frodovdr/node-red-nodes
1
0
Fork 0
mirror of https://github.com/node-red/node-red-nodes.git synced 2023-10-10 13:36:58 +02:00
Code Issues Releases Wiki Activity

Add % mode to rbe node deadband mode

Browse Source
This commit is contained in:
dceejay 2015-07-04 12:59:18 +01:00
parent 6aa5500d34
commit c09c58d729
4 changed files with 23 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
function/rbe/README.md
View File

@ -32,4 +32,14 @@ same value. Saves bandwidth, etc...
In deadband mode the incoming payload should contain a parseable *number* and is
output only if greater than + or - the *band gap* away from the previous output.
Will accept numbers, or parseable strings like "18.4 C" or "$500"
The deadband value can be specified as a fixed number, or a percentage. E.g. 10
or 5% . If % mode is used then the output will only get sent if the input payload
value is equal or more than the specified % away from the previously sent value.
For example - if last sent value was 100, and deadband is set to 10% - a value
of 110 will pass - then the next value has to be 121 in order to pass (= 110 + 10% = 121).
This is mainly useful if you want to operate across multiple topics at the same
time that may have widely differing input ranges.
Will only accept numbers, or parseable strings like "18.4 C" or "$500"

2
function/rbe/package.json
View File

@ -1,6 +1,6 @@
{
"name" : "node-red-node-rbe",
"version" : "0.0.5",
"version" : "0.0.6",
"description" : "A Node-RED node that provides report-by-exception (RBE) and deadband capability.",
"dependencies" : {
},

5
function/rbe/rbe.html
View File

@ -24,7 +24,7 @@
</div>
<div class="form-row" id="node-bandgap">
<label for="node-input-gap"><i class="fa fa-random"></i> Band gap</label>
<input type="text" id="node-input-gap" placeholder="e.g. 10" style="width:71%;">
<input type="text" id="node-input-gap" placeholder="e.g. 10 or 5%" style="width:71%;">
</div>
<div class="form-row">
<label for="node-input-name"><i class="fa fa-tag"/> Name</label>
@ -38,6 +38,7 @@
different to the previous one. Works on numbers and strings.</p>
<p>In <b>deadband</b> mode the incoming payload should contain a parseable <i>number</i> and is
output only if greater than + or - the <i>band gap</i> away from the previous output.</p>
<p>Deadband also supports % - only sends if the input differs by more than x% of the original value.</p>
<p><b>Note:</b> This works on a per <b>msg.topic</b> basis. This means that a single rbe node can
handle multiple topics at the same time.</p>
</script>
@ -49,7 +50,7 @@ handle multiple topics at the same time.</p>
defaults: {
name: {value:""},
func: {value:"rbe"},
gap: {value:"",validate:RED.validators.regex(/^(\d*|)$/)}
gap: {value:"",validate:RED.validators.regex(/^(\d*|)(%|)$/)}
},
inputs:1,
outputs:1,

8
function/rbe/rbe.js
View File

@ -21,6 +21,13 @@ module.exports = function(RED) {
RED.nodes.createNode(this,n);
this.func = n.func || "rbe";
this.gap = n.gap || 0;
this.pc = false;
if (this.gap.substr(-1) === "%") {
this.pc = true;
this.gap = parseFloat(this.gap);
}
console.log(this.gap, this.pc);
this.g = this.gap;
var node = this;
node.previous = {};
@ -36,6 +43,7 @@ module.exports = function(RED) {
else {
var n = parseFloat(msg.payload);
if (!isNaN(n)) {
if (node.pc) { node.gap = (node.previous[t] * node.g / 100) || 0; }
if (!node.previous.hasOwnProperty(t)) { node.previous[t] = n - node.gap; }
if (Math.abs(n - node.previous[t]) >= node.gap) {
node.previous[t] = n;