnects, when needs are reported to the police, send alarm signal by CPU 111, drive circuit 112 drives alarm relaies 113 adhesives, can connect the electric bell 114 of exterior of terminal by alarm relay, allows electric bell send warning.

It is in order to take into account directly perceived and propagation distance, adopt the audio alert mode to sound very directly perceived, but spread scope to be limited, only limits in the power distribution room of installing terminal that existing warning device adopts two kinds of working methods.The alarm relay working method can be moved electric bell to other rooms, thereby improved the propagation distance of reporting to the police, but this type of alarm exists following deficiency: at first, because alarm relay is to realize by wired mode, always exist certain distance between electric bell and the terminal, so must draw long line, bring certain difficulty to installation; Secondly, because comparatively difficulty is installed, thus a plurality of electric bells unlikely are installed in many places, and also the position relative fixed of electric bell, move comparatively difficulty, brought certain inconvenience to the user.

The utility model content

Technical problem to be solved in the utility model provides a kind of electricity load management terminal, and it can use the radio alarming mode to send alarm signal to the alarm of a plurality of dispersions.

The utility model also provides a kind of wireless remote-controlled alarm device, sends alarm signal by the transmitter unit that is arranged at electricity load management terminal to the receiving element of a plurality of dispersions.

The utility model proposes a kind of wireless remote-controlled alarm device that is used for electricity load management terminal, comprising: be located at the wireless remote control transmitter unit on the described electricity load management terminal, send alarm signal with wireless mode; At least one wireless remote control receiving element that separates with described electricity load management terminal receives described alarm signal and sends warning by an alarm with wireless mode.

In above-mentioned wireless remote-controlled alarm device, above-mentioned wireless remote control transmitter unit comprises coding chip, a plurality of address selection switch, high frequency transmission circuit and transmitting antenna.Coding chip has a plurality of address pins, and coding chip receives a warning message, and the state that is set up according to address pins is that alarm signal increases address information.A plurality of address selection switch connect a plurality of address pins of coding chip, correspondingly in order to the state of each address pins to be set.High frequency transmission circuit connects coding chip, and alarm signal is modulated on the carrier signal.Transmitting antenna connects described high frequency transmission circuit, is used to send the alarm signal that is modulated on the carrier signal.

In above-mentioned wireless remote-controlled alarm device, above-mentioned wireless remote control receiving element comprises decoding chip, a plurality of address selection switch, high frequency receiving circuit, reception antenna and alarm.Reception antenna receives the alarm signal that is modulated on the carrier signal.High frequency receiving circuit carries out demodulation to obtain alarm signal.Decoding chip connects high frequency receiving circuit, and when the determined address information of a plurality of address pins of the address information in the alarm signal and this decoding chip is mated, exports an activation signal.A plurality of address selection switch connect a plurality of address pins of decoding chip correspondingly, in order to the state of each address pins to be set.Alarm connects decoding chip, to send warning according to enable signal.

In above-mentioned wireless remote-controlled alarm device, alarm comprises drive circuit and loudspeaker, and wherein drive circuit connects decoding chip, and loudspeaker connect drive circuit.

On the other hand, the present invention proposes a kind of electricity load management terminal, comprises a wireless remote control transmitter unit, and this wireless remote control transmitter unit sends alarm signal with wireless mode.

In above-mentioned electricity load management terminal, above-mentioned wireless remote control transmitter unit comprises coding chip, a plurality of address selection switch, high frequency transmission circuit and transmitting antenna.Coding chip has a plurality of address pins, and coding chip receives a warning message, and the state that is set up according to address pins is that alarm signal increases address information.A plurality of address selection switch connect a plurality of address pins of coding chip, correspondingly in order to the state of each address pins to be set.High frequency transmission circuit connects coding chip, and alarm signal is modulated on the carrier signal.Transmitting antenna connects described high frequency transmission circuit, is used to send the alarm signal that is modulated on the carrier signal.

The utility model makes it compared with prior art owing to adopt above technical scheme, has following remarkable advantage:

1, uses flexibly, easy for installation: owing to adopted the wireless remote control radiating circuit to replace original alarm relay, make wired mode change wireless mode into, not needing to carry out backguy installs, receiver can freely be placed on any old place in the radiating circuit transmitting boundary, moves easily.

2, spread scope is wider: radiating circuit can corresponding a plurality of receivers, have been become a bit mode of multiple spot by original point-to-point mode, can enlarge spread scope.

3, with low cost, applicability is strong: the device price used owing to the wireless remote control radiating circuit is all very low, and power consumption is little, so go in the terminal equipment of a lot of models.

Description of drawings

For above-mentioned purpose of the present utility model, feature and advantage can be become apparent, below in conjunction with accompanying drawing embodiment of the present utility model is elaborated, wherein:

Fig. 1 is the composition schematic diagram of existing power load management system.

Fig. 2 is the composition structured flowchart of the electricity load management terminal among Fig. 1.

Fig. 3 is existing audio alert mode operation principle block diagram.

Fig. 4 is existing alarm relay operation principle block diagram.

Fig. 5 is the structured flowchart of the electricity load management terminal of an embodiment of the utility model, wherein comprises the transmitter unit of wireless remote-controlled alarm device.

Fig. 6 is the structured flowchart of the electricity load management terminal of another embodiment of the utility model, wherein comprises the transmitter unit and the audio alert unit of wireless remote-controlled alarm device.

Fig. 7 is embodiment schematic diagram of coding chip of Fig. 5 or transmitter unit shown in Figure 6.

Fig. 8 is the receiving element schematic diagram of wireless remote-controlled alarm device of the present utility model.

Fig. 9 is embodiment schematic diagram of decoding chip of receiving element shown in Figure 8.

Figure 10 adopts each data pins waveform schematic diagram when latching the output type decoding chip.

Figure 11 is each data pins waveform schematic diagram when adopting unlatching output type decoding chip.

Figure 12 is each data pins waveform schematic diagram of decoding chip of a preferred embodiment.

Embodiment

The utility model is in order to solve the some shortcomings of existing apparatus, working method to remote alarm relay output is improved, characteristics of the present utility model are: adopt the wireless remote control radiating circuit to replace original alarm relay, change original wired mode into wireless mode.Followingly narrate embodiment of the present utility model with reference to each accompanying drawing.

Fig. 5 illustrates the structure of the electricity load management terminal 200 of an embodiment of the utility model, wherein comprises the transmitter unit 220 of wireless remote-controlled alarm device, for simplicity's sake, other structures of electricity load management terminal 200 is shown no longer.Wireless remote control transmitter unit 220 is coupled to CPU 210, to receive the alarm signal of being sent where necessary by CPU 210.

Wireless remote control transmitter unit 220 further comprises coding chip 221, address selection switch 222, high frequency transmission circuit 223 and transmitting antenna 224.The main effect of coding chip 221 is to add address information in the alarm signal that sends, when receiving, understand address information like this, have only when mate the address by decoding chip, decoding chip just responds, thereby stops the phase mutual interference between the incoherent equipment.

In an example, adopt universal coding chip PT2262, it is a kind of chip of low-power consumption low price of CMOS technology manufacturing, 12 (A0-A11) three-state address end pins (can be set to unsettled, connect high level, connect states such as low level) can be arranged at most, and its combination in any can provide 531441 address codes.Because transmitter unit 220 can be provided with multiple address code by coding chip, so that distinguish different receiving elements, therefore transmitter unit can corresponding a plurality of receiving elements, enlarge spread scope.

Universal coding chip PT2262 application drawing as shown in Figure 7, pin is described as follows shown in the table 2:

The explanation of table 2 PT2262 pin:

Title	Pin	Explanation
			A0-A11	1-8、10-13	Address pins is used to carry out geocoding
D0-D5	7-8、10-13	Data input pin has one to be that " 1 " promptly has coding to send
			Vcc	18	Power positive end (+)
Vss	9	Power supply negative terminal (-)
			TE	14	Coding starts, and is used for multidata coding emission, and low level is effective
OSC1
		16	The oscillation resistance input is with OSC2 institute connecting resistance decision frequency of oscillation
OSC2
		15	The oscillation resistance oscillator output end
Dout
		17	Coding output (just often being low level)

When CPU 210 sent alarm signal, coding chip 221 was formed a complete code word with address code, numeric data code, synchronous code, and will export to high frequency transmission circuit 223 through the serial data signal of modulation (the about 38KHz of modulating frequency) by the coding output pin.

Address switch is connected on the address pins of coding chip, and the setting of three kinds of states is provided: unsettled, connect high level, connect low level, 12 (A0-A11) can be arranged at most, and combination in any can provide 531441 address codes.Adopt 8 bit address pins in actual applications, combination in any can provide 6561 address codes.

When the coding output Dout of coding chip 221 was high level, high frequency transmission circuit 223 starting of oscillations were also launched the constant amplitude high-frequency signal of 315MHz, and this high-frequency carrier signal is modulated by alarm signal; When the coding output Dout of coding chip 221 was low level, high frequency transmission circuit 223 failures of oscillations so high frequency transmission circuit 223 is controlled by the digital signal that the coding output of coding chip 221 sends fully, thereby were finished amplitude keying (ASK modulation).

Transmitting antenna 224 can adopt the long reduction antenna of 15mm, is mainly used in the 315MHz high-frequency signal is sent by form of electromagnetic wave.

In addition, in the embodiment shown in fig. 6, also can comprise traditional audio alert mode.Wherein electricity load management terminal 200a also comprises dedicated voice chip 225, audio amplifier circuit 226 and loudspeaker 227.

Wireless remote control receiving element 320 separates with electricity load management terminal, is arranged at outside the electricity load management terminal dispersedly, and receives alarm signal by wireless mode.

Fig. 8 is the receiving element schematic diagram of wireless remote-controlled alarm device of the present utility model.With reference to shown in Figure 8, wireless remote control receiving element 320 mainly comprises decoding chip 321, address selection switch 322, high frequency receiving circuit 323, reception antenna 324 and alarm 325.The main effect of decoding chip 321 is address informations of differentiating in the signal that receives, when the address information of address information and transmitter unit 220 is complementary, just responds.

In example, adopt general decoding chip PT2272, it and coding chip PT2262 form a pair of coding and decoding combination, it also is a kind of chip of low-power consumption low price of CMOS technology manufacturing, 12 (A0-A11) three-state address end pins (can be configured to unsettled, connect high level, connect three kinds of states of low level) can be arranged at most, combination in any can provide 531441 address codes, its application drawing as shown in Figure 9, pin explanation is as shown in table 3:

The explanation of table 3 PT2272 pin:

Title	Pin	Explanation
			A0-A11	1-8,10-13	Address pins is used to carry out geocoding
D0-D5	7-8,10-13	Data input pin, only consistent with 2262 in address code, data pins could be exported the high level corresponding with 2262 data terminals, otherwise is output as low level.
			Vcc	18	Power positive end (+)
Vss	9	Power supply negative terminal (-)
			Din	14	The data-signal input
OSC1	16	The oscillation resistance input is with OSC2 institute connecting resistance decision frequency of oscillation
			OSC2
	15	The oscillation resistance oscillator output end
			VT
	17	Decoding is effectively confirmed, output (often low), and decoding effectively becomes high level (transient state)

Reception antenna 324 can adopt the long reduction antenna of 15mm, is mainly used in the 315MHz high frequency electromagnetic wave signal of reception from transmitter unit 220.

When high frequency receiving circuit 323 receives the constant amplitude high-frequency signal of 315MHz, to high level of the data input pin Din of decoding chip 321 output, when high frequency receiving circuit 323 does not receive the constant amplitude high-frequency signal of 315MHz, to low level of data input pin output of decoding chip 321.Finish the ASK modulation corresponding to high frequency transmission circuit 221, high frequency receiving circuit 321 is mainly finished the ASK demodulation, to obtain alarm signal.

Decoding chip 321 has a plurality of address pins, the address information that these address pins are arranged to be scheduled to by a group address switch.Receive the alarm signal (for serial data) of high frequency receiving circuit 323 outputs as the data-signal input Din of decoding chip 321 after, address information in the serial data is compared with the address information of self address switch definition, if matching addresses, the data pins output and the corresponding high level of coding chip 2262 data terminals of decoding chip 321.In addition, decoding is effectively confirmed pin VT output high level as enable signal, thereby the alarm 325 that drives is thereafter reported to the police.

The PT2272 decoding chip is divided into two kinds, and a kind of data need only and successfully receive the level state that just can always keep corresponding, change when next remote-control data changes in order to latch output, and this chip suffix is represented with " L "; Whether another kind of be unlatching output, the level that the data pin is exported is instantaneous, and launch correspondingly with transmitting terminal, and this chip suffix is represented with " M ".Receiving element 320 adopts different decoding chips, the circuit of transmitter unit 220 will be different, for first kind of situation, the data pins of transmitter unit coding chip will be used two, a pin (such as the D0 pin) is to produce a high level pulse at the rising edge place of alarm signal, another pin (such as the D1 pin) is the high level pulse of falling edge generation in alarm signal, and its waveform as shown in figure 10.

For second kind of situation, the data pins of transmitter unit coding chip is only used a pin (such as pin D0), but when high level appearred in alarm signal, its level was necessary for high level, and situation as shown in figure 11.

Above-mentioned two kinds of situations cut both ways: for first kind of situation, owing to adopted the pulse radiation pattern, can reduce power consumption, reduce electromagnetic interference, if but the burst length weak point may influence the reliability of reporting to the police and starting and stopping, cause or do not report to the police, situation about cannot stop after reporting to the police so will improve reliability, will improve the time of pulse.For second kind of situation, owing to be level control radiation pattern, in whole time of fire alarming section, all be in emission state, so power consumption is bigger, but its reliability is higher.The characteristics of comprehensive these two kinds of methods, unlatching output type decoding chip (PT2272M) is adopted in a preferred embodiment of the present utility model on receiving element, the alarm signal that the CPU 210 of the terminal 200 at transmitter unit 220 places sends is to have certain hour square-wave signal at interval, have certain hour the tinkle of bells warning at interval thereby formed, its each pin waveform as shown in figure 12.

Address switch 322 is connected on the address pins of decoding chip 321, and the setting of three kinds of states is provided: unsettled, connect high level, connect low level, 12 (A0-A11) can be arranged at most, and combination in any can provide 531441 address codes.Adopt 8 bit address pins in actual applications, combination in any can provide 6561 address codes.

When decoding chip 321 separate read correct alarm signal after, can offer corresponding signal of drive circuit 325a of alarm 325, drive circuit 325a is responsible for after receiving this signal, drives the electric bell of back or the loudspeaker 325b warning of sounding.

Though the utility model discloses as above with preferred embodiment; right its is not in order to limit the utility model; any those skilled in the art; in not breaking away from spirit and scope of the present utility model; when doing a little modification and perfect, therefore protection range of the present utility model is worked as with being as the criterion that claims were defined.

Claims (6)

1. A wireless remote control alarm device for electric load management terminals, characterized in that it comprises: The wireless remote control transmitting unit provided on the electric load management terminal sends an alarm signal wirelessly; At least one wireless remote control receiving unit separated from the power load management terminal receives the alarm signal in a wireless manner and sends out an alarm through an alarm device. 2. The wireless remote control alarm device according to claim 1, wherein the wireless remote control transmitting unit comprises: An encoding chip has a plurality of address pins, the encoding chip receives an alarm message, and adds address information to the alarm signal according to the state of the address pin being set; A plurality of address selection switches are connected to the plurality of address pins of the encoding chip in one-to-one correspondence to set the state of each address pin; A high-frequency transmitting circuit, connected to the encoding chip, the high-frequency transmitting circuit modulates the alarm signal onto a carrier signal; and The transmitting antenna is connected to the high-frequency transmitting circuit, and transmits the alarm signal modulated on the carrier signal. 3. The wireless remote control alarm device according to claim 2, wherein the wireless remote control receiving unit comprises: a receiving antenna for receiving the alarm signal modulated onto the carrier signal; A high-frequency receiving circuit is used to demodulate to obtain the alarm signal; The decoding chip is connected to the high-frequency receiving circuit, and when the address information in the alarm signal matches the address information determined by the multiple address pins of the decoding chip, an enable signal is output; A plurality of address selection switches are connected to a plurality of address pins of the decoding chip in one-to-one correspondence to set the state of each address pin; and an alarm is connected to the decoding chip and sends an alarm according to the enabling signal . 4 . The wireless remote alarm device according to claim 3 , wherein the alarm device comprises a driving circuit and a speaker, the driving circuit is connected to the decoding chip, and the speaker is connected to the driving circuit. 5. A power load management terminal, characterized by comprising a wireless remote control transmitting unit, and the wireless remote control transmitting unit transmits an alarm signal in a wireless manner. 6. The power load management terminal according to claim 5, wherein the wireless remote control transmitting unit comprises: An encoding chip has a plurality of address pins, the encoding chip receives an alarm signal, and adds address information to the alarm signal according to the state of the address pin being set; A plurality of address selection switches are connected to the plurality of address pins of the encoding chip in one-to-one correspondence to set the state of each address pin; A high-frequency transmitting circuit, connected to the encoding chip, the high-frequency transmitting circuit modulates the alarm signal onto a carrier signal; and The transmitting antenna is connected to the high-frequency transmitting circuit and transmits the alarm signal modulated on the carrier signal.

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